style.css

/* AEUPH Model Hub - Modern Design System */

:root {
  /* Core Colors */
  --bg-deep: #030308;
  --bg-base: #070712;
  --bg-elevated: #0c0c1a;
  --bg-card: #0f0f1e;
  --bg-card-hover: #141428;
  
  /* Brand Colors */
  --purple: #9b59f7;
  --purple-bright: #b87aff;
  --purple-dim: #7a3de8;
  --cyan: #00e5ff;
  --cyan-dim: #00b8cc;
  --pink: #ff3399;
  --pink-dim: #cc2a7a;
  --gold: #ffd700;
  --gold-dim: #ccac00;
  --green: #00ff88;
  --green-dim: #00cc6e;
  
  /* RunPod Colors */
  --runpod-blue: #00d4ff;
  --runpod-purple: #7c3aed;
  --runpod-purple-dark: #5b21b6;
  
  /* Referral Colors */
  --ref-gold: #ffd700;
  --ref-gold-dim: #e6c200;
  --ref-emerald: #10b981;
  
  /* Text */
  --text-bright: #ffffff;
  --text-primary: #e8e8f0;
  --text-dim: #a0a0b8;
  --text-muted: #6a6a8a;
  --text-faint: #3a3a5a;
  
  /* Borders & Surfaces */
  --border-subtle: #1a1a2e;
  --border-default: #2a2a4a;
  --border-bright: #3a3a5a;
  --glass-bg: rgba(15, 15, 30, 0.7);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  --glass-blur: 24px;
  
  /* Gradients */
  --signal-gradient: linear-gradient(135deg, #9b59f7, #00e5ff, #ff3399);
  --signal-gradient-subtle: linear-gradient(135deg, rgba(155, 89, 247, 0.15), rgba(0, 229, 255, 0.1), rgba(255, 51, 153, 0.08));
  --gold-gradient: linear-gradient(135deg, #ffd700, #ffaa00);
  --cyan-gradient: linear-gradient(135deg, #00e5ff, #00b8ff);
  --purple-gradient: linear-gradient(135deg, #9b59f7, #7a3de8);
  --pink-gradient: linear-gradient(135deg, #ff3399, #ff0066);
  --hero-gradient: linear-gradient(135deg, #030308 0%, #0a0a1a 50%, #030308 100%);
  --card-gradient: linear-gradient(145deg, rgba(15,15,30,0.9) 0%, rgba(10,10,25,0.95) 100%);
  
  /* Spacing */
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* Shadows */
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(155, 89, 247, 0.2);
  --shadow-glow-cyan: 0 0 40px rgba(0, 229, 255, 0.15);
  --shadow-glow-gold: 0 0 40px rgba(255, 215, 0, 0.2);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-base: 250ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 400ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Z-index */
  --z-bg: 0;
  --z-content: 1;
  --z-nav: 100;
  --z-modal: 1000;
  --z-toast: 2000;
}

/* ========================================
   RESET & BASE
======================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

body {
  font-family: 'Space Grotesk', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
}

a { color: var(--cyan); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--gold); }
img { max-width: 100%; height: auto; display: block; }
::selection { background: var(--purple); color: var(--bg-deep); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-default); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--purple); }

/* ========================================
   TYPOGRAPHY
======================================== */
h1, h2, h3, h4, h5, h6 { 
  font-weight: 700; 
  line-height: 1.15; 
  color: var(--text-bright);
  letter-spacing: -0.02em;
}
h1 { font-size: clamp(2.5rem, 6vw, 5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
p { color: var(--text-dim); font-size: 1.05rem; }

.gradient-text {
  background: var(--signal-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gold-text { color: var(--gold); }
.cyan-text { color: var(--cyan); }
.purple-text { color: var(--purple); }

/* ========================================
   GLASS SYSTEM
======================================== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius);
}
.glass-strong { background: rgba(15, 15, 30, 0.85); border-color: rgba(255,255,255,0.1); }
.glass-hover { transition: all var(--transition-base); }
.glass-hover:hover { 
  background: rgba(20, 20, 40, 0.9);
  border-color: rgba(155, 89, 247, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(155,89,247,0.2) inset;
}

