/* ==========================================
   重庆市璧山区摄影家协会 - 全局样式
   ========================================== */

/* CSS 变量 */
:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #c4a35a;
    --color-accent-dark: #a8893a;
    --color-accent-light: #e8d5a3;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-bg: #ffffff;
    --color-bg-light: #f8f8f8;
    --color-bg-dark: #0a0a14;
    --color-border: #e5e5e5;
    --color-border-light: #f0f0f0;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --font-cn: 'Noto Serif SC', 'Source Han Serif CN', 'SimSun', serif;
    --font-sans: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
    --max-width: 1200px;
    --header-height: 72px;
    --transition: all 0.3s ease;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent-dark); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent); }

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

ul, ol { list-style: none; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

/* ========== 顶部导航 ========== */
.site-header {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--header-height);
    background: rgba(10, 10, 20, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(196, 163, 90, 0.15);
    transition: var(--transition);
}

.site-header.scrolled {
    background: rgba(10, 10, 20, 0.98);
    box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
    max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
    height: 100%; display: flex; align-items: center; justify-content: space-between;
}

.site-logo {
    display: flex; align-items: center; gap: 12px; color: #fff;
}

.site-logo .logo-img {
    height: 44px; width: auto; flex-shrink: 0;
    filter: brightness(0) invert(1);
    opacity: 0.92;
    transition: opacity 0.3s;
}
.site-logo .logo-img:hover {
    opacity: 1;
}

.site-logo .logo-icon {
    width: 40px; height: 40px; border-radius: 50%;
    border: 2px solid var(--color-accent);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-family: var(--font-cn); color: var(--color-accent);
}

.site-logo .logo-text {
    font-family: var(--font-cn); font-size: 18px; font-weight: 700;
    letter-spacing: 2px;
}

.site-logo .logo-text small {
    display: block; font-size: 11px; font-weight: 400;
    letter-spacing: 1px; color: var(--color-accent-light); opacity: 0.7;
}

.site-nav { display: flex; gap: 0; align-items: center; }

.site-nav a {
    color: rgba(255,255,255,0.8); padding: 8px 20px; font-size: 15px;
    letter-spacing: 1px; position: relative; transition: var(--transition);
}

.site-nav a:hover, .site-nav a.active {
    color: var(--color-accent);
}

.site-nav a::after {
    content: ''; position: absolute; bottom: 0; left: 50%; width: 0; height: 2px;
    background: var(--color-accent); transform: translateX(-50%);
    transition: width 0.3s ease;
}

.site-nav a:hover::after, .site-nav a.active::after {
    width: 60%;
}

/* 移动端菜单 */
.mobile-toggle { display: none; background: none; border: none; color: #fff;
    font-size: 24px; cursor: pointer; padding: 8px; }

@media (max-width: 768px) {
    .mobile-toggle { display: block; }
    .site-nav {
        position: fixed; top: var(--header-height); left: 0; right: 0;
        background: rgba(10,10,20,0.98); flex-direction: column;
        padding: 20px 0; transform: translateY(-100%); opacity: 0;
        transition: all 0.3s ease; pointer-events: none;
    }
    .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: all; }
    .site-nav a { padding: 12px 30px; width: 100%; text-align: center; }
}

/* ========== Hero 轮播 ========== */
.hero-banner {
    position: relative; height: 100vh; min-height: 600px;
    overflow: hidden; margin-top: 0;
}

.hero-slides { position: relative; width: 100%; height: 100%; }

.hero-slide {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0; transition: opacity 1.2s ease;
    background-size: cover; background-position: center;
}

.hero-slide.active { opacity: 1; }

.hero-slide::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to bottom,
        rgba(10,10,20,0.3) 0%,
        rgba(10,10,20,0.1) 40%,
        rgba(10,10,20,0.5) 80%,
        rgba(10,10,20,0.8) 100%
    );
}

.hero-content {
    position: absolute; bottom: 15%; left: 50%; transform: translateX(-50%);
    text-align: center; z-index: 2; width: 90%; max-width: 800px;
}

.hero-content h1 {
    font-family: var(--font-cn); font-size: clamp(28px, 5vw, 52px);
    color: #fff; letter-spacing: 6px; margin-bottom: 16px;
    text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}

.hero-content p {
    color: rgba(255,255,255,0.8); font-size: clamp(14px, 2vw, 18px);
    letter-spacing: 3px; margin-bottom: 30px;
}

.hero-content .hero-btn {
    display: inline-block; padding: 12px 40px;
    background: var(--color-accent); color: var(--color-primary);
    font-size: 15px; font-weight: 600; letter-spacing: 2px;
    border: none; cursor: pointer; transition: var(--transition);
}

.hero-content .hero-btn:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196,163,90,0.4);
}

.hero-indicators {
    position: absolute; bottom: 5%; left: 50%; transform: translateX(-50%);
    display: flex; gap: 10px; z-index: 3;
}

.hero-indicators span {
    width: 40px; height: 3px; background: rgba(255,255,255,0.3);
    cursor: pointer; transition: var(--transition);
}

