/* ============================================
   VELARI — House of Time
   Design System & Layout
   ============================================ */

:root {
  --midnight-bronze: #2A241F;
  --brushed-brass: #C8B28A;
  --ivory-stone: #F5F2EA;
  --text-primary: #1F1F1F;
  --walnut-bronze: #6D4C32;
  --steel: #5A5A5A;
  --leather: #3D2B1F;
  --sapphire: #4A6FA5;
  --dark-chamber: #0D0B0A;

  --font-heading: 'Bodoni Moda', 'Cormorant Garamond', Georgia, serif;
  --font-heading-alt: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Inter', 'Source Sans 3', system-ui, sans-serif;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 2rem;
  --space-lg: 4rem;
  --space-xl: 8rem;

  --transition-precision: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-mechanical: 1.2s cubic-bezier(0.16, 1, 0.3, 1);

  --crown-size: 56px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--text-primary);
  background-color: var(--ivory-stone);
  line-height: 1.7;
  overflow-x: hidden;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-sm);
  z-index: 10000;
  padding: var(--space-xs) var(--space-sm);
  background: var(--midnight-bronze);
  color: var(--ivory-stone);
  text-decoration: none;
  font-size: 0.875rem;
  transition: top 0.2s;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
  color: var(--midnight-bronze);
}

p {
  font-family: var(--font-body);
}

/* ============================================
   CROWN NAVIGATION
   ============================================ */

.crown-nav {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  z-index: 9000;
}

.crown-toggle {
  width: var(--crown-size);
  height: var(--crown-size);
  border: none;
  background: var(--midnight-bronze);
  border-radius: 50%;
  cursor: pointer;
  color: var(--brushed-brass);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(42, 36, 31, 0.4);
  transition: transform var(--transition-precision), box-shadow var(--transition-precision);
}

.crown-toggle:hover,
.crown-toggle:focus-visible {
  transform: scale(1.08);
  box-shadow: 0 6px 30px rgba(42, 36, 31, 0.5);
  outline: 2px solid var(--brushed-brass);
  outline-offset: 3px;
}

.crown-wheel {
  width: 36px;
  height: 36px;
}

.crown-menu {
  position: absolute;
  bottom: calc(var(--crown-size) + 12px);
  right: 0;
  width: 280px;
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8) translateY(10px);
  transition: opacity var(--transition-precision), transform var(--transition-precision), visibility var(--transition-precision);
}

.crown-menu.is-open {
  opacity: 1;
  visibility: visible;
  transform: scale(1) translateY(0);
}

.crown-menu[hidden] {
  display: block;
}

.crown-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.crown-items a {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 12px 16px;
  background: var(--midnight-bronze);
  color: var(--brushed-brass);
  text-decoration: none;
  font-family: var(--font-heading-alt);
  font-size: 1rem;
  letter-spacing: 0.05em;
  border-left: 2px solid transparent;
  transition: border-color var(--transition-precision), background var(--transition-precision);
}

.crown-items a::before {
  content: attr(data-label);
  font-size: 0.7rem;
  opacity: 0.5;
  min-width: 24px;
}

.crown-items a:hover,
.crown-items a:focus-visible {
  border-left-color: var(--brushed-brass);
  background: var(--walnut-bronze);
  outline: none;
}

/* ============================================
   SECTION BASE
   ============================================ */

.section {
  position: relative;
  width: 100%;
}

/* ============================================
   SECTION 1 — GRAND CLOCK HALL
   ============================================ */

.section--hall {
  height: 300vh;
  background: radial-gradient(ellipse at center, #1a1612 0%, var(--midnight-bronze) 50%, #0D0B0A 100%);
}

.hall-container {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hall-glass-floor {
  position: relative;
  width: min(90vw, 700px);
  height: min(90vw, 700px);
  perspective: 1200px;
}

.hall-mechanism {
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.05s linear;
}

.mechanism-svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 0 40px rgba(200, 178, 138, 0.15));
}

.logo-engraving {
  font-family: 'Bodoni Moda', serif;
  font-weight: 500;
}

.hall-descent-indicator {
  position: absolute;
  bottom: var(--space-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--brushed-brass);
  opacity: 0.7;
}

.descent-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--brushed-brass), transparent);
  animation: descentPulse 2s ease-in-out infinite;
}

