/* ================================================================
   RYAN QI PORTFOLIO — Hand-Drawn Sketchbook Theme
   ================================================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:         #0d0c09;
  --paper:      #161410;
  --ink:        #f0e8d5;
  --ink-muted:  #838090;
  --ink-faint:  rgba(240,232,213,0.18);
  --pencil:     #f5c430;
  --cobalt:     #60a5d4;
  --rouge:      #e05555;
  --sage:       #7ab87a;
  --lavender:   #c08fff;
  --orange:     #f0984e;
  --teal:       #6abf9e;
  --shadow:     rgba(8, 6, 18, 0.72);

  --font-sketch: 'Caveat', cursive;
  --font-body:   'Crimson Pro', Georgia, serif;

  /* Type scale — Minor Third (×1.333) from 1rem base */
  --text-xs:   0.75rem;   /* 12px — captions, metadata */
  --text-sm:   1rem;      /* 16px — body base */
  --text-md:   1.333rem;  /* 21px — large labels */
  --text-lg:   1.778rem;  /* 28px — subheadings */
  --text-xl:   2.37rem;   /* 38px — section headings */
  --text-2xl:  3.16rem;   /* 51px — display */
  --text-3xl:  4.21rem;   /* 67px — hero display */
  --leading-tight: 1.1;
  --leading-body:  1.38;
  --leading-loose: 1.6;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(240,232,213,0.15); border-radius: 2px; }

::selection { background: rgba(245,196,48,0.25); color: var(--pencil); }
html { scroll-behavior: smooth; }

body {
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sketch);
  overflow-x: hidden;
  cursor: none;
  /* Paper texture */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23n)' opacity='0.055'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 300px;
}

/* ================================================================
   CUSTOM CURSOR
   ================================================================ */

#cursor {
  position: fixed;
  width: 22px; height: 22px;
  border: 2px solid var(--ink-muted);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width .2s, height .2s, border-color .2s, background .2s;
  filter: url(#roughen);
}

body:has(a:hover, button:hover, .project-card:hover) #cursor {
  width: 34px; height: 34px;
  border-color: var(--pencil);
  background: rgba(245,196,48,0.07);
}

/* ================================================================
   GATE SCREEN
   ================================================================ */

#gate {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease, transform 0.8s ease;
  overflow: hidden;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.72' numOctaves='4' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23n)' opacity='0.07'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 300px;
}

#gate.unlocking {
  opacity: 0;
  transform: translateY(-20px);
  pointer-events: none;
}

/* Corner doodles */
.doodle {
  position: absolute;
  pointer-events: none;
  opacity: 0.7;
}
.doodle-tl { top: 0; left: 0; }
.doodle-tr { top: 0; right: 0; transform: scaleX(-1); }
.doodle-bl { bottom: 0; left: 0; transform: scaleY(-1); }
.doodle-br { bottom: 0; right: 0; transform: scale(-1); }

.gate-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  max-width: 520px;
  width: 100%;
}

.gate-title {
  text-align: center;
  margin-bottom: 0.5rem;
}

.gate-name {
  display: block;
  font-family: var(--font-sketch);
  font-size: clamp(3rem, 10vw, 5.5rem);
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.01em;
}

.gate-sub {
  font-size: clamp(1rem, 3vw, 1.4rem);
  color: var(--ink-muted);
  font-style: italic;
  margin-top: 0.5rem;
}

/* Game card — hand-drawn border via pseudo-element */
.gate-card {
  width: 100%;
  position: relative;
  padding: 2.5rem 2rem;
  background: var(--paper);
}

.gate-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2.5px solid var(--ink-muted);
  filter: url(#roughen);
  pointer-events: none;
}

.game-label {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  color: var(--ink-muted);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.game-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--ink-faint);
}

.game-title {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.game-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink-muted);
  margin-bottom: 2rem;
  line-height: var(--leading-body);
  font-style: italic;
}

/* ---- RPS Buttons ---- */
.rps-grid {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.rps-btn {
  position: relative;
  background: none;
  border: none;
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-family: var(--font-sketch);
  font-size: 1.2rem;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  transition: transform 0.15s ease;
}

.rps-btn:hover { transform: translateY(-3px) rotate(-2deg); }
.rps-btn:active { transform: translateY(0) rotate(1deg); }

.rps-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--ink-faint);
  filter: url(#roughen-heavy);
}

.rps-btn:hover::before { border-color: var(--pencil); }

.rps-emoji { font-size: 2.2rem; }

/* Score display */
.score-display {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.score-label { font-size: 0.75rem; color: var(--ink-muted); display: block; text-align: center; }
.score-you { color: var(--sage); }
.score-ai { color: var(--rouge); }
.score-vs { color: var(--ink-muted); font-size: 1rem; }

/* Round result */
.round-result {
  text-align: center;
  font-size: 1.1rem;
  min-height: 1.6rem;
  color: var(--ink-muted);
  transition: color 0.2s;
}
.round-result.win { color: var(--sage); }
.round-result.lose { color: var(--rouge); }
.round-result.tie { color: var(--pencil); }

/* ---- TicTacToe ---- */
.ttt-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  max-width: 260px;
  margin: 0 auto 1.5rem;
}

.ttt-cell {
  aspect-ratio: 1;
  background: rgba(240,232,213,0.15);
  border: none;
  cursor: pointer;
  font-family: var(--font-sketch);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ttt-cell::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--ink-faint);
  filter: url(#roughen);
  pointer-events: none;
}

.ttt-cell:hover:not(:disabled) { background: rgba(240,232,213,0.06); }
.ttt-cell[data-val="X"] { color: var(--cobalt); }
.ttt-cell[data-val="O"] { color: var(--rouge); }
.ttt-cell:disabled { cursor: not-allowed; }

.ttt-status {
  text-align: center;
  font-size: 1.1rem;
  color: var(--ink-muted);
  min-height: 1.6rem;
  margin-bottom: 1rem;
}

/* Reset button (shared) */
.game-reset {
  display: block;
  margin: 0 auto;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sketch);
  font-size: 1rem;
  color: var(--ink-muted);
  padding: 0.3rem 1rem;
  position: relative;
  transition: color 0.2s;
}
.game-reset:hover { color: var(--ink); }
.game-reset::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: var(--ink-faint);
  filter: url(#roughen);
}

/* ---- Math ---- */
.math-problem {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  text-align: center;
  color: var(--ink);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.math-progress {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.math-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--ink-faint);
  transition: background 0.3s;
}
.math-dot.correct { background: var(--sage); }
.math-dot.wrong { background: var(--rouge); }

.math-input-row {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

.math-input {
  background: rgba(240,232,213,0.15);
  border: none;
  outline: none; /* focus handled by .math-input-wrap:focus-within */
  font-family: var(--font-sketch);
  font-size: 1.6rem;
  color: var(--ink);
  width: 120px;
  text-align: center;
  padding: 0.4rem 0.5rem;
  caret-color: var(--pencil);
  position: relative;
}

.math-input::placeholder { color: var(--ink-faint); }
.math-input-wrap {
  position: relative;
}
.math-input-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--ink-faint);
  filter: url(#roughen);
  pointer-events: none;
}
.math-input:focus + .math-input-wrap::before,
.math-input-wrap:focus-within::before {
  border-color: var(--pencil);
}

.math-submit {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sketch);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--pencil);
  padding: 0.4rem 1.2rem;
  position: relative;
  transition: color 0.2s, transform 0.15s;
}
.math-submit:hover { transform: rotate(-1deg); }
.math-submit::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2.5px solid var(--pencil);
  filter: url(#roughen);
  pointer-events: none;
}

.math-feedback {
  text-align: center;
  font-size: 1rem;
  color: var(--ink-muted);
  min-height: 1.4rem;
  margin-top: 1rem;
  transition: color 0.2s;
}
.math-feedback.correct { color: var(--sage); }
.math-feedback.wrong { color: var(--rouge); }

/* Gate hint */
.gate-hint {
  font-size: 0.85rem;
  color: var(--ink-faint);
  font-style: italic;
  text-align: center;
}

/* Win animation overlay on gate */
#gate-win {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  z-index: 10;
  font-size: 3rem;
  text-align: center;
  gap: 1rem;
}
#gate-win.show { opacity: 1; pointer-events: all; }
.win-text {
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  color: var(--sage);
  font-weight: 700;
}
.win-sub {
  font-size: 1.1rem;
  color: var(--ink-muted);
  font-style: italic;
  font-family: var(--font-body);
}

/* ================================================================
   PORTFOLIO
   ================================================================ */

#portfolio {
  position: relative;
  opacity: 0;
  transition: opacity 0.9s ease 0.2s;
  pointer-events: none;
}

#portfolio.visible {
  opacity: 1;
  pointer-events: all;
}

/* Three.js canvas */
#bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* Grain overlay */
.grain-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 990;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 200px;
}

/* ================================================================
   FALLER
   ================================================================ */

#faller {
  position: relative;
  width: 42px;
  height: 56px;
  z-index: 50;
  pointer-events: none;
  transform-origin: center center;
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}
#faller svg {
  width: 100%;
  height: 100%;
}

/* Astronaut intercepting state — pause JS transform, snap to center */
#faller.astro-intercepting {
  position: fixed !important;
  top: 50% !important; left: 50% !important;
  transform: translate(-50%, -50%) scale(3.5) !important;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1) !important;
  z-index: 9999;
}

#faller.astro-intercepting::after {
  content: "Block your path, I will.";
  position: absolute;
  bottom: 110%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-family: var(--font-sketch);
  font-size: 0.85rem;
  color: var(--ink);
  background: rgba(13,12,9,0.9);
  border: 1.5px solid rgba(240,232,213,0.3);
  padding: 0.4rem 0.75rem;
  pointer-events: none;
}

/* Astronaut defeated state */
@keyframes astro-defeat {
  0%   { transform: translate(-50%, 0) rotate(-8deg) scale(1); opacity: 1; }
  30%  { transform: translate(calc(-50% + 18px), -20px) rotate(40deg) scale(1.15); opacity: 1; }
  60%  { transform: translate(calc(-50% - 10px), 12vh) rotate(200deg) scale(0.6); opacity: 0.5; }
  100% { transform: translate(-50%, 40vh) rotate(380deg) scale(0); opacity: 0; }
}

#faller.astro-defeated {
  animation: astro-defeat 0.7s ease-in forwards;
}

.faller-trail { display: none;
  position: absolute;
  top: 60%;
  left: 50%;
  transform: translate(-50%, 0);
  width: 2px;
  height: 80px;
  background: linear-gradient(180deg, rgba(245,196,48,0.35) 0%, transparent 100%);
  filter: url(#pencil-glow);
}

/* ================================================================
   MAIN LAYOUT
   ================================================================ */

main { position: relative; z-index: 5; }

/* ================================================================
   HERO
   ================================================================ */

.hero {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: clamp(2.5rem, 5vw, 5rem) clamp(2rem, 6vw, 6rem);
}

.hero-eyebrow {
  font-size: 1rem;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
  animation: sketchy-in 0.9s ease both 0.1s;
}

