/* Modern Layout System */

/* Container System */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: var(--container-padding);
}

/* Grid 系统 */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-hero {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    min-height: 50vh;
}

/* Flexbox 系统 */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.flex-wrap {
    flex-wrap: wrap;
}

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

.items-start {
    align-items: flex-start;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

/* Section 布局 */
.section {
    padding: var(--section-padding);
}

.section-hero {
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(var(--bg-overlay), var(--bg-overlay)), 
                url('../images/story-background.jpg');
    background-size: cover;
    background-position: center;
    color: white;
}

.section-alternate {
    background: var(--bg-section);
}

/* 卡片布局 */
.card {
    background: var(--bg-card);
    padding: var(--card-padding);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.card-compact {
    padding: var(--space-md);
}

.card-feature {
    text-align: center;
    border: 2px solid transparent;
    transition: all var(--transition-normal);
}

.card-feature:hover {
    border-color: var(--primary-color);
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(220, 20, 60, 0.2);
}

/* 响应式断点 */
@media (max-width: 968px) {
    .grid-hero,
    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .section-hero {
        min-height: 40vh;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .section {
        padding: var(--space-lg) 0;
    }
    
    .grid {
        gap: var(--space-md);
    }
}