:root {
    --bg-dark: #07090f;
    --bg-card: rgba(30, 41, 59, 0.4);
    --border-card: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #8b5cf6;
    --accent-hover: #7c3aed;
}

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

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

h1, h2, h3 { font-family: 'Outfit', sans-serif; }

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    position: fixed;
    top: 0; width: 100%;
    background: rgba(7, 9, 15, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
    border-bottom: 1px solid var(--border-card);
}

.logo-container {
    display: flex; align-items: center; gap: 12px;
}

.logo {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), #3b82f6);
    border-radius: 8px;
    display: flex; justify-content: center; align-items: center;
    font-weight: 800; font-family: 'Outfit'; font-size: 20px; text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.logo-text { font-family: 'Outfit'; font-weight: 600; font-size: 18px; letter-spacing: 1px; }

.nav-cta {
    color: var(--text-main);
    text-decoration: none; font-weight: 500; font-size: 14px;
    border: 1px solid var(--border-card);
    padding: 8px 20px; border-radius: 20px;
    transition: 0.3s;
}
.nav-cta:hover { background: rgba(255,255,255,0.05); }

.hero {
    position: relative;
    min-height: 100vh;
    display: flex; justify-content: center; align-items: center;
    text-align: center; overflow: hidden;
}

.hero-bg {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background-image: url('assets/hero_bg.png');
    background-size: cover; background-position: center;
    opacity: 0.4; z-index: -1;
}

.hero-bg::after {
    content: ''; position: absolute; inset: 0;
    background: radial-gradient(circle at center, transparent 0%, var(--bg-dark) 100%);
}

.hero-content { max-width: 800px; padding: 0 20px; z-index: 10; margin-top: 60px;}
.hero-content h1 {
    font-size: 5rem; line-height: 1.1; margin-bottom: 24px;
    background: linear-gradient(to bottom right, #ffffff, #94a3b8);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    animation: fadeUp 1s ease-out;
}
.hero-content p { 
    font-size: 1.25rem; color: var(--text-muted); margin-bottom: 40px; 
    animation: fadeUp 1s ease-out 0.2s both;
}
.hero-content .cta-button {
    animation: fadeUp 1s ease-out 0.4s both;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.cta-button {
    display: inline-block; padding: 16px 32px;
    background: var(--accent); color: white; border: none;
    border-radius: 30px; font-weight: 600; font-size: 16px;
    text-decoration: none; cursor: pointer; transition: 0.3s transform, 0.3s box-shadow;
}
.cta-button:hover {
    background: var(--accent-hover);
    transform: translateY(-3px); box-shadow: 0 10px 25px rgba(139, 92, 246, 0.4);
}
.cta-button.large { padding: 20px 40px; font-size: 18px; }

section { padding: 120px 20px; max-width: 1200px; margin: 0 auto; text-align: center; }

h2 { font-size: 3rem; margin-bottom: 60px; color: #fff;}

.rules-grid, .modes-container {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.rule-card, .mode-card {
    background: var(--bg-card); border: 1px solid var(--border-card);
    border-radius: 16px; padding: 40px; text-align: left;
    backdrop-filter: blur(10px);
    transition: 0.3s all ease-out;
}

/* Scroll Animation classes */
.hover-up {
    opacity: 0; transform: translateY(40px);
}
.hover-up.visible {
    opacity: 1; transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.rule-icon { font-family: 'Outfit'; font-size: 48px; font-weight: 800; color: rgba(255,255,255,0.08); margin-bottom: 20px; line-height: 1;}
.rule-card h3, .mode-card h3 { font-size: 1.5rem; margin-bottom: 16px; }
.rule-card p, .mode-card p { color: var(--text-muted); font-size: 1rem; }

.mode-card { position: relative; overflow: hidden; cursor: default;}
.mode-card::before {
    content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    opacity: 0; transition: 0.5s;
}
.mode-card:hover { border-color: rgba(139, 92, 246, 0.5); transform: translateY(-5px); }
.mode-card:hover::before { opacity: 1; transform: scale(1.1); }

.badge { position: absolute; top: 20px; right: 20px; background: rgba(139, 92, 246, 0.2); color: #c4b5fd; padding: 4px 10px; border-radius: 12px; font-size: 12px; font-weight: 600;}

.download { margin-top: 50px; background: rgba(139, 92, 246, 0.05); border-radius: 24px; padding: 100px 20px; border: 1px solid rgba(139, 92, 246, 0.1);}
.download-box { max-width: 600px; margin: 0 auto; text-align: center;}
.download-box h2 { margin-bottom: 20px; font-size: 2.5rem; }
.download-box p { margin-bottom: 40px; color: var(--text-muted); font-size: 1.1rem; }
.dl-info { margin-top: 16px; color: #64748b; font-size: 14px; }

footer { padding: 40px; text-align: center; color: var(--text-muted); font-size: 14px; border-top: 1px solid var(--border-card); }