.descent-text {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* ============================================
   SECTION 2 — TWELVE CHAMBERS
   ============================================ */

.section--chambers {
  padding: var(--space-xl) var(--space-md);
  background: var(--ivory-stone);
  min-height: 100vh;
}

.chambers-intro {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-lg);
}

.chamber-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--walnut-bronze);
  margin-bottom: var(--space-sm);
}

.chamber-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: var(--space-sm);
}

.chamber-subtitle {
  color: var(--steel);
  font-size: 1.05rem;
}

.chambers-clockface {
  position: relative;
  width: min(90vw, 800px);
  height: min(90vw, 800px);
  margin: 0 auto;
}

.clockface-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  z-index: 2;
}

.clockface-hand {
  position: absolute;
  bottom: 50%;
  left: 50%;
  transform-origin: bottom center;
  background: var(--walnut-bronze);
}

.clockface-hand--hour {
  width: 3px;
  height: 60px;
  margin-left: -1.5px;
  animation: clockHourHand 43200s linear infinite;
}

.clockface-hand--minute {
  width: 2px;
  height: 80px;
  margin-left: -1px;
  animation: clockMinuteHand 3600s linear infinite;
}

.chamber {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 160px;
  transform: rotate(var(--hour-angle)) translateY(calc(-1 * min(40vw, 360px))) rotate(calc(-1 * var(--hour-angle)));
  transition: transform var(--transition-mechanical);
}

.chamber-door {
  background: linear-gradient(135deg, var(--midnight-bronze) 0%, var(--walnut-bronze) 100%);
  border: 1px solid var(--brushed-brass);
  padding: var(--space-sm);
  cursor: pointer;
  transition: transform var(--transition-precision), box-shadow var(--transition-precision);
  min-height: 140px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.chamber-door:hover,
.chamber-door:focus-within {
  transform: scale(1.05);
  box-shadow: 0 8px 30px rgba(42, 36, 31, 0.3);
}

.chamber-hour {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--brushed-brass);
  letter-spacing: 0.15em;
  opacity: 0.7;
}

.chamber-name {
  font-size: 1.1rem;
  color: var(--ivory-stone);
  margin: 4px 0;
}

.chamber-philosophy {
  font-size: 0.75rem;
  color: var(--brushed-brass);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity var(--transition-precision), max-height var(--transition-mechanical);
  line-height: 1.5;
}

.chamber-door:hover .chamber-philosophy,
.chamber-door:focus-within .chamber-philosophy {
  opacity: 0.85;
  max-height: 200px;
  margin-top: 8px;
}

/* ============================================
   SECTION 3 — GEAR LIBRARY
   ============================================ */

.section--library {
  padding: var(--space-xl) 0;
  background: linear-gradient(180deg, var(--ivory-stone) 0%, #E8E0D0 100%);
  min-height: 200vh;
}

.library-header {
  text-align: center;
  padding: 0 var(--space-md);
  margin-bottom: var(--space-lg);
}

.library-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--walnut-bronze);
}

.library-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-top: var(--space-sm);
}

.library-wall {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.library-rotation-container {
  position: relative;
  width: min(95vw, 900px);
  height: min(95vw, 900px);
  transition: transform 0.1s linear;
}

.library-gear {
  position: absolute;
  cursor: pointer;
  transition: transform var(--transition-precision);
}

.library-gear:hover {
  transform: scale(1.08);
  z-index: 10;
}

.library-gear svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 12px rgba(42, 36, 31, 0.2));
}

.library-gear--large {
  width: 180px;
  height: 180px;
}

.library-gear--large:nth-child(1) { top: 5%; left: 10%; }
.library-gear--large:nth-child(2) { top: 15%; right: 8%; }
.library-gear--large:nth-child(3) { bottom: 20%; left: 15%; }

.library-gear--medium {
  width: 110px;
  height: 110px;
}

.library-gear--medium:nth-child(4) { top: 35%; left: 35%; }
.library-gear--medium:nth-child(5) { top: 50%; right: 20%; }
.library-gear--medium:nth-child(6) { bottom: 35%; right: 30%; }
.library-gear--medium:nth-child(7) { bottom: 10%; left: 40%; }

