/* ══════════════════════════════════════
   心怡电竞 · 管理后台 样式
   规则来源：UI_rule.md
   设计基调：暗色科技风 · 沉稳专业 · 微光感
   ══════════════════════════════════════ */

:root {
    /* 主色 */
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #A29BFE;
    --primary-rgb: 108,92,231;

    /* 强调色 */
    --accent: #00D2FF;
    --accent-glow: rgba(0,210,255,0.25);
    --accent-rgb: 0,210,255;

    /* 功能色 */
    --success: #00E676;
    --success-rgb: 0,230,118;
    --warning: #FFB300;
    --warning-rgb: 255,179,0;
    --danger: #FF5252;
    --danger-rgb: 255,82,82;
    --info: #00D2FF;

    /* 中性色 */
    --bg-dark: #0F0F1A;
    --bg-card: #1A1A2E;
    --bg-sidebar: #0A0A14;
    --bg-input: #12121F;
    --border: #2A2A3E;
    --text-primary: #EAEAEF;
    --text-secondary: #8888A0;
    --text-muted: #5C5C78;

    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #6C5CE7, #00D2FF);
    --gradient-accent: linear-gradient(135deg, #00D2FF, #6C5CE7);
    --gradient-card-purple: linear-gradient(135deg, rgba(108,92,231,0.3), rgba(108,92,231,0.05));
    --gradient-card-green: linear-gradient(135deg, rgba(0,230,118,0.3), rgba(0,230,118,0.05));
    --gradient-card-amber: linear-gradient(135deg, rgba(255,179,0,0.3), rgba(255,179,0,0.05));
    --gradient-card-cyan: linear-gradient(135deg, rgba(0,210,255,0.3), rgba(0,210,255,0.05));

    /* 圆角 */
    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* 投影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow: 0 4px 24px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --shadow-glow-purple: 0 0 20px rgba(108,92,231,0.15);
    --shadow-glow-cyan: 0 0 20px rgba(0,210,255,0.1);

    /* 过渡 */
    --transition-fast: 150ms ease;
    --transition: 200ms ease-out;
    --transition-bounce: 200ms cubic-bezier(0.34,1.56,0.64,1);

    /* 侧边栏 */
    --sidebar-width: 240px;
}

/* ═══════════════════════ 主题：蓝色科技 ═══════════════════════ */
[data-theme="blue"] {
    --primary: #2F6BFF;
    --primary-dark: #1E49C8;
    --primary-light: #7EA2FF;
    --primary-rgb: 47,107,255;
    --accent: #00E0C6;
    --accent-glow: rgba(0,224,198,0.22);
    --accent-rgb: 0,224,198;
    --success: #00D68F;
    --success-rgb: 0,214,143;
    --warning: #F6C453;
    --warning-rgb: 246,196,83;
    --danger: #FF4D6D;
    --danger-rgb: 255,77,109;
    --info: #36CFFF;
    --bg-dark: #080B12;
    --bg-card: #111827;
    --bg-sidebar: #060910;
    --bg-input: #0C1220;
    --border: #263245;
    --text-primary: #F5F7FA;
    --text-secondary: #9CA9BC;
    --text-muted: #66758A;
    --gradient-primary: linear-gradient(135deg, #2F6BFF, #00E0C6);
    --gradient-accent: linear-gradient(135deg, #00E0C6, #7EA2FF);
    --gradient-card-purple: linear-gradient(135deg, rgba(47,107,255,0.22), rgba(47,107,255,0.04));
    --gradient-card-green: linear-gradient(135deg, rgba(0,214,143,0.20), rgba(0,214,143,0.04));
    --gradient-card-amber: linear-gradient(135deg, rgba(246,196,83,0.20), rgba(246,196,83,0.04));
    --gradient-card-cyan: linear-gradient(135deg, rgba(0,224,198,0.20), rgba(0,224,198,0.04));
    --radius-sm: 4px;
    --radius: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.24);
    --shadow: 0 8px 30px rgba(0,0,0,0.36);
    --shadow-lg: 0 18px 60px rgba(0,0,0,0.55);
    --shadow-glow-purple: 0 0 22px rgba(47,107,255,0.16);
    --shadow-glow-cyan: 0 0 22px rgba(0,224,198,0.14);
}

