/* ============================================
   贵州思南兴黔船业 - 首页样式（江河远航主题）
   ============================================ */

@import url('variables.css');

/* ========== 指标概览 ========== */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
}

.metric-block {
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    background: linear-gradient(155deg, rgba(0, 8, 64, 0.84), rgba(30, 61, 143, 0.6));
    box-shadow: var(--shadow-floating);
    color: var(--color-text-on-primary);
    position: relative;
    overflow: hidden;
}

.metric-block::after {
    content: '';
    position: absolute;
    inset: -40% -30% auto auto;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(220, 20, 60, 0.28), rgba(220, 20, 60, 0));
    opacity: 0.7;
}

.metric-value {
    font-size: 2.75rem;
    font-weight: var(--font-weight-extrabold);
    margin-bottom: var(--spacing-xs);
}

.metric-caption {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: var(--font-size-xs);
    opacity: 0.7;
}

.metric-description {
    margin-top: var(--spacing-md);
    color: rgba(240, 248, 255, 0.85);
}

/* ========== 产品3D展厅 ========== */
.showroom-stage {
    position: relative;
    margin: var(--spacing-4xl) auto;
    padding: var(--spacing-4xl);
    background: linear-gradient(180deg, rgba(4, 22, 64, 0.92), rgba(12, 30, 64, 0.96));
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-floating);
}

.showroom-stage::before,
.showroom-stage::after {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(240, 248, 255, 0.18), rgba(240, 248, 255, 0));
    border-radius: 50%;
    filter: blur(0);
}

.showroom-stage::before {
    top: -60px;
    left: -60px;
}

.showroom-stage::after {
    bottom: -80px;
    right: -40px;
}

.showroom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.vessel-card {
    position: relative;
    perspective: 1200px;
}

.vessel-card-inner {
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    background: rgba(240, 248, 255, 0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(240, 248, 255, 0.15);
    color: var(--color-text-on-primary);
    transform-style: preserve-3d;
    transform: rotateY(-12deg) rotateX(6deg);
    transition: transform var(--transition-slow), box-shadow var(--transition-slow);
    min-height: 320px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.vessel-card:hover .vessel-card-inner {
    transform: rotateY(0deg) rotateX(0deg) translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.vessel-category {
    font-size: var(--font-size-sm);
    letter-spacing: 0.18em;
    text-transform: uppercase;
    opacity: 0.65;
}

.vessel-title {
    font-size: var(--font-size-h4);
    color: var(--color-text-on-primary);
}

.vessel-meta {
    display: grid;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: rgba(240, 248, 255, 0.78);
}

.vessel-cta {
    margin-top: auto;
}

.orbit-ring {
    position: absolute;
    inset: 20% 10%;
    border: 1px dashed rgba(240, 248, 255, 0.16);
    border-radius: 50%;
    z-index: 1;
}

/* ========== 建造进度展示 ========== */
.progress-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.progress-card {
    border-radius: var(--border-radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.progress-card::after {
    content: '';
    position: absolute;
    inset: auto auto 0 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), #FF6B6B);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--spacing-md);
}

.progress-value {
    font-size: 2rem;
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
}

.progress-track {
    width: 100%;
    height: 10px;
    border-radius: var(--border-radius-full);
    background: rgba(0, 8, 64, 0.1);
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--color-accent), #FF9B7F);
}

.progress-meta {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.milestone-timeline {
    margin-top: var(--spacing-xxl);
    position: relative;
}

.milestone-timeline::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    background: linear-gradient(180deg, rgba(0, 8, 64, 0.18), rgba(0, 8, 64, 0));
    width: 2px;
}

.milestone {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.milestone:last-child {
    margin-bottom: 0;
}

.milestone-marker {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary-light));
    color: var(--color-text-on-primary);
    display: grid;
    place-items: center;
    font-weight: var(--font-weight-bold);
    box-shadow: 0 0 0 6px rgba(0, 8, 64, 0.1);
}

.milestone-content h4 {
    margin-bottom: var(--spacing-xs);
}

.milestone-content span {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ========== 航运资讯 ========== */
.insight-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.insight-card {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background: var(--color-white);
    display: flex;
    flex-direction: column;
}

.insight-image {
    aspect-ratio: 16 / 10;
    background-size: cover;
    background-position: center;
}

.insight-body {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.insight-body h4 {
    margin: 0;
}

.insight-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tag {
    padding: 4px 12px;
    border-radius: var(--border-radius-full);
    background: rgba(0, 8, 64, 0.08);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-secondary);
}

.tag-accent {
    background: rgba(220, 20, 60, 0.12);
    color: var(--color-accent);
}

.insight-footer {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ========== CTA 模块 ========== */
.cta-hub {
    margin-top: var(--spacing-4xl);
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-xl);
}

.cta-card {
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xxl) var(--spacing-xl);
    background: linear-gradient(135deg, rgba(240, 248, 255, 0.95), rgba(194, 208, 236, 0.8));
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.cta-card.dark {
    background: linear-gradient(135deg, rgba(0, 8, 64, 0.88), rgba(30, 61, 143, 0.75));
    color: var(--color-text-on-primary);
}

.cta-card h3 {
    margin-bottom: var(--spacing-md);
}

.cta-card p {
    margin-bottom: var(--spacing-lg);
}

.cta-card.dark p {
    color: rgba(240, 248, 255, 0.82);
}

.cta-card::after {
    content: '';
    position: absolute;
    inset: auto -80px -120px auto;
    width: 240px;
    height: 240px;
    background: radial-gradient(circle, rgba(220, 20, 60, 0.18), rgba(220, 20, 60, 0));
}

/* ========== 响应式调整 ========== */
@media (max-width: 992px) {
    .showroom-stage {
        padding: var(--spacing-3xl);
    }
}

@media (max-width: 768px) {
    .metric-block {
        padding: var(--spacing-lg);
    }

    .hero-video {
        margin-top: var(--spacing-3xl);
    }
}