@font-face {
  font-family: 'WTSkrappaTRIAL';
  src: url('./fonts/WTSkrappaTRIAL-Wide.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'ABCDiatype';
  src: url('./ABCDiatype-Regular.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}

:root {
  --text: #f5f7ff;
  font-family: 'WTSkrappaTRIAL', 'Inter', 'Helvetica Neue', Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  background: #f7f6f3;
  color: var(--text);
  overscroll-behavior: none;
  transition: background 0.4s ease;
  scroll-behavior: smooth;
}

body {
  overflow-x: hidden;
  overflow-y: auto;
}

body.dark-mode,
html.dark-mode {
  background: #0a0a0a;
}

html.intro-active,
body.intro-active {
  overflow: hidden !important;
  height: 100dvh;
  touch-action: none;
  overscroll-behavior: none;
  position: fixed;
  width: 100%;
}

body:not(.intro-active) {
  touch-action: pan-y;
}

#scene-container {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  cursor: default;
}

#intro-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  background: #f7f6f3; /* Match body background */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  transition: opacity 0.6s ease, visibility 0.6s ease;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  overflow: hidden;
}

#intro-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#intro-overlay video {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  object-fit: cover;
  pointer-events: none;
}

#intro-loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: rgba(8, 9, 13, 0.7);
  background: rgba(255, 255, 255, 0.5);
  animation: loadingBlink 1s ease-in-out infinite;
  z-index: 2002;
}

#intro-loading.hidden {
  display: none;
}

@keyframes loadingBlink {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

#intro-cursor-prompt {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: lowercase;
  color: rgba(8, 9, 13, 0.7);
  background: rgba(255, 255, 255, 0.5);
  border: none;
  opacity: 0;
  pointer-events: none;
  z-index: 2001;
  transition: opacity 0.5s ease-out;
}

#intro-cursor-prompt.visible {
  opacity: 1;
}

#scene-container.physics-mode {
  cursor: grab;
}

#ui-overlay {
  position: fixed;
  top: 50vh;
  left: 2rem;
  transform: translateY(-50%);
  padding: 0;
  pointer-events: none;
  z-index: 100;
  text-align: left;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  opacity: 0;
  transition: opacity 0.4s ease;
}

#ui-overlay.visible {
  opacity: 1;
}

#ui-overlay h1 {
  margin: 0;
  font-size: 12px;
  font-weight: 400;
  color: #08090d;
  letter-spacing: 0.05em;
  opacity: 0.6;
  transition: color 0.4s ease;
  white-space: nowrap;
  line-height: 1.4;
}

#grid-mode-icon {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: auto;
  fill: rgba(8, 9, 13, 0.28);
  pointer-events: auto;
  cursor: pointer;
  opacity: 1;
  transition: opacity 0.3s ease, visibility 0.3s ease, fill 0.4s ease;
}

#grid-mode-icon.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#solo-info-panel {
  position: fixed;
  top: 50vh;
  right: 2rem;
  transform: translateY(-50%);
  z-index: 120;
  opacity: 0;
  text-align: right;
  pointer-events: none;
  transition: opacity 0.35s ease, color 0.4s ease;
}

#solo-info-panel.visible {
  opacity: 1;
}

.solo-info-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  width: 100%;
  text-align: right;
}

#solo-info-title {
  margin: 0;
  font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
  font-size: clamp(0.9rem, 1.8vw, 1.3rem);
  font-weight: 400;
  letter-spacing: 0.02em;
  color: rgba(8, 9, 13, 0.6);
  transition: color 0.4s ease;
}

#solo-info-body {
  display: none;
}


#solo-go-top {
  display: none;
  font-family: 'Inter', 'Helvetica Neue', Arial, sans-serif;
  font-size: clamp(0.85rem, 1.6vw, 1.1rem);
  color: rgba(8, 9, 13, 0.6);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 0.2s ease, opacity 0.2s ease;
}

#solo-go-top:hover {
  color: rgba(8, 9, 13, 0.9);
}


#solo-info-panel.show-go-top #solo-info-title {
  display: none;
}

#solo-info-panel.show-go-top #solo-go-top {
  display: block;
}

/* Model List Sidebar - Desktop Only */
#model-list {
  display: none;
}

@media (min-width: 901px) {
  /* Hide solo-info-panel on desktop - model list now shows active model */
  #solo-info-panel {
    display: none !important;
  }

  #model-list {
    display: block;
    position: fixed;
    top: 50%;
    right: 2rem;
    transform: translateY(-50%);
    z-index: 110;
    pointer-events: auto;
    opacity: 0;
    transition: opacity 0.3s ease;
  }

  #model-list.visible {
    opacity: 1;
  }

  #model-list-items {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.1rem;
  }