/* ========================================
   BACKGROUND EFFECTS
======================================== */
#starfield { position: fixed; inset: 0; pointer-events: none; z-index: var(--z-bg); opacity: 0.4; }
.star { position: absolute; background: #fff; border-radius: 50%; animation: star-drift var(--dur) ease-in-out infinite alternate; animation-delay: var(--delay); opacity: 0; }
@keyframes star-drift { 0% { transform: translate(0,0); opacity: 0 } 10% { opacity: var(--opacity,0.6) } 90% { opacity: var(--opacity,0.6) } 100% { transform: translate(var(--dx,40px),var(--dy,-30px)); opacity: 0 } }

.nebula-orb { position: fixed; border-radius: 50%; filter: blur(100px); pointer-events: none; z-index: var(--z-bg); animation: nebula-drift 30s ease-in-out infinite alternate; }
.nebula-orb:nth-child(1) { width: 700px; height: 700px; background: hsla(var(--hue, 280), 80%, 40%, 0.12); top: -15%; left: -10%; animation-duration: 35s; }
.nebula-orb:nth-child(2) { width: 550px; height: 550px; background: hsla(var(--hue, 190), 80%, 45%, 0.08); bottom: -10%; right: -10%; animation-duration: 40s; animation-delay: -8s; }
.nebula-orb:nth-child(3) { width: 450px; height: 450px; background: hsla(var(--hue, 330), 70%, 50%, 0.08); top: 35%; left: 55%; animation-duration: 30s; animation-delay: -15s; }
@keyframes nebula-drift { 0% { transform: translate(0,0) scale(1) } 33% { transform: translate(40px,-30px) scale(1.08) } 66% { transform: translate(-30px,40px) scale(0.95) } 100% { transform: translate(20px,-20px) scale(1.03) } }

.hero-grid { position: absolute; inset: 0; background-image: 
  linear-gradient(rgba(155,89,247,0.02) 1px, transparent 1px),
  linear-gradient(90deg, rgba(155,89,247,0.02) 1px, transparent 1px);
  background-size: 60px 60px; animation: grid-drift 60s linear infinite; pointer-events: none; }
@keyframes grid-drift { 0% { transform: translate(0,0) } 100% { transform: translate(60px,60px) } }

#scroll-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--signal-gradient); z-index: var(--z-nav); transform-origin: left; transform: scaleX(0); transition: transform 100ms linear; }

/* ========================================
   NAVBAR
======================================== */
#navbar { position: fixed; top: 0; left: 0; right: 0; z-index: var(--z-nav); background: rgba(3,3,8,0.85); backdrop-filter: blur(24px) saturate(1.5); border-bottom: 1px solid var(--border-subtle); transition: all var(--transition-base); }
#navbar.scrolled { background: rgba(3,3,8,0.95); border-bottom-color: var(--border-default); box-shadow: var(--shadow-md); }
.nav-inner { max-width: 1400px; margin: 0 auto; padding: 0 28px; display: flex; align-items: center; height: 72px; gap: 40px; }
.nav-logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; color: var(--text-bright); letter-spacing: -0.03em; }
.logo-icon { font-size: 1.5rem; background: var(--signal-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-links { display: flex; gap: 36px; flex: 1; }
.nav-links a { color: var(--text-dim); font-size: 0.9rem; font-weight: 500; letter-spacing: 0.02em; transition: all var(--transition-fast); position: relative; padding: 6px 0; }
.nav-links a::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px; background: var(--signal-gradient); transition: width var(--transition-base); border-radius: 2px; }
.nav-links a:hover { color: var(--text-bright); }
.nav-links a:hover::after { width: 100%; }
.nav-cta { background: var(--glass-bg); backdrop-filter: blur(12px); color: var(--text-bright); padding: 10px 26px; border-radius: var(--radius-sm); font-size: 0.88rem; font-weight: 600; border: 1px solid var(--glass-border); letter-spacing: 0.02em; white-space: nowrap; transition: all var(--transition-fast); }
.nav-cta:hover { background: rgba(155,89,247,0.2); border-color: rgba(155,89,247,0.4); box-shadow: 0 0 30px rgba(155,89,247,0.2); transform: translateY(-2px); }
.nav-toggle { display: none; background: none; border: none; color: var(--text-bright); font-size: 1.75rem; cursor: pointer; }

