/* ==========================================================================
   MINAKSHI MAM — DIGITAL BIRTHDAY EXPERIENCE
   Design System & Mobile-First Styling
   A Gift By Arun
   ========================================================================== */

/* --------------------------------------------------------------------------
   01. DESIGN TOKENS (Primitive -> Semantic -> Component)
   -------------------------------------------------------------------------- */
:root {
  /* Color Palette — Rooted in Saffron, Peacock Teal, Ivory & Obsidian */
  --bg-deep: #0B1211;
  --bg-surface: #121C1A;
  --bg-surface-elevated: #182624;
  --bg-surface-glass: rgba(24, 38, 36, 0.75);
  
  --text-primary: #FAF7F2;
  --text-secondary: #C0CCC7;
  --text-muted: #82928D;
  --text-accent: #E27448;
  
  --accent-saffron: #D9693E;
  --accent-saffron-hover: #E87A50;
  --accent-gold: #DDA853;
  --accent-gold-soft: rgba(221, 168, 83, 0.15);
  --accent-teal: #2D6A62;
  --accent-teal-light: #428E83;
  --accent-crimson: #B83A38;

  --border-subtle: rgba(221, 168, 83, 0.14);
  --border-medium: rgba(221, 168, 83, 0.28);
  --border-focused: #DDA853;

  /* Typography Scale */
  --font-display: 'Cinzel', serif;
  --font-body: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.35rem;    /* 21.6px */
  --text-2xl: 1.75rem;   /* 28px */
  --text-3xl: 2.25rem;   /* 36px */
  --text-4xl: 3rem;      /* 48px */

  /* Spacing Scale (4px base) */
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Elevation & Shadows */
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-dramatic: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-gold-glow: 0 0 35px rgba(221, 168, 83, 0.18);

  /* Transitions */
  --ease-cinematic: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 200ms;
  --duration-normal: 400ms;
  --duration-slow: 700ms;
}

/* --------------------------------------------------------------------------
   02. RESET & BASE
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  background-color: var(--bg-deep);
  color: var(--text-primary);
  font-family: var(--font-body);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-deep);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  line-height: 1.65;
  color: var(--text-primary);
}

img, picture {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

/* --------------------------------------------------------------------------
   03. AUDIO ATMOSPHERE TOGGLE
   -------------------------------------------------------------------------- */
.audio-control-pill {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.5rem 0.9rem;
  background: rgba(18, 28, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  color: var(--text-secondary);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: all var(--duration-fast) var(--ease-cinematic);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
}

.audio-control-pill:hover,
.audio-control-pill:focus-visible {
  border-color: var(--accent-gold);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.audio-icon-playing {
  display: none;
  color: var(--accent-gold);
}

.audio-control-pill.is-active .audio-icon-muted {
  display: none;
}

.audio-control-pill.is-active .audio-icon-playing {
  display: block;
  animation: pulse-sound 2s infinite ease-in-out;
}

@keyframes pulse-sound {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

/* --------------------------------------------------------------------------
   04. SCENE ARCHITECTURE & LAYOUT
   -------------------------------------------------------------------------- */
.story-container {
  display: flex;
  flex-direction: column;
  width: 100%;
  position: relative;
}

.scene {
  width: 100%;
  position: relative;
  padding: var(--space-16) var(--space-4);
}

.scene-inner {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  position: relative;
}

.full-width-mobile {
  max-width: 860px;
}

/* Editorial Metadata Stamp (Chapter & Theme indicator) */
.metadata-stamp {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.meta-rule {
  flex: 1;
  max-width: 48px;
  height: 1px;
  background-color: var(--border-medium);
}

.meta-tag {
  color: var(--text-muted);
}

/* Solid Non-Gradient Editorial Headings */
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: var(--space-4);
  letter-spacing: 0.02em;
}

.section-paragraph {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-6);
}

.max-copy-width {
  max-width: 580px;
}

/* --------------------------------------------------------------------------
   05. SCENE 01 — IMMEDIATE HERO SCENE
   -------------------------------------------------------------------------- */
.hero-scene {
  padding: 0;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  background-color: var(--bg-deep);
  position: relative;
  overflow: hidden;
}

.hero-media-wrapper {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  filter: brightness(0.88) contrast(1.04);
  transform: scale(1.01);
  will-change: transform;
  transition: transform var(--duration-slow) var(--ease-cinematic);
}

