/* ===========================
   VARIABLES & RESET
   =========================== */

:root {
  --bg-primary: #050510;
  --bg-secondary: #0a0a20;
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.65);
  --text-muted: rgba(255, 255, 255, 0.4);
  --accent-yellow: #ffd700;
  --accent-purple: #7c3aed;
  --accent-purple-light: #a78bfa;
  --accent-purple-glow: rgba(124, 58, 237, 0.35);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 215, 0, 0.4);
  --font-heading: 'Space Grotesk', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s var(--ease);
  --transition: 0.4s var(--ease);
  --transition-slow: 0.7s var(--ease);
  --header-h: 56px;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===========================
   LOADING SCREEN
   =========================== */

.loading-screen {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.8s ease;
}

.loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-content {
  text-align: center;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(255, 215, 0, 0.15);
  border-top-color: var(--accent-yellow);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: spin 0.8s linear infinite;
}

.loading-content p {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===========================
   CANVAS LAYERS
   =========================== */

#stars3d {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

#scene3d {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: auto;
  touch-action: none;
}

/* ===========================
   HEADER
   =========================== */

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 1.5rem;
  background: rgba(5, 5, 16, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-yellow);
  text-decoration: none;
  letter-spacing: 3px;
  transition: color var(--transition-fast);
}

.logo:hover {
  color: #fff;
}

nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

#lang-toggle {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.7rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.78rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  transition: border-color var(--transition-fast);
  line-height: 1;
}

#lang-toggle:hover {
  border-color: var(--border-hover);
}

.lang-opt {
  cursor: pointer;
  opacity: 0.45;
  transition: all var(--transition-fast);
  font-weight: 500;
  padding: 0.1rem 0.15rem;
}

.lang-opt.active {
  opacity: 1;
  color: var(--accent-yellow);
}

.lang-sep {
  opacity: 0.25;
  user-select: none;
}

/* ===========================
   OVERLAYS
   =========================== */

.overlay {
  position: fixed;
  z-index: 1;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.overlay.active {
  opacity: 1;
}

body.ui-focus .overlay {
  z-index: 15;
}

body.ui-focus #scene3d {
  pointer-events: none;
}

.overlay.active .overlay-panel,
.brands-footer {
  pointer-events: auto;
}

/* --- Main Overlay --- */
#main-overlay {
  inset: 0;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: flex-start;
  padding: calc(var(--header-h) + 1.2rem) 2rem 5.5rem;
  background: transparent;
}

.overlay-panel {
  width: clamp(240px, 26vw, 360px);
  background: rgba(5, 5, 16, 0.35);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.4);
  opacity: 0.65;
  transition: opacity var(--transition), background var(--transition), transform var(--transition), box-shadow var(--transition);
  position: relative;
  z-index: 1;
}

.overlay-panel:hover {
  opacity: 1;
  background: rgba(5, 5, 16, 0.85);
  transform: translateY(-2px);
  z-index: 15;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.5);
}

.hero-section {
  text-align: left;
  pointer-events: none;
}

#hero-name {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 3vw, 2.1rem);
  font-weight: 700;
  background: linear-gradient(135deg, #fff 30%, var(--accent-yellow));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 0.4rem;
  text-shadow: 0 0 60px rgba(255, 215, 0, 0.2);
}

.hero-tagline {
  font-size: clamp(0.68rem, 1.1vw, 0.85rem);
  color: var(--accent-purple-light);
  margin-bottom: 0.6rem;
  letter-spacing: 0.02em;
}

.hero-desc {
  font-size: clamp(0.64rem, 1vw, 0.78rem);
  color: var(--text-secondary);
  max-width: 100%;
  line-height: 1.6;
}

/* --- Brand Logos Marquee --- */
.brands-section {
  width: 100%;
  text-align: center;
}

.brands-footer {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 12;
  padding: 1.2rem 0 1.3rem;
  background: linear-gradient(to top, rgba(5, 5, 16, 0.9) 0%, rgba(5, 5, 16, 0.4) 60%, transparent 100%);
}