/* ========================================
   BUTTONS
======================================== */
.btn-primary, .btn-secondary { padding: 16px 36px; border-radius: var(--radius-sm); font-weight: 700; font-size: 1rem; transition: all var(--transition-base); display: inline-flex; align-items: center; gap: 10px; cursor: pointer; border: none; position: relative; overflow: hidden; }
.btn-primary { background: var(--signal-gradient); color: var(--bg-deep); box-shadow: 0 6px 30px rgba(155,89,247,0.35); }
.btn-primary::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--cyan), var(--pink)); opacity: 0; transition: opacity var(--transition-base); }
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(155,89,247,0.5); }
.btn-primary span, .btn-secondary span { position: relative; z-index: 1; }
.btn-secondary { background: var(--glass-bg); color: var(--text-primary); border: 1px solid var(--glass-border); backdrop-filter: blur(12px); }
.btn-secondary:hover { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); transform: translateY(-3px); }

.btn-ref { background: linear-gradient(135deg, var(--gold), #f59e0b); color: #030308; box-shadow: 0 6px 30px rgba(255,215,0,0.4); }
.btn-ref::before { background: linear-gradient(135deg, #f59e0b, var(--gold)); }
.btn-ref:hover { box-shadow: 0 12px 40px rgba(255,215,0,0.5); transform: translateY(-3px) scale(1.02); }
.btn-runpod { background: linear-gradient(135deg, var(--runpod-blue), var(--runpod-purple)); color: #fff; box-shadow: 0 6px 30px rgba(0,212,255,0.35); }
.btn-runpod::before { background: linear-gradient(135deg, var(--runpod-purple), var(--runpod-blue)); }
.btn-runpod:hover { box-shadow: 0 12px 40px rgba(0,212,255,0.4); transform: translateY(-3px); }

/* ========================================
   HERO
======================================== */
#hero { min-height: 100vh; display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; padding: 140px 28px 100px; z-index: var(--z-content); }
.hero-floating { position: absolute; inset: 0; pointer-events: none; z-index: -1; }
.hero-orb { position: absolute; border-radius: 50%; background: radial-gradient(circle at 30% 30%, hsla(var(--hue, 280), 80%, 45%, 0.18), transparent 65%); filter: blur(60px); animation: hero-orb-float 25s ease-in-out infinite alternate; }
.hero-orb:nth-child(1) { width: 600px; height: 600px; top: -8%; left: -5%; animation-duration: 28s; }
.hero-orb:nth-child(2) { width: 480px; height: 480px; bottom: -5%; right: -5%; --hue: 190; animation-duration: 22s; animation-delay: -7s; }
.hero-orb:nth-child(3) { width: 350px; height: 350px; top: 25%; left: 65%; --hue: 330; animation-duration: 32s; animation-delay: -14s; }
@keyframes hero-orb-float { 0% { transform: translate(0,0) scale(1) } 50% { transform: translate(30px,-40px) scale(1.1) } 100% { transform: translate(-20px,30px) scale(0.95) } }

.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(155,89,247,0.015) 1px, transparent 1px), linear-gradient(90deg, rgba(155,89,247,0.015) 1px, transparent 1px); background-size: 80px 80px; animation: grid-drift 80s linear infinite; pointer-events: none; opacity: 0.5; }
@keyframes grid-drift { 0% { transform: translate(0,0) } 100% { transform: translate(80px,80px) } }

