@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #1a1a26;
  --surface: rgba(255,255,255,0.04);
  --surface2: rgba(255,255,255,0.08);
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.15);
  --text: #e8e8f0;
  --text2: #8888aa;
  --accent: #7c6af7;
  --accent2: #a855f7;
  --gold: #f59e0b;
  --green: #10b981;
  --red: #ef4444;
  --cyan: #06b6d4;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-glow: 0 0 40px rgba(124,106,247,0.25);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:'Outfit',sans-serif;background:var(--bg);color:var(--text);min-height:100vh;overflow-x:hidden}
a{color:inherit;text-decoration:none}
ul{list-style:none}
img{max-width:100%}

/* BG */
.bg-canvas{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.bg-gradient-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.35}
.orb-1{width:600px;height:600px;background:radial-gradient(circle,#7c6af7,transparent);top:-200px;left:-200px;animation:orbFloat 15s ease-in-out infinite}
.orb-2{width:400px;height:400px;background:radial-gradient(circle,#a855f7,transparent);bottom:-100px;right:-100px;animation:orbFloat 20s ease-in-out infinite reverse}
.orb-3{width:300px;height:300px;background:radial-gradient(circle,#06b6d4,transparent);top:50%;left:50%;animation:orbFloat 25s ease-in-out infinite 5s}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}50%{transform:translate(30px,-30px) scale(1.1)}}
.chess-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.02) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.02) 1px,transparent 1px);background-size:40px 40px}

/* NAVBAR */
.navbar{position:fixed;top:0;left:0;right:0;z-index:100;padding:16px 0;transition:all .3s}
.navbar.scrolled{background:rgba(10,10,15,.85);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.nav-container{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;gap:32px}
.nav-logo{display:flex;align-items:center;gap:10px;font-size:1.4rem;font-weight:800}
.logo-icon{font-size:1.8rem}
.accent{color:var(--accent)}
.nav-links{display:flex;gap:28px;margin-left:auto}
.nav-links a{color:var(--text2);font-weight:500;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-actions{display:flex;gap:12px;align-items:center}
.nav-burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-burger span{display:block;width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:var(--radius-sm);font-family:'Outfit',sans-serif;font-weight:600;font-size:.9rem;cursor:pointer;transition:all .2s;border:none;white-space:nowrap}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#6b5ce7;transform:translateY(-1px)}
.btn-ghost{color:var(--text2);background:transparent}
.btn-ghost:hover{color:var(--text);background:var(--surface)}
.btn-hero{background:linear-gradient(135deg,var(--accent),var(--accent2));color:#fff;padding:14px 28px;font-size:1rem;border-radius:var(--radius);box-shadow:0 4px 20px rgba(124,106,247,.4)}
.btn-hero:hover{transform:translateY(-2px);box-shadow:0 8px 30px rgba(124,106,247,.5)}
.btn-hero-outline{border:2px solid var(--border2);color:var(--text);padding:14px 28px;font-size:1rem;border-radius:var(--radius);background:var(--surface)}
.btn-hero-outline:hover{border-color:var(--accent);transform:translateY(-2px)}
.btn-outline-full{border:2px solid var(--border2);color:var(--text);padding:14px;border-radius:var(--radius);background:transparent;text-align:center;display:block}
.btn-outline-full:hover{border-color:var(--accent);background:var(--surface)}
.avatar-sm{width:24px;height:24px;border-radius:50%;background:var(--accent2);display:inline-flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700}

/* HERO */
.hero{min-height:100vh;display:flex;align-items:center;padding:100px 24px 60px;max-width:1200px;margin:0 auto;gap:60px;position:relative;z-index:1}
.hero-content{flex:1}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(124,106,247,.15);border:1px solid rgba(124,106,247,.3);border-radius:100px;padding:6px 16px;font-size:.85rem;color:var(--accent);margin-bottom:28px}
.badge-dot{width:8px;height:8px;background:var(--green);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(16,185,129,.4)}50%{box-shadow:0 0 0 6px rgba(16,185,129,0)}}
.hero-title{font-size:clamp(2.5rem,5vw,4rem);font-weight:900;line-height:1.1;margin-bottom:20px}
.gradient-text{background:linear-gradient(135deg,var(--accent),var(--cyan));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-subtitle{font-size:1.1rem;color:var(--text2);line-height:1.7;max-width:480px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px}
.hero-stats{display:flex;align-items:center;gap:32px}
.stat-item{text-align:center}
.stat-number{display:block;font-size:1.8rem;font-weight:800;color:var(--text)}
.stat-label{font-size:.8rem;color:var(--text2)}
.stat-divider{width:1px;height:40px;background:var(--border)}

