:root {
  --bg-color: #030305;
  --accent-cyan: #00e5ff;
  --accent-cyan-glow: rgba(0, 229, 255, 0.4);
  --accent-gold: #f5d061;
  --accent-gold-glow: rgba(245, 208, 97, 0.4);
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(10, 10, 15, 0.65);
  
  --font-main: 'Inter', sans-serif;
  --font-heading: 'Outfit', sans-serif;

  --section-padding-v: 120px;
  --section-padding-h: 5vw;
  --title-size: 3.5rem;
  --card-padding: 40px;
}

@media (max-width: 768px) {
  :root {
    --section-padding-v: 60px;
    --title-size: 2.5rem;
    --card-padding: 25px;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  overflow-x: hidden;
  line-height: 1.6;
}

#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
}

/* ── NAVIGATION ── */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 20px 6vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 100;
  background: rgba(3, 3, 5, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

.logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--accent-cyan);
  text-shadow: 0 0 10px var(--accent-cyan-glow);
  letter-spacing: 2px;
}

.nav-links a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-left: 40px;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--accent-cyan);
}

#mobile-menu-toggle {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Mobile Menu Drawer */
#mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  height: 100vh;
  z-index: 150;
  display: flex;
  flex-direction: column;
  padding: 80px 40px;
  gap: 30px;
  transition: right 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: -10px 0 50px rgba(0,0,0,0.5);
}

#mobile-menu.active {
  right: 0;
}

#mobile-menu a {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
  text-transform: uppercase;
}

#mobile-menu-close {
  background: none;
  border: none;
  color: var(--accent-cyan);
  font-size: 1rem;
  font-weight: 800;
  cursor: pointer;
  text-align: left;
  margin-bottom: 20px;
}

/* ── HERO SECTION ── */
#hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  position: relative;
  text-align: center;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(3,3,5,0.4), var(--bg-color)), url('imgs/intro.jpg');
  background-size: cover;
  background-position: center;
  z-index: -1;
  filter: brightness(0.6) contrast(1.1);
}

.hero-content {
  max-width: 900px;
  padding: 80px 40px;
  border-radius: 40px;
}

h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 8vw, 6rem);
  line-height: 1.1;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: 40px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── GLASSMORPHISM ── */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.6);
}

/* ── BUTTONS ── */
.btn-primary {
  padding: 16px 40px;
  background: linear-gradient(135deg, var(--accent-cyan), #00bfff);
  color: #000;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  border-radius: 99px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  box-shadow: 0 0 20px var(--accent-cyan-glow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 40px var(--accent-cyan-glow);
}

.btn-secondary {
  padding: 16px 40px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  border-radius: 99px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-secondary:hover {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
  background: rgba(245, 208, 97, 0.05);
}

/* ── SECTION STYLES ── */
.content-section {
  padding: var(--section-padding-v) var(--section-padding-h);
  max-width: 1400px;
  margin: 0 auto;
}

.section-title {
  font-size: var(--title-size);
  margin-bottom: 60px;
  text-align: center;
  font-weight: 800;
}

.phi-gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-gold), #ff00ff);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shine 8s linear infinite;
}

@keyframes shine {
  to { background-position: 200% center; }
}

/* ── GRID & CARDS ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  padding: var(--card-padding);
  border-radius: 25px;
  transition: transform 0.4s ease;
}

.card:hover {
  transform: translateY(-10px);
}

.card h3 {
  font-size: 1.8rem;
  margin-bottom: 15px;
  color: var(--text-primary);
}

.card p {
  color: var(--text-secondary);
  line-height: 1.8;
}

.gold-border {
  border-color: rgba(245, 208, 97, 0.2);
}

.gold-text {
  color: var(--accent-gold) !important;
}

/* ── ARCANA CAROUSEL (THREE.JS) ── */
#arcana {
  padding: 100px 0;
  background: radial-gradient(circle at center, rgba(0, 229, 255, 0.05) 0%, transparent 70%);
}

.carousel-container {
  margin-bottom: 120px;
  position: relative;
  overflow: hidden;
}

.carousel-label {
  text-align: center;
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: 10px;
  opacity: 0.8;
}

.carousel-label.cyan { color: var(--accent-cyan); }
.carousel-label.gold { color: var(--accent-gold); }