.hero-content { text-align: center; position: relative; z-index: 2; max-width: 960px; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; padding: 10px 24px; border-radius: 999px; background: rgba(155,89,247,0.12); border: 1px solid rgba(155,89,247,0.25); color: var(--cyan); font-size: 0.8rem; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 32px; backdrop-filter: blur(8px); }
.hero-badge.ref-badge { background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(245,158,11,0.12)); border-color: rgba(255,215,0,0.35); color: var(--gold); }
.hero-badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); animation: pulse-dot 2s ease-in-out infinite; }
@keyframes pulse-dot { 0%,100% { opacity: 1; transform: scale(1) } 50% { opacity: 0.6; transform: scale(0.85) } }

.hero-line { display: block; opacity: 0; transform: translateY(40px); animation: hero-word-in 1s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
.hero-line:nth-child(1) { animation-delay: 0.15s; }
.hero-line:nth-child(2) { animation-delay: 0.4s; }
.hero-line:nth-child(3) { animation-delay: 0.65s; font-size: clamp(2.5rem, 7vw, 5.5rem); }
@keyframes hero-word-in { to { opacity: 1; transform: translateY(0) } }

.hero-content h1 { font-size: clamp(2.5rem, 7vw, 6rem); font-weight: 800; line-height: 1.05; margin-bottom: 32px; letter-spacing: -0.03em; }
.hero-sub { font-size: clamp(1.05rem, 2vw, 1.25rem); color: var(--text-dim); margin-bottom: 48px; line-height: 1.85; max-width: 720px; margin-left: auto; margin-right: auto; opacity: 0; animation: hero-word-in 1s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards; }
.hero-actions { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 72px; opacity: 0; animation: hero-word-in 1s cubic-bezier(0.16, 1, 0.3, 1) 1.15s forwards; }
.btn-sm { padding: 12px 24px; font-size: 0.9rem; border-radius: var(--radius-sm); }

.hero-stats { display: flex; gap: 40px; justify-content: center; flex-wrap: wrap; opacity: 0; animation: hero-word-in 1s cubic-bezier(0.16, 1, 0.3, 1) 1.4s forwards; }
.hero-stat { text-align: center; padding: 20px 32px; border-radius: var(--radius); background: var(--glass-bg); backdrop-filter: blur(12px); border: 1px solid var(--glass-border); min-width: 140px; transition: all var(--transition-base); }
.hero-stat:hover { background: rgba(20,20,40,0.9); border-color: rgba(155,89,247,0.2); transform: translateY(-4px); }
.hero-stat-num { display: block; font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 800; background: var(--signal-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: 8px; }
.hero-stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; display: block; }

/* ========================================
   SIGNAL BAR
======================================== */
.signal-bar-wrap { position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: var(--z-nav); background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: 999px; padding: 10px 32px; display: flex; align-items: center; gap: 16px; min-width: 260px; box-shadow: var(--shadow-lg); }
.signal-bar-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; white-space: nowrap; }
.signal-bar-track { flex: 1; height: 8px; background: var(--bg-card); border-radius: 4px; overflow: hidden; position: relative; }
.signal-bar-track::before { content: ''; position: absolute; inset: 0; background: repeating-linear-gradient(45deg, transparent, transparent 8px, rgba(255,255,255,0.03) 8px, rgba(255,255,255,0.03) 16px); animation: track-shimmer 3s linear infinite; }
@keyframes track-shimmer { 0% { background-position: 0 0 } 100% { background-position: 32px 0 } }
.signal-bar-fill { height: 100%; background: var(--signal-gradient); border-radius: 4px; transition: width 200ms linear; width: 0%; position: relative; z-index: 1; box-shadow: 0 0 20px var(--purple); }
.signal-bar-pct { font-size: 0.85rem; color: var(--cyan); font-weight: 800; min-width: 50px; text-align: right; }

