/* ===== 全局重置 & 基础 ===== */
:root {
    --primary-start: #1a1a2e;
    --primary-mid: #16213e;
    --primary-end: #0f3460;
    --accent-start: #e94560;
    --accent-end: #f5a623;
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --bg-body: #f1f5f9;
    --bg-card: #ffffff;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.06), 0 2px 4px -1px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.08), 0 4px 6px -2px rgba(0,0,0,0.02);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 24px;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: linear-gradient(180deg, var(--accent-start), var(--accent-end)); border-radius: 4px; }

::selection { background: var(--accent-start); color: #fff; }

/* ===== 顶部导航 (Header) ===== */
header {
    position: relative;
    background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-mid) 40%, var(--primary-end) 100%);
    color: #fff;
    padding: 40px 0 30px;
}
header .container {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
}
header h1 {
    font-size: 32px; font-weight: 800; letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 60%, var(--accent-end));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.header-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.header-actions a {
    color: rgba(255,255,255,0.85); text-decoration: none; padding: 8px 20px;
    border-radius: 50px; background: rgba(255,255,255,0.10); backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.08); transition: var(--transition); font-size: 13px; font-weight: 500;
}
.header-actions a:hover { background: rgba(255,255,255,0.20); color: #fff; transform: translateY(-2px); }
.header-actions .btn-logout { background: rgba(233, 69, 96, 0.25); border-color: rgba(233, 69, 96, 0.2); }
.header-actions .btn-logout:hover { background: rgba(233, 69, 96, 0.4); }

/* ===== 分类标题 ===== */
.category-section { margin-top: 30px; }
.category-section h2 {
    font-size: 18px; font-weight: 700; color: var(--text-primary);
    margin-bottom: 12px; display: flex; align-items: center; gap: 8px;
}
.category-section h2::after {
    content: ''; flex: 1; height: 1px; background: linear-gradient(90deg, #e2e8f0, transparent);
}

/* ===== 导航卡片网格 (横向布局) ===== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.site-card {
    background: var(--bg-card);
    padding: 8px 12px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(0,0,0,0.02);
    position: relative;
    overflow: hidden;
}

.site-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(233, 69, 96, 0.12);
    background: #ffffff;
}

.site-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 2px; background: linear-gradient(90deg, var(--accent-start), var(--accent-end));
    opacity: 0; transition: var(--transition);
}
.site-card:hover::before { opacity: 1; }

.site-card .site-icon {
    width: 32px; height: 32px; flex-shrink: 0;
    object-fit: contain; border-radius: var(--radius-sm); background: #f8fafc; padding: 2px;
}
.site-card .site-icon-placeholder {
    width: 32px; height: 32px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: bold; background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: #fff; border-radius: var(--radius-sm);
}

.site-card h3 {
    font-size: 16px; font-weight: 600; color: var(--text-primary);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}

/* ===== 后台管理页样式 ===== */
.admin-section {
    background: var(--bg-card); padding: 24px 28px;
    border-radius: var(--radius-lg); box-shadow: var(--shadow-md); margin-bottom: 28px;
    border: 1px solid rgba(0,0,0,0.02);
}
.admin-section h2 { font-size: 20px; font-weight: 700; margin-bottom: 20px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.admin-section .section-desc { font-size: 14px; font-weight: normal; color: var(--text-light); }

/* 后台表单 */
.add-form .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.add-form .form-group { margin-bottom: 14px; }
.add-form label { display: block; font-weight: 600; font-size: 13px; color: var(--text-secondary); margin-bottom: 5px; }
.add-form input[type="text"], .add-form input[type="url"] {
    width: 100%; padding: 10px 14px; border: 1px solid #e2e8f0; border-radius: var(--radius-sm);
    font-size: 14px; transition: var(--transition); background: #f8fafc;
}
.add-form input:focus { border-color: var(--accent-start); outline: none; background: #fff; box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.08); }

/* 后台按钮 */
.btn-primary {
    padding: 10px 28px; background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
    color: #fff; border: none; border-radius: var(--radius-sm); font-size: 14px; font-weight: 600;
    cursor: pointer; transition: var(--transition);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(233, 69, 96, 0.35); }

