/*
 * 文件名: style.css
 * 描述: 网站主样式文件，实现响应式Grid布局、导航栏和通用组件样式
 */

@import url('variables.css');

/* --- 全局重置与基础样式 --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-main);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color 0.3s;
}

a:hover {
    color: var(--color-primary-light);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

/* --- 布局容器 --- */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

/* --- Grid 布局系统 (响应式) --- */
.grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: var(--spacing-md);
}

/* 桌面端 (>= 1024px) */
@media (min-width: 1024px) {
    .grid-col-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-col-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    .grid-col-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 平板端 (>= 768px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .grid-col-2-md {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-col-3-md {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* --- 头部和固定导航栏 --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

/* 导航栏样式已移至 navigation.css */

/* --- 按钮和通用组件 --- */
.btn-primary {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s;
    text-align: center;
}

.btn-primary:hover {
    background-color: var(--color-primary-light);
    color: var(--color-white);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-block;
    padding-bottom: var(--spacing-xs);
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-accent);
}

/* --- 首页 Hero 区域 --- */
.hero-section {
    position: relative;
    padding: calc(var(--header-height) + var(--spacing-xl)) 0 var(--spacing-xl);
    background: linear-gradient(120deg, rgba(10, 34, 61, 0.85), rgba(26, 74, 126, 0.65)), url('../images/8nFrA7DFVyy0.jpg') center/cover no-repeat;
    color: var(--color-white);
    overflow: hidden;
}

.hero-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.12), transparent 55%),
                radial-gradient(circle at 80% 10%, rgba(255, 102, 0, 0.2), transparent 45%);
    pointer-events: none;
}

.hero-grid {
    position: relative;
    display: grid;
    gap: var(--spacing-xl);
    align-items: center;
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 992px) {
    .hero-grid {
        grid-template-columns: 1.1fr 0.9fr;
    }
}

.hero-content h1 {
    font-size: clamp(2.4rem, 3.4vw + 1rem, 3.8rem);
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.hero-content p {
    font-size: 1.1rem;
    max-width: 520px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-lg);
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xxs);
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 999px;
    font-size: 0.85rem;
    letter-spacing: 0.02em;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.btn-secondary {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--border-radius-sm);
    color: var(--color-white);
    transition: all 0.3s;
}

.btn-secondary:hover {
    border-color: var(--color-white);
    background: rgba(255, 255, 255, 0.12);
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.hero-stat {
    background: rgba(0, 0, 0, 0.25);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat strong {
    display: block;
    font-size: 1.8rem;
    color: var(--color-white);
}

.hero-stat span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
}

.hero-visual {
    position: relative;
    min-height: 320px;
}

.building-scene {
    position: relative;
    width: 100%;
    max-width: 340px;
    height: 320px;
    margin-left: auto;
    margin-right: auto;
    perspective: 900px;
}

.building {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 160px;
    height: 220px;
    transform-style: preserve-3d;
    transform: translate(-50%, -60%) rotateX(-8deg) rotateY(18deg);
    animation: building-rotate 12s ease-in-out infinite alternate;
}

.building.small {
    width: 120px;
    height: 160px;
    transform: translate(-10%, -30%) rotateX(-6deg) rotateY(-12deg);
    animation-duration: 10s;
}

.building .face {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(17, 51, 92, 0.85));
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: inset 0 0 20px rgba(18, 52, 91, 0.4);
}

.building .face::after {
    content: '';
    position: absolute;
    inset: 14px;
    border: 1px solid rgba(10, 34, 61, 0.15);
    box-shadow: 0 0 12px rgba(10, 34, 61, 0.18) inset;
}

.building .face.front  { transform: translateZ(56px); }
.building .face.back   { transform: rotateY(180deg) translateZ(56px); }
.building .face.left   { transform: rotateY(-90deg) translateZ(56px); }
.building .face.right  { transform: rotateY(90deg) translateZ(56px); }
.building .face.top    { transform: rotateX(90deg) translateZ(164px); background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(26,74,126,0.65)); }
.building .face.bottom { transform: rotateX(-90deg) translateZ(0); background: rgba(5, 19, 33, 0.35); }

.building.small .face.front,
.building.small .face.back,
.building.small .face.left,
.building.small .face.right {
    transform: translateZ(42px);
}

.glow-ring {
    position: absolute;
    left: 50%;
    top: 60%;
    width: 240px;
    height: 240px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 102, 0, 0.35), transparent 60%);
    transform: translate(-50%, -50%) rotateX(82deg);
    filter: blur(6px);
    animation: ring-pulse 6s ease-in-out infinite;
}

.hero-diagnostics {
    position: absolute;
    right: 10%;
    bottom: 12%;
    background: rgba(10, 34, 61, 0.85);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-white);
    box-shadow: 0 12px 30px rgba(6, 17, 29, 0.45);
    border: 1px solid rgba(255, 255, 255, 0.12);
    display: grid;
    gap: var(--spacing-xxs);
    font-size: 0.85rem;
    max-width: 240px;
}

.hero-diagnostics strong {
    color: var(--color-accent);
    font-size: 1rem;
}

@keyframes building-rotate {
    0% {
        transform: translate(-50%, -60%) rotateX(-6deg) rotateY(12deg);
    }
    100% {
        transform: translate(-40%, -55%) rotateX(-14deg) rotateY(28deg);
    }
}

@keyframes ring-pulse {
    0%, 100% {
        transform: translate(-50%, -50%) rotateX(82deg) scale(0.95);
        opacity: 0.8;
    }
    50% {
        transform: translate(-50%, -50%) rotateX(82deg) scale(1.05);
        opacity: 1;
    }
}

