/* ========================================
   诺臻数芒 - 全局样式表
   婚纱轻奢风 | 纯白 + 香槟金 + 浅紫
   ======================================== */

/* CSS Reset & 基础变量 */
:root {
    --color-white: #ffffff;
    --color-champagne: #d4af37;
    --color-champagne-light: #f4e5c6;
    --color-lavender: #e6e6fa;
    --color-lavender-dark: #b8a8d8;
    --color-text-primary: #2c2c2c;
    --color-text-secondary: #666666;
    --color-bg-light: #fafafa;
    --shadow-soft: 0 4px 20px rgba(212, 175, 55, 0.15);
    --shadow-diagonal: 8px 8px 20px rgba(0, 0, 0, 0.12);
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --font-primary: "Helvetica Neue", Helvetica, Arial, "Microsoft YaHei", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--color-text-primary);
    background-color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-smooth);
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   顶部导航栏
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: transparent;
    transition: var(--transition-smooth);
    padding: 20px 0;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-soft);
    padding: 15px 0;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 45px;
    width: auto;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-champagne);
    letter-spacing: 2px;
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-primary);
    position: relative;
    padding: 8px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-champagne), var(--color-lavender-dark));
    transition: var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--color-champagne);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--color-champagne);
    transition: var(--transition-smooth);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========================================
   对角斜线分割布局
   ======================================== */
.diagonal-section {
    position: relative;
    padding: 100px 0;
    overflow: hidden;
}

.diagonal-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-white) 50%, var(--color-lavender) 50%);
    z-index: -1;
}

.diagonal-section.reverse::before {
    background: linear-gradient(135deg, var(--color-lavender) 50%, var(--color-white) 50%);
}

.diagonal-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 60px;
    align-items: center;
}

.diagonal-card {
    background: var(--color-white);
    padding: 40px;
    border-radius: 4px;
    box-shadow: var(--shadow-diagonal);
    transform: skewY(-2deg);
    transition: var(--transition-smooth);
}

.diagonal-card:hover {
    transform: skewY(-2deg) translateY(-8px);
    box-shadow: 12px 12px 30px rgba(0, 0, 0, 0.18);
}

.diagonal-card > * {
    transform: skewY(2deg);
}

.diagonal-image {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    box-shadow: var(--shadow-diagonal);
}

.diagonal-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.diagonal-image:hover img {
    transform: scale(1.08);
}

/* ========================================
   按钮样式
   ======================================== */
.btn {
    display: inline-block;
    padding: 14px 35px;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-smooth);
    text-transform: uppercase;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-champagne), var(--color-champagne-light));
    color: var(--color-white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-champagne-light), var(--color-champagne));
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-champagne);
    color: var(--color-champagne);
}

.btn-outline:hover {
    background: var(--color-champagne);
    color: var(--color-white);
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
    color: var(--color-white);
    padding: 80px 0 40px;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-bottom: 60px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-champagne);
    margin-bottom: 20px;
}

.footer-desc {
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 25px;
}

.footer-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-champagne);
    margin-bottom: 25px;
    letter-spacing: 1px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #aaa;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--color-champagne);
    padding-left: 8px;
}

.footer-contact p {
    color: #aaa;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
    color: #888;
}

/* ========================================
   动画效果
   ======================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-smooth);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
    .diagonal-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 20px;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--color-white);
        flex-direction: column;
        padding: 40px;
        gap: 25px;
        transition: var(--transition-smooth);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .diagonal-section {
        padding: 60px 0;
    }
    
    .diagonal-card {
        padding: 25px;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        padding: 0 20px;
    }
}

/* ========================================
   通用组件
   ======================================== */
.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-champagne), var(--color-lavender-dark));
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: 4px;
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: var(--transition-smooth);
    border: 1px solid var(--color-lavender);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(212, 175, 55, 0.2);
    border-color: var(--color-champagne);
}

.service-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 25px;
    background: linear-gradient(135deg, var(--color-champagne), var(--color-lavender-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--color-white);
}

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

.service-card p {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* 新闻列表样式 */
.news-list {
    display: grid;
    gap: 25px;
}

.news-item {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 30px;
    padding: 25px;
    background: var(--color-white);
    border-radius: 4px;
    box-shadow: var(--shadow-soft);
    transition: var(--transition-smooth);
    border: 1px solid var(--color-lavender);
}

.news-item:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.18);
    border-color: var(--color-champagne);
}

.news-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 4px;
}

.news-content h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.news-content h3 a:hover {
    color: var(--color-champagne);
}

.news-meta {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

.news-excerpt {
    color: var(--color-text-secondary);
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

@media (max-width: 768px) {
    .news-item {
        grid-template-columns: 1fr;
    }
    
    .news-item img {
        height: 200px;
    }
}

/* ========================================
   Hero 区域样式（内页通用）
   ======================================== */
.hero {
    position: relative;
    min-height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-lavender) 0%, var(--color-white) 100%);
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 10 10 M 0 10 L 10 10" fill="none" stroke="%23d4af37" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 20px;
    max-width: 900px;
}

.hero-title {
    font-size: 56px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 20px;
    letter-spacing: 3px;
    text-shadow: 2px 2px 4px rgba(212, 175, 55, 0.2);
}

.hero-title span {
    color: var(--color-champagne);
    position: relative;
}

.hero-title span::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-champagne), transparent);
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-secondary);
    font-weight: 300;
    letter-spacing: 2px;
    line-height: 1.8;
}

/* 首页 Hero 特殊样式 */
.hero-full {
    min-height: 100vh;
    background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 100%);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.15;
}

.hero-buttons {
    margin-top: 40px;
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* Hero 响应式 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 42px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
}

@media (max-width: 768px) {
    .hero {
        min-height: 40vh;
        padding-top: 100px;
    }
    
    .hero-title {
        font-size: 32px;
        letter-spacing: 1px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 15px;
    }
}