/* ==========================================================================
   ARCHIVE — Single-Font Simple JS 3D Funnel Stylesheet
   ========================================================================== */

:root {
  --bg-color: #080809;
  --bg-elevated: rgba(8, 8, 9, 0.94);
  --text-primary: #ffffff;
  --text-secondary: #8a8a92;
  --text-muted: #52525a;
  --border-color: rgba(255, 255, 255, 0.14);
  --card-placeholder: #161618;
  --cursor-bg: #ffffff;
  --cursor-text: #080809;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Full White Background in Light Mode */
body.light-theme {
  --bg-color: #ffffff;
  --bg-elevated: rgba(255, 255, 255, 0.96);
  --text-primary: #0a0a0c;
  --text-secondary: #62626a;
  --text-muted: #9898a0;
  --border-color: rgba(0, 0, 0, 0.12);
  --card-placeholder: #f0f0f2;
  --cursor-bg: #0a0a0c;
  --cursor-text: #ffffff;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  user-select: none;
  -webkit-user-select: none;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: geometricPrecision;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* ==========================================================================
   1. Simple JS 3D Funnel Stage (Zero WebGL, Zero CSS 3D Upscaling Blur)
   ========================================================================== */

#webgl-container {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  z-index: 1;
  overflow: hidden;
  cursor: grab;
}

#webgl-container:active {
  cursor: grabbing;
}

.funnel-viewport {
  width: 100%;
  height: 100%;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 1800px;
  perspective-origin: 50% 46%;
  overflow: hidden;
  transition: opacity 0.4s ease, transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.funnel-viewport.is-backgrounded {
  opacity: 0.06;
  transform: scale(0.95);
  pointer-events: none;
}

.funnel-viewport.is-zoomed {
  opacity: 0.18;
}

.funnel-world {
  position: relative;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
}

.funnel-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
  will-change: transform;
}

/* Native High-Resolution 3D Cylinder Card (100% Opaque - Never See-Through) */
.ring-card {
  position: absolute;
  width: 236px;
  left: -118px;
  top: -128px;
  transform-origin: center center;
  transform-style: preserve-3d;
  cursor: pointer;
  opacity: 1;
  will-change: transform;
}

.ring-card-img-box {
  position: relative;
  width: 100%;
  background: var(--bg-color);
  overflow: hidden;
  border-radius: 0px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: box-shadow 0.25s ease, transform 0.25s ease;
}

body.light-theme .ring-card-img-box {
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.ring-card.aspect-4-5 .ring-card-img-box {
  height: 214px;
}

.ring-card.aspect-1-1 .ring-card-img-box {
  height: 192px;
}

.ring-card.aspect-3-4 .ring-card-img-box {
  height: 224px;
}

.ring-card.is-hovered .ring-card-img-box {
  transform: scale(1.04);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
}

.ring-card-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  pointer-events: none;
}

/* Solid depth shade overlay (darkens far-back cards without making cards transparent) */
.ring-card-shade {
  position: absolute;
  inset: 0;
  background-color: var(--bg-color);
  opacity: 0;
  pointer-events: none;
}

/* Razor-Sharp Left-Aligned Captions (Hidden when facing away on back of cylinder) */
.ring-card-caption {
  padding-top: 9px;
  text-align: left;
  pointer-events: none;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.ring-card-title {
  font-family: var(--font-sans);
  font-size: 13.5px;
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ring-card-sub {
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

/* ==========================================================================
   2. Unified Single-Font Top Header Bar
   ========================================================================== */

.ui-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  padding: 0 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 40;
  background: linear-gradient(to bottom, var(--bg-color) 45%, transparent 100%);
  pointer-events: none;
}

.header-brand, .header-nav, .header-right {
  pointer-events: auto;
}

.header-brand {
  text-decoration: none;
  color: var(--text-primary);
  display: inline-flex;
  align-items: center;
}

.brand-sans {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.header-nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  text-decoration: none;
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 1px;
  background-color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-back-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.header-back-btn:hover {
  transform: translateX(-3px);
}

.header-back-btn.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.theme-switcher {
  display: flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-sans);
  font-size: 11.5px;
}

.theme-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 3px;
  transition: color 0.2s ease;
}

.theme-btn:hover {
  color: var(--text-primary);
}

.theme-btn.active {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.theme-sep {
  color: var(--text-muted);
}

/* ==========================================================================
   3. Bottom Status Footer
   ========================================================================== */

.bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 48px;
  padding: 0 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 25;
  pointer-events: none;
}

.bottom-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.meta-tag {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
}

.bottom-divider {
  color: var(--text-muted);
  font-size: 10px;
}

.bottom-hint {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ==========================================================================
   4. Shared Section View Container
   ========================================================================== */

.section-view {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: var(--bg-elevated);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.section-view.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* ==========================================================================
   5. OBJECTS — Scattered Editorial Index
   ========================================================================== */

.sandcastle-canvas {
  max-width: 1380px;
  margin: 0 auto;
  padding: 96px 40px 80px;
  position: relative;
}

.sandcastle-center-title {
  text-align: center;
  margin: 24px 0 54px;
}

.sandcastle-center-title h2 {
  font-family: var(--font-sans);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.sandcastle-filter-row {
  display: inline-flex;
  gap: 8px;
}

.filter-chip {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  padding: 7px 16px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-chip.active,
.filter-chip:hover {
  background: var(--text-primary);
  color: var(--bg-color);
  border-color: var(--text-primary);
}

.sandcastle-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 48px 36px;
  align-items: start;
}