/* --- 核心业务区块 --- */
.services-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

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

.service-card {
    background: linear-gradient(160deg, rgba(255, 255, 255, 0.92), rgba(240, 246, 255, 0.92));
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(26, 74, 126, 0.08);
    display: grid;
    gap: var(--spacing-sm);
}

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

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

.service-card i {
    font-size: 2rem;
    color: var(--color-accent);
}

.service-card h3 {
    color: var(--color-primary);
    font-size: 1.2rem;
}

.service-card p {
    color: var(--color-dark-gray);
    font-size: 0.95rem;
    line-height: 1.6;
}

.service-card a {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

/* --- 项目进度能力 --- */
.progress-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, rgba(12, 38, 68, 0.95), rgba(34, 87, 144, 0.9));
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.progress-section::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 15% 15%, rgba(255, 102, 0, 0.18), transparent 50%),
                radial-gradient(circle at 80% 30%, rgba(255, 255, 255, 0.12), transparent 55%);
    pointer-events: none;
}

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

.progress-card {
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 12px 30px rgba(2, 10, 18, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: grid;
    gap: var(--spacing-sm);
}

.progress-card h3 {
    color: var(--color-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
}

.progress-bar {
    position: relative;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 999px;
    height: 8px;
    overflow: hidden;
}

.progress-bar-fill {
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 0;
    background: linear-gradient(90deg, var(--color-accent), #ffaa66);
    border-radius: inherit;
    transition: width 1.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-card p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
    line-height: 1.6;
}

.progress-matrix {
    display: grid;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.progress-matrix li {
    list-style: none;
    display: flex;
    justify-content: space-between;
    color: rgba(255, 255, 255, 0.75);
    font-size: 0.9rem;
}

.progress-matrix strong {
    color: var(--color-white);
}

/* --- 数字化管控实验室 --- */
.digital-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.digital-wrapper {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    align-items: center;
}

.digital-card {
    background: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border-top: 4px solid var(--color-accent);
}

.digital-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.digital-card p {
    color: var(--color-dark-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.digital-list {
    display: grid;
    gap: var(--spacing-sm);
}

.digital-list li {
    list-style: none;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    color: var(--color-dark-gray);
}

.digital-list i {
    color: var(--color-accent);
    margin-top: 4px;
}

/* --- 精品案例 --- */
.cases-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
}

.case-card {
    position: relative;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    min-height: 260px;
    color: var(--color-white);
    display: flex;
    align-items: flex-end;
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.case-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(11, 28, 48, 0) 10%, rgba(5, 14, 27, 0.88) 90%);
    transition: opacity 0.3s ease;
}

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

.case-card:hover::after {
    opacity: 0.92;
}

.case-card-content {
    position: relative;
    z-index: 1;
    padding: var(--spacing-lg) var(--spacing-md);
    width: 100%;
}

.case-card span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.18);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.02em;
}

.case-card h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-white);
}

.case-card p {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.78);
}

/* --- 新闻资讯 --- */
.news-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-light-gray);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.news-card {
    background: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    display: grid;
    gap: var(--spacing-xs);
    border-left: 4px solid var(--color-primary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.news-card time {
    font-size: 0.8rem;
    color: var(--color-dark-gray);
    letter-spacing: 0.02em;
}

.news-card h3 {
    color: var(--color-primary);
    font-size: 1.1rem;
}

.news-card p {
    color: var(--color-dark-gray);
    font-size: 0.9rem;
    line-height: 1.6;
}

.news-card a {
    font-weight: 600;
    color: var(--color-accent);
    font-size: 0.9rem;
}

/* --- CTA --- */
.cta-section {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, rgba(12, 38, 68, 0.95), rgba(34, 87, 144, 0.92));
    color: var(--color-white);
    text-align: center;
}

.cta-section h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.cta-section p {
    margin-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.8);
}

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

.cta-actions .btn-secondary {
    border-color: rgba(255, 255, 255, 0.4);
}

/* --- 响应式适配 --- */
@media (max-width: 991px) {
    .hero-diagnostics {
        display: none;
    }
}

@media (max-width: 767px) {
    .hero-section {
        padding: calc(var(--header-height) + var(--spacing-lg)) 0 var(--spacing-lg);
    }

    .hero-actions {
        width: 100%;
    }

    .hero-actions a {
        flex: 1;
        text-align: center;
    }

    .hero-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .building-scene {
        height: 260px;
    }

    .cta-section {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
}

/* --- 底部样式 --- */
.footer {
    background-color: var(--color-primary-dark);
    color: var(--color-light-gray);
    padding: var(--spacing-xl) 0;
    font-size: 0.9rem;
}

.footer a {
    color: var(--color-light-gray);
}

.footer a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* --- 响应式调整 (移动端) --- */
@media (max-width: 767px) {
    .nav-menu {
        display: none; /* 默认隐藏菜单 */
        flex-direction: column;
        position: absolute;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--color-white);
        box-shadow: var(--shadow-md);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-item {
        padding: 0;
        border-bottom: 1px solid var(--color-light-gray);
    }

    .nav-item > a {
        line-height: normal;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .dropdown-menu {
        position: static; /* 移动端下拉菜单内联显示 */
        box-shadow: none;
        border-top: none;
        padding-left: var(--spacing-md);
    }

    .menu-toggle {
        display: block;
        cursor: pointer;
        font-size: 1.5rem;
        padding: var(--spacing-xs);
    }
}