.library-gear--small {
  width: 70px;
  height: 70px;
}

.library-gear--small:nth-child(8) { top: 8%; left: 45%; }
.library-gear--small:nth-child(9) { top: 25%; right: 35%; }
.library-gear--small:nth-child(10) { top: 60%; left: 5%; }
.library-gear--small:nth-child(11) { bottom: 45%; right: 5%; }
.library-gear--small:nth-child(12) { bottom: 5%; right: 45%; }
.library-gear--small:nth-child(13) { top: 45%; left: 55%; }

.gear-content {
  position: absolute;
  bottom: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition-precision);
  pointer-events: none;
}

.library-gear:hover .gear-content {
  opacity: 1;
}

.gear-content h3,
.gear-content h4 {
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.gear-content p {
  font-size: 0.8rem;
  color: var(--steel);
}

/* ============================================
   SECTION 4 — WATCHMAKER'S WORKBENCH
   ============================================ */

.section--workbench {
  padding: var(--space-xl) var(--space-md);
  background: var(--leather);
  min-height: 100vh;
}

.workbench-scene {
  max-width: 1100px;
  margin: 0 auto;
}

.workbench-surface {
  position: relative;
  height: 500px;
  background: linear-gradient(180deg, #5C4033 0%, #4A3328 50%, #3D2B1F 100%);
  border: 3px solid #6D4C32;
  border-radius: 4px;
  box-shadow: inset 0 2px 20px rgba(0,0,0,0.3), 0 10px 40px rgba(0,0,0,0.4);
  margin-bottom: var(--space-lg);
}

.workbench-object {
  position: absolute;
  cursor: pointer;
  transition: transform var(--transition-precision);
}

.workbench-object:hover,
.workbench-object:focus-visible {
  transform: scale(1.05);
  z-index: 5;
  outline: none;
}

.workbench-object--sketch { top: 8%; left: 5%; width: 180px; }
.workbench-object--lens { top: 15%; right: 12%; }
.workbench-object--screws { bottom: 20%; left: 15%; }
.workbench-object--component { top: 40%; left: 35%; width: 90px; }
.workbench-object--tools { bottom: 15%; right: 20%; }
.workbench-object--movement-partial { top: 10%; left: 45%; width: 130px; }

.object-inner {
  position: relative;
}

.object-reveal {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  width: 260px;
  padding: var(--space-sm);
  background: var(--midnight-bronze);
  color: var(--brushed-brass);
  font-size: 0.8rem;
  line-height: 1.5;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-precision), visibility var(--transition-precision);
  pointer-events: none;
  border: 1px solid var(--walnut-bronze);
}

.workbench-object:hover .object-reveal,
.workbench-object:focus-visible .object-reveal,
.workbench-object.is-active .object-reveal {
  opacity: 1;
  visibility: visible;
}

.lens-glass {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4), rgba(74,111,165,0.3));
  border: 3px solid var(--brushed-brass);
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.screw-tray {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  background: #2A241F;
  border-radius: 2px;
}

.tiny-screw {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #4A6FA5, #2A4A6F);
}

.tool-set {
  display: flex;
  gap: 12px;
}

.tool {
  display: block;
  background: var(--brushed-brass);
}

.tool--tweezers { width: 4px; height: 50px; border-radius: 1px; }
.tool--driver { width: 6px; height: 40px; border-radius: 1px; background: var(--steel); }
.tool--file { width: 8px; height: 45px; border-radius: 1px; background: #888; }

.workbench-caption {
  text-align: center;
  color: var(--ivory-stone);
}

.workbench-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-brass);
}

.workbench-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ivory-stone);
  margin: var(--space-sm) 0;
}

.workbench-desc {
  color: var(--brushed-brass);
  opacity: 0.8;
}

/* ============================================
   SECTION 5 — MOVEMENT GALLERY
   ============================================ */

.section--gallery {
  min-height: 100vh;
  background: var(--dark-chamber);
}

.gallery-darkness {
  position: relative;
  min-height: 100vh;
  padding: var(--space-xl) var(--space-md);
}

.gallery-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.gallery-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-brass);
}

.gallery-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ivory-stone);
  margin-top: var(--space-sm);
}

.gallery-space {
  position: relative;
  height: 60vh;
  max-width: 1000px;
  margin: 0 auto;
}

.movement {
  position: absolute;
  cursor: pointer;
  transition: transform var(--transition-mechanical);
}