/* ========================================
   SECTIONS
======================================== */
section { padding: 120px 28px; position: relative; z-index: var(--z-content); }
.section-header { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section-header h2 { font-size: clamp(2rem, 4.5vw, 3.25rem); font-weight: 800; margin-bottom: 16px; letter-spacing: -0.02em; }
.section-header p { color: var(--text-dim); font-size: 1.1rem; line-height: 1.8; max-width: 560px; margin: 0 auto; }
.section-divider { height: 2px; max-width: 100px; margin: 0 auto 64px; background: var(--signal-gradient); border-radius: 2px; opacity: 0.6; }

/* ========================================
   STATS BAR
======================================== */
.stats-bar { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 20px; margin-bottom: 56px; }
.stat-card { text-align: center; padding: 28px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius); border: 1px solid var(--glass-border); transition: all var(--transition-base); }
.stat-card:hover { border-color: rgba(155,89,247,0.3); transform: translateY(-4px); }
.stat-number { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; background: var(--signal-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: 8px; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1.5px; }

/* ========================================
   MODEL CARDS
======================================== */
.models-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); gap: 24px; }
.model-card { background: var(--card-gradient); backdrop-filter: blur(20px); border: 1px solid var(--border-subtle); border-radius: var(--radius); padding: 32px; transition: all 500ms cubic-bezier(0.23, 1, 0.32, 1); position: relative; overflow: hidden; cursor: pointer; }
.model-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--signal-gradient); opacity: 0; transition: opacity var(--transition-base); }
.model-card:hover { transform: translateY(-8px); background: var(--bg-card-hover); border-color: rgba(155,89,247,0.3); box-shadow: 0 24px 60px rgba(0,0,0,0.6), 0 0 0 1px rgba(155,89,247,0.15); }
.model-card:hover::before { opacity: 1; }
.model-card.featured { border-color: rgba(255,215,0,0.4); background: linear-gradient(145deg, rgba(255,215,0,0.05), rgba(15,15,30,0.95)); }
.model-card.featured::before { background: linear-gradient(90deg, var(--gold), #ffaa00); opacity: 1; }

.model-header { display: flex; align-items: flex-start; gap: 18px; margin-bottom: 20px; }
.model-avatar { width: 64px; height: 64px; border-radius: 16px; background: var(--card-gradient); border: 1px solid var(--border-subtle); display: flex; align-items: center; justify-content: center; font-size: 1.75rem; flex-shrink: 0; }
.model-info { flex: 1; min-width: 0; }
.model-name { font-size: 1.15rem; font-weight: 700; margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.model-org { font-size: 0.85rem; color: var(--text-dim); }
.model-org .hf-logo { color: var(--gold); font-weight: 900; }

.model-meta { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.model-tag { display: inline-flex; align-items: center; gap: 8px; padding: 5px 14px; border-radius: 999px; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; }
.model-tag.llm { background: rgba(155,89,247,0.15); color: var(--purple); border: 1px solid rgba(155,89,247,0.25); }
.model-tag.code { background: rgba(0,229,255,0.12); color: var(--cyan); border: 1px solid rgba(0,229,255,0.2); }
.model-tag.vision { background: rgba(0,255,136,0.12); color: var(--green); border: 1px solid rgba(0,255,136,0.2); }
.model-tag.audio { background: rgba(255,51,153,0.12); color: var(--pink); border: 1px solid rgba(255,51,153,0.2); }
.model-tag.embed { background: rgba(0,229,255,0.12); color: var(--cyan); border: 1px solid rgba(0,229,255,0.2); }
.gpu-badge { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border-radius: 999px; font-size: 0.75rem; font-weight: 600; background: rgba(255,215,0,0.12); color: var(--gold); border: 1px solid rgba(255,215,0,0.2); }

.model-desc { color: var(--text-dim); font-size: 0.95rem; line-height: 1.7; margin-bottom: 24px; }

.model-footer { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; padding-top: 20px; border-top: 1px solid var(--border-subtle); }
.model-stats { display: flex; gap: 20px; font-size: 0.8rem; color: var(--text-muted); }
.model-stat { display: flex; align-items: center; gap: 6px; }

