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

:root {
    --primary: #00D4FF;
    --secondary: #7B2FFF;
    --accent: #00FF88;
    --gold: #FFD700;
    --silver: #C0C0C0;
    --bronze: #CD7F32;
    --bg-dark: #050510;
    --bg-card: rgba(255,255,255,0.04);
    --bg-glass: rgba(255,255,255,0.06);
    --border: rgba(255,255,255,0.08);
    --text: #ffffff;
    --text-dim: rgba(255,255,255,0.6);
    --text-muted: rgba(255,255,255,0.35);
    --danger: #ff4757;
    --success: #00FF88;
    --warning: #ffa502;
    --gradient-main: linear-gradient(135deg, #00D4FF, #7B2FFF);
    --gradient-accent: linear-gradient(135deg, #7B2FFF, #FF6B6B);
    --gradient-gold: linear-gradient(135deg, #FFD700, #FF8C00);
    --shadow-glow: 0 0 40px rgba(0,212,255,0.15);
    --shadow-card: 0 8px 32px rgba(0,0,0,0.4);
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ==================== SCROLLBAR ==================== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--secondary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ==================== PARTICLES CANVAS ==================== */
#particles-canvas {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0; pointer-events: none;
}

/* ==================== NAVBAR ==================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    padding: 14px 40px;
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(5,5,16,0.75);
    backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(0,212,255,0.08);
    transition: var(--transition);
}
.navbar::after {
    content:''; position:absolute; bottom:0; left:0; right:0; height:1px;
    background: linear-gradient(90deg, transparent, rgba(0,212,255,0.3), rgba(123,47,255,0.3), transparent);
}
.navbar.scrolled { padding: 10px 40px; background: rgba(5,5,16,0.95); box-shadow: 0 4px 30px rgba(0,0,0,0.4); }
.navbar-logo {
    display: flex; align-items: center; gap: 12px; text-decoration: none;
}
.navbar-logo img { width: 42px; height: 42px; border-radius: 12px; transition: var(--transition); }
.navbar-logo:hover img { transform: rotate(-5deg) scale(1.05); }
.navbar-logo span {
    font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1.1rem;
    background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-links { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-links a {
    color: var(--text-dim); text-decoration: none; font-weight: 500; font-size: 0.9rem;
    transition: var(--transition); position: relative; padding: 6px 0;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active-link { color: var(--primary); }
.nav-links a::after {
    content:''; position:absolute; bottom:0; left:50%; width:0; height:2px;
    background: var(--gradient-main); transition: var(--transition); border-radius:2px;
    transform: translateX(-50%);
}
.nav-links a:hover::after, .nav-links a.active-link::after { width: 100%; }
.hamburger {
    display: none; flex-direction: column; gap: 6px; cursor: pointer; background: none; border: none; padding: 8px;
    z-index: 1001;
}
.hamburger span { width: 26px; height: 2px; background: var(--text); transition: var(--transition); border-radius:2px; display:block; }

/* ==================== BUTTONS ==================== */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 36px; background: var(--gradient-main);
    color: #fff; border: none; border-radius: var(--radius);
    font-family: 'Inter', sans-serif; font-weight: 700; font-size: 1rem;
    cursor: pointer; transition: var(--transition); text-decoration: none;
    position: relative; overflow: hidden;
}
.btn-primary::before {
    content:''; position:absolute; top:0; left:-100%; width:100%; height:100%;
    background:linear-gradient(90deg,transparent,rgba(255,255,255,0.2),transparent);
    transition:0.5s;
}
.btn-primary:hover::before { left: 100%; }
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 10px 40px rgba(0,212,255,0.3); }

.btn-secondary {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 36px; background: transparent;
    color: var(--primary); border: 2px solid var(--primary);
    border-radius: var(--radius); font-family: 'Inter', sans-serif;
    font-weight: 600; font-size: 1rem; cursor: pointer;
    transition: var(--transition); text-decoration: none;
}
.btn-secondary:hover {
    background: rgba(0,212,255,0.1); transform: translateY(-3px);
    box-shadow: 0 10px 40px rgba(0,212,255,0.15);
}

.btn-glow {
    animation: btnGlow 2s ease-in-out infinite alternate;
}
@keyframes btnGlow {
    from { box-shadow: 0 0 20px rgba(0,212,255,0.3), 0 0 40px rgba(123,47,255,0.1); }
    to { box-shadow: 0 0 30px rgba(0,212,255,0.5), 0 0 60px rgba(123,47,255,0.2); }
}

