/* =============================================================
   Context Grammar Simulator — Story version
   =============================================================
   "Hana's Tuesday" — five vertical scenes that demonstrate the
   framework by showing the AI changing its UI in five different
   moments. Designer-first: no configuration required.
   ============================================================= */

:root {
  --story-max: 1080px;
  --story-narrow: 720px;
  --story-bg-warm: #f7f4ee;       /* feature scene background */
  --story-ink: #08070b;
  --story-paper: #fafafa;

  /* Domain accent — used sparingly */
  --story-accent: #6889b4;        /* Context Grammar blue */
  --story-warm:   #b88a4a;        /* Intent / decision moments */
  --story-care:   #8a6ab0;        /* Brain / care moments */
}

.story-page {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding-top: 56px; /* nav clearance */
  font-family: var(--font-sans);
}

/* ─── HERO ─────────────────────────────────────────────────── */
.story-hero {
  padding: clamp(72px, 10vw, 140px) clamp(24px, 4vw, 48px) clamp(56px, 7vw, 96px);
  background: var(--story-ink);
  color: #f0ece4;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.story-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 50% at 30% 30%, rgba(104, 137, 180, 0.12), transparent 60%),
    radial-gradient(ellipse 50% 50% at 70% 70%, rgba(184, 138, 74, 0.06), transparent 60%);
  pointer-events: none;
}
.story-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
  margin: 0 auto;
}
.story-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: rgba(240, 236, 228, 0.55);
  margin: 0 0 24px;
}
.story-hero__title {
  font-weight: 500;
  font-size: clamp(32px, 4.6vw, 60px);
  line-height: 1.1;
  letter-spacing: -2px;
  margin: 0 0 24px;
}
.story-hero__title em {
  font-style: italic;
  font-weight: 400;
  color: rgba(240, 236, 228, 0.78);
}
.story-hero__sub {
  font-size: clamp(15px, 1.15vw, 18px);
  line-height: 1.75;
  color: rgba(240, 236, 228, 0.72);
  margin: 0 0 32px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}
.story-hero__skip {
  display: inline-block;
  padding: 12px 24px;
  background: #f0ece4;
  color: var(--story-ink);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: -0.1px;
  transition: transform 0.2s var(--ease-hover), background 0.2s var(--ease-hover);
}
.story-hero__skip:hover {
  background: #fff;
  transform: translateY(2px);
}

/* ─── MAIN ─────────────────────────────────────────────────── */
.story-main { background: var(--bg); }

/* ─── SCENE base ───────────────────────────────────────────── */
.scene {
  padding: clamp(64px, 9vw, 120px) clamp(24px, 4vw, 48px);
  border-bottom: 1px solid var(--border);
  position: relative;
}
.scene__inner {
  max-width: var(--story-max);
  margin: 0 auto;
}
.scene--dark {
  background: var(--story-ink);
  color: #f0ece4;
  border-bottom: 1px solid rgba(240, 236, 228, 0.08);
}
.scene--feature {
  background: var(--story-bg-warm);
  color: var(--story-ink);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* Scene head — time + place */
.scene__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 24px;
  margin-bottom: clamp(24px, 3vw, 36px);
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.scene--dark .scene__head { border-bottom-color: rgba(240, 236, 228, 0.1); }
.scene--feature .scene__head { border-bottom-color: rgba(0, 0, 0, 0.1); }
.scene__time {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3vw, 44px);
  font-weight: 500;
  letter-spacing: -0.5px;
  margin: 0;
  color: var(--text);
}
.scene--dark .scene__time { color: #f0ece4; }
.scene--feature .scene__time { color: var(--story-ink); }
.scene__place {
  font-size: clamp(14px, 1vw, 16px);
  color: var(--text-2);
  margin: 0;
  font-weight: 400;
}
.scene--dark .scene__place { color: rgba(240, 236, 228, 0.65); }
.scene--feature .scene__place { color: rgba(8, 7, 11, 0.7); }
.scene__chip {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 10px;
  background: var(--story-warm);
  color: #fff;
}