  .model-list-item {
    font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
    cursor: pointer;
    padding: 0.05rem 0;
    text-align: right;
    white-space: nowrap;
    transform-origin: right center;
    transition: color 0.2s ease, opacity 0.3s ease, filter 0.4s ease, transform 0.4s ease, font-size 0.2s ease;
    /* Default styling - will be overridden by JS for progressive sizing */
  }

  .model-list-item.blurring-out {
    filter: blur(4px);
    opacity: 0;
    transform: translateX(10px);
  }

  /* Active model - same size as 010 Totems (12px) */
  .model-list-item.active {
    font-size: 12px;
    color: rgba(8, 9, 13, 0.6);
  }

  .model-list-item:hover {
    color: rgba(8, 9, 13, 0.8) !important;
  }

  /* Go to top link - replaces menu when scrolled, centered in same position */
  #model-list-go-top {
    font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
    font-size: 12px;
    color: rgba(8, 9, 13, 0.6);
    text-decoration: none;
    text-align: right;
    position: absolute;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    opacity: 0;
    pointer-events: none;
    transition: color 0.2s ease, opacity 0.4s ease;
  }

  #model-list-go-top.visible {
    opacity: 1;
    pointer-events: auto;
  }

  #model-list-go-top:hover {
    color: rgba(8, 9, 13, 0.9);
  }

}

@media (max-width: 900px) {
  /* Hide desktop UI on mobile */
  #ui-overlay {
    display: none;
  }

  #solo-info-panel {
    display: none;
  }
}

/* Mobile Header */
#mobile-header {
  display: none;
}

@media (max-width: 900px) {
  #mobile-header {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem 1rem;
    padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    z-index: 150;
    pointer-events: none;
    justify-content: space-between;
    align-items: flex-end;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }

  #mobile-header.hidden {
    transform: translateY(100%);
    opacity: 0;
  }

  #mobile-header-left {
    pointer-events: auto;
  }

  #mobile-header-left h1 {
    margin: 0;
    font-size: 0.75rem;
    font-weight: 400;
    color: rgba(8, 9, 13, 0.6);
    letter-spacing: 0.02em;
    text-align: left;
    line-height: 1.4;
  }

  #mobile-header-right {
    pointer-events: auto;
    max-width: 55%;
  }

  #model-selector-btn {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(8, 9, 13, 0.08);
    border-radius: 20px;
    font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 400;
    color: rgba(8, 9, 13, 0.8);
    cursor: pointer;
    padding: 0.5rem 0.9rem;
    text-align: right;
    transition: background 0.2s ease, transform 0.15s ease;
  }

  #model-selector-btn:active {
    transform: scale(0.97);
  }

  #model-selector-btn.open {
    background: rgba(255, 255, 255, 0.9);
  }

  #current-model-name {
    max-width: calc(50vw - 3rem);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.3;
  }

  .dropdown-arrow {
    transition: transform 0.25s ease;
    flex-shrink: 0;
    opacity: 0.6;
  }

  #model-selector-btn.open .dropdown-arrow {
    transform: rotate(180deg);
  }

  #mobile-go-top {
    display: none;
    font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
    font-size: 0.85rem;
    color: rgba(8, 9, 13, 0.8);
    text-decoration: none;
    padding: 0.5rem 0.9rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(8, 9, 13, 0.08);
    border-radius: 20px;
  }

  #mobile-go-top.visible {
    display: block;
  }

  /* Hide model selector when go-to-top is visible */
  #mobile-header-right:has(#mobile-go-top.visible) #model-selector-btn {
    display: none;
  }
}

/* Dropdown Menu */
#model-dropdown {
  position: fixed;
  bottom: 4.5rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.85);
  border-radius: 16px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
  z-index: 200;
  min-width: 180px;
  max-width: calc(100vw - 2rem);
  max-height: 50vh;
  overflow-y: auto;
  overflow-x: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

#model-dropdown.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

#model-dropdown.hidden {
  opacity: 0;
  transform: translateY(10px) scale(0.95);
  pointer-events: none;
}

#model-dropdown-list {
  padding: 0.5rem 0;
}

.dropdown-item {
  padding: 0.65rem 1.2rem;
  font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
  font-size: 0.85rem;
  color: rgba(8, 9, 13, 0.5);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.15s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dropdown-item:active {
  transform: scale(0.98);
}

.dropdown-item.active {
  color: #08090d;
  background: rgba(8, 9, 13, 0.04);
}

.dropdown-info-btn {
  padding: 0.75rem 1.2rem;
  font-family: 'WTSkrappaTRIAL', 'Inter', sans-serif;
  font-size: 0.8rem;
  color: rgba(8, 9, 13, 0.4);
  cursor: pointer;
  border-bottom: 1px solid rgba(8, 9, 13, 0.06);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background 0.2s ease, color 0.2s ease;
}

