/* Landing Page - Dark Theme */

.landing-page {
    max-width: 1200px;
    margin: 0 auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.page-header h1 {
    color: #FFFFFF;
    margin: 0;
}

/* ============================================
   CLASSES GRID
   ============================================ */
.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.class-card {
    background: #1F1F1F;
    border: 1px solid #2D2D2D;
    border-radius: 0.75rem;
    padding: 1.25rem;
    cursor: pointer;
    transition: all 150ms ease;
}

.class-card:hover {
    border-color: #00B4D8;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

.class-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.class-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: #FFFFFF;
    margin: 0;
}

.credit-hours {
    font-size: 0.875rem;
    color: #6B7280;
    background: #1A1A1A;
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
}

.class-card-body {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.class-grade .letter-grade {
    font-size: 1.875rem;
    font-weight: 700;
    display: block;
}

.class-grade .percentage {
    font-size: 0.875rem;
    color: #B0B0B0;
}

.class-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: flex-end;
}

.category-chip {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: #1A1A1A;
    color: #B0B0B0;
    border-radius: 9999px;
}

.class-card-footer {
    border-top: 1px solid #2D2D2D;
    padding-top: 0.75rem;
}

.click-hint {
    font-size: 0.875rem;
    color: #00B4D8;
}

/* ============================================
   START PAGE
   ============================================ */
.start-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0A0A0A 0%, #1B2838 50%, #0D1B2A 100%);
    padding: 1.5rem;
}

.start-content {
    text-align: center;
    max-width: 500px;
}

.start-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #FFFFFF;
    margin-bottom: 0.75rem;
}

.start-subtitle {
    font-size: 1rem;
    color: #9CA3AF;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.start-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
    text-align: left;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #D1D5DB;
    font-size: 0.875rem;
}

.feature-icon {
    font-size: 1.25rem;
}

.start-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.start-divider {
    color: #4B5563;
    font-size: 0.875rem;
}

.start-note {
    font-size: 0.75rem;
    color: #6B7280;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
    .page-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .classes-grid {
        grid-template-columns: 1fr;
    }
}