/* Scene body — story + AI output */
.scene__body { display: block; }
.scene__story {
  max-width: var(--story-narrow);
}
.scene__story--narrow { max-width: 760px; }
.scene__lede {
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.55;
  color: var(--text);
  margin: 0 0 clamp(28px, 3vw, 40px);
  font-weight: 400;
  letter-spacing: -0.3px;
}
.scene--dark .scene__lede { color: #f0ece4; }
.scene--feature .scene__lede { color: var(--story-ink); }
.scene__lede strong {
  font-weight: 600;
  color: var(--text);
}
.scene--dark .scene__lede strong { color: #fff; }
.scene--feature .scene__lede strong { color: var(--story-ink); }

/* ─── AI OUTPUT (the "what the AI does" panel) ─────────────── */
.ai-output {
  margin: clamp(24px, 3vw, 36px) 0;
  padding: clamp(20px, 2.5vw, 32px);
  background: var(--bg-2);
  border: 1px solid var(--border);
}
.scene--dark .ai-output {
  background: rgba(240, 236, 228, 0.04);
  border-color: rgba(240, 236, 228, 0.12);
}
.scene--feature .ai-output {
  background: rgba(255, 255, 255, 0.7);
  border-color: rgba(0, 0, 0, 0.1);
}
.ai-output--wide { padding: clamp(20px, 2.5vw, 32px); }

.ai-output__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 14px;
}
.scene--dark .ai-output__label { color: rgba(240, 236, 228, 0.5); }
.scene--feature .ai-output__label { color: rgba(8, 7, 11, 0.5); }

/* ─── AI CARDS ─────────────────────────────────────────────── */
.ai-card {
  background: var(--story-paper);
  color: var(--story-ink);
  padding: clamp(18px, 2vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px -10px rgba(0, 0, 0, 0.08);
}

.ai-card__title {
  font-size: clamp(20px, 1.8vw, 26px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.4px;
  margin: 0;
}
.ai-card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(8, 7, 11, 0.55);
  margin: 0;
  letter-spacing: 0.3px;
}
.ai-card__btn {
  margin-top: 6px;
  padding: 12px 20px;
  background: var(--story-ink);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 500;
  border: none;
  cursor: pointer;
  align-self: flex-start;
  transition: background 0.15s var(--ease-hover);
}
.ai-card__btn:hover { background: #1a1a1a; }
.ai-card__btn--primary {
  background: var(--story-warm);
}
.ai-card__btn--primary:hover { background: #a07840; }

/* Voice variant */
.ai-card--voice {
  background: #1a1a1a;
  color: #f0ece4;
  align-items: center;
  text-align: center;
  padding: clamp(28px, 3vw, 44px);
  gap: 18px;
}
.ai-card__voice-wave {
  display: flex;
  gap: 6px;
  align-items: center;
  height: 36px;
}
.ai-card__voice-wave span {
  width: 4px;
  height: 100%;
  background: #f0ece4;
  animation: voice-wave 1.4s ease-in-out infinite alternate;
}
.ai-card__voice-wave span:nth-child(2) { animation-delay: 0.2s; }
.ai-card__voice-wave span:nth-child(3) { animation-delay: 0.4s; }
@keyframes voice-wave {
  0%   { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}
@media (prefers-reduced-motion: reduce) {
  .ai-card__voice-wave span { animation: none; transform: scaleY(0.6); }
}
.ai-card__voice-text {
  font-size: clamp(17px, 1.4vw, 20px);
  line-height: 1.55;
  margin: 0;
  color: #f0ece4;
}
.ai-card__voice-text strong { color: #fff; font-weight: 600; }
.ai-card__voice-hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1px;
  color: rgba(240, 236, 228, 0.6);
  margin: 0;
}

/* Alert variant — critical notification */
.ai-card--alert {
  border-left: 3px solid var(--story-warm);
  position: relative;
}
.ai-card__chip {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
  padding: 4px 8px;
  background: var(--story-warm);
  color: #fff;
}
.ai-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.ai-card__footnote {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px dashed rgba(0, 0, 0, 0.12);
  font-size: 12px;
  color: rgba(8, 7, 11, 0.5);
  font-style: italic;
}