.hero-body {
  display: flex;
  align-items: flex-end;
  gap: 3rem;
  flex: 1;
  padding: 2rem 0 4rem;
}

.hero-name {
  font-family: var(--font-sketch);
  font-size: clamp(6rem, 19vw, 18rem);
  font-weight: 700;
  line-height: 0.88;
  flex-shrink: 0;
  animation: sketchy-in 1s ease both 0.2s;
}

.name-solid { display: block; color: var(--ink); }
.name-outline {
  display: block;
  color: transparent;
  -webkit-text-stroke: 2px var(--ink);
  transition: -webkit-text-stroke-color 0.3s;
}
.name-outline:hover { -webkit-text-stroke-color: var(--pencil); }

.hero-right {
  padding-bottom: 0.5rem;
  animation: sketchy-in 1s ease both 0.35s;
}

.hero-roles {
  font-size: 1.1rem;
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}
.dot { color: rgba(240,232,213,0.3); margin: 0 0.3rem; }

.hero-bio {
  font-family: var(--font-body);
  font-size: clamp(1.1rem, 2.2vw, 1.6rem);
  color: var(--ink-muted);
  line-height: var(--leading-body);
  max-width: 360px;
  margin-bottom: 2.5rem;
  font-variant-ligatures: common-ligatures;
}
.hero-bio em { color: var(--ink); font-style: italic; }

.hero-nav {
  display: flex;
  gap: 1.5rem;
}

.nav-link {
  font-size: 1rem;
  color: var(--ink-muted);
  text-decoration: none;
  position: relative;
  padding-bottom: 3px;
  transition: color 0.2s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1.5px;
  background: var(--ink-faint);
  filter: url(#roughen);
  transition: background 0.2s;
}

.nav-link:hover { color: var(--pencil); }
.nav-link:hover::after { background: var(--pencil); }

.scroll-indicator {
  display: flex;
  align-items: center;
  gap: 1rem;
  animation: sketchy-in 1s ease both 0.6s;
}

.scroll-label { font-size: 0.9rem; color: var(--ink-muted); font-style: italic; }

/* ================================================================
   WINS TICKER
   ================================================================ */

.wins-ticker-wrap {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 0.9rem clamp(2rem, 6vw, 6rem);
  border-top: 1px solid var(--ink-faint);
  border-bottom: 1px solid var(--ink-faint);
  overflow: hidden;
  position: relative;
}

.wins-ticker-label {
  font-family: var(--font-sketch);
  font-size: 0.75rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  white-space: nowrap;
  padding-right: 1rem;
  border-right: 1px solid var(--ink-faint);
  flex-shrink: 0;
}

.wins-ticker-track {
  flex: 1;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent 0%, black 4%, black 96%, transparent 100%);
}

.wins-ticker-inner {
  display: flex;
  align-items: center;
  gap: 0;
  white-space: nowrap;
  animation: ticker-scroll 32s linear infinite;
}

.wins-ticker-inner:hover { animation-play-state: paused; }

@keyframes ticker-scroll {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.win-chip {
  font-family: var(--font-sketch);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.8rem;
  white-space: nowrap;
}

.win-chip .win-icon { font-size: 1rem; }

.win-gold   { color: var(--pencil); }
.win-silver { color: var(--ink-muted); }
.win-award  { color: var(--orange); }
.win-finalist { color: var(--lavender); }

.win-link {
  color: inherit;
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 2px;
  opacity: 0.8;
  transition: opacity 0.15s;
}
.win-link:hover { opacity: 1; }

.win-sep {
  color: var(--ink-faint);
  padding: 0 0.6rem;
  font-size: 1.1rem;
}

/* ================================================================
   PROJECTS SECTION
   ================================================================ */

.projects-section {
  padding: clamp(5rem, 8vw, 8rem) clamp(2rem, 6vw, 6rem);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.section-eyebrow {
  font-size: 1rem;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
  font-style: italic;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-width: 960px;
}

/* ================================================================
   PROJECT CARD
   ================================================================ */

.project-card {
  --accent: var(--pencil);
  position: relative;
  background: var(--paper);
  padding: 0;
  opacity: 0;
  transform: translateX(-20px) rotate(-0.3deg);
  transition:
    opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  overflow: hidden;
}

.project-card.visible {
  opacity: 1;
  transform: translateX(0) rotate(0deg);
}

/* Hand-drawn border via pseudo-element */
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid rgba(240,232,213,0.12);
  filter: url(#roughen);
  pointer-events: none;
  z-index: 2;
  transition: border-color 0.3s;
}

.project-card:hover::before { border-color: rgba(240,232,213,0.28); }

/* Top color line */
.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2.5px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 3;
  filter: url(#roughen);
}

.project-card:hover::after { transform: scaleX(1); }

/* Card collapsed header (always visible) */
.card-collapsed {
  padding: clamp(1.5rem, 2.5vw, 2.2rem) clamp(1.5rem, 2.5vw, 2.5rem);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.card-left { flex: 1; }

.card-number {
  font-size: 0.8rem;
  color: var(--ink-muted);
  letter-spacing: 0.1em;
  margin-bottom: 0.3rem;
  display: block;
}

.project-name {
  font-family: var(--font-sketch);
  font-size: clamp(2rem, 4.5vw, 3.8rem);
  font-weight: 700;
  line-height: 0.95;
  color: var(--ink);
  margin-bottom: 0.6rem;
  transition: color 0.2s;
}

.project-card:hover .project-name { color: var(--accent); }

.card-meta {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.hackathon-tag {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

.award-tag {
  font-size: 0.8rem;
  padding: 0.15rem 0.6rem;
  color: var(--accent);
  position: relative;
}
.award-tag::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--accent);
  filter: url(#roughen);
}

/* Toggle indicator */
.card-toggle {
  font-size: 1.8rem;
  color: var(--ink-muted);
  line-height: 1;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s;
  flex-shrink: 0;
  user-select: none;
  font-weight: 400;
  width: 36px;
  text-align: center;
}

.project-card.open .card-toggle {
  transform: rotate(45deg);
  color: var(--accent);
}

/* ---- Expanded panel ---- */
.card-expanded {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-card.open .card-expanded {
  max-height: 700px;
}

.card-expanded-inner {
  padding: 0 clamp(1.5rem, 2.5vw, 2.5rem) clamp(1.5rem, 2.5vw, 2.2rem);
  border-top: 1px solid rgba(240,232,213,0.06);
  padding-top: 1.5rem;
}

/* Hand-drawn divider inside expanded */
.card-divider {
  display: block;
  margin-bottom: 1.5rem;
}

.card-tagline {
  font-family: var(--font-body);
  font-style: italic;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  color: var(--ink);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.card-description {
  font-family: var(--font-body);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: var(--leading-body);
  color: var(--ink-muted);
  max-width: 620px;
  margin-bottom: 1.75rem;
  font-variant-ligatures: common-ligatures;
}

.tech-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.75rem;
}

.tech-pill {
  font-size: 0.85rem;
  padding: 0.2rem 0.7rem;
  color: var(--ink-muted);
  position: relative;
  transition: color 0.2s;
}
.tech-pill::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1.5px solid rgba(240,232,213,0.12);
  filter: url(#roughen);
}
.project-card:hover .tech-pill { color: var(--ink); }
.project-card:hover .tech-pill::before { border-color: rgba(240,232,213,0.2); }

.card-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.card-link {
  font-size: 1rem;
  color: var(--ink-muted);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.2s;
}
.card-link::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1.5px;
  background: var(--ink-faint);
  filter: url(#roughen);
}
.card-link:hover { color: var(--accent); }
.card-link:hover::after { background: var(--accent); }
.card-link.disabled { opacity: 0.25; pointer-events: none; }

/* ================================================================
   ABOUT
   ================================================================ */

.about-section {
  padding: clamp(5rem, 8vw, 8rem) clamp(2rem, 6vw, 6rem);
  position: relative;
}

.about-section::before {
  content: '';
  position: absolute;
  top: 0; left: clamp(2rem, 6vw, 6rem); right: clamp(2rem, 6vw, 6rem);
  height: 1px;
  background: rgba(240,232,213,0.08);
  filter: url(#roughen);
}

.about-inner {
  display: flex;
  gap: clamp(3rem, 7vw, 8rem);
  align-items: flex-start;
}

.about-heading {
  font-family: var(--font-sketch);
  font-size: clamp(3rem, 7vw, 7rem);
  font-weight: 700;
  line-height: 0.95;
  flex-shrink: 0;
}

.about-heading em {
  font-family: var(--font-body);
  font-style: italic;
  font-weight: 300;
  color: var(--cobalt);
  -webkit-text-stroke: 0;
}

.about-right { padding-top: 0.5rem; }

.about-text {
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: var(--leading-loose);
  color: var(--ink-muted);
  max-width: 400px;
  margin-bottom: 3rem;
}

.about-stats {
  display: flex;
  gap: 3rem;
}

.stat { display: flex; flex-direction: column; gap: 0.3rem; }

.stat-num {
  font-family: var(--font-sketch);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--pencil);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--ink-muted);
}

/* ================================================================
   FOOTER
   ================================================================ */

.footer {
  padding: 2.5rem clamp(2rem, 6vw, 6rem);
  position: relative;
}
.footer::before {
  content: '';
  position: absolute;
  top: 0; left: clamp(2rem, 6vw, 6rem); right: clamp(2rem, 6vw, 6rem);
  height: 1px;
  background: rgba(240,232,213,0.08);
  filter: url(#roughen);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-name {
  font-family: var(--font-sketch);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--ink-muted);
}

.footer-links { display: flex; gap: 2rem; }
.footer-links a {
  font-size: 0.9rem;
  color: var(--ink-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--ink); }

.footer-copy {
  font-size: 0.8rem;
  color: rgba(240,232,213,0.2);
  font-style: italic;
}

/* ================================================================
   ORIGAMI SECTION
   ================================================================ */

/* ---- Legend (legacy, kept for possible reuse) ---- */
.orig-legend {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.4rem;
  padding: 0.9rem 1.4rem;
  border: 1px solid rgba(240,232,213,0.3);
  position: relative;
  width: fit-content;
}

.orig-legend::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
  pointer-events: none;
}

.legend-heading {
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--ink-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-right: 0.4rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sketch);
  font-size: 0.9rem;
  color: var(--ink-muted);
}

/* ---- Tabs ---- */
.orig-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--ink-faint);
}

.orig-tab {
  font-family: var(--font-sketch);
  font-size: 1.1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-muted);
  padding: 0.6rem 1.6rem 0.6rem 0;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -1px;
  letter-spacing: 0.01em;
}

.orig-tab:hover { color: var(--ink); }
.orig-tab.active { color: var(--orange); border-bottom-color: var(--orange); }

/* ---- Project type tabs ---- */
.proj-filter-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--ink-faint);
}

.proj-tab {
  font-family: var(--font-sketch);
  font-size: 1.05rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-muted);
  padding: 0.55rem 1.5rem 0.55rem 0;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  margin-bottom: -1px;
}