.carousel-hint {
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

#desktop-carousel {
  height: 500px;
}

#desktop-carousel .carousel-item {
  width: 750px;
  aspect-ratio: 16/9;
}

#mobile-carousel {
  height: 680px; /* Another 5% shorter than 720px */
}

#mobile-carousel .carousel-item {
  width: 310px; 
  aspect-ratio: 9/19.5;
}

.three-container {
  width: 100%;
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 40px 0;
  scrollbar-width: none; /* Hide scrollbar */
  -ms-overflow-style: none;
  cursor: grab;
}

.three-container::-webkit-scrollbar {
  display: none;
}

.carousel-track {
  display: flex;
  padding: 0 40vw; /* Center items */
  gap: 50px;
  align-items: center;
}

.carousel-item {
  flex-shrink: 0;
  scroll-snap-align: center;
  scroll-snap-stop: always;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  opacity: 0.4;
  transform: scale(0.85);
  filter: grayscale(100%) brightness(0.5);
}

.carousel-item.active {
  opacity: 1;
  transform: scale(1.05);
  filter: grayscale(0%) brightness(1.1);
  box-shadow: 0 0 40px var(--accent-cyan-glow);
}

.carousel-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

@media (max-width: 768px) {
  #desktop-carousel .carousel-item { width: 85vw; }
  #mobile-carousel { height: 760px; } /* Another 5% shorter than 800px */
  #mobile-carousel .carousel-item { width: 65vw; }
  .carousel-track { padding: 0 10vw; }
}

.three-container:active {
  cursor: grabbing;
}

.active-title {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 800;
  margin-top: 20px;
  text-transform: uppercase;
  letter-spacing: 2px;
  height: 30px;
}

.active-title.cyan { color: var(--accent-cyan); }
.active-title.gold { color: var(--accent-gold); }

/* ── MATRIX SECTION ── */
.matrix-section {
  padding: var(--section-padding-v) 20px;
  display: flex;
  justify-content: center;
}

.matrix-content {
  max-width: 1000px;
  padding: 60px;
  border-radius: 40px;
  position: relative;
}

.matrix-icon {
  position: absolute;
  top: 20px;
  right: 40px;
  font-size: 4rem;
  opacity: 0.1;
}

.feature-list {
  list-style: none;
  margin-top: 30px;
  display: grid;
  gap: 20px;
}

.feature-list li {
  color: var(--text-secondary);
  padding-left: 25px;
  position: relative;
}

.feature-list li::before {
  content: '◈';
  position: absolute;
  left: 0;
  color: var(--accent-cyan);
}

/* ── NEXUS BOX ── */
.nexus-box {
  max-width: 900px;
  margin: 100px auto;
  padding: 80px 40px;
  border-radius: 40px;
  text-align: center;
  background: radial-gradient(circle at center, rgba(0, 229, 255, 0.1) 0%, transparent 70%), var(--glass-bg);
}

.download-actions {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin: 40px 0;
}

.btn-primary.big, .btn-secondary.big {
  padding: 20px 50px;
  font-size: 1.2rem;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  margin-top: 60px;
  opacity: 0.8;
}

.spec-item {
  border: 1px solid rgba(255,255,255,0.1);
  padding: 15px;
  border-radius: 15px;
}

.spec-item span {
  display: block;
  font-size: 0.7rem;
  color: var(--accent-cyan);
  text-transform: uppercase;
  margin-bottom: 5px;
}

/* ── FOOTER ── */
footer {
  padding: 80px 20px;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.engineered-by {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 20px;
}

.engineered-by img {
  width: 32px;
  filter: grayscale(1) brightness(0.7);
  transition: 0.3s;
}

.engineered-by img:hover {
  filter: none;
}

.copyright {
  font-size: 0.9rem;
  opacity: 0.5;
}

.privacy-link {
  display: inline-block;
  margin-top: 15px;
  color: var(--accent-cyan);
  text-decoration: none;
  font-size: 0.8rem;
}

/* UTILS */
.desktop-only { display: flex; }
.mobile-only { display: none; }

@media (max-width: 768px) {
  .desktop-only { display: none; }
  .mobile-only { display: block; }
  
  .download-actions {
    flex-direction: column;
  }
}