/* ========================================
   DEEP LEARNING STUDIO PAGE STYLES
   ======================================== */

body {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
}

body[data-theme="light"] {
    --dark: #f7f7f9;
    --dark-light: #ffffff;
    --text: #0f172a;
    --text-muted: #475569;
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-light) 100%);
}

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1.5rem 2rem;
}

nav {
    gap: 2rem;
}

.hero {
    padding: 8rem 2rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    color: var(--success);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, #ffffff, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #ffffff;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.4);
}

.secondary-btn {
    background: rgba(102, 126, 234, 0.1);
    color: #ffffff;
    padding: 1rem 2.5rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    border: 2px solid rgba(102, 126, 234, 0.3);
    transition: all var(--transition);
}

.secondary-btn:hover {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--primary);
}

.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #ffffff;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: transform var(--transition), border-color var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.feature-description {
    color: var(--text-muted);
    line-height: 1.7;
}

.pricing {
    padding: 6rem 2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 4rem auto 0;
}

.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 3rem;
    position: relative;
}

.pricing-card.featured {
    border-color: var(--primary);
    border-width: 2px;
}

.pricing-tier {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.pricing-price {
    font-size: 3.5rem;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.pricing-period {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.pricing-features {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text);
}

.pricing-features li::before {
    content: "✓ ";
    color: var(--success);
    font-weight: 700;
    margin-right: 0.5rem;
}

.page-toolbar {
    display: flex;
    gap: 1rem;
    align-items: center;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.25rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    nav {
        flex-direction: column;
    }

    .page-toolbar {
        flex-wrap: wrap;
        justify-content: center;
    }
}