.proj-tab:hover { color: var(--ink); }
.proj-tab.active { color: var(--pencil); border-bottom-color: var(--pencil); }

/* ---- Mini-gate modal ---- */
.mini-gate {
  position: fixed;
  inset: 0;
  z-index: 8000;
  background: rgba(13,12,9,0.88);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
}

.mini-gate[style*="flex"] { display: flex; }

.mini-gate-card {
  position: relative;
  background: var(--paper);
  border: 1.5px solid rgba(240,232,213,0.3);
  padding: 2rem 2.4rem 2.4rem;
  width: min(420px, 92vw);
  filter: url(#roughen);
  animation: sketchy-in 0.3s ease forwards;
}

.mini-gate-close {
  position: absolute;
  top: 0.8rem; right: 1rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--ink-muted);
  cursor: pointer;
  font-family: var(--font-sketch);
  line-height: 1;
  transition: color 0.15s;
}
.mini-gate-close:hover { color: var(--ink); }

.mini-gate-eyebrow {
  font-family: var(--font-sketch);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 0.3rem;
}

.mini-gate-title {
  font-family: var(--font-sketch);
  font-size: 1.5rem;
  color: var(--ink);
  margin-bottom: 1.6rem;
  font-weight: 500;
}

.mini-game-desc {
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-muted);
  margin-bottom: 1.4rem;
}

.mini-rps-grid {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.mini-rps-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-sketch);
  font-size: 0.95rem;
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink-muted);
  padding: 0.8rem 0.5rem;
  cursor: pointer;
  filter: url(#roughen);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.mini-rps-btn span { font-size: 1.8rem; }
.mini-rps-btn:hover { color: var(--ink); border-color: var(--cobalt); background: rgba(96,165,212,0.06); }

.mini-math-problem {
  font-family: var(--font-sketch);
  font-size: 2rem;
  color: var(--ink);
  margin-bottom: 1rem;
  letter-spacing: 0.04em;
}

.mini-math-row {
  display: flex;
  gap: 0.6rem;
  margin-bottom: 0.8rem;
}

.mini-math-input {
  flex: 1;
  background: rgba(240,232,213,0.15);
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink);
  font-family: var(--font-sketch);
  font-size: 1.4rem;
  padding: 0.4rem 0.8rem;
  filter: url(#roughen);
  -moz-appearance: textfield;
}
.mini-math-input::-webkit-outer-spin-button,
.mini-math-input::-webkit-inner-spin-button { -webkit-appearance: none; }
.mini-math-input:focus { outline: none; border-color: var(--cobalt); }

.mini-math-submit {
  font-family: var(--font-sketch);
  font-size: 1.3rem;
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink-muted);
  padding: 0.4rem 1rem;
  cursor: pointer;
  filter: url(#roughen);
  transition: color 0.2s, border-color 0.2s;
}
.mini-math-submit:hover { color: var(--cobalt); border-color: var(--cobalt); }

.mini-result {
  font-family: var(--font-sketch);
  font-size: 1.05rem;
  min-height: 1.5rem;
  transition: color 0.2s;
}
.mini-result.win   { color: var(--sage); }
.mini-result.lose  { color: var(--rouge); }
.mini-result.tie   { color: var(--ink-muted); }

/* ---- Panels ---- */
.orig-panel { display: none; }
.orig-panel.active { display: block; }

/* ---- Simulator ---- */
.sim-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.sim-controls {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
}

.sim-control-group {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sim-label {
  font-family: var(--font-sketch);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
}

.sim-mode-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.sim-mode-btn {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-sketch);
  font-size: 1rem;
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink-muted);
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  filter: url(#roughen);
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  text-align: left;
}

.sim-mode-btn:hover { color: var(--ink); border-color: var(--ink-muted); }

.sim-mode-btn.active {
  color: var(--cobalt);
  border-color: var(--cobalt);
  background: rgba(96,165,212,0.06);
}

.sim-mode-btn[id="fold-mountain"].active {
  color: var(--rouge);
  border-color: var(--rouge);
  background: rgba(224,85,85,0.06);
}

.sim-action-row {
  display: flex;
  gap: 0.5rem;
}

.sim-action-btn {
  font-family: var(--font-sketch);
  font-size: 0.95rem;
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink-muted);
  padding: 0.35rem 0.7rem;
  cursor: pointer;
  filter: url(#roughen);
  transition: color 0.2s, border-color 0.2s;
  flex: 1;
}

.sim-action-btn:hover { color: var(--ink); border-color: var(--ink-muted); }

.sim-hint-box {
  display: flex;
  gap: 0.5rem;
  align-items: flex-start;
  padding: 0.7rem 0.9rem;
  background: rgba(240,232,213,0.15);
  border-left: 2px solid var(--orange);
}

.sim-hint-icon { flex-shrink: 0; margin-top: 1px; }

.sim-hint {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--ink-muted);
  line-height: 1.5;
}

.sim-folds-count {
  font-family: var(--font-sketch);
  font-size: 0.85rem;
  color: var(--ink-muted);
  opacity: 0.7;
}

.sim-folds-count span { color: var(--orange); }

/* Canvas */
.sim-canvas-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

#origami-canvas {
  display: block;
  width: 340px;
  height: 340px;
  cursor: crosshair;
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
  background: rgba(240,232,213,0.015);
}

.sim-canvas-label {
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--ink-muted);
  opacity: 0.55;
  letter-spacing: 0.05em;
}

/* ---- Crane Guide ---- */
.crane-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 700px;
}

.crane-step-visual {
  width: 240px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240,232,213,0.025);
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
}

.crane-right {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.crane-step-counter {
  font-family: var(--font-sketch);
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.crane-sep { margin: 0 0.25em; opacity: 0.5; }

.crane-step-desc {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--ink);
  line-height: 1.6;
}

.crane-controls {
  display: flex;
  gap: 0.7rem;
}

/* ---- Guide layout (crane / lotus / boat) ---- */
.guide-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3rem;
  align-items: center;
  max-width: 700px;
}

.guide-step-visual {
  width: 240px;
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240,232,213,0.025);
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
}

.guide-right {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.guide-step-counter {
  font-family: var(--font-sketch);
  font-size: 0.9rem;
  color: var(--ink-muted);
}

.guide-sep { margin: 0 0.25em; opacity: 0.5; }

.guide-step-desc {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-style: italic;
  color: var(--ink);
  line-height: 1.6;
}

.guide-controls {
  display: flex;
  gap: 0.7rem;
}

.crane-btn {
  font-family: var(--font-sketch);
  font-size: 1rem;
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink-muted);
  padding: 0.4rem 1.1rem;
  cursor: pointer;
  filter: url(#roughen);
  transition: color 0.2s, border-color 0.2s;
}

.crane-btn:hover:not(:disabled) { color: var(--orange); border-color: var(--orange); }
.crane-btn.primary { color: var(--ink); }
.crane-btn.primary:hover:not(:disabled) { color: var(--orange); border-color: var(--orange); }
.crane-btn:disabled { opacity: 0.28; cursor: not-allowed; }

@media (max-width: 860px) {
  .sim-layout { grid-template-columns: 1fr; }
  .sim-controls { flex-direction: row; flex-wrap: wrap; }
  .sim-control-group { flex: 1; min-width: 140px; }
  .sim-canvas-wrap { align-items: flex-start; }
  #origami-canvas { width: 100%; max-width: 340px; height: auto; aspect-ratio: 1; }
  .crane-layout { grid-template-columns: 1fr; }
  .crane-step-visual { width: 200px; height: 200px; }
  .guide-layout { grid-template-columns: 1fr; }
  .guide-step-visual { width: 200px; height: 200px; }
}

/* ================================================================
   ANIMATIONS
   ================================================================ */

@keyframes sketchy-in {
  from { opacity: 0; transform: translateY(16px) rotate(-0.5deg); }
  to   { opacity: 1; transform: translateY(0) rotate(0deg); }
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 900px) {
  .hero-body { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
  .about-inner { flex-direction: column; gap: 2.5rem; }
  .footer-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 580px) {
  #faller { display: none; }
  #cursor { display: none; }
  body { cursor: auto; }
  .hero-name { font-size: clamp(4.5rem, 22vw, 7rem); }
  .about-stats { gap: 2rem; }
  .rps-grid { flex-wrap: wrap; }
  .ttt-grid { max-width: 220px; }
}

/* ================================================================
   TOP NAV
   ================================================================ */

.top-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 500;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.7rem 5vw;
  background: rgba(13,12,9,0.94); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--ink-faint);
}

.top-nav-brand {
  font-family: var(--font-sketch);
  font-size: 1.1rem;
  color: var(--ink);
  opacity: 0.65;
}

.top-nav-tabs {
  display: flex;
  gap: 0.2rem;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}
.top-nav-tabs::-webkit-scrollbar { display: none; }

.top-tab {
  font-family: var(--font-sketch);
  font-size: 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-muted);
  padding: 0.4rem 1.2rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}

.top-tab:hover { color: var(--ink); }

.top-tab.active {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.top-section {
  display: none;
  min-height: 100dvh;
}

.top-section.active { display: block; }

#sec-portfolio { padding-top: 80px; }
#sec-games, #sec-origami, #sec-graph, #sec-timeline { padding-top: 80px; }
#sec-models { padding-top: 0; overflow: hidden; }

/* ================================================================
   ORIGAMI — 3-COLUMN LAYOUT
   ================================================================ */

.origami-section {
  padding: 3rem 5vw 6rem;
  position: relative;
}

.orig-main-layout {
  display: grid;
  grid-template-columns: 210px 300px 1fr;
  gap: 2rem;
  align-items: start;
  margin-top: 2rem;
}

/* ---- Left: fold types sidebar ---- */
.orig-folds-sidebar {
  position: sticky;
  top: 70px;
  max-height: calc(100vh - 90px);
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(240,232,213,0.18) transparent;
  padding-right: 0.4rem;
}

.orig-sidebar-title {
  font-family: var(--font-sketch);
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px solid var(--ink-faint);
}

.sbl-row {
  display: flex;
  flex-direction: column;
  gap: 0.28rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ink-faint);
}

.sbl-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-sketch);
  font-size: 0.78rem;
  color: var(--ink-muted);
}

.fold-dict-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ink-faint);
}

.fds-entry {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
}

.fds-entry svg {
  flex-shrink: 0;
  margin-top: 1px;
  opacity: 0.92;
}

.fds-name {
  font-family: var(--font-sketch);
  font-size: 0.82rem;
  color: var(--ink);
  margin-bottom: 0.08rem;
  line-height: 1.2;
}

.fds-desc {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: var(--ink-muted);
  font-style: italic;
  line-height: 1.35;
}

.fd-bases-block {
  margin-bottom: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--ink-faint);
}

.fd-bases-title {
  font-family: var(--font-sketch);
  font-size: 0.75rem;
  color: var(--ink-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.fd-bases-block .fd-base {
  display: flex;
  gap: 0.4rem;
  align-items: baseline;
  margin-bottom: 0.18rem;
}