.deploy-btn { background: var(--signal-gradient); color: #030308; box-shadow: 0 6px 24px rgba(155,89,247,0.35); position: relative; overflow: hidden; font-weight: 700; font-size: 0.9rem; padding: 12px 24px; }
.deploy-btn::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--cyan), var(--pink)); opacity: 0; transition: opacity var(--transition-base); }
.deploy-btn:hover::before { opacity: 1; }
.deploy-btn:hover { transform: translateY(-3px); box-shadow: 0 12px 36px rgba(155,89,247,0.5); }

/* ========================================
   FILTER TABS
======================================== */
.filter-tabs { display: flex; gap: 10px; margin-bottom: 36px; flex-wrap: wrap; justify-content: center; }
.filter-tab { padding: 10px 22px; border-radius: 999px; border: 1px solid var(--border-subtle); background: var(--glass-bg); backdrop-filter: blur(16px); color: var(--text-dim); font-size: 0.82rem; font-weight: 600; cursor: pointer; transition: all var(--transition-fast); white-space: nowrap; }
.filter-tab:hover { color: var(--text-bright); border-color: rgba(155,89,247,0.4); }
.filter-tab.active { background: rgba(155,89,247,0.2); color: #fff; border-color: rgba(155,89,247,0.5); box-shadow: 0 0 24px rgba(155,89,247,0.15); }

/* ========================================
   SEARCH BAR
======================================== */
.search-bar { max-width: 640px; margin: 0 auto 40px; position: relative; }
.search-input { width: 100%; padding: 16px 24px 16px 60px; border-radius: var(--radius); border: 1px solid var(--border-default); background: var(--glass-bg); backdrop-filter: blur(16px); color: var(--text-primary); font-size: 1rem; transition: all var(--transition-base); }
.search-input:focus { outline: none; border-color: rgba(155,89,247,0.5); box-shadow: 0 0 0 4px rgba(155,89,247,0.12); }
.search-input::placeholder { color: var(--text-muted); }
.search-icon { position: absolute; left: 22px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: 1.2rem; pointer-events: none; }

/* ========================================
   GPU CARDS
======================================== */
.dimensions-grid { max-width: 1300px; margin: 0 auto; display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
.dimension-card { padding: 40px 32px; border-radius: var(--radius-lg); text-align: center; position: relative; overflow: hidden; background: var(--card-gradient); backdrop-filter: blur(20px); border: 1px solid var(--border-subtle); transition: all 500ms cubic-bezier(0.23, 1, 0.32, 1); }
.dimension-card:hover { background: var(--bg-card-hover); transform: translateY(-8px); }
.dimension-card.dim-nexus:hover { border-color: rgba(155,89,247,0.4); box-shadow: 0 24px 60px rgba(155,89,247,0.15); }
.dimension-card.dim-prism:hover { border-color: rgba(0,229,255,0.4); box-shadow: 0 24px 60px rgba(0,229,255,0.12); }
.dimension-card.dim-echo:hover { border-color: rgba(255,51,153,0.4); box-shadow: 0 24px 60px rgba(255,51,153,0.12); }
.dimension-card.dim-spectra:hover { border-color: rgba(0,255,136,0.4); box-shadow: 0 24px 60px rgba(0,255,136,0.12); }
.dim-icon { font-size: 2.5rem; margin-bottom: 20px; display: block; }
.dimension-card h3 { font-size: 1.35rem; margin-bottom: 10px; }
.dimension-card p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.75; margin-bottom: 24px; }
.dim-cta { color: var(--cyan); font-size: 0.88rem; font-weight: 600; letter-spacing: 0.5px; transition: gap var(--transition-fast); display: inline-flex; align-items: center; gap: 8px; }
.dim-cta:hover { gap: 14px; }

.deploy-btn { background: var(--signal-gradient); color: #030308; box-shadow: 0 6px 24px rgba(155,89,247,0.35); position: relative; overflow: hidden; font-weight: 700; font-size: 0.95rem; padding: 14px 28px; }
.deploy-btn::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--cyan), var(--pink)); opacity: 0; transition: opacity var(--transition-base); }
.deploy-btn:hover::before { opacity: 1; }
.deploy-btn:hover { transform: translateY(-4px); box-shadow: 0 16px 40px rgba(155,89,247,0.5); }