.hero-indicators span.active { background: var(--color-accent); width: 60px; }

/* ========== 栏目标题 ========== */
.section-title {
    text-align: center; margin-bottom: 50px; padding-top: 60px;
}

.section-title h2 {
    font-family: var(--font-cn); font-size: 30px; font-weight: 700;
    color: var(--color-primary); letter-spacing: 4px; margin-bottom: 10px;
}

.section-title .title-line {
    width: 50px; height: 3px; background: var(--color-accent);
    margin: 16px auto 12px;
}

.section-title p {
    color: var(--color-text-muted); font-size: 14px; letter-spacing: 2px;
}

/* ========== 资讯卡片 ========== */
.news-section, .events-section {
    padding: 80px 0; background: var(--color-bg-light);
}

.card-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 30px;
}

.news-card, .event-card {
    background: #fff; border-radius: var(--radius-md);
    overflow: hidden; box-shadow: var(--shadow-sm);
    transition: var(--transition); cursor: pointer;
}

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

.card-image {
    position: relative; height: 220px; overflow: hidden;
    background: #eee;
}

.card-image img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.6s ease;
}

.news-card:hover .card-image img,
.event-card:hover .card-image img {
    transform: scale(1.08);
}

.card-image .card-date {
    position: absolute; top: 12px; left: 12px;
    background: var(--color-accent); color: var(--color-primary);
    padding: 6px 14px; font-size: 13px; font-weight: 600;
    letter-spacing: 1px;
}

.card-body { padding: 20px 24px; }

.card-body h3 {
    font-family: var(--font-cn); font-size: 18px; font-weight: 600;
    color: var(--color-primary); margin-bottom: 10px;
    line-height: 1.5; letter-spacing: 1px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-body h3 a { color: var(--color-primary); }
.card-body h3 a:hover { color: var(--color-accent-dark); }

.card-body .card-summary {
    color: var(--color-text-light); font-size: 14px; line-height: 1.7;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    overflow: hidden; margin-bottom: 12px;
}

.card-body .card-meta {
    display: flex; justify-content: space-between; align-items: center;
    font-size: 13px; color: var(--color-text-muted);
}

.card-body .card-category {
    color: var(--color-accent-dark); font-weight: 500;
}

/* ========== 精选作品 ========== */
.works-section {
    padding: 80px 0; background: var(--color-bg-dark);
}

.works-section .section-title h2 { color: #fff; }
.works-section .section-title p { color: rgba(255,255,255,0.5); }

.works-masonry {
    columns: 4; column-gap: 16px;
}

.works-masonry .work-item {
    break-inside: avoid; margin-bottom: 16px;
    position: relative; overflow: hidden; border-radius: var(--radius-sm);
    cursor: pointer;
}

.works-masonry .work-item img {
    width: 100%; display: block;
    transition: transform 0.6s ease;
}

.works-masonry .work-item:hover img {
    transform: scale(1.05);
}

.works-masonry .work-item .work-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
    opacity: 0; transition: opacity 0.3s ease;
    display: flex; align-items: flex-end; padding: 16px;
}

.works-masonry .work-item:hover .work-overlay { opacity: 1; }

.work-overlay .work-info h4 {
    color: #fff; font-size: 15px; font-weight: 500; margin-bottom: 4px;
}

.work-overlay .work-info span {
    color: var(--color-accent-light); font-size: 13px;
}

@media (max-width: 1024px) { .works-masonry { columns: 3; } }
@media (max-width: 768px) { .works-masonry { columns: 2; } }
@media (max-width: 480px) { .works-masonry { columns: 1; } }

/* ========== 快捷入口 ========== */
.quick-links {
    padding: 80px 0; background: var(--color-bg);
}

.quick-links-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}

.quick-link-item {
    text-align: center; padding: 40px 20px;
    background: var(--color-bg-light); border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: var(--transition); cursor: pointer;
}

.quick-link-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.quick-link-item .link-icon {
    width: 60px; height: 60px; margin: 0 auto 16px;
    background: var(--color-primary); border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px; color: var(--color-accent);
}

.quick-link-item h3 {
    font-family: var(--font-cn); font-size: 18px;
    color: var(--color-primary); margin-bottom: 8px;
    letter-spacing: 2px;
}

.quick-link-item p {
    color: var(--color-text-muted); font-size: 13px;
}

@media (max-width: 768px) {
    .quick-links-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========== 底部 ========== */
.site-footer {
    background: var(--color-primary); color: rgba(255,255,255,0.7);
    padding: 60px 0 0;
}

.footer-main {
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    gap: 40px; padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand h3 {
    font-family: var(--font-cn); color: #fff; font-size: 20px;
    letter-spacing: 3px; margin-bottom: 12px;
}

.footer-brand p { font-size: 14px; line-height: 1.8; margin-bottom: 16px; }

.footer-brand .footer-contact { font-size: 14px; }
.footer-brand .footer-contact p { margin-bottom: 6px; }

.footer-col h4 {
    color: var(--color-accent); font-size: 15px; letter-spacing: 2px;
    margin-bottom: 16px; font-weight: 600;
}

