/* ============================================================
   模组bug反馈中心 - v5 现代化设计系统
   Design: Refined Tech / Glassmorphism
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Sora:wght@400;500;600;700;800&family=Plus+Jakarta+Sans:wght@400;500;600;700&family=Noto+Sans+SC:wght@400;500;700&display=swap');

/* ============================================================
   设计令牌 - 亮色模式
   ============================================================ */

:root {
    /* 主色调 */
    --primary: #4f46e5;
    --primary-dark: #4338ca;
    --primary-light: #e0e7ff;
    --primary-glow: rgba(79, 70, 229, 0.25);

    /* 辅助色 */
    --accent: #06b6d4;
    --accent-light: #cffafe;

    /* 背景 */
    --bg: #f0f4f8;
    --bg-secondary: #e2e8f0;
    --card: rgba(255, 255, 255, 0.85);
    --card-solid: #ffffff;
    --card-border: rgba(255, 255, 255, 0.6);

    /* 文字 */
    --text: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    /* 边框 */
    --border: #e2e8f0;
    --border-light: #f1f5f9;

    /* 状态色 */
    --success: #10b981;
    --success-bg: #d1fae5;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --info: #06b6d4;
    --info-bg: #cffafe;

    /* 效果 */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-glow: 0 0 20px var(--primary-glow);

    /* 玻璃效果 */
    --glass-blur: 12px;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);

    /* 字体 */
    --font-display: 'Sora', 'Noto Sans SC', sans-serif;
    --font-body: 'Plus Jakarta Sans', 'Noto Sans SC', sans-serif;
    --font-mono: 'JetBrains Mono', 'Cascadia Code', monospace;

    /* 过渡 */
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   暗色模式
   ============================================================ */

[data-theme="dark"] {
    --primary: #818cf8;
    --primary-dark: #6366f1;
    --primary-light: rgba(99, 102, 241, 0.15);
    --primary-glow: rgba(129, 140, 248, 0.3);

    --accent: #22d3ee;
    --accent-light: rgba(34, 211, 238, 0.15);

    --bg: #0f172a;
    --bg-secondary: #1e293b;
    --card: rgba(30, 41, 59, 0.7);
    --card-solid: #1e293b;
    --card-border: rgba(148, 163, 184, 0.1);

    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --text-light: #64748b;

    --border: #334155;
    --border-light: #1e293b;

    --success: #34d399;
    --success-bg: rgba(52, 211, 153, 0.15);
    --warning: #fbbf24;
    --warning-bg: rgba(251, 191, 36, 0.15);
    --danger: #f87171;
    --danger-bg: rgba(248, 113, 113, 0.15);
    --info: #22d3ee;
    --info-bg: rgba(34, 211, 238, 0.15);

    --glass-bg: rgba(30, 41, 59, 0.6);
    --glass-border: rgba(148, 163, 184, 0.15);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.5);
}

/* ============================================================
   重置与基础
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.65;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background 0.3s, color 0.3s;
    min-height: 100vh;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background:
        radial-gradient(ellipse at top left, rgba(79, 70, 229, 0.08), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(6, 182, 212, 0.06), transparent 50%);
    pointer-events: none;
    z-index: 0;
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(ellipse at top left, rgba(99, 102, 241, 0.12), transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(6, 182, 212, 0.08), transparent 50%);
}

a { color: var(--primary); text-decoration: none; transition: var(--transition-fast); }
a:hover { text-decoration: underline; }

h1, h2, h3, h4, h5, h6 { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }

::selection { background: var(--primary-light); color: var(--primary); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   导航栏
   ============================================================ */

.navbar {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, #6366f1 100%);
    color: #fff;
    padding: 0 28px;
    display: flex;
    align-items: center;
    height: 60px;
    box-shadow: var(--shadow-lg);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.navbar::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.05), transparent);
    pointer-events: none;
}

.navbar-brand {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 800;
    color: #fff;
    margin-right: 36px;
    white-space: nowrap;
    letter-spacing: -0.02em;
    position: relative;
    z-index: 1;
}