/* BOARD PREVIEW */
.hero-visual{flex:0 0 420px}
.board-preview{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-glow),var(--shadow)}
.board-glow{position:absolute;inset:-2px;background:linear-gradient(135deg,var(--accent),var(--accent2),var(--cyan));border-radius:22px;z-index:-1}
.mini-board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;background:#1a1a26}
.mini-board .cell{aspect-ratio:1}
.mini-board .cell.light{background:#f0d9b5}
.mini-board .cell.dark{background:#b58863}
.mini-board .piece{width:70%;height:70%;border-radius:50%;margin:15%;box-shadow:inset 0 -3px 6px rgba(0,0,0,.3),0 2px 4px rgba(0,0,0,.4)}
.mini-board .piece.p1{background:radial-gradient(circle at 35% 35%,#fff5e0,#e8c07d)}
.mini-board .piece.p2{background:radial-gradient(circle at 35% 35%,#555,#1a1a1a)}
.mini-board .piece.highlight{box-shadow:0 0 12px rgba(124,106,247,.8),0 0 24px rgba(124,106,247,.4)}
.board-overlay{position:absolute;bottom:0;left:0;right:0;padding:16px;background:linear-gradient(transparent,rgba(10,10,15,.9));display:flex;align-items:center;justify-content:space-between}
.overlay-tag{font-size:.85rem;color:var(--accent)}
.ai-thinking{display:flex;gap:4px}
.ai-thinking span{width:6px;height:6px;background:var(--accent);border-radius:50%;animation:aiDot 1.2s infinite}
.ai-thinking span:nth-child(2){animation-delay:.2s}
.ai-thinking span:nth-child(3){animation-delay:.4s}
@keyframes aiDot{0%,60%,100%{transform:translateY(0)}30%{transform:translateY(-6px)}}

/* SECTIONS */
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section-header{text-align:center;margin-bottom:64px}
.section-title{font-size:clamp(1.8rem,3.5vw,2.8rem);font-weight:800;line-height:1.2}
.features{padding:100px 0;position:relative;z-index:1}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:auto auto;gap:20px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:all .3s;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(124,106,247,.05),transparent);opacity:0;transition:.3s}
.feature-card:hover{border-color:var(--border2);transform:translateY(-4px);box-shadow:var(--shadow-glow)}
.feature-card:hover::before{opacity:1}
.feature-card--large{grid-column:1/3;grid-row:1/2}
.feature-icon{font-size:2.5rem;margin-bottom:16px}
.feature-card h3{font-size:1.2rem;font-weight:700;margin-bottom:10px}
.feature-card p{color:var(--text2);font-size:.9rem;line-height:1.6}
.coach-preview{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.coach-message{background:var(--bg3);border-radius:var(--radius-sm);padding:10px 14px;font-size:.82rem;color:var(--text2);display:flex;gap:8px;align-items:flex-start;border-left:3px solid var(--accent)}

/* LEADERBOARD */
.leaderboard-section{padding:100px 0;position:relative;z-index:1}
.leaderboard-widget{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}
.lb-header{display:flex;border-bottom:1px solid var(--border)}
.lb-tab{flex:1;padding:16px;background:none;border:none;font-family:'Outfit',sans-serif;font-size:.9rem;color:var(--text2);cursor:pointer;transition:.2s}
.lb-tab.active{background:var(--surface2);color:var(--text);border-bottom:2px solid var(--accent)}
.lb-row{display:grid;grid-template-columns:50px 40px 1fr 120px 100px 80px;align-items:center;padding:14px 24px;gap:12px;border-bottom:1px solid var(--border);transition:.2s}
.lb-row:hover{background:var(--surface2)}
.lb-row--top .lb-name{color:var(--gold);font-weight:700}
.lb-rank{font-size:1.1rem;text-align:center}
.lb-avatar{width:32px;height:32px;border-radius:50%;background:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.85rem}
.lb-name{font-weight:600}
.lb-city{color:var(--text2);font-size:.85rem}
.lb-rating{font-weight:700;color:var(--accent);text-align:right}
.lb-winrate{color:var(--green);font-size:.85rem;text-align:right}
.lb-empty{padding:40px;text-align:center;color:var(--text2)}

