:root {
  --bg-1: #0f1016;
  --bg-2: #191b26;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --border: rgba(255, 255, 255, 0.12);
  --text: #f6f7fb;
  --muted: rgba(246, 247, 251, 0.74);
  --accent: #ff4d5f;
  --accent-soft: rgba(255, 77, 95, 0.18);
  --violet: #8b5cf6;
  --green: #34d399;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --transition: 320ms ease;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: 'Noto Sans SC', sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.16), transparent 30%),
    radial-gradient(circle at top right, rgba(255, 77, 95, 0.08), transparent 24%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  transition: background 1.4s ease, color var(--transition);
}

body.phase-reveal {
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 77, 95, 0.16), transparent 24%),
    radial-gradient(circle at 80% 10%, rgba(251, 191, 36, 0.14), transparent 24%),
    radial-gradient(circle at 50% 100%, rgba(139, 92, 246, 0.22), transparent 30%),
    linear-gradient(160deg, #18101b, #241626 52%, #101522);
}

.page-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at center, rgba(255,255,255,0.05), transparent 42%);
}

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 28px auto 40px;
  position: relative;
  z-index: 1;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.bw-surface {
  filter: grayscale(1);
  transition: filter 1s ease, background var(--transition), border-color var(--transition), transform var(--transition);
}

body.phase-quiz .hero,
body.phase-quiz .scene,
body.phase-quiz .info-card,
body.phase-reveal .hero,
body.phase-reveal .scene,
body.phase-reveal .info-card,
body.phase-reveal .step-card,
body.phase-reveal .quiz {
  filter: grayscale(0.16);
}

body.phase-reveal .reveal,
body.phase-reveal #apple-card {
  filter: grayscale(0);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 24px;
  padding: 28px;
  margin-bottom: 20px;
}

.eyebrow,
.mini-label,
.compare-label {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: var(--muted);
  margin: 0 0 10px;
}

.hero h1,
.section-heading h2,
.scene-header h2,
.info-card h3,
.step-card h3,
.compare-card h3,
.reflection-box h3 {
  margin: 0;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.05;
  margin-bottom: 14px;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.8;
}

.progress-panel {
  padding: 20px;
  border-radius: 22px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  align-self: center;
}

.progress-meta,
.progress-tags,
.scene-header,
.section-heading,
.quiz-actions,
.scene-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.progress-meta,
.section-note,
.idea-list,
.step-card p,
.choice-text,
.choice-feedback,
.compare-card p,
.reflection-box p,
#apple-desc {
  color: var(--muted);
}

.progress-meta {
  font-size: 0.92rem;
  margin-bottom: 12px;
}

.progress-bar {
  height: 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}

#progress-fill {
  width: 33.333%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--violet), var(--accent));
  transition: width 0.55s ease;
}

.progress-tags {
  margin-top: 12px;
}

.tag,
.status-pill {
  font-size: 0.84rem;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
}

.tag.active,
.status-pill {
  background: rgba(139, 92, 246, 0.18);
  border-color: rgba(139, 92, 246, 0.34);
}

.layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.68fr);
  gap: 20px;
}

.scene {
  padding: 24px;
}

.room-visual {
  position: relative;
  min-height: 460px;
  border-radius: var(--radius-xl);
  margin: 20px 0 18px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02)),
    linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.1));
}

.room-frame {
  position: absolute;
  inset: 20px;
  border: 3px solid rgba(255,255,255,0.2);
  border-radius: 26px;
}

.mary-silhouette {
  position: absolute;
  left: 68px;
  bottom: 84px;
  width: 86px;
  height: 180px;
}

.mary-head,
.mary-body,
.book-stack span,
.desk,
.wave-board,
.apple-card,
.apple,
.color-bloom {
  position: absolute;
}

.mary-head {
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: rgba(255,255,255,0.62);
  left: 14px;
  top: 0;
}

.mary-body {
  width: 86px;
  height: 126px;
  border-radius: 28px 28px 18px 18px;
  background: linear-gradient(180deg, rgba(255,255,255,0.72), rgba(255,255,255,0.28));
  left: 0;
  bottom: 0;
}

.desk {
  left: 170px;
  right: 72px;
  bottom: 70px;
  height: 18px;
  border-radius: 999px;
  background: rgba(255,255,255,0.22);
}

.book-stack {
  position: absolute;
  left: 230px;
  bottom: 88px;
  width: 90px;
  height: 72px;
}

.book-stack span {
  left: 0;
  right: 0;
  height: 18px;
  border-radius: 8px;
  background: rgba(255,255,255,0.24);
}

.book-stack span:nth-child(1) { bottom: 0; }
.book-stack span:nth-child(2) { bottom: 22px; width: 76px; }
.book-stack span:nth-child(3) { bottom: 44px; width: 62px; }

.wave-board {
  top: 52px;
  left: 56px;
  width: 230px;
  padding: 20px 18px;
  border-radius: 18px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.08);
}

.wave-line {
  height: 34px;
  border-radius: 999px;
  margin-bottom: 10px;
  background:
    radial-gradient(circle at 4px 17px, rgba(255,255,255,0.75) 0 3px, transparent 4px),
    linear-gradient(90deg, transparent, rgba(255,255,255,0.62), transparent);
  opacity: 0.9;
}

.wave-line.short {
  width: 72%;
}

.wave-label {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.74);
}

.apple-zone {
  position: absolute;
  right: 48px;
  top: 112px;
  width: min(44%, 280px);
  min-width: 220px;
}

.apple-card {
  position: relative;
  min-height: 210px;
  padding: 22px 18px 18px;
  border-radius: 22px;
  background: rgba(255,255,255,0.11);
  border: 1px solid rgba(255,255,255,0.1);
  overflow: hidden;
}