/* ---- Center: guide panel ---- */
.orig-guide-panel {
  position: sticky;
  top: 70px;
  background: rgba(22,20,16,0.5);
  border: 1px solid rgba(240,232,213,0.25);
  padding: 1.1rem;
  filter: url(#roughen);
}

.orig-guide-tabs {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1.1rem;
  flex-wrap: wrap;
  row-gap: 0.25rem;
}

.orig-guide-tab {
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  background: none;
  border: 1px solid rgba(240,232,213,0.25);
  color: var(--ink-muted);
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  transition: all 0.18s;
  filter: url(#roughen);
}

.orig-guide-tab:hover { color: var(--ink); border-color: var(--ink-muted); }
.orig-guide-tab.active { color: var(--orange); border-color: var(--orange); }

.guide-content { display: none; }
.guide-content.active { display: block; }

.guide-step-visual {
  width: 100%;
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(240,232,213,0.025);
  margin-bottom: 1rem;
}

.orig-sim-panel {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sim-top-bar {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.orig-sim-title {
  font-family: var(--font-sketch);
  font-size: 1.1rem;
  color: var(--ink);
  flex: 1;
}

.orig-sim-actions { display: flex; gap: 0.3rem; }

.sim-body {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

#origami-canvas {
  display: block;
  flex-shrink: 0;
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1;
  height: auto;
  cursor: crosshair;
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
  background: rgba(240,232,213,0.015);
}

.sim-fold-sidebar {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  flex-shrink: 0;
  width: 110px;
}

.sim-fold-sidebar .sim-mode-btn {
  width: 100%;
  font-size: 0.82rem;
  padding: 0.35rem 0.6rem;
  justify-content: flex-start;
}

.sim-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.sim-mode-btn[id="fold-crease"].active {
  color: var(--ink-muted);
  border-color: var(--ink-muted);
  background: rgba(240,232,213,0.06);
}
.sim-mode-btn[id="fold-inside-rev"].active  { color: var(--cobalt);  border-color: var(--cobalt);  background: rgba(96,165,212,0.12); }
.sim-mode-btn[id="fold-outside-rev"].active { color: var(--rouge);   border-color: var(--rouge);   background: rgba(224,85,85,0.10); }
.sim-mode-btn[id="fold-petal"].active       { color: var(--sage);    border-color: var(--sage);    background: rgba(122,184,122,0.10); }
.sim-mode-btn[id="fold-squash"].active      { color: var(--lavender);border-color: var(--lavender);background: rgba(192,143,255,0.10); }
.sim-mode-btn[id="fold-rabbit"].active      { color: var(--pencil);  border-color: var(--pencil);  background: rgba(245,196,48,0.10); }
.sim-mode-btn[id="fold-sink"].active        { color: var(--teal);    border-color: var(--teal);    background: rgba(76,205,196,0.10); }

/* ---- Extra simulator controls (injected by initSimulator) ---- */
.sim-extra-controls {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 480px;
  padding: 0.6rem 0;
  border-top: 1px solid var(--ink-faint);
  margin-top: 0.2rem;
}

.sim-ctrl-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.sim-ctrl-lbl {
  font-family: var(--font-sketch);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  opacity: 0.65;
  min-width: 44px;
}

.sim-ctrl-sep {
  color: var(--ink-faint);
  padding: 0 0.1rem;
}

.sim-rot-val,
.sim-angle-val {
  font-family: var(--font-sketch);
  font-size: 0.88rem;
  color: var(--orange);
  min-width: 38px;
}

.sim-angle-slider {
  -webkit-appearance: none;
  appearance: none;
  height: 3px;
  background: var(--ink-faint);
  outline: none;
  cursor: pointer;
  flex: 1;
  min-width: 80px;
  max-width: 160px;
  accent-color: var(--cobalt);
}

.sim-angle-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--cobalt);
  cursor: pointer;
  border: 1.5px solid var(--bg);
}

.sim-angle-slider::-moz-range-thumb {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--cobalt);
  cursor: pointer;
  border: 1.5px solid var(--bg);
}

.sim-preset {
  font-size: 0.82rem;
  padding: 0.25rem 0.55rem;
  flex: 0 0 auto;
}

.sim-ref-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sketch);
  font-size: 0.85rem;
  color: var(--ink-muted);
  cursor: pointer;
  user-select: none;
}

.sim-ref-toggle input[type="checkbox"] {
  accent-color: var(--pencil);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

.sim-ref-legend {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  margin-left: auto;
  opacity: 0.7;
}

.sim-ref-legend span {
  margin-right: 0.08rem;
}

/* ---- Fold types guide panel (#guide-types) ---- */
.fold-dict {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.fd-entry {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.fd-entry svg {
  flex-shrink: 0;
  margin-top: 2px;
  opacity: 0.92;
}

.fd-entry-wide {
  display: block;
}

.fd-name {
  font-family: var(--font-sketch);
  font-size: 0.95rem;
  color: var(--ink);
  margin-bottom: 0.15rem;
}

.fd-desc {
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--ink-muted);
  font-style: italic;
  line-height: 1.45;
}

.fd-bases {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  border-top: 1px solid var(--ink-faint);
  padding-top: 0.6rem;
  margin-top: 0.2rem;
}

.fd-base {
  display: flex;
  gap: 0.5rem;
  align-items: baseline;
}

.fd-base-name {
  font-family: var(--font-sketch);
  font-size: 0.88rem;
  color: var(--pencil);
  white-space: nowrap;
  flex-shrink: 0;
}

.fd-base-desc {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-style: italic;
}

.fd-kawasaki {
  margin-top: 0.8rem;
  padding: 0.55rem 0.8rem;
  border-left: 2px solid var(--lavender);
  background: rgba(192,143,255,0.04);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--ink-muted);
  line-height: 1.5;
}

.fd-kaw-label {
  display: block;
  font-family: var(--font-sketch);
  font-size: 0.88rem;
  color: var(--lavender);
  font-style: normal;
  margin-bottom: 0.3rem;
}

@media (max-width: 1100px) {
  .orig-main-layout { grid-template-columns: 190px 280px 1fr; gap: 1.4rem; }
}

@media (max-width: 860px) {
  .orig-main-layout { grid-template-columns: 1fr; }
  .orig-guide-panel { position: static; }
  .orig-folds-sidebar { position: static; max-height: none; overflow: visible; }
  .sim-ref-legend { margin-left: 0; }
  .fold-dict-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .sim-body { flex-direction: column; }
  .sim-fold-sidebar { width: 100%; flex-direction: row; flex-wrap: wrap; }
  .sim-fold-sidebar .sim-mode-btn { width: auto; flex: none; }
}

/* ================================================================
   GAMES HUB
   ================================================================ */

.games-hub { padding-bottom: 6rem; }
.games-hub-inner { padding: 0 5vw; }

.games-hub-desc {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-muted);
  margin: 0.5rem 0 2rem;
}

.games-selector {
  display: flex;
  gap: 0.75rem;
  flex-wrap: nowrap;
  overflow-x: auto;
  padding-bottom: 0.75rem;
  margin-bottom: 1.75rem;
  scrollbar-width: thin;
  scrollbar-color: rgba(240,232,213,0.15) transparent;
  -webkit-overflow-scrolling: touch;
}

.game-card {
  background: none;
  border: 1.5px solid rgba(240,232,213,0.3);
  padding: 0.8rem 1rem;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
  filter: url(#roughen);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 110px;
  flex-shrink: 0;
}

.game-card:hover { border-color: var(--ink-muted); }
.game-card.active { border-color: var(--lavender); background: rgba(192,143,255,0.07); }

.game-card-icon { font-size: 1.6rem; }
.game-card-name { font-family: var(--font-sketch); font-size: 1rem; color: var(--ink); }
.game-card-desc { font-family: var(--font-body); font-size: 0.8rem; color: var(--ink-muted); font-style: italic; }

.games-arena { min-height: 500px; }

/* ---- Wordle ---- */
.wordle-wrap { display: flex; flex-direction: column; align-items: center; gap: 1rem; padding: 1rem 0; }

.wordle-msg {
  font-family: var(--font-sketch);
  font-size: 1.1rem;
  color: var(--pencil);
  min-height: 1.5rem;
  text-align: center;
}

.wordle-board { display: flex; flex-direction: column; gap: 6px; }
.wordle-row { display: flex; gap: 6px; }

.wordle-tile {
  background: rgba(240,232,213,0.05);
  width: 52px; height: 52px;
  border: 1.5px solid rgba(240,232,213,0.3);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sketch); font-size: 1.8rem; color: var(--ink);
  transition: background 0.3s, border-color 0.3s;
}

.wordle-tile.correct { background: rgba(122,184,122,0.3); border-color: var(--sage); color: var(--sage); }
.wordle-tile.present { background: rgba(245,196,48,0.22); border-color: var(--pencil); color: var(--pencil); }
.wordle-tile.absent  { background: rgba(240,232,213,0.15); border-color: rgba(240,232,213,0.08); color: var(--ink-muted); }
.wordle-tile.active  { border-color: var(--ink-muted); }

.wordle-keyboard { display: flex; flex-direction: column; gap: 5px; align-items: center; }
.wordle-kb-row { display: flex; gap: 4px; }

.wordle-key {
  font-family: var(--font-sketch); font-size: 0.9rem;
  background: rgba(240,232,213,0.08);
  border: 1px solid rgba(240,232,213,0.3);
  color: var(--ink);
  padding: 0.5rem 0.55rem;
  min-width: 30px;
  cursor: pointer;
  transition: background 0.2s;
}

.wordle-key.wide { min-width: 50px; font-size: 0.8rem; }
.wordle-key.correct { background: rgba(122,184,122,0.3); border-color: var(--sage); }
.wordle-key.present { background: rgba(245,196,48,0.22); border-color: var(--pencil); }
.wordle-key.absent  { background: rgba(240,232,213,0.15); color: var(--ink-muted); }

/* ---- Connections ---- */
.conn-wrap { max-width: 540px; padding: 1rem 0; }
.conn-header { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.2rem; flex-wrap: wrap; }

.conn-lives { display: flex; gap: 0.4rem; }
.conn-life { display: inline-block; width: 14px; height: 14px; border-radius: 50%; background: var(--ink-muted); filter: url(#roughen); }
.conn-life.lost { background: rgba(240,232,213,0.1); }

.conn-msg { font-family: var(--font-sketch); font-size: 0.95rem; color: var(--ink-muted); }

.conn-board { display: flex; flex-direction: column; gap: 0.6rem; margin-bottom: 1rem; }

.conn-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; }

.conn-word {
  font-family: var(--font-sketch); font-size: 0.9rem;
  background: rgba(240,232,213,0.06);
  border: 1px solid rgba(240,232,213,0.3);
  color: var(--ink);
  padding: 0.7rem 0.4rem;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  filter: url(#roughen);
}

.conn-word:hover { border-color: var(--ink-muted); background: rgba(240,232,213,0.1); }
.conn-word.selected { border-color: var(--lavender); background: rgba(192,143,255,0.12); color: var(--lavender); }