/* Film Vignette & Atmosphere Wash (Darkening bottom for crisp typography) */
.hero-vignette {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg, 
    rgba(11, 18, 17, 0.25) 0%, 
    rgba(11, 18, 17, 0.45) 45%, 
    rgba(11, 18, 17, 0.88) 75%, 
    var(--bg-deep) 100%
  );
  pointer-events: none;
}

.hero-overlay-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6) var(--space-8);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.35rem 0.75rem;
  background: rgba(18, 28, 26, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-medium);
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-4);
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--accent-saffron);
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 7vw, 3.5rem);
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.1;
  letter-spacing: 0.03em;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
}

.hero-intro {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 480px;
  margin-bottom: var(--space-8);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
}

.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.85rem 1.4rem;
  background: var(--accent-saffron);
  border-radius: 6px;
  color: #FFFFFF;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all var(--duration-fast) var(--ease-cinematic);
  box-shadow: 0 8px 24px rgba(217, 105, 62, 0.35);
  width: fit-content;
}

.scroll-cue:hover,
.scroll-cue:focus-visible {
  background: var(--accent-saffron-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(217, 105, 62, 0.45);
}

.scroll-cue-arrow {
  transition: transform var(--duration-fast) var(--ease-cinematic);
}

.scroll-cue:hover .scroll-cue-arrow {
  transform: translateY(3px);
}

/* --------------------------------------------------------------------------
   06. SCENE 02 — CURIOSITY: Statement of Reverence
   -------------------------------------------------------------------------- */
.curiosity-scene {
  background-color: var(--bg-deep);
  border-bottom: 1px solid rgba(221, 168, 83, 0.08);
}

.editorial-statement {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 1.95rem);
  font-weight: 400;
  line-height: 1.45;
  color: #FFFFFF;
  margin-bottom: var(--space-6);
  padding-left: var(--space-6);
  border-left: 3px solid var(--accent-gold);
}

.editorial-copy {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   07. SCENE 03 — THE PERSON: Asymmetric Editorial Portrait
   -------------------------------------------------------------------------- */
.person-scene {
  background-color: var(--bg-deep);
}

.person-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.photo-frame {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-dramatic);
}

.editorial-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-cinematic);
}

.photo-frame:hover .editorial-photo {
  transform: scale(1.025);
}

.portrait-lead {
  aspect-ratio: 3 / 4;
  max-width: 480px;
  margin: 0 auto;
}

.photo-caption-tag {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  right: var(--space-3);
  padding: 0.5rem 0.75rem;
  background: rgba(18, 28, 26, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  font-size: var(--text-xs);
  color: var(--text-primary);
  font-weight: 500;
  text-align: center;
}

.section-chapter {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-2);
}

.principle-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  margin-top: var(--space-6);
}

.principle-symbol {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--accent-gold);
  line-height: 1;
  padding: 0.25rem 0.5rem;
  background: rgba(221, 168, 83, 0.1);
  border-radius: 4px;
}

.principle-detail {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.principle-detail strong {
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.principle-detail span {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   08. SCENE 04 — THE CIRCULAR MEMORY DIAL (Signature Moment)
   -------------------------------------------------------------------------- */
.memory-dial-scene {
  background-color: #080E0D;
  overflow: hidden;
  padding-left: var(--space-3);
  padding-right: var(--space-3);
}

.dial-header {
  text-align: center;
  max-width: 540px;
  margin: 0 auto var(--space-8);
}

.dial-header .metadata-stamp {
  justify-content: center;
}

.dial-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.memory-dial-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  width: 100%;
}

/* Active Photo Viewing Stage */
.active-memory-stage {
  position: relative;
  width: 100%;
  max-width: 440px;
  aspect-ratio: 3 / 4;
  background-color: var(--bg-surface);
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border-medium);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), var(--shadow-gold-glow);
}

.active-photo-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.active-memory-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 300ms ease, transform 400ms var(--ease-cinematic);
}

.active-memory-stage.is-changing .active-memory-img {
  opacity: 0.5;
  transform: scale(0.97);
}

/* Metadata strip over active memory */
.active-memory-meta {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-6) var(--space-4) var(--space-4);
  background: linear-gradient(180deg, transparent 0%, rgba(8, 14, 13, 0.95) 45%, #080E0D 100%);
  display: flex;
  align-items: flex-end;
  gap: var(--space-3);
  z-index: 2;
}