/* Solo variant — single dominant card (Scene 1) */
.ai-card--solo {
  text-align: left;
  align-items: flex-start;
  gap: 10px;
}

/* Menu variant — TV three-card layout (Scene 4) */
.ai-card-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}
.ai-card--menu {
  padding: 18px 16px;
  gap: 6px;
  align-items: flex-start;
}
.ai-card__menu-title {
  font-size: 16px;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.2px;
}
.ai-card__menu-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(8, 7, 11, 0.55);
  margin: 0;
  letter-spacing: 0.3px;
}

/* Explore variant — Scene 5 */
.ai-card--explore {
  align-items: flex-start;
}
.ai-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
}
.ai-card__list li {
  padding: 12px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 15px;
}
.ai-card__list li:first-child { border-top: none; }
.ai-card__list li > span:first-child { font-weight: 500; }
.ai-card__list-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(8, 7, 11, 0.55);
  letter-spacing: 0.2px;
}
.ai-card__hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.5px;
  color: rgba(8, 7, 11, 0.5);
  margin: 0;
  padding-top: 8px;
  border-top: 1px dashed rgba(0, 0, 0, 0.1);
  width: 100%;
}

/* ─── WHY (the disclosure of how) ───────────────────────────── */
.why {
  margin-top: clamp(20px, 2.5vw, 32px);
  padding: 0;
  background: transparent;
  border: 1px solid var(--border);
}
.scene--dark .why { border-color: rgba(240, 236, 228, 0.15); }
.scene--feature .why { border-color: rgba(0, 0, 0, 0.12); }
.why__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  position: relative;
}
.why__summary::-webkit-details-marker { display: none; }
.scene--dark .why__summary { color: #f0ece4; }
.scene--feature .why__summary { color: var(--story-ink); }
.why__summary::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--story-accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.why__summary::after {
  content: '+';
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--text-3);
  width: 20px;
  text-align: center;
}
.why[open] > .why__summary::after { content: '−'; }
.why--feature > .why__summary::before { background: var(--story-warm); }

.why__body {
  padding: 0 20px 20px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}
.scene--dark .why__body { border-top-color: rgba(240, 236, 228, 0.12); }
.scene--feature .why__body { border-top-color: rgba(0, 0, 0, 0.1); }
.why__tokens {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.why__tokens li {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-2);
  padding: 8px 12px;
  background: rgba(104, 137, 180, 0.05);
  border-left: 3px solid rgba(104, 137, 180, 0.4);
}
.scene--dark .why__tokens li {
  color: rgba(240, 236, 228, 0.78);
  background: rgba(104, 137, 180, 0.1);
}
.scene--feature .why__tokens li {
  color: rgba(8, 7, 11, 0.8);
  background: rgba(255, 255, 255, 0.6);
  border-left-color: rgba(184, 138, 74, 0.5);
}
.why__tokens strong {
  font-weight: 600;
  color: var(--text);
  margin-right: 4px;
}
.scene--dark .why__tokens strong { color: #f0ece4; }
.scene--feature .why__tokens strong { color: var(--story-ink); }

.why__rule {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-2);
  margin: 0;
}
.scene--dark .why__rule { color: rgba(240, 236, 228, 0.7); }
.scene--feature .why__rule { color: rgba(8, 7, 11, 0.78); }
.why__rule em {
  font-style: italic;
  color: var(--text);
}
.scene--dark .why__rule em { color: #f0ece4; }
.scene--feature .why__rule em { color: var(--story-ink); }
.why__rule strong { font-weight: 600; }

/* Contrast box — feature scene's "different evening" */
.contrast {
  margin-top: 18px;
  padding: 16px 18px;
  background: rgba(184, 138, 74, 0.08);
  border-left: 3px solid var(--story-warm);
}
.contrast__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--story-warm);
  margin: 0 0 8px;
  font-weight: 600;
}
.contrast__body {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(8, 7, 11, 0.78);
  margin: 0;
}
.contrast__body strong { font-weight: 600; color: var(--story-ink); }