/* ==================== HERO SECTION ==================== */
.hero {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    position: relative; padding: 120px 40px 80px; text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(ellipse at 30% 20%, rgba(0,212,255,0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(123,47,255,0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 50% 50%, rgba(0,255,136,0.03) 0%, transparent 60%);
    z-index: 0;
}
.hero-content { position: relative; z-index: 2; max-width: 900px; }
.hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px; background: var(--bg-glass);
    border: 1px solid var(--border); border-radius: 50px;
    font-size: 0.85rem; color: var(--primary); margin-bottom: 24px;
    animation: fadeInDown 0.8s ease;
}
.hero-badge .dot { width:8px; height:8px; border-radius:50%; background:var(--accent); animation: pulse 2s infinite; }
.hero-title {
    font-family: 'Outfit', sans-serif; font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900; line-height: 1.1; margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #00D4FF 50%, #7B2FFF 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease 0.2s both;
}
.hero-subtitle {
    font-size: 1.2rem; color: var(--text-dim); margin-bottom: 12px;
    animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-eligibility {
    display: inline-block; padding: 8px 24px;
    background: rgba(123,47,255,0.15); border: 1px solid rgba(123,47,255,0.3);
    border-radius: 50px; font-size: 0.95rem; color: #c4a0ff;
    margin-bottom: 30px; animation: fadeInUp 0.8s ease 0.5s both;
}
.hero-banner {
    width: 100%; max-width: 800px; border-radius: var(--radius-lg);
    margin: 30px auto; overflow: hidden;
    border: 1px solid var(--border); box-shadow: var(--shadow-glow);
    animation: fadeInUp 0.8s ease 0.6s both;
}
.hero-banner img { width: 100%; display: block; transition: var(--transition); }
.hero-banner:hover img { transform: scale(1.03); }
.hero-buttons {
    display: flex; gap: 16px; justify-content: center; flex-wrap: wrap;
    margin-top: 30px; animation: fadeInUp 0.8s ease 0.7s both;
}

/* ==================== SECTIONS ==================== */
section { padding: 80px 40px; position: relative; z-index: 1; }
.section-header { text-align: center; margin-bottom: 60px; }
.section-label {
    font-size: 0.85rem; font-weight: 600; color: var(--primary);
    text-transform: uppercase; letter-spacing: 3px; margin-bottom: 12px;
}
.section-title {
    font-family: 'Outfit', sans-serif; font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800; margin-bottom: 16px;
}
.section-desc { color: var(--text-dim); max-width: 600px; margin: 0 auto; font-size: 1.05rem; }

/* ==================== HIGHLIGHTS CARDS ==================== */
.highlights-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px; max-width: 1100px; margin: 0 auto;
}
.highlight-card {
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 40px 30px;
    text-align: center; transition: var(--transition); position: relative; overflow: hidden;
}
.highlight-card::before {
    content:''; position:absolute; top:0; left:0; right:0; height:3px;
    background: var(--gradient-main); opacity:0; transition: var(--transition);
}
.highlight-card:hover { transform: translateY(-8px); border-color: rgba(0,212,255,0.2); }
.highlight-card:hover::before { opacity:1; }
.highlight-icon {
    width: 72px; height: 72px; border-radius: 20px; margin: 0 auto 20px;
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; background: rgba(0,212,255,0.1);
}
.highlight-card h3 { font-family:'Outfit',sans-serif; font-size:1.3rem; margin-bottom:10px; }
.highlight-card p { color: var(--text-dim); font-size: 0.95rem; }

/* ==================== ROUNDS SECTION ==================== */
.rounds-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px; max-width: 900px; margin: 0 auto;
}
.round-card {
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: var(--radius-lg); overflow: hidden; transition: var(--transition);
}
.round-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-glow); }
.round-card img { width:100%; height:200px; object-fit:cover; }
.round-card-body { padding: 24px; }
.round-card-body h3 { font-family:'Outfit',sans-serif; font-size:1.3rem; margin-bottom:8px; color:var(--primary); }
.round-card-body p { color: var(--text-dim); font-size:0.9rem; }