.navbar-brand:hover { text-decoration: none; opacity: 0.9; }

.navbar-nav {
    display: flex;
    gap: 2px;
    align-items: center;
    flex: 1;
    position: relative;
    z-index: 1;
}

.navbar-nav a {
    color: rgba(255, 255, 255, 0.8);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar-nav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.12);
    text-decoration: none;
    transform: translateY(-1px);
}

.navbar-user {
    color: rgba(255, 255, 255, 0.85);
    font-size: 13px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    z-index: 1;
}

.navbar-user .role-badge {
    background: rgba(255, 255, 255, 0.2);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.theme-toggle {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition);
    margin-left: 12px;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

/* 移动端汉堡按钮 (桌面端隐藏) */
.navbar-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    width: 38px;
    height: 38px;
    cursor: pointer;
    margin-left: 8px;
    flex-shrink: 0;
    transition: var(--transition);
}

.navbar-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--transition);
    margin: 0 auto;
}

.navbar-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* 桌面端: collapse 内容内联展开 */
.navbar-collapse {
    display: contents;
}

/* ============================================================
   布局
   ============================================================ */

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 28px 24px;
    position: relative;
    z-index: 1;
}

.flash-messages {
    margin-bottom: 20px;
}
.flash-message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    border-radius: 10px;
    margin-bottom: 10px;
    font-size: 14px;
    animation: flashIn 0.3s ease;
}
.flash-message .flash-close {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    opacity: 0.6;
    padding: 0 0 0 12px;
    line-height: 1;
}
.flash-message .flash-close:hover { opacity: 1; }
.flash-warning {
    background: #fef3c7;
    color: #92400e;
    border: 1px solid #fcd34d;
}
.flash-error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fca5a5;
}
.flash-success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #6ee7b7;
}
.flash-info {
    background: #dbeafe;
    color: #1e40af;
    border: 1px solid #93c5fd;
}
[data-theme="dark"] .flash-warning { background: #422006; color: #fbbf24; border-color: #78350f; }
[data-theme="dark"] .flash-error { background: #450a0a; color: #f87171; border-color: #7f1d1d; }
[data-theme="dark"] .flash-success { background: #052e16; color: #4ade80; border-color: #14532d; }
[data-theme="dark"] .flash-info { background: #0c1e3a; color: #60a5fa; border-color: #1e3a5f; }
@keyframes flashIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 28px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h1 {
    font-size: 26px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================================
   卡片 - 玻璃拟态
   ============================================================ */

.card {
    background: var(--card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px;
    margin-bottom: 20px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-title {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title::before {
    content: '';
    width: 3px;
    height: 18px;
    background: linear-gradient(180deg, var(--primary), var(--accent));
    border-radius: 2px;
}

/* ============================================================
   表单
   ============================================================ */

.form-group { margin-bottom: 18px; }

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 7px;
    font-size: 14px;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-body);
    background: var(--card-solid);
    color: var(--text);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group textarea { resize: vertical; min-height: 110px; }

.form-row {
    display: flex;
    gap: 14px;
    align-items: flex-end;
    flex-wrap: wrap;
}

.form-row .form-group { flex: 1; min-width: 200px; }

.captcha-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.captcha-row input { width: 130px !important; }

.captcha-row img {
    height: 44px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    border: 1.5px solid var(--border);
    transition: var(--transition);
}

.captcha-row img:hover { border-color: var(--primary); }

/* ============================================================
   按钮
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 0; height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.4s, height 0.4s;
}

.btn:active::after { width: 200px; height: 200px; }

.btn:hover { text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-success { background: linear-gradient(135deg, var(--success), #059669); color: #fff; }
.btn-danger { background: linear-gradient(135deg, var(--danger), #dc2626); color: #fff; }
.btn-danger:hover { background: linear-gradient(135deg, #dc2626, #b91c1c); }

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

.btn-outline:hover { background: var(--bg-secondary); border-color: var(--primary); }

.btn-sm { padding: 7px 14px; font-size: 13px; }
.btn-block { width: 100%; text-align: center; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* ============================================================
   表格
   ============================================================ */