.apple {
  position: relative;
  width: 108px;
  height: 108px;
  margin: 0 auto 12px;
  border-radius: 47% 47% 42% 42%;
  background: linear-gradient(160deg, #ff8a80 0%, #ff4d5f 48%, #b41027 100%);
  box-shadow: inset -12px -18px 20px rgba(0,0,0,0.18), 0 12px 25px rgba(255, 77, 95, 0.35);
}

.apple::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 36px;
  left: 45px;
  top: -20px;
  border-radius: 10px;
  background: #6d4c41;
  transform: rotate(-18deg);
}

.apple::after {
  content: "";
  position: absolute;
  width: 34px;
  height: 18px;
  right: 16px;
  top: -6px;
  border-radius: 34px 4px 34px 4px;
  background: linear-gradient(135deg, #70d35d, #267f47);
  transform: rotate(16deg);
}

.apple-copy {
  position: relative;
  z-index: 1;
  text-align: left;
}

#apple-title {
  display: block;
  margin-bottom: 8px;
  font-size: 1.02rem;
}

#apple-desc {
  margin: 0;
  line-height: 1.7;
  font-size: 0.95rem;
}

.color-bloom {
  inset: 0;
  opacity: 0;
  background:
    radial-gradient(circle at 72% 38%, rgba(255, 77, 95, 0.28), transparent 18%),
    radial-gradient(circle at 82% 24%, rgba(251, 191, 36, 0.18), transparent 16%),
    radial-gradient(circle at 28% 76%, rgba(139, 92, 246, 0.16), transparent 22%);
  transition: opacity 1.2s ease;
  pointer-events: none;
}

.panel-stack {
  display: grid;
  gap: 20px;
}

.info-card,
.step-card,
.quiz,
.reveal {
  padding: 24px;
}

.idea-list {
  padding-left: 20px;
  margin: 18px 0 0;
  line-height: 1.8;
}

.idea-list li + li {
  margin-top: 10px;
}

.primary-btn,
.ghost-btn,
.choice-card {
  border: none;
  font: inherit;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition), opacity var(--transition);
}

.primary-btn,
.ghost-btn {
  padding: 14px 18px;
  border-radius: 14px;
  font-weight: 700;
}

.primary-btn {
  color: #fff;
  background: linear-gradient(135deg, var(--violet), var(--accent));
  box-shadow: 0 12px 28px rgba(139, 92, 246, 0.28);
}

.primary-btn:hover:not(:disabled),
.choice-card:hover,
.ghost-btn:hover {
  transform: translateY(-2px);
}

.primary-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ghost-btn {
  color: var(--text);
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
}

.hidden {
  display: none;
}

.quiz,
.reveal {
  margin-top: 20px;
}

.section-note {
  margin: 0;
  font-size: 0.95rem;
}

.choice-grid,
.compare-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 22px;
}

.choice-card {
  text-align: left;
  padding: 18px;
  border-radius: 20px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  min-height: 156px;
}

.choice-card.selected {
  background: rgba(139, 92, 246, 0.18);
  border-color: rgba(139, 92, 246, 0.42);
  box-shadow: 0 14px 32px rgba(139, 92, 246, 0.18);
}

.choice-title {
  display: block;
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.choice-text {
  display: block;
  line-height: 1.7;
  font-size: 0.94rem;
}

.choice-feedback {
  margin-top: 16px;
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  line-height: 1.75;
}

.quiz-actions {
  margin-top: 18px;
  justify-content: flex-end;
}

.compare-card {
  padding: 22px;
  border-radius: 22px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
}

.compare-card.after {
  background: linear-gradient(180deg, rgba(255, 77, 95, 0.14), rgba(139, 92, 246, 0.12));
  border-color: rgba(255, 77, 95, 0.24);
}

.compare-card p {
  margin-top: 12px;
  line-height: 1.8;
}

.reflection-box {
  margin-top: 18px;
  padding: 22px;
  border-radius: 22px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
}

.reflection-box p {
  margin: 10px 0 0;
  line-height: 1.9;
}

body.phase-reveal .color-bloom {
  opacity: 1;
}

body.phase-reveal .apple-card {
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.16);
  box-shadow: 0 18px 40px rgba(255, 77, 95, 0.14);
}

body.phase-reveal .status-pill {
  background: rgba(52, 211, 153, 0.16);
  border-color: rgba(52, 211, 153, 0.28);
}

@media (max-width: 980px) {
  .hero,
  .layout-grid,
  .choice-grid,
  .compare-grid {
    grid-template-columns: 1fr;
  }

  .app-shell {
    width: min(100% - 20px, 1180px);
  }

  .progress-panel {
    order: -1;
  }
}

@media (max-width: 720px) {
  .app-shell {
    margin-top: 16px;
    margin-bottom: 24px;
  }

  .hero,
  .scene,
  .info-card,
  .step-card,
  .quiz,
  .reveal {
    padding: 18px;
    border-radius: 22px;
  }

  .scene-header,
  .scene-actions,
  .section-heading,
  .progress-meta,
  .progress-tags,
  .quiz-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .room-visual {
    min-height: 520px;
  }

  .apple-zone {
    left: 28px;
    right: 28px;
    top: 220px;
    width: auto;
    min-width: 0;
  }

  .desk {
    left: 32px;
    right: 32px;
  }

  .mary-silhouette {
    left: 38px;
  }

  .wave-board {
    width: calc(100% - 56px);
    left: 28px;
  }

  .scene-actions .primary-btn,
  .scene-actions .ghost-btn,
  .quiz-actions .primary-btn {
    width: 100%;
  }
}