/* ═══════════════════════ 主题：黑金 ═══════════════════════ */
[data-theme="gold"] {
    --primary: #D6A84F;
    --primary-dark: #A87924;
    --primary-light: #F3D58A;
    --primary-rgb: 214,168,79;
    --accent: #F5C76A;
    --accent-glow: rgba(245,199,106,0.22);
    --accent-rgb: 245,199,106;
    --success: #22C55E;
    --success-rgb: 34,197,94;
    --warning: #FACC15;
    --warning-rgb: 250,204,21;
    --danger: #EF4444;
    --danger-rgb: 239,68,68;
    --info: #38BDF8;
    --bg-dark: #080806;
    --bg-card: #14120C;
    --bg-sidebar: #050504;
    --bg-input: #11100B;
    --border: #302917;
    --text-primary: #F7F1E3;
    --text-secondary: #B8AA8A;
    --text-muted: #7C715A;
    --gradient-primary: linear-gradient(135deg, #D6A84F, #F3D58A);
    --gradient-accent: linear-gradient(135deg, #F5C76A, #A87924);
    --gradient-card-purple: linear-gradient(135deg, rgba(214,168,79,0.22), rgba(214,168,79,0.04));
    --gradient-card-green: linear-gradient(135deg, rgba(34,197,94,0.16), rgba(34,197,94,0.03));
    --gradient-card-amber: linear-gradient(135deg, rgba(250,204,21,0.20), rgba(250,204,21,0.04));
    --gradient-card-cyan: linear-gradient(135deg, rgba(56,189,248,0.16), rgba(56,189,248,0.03));
    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.28);
    --shadow: 0 8px 28px rgba(0,0,0,0.42);
    --shadow-lg: 0 18px 64px rgba(0,0,0,0.62);
    --shadow-glow-purple: 0 0 24px rgba(214,168,79,0.16);
    --shadow-glow-cyan: 0 0 24px rgba(56,189,248,0.10);
}

/* ── 主题切换按钮 ── */
.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all var(--transition-fast);
}
.theme-toggle:hover {
    background: var(--border);
    color: var(--text-primary);
}

/* ═══════════════════════ 全局 ═══════════════════════ */

* { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 背景微光效 */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(108,92,231,0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(0,210,255,0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* 选中文字 */
::selection {
    background: rgba(var(--primary-rgb), 0.35);
    color: #fff;
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0;
}
h4 { font-size: 18px; }
h5 { font-size: 15px; }
h6 { font-size: 14px; font-weight: 600; }

/* 滚动条 */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
::-webkit-scrollbar-corner { background: transparent; }

/* ═══════════════════════ 页面过渡 ═══════════════════════ */

#page-content-wrapper > .container-fluid {
    position: relative;
    animation: pageFadeIn 300ms ease-out;
}

@keyframes pageFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════ 骨架屏 ═══════════════════════ */

.skeleton {
    background: linear-gradient(90deg, var(--bg-input) 25%, rgba(var(--primary-rgb),0.08) 50%, var(--bg-input) 75%);
    background-size: 200% 100%;
    animation: skeletonPulse 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeletonPulse {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-title { height: 18px; width: 60%; margin-bottom: 12px; }
.skeleton-avatar { width: 48px; height: 48px; border-radius: var(--radius-md); }

/* ═══════════════════════ 侧边栏 ═══════════════════════ */

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    overflow-y: auto;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    transition: transform var(--transition);
}

.sidebar-heading {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border) !important;
}
.sidebar-heading h5 { font-size: 18px; font-weight: 700; color: var(--text-primary); }
.sidebar-heading small { color: var(--text-muted) !important; }

.sidebar .list-group-item {
    height: 44px;
    padding: 0 16px;
    font-size: 14px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-left: 3px solid transparent;
    display: flex;
    align-items: center;
    transition: all var(--transition-fast);
}
.sidebar .list-group-item i { font-size: 20px; margin-right: 10px; width: 20px; text-align: center; }
.sidebar .list-group-item:hover {
    color: var(--text-primary);
    background: rgba(var(--primary-rgb), 0.08);
}
.sidebar .list-group-item.active {
    color: var(--accent);
    background: rgba(var(--primary-rgb), 0.15);
    border-left-color: var(--primary);
}

#page-content-wrapper {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    transition: margin var(--transition);
}

.sidebar-collapsed .sidebar { transform: translateX(calc(-1 * var(--sidebar-width))); }
.sidebar-collapsed #page-content-wrapper { margin-left: 0; }

/* ═══════════════════════ 顶部导航 ═══════════════════════ */

#page-content-wrapper > nav {
    height: 56px;
    background: var(--bg-card) !important;
    border-bottom: 1px solid var(--border) !important;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 999;
    backdrop-filter: blur(12px);
}
#page-content-wrapper > nav .navbar-brand,
#page-content-wrapper > nav .text-muted { color: var(--text-secondary) !important; }
#page-content-wrapper > nav .btn { border-color: var(--border); color: var(--text-secondary); }
#page-content-wrapper > nav .btn:hover { background: var(--border); color: var(--text-primary); }
#page-content-wrapper > nav .btn-outline-danger {
    border-color: rgba(255,82,82,0.3);
    color: var(--danger);
}
#page-content-wrapper > nav .btn-outline-danger:hover {
    background: rgba(255,82,82,0.15);
}