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-solid);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

th, td {
    padding: 13px 18px;
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

th {
    background: var(--bg-secondary);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-muted);
    font-family: var(--font-display);
}

tbody tr {
    transition: var(--transition-fast);
}

tbody tr:hover { background: var(--primary-light); }

tbody tr:last-child td { border-bottom: none; }

.table-actions { display: flex; gap: 8px; align-items: center; }

/* ============================================================
   徽章
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-in_progress { background: var(--info-bg); color: var(--info); }
.badge-completed { background: var(--success-bg); color: var(--success); }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }

/* ============================================================
   提示消息
   ============================================================ */

.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid transparent;
}

.alert-error { background: var(--danger-bg); color: var(--danger); border-color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); border-color: var(--success); }
.alert-info { background: var(--info-bg); color: var(--info); border-color: var(--info); }
.alert-warning { background: var(--warning-bg); color: var(--warning); border-color: var(--warning); }

/* ============================================================
   分页
   ============================================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 24px;
}

.pagination a, .pagination span {
    padding: 9px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text);
    transition: var(--transition);
    min-width: 40px;
    text-align: center;
}

.pagination a:hover { background: var(--primary-light); border-color: var(--primary); text-decoration: none; }
.pagination .current {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 2px 8px var(--primary-glow);
}
.pagination .disabled { color: var(--text-light); opacity: 0.5; }

/* ============================================================
   统计面板
   ============================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px 20px;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0.8;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-card .stat-value {
    font-family: var(--font-display);
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 6px;
    font-weight: 500;
}

.stat-card.pending::before { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.stat-card.pending .stat-value { color: var(--warning); }
.stat-card.in_progress::before { background: linear-gradient(90deg, var(--info), #22d3ee); }
.stat-card.in_progress .stat-value { color: var(--info); }
.stat-card.completed::before { background: linear-gradient(90deg, var(--success), #34d399); }
.stat-card.completed .stat-value { color: var(--success); }
.stat-card.rejected::before { background: linear-gradient(90deg, var(--danger), #f87171); }
.stat-card.rejected .stat-value { color: var(--danger); }

/* ============================================================
   时间线
   ============================================================ */

.timeline {
    position: relative;
    padding-left: 28px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 9px;
    top: 4px;
    bottom: 4px;
    width: 2px;
    background: linear-gradient(180deg, var(--primary), var(--accent), var(--border));
}

.timeline-item {
    position: relative;
    margin-bottom: 20px;
    padding: 18px;
    background: var(--card-solid);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.timeline-item:hover { box-shadow: var(--shadow); border-color: var(--primary); }

.timeline-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 22px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--primary);
    transition: var(--transition);
}

.timeline-item.followup::before { background: var(--warning); box-shadow: 0 0 0 2px var(--warning); }
.timeline-item.reply::before { background: var(--success); box-shadow: 0 0 0 2px var(--success); }

.timeline-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 13px;
    color: var(--text-muted);
}

.timeline-meta .author { font-weight: 700; color: var(--text); }
.timeline-meta .type-tag {
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.type-tag.report { background: var(--primary-light); color: var(--primary); }
.type-tag.followup { background: var(--warning-bg); color: var(--warning); }
.type-tag.reply { background: var(--success-bg); color: var(--success); }

.timeline-content { font-size: 14px; line-height: 1.75; color: var(--text); }
.timeline-content h1, .timeline-content h2, .timeline-content h3 { margin: 10px 0 6px; }
.timeline-content p { margin: 6px 0; }
.timeline-content code {
    background: var(--bg-secondary);
    padding: 2px 7px;
    border-radius: 4px;
    font-size: 13px;
    font-family: var(--font-mono);
}
.timeline-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 14px;
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: 10px 0;
    font-family: var(--font-mono);
    font-size: 13px;
}
.timeline-content pre code { background: none; color: inherit; padding: 0; }

/* ============================================================
   附件
   ============================================================ */

.attachments {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.attachment-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    transition: var(--transition);
}

.attachment-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); }

.attachment-item img.thumb {
    width: 90px;
    height: 65px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.attachment-item img.thumb:hover { transform: scale(1.05); }

.attachment-item a { color: var(--primary); font-weight: 500; }

/* ============================================================
   文件上传
   ============================================================ */

.file-upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 28px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: block;
}