/* ==================== PRIZES SECTION ==================== */
.prizes-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px; max-width: 1100px; margin: 0 auto;
}
.prize-card {
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 0; overflow: hidden;
    transition: var(--transition); position: relative;
}
.prize-card:hover { transform: translateY(-8px); }
.prize-card.gold { border-color: rgba(255,215,0,0.3); }
.prize-card.gold:hover { box-shadow: 0 20px 60px rgba(255,215,0,0.15); }
.prize-card.silver { border-color: rgba(192,192,192,0.3); }
.prize-card.silver:hover { box-shadow: 0 20px 60px rgba(192,192,192,0.1); }
.prize-card.bronze { border-color: rgba(205,127,50,0.3); }
.prize-card.bronze:hover { box-shadow: 0 20px 60px rgba(205,127,50,0.1); }
.prize-rank {
    padding: 6px 20px; font-weight: 800; font-size: 0.85rem; text-align: center;
    text-transform: uppercase; letter-spacing: 2px;
}
.gold .prize-rank { background: var(--gradient-gold); color: #000; }
.silver .prize-rank { background: linear-gradient(135deg,#C0C0C0,#E8E8E8); color: #333; }
.bronze .prize-rank { background: linear-gradient(135deg,#CD7F32,#DDA15E); color: #fff; }
.prize-card img { width:100%; height:200px; object-fit:cover; }
.prize-details { padding: 24px; }
.prize-details h3 { font-family:'Outfit',sans-serif; font-size:1.4rem; margin-bottom:12px; }
.prize-details ul { list-style:none; }
.prize-details ul li {
    padding: 6px 0; color: var(--text-dim); font-size: 0.9rem;
    display: flex; align-items: center; gap: 8px;
}
.prize-details ul li::before { content: '✦'; color: var(--accent); font-size:0.7rem; }

/* ==================== CTA SECTION ==================== */
.cta-section {
    text-align: center; padding: 100px 40px;
    background: radial-gradient(ellipse at center, rgba(123,47,255,0.08), transparent 70%);
}
.cta-section h2 {
    font-family:'Outfit',sans-serif; font-size:clamp(2rem,4vw,3rem);
    font-weight:900; margin-bottom:20px;
}
.cta-section p { color:var(--text-dim); font-size:1.1rem; margin-bottom:30px; max-width:500px; margin-left:auto; margin-right:auto; }

/* ==================== FOOTER ==================== */
.footer {
    padding: 40px; text-align: center;
    border-top: 1px solid var(--border);
    color: var(--text-muted); font-size: 0.85rem;
}
.footer a { color: var(--primary); text-decoration: none; }

/* ==================== ANIMATIONS ==================== */
@keyframes fadeInUp { from { opacity:0; transform:translateY(30px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeInDown { from { opacity:0; transform:translateY(-20px); } to { opacity:1; transform:translateY(0); } }
@keyframes fadeIn { from { opacity:0; } to { opacity:1; } }
@keyframes pulse { 0%,100% { opacity:1; } 50% { opacity:0.5; } }
@keyframes float { 0%,100% { transform:translateY(0); } 50% { transform:translateY(-10px); } }
@keyframes slideInLeft { from { opacity:0; transform:translateX(-40px); } to { opacity:1; transform:translateX(0); } }
@keyframes slideInRight { from { opacity:0; transform:translateX(40px); } to { opacity:1; transform:translateX(0); } }
@keyframes scaleIn { from { opacity:0; transform:scale(0.8); } to { opacity:1; transform:scale(1); } }
@keyframes shimmer { 0% { background-position:-1000px 0; } 100% { background-position:1000px 0; } }
@keyframes rotate { from { transform:rotate(0deg); } to { transform:rotate(360deg); } }

.animate-on-scroll { opacity:0; transform:translateY(30px); transition: all 0.6s cubic-bezier(0.4,0,0.2,1); }
.animate-on-scroll.visible { opacity:1; transform:translateY(0); }

/* ==================== FORM STYLES ==================== */
.form-container {
    max-width: 500px; margin: 0 auto; padding: 40px;
    background: var(--bg-glass); border: 1px solid var(--border);
    border-radius: var(--radius-lg); backdrop-filter: blur(20px);
}
.form-group { margin-bottom: 20px; text-align: left; }
.form-group label {
    display: block; margin-bottom: 8px; font-weight: 500;
    font-size: 0.9rem; color: var(--text-dim);
}
.form-control {
    width: 100%; padding: 14px 18px; background: rgba(255,255,255,0.05);
    border: 1px solid var(--border); border-radius: var(--radius-sm);
    color: var(--text); font-family: 'Inter', sans-serif; font-size: 0.95rem;
    transition: var(--transition); outline: none;
}
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}
.form-control::placeholder { color: var(--text-muted); }
.form-control option { background: #0a0a1a; color: #fff; }
select.form-control { cursor: pointer; appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2300D4FF' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 14px center;
}
.form-error { color: var(--danger); font-size: 0.8rem; margin-top: 5px; }
.form-success { color: var(--success); font-size: 0.8rem; margin-top: 5px; }

