:root {
    --primary-color: #6366f1;
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --secondary-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --dark-bg: #0f172a;
    --light-bg: #f8fafc;
    --card-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --premium-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--light-bg);
    color: #1e293b;
    overflow-x: hidden;
}

.bg-premium {
    background: var(--primary-gradient);
}

.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.btn-premium {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 12px 28px;
    border-radius: 12px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.4);
}

.btn-premium:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.5);
    color: white;
}

.card-premium {
    background: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card-premium:hover {
    transform: translateY(-5px);
    box-shadow: var(--premium-shadow);
}

/* Navbar */
.navbar-custom {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 15px 0;
}

.nav-link-custom {
    font-weight: 500;
    color: #64748b;
    margin: 0 15px;
    transition: color 0.3s ease;
}

.nav-link-custom:hover,
.nav-link-custom.active {
    color: var(--primary-color);
}

/* Animations */
@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }

    100% {
        transform: translateY(0px);
    }
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Ad & Placeholder Styles */
.ad-container {
    margin: 2rem 0;
    text-align: center;
    width: 100%;
    overflow: hidden;
}

.ad-placeholder {
    margin: 2rem 0;
    padding: 3rem 1rem;
    background: #f8fafc;
    border: 2px dashed #e2e8f0;
    border-radius: 24px;
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-placeholder:hover {
    border-color: var(--primary-color);
    background: #f1f5f9;
}

.ad-placeholder-title {
    font-weight: 800;
    font-size: 1.1rem;
    color: #1e293b;
    margin-bottom: 0.25rem;
}

.ad-placeholder-text {
    color: #64748b;
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.ad-placeholder-link {
    font-weight: 700;
    font-size: 0.8rem;
    color: var(--primary-color);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ad-placeholder i {
    font-size: 1.5rem;
    color: #cbd5e1;
}