.file-upload-area:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.file-upload-area input[type="file"] { display: none; }
.file-upload-hint { color: var(--text-muted); font-size: 13px; margin-top: 6px; }

.file-list { margin-top: 12px; }
.file-list-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 13px;
    border-bottom: 1px solid var(--border-light);
}

.file-list-item:last-child { border-bottom: none; }

/* ============================================================
   工具类
   ============================================================ */

.text-muted { color: var(--text-muted); }
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

.empty-state {
    text-align: center;
    padding: 56px 24px;
    color: var(--text-muted);
}

.empty-state .icon { font-size: 56px; margin-bottom: 16px; opacity: 0.6; }
.empty-state p { font-size: 15px; }

/* ============================================================
   搜索栏
   ============================================================ */

.search-bar {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 22px;
}

.search-bar input[type="text"] {
    flex: 1;
    min-width: 200px;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--card-solid);
    color: var(--text);
    transition: var(--transition);
}

.search-bar input[type="text"]:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

.search-bar select {
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--card-solid);
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.search-bar select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px var(--primary-glow); }

/* ============================================================
   英雄区
   ============================================================ */

.hero {
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #312e81 100%);
    color: #fff;
    padding: 80px 32px;
    text-align: center;
    border-radius: var(--radius-lg);
    margin-bottom: 36px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url('/static/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.35;
    mix-blend-mode: luminosity;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(15, 23, 42, 0.5) 100%);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
}

.hero h1 {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    letter-spacing: -0.03em;
    line-height: 1.15;
    background: linear-gradient(135deg, #fff, #c7d2fe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: heroFadeUp 0.8s ease-out;
}

.hero p {
    font-size: 17px;
    opacity: 0.85;
    max-width: 520px;
    margin: 0 auto 28px;
    line-height: 1.7;
    animation: heroFadeUp 0.8s ease-out 0.15s both;
}

.hero .btn {
    font-size: 16px;
    padding: 13px 36px;
    animation: heroFadeUp 0.8s ease-out 0.3s both;
}

.hero .btn-outline {
    color: #fff;
    border-color: rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
}

.hero .btn-outline:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.6);
}

/* 特性卡片 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 36px;
}

.feature-card {
    background: var(--card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-card .feature-icon {
    width: 28px;
    height: 28px;
    margin-bottom: 12px;
    color: var(--primary);
    display: inline-block;
    padding: 14px;
    border-radius: 14px;
    background: var(--primary-light);
}

.feature-card h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 6px;
}

.feature-card p {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.5;
}

/* ============================================================
   图表容器
   ============================================================ */

.chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 28px;
}

.chart-card {
    background: var(--card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
}

.chart-card .card-title { margin-bottom: 16px; }

.chart-container {
    position: relative;
    height: 260px;
}

/* ============================================================
   页脚
   ============================================================ */

.footer {
    text-align: center;
    padding: 32px 24px;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border);
    margin-top: 40px;
    position: relative;
    z-index: 1;
}

.footer a { color: var(--primary); }

/* ============================================================
   动画
   ============================================================ */

@keyframes heroFadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.card, .stat-card, .feature-card, .search-bar, table {
    animation: slideUp 0.4s ease-out;
}

/* ============================================================
   响应式 - 平板 (<= 768px)
   ============================================================ */

@media (max-width: 768px) {
    /* --- 导航栏 --- */
    .navbar {
        flex-wrap: wrap;
        height: auto;
        padding: 10px 14px;
        gap: 0;
    }
    .navbar-brand {
        flex: 1;
        margin-right: 0;
        font-size: 16px;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
    .theme-toggle {
        margin-left: 0;
        width: 34px;
        height: 34px;
        flex-shrink: 0;
    }
    .navbar-toggle {
        display: flex;
    }
    .navbar-collapse {
        display: block;
        width: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .navbar.nav-open .navbar-collapse {
        max-height: 420px;
    }
    /* 汉堡动画 */
    .navbar.nav-open .navbar-toggle span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .navbar.nav-open .navbar-toggle span:nth-child(2) {
        opacity: 0;
    }
    .navbar.nav-open .navbar-toggle span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    .navbar-nav {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding-top: 8px;
    }
    .navbar-nav a {
        display: block;
        padding: 11px 12px;
        font-size: 14px;
        border-radius: 8px;
        margin-bottom: 2px;
    }
    .navbar-user {
        width: 100%;
        font-size: 12px;
        padding: 8px 0 4px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        margin-top: 4px;
    }

