:root {
    --primary: #0ea5e9;
    --primary-dark: #0284c7;
    --accent: #38bdf8;
    --secondary: #8b5cf6;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;

    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-panel: rgba(15, 23, 42, 0.9);
    --bg-glass: rgba(30, 41, 59, 0.3);

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-light: rgba(255, 255, 255, 0.1);
    --border-medium: rgba(255, 255, 255, 0.15);
    --border-heavy: rgba(255, 255, 255, 0.2);

    --gradient-primary: linear-gradient(135deg, #0ea5e9, #3b82f6);
    --gradient-dark: linear-gradient(135deg, #1e293b, #0f172a);
    --gradient-accent: linear-gradient(135deg, #8b5cf6, #0ea5e9);

    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-primary: 0 0 30px rgba(14, 165, 233, 0.4);
    --shadow-secondary: 0 0 30px rgba(139, 92, 246, 0.3);

    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Microsoft YaHei', sans-serif;
    background: var(--bg-darker);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    display: flex;
    flex-direction: column;
}

/* 背景层 */
.background-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    overflow: hidden;
}

.bg-layer {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url('/static/img/2.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.bg-layer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    opacity: 0.85;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
            linear-gradient(rgba(14, 165, 233, 0.05) 1px, transparent 1px),
            linear-gradient(90deg, rgba(14, 165, 233, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at center, black, transparent 70%);
}

/* 导航栏 */
nav {
    position: sticky;
    top: 20px;
    z-index: 1000;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto 30px;
    padding: 0 30px;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 25px;
    background: var(--bg-glass);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: var(--transition-smooth);
}

.nav-container:hover {
    border-color: var(--border-medium);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

/* Logo优化：变大、保证完整显示 */
.logo {
    height: 80px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    filter: drop-shadow(0 0 15px var(--primary));
    transition: var(--transition-smooth);
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 20px var(--primary));
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 8px 0;
    position: relative;
    transition: var(--transition-smooth);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-smooth);
}

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

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

.nav-link.active {
    color: var(--primary);
}

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

/* 用户菜单优化：头像变大 */
.user-menu-container {
    position: relative;
    margin-left: 10px;
}

.user-avatar {
    width: 54px;
    height: 54px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: var(--gradient-primary);
    padding: 2px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.user-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--bg-darker);
}

.user-avatar:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 15px);
    right: 0;
    width: 280px;
    background: var(--bg-panel);
    backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 15px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-lg);
}

.dropdown-menu.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-info-brief {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 0 20px 15px;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 10px;
}

/* 下拉菜单内的头像同步调大 */
.user-info-brief img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--primary);
    object-fit: cover;
}

.user-info {
    flex: 1;
}

.user-name {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 4px;
}

.user-email {
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 0.75rem;
    color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.menu-item:hover {
    background: rgba(14, 165, 233, 0.1);
    color: var(--text-primary);
    padding-left: 25px;
}

.menu-item i {
    width: 20px;
    text-align: center;
    color: var(--primary);
}

.menu-divider {
    height: 1px;
    background: var(--border-light);
    margin: 8px 0;
}

/* 主内容区域 */
.main-container {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 0 30px 50px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1.8fr 1fr;
    gap: 30px;
    margin-top: 20px;
}

/* 英雄区域 */
.hero-panel {
    position: relative;
    height: 680px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    padding: 40px;
    display: flex;
    align-items: center;
}

.hero-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.hero-panel::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--secondary), transparent);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--primary);
    background: rgba(14, 165, 233, 0.1);
    padding: 6px 15px;
    border-radius: 20px;
    margin-bottom: 25px;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

.hero-title {
    font-size: 4.2rem;
    font-weight: 800;
    line-height: 1;
    margin: 15px 0 25px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 5px 15px rgba(14, 165, 233, 0.3);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
    max-width: 500px;
}