.conn-solved-group {
  padding: 0.75rem 1rem;
  border: 1.5px solid;
  border-radius: 0;
  filter: url(#roughen);
}

.conn-group-name { font-family: var(--font-sketch); font-size: 0.9rem; font-weight: 600; }
.conn-solved-words { font-family: var(--font-body); font-size: 0.85rem; color: var(--ink-muted); margin-top: 0.25rem; font-style: italic; }

.conn-submit { margin-top: 0.5rem; width: 100%; }

/* ---- Pinpoint ---- */
.pinpoint-wrap { max-width: 480px; padding: 1rem 0; }
.pinpoint-header { margin-bottom: 1.5rem; }
.pinpoint-eyebrow { font-family: var(--font-sketch); font-size: 1.3rem; color: var(--ink); }

.pinpoint-clues { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.2rem; min-height: 60px; }
.pinpoint-clue {
  font-family: var(--font-sketch);
  font-size: 2rem;
  color: var(--orange);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--ink-faint);
  animation: sketchy-in 0.3s ease;
}
.pinpoint-clue.new { color: var(--pencil); }

.pinpoint-input-row { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.pinpoint-input {
  flex: 1;
  font-family: var(--font-sketch); font-size: 1rem;
  background: rgba(240,232,213,0.15);
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink);
  padding: 0.5rem 0.8rem;
  outline: none;
  filter: url(#roughen);
}
.pinpoint-input:focus { border-color: var(--ink-muted); }
.pinpoint-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.5rem; }
.pinpoint-msg.win { color: var(--sage); }
.pinpoint-msg.lose { color: var(--rouge); }

/* ---- Queens ---- */
.queens-wrap { max-width: 500px; padding: 1rem 0; }
.queens-header { margin-bottom: 1.2rem; }
.queens-eyebrow { font-family: var(--font-sketch); font-size: 1.2rem; color: var(--ink); }
.queens-rules { font-family: var(--font-body); font-style: italic; color: var(--ink-muted); font-size: 0.9rem; margin-top: 0.3rem; }

.queens-grid {
  display: grid;
  gap: 3px;
  width: fit-content;
  margin-bottom: 1rem;
}

.queens-cell {
  width: 56px; height: 56px;
  border: 1.5px solid;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  cursor: pointer;
  transition: filter 0.1s;
  user-select: none;
}

.queens-cell:hover { filter: brightness(1.4); }

.queens-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.5rem; margin-bottom: 0.75rem; }
.queens-msg.win { color: var(--sage); }
.queens-msg.lose { color: var(--rouge); }

.queens-legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; margin-top: 1rem; }
.queens-legend-item { font-family: var(--font-sketch); font-size: 0.85rem; color: var(--ink-muted); display: flex; align-items: center; gap: 0.4rem; }

/* ---- Math Lab ---- */
.mathlab-wrap { max-width: 480px; padding: 1rem 0; }

.mathlab-levels {
  display: flex;
  gap: 0.35rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.mathlab-level-pip {
  width: 28px; height: 28px;
  border: 1.5px solid rgba(240,232,213,0.3);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-sketch); font-size: 0.8rem;
  color: var(--ink-muted);
}

.mathlab-level-pip.done { border-color: var(--sage); color: var(--sage); background: rgba(122,184,122,0.08); }
.mathlab-level-pip.active { border-color: var(--orange); color: var(--orange); background: rgba(240,152,78,0.08); }

.mathlab-level-name { font-family: var(--font-sketch); font-size: 0.85rem; color: var(--ink-muted); margin-bottom: 0.5rem; }
.mathlab-question { font-family: var(--font-sketch); font-size: 2.2rem; color: var(--ink); margin-bottom: 1.2rem; }

.mathlab-input-row { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.mathlab-input {
  width: 140px;
  font-family: var(--font-sketch); font-size: 1.2rem;
  background: rgba(240,232,213,0.15);
  border: 1.5px solid rgba(240,232,213,0.3);
  color: var(--ink);
  padding: 0.5rem 0.8rem;
  outline: none;
}
.mathlab-input:focus { border-color: var(--ink-muted); }

.mathlab-feedback { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.5rem; margin-bottom: 0.5rem; }
.mathlab-feedback.win { color: var(--sage); }
.mathlab-feedback.lose { color: var(--rouge); }
.mathlab-score { font-family: var(--font-sketch); font-size: 0.85rem; color: var(--ink-muted); }
.mathlab-score span { color: var(--orange); }

/* ---- RPS Hub ---- */
.rps-hub-wrap { max-width: 400px; padding: 1rem 0; }
.rps-hub-score { display: flex; align-items: center; justify-content: center; gap: 2rem; margin-bottom: 1rem; }
.rps-hub-side { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; }
.rps-hub-num { font-family: var(--font-sketch); font-size: 3rem; font-weight: 700; color: var(--ink); }
.rps-you-num { color: var(--sage); }
.rps-ai-num { color: var(--rouge); }
.rps-hub-label { font-family: var(--font-sketch); font-size: 0.8rem; color: var(--ink-muted); }
.rps-hub-vs { font-family: var(--font-sketch); font-size: 1.1rem; color: var(--ink-muted); }
.rps-hub-result { text-align: center; font-family: var(--font-sketch); font-size: 1.2rem; color: var(--ink-muted); min-height: 1.8rem; margin-bottom: 1.5rem; }
.rps-hub-result.win { color: var(--sage); }
.rps-hub-result.lose { color: var(--rouge); }
.rps-hub-result.tie { color: var(--pencil); }
.rps-hub-btns { display: flex; gap: 1rem; justify-content: center; margin-bottom: 0.5rem; }
.rps-hub-choice { background: none; border: none; cursor: pointer; font-family: var(--font-sketch); font-size: 1rem; color: var(--ink); display: flex; flex-direction: column; align-items: center; gap: 0.3rem; padding: 1rem 1.4rem; position: relative; transition: transform 0.15s; }
.rps-hub-choice::before { content:''; position:absolute; inset:0; border:1.5px solid var(--ink-faint); filter:url(#roughen); pointer-events:none; }
.rps-hub-choice:hover { transform: translateY(-4px) rotate(-2deg); }
.rps-hub-choice:hover::before { border-color: var(--pencil); }
.rps-hub-choice span { font-size: 0.85rem; }

/* ---- TicTacToe Hub ---- */
.ttt-hub-wrap { max-width: 340px; padding: 1rem 0; }
.ttt-hub-status { text-align: center; font-family: var(--font-sketch); font-size: 1.2rem; color: var(--ink-muted); min-height: 1.8rem; margin-bottom: 1rem; }
.ttt-hub-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 5px; max-width: 240px; margin: 0 auto 1rem; }
.ttt-hub-cell { aspect-ratio: 1; background: rgba(240,232,213,0.15); border: none; cursor: pointer; font-family: var(--font-sketch); font-size: 2.2rem; font-weight: 700; color: var(--ink); position: relative; display: flex; align-items: center; justify-content: center; transition: background 0.15s; }
.ttt-hub-cell::before { content:''; position:absolute; inset:0; border:1.5px solid var(--ink-faint); filter:url(#roughen); pointer-events:none; }
.ttt-hub-cell:hover:not(:disabled) { background: rgba(240,232,213,0.06); }
.ttt-hub-cell[data-val="X"] { color: var(--cobalt); }
.ttt-hub-cell[data-val="O"] { color: var(--rouge); }
.ttt-hub-cell:disabled { cursor: not-allowed; }

/* ---- Connect 4 ---- */
.c4-wrap { max-width: 480px; padding: 1rem 0; }
.c4-status { text-align: center; font-family: var(--font-sketch); font-size: 1.2rem; color: var(--ink-muted); min-height: 1.8rem; margin-bottom: 0.5rem; }
.c4-col-btns { display: grid; grid-template-columns: repeat(7,1fr); gap: 4px; max-width: 350px; margin-bottom: 4px; }
.c4-col-btn { background: none; border: none; cursor: pointer; font-family: var(--font-sketch); font-size: 1.1rem; color: var(--ink-muted); padding: 0.3rem 0; transition: color 0.15s; }
.c4-col-btn:hover:not(:disabled) { color: var(--pencil); }
.c4-col-btn:disabled { opacity: 0.2; cursor: not-allowed; }
.c4-board { max-width: 350px; padding: 6px; background: rgba(240,232,213,0.15); border: 1.5px solid rgba(240,232,213,0.3); }
.c4-cell { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; background: rgba(0,0,0,0.3); border-radius: 50%; }

/* ---- Sudoku ---- */
.su-wrap { max-width: 500px; padding: 1rem 0; }
.su-eyebrow { font-family: var(--font-sketch); font-size: 1rem; color: var(--ink-muted); margin-bottom: 1rem; }
.su-board { max-width: 360px; padding: 4px; background: rgba(240,232,213,0.15); border: 1.5px solid rgba(240,232,213,0.3); margin-bottom: 1rem; }
.su-cell { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-family: var(--font-sketch); font-size: 1.2rem; border: 1px solid rgba(240,232,213,0.1); cursor: pointer; transition: background 0.1s; }
.su-cell:hover { background: rgba(240,232,213,0.05); }
.su-cell.selected { background: rgba(245,196,48,0.12); border-color: var(--pencil); }
.su-cell.locked { color: var(--ink); font-weight: 700; cursor: default; }
.su-cell:not(.locked) { color: var(--cobalt); }
.su-cell.wrong { color: var(--rouge); }
.su-numpad { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 0.75rem; max-width: 360px; }
.su-num { background: none; border: 1px solid rgba(240,232,213,0.3); font-family: var(--font-sketch); font-size: 1.1rem; color: var(--ink); padding: 0.4rem 0.7rem; cursor: pointer; transition: all 0.15s; }
.su-num:hover { border-color: var(--cobalt); color: var(--cobalt); }
.su-clr { color: var(--rouge); border-color: rgba(224,85,85,0.3); }
.su-actions { display: flex; gap: 0.75rem; margin-bottom: 0.5rem; }
.su-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.4rem; }
.su-msg.win { color: var(--sage); }
.su-msg.lose { color: var(--rouge); }