    /* --- 容器 --- */
    .container {
        padding: 14px 12px;
    }

    /* --- 页面标题 --- */
    .page-header {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }
    .page-header h1 {
        font-size: 20px;
    }
    .page-header .btn {
        width: 100%;
    }

    /* --- 英雄区 --- */
    .hero {
        padding: 44px 18px;
        border-radius: var(--radius);
        margin-bottom: 24px;
    }
    .hero h1 {
        font-size: 26px;
    }
    .hero p {
        font-size: 14px;
        margin-bottom: 22px;
    }
    .hero .btn {
        font-size: 14px;
        padding: 11px 28px;
    }

    /* --- 卡片 --- */
    .card {
        padding: 16px;
        margin-bottom: 14px;
    }
    .card-title {
        font-size: 15px;
        margin-bottom: 14px;
        padding-bottom: 10px;
    }

    /* --- 表格 - 水平滚动 --- */
    table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    thead, tbody {
        display: table;
        width: 100%;
    }
    th, td {
        padding: 9px 10px;
        font-size: 13px;
    }
    th {
        font-size: 11px;
    }
    .table-actions {
        flex-wrap: wrap;
        gap: 4px;
    }
    .table-actions .btn {
        font-size: 12px;
        padding: 5px 10px;
    }

    /* --- 统计卡片 --- */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        margin-bottom: 20px;
    }
    .stat-card {
        padding: 16px 10px;
    }
    .stat-card .stat-value {
        font-size: 26px;
    }
    .stat-card .stat-label {
        font-size: 11px;
    }

    /* --- 图表 --- */
    .chart-grid {
        grid-template-columns: 1fr;
        gap: 14px;
        margin-bottom: 20px;
    }
    .chart-card {
        padding: 16px;
    }
    .chart-container {
        height: 220px;
    }

    /* --- 搜索栏 --- */
    .search-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .search-bar input[type="text"],
    .search-bar select {
        width: 100%;
        min-width: 0;
    }
    .search-bar .btn {
        width: 100%;
    }

    /* --- 表单 --- */
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    .form-row .form-group {
        min-width: 0;
    }
    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="password"],
    .form-group textarea,
    .form-group select {
        padding: 11px 12px;
        font-size: 15px; /* iOS 防止缩放 */
    }

    /* --- 按钮 --- */
    .btn {
        padding: 10px 18px;
        font-size: 14px;
    }
    .btn-sm {
        padding: 7px 12px;
        font-size: 12px;
    }

    /* --- 分页 --- */
    .pagination {
        flex-wrap: wrap;
        gap: 4px;
        justify-content: center;
    }
    .pagination a, .pagination span {
        padding: 7px 10px;
        font-size: 13px;
        min-width: 36px;
    }

    /* --- 时间线 --- */
    .timeline {
        padding-left: 22px;
    }
    .timeline-item {
        padding: 14px;
        margin-bottom: 14px;
    }
    .timeline-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }

    /* --- 附件 --- */
    .attachment-item img.thumb {
        width: 72px;
        height: 54px;
    }

    /* --- 文件上传 --- */
    .file-upload-area {
        padding: 18px 12px;
    }

    /* --- Mod TOP5 分布 --- */
    .mod-bar-row {
        flex-direction: column;
        align-items: stretch !important;
        gap: 6px !important;
    }
    .mod-bar-row .mod-name {
        min-width: 0 !important;
    }
    .mod-bar-row .badge {
        align-self: flex-start;
    }

    /* --- 页脚 --- */
    .footer {
        padding: 20px 14px;
        font-size: 12px;
    }

    /* --- 表单卡片宽度 --- */
    .card[style*="max-width"] {
        max-width: 100% !important;
        margin: 16px 0 !important;
    }