.brands-label {
  font-family: var(--font-heading);
  font-size: 0.82rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.85rem;
}

.brands-wrapper {
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}

.brands-track {
  display: flex;
  align-items: center;
  width: max-content;
  animation: marquee 40s linear infinite;
}

.brands-track img {
  height: 44px;
  margin: 0 2.1rem;
  opacity: 0.45;
  filter: grayscale(1) brightness(1.5);
  transition: all 0.3s ease;
  flex-shrink: 0;
  object-fit: contain;
}

.brands-track img:hover {
  opacity: 0.8;
  filter: grayscale(0);
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* --- World Overlay --- */
#world-overlay {
  inset: 0;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: flex-start;
  padding: calc(var(--header-h) + 1.2rem) 2rem 5.5rem;
  background: transparent;
}

.back-btn {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.82rem;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  align-self: flex-start;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.back-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  background: rgba(255, 255, 255, 0.1);
}

.back-arrow {
  font-size: 1.1rem;
  line-height: 1;
}

.world-info-panel {
  margin-top: 1rem;
  text-align: left;
}

#world-name {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  font-weight: 700;
  margin-bottom: 0.4rem;
  line-height: 1.2;
}

.world-description {
  font-size: clamp(0.72rem, 1.1vw, 0.82rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

.world-instruction {
  margin-top: 0.6rem;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-style: italic;
  animation: pulse-opacity 3s ease-in-out infinite;
}

@keyframes pulse-opacity {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ===========================
   3D LABELS
   =========================== */

#labels-container {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}

.world-label,
.moon-label {
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(-50%, 0);
  text-align: center;
  pointer-events: none;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.world-label .label-name {
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  text-shadow: 0 0 12px rgba(0, 0, 0, 0.8), 0 2px 8px rgba(0, 0, 0, 0.6);
  display: block;
  letter-spacing: 0.02em;
}

.world-label .label-sub {
  font-size: 0.6rem;
  color: var(--text-muted);
  text-shadow: 0 0 8px rgba(0, 0, 0, 0.8);
  display: block;
  margin-top: 0.1rem;
}

.moon-label .label-name {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--text-primary);
  text-shadow: 0 0 10px rgba(0, 0, 0, 0.9), 0 2px 6px rgba(0, 0, 0, 0.7);
  display: block;
}

.sun-label {
  position: absolute;
  left: 0;
  top: 0;
  transform: translate(-50%, 0);
  text-align: center;
  pointer-events: none;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

.sun-label .label-name {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--accent-yellow);
  text-shadow: 0 0 15px rgba(255, 215, 0, 0.5), 0 2px 8px rgba(0, 0, 0, 0.6);
  display: block;
  animation: pulse-opacity 3s ease-in-out infinite;
}

/* ===========================
   MODALS
   =========================== */

.modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}

.modal.active {
  opacity: 1;
  pointer-events: auto;
}

.modal.active .modal-content,
.modal.active .about-content {
  transform: translateY(0) scale(1);
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  background: linear-gradient(180deg, rgba(20, 10, 40, 0.97), rgba(5, 5, 16, 0.99));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 480px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: translateY(16px) scale(0.96);
  transition: transform var(--transition);
}

.modal-close {
  position: absolute;
  top: 0.65rem;
  right: 0.85rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  cursor: pointer;
  transition: color var(--transition-fast);
  line-height: 1;
  padding: 0.2rem;
  z-index: 1;
}

.modal-close:hover {
  color: var(--text-primary);
}

.modal-accent {
  width: 100%;
  height: 3px;
  border-radius: 2px;
  margin-bottom: 1.2rem;
  opacity: 0.8;
}

.modal-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 6px;
  margin-bottom: 0.8rem;
}

#modal-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.7rem;
  padding-right: 1.5rem;
  line-height: 1.3;
}

