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

* {
    font-family: 'Inter', sans-serif;
}

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    background-size: 400% 400%;
    animation: gradient 15s ease infinite;
    min-height: 100vh;
}

@keyframes gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

.glass-strong {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(30px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 12px 48px 0 rgba(31, 38, 135, 0.45);
}

.btn-glass {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 16px 56px 0 rgba(31, 38, 135, 0.5), 
                inset 0 0 20px rgba(255, 255, 255, 0.2);
}

.quest-card {
    transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.quest-card:hover {
    transform: translateY(-8px) scale(1.02);
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 60px 0 rgba(31, 38, 135, 0.6),
                inset 0 0 30px rgba(255, 255, 255, 0.15);
}

.nav-link {
    position: relative;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: white;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateX(-50%);
    border-radius: 9999px;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active::after {
    width: 100%;
}

.page-section {
    display: none;
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.page-section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.badge {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}