.movement--1 { top: 10%; left: 10%; }
.movement--2 { top: 5%; right: 15%; }
.movement--3 { bottom: 15%; left: 20%; }
.movement--4 { bottom: 10%; right: 10%; }

.movement-body svg {
  width: 140px;
  height: 140px;
  filter: drop-shadow(0 0 20px rgba(200, 178, 138, 0.2));
}

.movement-detail {
  position: absolute;
  bottom: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 240px;
  text-align: center;
  opacity: 0;
  transition: opacity var(--transition-precision);
  pointer-events: none;
}

.movement:hover .movement-detail,
.movement:focus-visible .movement-detail,
.movement.is-inspecting .movement-detail {
  opacity: 1;
}

.movement-detail h3 {
  color: var(--brushed-brass);
  font-size: 1rem;
  margin-bottom: 4px;
}

.movement-detail p {
  color: var(--ivory-stone);
  opacity: 0.7;
  font-size: 0.8rem;
}

.gallery-light-reflection {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(ellipse at 30% 20%, rgba(74, 111, 165, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

/* ============================================
   SECTION 6 — PASSAGE OF TIME CORRIDOR
   ============================================ */

.section--corridor {
  position: relative;
  min-height: 400vh;
  background: var(--midnight-bronze);
}

.corridor-track {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.corridor-era {
  position: absolute;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateX(100%);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.corridor-era.is-active {
  opacity: 1;
  transform: translateX(0);
}

.corridor-era.is-past {
  opacity: 0;
  transform: translateX(-100%);
}

.era-architecture {
  position: absolute;
  inset: 0;
  opacity: 0.15;
}

.era-column {
  position: absolute;
  bottom: 0;
  width: 60px;
  height: 70%;
  background: var(--brushed-brass);
}

.era-column:first-child { left: 15%; }
.era-column:last-child { right: 15%; }

.era-pediment {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 40px;
  background: var(--brushed-brass);
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}

.era-factory {
  position: absolute;
  bottom: 0;
  left: 20%;
  width: 200px;
  height: 50%;
  background: var(--steel);
}

.era-pipe {
  position: absolute;
  top: 20%;
  width: 20px;
  height: 60%;
  background: #888;
  border-radius: 10px;
}

.era-pipe:first-of-type { right: 25%; }
.era-pipe:last-of-type { right: 30%; top: 30%; height: 40%; }

.era-glass {
  position: absolute;
  bottom: 0;
  left: 10%;
  width: 80%;
  height: 60%;
  background: linear-gradient(180deg, rgba(200,178,138,0.2), rgba(200,178,138,0.05));
  border: 1px solid var(--brushed-brass);
}

.era-steel-beam {
  position: absolute;
  top: 30%;
  left: 0;
  width: 100%;
  height: 8px;
  background: var(--steel);
}

.era-hologram {
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 200px;
  border: 1px solid var(--sapphire);
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(74, 111, 165, 0.3);
}

.era-light-ring {
  position: absolute;
  bottom: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 400px;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--sapphire), transparent);
}

.era-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 500px;
  padding: var(--space-md);
}

.era-date {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--brushed-brass);
  display: block;
  margin-bottom: var(--space-sm);
}

.era-content h3 {
  font-size: 1.8rem;
  color: var(--ivory-stone);
  margin-bottom: var(--space-sm);
}

.era-content p {
  color: var(--brushed-brass);
  opacity: 0.85;
  font-size: 1rem;
}

.corridor-title-panel {
  position: absolute;
  bottom: var(--space-lg);
  left: var(--space-md);
  z-index: 5;
}

.corridor-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-brass);
  opacity: 0.6;
}

.corridor-title {
  font-size: 1.5rem;
  color: var(--ivory-stone);
  opacity: 0.8;
}

/* ============================================
   SECTION 7 — OBSERVATORY OF SECONDS
   ============================================ */

.section--observatory {
  padding: var(--space-xl) var(--space-md);
  background: radial-gradient(ellipse at center top, #2A241F 0%, var(--dark-chamber) 70%);
  min-height: 100vh;
}

.observatory-dome-interior {
  max-width: 1100px;
  margin: 0 auto;
}

.observatory-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.observatory-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-brass);
}

.observatory-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ivory-stone);
  margin-top: var(--space-sm);
}

.pendulum-field {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  padding: var(--space-md) 0;
}