/* ---- Spelling Bee ---- */
.sb-wrap { max-width: 420px; padding: 1rem 0; }
.sb-eyebrow { font-family: var(--font-sketch); font-size: 1rem; color: var(--ink-muted); margin-bottom: 1rem; }
.sb-word-display { font-family: var(--font-sketch); font-size: 2.2rem; color: var(--pencil); text-align: center; min-height: 2.8rem; margin-bottom: 1.2rem; letter-spacing: 0.15em; }
.sb-hive { display: flex; flex-direction: column; align-items: center; gap: 4px; margin-bottom: 1.2rem; }
.sb-hive-row { display: flex; gap: 4px; justify-content: center; }
.sb-hex { width: 60px; height: 60px; background: rgba(240,232,213,0.15); border: 1.5px solid rgba(240,232,213,0.3); cursor: pointer; font-family: var(--font-sketch); font-size: 1.5rem; font-weight: 700; color: var(--ink); transition: all 0.15s; display: flex; align-items: center; justify-content: center; }
.sb-hex:hover { border-color: var(--pencil); background: rgba(245,196,48,0.08); }
.sb-center { border-color: var(--pencil); background: rgba(245,196,48,0.12); color: var(--pencil); }
.sb-controls { display: flex; gap: 0.75rem; margin-bottom: 0.75rem; }
.sb-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.4rem; margin-bottom: 0.5rem; }
.sb-msg.win { color: var(--sage); }
.sb-msg.lose { color: var(--rouge); }
.sb-found-header { font-family: var(--font-sketch); font-size: 0.85rem; color: var(--ink-muted); margin-bottom: 0.5rem; }
.sb-found-list { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.sb-chip { font-family: var(--font-sketch); font-size: 0.9rem; padding: 0.2rem 0.6rem; border: 1px solid rgba(240,232,213,0.3); color: var(--ink); }
.sb-chip.pangram { border-color: var(--pencil); color: var(--pencil); background: rgba(245,196,48,0.08); }

/* ---- Crossword ---- */
.cw-wrap { max-width: 600px; padding: 1rem 0; }
.cw-dir-btns { display: flex; gap: 0.5rem; margin-bottom: 1rem; }
.cw-body { display: flex; gap: 2rem; align-items: flex-start; flex-wrap: wrap; margin-bottom: 1rem; }
.cw-board { width: 250px; flex-shrink: 0; }
.cw-cell {
  background: rgba(240,232,213,0.05);
  aspect-ratio: 1; background: rgba(240,232,213,0.15); border: 1px solid rgba(240,232,213,0.3); display: flex; align-items: center; justify-content: center; font-family: var(--font-sketch); font-size: 1.1rem; color: var(--ink); cursor: pointer; position: relative; }
.cw-cell-num { position: absolute; top: 1px; left: 2px; font-size: 0.48rem; line-height: 1; color: var(--ink-muted); font-family: var(--font-sketch); }
.cw-cell.selected { background: rgba(245,196,48,0.12); border-color: var(--pencil); }
.cw-cell.cw-black { background: rgba(240,232,213,0.15); cursor: default; }
.cw-cell.wrong { color: var(--rouge); }
.cw-clues { display: flex; flex-direction: column; gap: 1rem; min-width: 160px; }
.cw-clue-head { font-family: var(--font-sketch); font-size: 1rem; color: var(--pencil); margin-bottom: 0.4rem; border-bottom: 1px solid var(--ink-faint); padding-bottom: 0.3rem; }
.cw-clue { font-family: var(--font-body); font-size: 0.85rem; color: var(--ink-muted); margin-bottom: 0.3rem; font-style: italic; }
.cw-actions { display: flex; gap: 0.75rem; margin-bottom: 0.5rem; }
.cw-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.4rem; }
.cw-msg.win { color: var(--sage); }
.cw-msg.lose { color: var(--rouge); }

/* ---- Tango ---- */
.tg-wrap { max-width: 420px; padding: 1rem 0; }
.tg-eyebrow { font-family: var(--font-sketch); font-size: 1rem; color: var(--ink-muted); margin-bottom: 1rem; line-height: 1.4; }
.tg-board { max-width: 330px; background: rgba(240,232,213,0.15); padding: 4px; border: 1.5px solid rgba(240,232,213,0.3); margin-bottom: 0.75rem; }
.tg-cell { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; font-size: 1.4rem; border: 1px solid rgba(240,232,213,0.25); cursor: pointer; transition: background 0.1s; }
.tg-cell:hover { background: rgba(240,232,213,0.05); }
.tg-cell.locked { background: rgba(240,232,213,0.06); border-color: rgba(240,232,213,0.2); cursor: default; }
.tg-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.4rem; }
.tg-msg.win { color: var(--sage); }
.tg-msg.lose { color: var(--rouge); }

/* ---- Numberlink ---- */
.nl-wrap { max-width: 420px; padding: 1rem 0; }
.nl-eyebrow { font-family: var(--font-sketch); font-size: 1rem; color: var(--ink-muted); margin-bottom: 1rem; }
.nl-board { max-width: 330px; padding: 4px; background: rgba(240,232,213,0.15); border: 1.5px solid rgba(240,232,213,0.3); margin-bottom: 0.75rem; cursor: crosshair; }
.nl-cell { aspect-ratio: 1; display: flex; align-items: center; justify-content: center; border: 1px solid rgba(240,232,213,0.25); transition: background 0.1s; font-family: var(--font-sketch); font-size: 1.1rem; }
.nl-endpoint { border: 2px solid; font-weight: 700; }
.nl-msg { font-family: var(--font-sketch); font-size: 1rem; min-height: 1.4rem; }
.nl-msg.win { color: var(--sage); }
.nl-msg.lose { color: var(--rouge); }

/* crane-btn.active variant for crossword direction toggle */
.crane-btn.active { border-color: var(--lavender); color: var(--lavender); background: rgba(192,143,255,0.08); }

/* ================================================================
   PROJECT GRAPH SECTION
   ================================================================ */

.graph-section { padding: 0 5vw 6rem; }

.graph-desc {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-muted);
  margin: 0.5rem 0 1.5rem;
}

.graph-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 2rem;
  align-items: start;
}

.graph-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.graph-canvas {
  touch-action: none;
  width: 100%;
  height: 520px;
  display: block;
  border: 1px solid rgba(240,232,213,0.3);
  filter: url(#roughen);
  cursor: grab;
}

.graph-canvas:active { cursor: grabbing; }

.graph-info {
  background: rgba(22,20,16,0.7);
  border: 1px solid rgba(240,232,213,0.3);
  padding: 1.2rem;
  min-height: 200px;
  filter: url(#roughen);
}

.gi-hint {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-muted);
  font-size: 0.9rem;
}

.gi-header {
  border-left: 3px solid var(--teal);
  padding-left: 0.7rem;
  margin-bottom: 0.7rem;
}

.gi-name {
  display: block;
  font-family: var(--font-sketch);
  font-size: 1.3rem;
  color: var(--ink);
  margin-bottom: 0.2rem;
}

.gi-award {
  display: inline-block;
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--pencil);
  border: 1px solid rgba(245,196,48,0.3);
  padding: 0.1rem 0.4rem;
  margin-right: 0.4rem;
}

.gi-hack {
  display: inline-block;
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--ink-muted);
}

.gi-tagline {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--ink-muted);
  font-size: 0.9rem;
  margin-bottom: 0.7rem;
  line-height: 1.4;
}

.gi-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin-bottom: 0.8rem;
}

.gi-pill {
  font-family: var(--font-sketch);
  font-size: 0.78rem;
  color: var(--ink-muted);
  border: 1px solid;
  padding: 0.1rem 0.4rem;
}

.gi-conns {
  margin-bottom: 0.8rem;
}

.gi-conns-label {
  font-family: var(--font-sketch);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
  opacity: 0.6;
  margin-bottom: 0.4rem;
}

.gi-conn-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.gi-conn-name {
  font-family: var(--font-sketch);
  font-size: 0.88rem;
  color: var(--ink);
}

.gi-conn-shared {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: var(--ink-muted);
  font-style: italic;
}

.gi-links {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.gi-link {
  font-family: var(--font-sketch);
  font-size: 0.88rem;
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(78,205,196,0.3);
  transition: border-color 0.2s;
}

.gi-link:hover { border-color: var(--teal); }

.graph-chat {
  background: rgba(22,20,16,0.7);
  border: 1px solid rgba(240,232,213,0.3);
  display: flex;
  flex-direction: column;
  max-height: 300px;
  filter: url(#roughen);
}

.gc-header {
  font-family: var(--font-sketch);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  padding: 0.55rem 1rem;
  border-bottom: 1px solid var(--ink-faint);
  opacity: 0.6;
  flex-shrink: 0;
}

.gc-messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.7rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  min-height: 100px;
  scrollbar-width: thin;
}

.gc-msg {
  font-family: var(--font-body);
  font-size: 0.8rem;
  line-height: 1.45;
  padding: 0.35rem 0.6rem;
  max-width: 96%;
  white-space: pre-wrap;
  word-break: break-word;
}

.gc-user {
  color: var(--ink);
  background: rgba(255,255,255,0.04);
  align-self: flex-end;
  border: 1px solid rgba(240,232,213,0.3);
}

.gc-bot {
  color: var(--teal);
  align-self: flex-start;
}

.gc-input-row {
  display: flex;
  border-top: 1px solid var(--ink-faint);
  flex-shrink: 0;
}

.gc-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 0.8rem;
  color: var(--ink);
  padding: 0.55rem 0.9rem;
}

.gc-input::placeholder { color: var(--ink-muted); opacity: 0.45; }

.gc-send {
  background: transparent;
  border: none;
  border-left: 1px solid var(--ink-faint);
  color: var(--teal);
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  font-size: 1rem;
  font-family: var(--font-sketch);
  transition: background 0.15s;
}

.gc-send:hover { background: rgba(78,205,196,0.08); }

@media (max-width: 860px) {
  .graph-layout { grid-template-columns: 1fr; }
  .graph-canvas { height: 380px; }
}

/* ================================================================
   GAMES — WORK IN PROGRESS
   ================================================================ */

.games-wip {
  position: relative;
  min-height: calc(100vh - 52px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6rem 5vw 5rem;
  overflow: hidden;
}

/* caution-tape strips */
.wip-tape {
  position: absolute;
  left: 0; right: 0;
  height: 26px;
  background: repeating-linear-gradient(
    -50deg,
    var(--pencil)              0px,
    var(--pencil)              12px,
    rgba(13,12,9,0.85)         12px,
    rgba(13,12,9,0.85)         24px
  );
  opacity: 0.45;
  pointer-events: none;
}
.wip-tape-top    { top: 0; }
.wip-tape-bottom { bottom: 0; }

/* floating background dots */
.wip-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.wip-dot {
  position: absolute;
  left: var(--x);
  top:  var(--y);
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--ink-faint);
  animation: wip-float var(--dur, 4s) ease-in-out infinite var(--del, 0s);
}
.wip-dot--lg {
  width: 7px; height: 7px;
  background: transparent;
  border: 1.5px solid var(--ink-faint);
}
@keyframes wip-float {
  0%, 100% { transform: translateY(0) scale(1);   opacity: 0.25; }
  50%       { transform: translateY(-18px) scale(1.3); opacity: 0.7;  }
}

/* central flex container */
.wip-inner {
  display: flex;
  align-items: center;
  gap: 5vw;
  max-width: 900px;
  width: 100%;
  flex-wrap: wrap;
  justify-content: center;
}

/* astronaut illustration */
.wip-illo-wrap {
  flex-shrink: 0;
}
.wip-illo {
  display: block;
  animation: wip-bob 3.4s ease-in-out infinite;
  filter: url(#roughen);
}
@keyframes wip-bob {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50%       { transform: translateY(-14px) rotate(1deg); }
}