    /* --- 分隔线 --- */
    .card hr {
        margin: 18px 0 !important;
    }

    /* --- Markdown 内容 --- */
    .markdown-body h1 { font-size: 19px; }
    .markdown-body h2 { font-size: 16px; }
    .markdown-body h3 { font-size: 15px; }
    .markdown-body pre {
        font-size: 12px;
        padding: 10px;
    }

    /* --- 空状态 --- */
    .empty-state {
        padding: 36px 16px;
    }
    .empty-state .icon {
        font-size: 44px;
    }
}

/* ============================================================
   响应式 - 手机 (<= 480px)
   ============================================================ */

@media (max-width: 480px) {
    /* 统计卡片单列 */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    /* 英雄区缩小 */
    .hero {
        padding: 34px 14px;
    }
    .hero h1 {
        font-size: 22px;
    }
    .hero p {
        font-size: 13px;
    }
    .hero .btn {
        width: 100%;
        margin-bottom: 8px;
        display: flex;
    }

    /* 卡片内边距 */
    .card {
        padding: 14px;
        border-radius: var(--radius-sm);
    }

    /* 表格更紧凑 */
    th, td {
        padding: 8px 8px;
        font-size: 12px;
    }

    /* 统计卡片 */
    .stat-card {
        padding: 14px 8px;
    }
    .stat-card .stat-value {
        font-size: 24px;
    }

    /* 分页: 紧凑显示 */
    .pagination {
        gap: 3px;
    }
    .pagination a, .pagination span {
        padding: 6px 8px;
        font-size: 12px;
        min-width: 32px;
    }

    /* 图表高度 */
    .chart-container {
        height: 200px;
    }

    /* 页面标题 */
    .page-header h1 {
        font-size: 18px;
    }

    /* 验证码行 */
    .captcha-row {
        flex-wrap: wrap;
    }
    .captcha-row input {
        width: 100% !important;
    }
    .captcha-row img {
        height: 40px;
    }
    .captcha-row .btn {
        width: 100%;
        margin-top: 6px;
    }

    /* 时间线更紧凑 */
    .timeline {
        padding-left: 18px;
    }
    .timeline-item::before {
        left: -20px;
        width: 12px;
        height: 12px;
    }

    /* 附件缩略图 */
    .attachment-item img.thumb {
        width: 64px;
        height: 48px;
    }

    /* body 字体 */
    body {
        font-size: 14px;
    }
}

/* ============================================================
   响应式 - 小屏手机 (<= 360px)
   ============================================================ */

@media (max-width: 360px) {
    .navbar-brand {
        font-size: 14px;
        max-width: 160px;
    }
    .hero h1 {
        font-size: 20px;
    }
    .stat-card .stat-value {
        font-size: 22px;
    }
    .card {
        padding: 12px;
    }
    .container {
        padding: 12px 8px;
    }
    body {
        font-size: 13px;
    }
}

/* ============================================================
   触摸设备优化
   ============================================================ */

@media (hover: none) {
    .card:hover,
    .stat-card:hover,
    .feature-card:hover,
    .timeline-item:hover {
        transform: none;
        box-shadow: var(--shadow);
    }
    .navbar-nav a:hover {
        transform: none;
    }
    .btn:hover {
        transform: none;
    }
}

/* 安全区域适配 (iPhone 刘海屏等) */
@supports (padding: env(safe-area-inset-top)) {
    .navbar {
        padding-top: calc(10px + env(safe-area-inset-top));
    }
    .footer {
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }
}

/* ============================================================
   Markdown 渲染
   ============================================================ */

.markdown-body h1 { font-size: 22px; margin: 18px 0 10px; }
.markdown-body h2 { font-size: 18px; margin: 16px 0 8px; }
.markdown-body h3 { font-size: 16px; margin: 14px 0 6px; }
.markdown-body ul, .markdown-body ol { margin: 10px 0; padding-left: 26px; }
.markdown-body blockquote {
    border-left: 3px solid var(--primary);
    padding-left: 14px;
    color: var(--text-muted);
    margin: 10px 0;
    font-style: italic;
}
.markdown-body table { margin: 10px 0; }
.markdown-body img { max-width: 100%; border-radius: var(--radius-sm); }