.footer-col a {
    display: block; color: rgba(255,255,255,0.6); font-size: 14px;
    padding: 4px 0;
}

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

.footer-qr { margin-top: 16px; text-align: left; }
.footer-qr img { width: 100px; height: 100px; display: block; border: 2px solid #fff; }
.footer-qr p { color: rgba(255,255,255,0.6); font-size: 12px; margin-top: 6px; }

.footer-bottom {
    text-align: center; padding: 20px 0; font-size: 13px;
    color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); text-decoration: none; transition: color 0.2s; }
.footer-bottom a:hover { color: rgba(255,255,255,0.8); }
.footer-filing { margin-bottom: 6px; }
.footer-tech { font-size: 12px; }
.beian-icon { width: 14px; height: 14px; vertical-align: -2px; margin-right: 3px; display: inline-block; }

@media (max-width: 768px) {
    .footer-main { grid-template-columns: 1fr; }
    .footer-qr img { width: 90px; height: 90px; }
}

/* ========== 页面通用 ========== */
.page-header {
    background: var(--color-primary);
    padding: calc(var(--header-height) + 50px) 0 50px;
    text-align: center;
}

.page-header h1 {
    font-family: var(--font-cn); color: #fff; font-size: 32px;
    letter-spacing: 4px; margin-bottom: 10px;
}

.page-header .breadcrumb {
    color: rgba(255,255,255,0.5); font-size: 14px;
}

.page-header .breadcrumb a { color: var(--color-accent-light); }

.page-content { padding: 50px 0; min-height: 50vh; }

/* 列表页 */
.filter-bar {
    display: flex; gap: 12px; margin-bottom: 30px; flex-wrap: wrap;
    padding-bottom: 20px; border-bottom: 1px solid var(--color-border-light);
}

.filter-bar a {
    padding: 6px 18px; border-radius: 20px; font-size: 14px;
    border: 1px solid var(--color-border); color: var(--color-text-light);
}

.filter-bar a:hover, .filter-bar a.active {
    background: var(--color-accent); color: var(--color-primary);
    border-color: var(--color-accent);
}

.pagination {
    display: flex; justify-content: center; gap: 8px;
    margin-top: 40px;
}

.pagination a, .pagination span {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    font-size: 14px; border: 1px solid var(--color-border);
}

.pagination a:hover { border-color: var(--color-accent); color: var(--color-accent-dark); }
.pagination .current {
    background: var(--color-accent); color: var(--color-primary);
    border-color: var(--color-accent); font-weight: 600;
}

/* 详情页 */
.detail-article { max-width: 800px; margin: 0 auto; }

.detail-article .detail-meta {
    display: flex; gap: 20px; margin-bottom: 30px;
    font-size: 14px; color: var(--color-text-muted);
    padding-bottom: 20px; border-bottom: 1px solid var(--color-border-light);
}

.detail-article .detail-content {
    font-size: 16px; line-height: 2; color: var(--color-text);
}

.detail-article .detail-content p { margin-bottom: 18px; }
.detail-article .detail-content img { border-radius: var(--radius-sm); margin: 20px 0; }

.detail-article .detail-cover {
    width: 100%; border-radius: var(--radius-md);
    margin-bottom: 30px; box-shadow: var(--shadow-md);
}

/* 入会表单 */
.join-form {
    max-width: 700px; margin: 0 auto;
    background: #fff; padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

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

.form-group label {
    display: block; font-size: 14px; font-weight: 600;
    color: var(--color-primary); margin-bottom: 8px;
    letter-spacing: 1px;
}

.form-group label .required { color: #e74c3c; }

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%; padding: 10px 16px; border: 1px solid var(--color-border);
    border-radius: var(--radius-sm); font-size: 15px;
    font-family: var(--font-sans); transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none; border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(196,163,90,0.15);
}

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

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

@media (max-width: 600px) {
    .form-row { grid-template-columns: 1fr; }
}

.btn-submit {
    display: inline-block; padding: 12px 50px;
    background: var(--color-accent); color: var(--color-primary);
    border: none; border-radius: var(--radius-sm);
    font-size: 16px; font-weight: 600; letter-spacing: 2px;
    cursor: pointer; transition: var(--transition);
}

.btn-submit:hover {
    background: var(--color-accent-dark);
    color: #fff; transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 消息提示 */
.alert {
    padding: 14px 20px; border-radius: var(--radius-sm);
    margin-bottom: 20px; font-size: 14px;
}

.alert-success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.alert-error { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.alert-info { background: #d1ecf1; color: #0c5460; border: 1px solid #bee5eb; }

/* 灯箱 */
.lightbox {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.95); display: none;
    align-items: center; justify-content: center;
}

.lightbox.active { display: flex; }

.lightbox img {
    max-width: 90vw; max-height: 90vh; object-fit: contain;
}

.lightbox .lightbox-close {
    position: absolute; top: 20px; right: 30px;
    color: #fff; font-size: 36px; cursor: pointer;
    background: none; border: none; z-index: 10;
}

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

.animate-in { animation: fadeInUp 0.6s ease forwards; }