/* ========================================
   REF PROMO SECTIONS
======================================== */
.ref-promo-section { position: relative; padding: 120px 28px; overflow: hidden; }
.ref-promo-section::before { content: ''; position: absolute; inset: 0; pointer-events: none; z-index: 0; background: radial-gradient(ellipse at 20% 20%, rgba(255,215,0,0.08) 0%, transparent 55%), radial-gradient(ellipse at 80% 80%, rgba(0,212,255,0.06) 0%, transparent 55%), linear-gradient(180deg, transparent 0%, var(--bg-elevated) 50%, transparent 100%); }
.ref-promo-section.ref-alt::before { background: radial-gradient(ellipse at 80% 20%, rgba(0,212,255,0.08) 0%, transparent 55%), radial-gradient(ellipse at 20% 80%, rgba(255,215,0,0.06) 0%, transparent 55%), linear-gradient(180deg, transparent 0%, var(--bg-elevated) 50%, transparent 100%); }
.ref-promo-container { position: relative; z-index: 1; max-width: 1300px; margin: 0 auto; }

.ref-hero-banner { background: linear-gradient(135deg, rgba(255,215,0,0.1), rgba(0,212,255,0.08)); border: 1px solid rgba(255,215,0,0.2); border-radius: var(--radius-xl); padding: 72px 48px; text-align: center; position: relative; overflow: hidden; }
.ref-hero-banner::before { content: ''; position: absolute; top: -60%; left: -60%; width: 220%; height: 220%; background: conic-gradient(from 0deg, transparent, rgba(255,215,0,0.04), transparent 35%); animation: rotate-bg 25s linear infinite; }
@keyframes rotate-bg { to { transform: rotate(360deg); } }
.ref-hero-banner > * { position: relative; z-index: 1; }

.ref-badge { display: inline-flex; align-items: center; gap: 10px; padding: 12px 28px; border-radius: 999px; background: linear-gradient(135deg, var(--gold), #f59e0b); color: #030308; font-weight: 800; font-size: 0.85rem; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 28px; box-shadow: 0 6px 28px rgba(255,215,0,0.35); animation: pulse-gold 2.5s ease-in-out infinite; }
@keyframes pulse-gold { 0%,100% { box-shadow: 0 6px 28px rgba(255,215,0,0.35); } 50% { box-shadow: 0 8px 40px rgba(255,215,0,0.5), 0 0 50px rgba(255,215,0,0.25); } }

.ref-hero-banner h2 { font-size: clamp(2.25rem, 5.5vw, 3.5rem); font-weight: 800; line-height: 1.1; margin-bottom: 20px; background: linear-gradient(135deg, #fff, var(--gold), var(--cyan)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.ref-subtitle { font-size: 1.2rem; color: var(--text-dim); max-width: 780px; margin: 0 auto 40px; line-height: 1.85; }

.ref-cta-row { display: flex; gap: 20px; justify-content: center; flex-wrap: wrap; margin-bottom: 48px; }
.ref-cta-row .btn { padding: 18px 44px; font-size: 1.1rem; font-weight: 700; }

.ref-stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 28px; margin-top: 48px; padding-top: 48px; border-top: 1px solid rgba(255,215,0,0.18); }
.ref-stat { text-align: center; padding: 24px; background: rgba(255,215,0,0.05); border: 1px solid rgba(255,215,0,0.12); border-radius: var(--radius); transition: all var(--transition-base); }
.ref-stat:hover { border-color: rgba(255,215,0,0.35); background: rgba(255,215,0,0.12); transform: translateY(-6px); }
.ref-stat-number { font-size: clamp(2.25rem, 4.5vw, 3rem); font-weight: 800; background: linear-gradient(135deg, var(--gold), #f59e0b); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1; margin-bottom: 8px; }
.ref-stat-label { font-size: 0.85rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1.5px; }

