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

:root {
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --dark-bg: #0f172a;
    --card-bg: #1e293b;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --accent: #10b981;
    --s-tier: #ff4444;
    --a-tier: #ffa500;
    --b-tier: #ffeb3b;
    --c-tier: #4caf50;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.navbar {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s, transform 0.2s;
    font-weight: 500;
    display: block;
    padding: 0.5rem 0;
}

.nav-links a:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-links a.active {
    color: var(--accent);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--gradient-1);
    margin: -2rem -2rem 3rem -2rem;
    border-radius: 0 0 20px 20px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
    max-width: 600px;
    margin: 0 auto;
}

.section {
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--primary-color);
    display: inline-block;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.3);
}

.card h3 {
    color: var(--primary-color);
    margin-bottom: 0.8rem;
    font-size: 1.4rem;
}

.card p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.tier-list {
    margin-top: 2rem;
}

.tier-section {
    margin-bottom: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    border-left: 5px solid;
}

.tier-section.s-tier {
    border-left-color: var(--s-tier);
}

.tier-section.a-tier {
    border-left-color: var(--a-tier);
}

.tier-section.b-tier {
    border-left-color: var(--b-tier);
}

.tier-section.c-tier {
    border-left-color: var(--c-tier);
}

.tier-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.tier-badge {
    font-size: 2rem;
    font-weight: bold;
    padding: 0.5rem 1.5rem;
    border-radius: 8px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.tier-badge.s {
    background: var(--s-tier);
}

.tier-badge.a {
    background: var(--a-tier);
    color: #000;
}

.tier-badge.b {
    background: var(--b-tier);
    color: #000;
}

.tier-badge.c {
    background: var(--c-tier);
}

.tier-description {
    color: var(--text-secondary);
    font-style: italic;
}

.tier-items {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.tier-item {
    background: rgba(15, 23, 42, 0.5);
    border-radius: 8px;
    padding: 1rem;
    transition: transform 0.2s;
}

.tier-item:hover {
    transform: scale(1.05);
    background: rgba(99, 102, 241, 0.1);
}

.tier-item h4 {
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.tier-item .stats {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.stat-badge {
    background: rgba(99, 102, 241, 0.3);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: var(--gradient-1);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
    font-weight: 600;
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background: var(--gradient-2);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.feature {
    text-align: center;
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 12px;
    transition: transform 0.3s;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.boss-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 5px solid var(--primary-color);
}

.boss-card.beginner {
    border-left-color: #4caf50;
}

.boss-card.intermediate {
    border-left-color: #ffa500;
}

.boss-card.hard {
    border-left-color: #ff4444;
}

.boss-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.difficulty-badge {
    padding: 0.3rem 0.8rem;
    border-radius: 6px;
    font-weight: bold;
    font-size: 0.9rem;
}

.difficulty-badge.beginner {
    background: #4caf50;
}

.difficulty-badge.intermediate {
    background: #ffa500;
    color: #000;
}

.difficulty-badge.hard {
    background: #ff4444;
}

.guide-section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.guide-section h3 {
    color: var(--accent);
    margin-bottom: 1rem;
}

.guide-section ul {
    list-style-position: inside;
    color: var(--text-secondary);
}

.guide-section ul li {
    padding: 0.5rem 0;
    padding-left: 1rem;
}

footer {
    background: var(--card-bg);
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    color: var(--text-secondary);
}

.footer {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    color: var(--text-secondary);
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--accent);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-section p {
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    margin: 0.5rem 0;
}

.stars {
    color: #ffd700;
    margin-right: 0.5rem;
}

.mt-4 {
    margin-top: 2rem;
}

.text-center {
    text-align: center;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-direction: column;
        width: 100%;
        text-align: center;
        gap: 0.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .tier-items {
        grid-template-columns: 1fr;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 1rem;
    }
    
    .boss-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .tier-badge {
        font-size: 1.5rem;
        padding: 0.4rem 1rem;
    }
}