/* PRICING */
.pricing-section{padding:100px 0;position:relative;z-index:1}
.pricing-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:800px;margin:0 auto}
.pricing-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:40px;position:relative}
.pricing-card--pro{background:linear-gradient(135deg,rgba(124,106,247,.15),rgba(168,85,247,.1));border-color:rgba(124,106,247,.4)}
.pricing-badge{font-size:.8rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;margin-bottom:20px;color:var(--text2)}
.badge-pro{color:var(--accent)}
.pricing-price{font-size:2.5rem;font-weight:900;margin-bottom:32px}
.pricing-price span{font-size:1rem;font-weight:400;color:var(--text2)}
.pricing-features{display:flex;flex-direction:column;gap:12px;margin-bottom:36px;color:var(--text2);font-size:.9rem}
.pricing-features li{padding-left:4px}

/* CTA */
.cta-section{padding:100px 0;position:relative;z-index:1}
.cta-box{background:linear-gradient(135deg,rgba(124,106,247,.2),rgba(168,85,247,.1));border:1px solid rgba(124,106,247,.3);border-radius:24px;padding:80px 40px;text-align:center}
.cta-box h2{font-size:2.5rem;font-weight:800;margin-bottom:16px}
.cta-box p{color:var(--text2);margin-bottom:36px;font-size:1.1rem}

/* FOOTER */
.footer{border-top:1px solid var(--border);padding:60px 0 30px;position:relative;z-index:1}
.footer-content{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:40px}
.footer-brand p{color:var(--text2);font-size:.9rem;margin-top:8px}
.footer-links{display:flex;gap:24px}
.footer-links a{color:var(--text2);font-size:.9rem;transition:.2s}
.footer-links a:hover{color:var(--text)}
.footer-bottom{border-top:1px solid var(--border);padding-top:24px;text-align:center;color:var(--text2);font-size:.85rem}

/* RESPONSIVE */

/* Mobile nav open */
.nav-links.nav-open,
.nav-actions.nav-open {
  display: flex !important;
  flex-direction: column;
  position: fixed;
  top: 57px; left: 0; right: 0;
  background: rgba(10,10,15,.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 20px 24px;
  gap: 12px;
  z-index: 99;
}
.nav-actions.nav-open { top: auto; bottom: 0; border-top: 1px solid var(--border); border-bottom: none; }

/* Lobby mobile */
.lobby-page { padding: 90px 16px 40px; }
@media(max-width:1024px){
  .hero{flex-direction:column;text-align:center;padding-top:120px}
  .hero-subtitle{max-width:100%;margin-inline:auto}
  .hero-actions{justify-content:center}
  .hero-stats{justify-content:center}
  .hero-visual{width:100%;max-width:380px;margin:0 auto}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .feature-card--large{grid-column:1/3}
  .lobby-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .nav-links,.nav-actions{display:none}
  .nav-burger{display:flex}
  .features-grid{grid-template-columns:1fr}
  .feature-card--large{grid-column:1}
  .pricing-grid{grid-template-columns:1fr}
  .lb-row{grid-template-columns:40px 36px 1fr 80px;gap:8px}
  .lb-city,.lb-winrate{display:none}
  .footer-content{flex-direction:column;gap:24px}
  .footer-links{flex-wrap:wrap}
  .lobby-grid{grid-template-columns:1fr}
  .hero-stats{gap:16px}
  .stat-number{font-size:1.4rem}
  .cta-box{padding:40px 20px}
  .cta-box h2{font-size:1.8rem}
  .hero{padding-bottom:80px}
}
@media(max-width:480px){
  .hero-title{font-size:2rem}
  .hero-actions{flex-direction:column;align-items:center}
  .btn-hero,.btn-hero-outline{width:100%;justify-content:center}
  .hero-stats{flex-direction:column;gap:12px}
  .stat-divider{width:40px;height:1px}
  .section-header{margin-bottom:40px}
  .features{padding:60px 0}
  .leaderboard-section,.pricing-section,.cta-section{padding:60px 0}
  .profile-stats{grid-template-columns:repeat(2,1fr)}
  .profile-info{flex-direction:column;align-items:flex-start}
  .games-table th:nth-child(3),.games-table td:nth-child(3){display:none}
  .auth-card{padding:28px 16px}
  .form-row{grid-template-columns:1fr}
}