/**
 * 功能导航站 - 浅色清爽风格
 */

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

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --border-hover: #cbd5e1;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --accent: #3b82f6;
    --accent-light: #eff6ff;
    --accent-dark: #2563eb;
    --purple: #8b5cf6;
    --green: #10b981;
    --orange: #f59e0b;
    --red: #ef4444;
    --gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.logo-text { color: var(--text-primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient);
    transition: var(--transition);
    border-radius: 1px;
}

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

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

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.user-avatar:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: var(--gradient);
    color: #fff;
    box-shadow: 0 4px 14px rgba(59,130,246,0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59,130,246,0.5);
}

.btn-outline {
    background: #fff;
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 12px; }

/* 主内容 */
.main-content {
    padding-top: 64px;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Hero */
.hero {
    padding: 80px 0 60px;
    text-align: center;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.hero-title span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 32px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 50px;
}

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

.stat-num {
    font-size: 40px;
    font-weight: 800;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 4px;
}

/* 分类标签 */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.category-tab {
    padding: 10px 22px;
    background: #fff;
    border: 1.5px solid var(--border-color);
    border-radius: 25px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.category-tab:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.category-tab.active {
    background: var(--gradient);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 14px rgba(59,130,246,0.3);
}

/* 网站卡片 */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.site-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.site-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 14px;
}

.site-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent);
    flex-shrink: 0;
}

.site-icon img {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

.site-info { flex: 1; min-width: 0; }

.site-name {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.vip-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    border-radius: 5px;
    font-size: 10px;
    font-weight: 700;
    color: #fff;
}

.site-url {
    font-size: 12px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.site-clicks {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.site-action {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--gradient);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--transition);
}

.site-card:hover .site-action {
    opacity: 1;
    transform: translateX(0);
}

/* 公告栏 */
.notice-bar {
    background: var(--accent-light);
    border: 1px solid rgba(59,130,246,0.2);
    border-radius: var(--radius);
    padding: 16px 24px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.notice-icon {
    width: 38px;
    height: 38px;
    background: var(--gradient);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.notice-content {
    flex: 1;
    font-size: 14px;
    color: var(--text-secondary);
}

.notice-close {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.notice-close:hover {
    background: rgba(0,0,0,0.05);
    color: var(--text-primary);
}

/* 页脚 */
.footer {
    background: #fff;
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
    text-align: center;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 20px;
}

.footer-link { color: var(--text-secondary); font-size: 14px; }
.footer-link:hover { color: var(--accent); }

/* 弹窗 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15,23,42,0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 420px;
    width: 90%;
    transform: scale(0.95) translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-xl);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    text-align: center;
    margin-bottom: 28px;
}

.modal-icon {
    width: 64px;
    height: 64px;
    background: var(--accent-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 28px;
    color: var(--accent);
}

.modal-title { font-size: 22px; font-weight: 700; }
.modal-subtitle { color: var(--text-muted); font-size: 14px; margin-top: 8px; }

/* 表单 */
.form-group { margin-bottom: 20px; }
.form-label { display: block; color: var(--text-secondary); font-size: 14px; margin-bottom: 8px; font-weight: 500; }

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-primary);
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px var(--accent-light);
}

.form-input::placeholder { color: var(--text-muted); }

/* 用户中心 */
.user-panel { padding: 60px 0; }

.user-header {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 40px;
    padding: 32px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.user-avatar-lg {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 700;
    color: #fff;
}

.user-info h2 { font-size: 24px; margin-bottom: 6px; }
.user-email { color: var(--text-muted); font-size: 14px; margin-bottom: 12px; }

.vip-status {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
}

.vip-status.is-vip {
    background: linear-gradient(135deg, rgba(245,158,11,0.1) 0%, rgba(239,68,68,0.1) 100%);
    border: 1px solid rgba(245,158,11,0.3);
    color: var(--orange);
}

.vip-status.not-vip {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
}

.user-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.info-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.info-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.info-card-icon {
    width: 42px;
    height: 42px;
    background: var(--accent-light);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
}

.info-card-title { font-size: 16px; font-weight: 600; }

/* Toast */
.toast {
    position: fixed;
    top: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(-10px);
    padding: 14px 28px;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    z-index: 3000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.toast.success { border-color: var(--green); color: var(--green); }
.toast.error { border-color: var(--red); color: var(--red); }

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-icon { font-size: 64px; margin-bottom: 20px; opacity: 0.3; }
.empty-text { font-size: 16px; }

/* 功能使用页面 */
.use-page {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 9999;
}

.use-header {
    height: 56px;
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.use-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 600;
}

.use-close {
    padding: 8px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.use-close:hover {
    background: var(--red);
    border-color: var(--red);
    color: #fff;
}

.use-frame {
    width: 100%;
    height: calc(100vh - 56px);
    border: none;
}

/* 响应式 */
@media (max-width: 768px) {
    .navbar { padding: 0 20px; }
    .nav-links { display: none; }
    .container { padding: 0 20px; }
    .hero { padding: 50px 0 40px; }
    .hero-title { font-size: 32px; }
    .hero-stats { gap: 30px; flex-wrap: wrap; }
    .stat-num { font-size: 32px; }
    .sites-grid { grid-template-columns: 1fr; }
    .user-header { flex-direction: column; text-align: center; }
}

/* 工具类 */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }
.hidden { display: none !important; }