.meta-index-badge {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-gold);
  background: rgba(18, 28, 26, 0.9);
  padding: 0.35rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border-subtle);
}

.meta-slash {
  opacity: 0.5;
  font-size: 0.75rem;
}

.meta-text-box {
  flex: 1;
}

.active-memory-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.25;
  margin-bottom: 2px;
}

.active-memory-desc {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.4;
}

/* The Tactile Dial Horizon (Thumb Touch Zone) */
.dial-track-wrapper {
  position: relative;
  width: 100%;
  max-width: 600px;
  height: 130px;
  display: flex;
  align-items: center;
  justify-content: center;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
  cursor: grab;
  overflow: hidden;
}

.dial-track-wrapper:active {
  cursor: grabbing;
}

/* Subtle curved astrolabe guide arc */
.dial-astrolabe-ring {
  position: absolute;
  top: 50%;
  left: -20%;
  width: 140%;
  height: 280px;
  border-radius: 50%;
  border-top: 1px dashed rgba(221, 168, 83, 0.25);
  pointer-events: none;
}

/* The nodes revolving along the curved track */
.dial-nodes-strip {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-8);
  will-change: transform;
  transform: translate3d(0, 0, 0);
  transition: transform 120ms ease-out;
}

.dial-node {
  flex-shrink: 0;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
  border: 2px solid rgba(221, 168, 83, 0.2);
  background-color: var(--bg-surface);
  transition: all var(--duration-normal) var(--ease-cinematic);
  opacity: 0.45;
  transform: scale(0.85);
  cursor: pointer;
}

.dial-node img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.dial-node.is-active {
  opacity: 1;
  transform: scale(1.18);
  border-color: var(--accent-gold);
  box-shadow: 0 0 20px rgba(221, 168, 83, 0.4);
}

.dial-drag-hint {
  position: absolute;
  bottom: 4px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  pointer-events: none;
  opacity: 0.75;
}

.drag-hand-icon {
  animation: sway-hand 2.2s infinite ease-in-out;
}

@keyframes sway-hand {
  0%, 100% { transform: translateX(-4px); }
  50% { transform: translateX(4px); }
}

/* Navigation Steppers (Accessible alternative) */
.dial-nav-steppers {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 440px;
  padding: 0 var(--space-2);
}

.dial-step-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.6rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 6px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--duration-fast) var(--ease-cinematic);
}

.dial-step-btn:hover,
.dial-step-btn:focus-visible {
  border-color: var(--accent-gold);
  color: #FFFFFF;
  background: var(--bg-surface-elevated);
}

.dial-progress-dots {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dial-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: rgba(221, 168, 83, 0.25);
  transition: all var(--duration-fast) ease;
  cursor: pointer;
}

.dial-dot.is-active {
  width: 18px;
  border-radius: 9999px;
  background-color: var(--accent-gold);
}

/* --------------------------------------------------------------------------
   09. SCENE 05 — BEYOND THE CLASSROOM: Asymmetric Grid
   -------------------------------------------------------------------------- */
.beyond-scene {
  background-color: var(--bg-deep);
}

.editorial-asymmetric-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.grid-card {
  background-color: var(--bg-surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-subtle);
}

.card-large .photo-frame {
  aspect-ratio: 4 / 5;
}

.grid-card-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.card-stacked-top .photo-frame,
.card-stacked-bottom .photo-frame {
  aspect-ratio: 9 / 12;
}

.card-caption {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.caption-lead {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.caption-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   10. SCENE 06 & 07 — PHYSICS CURIOSITY MOMENTS
   -------------------------------------------------------------------------- */
.physics-scene {
  background-color: #09100F;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.physics-moment-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 10px;
  padding: var(--space-6) var(--space-4);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-subtle);
}

.physics-prompt-header {
  margin-bottom: var(--space-4);
}

.physics-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-2);
}

.physics-question {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.35;
}

.physics-choices-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.physics-choice-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-4) var(--space-2);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  transition: all var(--duration-fast) var(--ease-cinematic);
}

.physics-choice-btn:hover {
  border-color: var(--accent-gold);
}

.physics-choice-btn.is-selected {
  border-color: var(--accent-saffron);
  background: rgba(217, 105, 62, 0.12);
}