.pendulum {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.pendulum-arm {
  width: 2px;
  height: 120px;
  background: var(--brushed-brass);
  transform-origin: top center;
  position: relative;
}

.pendulum-bob {
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--brushed-brass), var(--walnut-bronze));
  box-shadow: 0 4px 15px rgba(0,0,0,0.4);
}

.pendulum-story {
  text-align: center;
  max-width: 240px;
}

.pendulum-year {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--brushed-brass);
  display: block;
  margin-bottom: 4px;
}

.pendulum-story h4 {
  color: var(--ivory-stone);
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.pendulum-story p {
  color: var(--brushed-brass);
  opacity: 0.7;
  font-size: 0.85rem;
}

/* ============================================
   SECTION 8 — LETTERS OF LEGACY
   ============================================ */

.section--letters {
  padding: var(--space-xl) var(--space-md);
  background: var(--ivory-stone);
  min-height: 100vh;
}

.letters-archive {
  max-width: 900px;
  margin: 0 auto;
}

.letters-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.letters-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--walnut-bronze);
}

.letters-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin: var(--space-sm) 0;
}

.letters-subtitle {
  color: var(--steel);
}

.drawer-cabinet {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-md);
}

.drawer {
  cursor: pointer;
}

.drawer-front {
  background: linear-gradient(180deg, #6D4C32 0%, #5C4033 100%);
  padding: var(--space-md);
  border: 2px solid #4A3328;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform var(--transition-precision), box-shadow var(--transition-precision);
  position: relative;
}

.drawer-front::before {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(200, 178, 138, 0.2);
  pointer-events: none;
}

.drawer:hover .drawer-front,
.drawer:focus-visible .drawer-front {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(42, 36, 31, 0.2);
}

.drawer-label {
  font-family: var(--font-heading);
  color: var(--brushed-brass);
  font-size: 1rem;
  letter-spacing: 0.1em;
}

.drawer-handle {
  width: 30px;
  height: 8px;
  background: var(--brushed-brass);
  border-radius: 4px;
}

.drawer-content {
  padding: var(--space-md);
  background: #FAF8F3;
  border: 1px solid #E0D8C8;
  border-top: none;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--transition-mechanical), opacity var(--transition-precision), padding var(--transition-mechanical);
}

.drawer.is-open .drawer-content {
  max-height: 300px;
  opacity: 1;
  padding: var(--space-md);
}

.drawer.is-open .drawer-content[hidden] {
  display: block;
}

.letter-handwriting {
  font-family: var(--font-heading-alt);
  font-style: italic;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.drawer-content cite {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--walnut-bronze);
  font-style: normal;
}

/* ============================================
   SECTION 9 — ASTRONOMICAL DOME
   ============================================ */

.section--dome {
  min-height: 100vh;
  background: var(--dark-chamber);
  position: relative;
}

.dome-container {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

#star-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.dome-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 600px;
  padding: var(--space-md);
}

.dome-overline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--brushed-brass);
}

.dome-title {
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--ivory-stone);
  margin: var(--space-sm) 0;
}

.dome-desc {
  color: var(--brushed-brass);
  opacity: 0.8;
  margin-bottom: var(--space-lg);
}

.constellation-info {
  background: rgba(42, 36, 31, 0.6);
  border: 1px solid var(--walnut-bronze);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  backdrop-filter: blur(10px);
}

.constellation-name {
  color: var(--brushed-brass);
  font-size: 1.3rem;
  margin-bottom: var(--space-xs);
}

.constellation-detail {
  color: var(--ivory-stone);
  opacity: 0.85;
  font-size: 0.9rem;
}

.constellation-selector {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  justify-content: center;
}

.constellation-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--walnut-bronze);
  color: var(--brushed-brass);
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background var(--transition-precision), border-color var(--transition-precision);
}

.constellation-btn:hover,
.constellation-btn:focus-visible,
.constellation-btn.active {
  background: var(--walnut-bronze);
  border-color: var(--brushed-brass);
  outline: none;
}

/* ============================================
   SECTION 10 — ETERNAL CLOCK
   ============================================ */

.section--eternal {
  min-height: 100vh;
  background: var(--dark-chamber);
}

.eternal-chamber {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl) var(--space-md);
}

.eternal-darkness {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(74, 111, 165, 0.05) 0%, var(--dark-chamber) 70%);
}