.dropdown-info-btn:active {
  background: rgba(0, 0, 0, 0.04);
}

/* Mobile intro overlay */
@media (pointer: coarse) {
  /* Hide grid mode icon on mobile */
  #grid-mode-icon {
    display: none;
  }
}

/* Text Section */
#text-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: #f7f6f3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 6rem 2rem 2rem;
  box-sizing: border-box;
}

#text-content {
  max-width: 640px;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.text-line {
  font-family: 'ABCDiatype', 'Helvetica Neue', Arial, sans-serif;
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  line-height: 1.7;
  letter-spacing: -0.05em;
  color: #08090d;
  margin: 0;
}

.text-line.spacer {
  height: 1rem;
}

/* Mobile: instant reveal, no transitions to avoid scroll jank */
@media (max-width: 900px) {
  .text-word {
    opacity: 0;
    display: inline;
  }

  .text-word.word-revealed {
    opacity: 0.9;
  }
}

/* Desktop: animated reveal with blur */
@media (min-width: 901px) {
  .text-word {
    opacity: 0;
    transform: translateY(2px);
    filter: blur(4px);
    transition: opacity 0.2s ease, transform 0.2s ease, filter 0.2s ease;
    display: inline;
    will-change: opacity, transform, filter;
  }

  .text-word.word-revealed {
    opacity: 0.9;
    transform: translateY(0);
    filter: blur(0);
  }
}

.text-line strong {
  font-weight: 600;
  color: inherit;
}

#page-footer {
  margin-top: auto;
  padding-top: 4rem;
  font-family: 'ABCDiatype', 'Helvetica Neue', Arial, sans-serif;
  font-size: 10px;
  color: #08090d;
  opacity: 0.4;
  letter-spacing: 0.03em;
  text-align: center;
}

#research-link {
  margin-top: 2.5rem;
  font-family: 'ABCDiatype', 'Helvetica Neue', Arial, sans-serif;
  font-size: clamp(0.9rem, 2vw, 1.1rem);
  line-height: 1.7;
  color: #08090d;
  width: 100%;
  max-width: 640px;
  align-self: center;
  text-align: left;
  text-decoration: none;
}

#research-link:hover {
  text-decoration: underline;
}

#page-footer a {
  color: inherit;
  text-decoration: none;
}

#page-footer a:hover {
  text-decoration: underline;
}

/* Dark Mode Styles */
body.dark-mode #ui-overlay h1 {
  color: #f5f7ff;
}

body.dark-mode #grid-mode-icon {
  fill: rgba(245, 247, 255, 0.35);
}

body.dark-mode #solo-info-title {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode #solo-go-top {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode #solo-go-top:hover {
  color: rgba(245, 247, 255, 0.9);
}

body.dark-mode .model-list-item {
  color: rgba(245, 247, 255, 0.4);
}

body.dark-mode .model-list-item.active {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode .model-list-item:hover {
  color: rgba(245, 247, 255, 0.8) !important;
}

body.dark-mode #model-list-go-top {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode #model-list-go-top:hover {
  color: rgba(245, 247, 255, 0.9);
}

body.dark-mode #mobile-header-left h1 {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode #model-selector-btn {
  color: rgba(245, 247, 255, 0.85);
  background: rgba(30, 30, 35, 0.7);
  border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode #model-selector-btn.open {
  background: rgba(30, 30, 35, 0.9);
}

body.dark-mode #model-dropdown {
  background: rgba(20, 20, 25, 0.85);
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

body.dark-mode .dropdown-item {
  color: rgba(245, 247, 255, 0.6);
}

body.dark-mode .dropdown-item.active {
  color: #f5f7ff;
  background: rgba(255, 255, 255, 0.08);
}

body.dark-mode .dropdown-info-btn {
  color: rgba(245, 247, 255, 0.4);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

body.dark-mode #mobile-go-top {
  color: rgba(245, 247, 255, 0.85);
  background: rgba(30, 30, 35, 0.7);
  border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode #text-section {
  background: #0a0a0a;
}

body.dark-mode .text-line {
  color: #f5f7ff;
}

body.dark-mode .text-word.word-revealed {
  opacity: 0.85;
}

body.dark-mode #page-footer {
  color: #f5f7ff;
}

body.dark-mode #research-link {
  color: #f5f7ff;
}

/* Party Mode Effects */
body.party-mode .text-word.word-revealed {
  animation: partyText 0.3s infinite;
}

@keyframes partyText {
  0% { color: #ff0066; }
  14% { color: #ff0022; }
  28% { color: #0044ff; }
  42% { color: #00ff66; }
  56% { color: #ff00ff; }
  70% { color: #00ffff; }
  84% { color: #ffff00; }
  100% { color: #ff0066; }
}