.hero-stats {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
}

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

.stat-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 5px;
}

.hero-actions {
    display: flex;             /* 开启弹盒布局 */
    flex-direction: column;    /* 设置排列方向为垂直（列） */
    gap: 15px;                 /* 设置按钮之间的间距 */
    align-items: flex-start;   /* 按钮靠左对齐（如果要居中改为 center） */
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 35px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(14, 165, 233, 0.6);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 30px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
    transform: translateY(-3px);
}

.ship-illustration {
    position: absolute;
    right: 0;
    bottom: -50px;
    height: 100%;
    z-index: 1;
    filter: drop-shadow(0 0 30px rgba(0, 0, 0, 0.5));
    animation: shipFloat 8s ease-in-out infinite;
}

@keyframes shipFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-20px) rotate(0.5deg); }
    50% { transform: translateY(0) rotate(0deg); }
    75% { transform: translateY(-10px) rotate(-0.5deg); }
}

.ship-glow {
    position: absolute;
    right: 0;
    bottom: 0;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.2) 0%, transparent 70%);
    filter: blur(40px);
    z-index: 0;
}

/* 公告面板 */
.news-panel {
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    height: 680px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.panel-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    color: var(--primary);
    margin: 0;
}

.update-time {
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.news-container {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
}

.news-container::-webkit-scrollbar { width: 4px; }
.news-container::-webkit-scrollbar-track { background: rgba(255, 255, 255, 0.05); border-radius: 2px; }
.news-container::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 2px; }

.news-item {
    display: block;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 15px;
    text-decoration: none;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.news-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition-smooth);
}

.news-item:hover {
    background: rgba(14, 165, 233, 0.08);
    border-color: rgba(14, 165, 233, 0.2);
    transform: translateX(5px);
}

.news-item:hover::before { opacity: 1; }

.news-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.news-tag {
    font-size: 0.7rem;
    padding: 4px 10px;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
}

.tag-event { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.tag-system { background: rgba(14, 165, 233, 0.2); color: var(--primary); }
.tag-fix { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.tag-update { background: rgba(139, 92, 246, 0.2); color: var(--secondary); }

.news-date {
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.news-title {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 8px;
}

.news-excerpt {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 快速访问 */
.quick-access {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.quick-item {
    background: var(--bg-panel);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 25px;
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 15px;
}

.quick-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-primary);
}

.quick-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.quick-content h4 { font-size: 0.9rem; margin-bottom: 5px; }
.quick-content p { font-size: 0.8rem; color: var(--text-secondary); }

/* 页脚优化 - 重塑结构和质感 */
footer {
    margin: 40px auto 0;
    max-width: 1400px;
    width: calc(100% - 60px);
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 25px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.2);
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.server-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--success);
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.status-dot {
    width: 10px;
    height: 10px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s infinite;
    box-shadow: 0 0 10px var(--success);
}

.footer-meta {
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 0.75rem;
    opacity: 0.7;
}

.footer-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-center img {
    height: 80px;
    opacity: 0.3;
    filter: grayscale(1);
    transition: var(--transition-smooth);
}

.footer-center img:hover {
    opacity: 0.8;
    filter: grayscale(0) drop-shadow(0 0 10px var(--primary));
}

.footer-right {
    text-align: right;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-family: 'Inter', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 0.8rem;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .dashboard-grid { grid-template-columns: 1fr; }
    .hero-panel { height: 550px; }
    .hero-title { font-size: 3.5rem; }
    .ship-illustration { height: 100%; right: -100px; }
    footer { flex-direction: column; gap: 20px; text-align: center; }
    .footer-right { text-align: center; }
}

@media (max-width: 768px) {
    nav { padding: 0 15px; }
    .nav-container { flex-direction: column; gap: 15px; padding: 20px; }
    .hero-panel { padding: 30px; height: auto; min-height: 500px; }
    .hero-title { font-size: 2.8rem; }
    .hero-actions { flex-direction: column; align-items: flex-start; }
    .ship-illustration { display: none; }
    .quick-access { grid-template-columns: 1fr; }
}

/* 动画 */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in { animation: fadeInUp 0.8s ease-out forwards; }
.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }
.delay-3 { animation-delay: 0.6s; }