.choice-symbol {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: 2px;
}

.choice-label {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.physics-canvas-stage {
  position: relative;
  background: #060B0A;
  border-radius: 6px;
  border: 1px solid rgba(221, 168, 83, 0.1);
  overflow: hidden;
}

#zenith-canvas {
  width: 100%;
  height: 140px;
  display: block;
}

.physics-explanation-reveal {
  padding: var(--space-4);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px solid rgba(221, 168, 83, 0.1);
  background: rgba(18, 28, 26, 0.9);
  display: none;
}

.physics-explanation-reveal.is-visible {
  display: block;
  animation: fade-in 400ms var(--ease-cinematic);
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Prism Interaction */
.prism-box .physics-instruction {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 4px;
}

.prism-slider-wrapper {
  margin: var(--space-4) 0 var(--space-6);
}

.prism-range-input {
  width: 100%;
  accent-color: var(--accent-gold);
  cursor: pointer;
  height: 6px;
  border-radius: 3px;
  background: #060B0A;
}

.prism-spectrum-bar {
  height: 4px;
  width: 100%;
  border-radius: 2px;
  margin-top: var(--space-2);
  background: linear-gradient(90deg, #D9693E 0%, #DDA853 35%, #2D6A62 70%, #B83A38 100%);
  opacity: 0.6;
  transition: opacity 300ms ease;
}

.spectrum-cards-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.spectrum-facet {
  padding: var(--space-3);
  background: var(--bg-surface-elevated);
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 2px;
  transition: all var(--duration-fast) ease;
}

.facet-color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-bottom: 2px;
}

.facet-color-dot.saffron { background-color: var(--accent-saffron); }
.facet-color-dot.gold { background-color: var(--accent-gold); }
.facet-color-dot.teal { background-color: var(--accent-teal-light); }
.facet-color-dot.crimson { background-color: var(--accent-crimson); }

.spectrum-facet strong {
  font-size: var(--text-xs);
  color: #FFFFFF;
}

.spectrum-facet span {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* --------------------------------------------------------------------------
   11. SCENE 08 — THE TAPESTRY OF CELEBRATION
   -------------------------------------------------------------------------- */
.tapestry-scene {
  background-color: var(--bg-deep);
}

.tapestry-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.tapestry-feature-card {
  background-color: var(--bg-surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.tapestry-feature-card .photo-frame {
  aspect-ratio: 3 / 4;
}

.feature-card-meta {
  padding: var(--space-4);
}

.card-kicker {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.card-headline {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #FFFFFF;
  margin: 2px 0 var(--space-2);
}

.card-body {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.tapestry-pair-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

.tapestry-sub-card {
  background-color: var(--bg-surface);
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

.tapestry-sub-card .photo-frame {
  aspect-ratio: 4 / 5;
}

/* --------------------------------------------------------------------------
   12. SCENE 09 — SINCERE APPRECIATION: Sacred Letter
   -------------------------------------------------------------------------- */
.appreciation-scene {
  background-color: #080E0D;
  padding: var(--space-24) var(--space-4);
  text-align: center;
}

.text-centered-editorial {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.sacred-monogram {
  font-family: var(--font-display);
  font-size: 3rem;
  color: var(--accent-gold);
  line-height: 1;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid var(--border-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
  background: rgba(221, 168, 83, 0.05);
}

.appreciation-title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 5vw, 2.3rem);
  font-weight: 600;
  color: #FFFFFF;
  line-height: 1.3;
  margin-bottom: var(--space-6);
  max-width: 580px;
}

.appreciation-letter {
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.85;
  max-width: 560px;
  margin-bottom: var(--space-8);
}

.appreciation-attributes {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-3);
}

.attribute-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.45rem 0.9rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  font-size: var(--text-xs);
  color: var(--text-primary);
}

.attribute-icon {
  color: var(--accent-gold);
}

/* --------------------------------------------------------------------------
   13. SCENE 10 — THE BIRTHDAY CLIMAX
   -------------------------------------------------------------------------- */
.climax-scene {
  background: radial-gradient(circle at center, #162422 0%, var(--bg-deep) 70%);
  padding: var(--space-24) var(--space-4);
}

.climax-dedication-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 14px;
  padding: var(--space-8) var(--space-6);
  text-align: center;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8), var(--shadow-gold-glow);
  overflow: hidden;
}