.btn-secondary {
    padding: 8px 20px; background: #e2e8f0; color: var(--text-secondary);
    border: none; border-radius: var(--radius-sm); font-size: 13px; font-weight: 600;
    cursor: pointer; transition: var(--transition);
}
.btn-secondary:hover { background: #cbd5e1; transform: translateY(-1px); }

.btn-edit {
    padding: 4px 14px; background: #e0f2fe; color: #0284c7;
    border: 1px solid #bae6fd; border-radius: 50px; text-decoration: none;
    cursor: pointer; font-size: 12px; font-weight: 500; transition: var(--transition);
    display: inline-block;
}
.btn-edit:hover { background: #bae6fd; transform: scale(1.05); }

.btn-delete {
    padding: 4px 14px; background: #fef2f2; color: #dc2626;
    border: 1px solid #fecaca; border-radius: 50px; cursor: pointer;
    font-size: 12px; font-weight: 500; transition: var(--transition);
}
.btn-delete:hover { background: #fee2e2; transform: scale(1.05); }

.btn-save {
    padding: 4px 14px; background: #dcfce7; color: #16a34a;
    border: 1px solid #bbf7d0; border-radius: 50px; cursor: pointer;
    font-size: 12px; font-weight: 500; transition: var(--transition);
}
.btn-save:hover { background: #bbf7d0; transform: scale(1.05); }

.btn-cancel {
    padding: 4px 14px; background: #f1f5f9; color: var(--text-secondary);
    border: 1px solid #e2e8f0; border-radius: 50px; cursor: pointer;
    font-size: 12px; font-weight: 500; transition: var(--transition);
}
.btn-cancel:hover { background: #e2e8f0; }

/* 后台表格 */
.sites-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.sites-table th {
    text-align: left; padding: 12px 10px; background: #f8fafc;
    border-bottom: 2px solid #e2e8f0; font-weight: 600; color: var(--text-secondary); font-size: 12px;
}
.sites-table td { padding: 12px 10px; border-bottom: 1px solid #f1f5f9; vertical-align: middle; }
.sites-table tr:hover { background: #f8fafc; }

.table-icon { width: 24px; height: 24px; object-fit: contain; border-radius: 4px; background: #f8fafc; display: block; }
.table-icon-placeholder {
    display: inline-flex; align-items: center; justify-content: center;
    width: 24px; height: 24px; background: #e2e8f0; border-radius: 4px;
    font-size: 10px; font-weight: bold; color: #64748b;
}

/* 排序输入框 */
.sort-input { width: 46px; padding: 4px; border: 1px solid #e2e8f0; border-radius: 4px; text-align: center; font-size: 13px; background: #f8fafc; transition: var(--transition); }
.sort-input:focus { border-color: var(--accent-start); outline: none; background: #fff; }
.btn-sort-update { padding: 4px 10px; font-size: 11px; font-weight: 600; background: #6366f1; color: #fff; border: none; border-radius: 4px; cursor: pointer; transition: var(--transition); }
.btn-sort-update:hover { background: #4f46e5; }

/* ===== 分类管理 ===== */
.category-list {
    display: flex; flex-direction: column; gap: 8px;
}
.category-item {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px; background: #f8fafc; border-radius: var(--radius-sm);
    border: 1px solid #e2e8f0; transition: var(--transition);
}
.category-item:hover { background: #f1f5f9; }
.category-item .cat-name { font-weight: 600; min-width: 120px; }
.category-item .cat-tag { font-size: 11px; background: #e2e8f0; padding: 1px 10px; border-radius: 50px; color: var(--text-secondary); }
.category-item .cat-actions { margin-left: auto; display: flex; gap: 6px; }
.category-item .sort-controls { display: flex; align-items: center; gap: 4px; }
.category-item .sort-controls input { width: 50px; padding: 4px 6px; border: 1px solid #e2e8f0; border-radius: 4px; text-align: center; font-size: 13px; }
.category-item .sort-controls input:focus { border-color: var(--accent-start); outline: none; }

