/*
    [FILE] home.css
    [POS] 首页专用样式 - Hero、作品展示、服务标签、统计数据、CTA、联系表单
    [IN] base.css, components.css
    [OUT] 首页样式规则
    [DEP] base.css, components.css
    [SIDE EFFECT] 无
    [TEST] 手动测试: 验证首页各区块样式

    Dribbble Style - Home Page
    ============================================ */

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    padding: calc(64px + var(--spacing-3xl)) 0 var(--spacing-3xl);
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    opacity: 0.03;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
    position: relative;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

/* ============================================
   Tabs
   ============================================ */

.tabs {
    display: inline-flex;
    background: var(--color-bg-secondary);
    padding: 4px;
    border-radius: var(--radius-full);
    gap: 4px;
}

.tab {
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--color-text-primary);
}

.tab.active {
    color: var(--color-bg);
    background: var(--color-text-primary);
}

/* ============================================
   Works Section (Masonry)
   ============================================ */

.works {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
}

.works-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

/* Masonry layout using CSS Grid */
.works-grid.masonry {
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 10px;
}

.work-card {
    display: block;
    background: var(--color-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
    margin-bottom: var(--spacing-xl);
}

.work-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.work-image {
    position: relative;
    overflow: hidden;
}

.work-image img {
    width: 100%;
    height: auto;
    display: block;
}

.work-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.work-card:hover .work-overlay {
    opacity: 1;
}

.btn-view {
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-bg);
    background: var(--color-primary);
    border-radius: var(--radius-sm);
}

.work-info {
    padding: var(--spacing-lg);
}

.work-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.work-meta {
    margin-bottom: var(--spacing-sm);
}

.work-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-tertiary);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

.work-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.work-author img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

.author-name {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.works-footer {
    text-align: center;
    margin-top: var(--spacing-2xl);
}

/* ============================================
   Services Tags
   ============================================ */

.services-tags {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg);
    text-align: center;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-2xl);
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

/* ============================================
   Stats Section
   ============================================ */

.stats {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    text-align: center;
}

.stat-number {
    font-size: 40px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    padding: var(--spacing-3xl) 0;
    background: var(--color-primary);
    text-align: center;
}

.cta-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-bg);
    margin-bottom: var(--spacing-sm);
}

.cta-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

/* ============================================
   Contact Section
    ============================================ */

.contact {
    padding: var(--spacing-3xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.contact-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-description {
    font-size: 15px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.contact-item svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.contact-label {
    display: block;
    font-size: 12px;
    color: var(--color-text-tertiary);
    margin-bottom: 2px;
}

.contact-value {
    display: block;
    font-size: 14px;
    color: var(--color-text-primary);
}

.contact-form {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-md);
}

.contact-form .form-group input,
.contact-form .form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast);
}

.contact-form .form-group input:focus,
.contact-form .form-group textarea:focus {
    border-color: var(--color-text-secondary);
}

.contact-form .form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ============================================
   Form Messages
   ============================================ */

.form-message {
    padding: 12px 16px;
    margin-top: var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 14px;
    text-align: center;
    animation: fadeIn 0.3s ease forwards;
}

.form-message-success {
    background: var(--color-success-bg);
    color: #166534;
    border: 1px solid var(--color-success-border);
}

.form-message-error {
    background: var(--color-error-bg);
    color: #991B1B;
    border: 1px solid var(--color-error-border);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Responsive Home
    ============================================ */

@media (max-width: 1200px) {
    .works-grid.masonry {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .works-grid.masonry {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .cta-actions {
        flex-direction: column;
    }

    .cta-actions .btn-white,
    .cta-actions .btn-outline {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .works-grid.masonry {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .tabs {
        flex-wrap: wrap;
        justify-content: center;
    }
}