.climax-halo {
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(221, 168, 83, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.climax-seal {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-gold);
  margin-bottom: var(--space-6);
}

.seal-ring {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-saffron);
}

.climax-photo-tribute {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  margin: 0 auto var(--space-6);
  overflow: hidden;
  border: 3px solid var(--accent-gold);
  box-shadow: 0 0 30px rgba(221, 168, 83, 0.35);
}

.climax-tribute-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.climax-pretitle {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--accent-gold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

/* Headings in solid colors — NO gradient text! */
.climax-headline {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 6vw, 2.8rem);
  font-weight: 700;
  color: #FFFFFF;
  line-height: 1.15;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-4);
}

.highlight-name {
  color: var(--accent-saffron);
}

.climax-wish {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.75;
  max-width: 460px;
  margin: 0 auto var(--space-8);
}

/* Interactive Candle Blessing */
.tribute-interactive-action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.wish-torch-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.85rem 1.6rem;
  background: var(--accent-gold);
  color: #0B1211;
  border-radius: 8px;
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  transition: all var(--duration-fast) var(--ease-cinematic);
  box-shadow: 0 8px 24px rgba(221, 168, 83, 0.3);
}

.wish-torch-btn:hover,
.wish-torch-btn:focus-visible {
  transform: translateY(-2px);
  background: #E8B669;
  box-shadow: 0 12px 30px rgba(221, 168, 83, 0.45);
}

.torch-flame {
  width: 10px;
  height: 14px;
  border-radius: 50% 50% 20% 20%;
  background: var(--accent-saffron);
  box-shadow: 0 0 12px var(--accent-saffron);
  transition: all 300ms ease;
}

.wish-torch-btn.is-lit .torch-flame {
  background: #FFF;
  box-shadow: 0 0 20px #FFD700, 0 0 40px var(--accent-saffron);
  transform: scale(1.3);
}

.wish-counter-text {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   14. SCENE 11 & 12 — CLOSING & THE EMOTIONAL SIGNATURE
   "A Gift By Arun"
   -------------------------------------------------------------------------- */
.signature-scene {
  background-color: #060A09;
  padding: var(--space-24) var(--space-4) var(--space-16);
  border-top: 1px solid rgba(221, 168, 83, 0.1);
}

.signature-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.closing-reflection {
  max-width: 520px;
  margin-bottom: var(--space-12);
}

.closing-words {
  font-family: var(--font-display);
  font-size: var(--text-base);
  color: var(--text-secondary);
  line-height: 1.9;
  font-style: italic;
}

.signature-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  max-width: 280px;
  margin-bottom: var(--space-12);
}

.sig-line {
  flex: 1;
  height: 1px;
  background: var(--border-medium);
}

.sig-symbol {
  color: var(--accent-gold);
  font-size: 1.25rem;
}

.emotional-signature-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.sig-pre {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* The Exact Signature Required */
.signature-exact-mark {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4vw, 1.85rem);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
  padding: 0.5rem 1.5rem;
  border-top: 1px solid rgba(221, 168, 83, 0.2);
  border-bottom: 1px solid rgba(221, 168, 83, 0.2);
  margin-top: var(--space-2);
}

/* --------------------------------------------------------------------------
   15. DESKTOP & TABLET ADAPTATIONS (Preserving Mobile-First Core)
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .scene {
    padding: var(--space-24) var(--space-8);
  }

  .person-layout {
    flex-direction: row;
    align-items: center;
    gap: var(--space-12);
  }

  .person-media-block,
  .person-text-block {
    flex: 1;
  }

  .portrait-lead {
    margin: 0;
  }

  .editorial-asymmetric-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-8);
  }

  .grid-card-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }

  .physics-canvas-stage #zenith-canvas {
    height: 180px;
  }

  .spectrum-cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .tapestry-layout {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: var(--space-8);
    align-items: start;
  }

  .climax-dedication-card {
    padding: var(--space-16) var(--space-12);
    max-width: 680px;
    margin: 0 auto;
  }

  .climax-photo-tribute {
    width: 200px;
    height: 200px;
  }
}

/* --------------------------------------------------------------------------
   16. ACCESSIBILITY: REDUCED MOTION PREFERENCE
   -------------------------------------------------------------------------- */
@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;
  }

  .drag-hand-icon,
  .audio-control-pill.is-active .audio-icon-playing {
    animation: none !important;
  }
}