.eternal-timepiece {
  position: relative;
  width: min(80vw, 400px);
  height: min(80vw, 400px);
  margin-bottom: var(--space-lg);
  transition: transform var(--transition-mechanical);
}

.eternal-svg {
  width: 100%;
  height: 100%;
}

.sapphire-reflection {
  position: absolute;
  top: 10%;
  left: 20%;
  width: 40%;
  height: 20%;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  border-radius: 50%;
  pointer-events: none;
}

.eternal-message {
  text-align: center;
  position: relative;
  z-index: 2;
}

.eternal-headline {
  font-size: clamp(1.8rem, 5vw, 3.5rem);
  color: var(--ivory-stone);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
  font-weight: 400;
}

.eternal-control {
  display: flex;
  justify-content: center;
}

.enter-velari {
  position: relative;
  width: 160px;
  height: 160px;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.control-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid var(--brushed-brass);
  transition: transform var(--transition-mechanical), border-color var(--transition-precision);
}

.control-ring:first-child {
  width: 100%;
  height: 100%;
}

.control-ring--inner {
  width: 70%;
  height: 70%;
  border-width: 1px;
  opacity: 0.6;
}

.control-text {
  position: relative;
  z-index: 2;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brushed-brass);
}

.enter-velari:hover .control-ring,
.enter-velari:focus-visible .control-ring {
  border-color: var(--ivory-stone);
}

.enter-velari:hover,
.enter-velari:focus-visible {
  outline: none;
}

.eternal-chamber.is-alive .eternal-timepiece {
  transform: scale(1.05);
}

.eternal-chamber.is-alive .control-ring {
  animation: controlPulse 2s ease-in-out infinite;
}

.site-footer {
  margin-top: var(--space-xl);
  text-align: center;
  position: relative;
  z-index: 2;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--brushed-brass);
  letter-spacing: 0.3em;
}

.footer-tagline {
  font-family: var(--font-heading-alt);
  font-size: 0.85rem;
  color: var(--brushed-brass);
  opacity: 0.6;
  margin-bottom: var(--space-sm);
}

.footer-contact a {
  color: var(--brushed-brass);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition-precision);
}

.footer-contact a:hover {
  color: var(--ivory-stone);
}

.footer-copy {
  margin-top: var(--space-sm);
  font-size: 0.75rem;
  color: var(--steel);
  opacity: 0.5;
}

/* ============================================
   RESPONSIVE — MOBILE FIRST
   ============================================ */

@media (max-width: 768px) {
  :root {
    --crown-size: 48px;
  }

  .section--hall {
    height: 250vh;
  }

  .chamber {
    width: 130px;
  }

  .chamber-door {
    min-height: 110px;
    padding: 8px;
  }

  .chamber-name {
    font-size: 0.9rem;
  }

  .chambers-clockface {
    height: min(120vw, 600px);
  }

  .chamber {
    transform: rotate(var(--hour-angle)) translateY(calc(-1 * min(48vw, 260px))) rotate(calc(-1 * var(--hour-angle)));
  }

  .workbench-surface {
    height: 400px;
  }

  .workbench-object--sketch { width: 120px; }
  .workbench-object--movement-partial { width: 90px; }

  .movement-body svg {
    width: 100px;
    height: 100px;
  }

  .gallery-space {
    height: 80vh;
  }

  .pendulum-field {
    grid-template-columns: 1fr;
  }

  .library-gear--large {
    width: 120px;
    height: 120px;
  }

  .library-gear--medium {
    width: 80px;
    height: 80px;
  }

  .library-gear--small {
    width: 50px;
    height: 50px;
  }

  .crown-menu {
    width: 220px;
    right: -8px;
  }

  .enter-velari {
    width: 130px;
    height: 130px;
  }
}

@media (max-width: 480px) {
  .chambers-clockface {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
    width: 100%;
    height: auto;
    position: static;
  }

  .chamber {
    position: static;
    width: 100%;
    transform: none;
  }

  .clockface-center {
    display: none;
  }

  .chamber-philosophy {
    opacity: 0.85;
    max-height: 200px;
    margin-top: 8px;
  }

  .drawer-cabinet {
    grid-template-columns: 1fr;
  }

  .constellation-selector {
    flex-direction: column;
    align-items: center;
  }
}

/* Reduced Motion */
@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;
  }

  .hall-mechanism {
    transform: none !important;
  }
}