/* ─── CLOSE — what you just watched ────────────────────────── */
.scene-close {
  padding: clamp(72px, 10vw, 140px) clamp(24px, 4vw, 48px);
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.scene-close__inner {
  max-width: var(--story-max);
  margin: 0 auto;
  text-align: center;
}
.scene-close__eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 18px;
}
.scene-close__title {
  font-weight: 500;
  font-size: clamp(28px, 3.6vw, 44px);
  line-height: 1.15;
  letter-spacing: -1.2px;
  margin: 0 0 20px;
  color: var(--text);
}
.scene-close__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--text-2);
}
.scene-close__lede {
  font-size: clamp(16px, 1.2vw, 19px);
  line-height: 1.7;
  color: var(--text-2);
  max-width: 720px;
  margin: 0 auto clamp(40px, 5vw, 60px);
}
.scene-close__lede em { font-style: italic; color: var(--text); }

.scene-close__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  text-align: left;
  margin-bottom: clamp(40px, 5vw, 60px);
}
.scene-close__card {
  padding: 28px 24px;
  border: 1px solid var(--border);
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s var(--ease-hover);
}
.scene-close__card:hover { border-color: var(--text-2); }
.scene-close__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--story-accent);
  margin: 0;
}
.scene-close__copy {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-2);
  margin: 0;
  flex: 1;
}
.scene-close__link {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px dashed var(--text-3);
  align-self: flex-start;
  padding-bottom: 2px;
  transition: color 0.15s var(--ease-hover);
}
.scene-close__link:hover { color: var(--story-accent); border-bottom-color: var(--story-accent); }

/* Advanced console link */
.scene-close__advanced {
  max-width: 540px;
  margin: 0 auto;
  padding: clamp(28px, 3vw, 36px);
  background: var(--story-ink);
  color: #f0ece4;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scene-close__advanced-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(240, 236, 228, 0.5);
  margin: 0;
}
.scene-close__advanced-copy {
  font-size: 14px;
  line-height: 1.65;
  margin: 0;
  color: rgba(240, 236, 228, 0.8);
}
.scene-close__advanced-link {
  align-self: flex-start;
  padding: 10px 18px;
  background: #f0ece4;
  color: var(--story-ink);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  margin-top: 4px;
  transition: background 0.15s var(--ease-hover);
}
.scene-close__advanced-link:hover { background: #fff; }

/* ─── FOOTER ───────────────────────────────────────────────── */
.story-footer {
  border-top: 1px solid var(--border);
  padding: 28px clamp(24px, 4vw, 48px);
  text-align: center;
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.7;
}
.story-footer__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}
.story-footer__breadcrumb a {
  color: var(--text-3);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  transition: color 0.15s var(--ease-hover);
}
.story-footer__breadcrumb a:hover { color: var(--text); border-bottom-color: var(--text-2); }
.story-footer__current { color: var(--text); font-weight: 600; }
.story-footer p { margin: 0; }
.story-footer a {
  color: var(--text-2);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color 0.15s var(--ease-hover);
}
.story-footer a:hover { color: var(--text); }

/* ─── REVEAL ON SCROLL ─────────────────────────────────────── */
.scene__story > * {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.6s var(--ease-out-soft), transform 0.6s var(--ease-out-soft);
}
.scene.is-visible .scene__story > * {
  opacity: 1;
  transform: none;
}
.scene.is-visible .scene__story > *:nth-child(1) { transition-delay: 0.05s; }
.scene.is-visible .scene__story > *:nth-child(2) { transition-delay: 0.15s; }
.scene.is-visible .scene__story > *:nth-child(3) { transition-delay: 0.25s; }
@media (prefers-reduced-motion: reduce) {
  .scene__story > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ─── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .scene__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .scene__chip { margin-left: 0; }
  .ai-card-row { grid-template-columns: 1fr; }
  .ai-card__list li { flex-direction: column; }
}