/* ==================== AUTH PAGES ==================== */
.auth-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    padding: 40px 20px; position: relative;
}
.auth-page .hero-bg { position:fixed; }
.auth-card {
    width: 100%; max-width: 480px; background: var(--bg-glass);
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 48px 40px; backdrop-filter: blur(20px);
    box-shadow: var(--shadow-card); animation: scaleIn 0.5s ease;
}
.auth-card h1 {
    font-family:'Outfit',sans-serif; font-size:1.8rem; text-align:center;
    margin-bottom:8px; background:var(--gradient-main);
    -webkit-background-clip:text; -webkit-text-fill-color:transparent;
}
.auth-card .subtitle { text-align:center; color:var(--text-dim); margin-bottom:30px; font-size:0.9rem; }
.auth-card .form-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.auth-footer { text-align:center; margin-top:24px; color:var(--text-dim); font-size:0.9rem; }
.auth-footer a { color:var(--primary); text-decoration:none; font-weight:600; }

/* ==================== TOAST/ALERT ==================== */
.toast {
    position:fixed; top:20px; right:20px; z-index:9999;
    padding:16px 24px; border-radius:var(--radius);
    font-size:0.9rem; font-weight:500; animation:slideInRight 0.4s ease;
    backdrop-filter:blur(20px); max-width:400px;
}
.toast-success { background:rgba(0,255,136,0.15); border:1px solid rgba(0,255,136,0.3); color:var(--success); }
.toast-error { background:rgba(255,71,87,0.15); border:1px solid rgba(255,71,87,0.3); color:var(--danger); }
.toast-warning { background:rgba(255,165,2,0.15); border:1px solid rgba(255,165,2,0.3); color:var(--warning); }

/* ==================== MOBILE RESPONSIVE ==================== */
/* Nav overlay for closing menu on outside click */
.nav-overlay {
    display:none; position:fixed; top:0; left:0; right:0; bottom:0;
    background:rgba(0,0,0,0.6); z-index:999;
}
.nav-overlay.active { display:block; }

@media (max-width: 768px) {
    .navbar { padding: 12px 16px; }
    .navbar-logo span { font-size: 0.95rem; }
    .nav-links {
        display:none; position:fixed; top:0; left:0; width:100%; height:100vh;
        background:#050510; flex-direction:column; align-items:center;
        justify-content:center; gap:8px; z-index:1000;
        overflow-y:auto; padding:60px 30px 40px; box-sizing:border-box;
    }
    .nav-links.active { display:flex; animation: fadeInUp 0.25s ease; }
    .nav-links li { list-style:none; width:100%; text-align:center; }
    .nav-links a {
        font-size: 1.1rem; padding: 14px 20px; display:block;
        border-radius:12px; transition: var(--transition);
        color: var(--text-dim);
    }
    .nav-links a:hover { background:rgba(0,212,255,0.08); color:var(--text); }
    .nav-links .btn-primary {
        margin-top:4px; padding:14px 30px !important; font-size:1rem !important;
        width:auto; display:inline-flex;
    }
    .hamburger { display:flex; z-index:1001; }
    .hamburger.active span:nth-child(1) { transform:rotate(45deg) translate(6px,6px); }
    .hamburger.active span:nth-child(2) { opacity:0; }
    .hamburger.active span:nth-child(3) { transform:rotate(-45deg) translate(6px,-6px); }
    
    .hero { padding: 100px 20px 60px; }
    section { padding: 50px 16px; }
    
    .auth-page { padding: 20px 15px; }
    .auth-card { padding: 32px 20px; border-radius: 20px; }
    .auth-card .form-row { grid-template-columns: 1fr; gap: 12px; }
    
    .prizes-grid, .highlights-grid, .rounds-grid { grid-template-columns: 1fr; }
    .hero-buttons { flex-direction: column; align-items: stretch; width: 100%; max-width: 300px; margin-left: auto; margin-right: auto; }
    .hero-buttons .btn-primary, .hero-buttons .btn-secondary { width: 100%; justify-content: center; }
    
    .form-container { padding: 24px 16px; }
    .form-control { padding: 12px 14px; font-size: 1rem; }
    
    .toast { top: 10px; right: 10px; left: 10px; max-width: none; width: auto; text-align: center; }
    
    .highlight-card { padding: 24px 20px; }
    .section-header { margin-bottom: 40px; }
}

@media (max-width: 480px) {
    .hero-title { font-size: 1.8rem; }
    .section-title { font-size: 1.5rem; }
    .hero-subtitle { font-size: 1rem; }
    .hero-eligibility { font-size: 0.85rem; padding: 6px 16px; }
    .btn-primary, .btn-secondary { padding: 12px 24px; font-size: 0.9rem; }
    .highlight-card h3 { font-size: 1rem; }
    .prize-card { padding: 20px; }
}