/* text block */
.wip-copy {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 420px;
}

.wip-eyebrow {
  font-family: var(--font-sketch);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  color: var(--ink-muted);
  text-transform: uppercase;
}

.wip-heading {
  font-family: var(--font-sketch);
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  line-height: 1.05;
  color: var(--ink);
  filter: url(#roughen-heavy);
}
.wip-heading em {
  font-style: italic;
  color: var(--lavender);
}

.wip-sub {
  font-family: var(--font-body);
  font-size: 1rem;
  font-style: italic;
  color: var(--ink-muted);
  line-height: 1.6;
}

/* fake progress bar */
.wip-progress-outer {
  margin-top: 0.5rem;
}
.wip-progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--ink-muted);
  margin-bottom: 0.4rem;
}
.wip-pct { color: var(--lavender); }

.wip-progress-track {
  width: 100%;
  max-width: 260px;
  height: 3px;
  background: rgba(240,232,213,0.1);
  border-radius: 2px;
  overflow: hidden;
}
.wip-progress-fill {
  height: 100%;
  width: 0;
  background: var(--pencil);
  border-radius: 2px;
  transition: width 0.4s ease;
}

@media (max-width: 680px) {
  .wip-inner { flex-direction: column; gap: 2rem; }
  .wip-illo  { width: 140px; height: 147px; }
}

/* ================================================================
   3D MODELS VIEWER
   ================================================================ */

.models-viewer {
  position: relative;
  width: 100vw;
  height: 100vh;
  background: #050505;
}

#models-canvas {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  display: block;
  cursor: grab;
}
#models-canvas:active { cursor: grabbing; }

/* overlay — pointer-events none by default, re-enabled on interactive children */
.models-ui {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}

/* title block — top-left, below the fixed nav */
.models-title-block {
  position: absolute;
  top: 5.2rem;
  left: 5vw;
}
.models-eyebrow {
  display: block;
  font-family: 'Courier New', monospace;
  font-size: 0.6rem;
  letter-spacing: 0.28em;
  color: rgba(255,255,255,0.2);
  margin-bottom: 0.6rem;
}
.models-name {
  font-family: 'Courier New', monospace;
  font-size: clamp(2rem, 5vw, 3.8rem);
  font-weight: 300;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.82);
  line-height: 1;
  transition: opacity 0.5s ease;
}

/* pulsing loading dot — top-right */
.models-loading-dot {
  position: absolute;
  top: 5.5rem;
  right: 5vw;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.5);
  opacity: 0;
  transition: opacity 0.3s ease;
  animation: models-pulse 1s ease-in-out infinite;
}
.models-loading-dot.visible { opacity: 1; }
@keyframes models-pulse {
  0%, 100% { transform: scale(1);   opacity: 0.4; }
  50%       { transform: scale(1.6); opacity: 1;   }
}

/* model selector — bottom-center */
.models-selector {
  position: absolute;
  bottom: 3.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 3rem;
  pointer-events: auto;
}

.models-divider {
  width: 1px;
  height: 28px;
  background: rgba(255,255,255,0.12);
  flex-shrink: 0;
}

.model-tab {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 1rem;
  opacity: 0.3;
  transition: opacity 0.35s ease;
  position: relative;
  pointer-events: auto;   /* explicit override of parent pointer-events:none */
}
.model-tab:hover  { opacity: 0.65; }
.model-tab.active { opacity: 1; }

.mtab-num {
  font-family: 'Courier New', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.25em;
  color: rgba(255,255,255,0.4);
  display: block;
}
.mtab-name {
  font-family: 'Courier New', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  color: rgba(255,255,255,0.9);
  text-transform: uppercase;
  display: block;
}
/* active indicator dot */
.model-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 3px; height: 3px;
  border-radius: 50%;
  background: rgba(255,255,255,0.75);
}

/* interaction hint — bottom-right */
.models-hint {
  position: absolute;
  bottom: 3.8rem;
  right: 5vw;
  font-family: 'Courier New', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.2em;
  color: rgba(255,255,255,0.18);
  pointer-events: none;
}

@media (max-width: 580px) {
  .models-selector { gap: 1.6rem; bottom: 2.5rem; }
  .mtab-name       { font-size: 0.6rem; }
  .models-name     { font-size: 1.8rem; }
}

/* ----------------------------------------------------------------
   HUD overlay — hold-to-inspect elements (Task 2 / 3)
   opacity + scale managed entirely by GSAP; no CSS transform here
   ---------------------------------------------------------------- */

/* 1. Coord readout — top-right, below loading dot (which sits at top: 5.5rem) */
#hud-coords {
  position: absolute;
  top: 7.2rem;
  right: 5vw;
  font-family: 'Courier New', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.45);
  text-align: right;
  pointer-events: none;
}

/* 2. Technical spec line — bottom-left, above selector tabs */
#hud-spec {
  position: absolute;
  bottom: 8rem;
  left: 5vw;
  pointer-events: none;
}
.hud-rule {
  width: 4rem;
  height: 1px;
  background: rgba(255, 255, 255, 0.18);
  margin-bottom: 0.45rem;
}
.hud-spec-text {
  display: block;
  font-family: 'Courier New', monospace;
  font-size: 0.55rem;
  letter-spacing: 0.22em;
  color: rgba(255, 255, 255, 0.35);
}

/* 3. Centre reticle — absolute-centred + symbol */
#hud-reticle {
  position: absolute;
  /* centre with calc so GSAP scale doesn't conflict with a translate() */
  top: calc(50% - 0.6em);
  left: calc(50% - 0.35em);
  font-family: 'Courier New', monospace;
  font-size: 1rem;
  line-height: 1;
  color: rgba(255, 255, 255, 0.28);
  pointer-events: none;
}

/* 4. Corner brackets */
#hud-bracket-tl {
  position: absolute;
  top: 5.2rem;
  left: 5vw;
  pointer-events: none;
}
#hud-bracket-br {
  position: absolute;
  bottom: 3.2rem;
  right: 5vw;
  pointer-events: none;
}

/* Force custom cursor across all game elements */
.mini-gate *, .c4-wrap *, .ttt-wrap *, .math-wrap *, #gate * {
  cursor: none !important;
}
#cursor {
  z-index: 999999 !important;
}

/* GLOBAL CUSTOM CURSOR FORCED ON TOP */
#cursor {
  z-index: 999999 !important;
  pointer-events: none !important;
}
/* Ensure system cursor is hidden even over buttons on the gate screen */
.mini-gate *, #gate *, .c4-wrap *, .ttt-wrap *, .rps-grid *, .math-wrap * {
  cursor: none !important;
}
@media (max-width: 580px) {
  #cursor { display: block !important; opacity: 1 !important; }
}

/* ================================================================
   TIMELINE — Vertical Zigzag (hand-drawn sketchbook)
   ================================================================ */

.timeline-section {
  padding: 3rem 5vw 6rem;
  max-width: 900px;
  margin: 0 auto;
}

.timeline-subtitle {
  font-family: 'Crimson Pro', serif;
  font-size: 1.05rem;
  color: var(--ink-muted);
  margin: 0.4rem 0 3rem;
  font-style: italic;
}

.tl-zigzag-wrap { position: relative; }

#timeline-canvas {
  position: absolute;
  top: 0; left: 0;
  pointer-events: none;
  z-index: 0;
}

/* ── Container with vertical spine ────────────────────────────── */
.timeline-events {
  position: relative;
  z-index: 1;
}

/* Pencil-thin centre line — behind all items */
.timeline-events::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 1px;
  transform: translateX(-50%);
  z-index: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(240,232,213,0.10) 6%,
    rgba(240,232,213,0.10) 94%,
    transparent 100%
  );
  pointer-events: none;
}

/* ── Each row: 3-col grid (card | dot-zone | card) ────────────── */
.tl-item {
  position: relative;
  z-index: 2;        /* above spine line AND above milestone cards */
  display: grid;
  grid-template-columns: calc(50% - 20px) 40px calc(50% - 20px);
  align-items: start;
  margin-bottom: 2.4rem;
}

/* ── Spine dot ───────────────────────────────────────────────── */
.tl-spine-dot {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  align-self: start;
  margin-top: 1rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--tl-color, var(--pencil));
  border: 2px solid var(--bg);
  position: relative;
  z-index: 2;
  flex-shrink: 0;

  will-change: opacity, transform;

  /* Pre-reveal */
  opacity: 0;
  transform: scale(0);
  transition:
    transform  0.42s cubic-bezier(0.22, 1, 0.36, 1) 0.14s,
    opacity    0.32s cubic-bezier(0.22, 1, 0.36, 1) 0.14s,
    box-shadow 0.26s ease;
}

.tl-item.tl-visible .tl-spine-dot {
  opacity: 1;
  transform: scale(1);
  box-shadow:
    0 0 0 2px var(--tl-color, var(--pencil)),
    0 0 12px var(--tl-color, var(--pencil));
}

.tl-item.tl-visible:hover .tl-spine-dot {
  transform: scale(1.4);
}

/* Pulse ring on hover */
.tl-spine-dot::after {
  content: '';
  position: absolute;
  inset: -5px;
  border-radius: 50%;
  border: 1.5px solid var(--tl-color, var(--pencil));
  opacity: 0;
  transform: scale(0.8);
}
.tl-item.tl-visible:hover .tl-spine-dot::after {
  animation: tlPulseRing 1.6s ease-out infinite;
}
@keyframes tlPulseRing {
  0%   { opacity: 0.6; transform: scale(0.85); }
  100% { opacity: 0;   transform: scale(2.8);  }
}

/* ── Cards ───────────────────────────────────────────────────── */
.tl-card {
  background: rgba(13, 12, 9, 0.96); /* opaque enough to hide spine behind text */
  border-radius: 3px 4px 5px 3px;
  padding: 0.65rem 0.8rem 0.7rem;
  cursor: pointer;
  user-select: none;

  transition:
    background  0.18s ease,
    box-shadow  0.22s ease,
    transform   0.22s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Left card: col 1, flush right, right-side accent */
.tl-item--left .tl-card {
  grid-column: 1;
  grid-row:    1;
  text-align:  right;
  margin-right: 0.85rem;
  border-right: 2.5px solid var(--tl-color, var(--pencil));
  border-top:    1px solid rgba(240,232,213,0.07);
  border-left:   1px solid rgba(240,232,213,0.07);
  border-bottom: 1px solid rgba(240,232,213,0.08);

  /* Pre-reveal: slide in from left, rise up, slightly small */
  opacity: 0;
  transform: translateX(-40px) translateY(10px) scale(0.95);
  transition:
    opacity   0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.2s ease, box-shadow 0.22s ease;
  will-change: opacity, transform;
}

.tl-item--left .tl-links { justify-content: flex-end; }

/* Right card: col 3, flush left, left-side accent */
.tl-item--right .tl-card {
  grid-column: 3;
  grid-row:    1;
  margin-left: 0.85rem;
  border-left:   2.5px solid var(--tl-color, var(--pencil));
  border-top:    1px solid rgba(240,232,213,0.07);
  border-right:  1px solid rgba(240,232,213,0.07);
  border-bottom: 1px solid rgba(240,232,213,0.08);

