/* ================================
   艾利德律师事务所 - Chen Ran Law Group
   ================================ */

:root {
    --primary-color: #1a365d;
    --secondary-color: #c9a227;
    --accent-color: #2c5282;
    --text-dark: #1a202c;
    --text-light: #4a5568;
    --text-muted: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ================================
   Header & Navigation
   ================================ */
header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-top {
    background: var(--primary-color);
    color: #fff;
    padding: 8px 0;
    font-size: 14px;
}

.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-top a {
    color: #fff;
    text-decoration: none;
    margin-left: 20px;
    transition: var(--transition);
}

.header-top a:hover {
    color: var(--secondary-color);
}

.contact-info span {
    margin-right: 20px;
}

.language-switch a {
    padding: 4px 12px;
    border-radius: 4px;
    background: rgba(255,255,255,0.1);
}

.language-switch a:hover,
.language-switch a.active {
    background: var(--secondary-color);
}

.header-main {
    padding: 15px 0;
}

.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

.logo a:hover {
    opacity: 0.8;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-sub {
    font-size: 12px;
    color: var(--text-muted);
    display: block;
    letter-spacing: 1px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 5px;
}

nav ul li {
    position: relative;
}

nav ul li a {
    display: block;
    padding: 12px 18px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-radius: 4px;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--secondary-color);
    background: var(--bg-light);
}

/* Dropdown Menu */
nav ul li .dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-white);
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    padding: 10px 0;
}

nav ul li:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

nav ul li .dropdown a {
    padding: 10px 20px;
    border-radius: 0;
}

nav ul li .dropdown a:hover {
    background: var(--bg-light);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary-color);
}

/* ================================
   Hero Section
   ================================ */
.hero {
    background: linear-gradient(135deg, rgba(26, 54, 93, 0.85) 0%, rgba(44, 82, 130, 0.85) 100%), url('images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    padding-top: 120px;
    min-height: 500px;
    display: flex;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,192L48,197.3C96,203,192,213,288,229.3C384,245,480,267,576,250.7C672,235,768,181,864,181.3C960,181,1056,235,1152,234.7C1248,235,1344,181,1392,154.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--secondary-color);
    color: #fff;
}

.btn-primary:hover {
    background: #b8911f;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: var(--primary-color);
}

/* ================================
   Features Section
   ================================ */
.features {
    padding: 80px 0;
    background: var(--bg-light);
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    color: var(--text-light);
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 36px;
    color: #fff;
}

.feature-card h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* ================================
   Services Section
   ================================ */
.services {
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
}

.service-card {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: var(--transition);
}

.service-card:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-lg);
}

.service-card h3 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.service-card h3 i {
    color: var(--secondary-color);
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
    margin-bottom: 15px;
}

.service-card a {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.service-card a:hover {
    color: var(--primary-color);
}

/* ================================
   About Section
   ================================ */
.about {
    padding: 80px 0;
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 16px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 42px;
    font-weight: 700;
    color: var(--secondary-color);
    display: block;
}

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

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

/* ================================
   Team Section
   ================================ */
.team {
    padding: 80px 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.team-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.team-photo {
    width: 100%;
    height: 300px;
    object-fit: cover;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.team-info {
    padding: 25px;
    text-align: center;
}

.team-info h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.team-info .position {
    color: var(--secondary-color);
    font-weight: 600;
    margin-bottom: 15px;
    display: block;
}

.team-info p {
    color: var(--text-light);
    font-size: 14px;
}

/* ================================
   CTA Section
   ================================ */
.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: #fff;
    padding: 80px 0;
    text-align: center;
}

.cta h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ================================
   Contact Section
   ================================ */
.contact {
    padding: 80px 0;
    background: var(--bg-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-item i {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.contact-item-text p {
    color: var(--text-light);
    font-size: 15px;
}

.contact-item-text a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item-text a:hover {
    color: var(--secondary-color);
}

.contact-form {
    background: var(--bg-white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ================================
   Footer
   ================================ */
footer {
    background: var(--primary-color);
    color: #fff;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.footer-about p {
    opacity: 0.8;
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--secondary-color);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links ul li a:hover {
    color: var(--secondary-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    opacity: 0.7;
}

.footer-bottom a {
    color: var(--secondary-color);
    text-decoration: none;
}

/* ================================
   Page Headers
   ================================ */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: #fff;
    padding: 150px 0 60px;
    text-align: center;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 15px;
}

.breadcrumb a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: #fff;
}

.breadcrumb span {
    opacity: 0.6;
}

/* ================================
   Service Detail Page
   ================================ */
.service-detail {
    padding: 80px 0;
}

.service-content {
    max-width: 900px;
    margin: 0 auto;
}

.service-content h2 {
    font-size: 28px;
    color: var(--primary-color);
    margin: 40px 0 20px;
}

.service-content h3 {
    font-size: 22px;
    color: var(--accent-color);
    margin: 30px 0 15px;
}

.service-content p {
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 16px;
}

.service-content ul {
    margin: 20px 0;
    padding-left: 25px;
}

.service-content ul li {
    color: var(--text-light);
    margin-bottom: 10px;
    font-size: 16px;
}

.service-sidebar {
    background: var(--bg-light);
    padding: 30px;
    border-radius: 12px;
    margin-top: 40px;
}

.service-sidebar h4 {
    font-size: 20px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.service-sidebar ul {
    list-style: none;
    padding: 0;
}

.service-sidebar ul li {
    margin-bottom: 12px;
}

.service-sidebar ul li a {
    color: var(--text-light);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.service-sidebar ul li a:hover {
    color: var(--secondary-color);
}

/* ================================
   About Page
   ================================ */
.about-page {
    padding: 80px 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.value-card {
    text-align: center;
    padding: 40px 30px;
    background: var(--bg-light);
    border-radius: 12px;
}

.value-card h3 {
    font-size: 22px;
    color: var(--primary-color);
    margin: 20px 0 15px;
}

.value-card p {
    color: var(--text-light);
    font-size: 15px;
}

/* ================================
   Video Section
   ================================ */
.videos {
    padding: 80px 0;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.video-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.video-info {
    padding: 20px;
}

.video-info h3 {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 10px;
    line-height: 1.4;
}

.video-info p {
    color: var(--text-light);
    font-size: 14px;
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .header-top {
        display: none;
    }

    .mobile-menu-toggle {
        display: block;
    }

    nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-white);
        box-shadow: var(--shadow);
        display: none;
    }

    nav.active {
        display: block;
    }

    nav ul {
        flex-direction: column;
        padding: 20px;
    }

    nav ul li .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
        display: none;
    }

    nav ul li:hover .dropdown {
        display: block;
    }

    .hero {
        padding-top: 100px;
        min-height: 400px;
    }

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

    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 16px;
    }

    .section-title h2 {
        font-size: 28px;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .page-header h1 {
        font-size: 32px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 26px;
    }

    .about-stats {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .stat-number {
        font-size: 36px;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        text-align: center;
    }
}