/* ============================================
   武汉圣泰建设有限公司官网 - 首页样式
   ============================================ */

@import url('variables.css');

/* ========== 英雄区域 ========== */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    padding: var(--spacing-3xl) var(--spacing-lg);
    max-width: var(--container-2xl);
    margin: 60px auto 0;
    min-height: calc(100vh - 60px);
}

.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-buttons .btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

.hero-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

@media (max-width: 1024px) {
    .hero {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
        min-height: auto;
        padding: var(--spacing-2xl) var(--spacing-lg);
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 576px) {
    .hero {
        padding: var(--spacing-xl) var(--spacing-md);
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
}

/* ========== 宣传片区域 ========== */
.promo-video {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-3xl);
    align-items: center;
}

.promo-copy .badge {
    margin-bottom: var(--spacing-md);
}

.promo-copy h2 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.promo-copy p {
    color: var(--color-text-medium);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
}

.promo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.promo-media {
    position: relative;
}

.video-card {
    position: relative;
    border-radius: var(--border-radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    cursor: pointer;
    isolation: isolate;
}

.video-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.video-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.65));
    transition: opacity var(--transition-base);
}

.video-card:hover img {
    transform: scale(1.05);
}

.video-card:hover::after {
    opacity: 0.85;
}

.video-play {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 92px;
    height: 92px;
    border-radius: var(--border-radius-full);
    background: rgba(255, 255, 255, 0.88);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.4rem;
    box-shadow: var(--shadow-xl);
    border: none;
    transition: transform var(--transition-base), background var(--transition-base);
}

.video-card:hover .video-play {
    transform: translate(-50%, -50%) scale(1.05);
    background: rgba(255, 255, 255, 0.95);
}

.video-badge {
    position: absolute;
    left: var(--spacing-lg);
    bottom: var(--spacing-lg);
    color: var(--color-text-white);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.video-badge strong {
    font-size: var(--font-size-lg);
}

.promo-meta {
    margin-top: var(--spacing-xl);
    display: grid;
    gap: var(--spacing-lg);
}

.promo-meta li {
    margin: 0;
    color: var(--color-text-light);
}

@media (max-width: 992px) {
    .promo-video {
        grid-template-columns: 1fr;
    }
}

/* ========== 服务卡片 ========== */
.service-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-top: 4px solid var(--color-accent);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-top-color: var(--color-primary);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    display: block;
}

.service-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.service-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-relaxed);
}

.service-link {
    display: inline-block;
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.service-link:hover {
    color: var(--color-primary);
    transform: translateX(4px);
}

/* ========== 优势卡片 ========== */
.advantage-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.advantage-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, var(--color-primary), var(--color-accent));
}

.advantage-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.advantage-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent);
    color: var(--color-text-dark);
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-lg);
}

.advantage-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.advantage-card p {
    color: var(--color-text-light);
    line-height: var(--line-height-relaxed);
}

/* ========== 案例卡片 ========== */
.case-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.case-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.case-card:hover .case-image {
    transform: scale(1.05);
}

.case-content {
    padding: var(--spacing-lg);
}

.case-content h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.case-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
}

/* ========== 统计数据 ========== */
.stat-item {
    text-align: center;
    padding: var(--spacing-2xl);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    display: block;
}

.stat-label {
    font-size: var(--font-size-lg);
    color: var(--color-text-white);
    font-weight: var(--font-weight-semibold);
}

/* ========== 项目追踪 ========== */
.project-tracker {
    display: grid;
    gap: var(--spacing-xl);
}

.tracker-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.tracker-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
}

.tracker-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.tracker-card h4 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

.tracker-progress {
    margin-top: var(--spacing-md);
}

.project-list {
    display: grid;
    gap: var(--spacing-lg);
}

.project-row {
    display: grid;
    grid-template-columns: minmax(0, 2fr) repeat(3, minmax(0, 1fr));
    gap: var(--spacing-lg);
    align-items: center;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
}

.project-row.header {
    background-color: transparent;
    box-shadow: none;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-light);
}

.project-name {
    font-weight: var(--font-weight-semibold);
}

@media (max-width: 992px) {
    .project-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .project-row.header {
        display: none;
    }
}

/* ========== 新闻卡片 ========== */
.news-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border-left: 4px solid var(--color-accent);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--color-primary);
}

.news-date {
    display: inline-block;
    background-color: var(--color-accent);
    color: var(--color-text-dark);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
}

.news-card h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    line-height: var(--line-height-tight);
}

.news-card p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
}

.news-link {
    display: inline-block;
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    transition: all var(--transition-base);
}

.news-link:hover {
    color: var(--color-accent);
    transform: translateX(4px);
}

/* ========== 合作伙伴 ========== */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--spacing-lg);
}

.partner-item {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    min-height: 120px;
}

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

.partner-logo {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-light);
    text-align: center;
}

@media (max-width: 1024px) {
    .partners-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 576px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========== 造价计算器 ========== */
.calculator-card {
    background-color: var(--color-bg-white);
    border-radius: var(--border-radius-2xl);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-2xl);
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-2xl);
    align-items: start;
}

.calculator-form {
    display: grid;
    gap: var(--spacing-lg);
}

.calculator-result {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
    color: var(--color-text-white);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.result-value {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
}

.result-caption {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.85);
    line-height: var(--line-height-relaxed);
}

.calculator-tips {
    background-color: rgba(255, 255, 255, 0.12);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    font-size: var(--font-size-sm);
}

@media (max-width: 992px) {
    .calculator-grid {
        grid-template-columns: 1fr;
    }
}

/* ========== 行动召唤 ========== */
#cta {
    padding: var(--spacing-3xl) var(--spacing-lg);
}

#cta h2 {
    font-size: var(--font-size-h2);
    margin-bottom: var(--spacing-md);
}

#cta p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-2xl);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
}

.cta-buttons .btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: var(--font-size-lg);
}

@media (max-width: 576px) {
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
}

/* ========== 动画效果 ========== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card,
.service-card,
.advantage-card,
.case-card,
.news-card {
    animation: slideInUp 0.6s ease-out forwards;
    opacity: 0;
}

.service-card:nth-child(1) { animation-delay: 0.1s; }
.service-card:nth-child(2) { animation-delay: 0.2s; }
.service-card:nth-child(3) { animation-delay: 0.3s; }
.service-card:nth-child(4) { animation-delay: 0.4s; }

.advantage-card:nth-child(1) { animation-delay: 0.1s; }
.advantage-card:nth-child(2) { animation-delay: 0.2s; }
.advantage-card:nth-child(3) { animation-delay: 0.3s; }
.advantage-card:nth-child(4) { animation-delay: 0.1s; }
.advantage-card:nth-child(5) { animation-delay: 0.2s; }
.advantage-card:nth-child(6) { animation-delay: 0.3s; }

.case-card:nth-child(1) { animation-delay: 0.1s; }
.case-card:nth-child(2) { animation-delay: 0.2s; }
.case-card:nth-child(3) { animation-delay: 0.3s; }

.news-card:nth-child(1) { animation-delay: 0.1s; }
.news-card:nth-child(2) { animation-delay: 0.2s; }
.news-card:nth-child(3) { animation-delay: 0.3s; }