  /* Pre-reveal: slide in from right, rise up, slightly small */
  opacity: 0;
  transform: translateX(40px) translateY(10px) scale(0.95);
  transition:
    opacity   0.6s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.65s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.2s ease, box-shadow 0.22s ease;
  will-change: opacity, transform;
}

/* Revealed: full opacity, settled position */
.tl-item.tl-visible .tl-card {
  opacity: 1;
  transform: none;
}

/* Scrolled past: dim and nudge upward */
.tl-item.tl-past .tl-card {
  opacity: 0.32;
  transform: translateY(-6px) scale(0.97);
  transition:
    opacity   0.5s ease,
    transform 0.5s ease,
    background 0.2s ease, box-shadow 0.22s ease;
}

.tl-item.tl-past .tl-spine-dot {
  opacity: 0.28;
  transform: scale(0.75);
  box-shadow: none;
  transition:
    opacity   0.5s ease,
    transform 0.5s ease,
    box-shadow 0.3s ease;
}

/* Hover lift — only while fully visible */
.tl-item.tl-visible:not(.tl-past) .tl-card:hover {
  background: rgba(28, 26, 22, 0.98);
  box-shadow: 0 4px 20px rgba(0,0,0,0.42),
              0 0 0 1px var(--tl-color, var(--pencil));
  transform: translateY(-2px);
}

/* ── Milestone: centred chapter marker ───────────────────────── */
.tl-item--milestone {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  margin-top:     3.5rem;  /* clear space above so it never covers the prior card */
  margin-bottom:  3.5rem;
  z-index: 1;              /* below regular items so overlap always favours the card */
}

.tl-item--milestone .tl-spine-dot {
  grid-column: unset;
  width: 18px; height: 18px;
  margin-top:    0;
  margin-bottom: 0.75rem;
}

.tl-item--milestone .tl-card {
  width:      52%;
  text-align: center;
  background: rgba(13, 12, 9, 0.96);
  border-top:    3px solid var(--tl-color, var(--pencil));
  border-left:   1px solid var(--tl-color, var(--pencil));
  border-right:  1px solid var(--tl-color, var(--pencil));
  border-bottom: 1px solid rgba(240,232,213,0.1);
  border-radius: 3px 4px 5px 3px;
  margin: 0;
  cursor: default;

  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}

.tl-item--milestone.tl-visible .tl-card {
  opacity: 1; transform: none;
}

.tl-item--milestone .tl-card:hover {
  transform: none;
  box-shadow: none;
}

/* ── Card content ─────────────────────────────────────────────── */
.tl-date-label {
  font-family: var(--font-sketch);
  font-size: 0.7rem;
  color: var(--ink-faint);
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 0.2rem;
  opacity: 0.6;
}

.tl-label {
  font-family: var(--font-sketch);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.12rem;
  line-height: 1.2;
}

.tl-award {
  font-family: var(--font-sketch);
  font-size: 0.72rem;
  color: var(--tl-color, var(--pencil));
  opacity: 0.88;
  display: block;
  margin-top: 0.1rem;
}

/* ── Expand ───────────────────────────────────────────────────── */
.tl-expand-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.42s cubic-bezier(0.4, 0, 0.2, 1);
}

.tl-card.tl-expanded .tl-expand-body { max-height: 280px; }

.tl-expand-inner {
  padding-top: 0.52rem;
  margin-top:  0.44rem;
  border-top: 1px solid rgba(240,232,213,0.1);
}

.tl-desc {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--ink-muted);
  line-height: 1.52;
  margin: 0 0 0.4rem;
}

.tl-links {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tl-link {
  font-family: var(--font-sketch);
  font-size: 0.8rem;
  color: var(--tl-color, var(--cobalt));
  text-decoration: none;
  opacity: 0.72;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: opacity 0.14s;
}
.tl-link:hover { opacity: 1; }

.tl-expand-hint {
  font-family: var(--font-sketch);
  font-size: 0.67rem;
  color: var(--tl-color, var(--cobalt));
  opacity: 0.3;
  display: block;
  margin-top: 0.2rem;
  transition: opacity 0.18s;
}
.tl-card:hover .tl-expand-hint    { opacity: 0.6; }
.tl-card.tl-expanded .tl-expand-hint { display: none; }

/* ── Mobile: full-width cards ────────────────────────────────── */
@media (max-width: 560px) {
  .tl-item {
    grid-template-columns: 28px 1fr;
    margin-bottom: 1.6rem;
  }
  .tl-spine-dot {
    grid-column: 1;
    margin-top: 0.9rem;
    width: 11px; height: 11px;
  }
  .tl-item--left .tl-card,
  .tl-item--right .tl-card {
    grid-column: 2;
    grid-row:    1;
    text-align: left !important;
    margin-left:  0.6rem !important;
    margin-right: 0 !important;
    border-left:   2.5px solid var(--tl-color, var(--pencil)) !important;
    border-right:  1px solid rgba(240,232,213,0.07) !important;
    border-top:    1px solid rgba(240,232,213,0.07) !important;
    border-bottom: 1px solid rgba(240,232,213,0.08) !important;
    transform: translateX(-20px) !important;
  }
  .tl-item.tl-visible .tl-card { transform: none !important; }
  .tl-item--left .tl-links { justify-content: flex-start !important; }
  .tl-item--milestone { align-items: flex-start; }
  .tl-item--milestone .tl-card { width: 100%; }
  .timeline-events::before { left: 14px; }
}

.tl-coming-soon {
  font-family: var(--font-sketch);
  font-size: 1rem;
  color: var(--ink-muted);
  text-align: center;
  margin-top: 3rem;
  opacity: 0.45;
  letter-spacing: 0.04em;
  font-style: italic;
}

/* Difficulty badge for hard origami guides */
.guide-difficulty {
  font-family: 'Caveat', cursive;
  font-size: 0.85rem;
  color: var(--rouge);
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
  opacity: 0.85;
}

/* ================================================================
   RESUME TAB
   ================================================================ */

.top-tab-resume {
  color: var(--pencil) !important;
  border-bottom-color: transparent;
  opacity: 0.8;
  transition: opacity 0.2s, border-color 0.2s;
}

.top-tab-resume:hover {
  opacity: 1;
  border-bottom-color: var(--pencil) !important;
}

/* ================================================================
   RESUME PDF MODAL
   ================================================================ */

#resume-modal {
  position: fixed;
  inset: 0;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

#resume-modal.open {
  opacity: 1;
  pointer-events: all;
}

.resume-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(8, 6, 18, 0.88);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.resume-modal-inner {
  position: relative;
  z-index: 1;
  width: min(92vw, 880px);
  height: min(90vh, 1100px);
  background: var(--paper);
  display: flex;
  flex-direction: column;
  border: none;
  transform: translateY(12px) scale(0.98);
  transition: transform 0.25s ease;
}

/* Hand-drawn border via pseudo-element */
.resume-modal-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  border: 2px solid var(--ink-muted);
  filter: url(#roughen);
  pointer-events: none;
  z-index: 2;
}

#resume-modal.open .resume-modal-inner {
  transform: translateY(0) scale(1);
}

.resume-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.2rem;
  border-bottom: 1px solid var(--ink-faint);
  flex-shrink: 0;
}

.resume-modal-title {
  font-family: var(--font-sketch);
  font-size: 1.05rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.resume-modal-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.resume-modal-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sketch);
  font-size: 0.9rem;
  padding: 0.35rem 0.9rem;
  border-radius: 0;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  text-decoration: none;
  position: relative;
}

.resume-download-btn {
  background: none;
  border: 1.5px solid var(--ink-muted);
  color: var(--ink-muted);
  filter: url(#roughen);
}

.resume-download-btn:hover {
  color: var(--pencil);
  border-color: var(--pencil);
}

.resume-close-btn {
  background: none;
  border: 1.5px solid var(--ink-faint);
  color: var(--ink-muted);
  filter: url(#roughen);
}

.resume-close-btn:hover {
  color: var(--rouge);
  border-color: var(--rouge);
}

.resume-modal-body {
  flex: 1;
  overflow: hidden;
  position: relative;
}

#resume-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: #fff;
}

/* ================================================================
   FOCUS-VISIBLE — intentional keyboard focus rings
   ================================================================ */

:focus-visible {
  outline: 2px solid var(--pencil);
  outline-offset: 3px;
  border-radius: 1px;
}

.top-tab:focus-visible {
  outline: 2px solid var(--pencil);
  outline-offset: 2px;
}

.resume-modal-btn:focus-visible {
  outline: 2px solid var(--pencil);
  outline-offset: 2px;
}

/* Nav tab touch targets — minimum 44px on coarse pointer (touch) */
@media (pointer: coarse) {
  .top-tab {
    min-height: 44px;
    padding-top: 0.7rem;
    padding-bottom: 0.7rem;
  }
  .resume-modal-btn {
    min-height: 44px;
  }
}

/* ================================================================
   PREFERS-REDUCED-MOTION — critical accessibility
   ================================================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  /* Keep essential state-communicating transitions */
  .top-section { transition: none !important; }
  #gate { transition: none !important; }
  #resume-modal { transition: none !important; }
  #resume-modal .resume-modal-inner { transition: none !important; }
}

/* ================================================================
   SKIP-TO-CONTENT — keyboard navigation
   ================================================================ */

.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 100000;
  background: var(--pencil);
  color: var(--bg);
  font-family: var(--font-sketch);
  font-size: 1rem;
  padding: 0.5rem 1.2rem;
  text-decoration: none;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 0.5rem;
  outline: 2px solid var(--bg);
  outline-offset: 2px;
}

/* ================================================================
   ANIMATION FIXES
   ================================================================ */

/* game-card: transition: all animates layout properties (bad for perf) */
.game-card {
  transition: border-color 0.2s, background 0.2s;
}

/* ================================================================
   TOUCH TARGETS — coarse pointer (touch devices) min 44px
   ================================================================ */

@media (pointer: coarse) {
  /* Project filter tabs */
  .proj-tab {
    min-height: 44px;
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }

  /* Origami guide tabs */
  .orig-guide-tab {
    min-height: 44px;
    padding-top: 0.55rem;
    padding-bottom: 0.55rem;
  }

  /* Origami prev/next buttons */
  .crane-btn {
    min-height: 44px;
    padding-top: 0.6rem;
    padding-bottom: 0.6rem;
  }

  /* Origami simulator fold mode buttons */
  .sim-mode-btn {
    min-height: 44px;
  }

  /* Simulator action buttons (undo, reset) */
  .sim-action-btn {
    min-height: 44px;
  }

  /* Graph chat send button */
  .gc-send {
    min-height: 44px;
    padding: 0.55rem 1.2rem;
  }

  /* Game cards in hub selector */
  .game-card {
    min-height: 60px;
  }

  /* Model viewer tabs */
  .model-tab {
    padding: 0.9rem 1.2rem;
  }
}