.ref-benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 24px; margin-top: 72px; }
.ref-benefit-card { background: var(--card-gradient); backdrop-filter: blur(20px); border: 1px solid var(--border-subtle); border-radius: var(--radius-lg); padding: 40px; transition: all 500ms cubic-bezier(0.23, 1, 0.32, 1); position: relative; overflow: hidden; }
.ref-benefit-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--gold), var(--cyan)); opacity: 0; transition: opacity var(--transition-base); }
.ref-benefit-card:hover { transform: translateY(-10px); border-color: rgba(255,215,0,0.4); box-shadow: 0 28px 70px rgba(255,215,0,0.1), var(--glass-shadow); }
.ref-benefit-card:hover::before { opacity: 1; }
.ref-benefit-icon { width: 64px; height: 64px; border-radius: 16px; display: flex; align-items: center; justify-content: center; font-size: 1.75rem; margin-bottom: 24px; background: linear-gradient(135deg, rgba(255,215,0,0.15), rgba(0,212,255,0.1)); border: 1px solid rgba(255,215,0,0.2); }
.ref-benefit-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 12px; color: var(--text-bright); }
.ref-benefit-card p { color: var(--text-dim); font-size: 0.95rem; line-height: 1.8; }

.ref-dashboard-section { background: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(155,89,247,0.08)); border: 1px solid rgba(0,212,255,0.18); border-radius: var(--radius-xl); padding: 60px 48px; text-align: center; margin-top: 48px; }
.ref-dashboard-section h3 { font-size: clamp(2rem, 4vw, 2.5rem); font-weight: 800; margin-bottom: 16px; background: linear-gradient(135deg, var(--cyan), var(--gold)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.ref-dashboard-section p { color: var(--text-dim); font-size: 1.05rem; max-width: 680px; margin: 0 auto 36px; line-height: 1.85; }

/* Earning Scenarios */
.earning-scenarios { margin-top: 56px; padding: 40px; background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); text-align: left; }
.earning-scenarios h4 { font-size: 1.1rem; font-weight: 700; margin-bottom: 24px; display: flex; align-items: center; gap: 12px; color: var(--gold); }
.earning-scenarios .scenario-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; }
.earning-scenarios .scenario-card { padding: 20px; background: rgba(255,215,0,0.05); border: 1px solid rgba(255,215,0,0.12); border-radius: 14px; }
.earning-scenarios .scenario-card .amount { font-size: 1.75rem; font-weight: 800; color: var(--gold); }
.earning-scenarios .scenario-card .desc { font-size: 0.85rem; color: var(--text-dim); margin-top: 6px; }
.earning-scenarios .scenario-card .note { font-size: 0.75rem; color: var(--text-muted); margin-top: 10px; }

/* ========================================
   FOOTER
======================================== */
footer { padding: 72px 28px; border-top: 1px solid var(--border-subtle); text-align: center; color: var(--text-muted); font-size: 0.88rem; }
footer p { margin-top: 10px; }
footer a { color: var(--cyan); transition: color var(--transition-fast); }
footer a:hover { color: var(--gold); }

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1024px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; background: rgba(3,3,8,0.98); backdrop-filter: blur(24px); flex-direction: column; padding: 28px; gap: 20px; border-bottom: 1px solid var(--border-subtle); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .ref-cta-row .btn { width: 100%; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  html { font-size: 14px; }
  .nav-inner { padding: 0 20px; height: 64px; }
  .hero-stats { gap: 24px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .models-grid { grid-template-columns: 1fr; }
  .dimensions-grid { grid-template-columns: 1fr; }
  .ref-cta-row .btn { width: 100%; justify-content: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .ref-stats-row { grid-template-columns: repeat(2, 1fr); }
  .ref-benefits-grid { grid-template-columns: 1fr; }
}

/* ========================================
   UTILITIES
======================================== */
.hidden { display: none !important; }
.inline-flex { display: inline-flex !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }