/* CORE VARIABLES & RESET */
:root {
  --bg-dark: #0b0b0f;
  --bg-card: #131318;
  --bg-elevated: #1a1a24;
  --accent-primary: #a855f7;
  --accent-secondary: #ec4899;
  --accent-tertiary: #06b6d4;
  --mining-primary: #f97316;
  --mining-secondary: #14b8a6;
  --mining-bg: #0f0a0a;
  --text-main: #fafafa;
  --text-muted: #a1a1aa;
  --border: #27272a;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  overflow-x: hidden;
  line-height: 1.6;
  padding-top: 100px;
  transition: background-color 0.4s ease;
}
a { text-decoration: none; color: inherit; transition: all 0.3s ease; }

/* BRAND SWITCHER */
.brand-switcher {
  position: fixed; top: 0; left: 0; width: 100%; height: 40px;
  background: #050505; border-bottom: 1px solid var(--border);
  display: flex; justify-content: center; align-items: center;
  gap: 2rem; z-index: 101; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.05em;
}
.brand-link {
  color: var(--text-muted); padding: 0 1rem; height: 100%;
  display: flex; align-items: center; gap: 0.5rem; cursor: pointer; position: relative;
}
.brand-link:hover, .brand-link.active { color: var(--text-main); background: #111; }
.brand-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; }
.brand-link.ai-link.active::after { background: var(--accent-primary); }
.brand-link.mining-link.active::after { background: var(--mining-primary); }

/* MAIN NAV */
nav {
  position: fixed; top: 40px; left: 0; width: 100%; height: 60px; padding: 0 5%;
  background: rgba(11, 11, 15, 0.85); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border); z-index: 100;
  display: flex; justify-content: space-between; align-items: center;
}
.logo { font-family: 'Space Grotesk', sans-serif; font-weight: 700; font-size: 1.5rem; display: flex; align-items: center; gap: 0.5rem; }
.logo-subtitle { font-weight:400; font-size:1rem; color:var(--text-muted); }
.logo-ai { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.logo-mining { background: linear-gradient(135deg, var(--mining-primary), var(--mining-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { font-weight: 500; font-size: 0.95rem; color: var(--text-muted); }
.nav-links a:hover { color: var(--text-main); }
.btn-nav { padding: 0.6rem 1.2rem; border-radius: 8px; color: white !important; font-weight: 600; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.btn-nav:hover { transform: translateY(-2px); }
.btn-ai { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); }
.btn-mining { background: linear-gradient(135deg, var(--mining-primary), var(--mining-secondary)); }
.hidden { display: none !important; }

/* LAYOUT & SECTIONS */
.view-section { display: none; animation: fadeIn 0.4s ease; }
.view-section.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.hero-split { display: grid; grid-template-columns: 1fr 1fr; min-height: calc(100vh - 100px); position: relative; overflow: hidden; }
.hero-split::before { content: ''; position: absolute; width: 600px; height: 600px; top: 50%; left: 50%; transform: translate(-50%, -50%); z-index: -1; pointer-events: none; }
.hero-ai-bg::before { background: radial-gradient(circle, rgba(168, 85, 247, 0.12), transparent 70%); }
.hero-mining-bg::before { background: radial-gradient(circle, rgba(249, 115, 22, 0.08), transparent 70%); }

.hero-content { padding: 4rem 5% 4rem 8%; display: flex; flex-direction: column; justify-content: center; z-index: 2; }
.hero-visual { position: relative; display: flex; align-items: center; justify-content: center; perspective: 1000px; padding-right: 5%; }

.badge { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.5rem 1rem; border-radius: 50px; font-size: 0.85rem; font-weight: 600; width: fit-content; margin-bottom: 1.5rem; }
.badge-ai { background: rgba(168, 85, 247, 0.1); border: 1px solid rgba(168, 85, 247, 0.3); color: var(--accent-primary); }
.badge-mining { background: rgba(249, 115, 22, 0.1); border: 1px solid rgba(249, 115, 22, 0.3); color: var(--mining-primary); }

.hero-title { font-family: 'Space Grotesk', sans-serif; font-size: 3.5rem; line-height: 1.1; margin-bottom: 1.5rem; font-weight: 800; background: linear-gradient(to right, #fff, #d1d5db); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.span-ai { background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.span-mining { background: linear-gradient(135deg, var(--mining-primary), var(--mining-secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-desc { font-size: 1.1rem; color: var(--text-muted); max-width: 500px; margin-bottom: 2.5rem; }

.hero-stats { display: flex; gap: 2.5rem; margin-bottom: 2.5rem; border-top: 1px solid var(--border); padding-top: 1.5rem; }
.stat h3 { font-family: 'Space Grotesk'; font-size: 2rem; color: var(--text-main); }
.stat p { font-size: 0.85rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }

.hero-btns { display: flex; gap: 1rem; }
.btn-primary { padding: 1rem 2rem; border-radius: 12px; background: var(--text-main); color: var(--bg-dark); font-weight: 700; font-family: 'Space Grotesk'; display: flex; align-items: center; gap: 0.5rem; }
.btn-secondary { padding: 1rem 2rem; border-radius: 12px; background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text-main); font-weight: 600; display: flex; align-items: center; gap: 0.5rem; }

/* AI CARDS */
.card-stack { position: relative; width: 400px; height: 500px; transform-style: preserve-3d; }
.art-card { position: absolute; width: 100%; height: 100%; border-radius: 24px; background-size: cover; background-position: center; box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5); transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1); border: 1px solid rgba(255,255,255,0.1); display: flex; align-items: flex-end; padding: 1.5rem; overflow: hidden; }
.art-card::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.8), transparent 60%); }
.card-info { position: relative; z-index: 2; opacity: 0; transform: translateY(20px); transition: 0.4s 0.2s; }
.card-active { z-index: 3; transform: translateX(0) scale(1); box-shadow: 0 0 40px rgba(168, 85, 247, 0.2); }
.card-active .card-info { opacity: 1; transform: translateY(0); }
.card-next { z-index: 2; transform: translateX(40px) scale(0.9) rotateY(-10deg); opacity: 0.6; filter: brightness(0.5); }
.card-prev { z-index: 1; transform: translateX(80px) scale(0.8) rotateY(-20deg); opacity: 0.3; filter: brightness(0.3); }
.card-tag { background: rgba(255,255,255,0.2); backdrop-filter: blur(4px); padding: 4px 10px; border-radius: 4px; font-size: 0.7rem; font-weight: 600; margin-bottom: 8px; display: inline-block; }
.card-title { font-family: 'Space Grotesk'; font-size: 1.4rem; font-weight: 700; margin-bottom: 4px; }
.card-tool { font-size: 0.85rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }

/* TICKER */
.tool-ticker { background: var(--bg-elevated); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 1.5rem 0; overflow: hidden; white-space: nowrap; position: relative; }
.ticker-track { display: inline-block; animation: scroll 30s linear infinite; }
.tool-item { display: inline-flex; align-items: center; gap: 0.5rem; margin: 0 2rem; color: var(--text-muted); font-weight: 600; font-size: 1.1rem; }
.tool-item span { width: 8px; height: 8px; background: var(--accent-tertiary); border-radius: 50%; display: inline-block; }
@keyframes scroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* GRIDS & CARDS */
.features, .mining-grid, .video-section, .vlog-section { padding: 5rem 5%; max-width: 1400px; margin: 0 auto; }
.section-header { margin-bottom: 3rem; display: flex; justify-content: space-between; align-items: end; }
.section-title { font-family: 'Space Grotesk'; font-size: 2.5rem; font-weight: 700; }
.link-ai { color: var(--accent-primary); font-weight: 600; }
.grid-3, .mining-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 2rem; }

/* Crypto Mining Cards */
.project-card, .vlog-card { background: #1a1510; border: 1px solid #332215; border-radius: 16px; overflow: hidden; transition: 0.3s; position: relative; }
.project-card:hover { transform: translateY(-5px); border-color: var(--mining-primary); }
.project-thumb { height: 200px; background: #222; position: relative; overflow: hidden; }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; opacity: 0.8; }
.project-meta { padding: 1.5rem; }
.project-tag { color: var(--mining-secondary); font-size: 0.75rem; font-weight: 700; text-transform: uppercase; margin-bottom: 0.5rem; display: block; }
.project-title { font-family: 'Space Grotesk'; font-size: 1.25rem; font-weight: 700; margin-bottom: 0.5rem; }
.project-stats { display: flex; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid #332215; font-size: 0.8rem; color: var(--text-muted); }

/* Video Cards */
.vlog-card { display: flex; align-items: center; gap: 1rem; padding: 1rem; border-radius: 12px; }
.vlog-card .v-thumb { width: 100px; height: 70px; border-radius: 8px; background-size: cover; }

.text-muted { color: var(--text-muted); }
.small-text { font-size: 0.9rem; }

/* Mobile */
@media (max-width: 1024px) {
  .hero-split { grid-template-columns: 1fr; padding-top: 4rem; }
  .hero-visual { height: 400px; padding: 0; }
  .hero-content { text-align: center; align-items: center; }
  .hero-stats { justify-content: center; }
}
@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .nav-links { display: none; }
}