#modal-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.4rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.6rem 1.2rem;
  background: var(--accent-purple);
  color: white;
  text-decoration: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background: color-mix(in srgb, var(--accent-purple) 80%, white);
  transform: translateY(-1px);
  box-shadow: 0 4px 20px var(--accent-purple-glow);
}

.no-link-text {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ===========================
   ABOUT MODAL
   =========================== */

.about-content {
  position: relative;
  background: linear-gradient(180deg, rgba(20, 10, 40, 0.97), rgba(5, 5, 16, 0.99));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 560px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  transform: translateY(16px) scale(0.96);
  transition: transform var(--transition);
}

.about-header {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-bottom: 1.2rem;
}

.about-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent-purple);
  box-shadow: 0 0 24px var(--accent-purple-glow);
  flex-shrink: 0;
}

.about-header h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  line-height: 1.2;
}

.about-tagline {
  font-size: 0.78rem;
  color: var(--accent-purple-light);
  margin-top: 0.25rem;
  line-height: 1.4;
}

.about-bio {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.3rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.stat {
  text-align: center;
  padding: 0.6rem 0.2rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.stat:hover {
  border-color: var(--accent-purple-glow);
}

.stat-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent-yellow);
  line-height: 1.2;
}

.stat-label {
  display: block;
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.about-links {
  display: flex;
  justify-content: center;
  gap: 1.3rem;
}

.about-links a {
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
}

.about-links a:hover {
  color: var(--accent-yellow);
  transform: translateY(-2px);
}

/* ===========================
   SCROLLBAR
   =========================== */

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(167, 139, 250, 0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(167, 139, 250, 0.45); }
* { scrollbar-width: thin; scrollbar-color: rgba(167, 139, 250, 0.25) transparent; }

/* ===========================
   RESPONSIVE — TABLET
   =========================== */

@media (max-width: 900px) {
  .hero-desc {
    max-width: 400px;
    margin: 0 auto;
  }

  #main-overlay,
  #world-overlay {
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: calc(var(--header-h) + 0.8rem) 1.2rem 6.2rem;
    background: transparent;
  }

  .overlay-panel {
    width: min(92%, 460px);
    padding: 1.1rem 1.2rem;
  }

  .hero-section {
    text-align: center;
  }

  .world-info-panel {
    margin-top: 0.8rem;
    text-align: center;
  }
}

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

@media (max-width: 768px) {
  :root {
    --header-h: 50px;
  }

  header {
    padding: 0 1rem;
  }

  .hero-section {
    margin-bottom: 0.6rem;
  }

  .hero-desc {
    max-width: 320px;
    font-size: 0.7rem;
  }

  .brands-track img {
    height: 34px;
    margin: 0 1.4rem;
  }

  .brands-label {
    font-size: 0.7rem;
  }

  .world-description {
    font-size: 0.7rem;
  }

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-photo {
    width: 64px;
    height: 64px;
  }

  .about-header h2 {
    font-size: 1.15rem;
  }

  .modal-content, .about-content {
    padding: 1.5rem;
  }

  .world-label .label-name {
    font-size: 0.68rem;
  }

  .moon-label .label-name {
    font-size: 0.6rem;
  }
}

/* ===========================
   RESPONSIVE — SMALL MOBILE
   =========================== */

@media (max-width: 480px) {
  #hero-name {
    font-size: 1.4rem;
  }

  .hero-tagline {
    font-size: 0.68rem;
  }

  .hero-desc {
    font-size: 0.65rem;
    max-width: 280px;
  }

  .brands-track img {
    height: 30px;
    margin: 0 1rem;
  }

  .about-content {
    width: 95%;
    padding: 1.2rem;
  }

  .about-header { gap: 0.8rem; }
  .about-photo { width: 56px; height: 56px; }
  .about-header h2 { font-size: 1.05rem; }
  .about-tagline { font-size: 0.7rem; }
  .about-bio { font-size: 0.78rem; }
}