/* 分类表单 */
.category-form-row { display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap; }
.category-form-row .form-group { flex: 1; min-width: 150px; margin-bottom: 0; }
.category-form-row .form-group label { font-size: 12px; }
.category-form-row .form-group input { width: 100%; padding: 8px 12px; border: 1px solid #e2e8f0; border-radius: var(--radius-sm); font-size: 14px; background: #f8fafc; }
.category-form-row .form-group input:focus { border-color: var(--accent-start); outline: none; background: #fff; }
.category-form-row .btn-primary { padding: 8px 24px; }

/* ===== 编辑站点弹窗/行内编辑 ===== */
.edit-row td { background: #f0fdf4 !important; }
.edit-row .edit-form { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.edit-row .edit-form input[type="text"],
.edit-row .edit-form input[type="url"] {
    padding: 6px 10px; border: 1px solid #e2e8f0; border-radius: 4px; font-size: 13px;
    background: #fff; min-width: 100px; flex: 1;
}
.edit-row .edit-form input:focus { border-color: var(--accent-start); outline: none; }
.edit-row .edit-form .edit-actions { display: flex; gap: 4px; }

/* ===== 登录页面 ===== */
.login-container { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, var(--primary-start) 0%, var(--primary-mid) 50%, var(--primary-end) 100%); }
.login-box { background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); padding: 40px; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; max-width: 400px; }
.login-box h2 { text-align: center; font-size: 24px; margin-bottom: 4px; }
.login-hint { text-align: center; color: var(--text-light); font-size: 14px; margin-bottom: 24px; }
.login-box .form-group { margin-bottom: 18px; }
.login-box label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.login-box input { width: 100%; padding: 10px 14px; border: 1px solid #e2e8f0; border-radius: var(--radius-sm); font-size: 14px; transition: var(--transition); }
.login-box input:focus { border-color: var(--accent-start); outline: none; box-shadow: 0 0 0 3px rgba(233,69,96,0.1); }
.login-box .btn-primary { width: 100%; padding: 12px; margin-top: 10px; }
.error-msg { background: #fef2f2; color: #dc2626; padding: 10px 14px; border-radius: var(--radius-sm); margin-bottom: 16px; font-size: 14px; text-align: center; }
.back-link { text-align: center; margin-top: 24px; }
.back-link a { color: var(--text-light); text-decoration: none; font-size: 14px; transition: 0.2s; }
.back-link a:hover { color: var(--accent-start); }

/* ===== 页脚 ===== */
footer { text-align: center; padding: 32px 0; color: var(--text-light); font-size: 13px; margin-top: 10px; }

/* ===== Toast 消息 ===== */
.toast {
    position: fixed; top: 20px; right: 20px; padding: 14px 24px;
    border-radius: var(--radius-md); color: #fff; font-weight: 500;
    box-shadow: var(--shadow-lg); z-index: 9999;
    animation: slideIn 0.3s ease;
}
.toast-success { background: #22c55e; }
.toast-error { background: #ef4444; }
.toast-info { background: #3b82f6; }
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ===== 响应式适配 ===== */
@media (max-width: 768px) {
    header { padding: 24px 0 20px; }
    header h1 { font-size: 24px; }
    .header-actions a { font-size: 12px; padding: 5px 14px; }
    .sites-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
    .site-card { padding: 10px 12px; gap: 10px; }
    .site-card h3 { font-size: 14px; }
    .add-form .form-row { grid-template-columns: 1fr; }
    .admin-section { padding: 16px; }
    .sites-table { font-size: 12px; }
    .sites-table th, .sites-table td { padding: 8px 4px; }
    .login-box { padding: 24px; margin: 0 16px; }
    .category-form-row { flex-direction: column; align-items: stretch; }
    .category-form-row .form-group { min-width: auto; }
    .category-item { flex-wrap: wrap; }
    .category-item .cat-actions { margin-left: 0; width: 100%; justify-content: flex-start; }
    .edit-row .edit-form { flex-direction: column; }
    .edit-row .edit-form input { width: 100%; }
}