.sandcastle-card {
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.sandcastle-card.scatter-2 {
  margin-top: 36px;
}

.sandcastle-card.scatter-3 {
  margin-top: -10px;
}

.sandcastle-card.scatter-4 {
  margin-top: 22px;
}

.sandcastle-card:hover {
  transform: translateY(-5px);
}

.sc-img-wrap {
  width: 100%;
  background: var(--card-placeholder);
  overflow: hidden;
  border-radius: 0px;
}

.sc-img-wrap.aspect-4-5 { aspect-ratio: 4 / 5; }
.sc-img-wrap.aspect-1-1 { aspect-ratio: 1 / 1; }
.sc-img-wrap.aspect-3-4 { aspect-ratio: 3 / 4; }

.sc-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

.sandcastle-card:hover .sc-img-wrap img {
  transform: scale(1.04);
}

.sc-meta {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sc-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.sc-sub {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

/* ==========================================================================
   6. ART — Layered Editorial Collage Showcase
   ========================================================================== */

.collage-stage {
  width: 100%;
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.collage-composition {
  position: relative;
  width: min(860px, 90vw);
  height: min(620px, 76vh);
}

.collage-frame {
  position: absolute;
  overflow: hidden;
  background: var(--card-placeholder);
  cursor: pointer;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.collage-frame:hover {
  transform: scale(1.04);
  z-index: 12 !important;
}

.collage-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.collage-frame-label {
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 500;
  color: #ffffff;
  background: rgba(0, 0, 0, 0.62);
  padding: 3px 8px;
}

.collage-frame.slot-top {
  width: 28%;
  height: 28%;
  top: 0%;
  left: 34%;
  z-index: 1;
}

.collage-frame.slot-left {
  width: 28%;
  height: 30%;
  top: 16%;
  left: 14%;
  z-index: 2;
}

.collage-frame.slot-beige {
  width: 48%;
  height: 55%;
  top: 22%;
  left: 34%;
  z-index: 3;
}

.collage-frame.slot-center-main {
  width: 56%;
  height: 48%;
  top: 46%;
  left: 12%;
  z-index: 4;
}

.collage-frame.slot-center-small {
  width: 20%;
  height: 18%;
  top: 41%;
  left: 46%;
  z-index: 6;
}

.collage-frame.slot-bottom-right {
  width: 20%;
  height: 38%;
  top: 64%;
  left: 52%;
  z-index: 7;
}

.collage-caption-bar {
  position: absolute;
  bottom: 58px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 24px;
  font-family: var(--font-sans);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  z-index: 15;
}

/* ==========================================================================
   7. ABOUT — Minimal Statement Screen
   ========================================================================== */

.statement-stage {
  width: 100%;
  height: 100vh;
  max-width: 680px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 24px;
}

.statement-line {
  font-size: clamp(16px, 2vw, 22px);
  font-weight: 400;
  line-height: 1.45;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.statement-sub {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-secondary);
  max-width: 520px;
}

.statement-disciplines {
  display: flex;
  gap: 36px;
  margin-top: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.statement-disciplines strong {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--text-primary);
}

.pill-return-btn {
  margin-top: 14px;
  background: var(--text-primary);
  color: var(--bg-color);
  border: none;
  padding: 10px 24px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.pill-return-btn:hover {
  opacity: 0.88;
  transform: translateY(-2px);
}

/* ==========================================================================
   8. Detail Lightbox Overlay
   ========================================================================== */

.detail-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.detail-overlay.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.detail-backdrop {
  position: absolute;
  inset: 0;
  background: var(--bg-elevated);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.detail-stage {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 680px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.detail-top-meta {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.detail-frame-wrap {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-img-box {
  width: min(440px, 80vw);
  height: min(480px, 58vh);
  background: var(--card-placeholder);
  overflow: hidden;
}

.detail-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.detail-heading-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.detail-clean-title {
  font-family: var(--font-sans);
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.detail-bottom-bar {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.detail-desc {
  font-size: 13px;
  line-height: 1.55;
  color: var(--text-secondary);
  max-width: 500px;
}

.detail-nav-controls {
  display: flex;
  align-items: center;
  gap: 24px;
}

.text-action-btn {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.text-action-btn:hover {
  opacity: 0.65;
}

/* ==========================================================================
   9. Custom Magnetic Cursor
   ========================================================================== */

#custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  margin-top: -5px;
  margin-left: -5px;
  pointer-events: none;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: width 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              height 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              margin 0.25s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.2s ease;
}

#cursor-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--text-primary);
}

#cursor-label {
  display: none;
  color: var(--cursor-text);
  font-family: var(--font-sans);
  font-size: 8.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

#custom-cursor.is-hovering {
  width: 46px;
  height: 46px;
  margin-top: -23px;
  margin-left: -23px;
  background-color: var(--cursor-bg);
}

#custom-cursor.is-hovering #cursor-dot {
  display: none;
}

#custom-cursor.is-hovering #cursor-label {
  display: block;
}

@media (hover: none) and (pointer: coarse) {
  #custom-cursor {
    display: none !important;
  }
}

/* ==========================================================================
   10. Responsive Breakpoints
   ========================================================================== */

@media (max-width: 900px) {
  .ui-header {
    padding: 0 18px;
  }

  .header-nav {
    gap: 16px;
  }

  .sandcastle-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px 18px;
  }

  .bottom-hint {
    display: none;
  }

  .statement-disciplines {
    flex-direction: column;
    gap: 14px;
  }
}