/* ═══════════════════════ 卡片 ═══════════════════════ */

.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
}

/* ═══════════════════════ 统计卡片 ═══════════════════════ */

.stat-card {
    position: relative;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--bg-card);
    overflow: hidden;
    transition: all var(--transition-fast);
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    transition: height var(--transition-fast);
}
.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.stat-card:hover::before { height: 3px; }

.stat-card.accent-purple::before { background: var(--gradient-primary); }
.stat-card.accent-green::before  { background: linear-gradient(90deg, var(--success), #00C853); }
.stat-card.accent-amber::before  { background: linear-gradient(90deg, var(--warning), #FFA000); }
.stat-card.accent-cyan::before   { background: linear-gradient(90deg, var(--accent), #00B8D4); }

.stat-card .card-body { padding: 20px; }
.stat-card .card-body.d-flex { gap: 14px; }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
    color: #fff;
}
.stat-icon.purple { background: var(--gradient-primary); }
.stat-icon.green  { background: linear-gradient(135deg, #00E676, #00C853); }
.stat-icon.amber  { background: linear-gradient(135deg, #FFB300, #FF8F00); }
.stat-icon.cyan   { background: linear-gradient(135deg, #00D2FF, #0091EA); }

.stat-value { font-size: 32px; font-weight: 700; line-height: 1.2; color: var(--text-primary); }
.stat-label { font-size: 12px; color: var(--text-secondary); margin-top: 2px; }

/* ═══════════════════════ 按钮 ═══════════════════════ */

.btn {
    height: 36px;
    padding: 0 16px;
    font-size: 14px;
    font-weight: 600;
    border-radius: var(--radius);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all var(--transition-fast);
    white-space: nowrap;
}
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-lg { height: 44px; padding: 0 20px; font-size: 15px; }

.btn i { font-size: 14px; }
.btn-sm i { font-size: 12px; }

.btn-gradient {
    background: var(--gradient-primary);
    border: none;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.btn-gradient::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition-fast);
}
.btn-gradient:hover { filter: brightness(1.12); color: #fff; box-shadow: var(--shadow-glow-purple); }
.btn-gradient:hover::after { opacity: 1; }
.btn-gradient:active { transform: scale(0.98); }

.btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline-primary:hover {
    background: rgba(var(--primary-rgb), 0.15);
    color: var(--primary-light);
    border-color: var(--primary-light);
}

.btn-outline-danger {
    border-color: rgba(255,82,82,0.3);
    color: var(--danger);
    background: transparent;
}
.btn-outline-danger:hover {
    background: rgba(255,82,82,0.12);
    color: var(--danger);
    border-color: var(--danger);
}

.btn-outline-info {
    border-color: rgba(0,210,255,0.3);
    color: var(--accent);
    background: transparent;
}
.btn-outline-info:hover {
    background: rgba(0,210,255,0.1);
    color: var(--accent);
    border-color: var(--accent);
}

.btn-outline-warning {
    border-color: rgba(255,179,0,0.3);
    color: var(--warning);
    background: transparent;
}
.btn-outline-warning:hover {
    background: rgba(255,179,0,0.1);
    color: var(--warning);
    border-color: var(--warning);
}

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

.btn-upload {
    cursor: pointer;
    white-space: nowrap;
    border-color: var(--border);
    color: var(--text-secondary);
}
.btn-upload:hover { background: var(--border); color: var(--text-primary); }

/* btn-secondary override (Bootstrap default → dark) */
.btn-secondary {
    background: var(--border);
    border-color: var(--border);
    color: var(--text-secondary);
}
.btn-secondary:hover {
    background: var(--text-muted);
    border-color: var(--text-muted);
    color: var(--text-primary);
}

/* 禁用态 */
.btn:disabled, .btn.disabled {
    opacity: 0.4;
    pointer-events: none;
}

/* ═══════════════════════ 表单 ═══════════════════════ */

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.form-label .text-danger { color: var(--danger) !important; }

.form-control, .form-select {
    height: 36px;
    padding: 0 12px;
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
    background: var(--bg-input);
    color: var(--text-primary);
}
.form-control::placeholder { color: var(--text-muted); }
.form-control[type="number"] { -moz-appearance: textfield; }

.form-control.is-invalid, .form-select.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(255,82,82,0.15);
}
.form-control.is-invalid:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(255,82,82,0.2);
}

textarea.form-control {
    height: auto;
    padding: 10px 12px;
    line-height: 1.6;
}

.form-control-sm { height: 32px; font-size: 13px; padding: 0 10px; }
.form-select-sm { height: 32px; font-size: 13px; }

.form-check-input {
    background: var(--bg-input);
    border-color: var(--border);
}
.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}
.form-check-input:focus {
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
}
.form-check-label { color: var(--text-primary); }

select.form-select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* input[type="date"] dark calendar picker */
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.7);
    cursor: pointer;
}

/* ═══════════════════════ 表格 ═══════════════════════ */

/* 彻底覆盖 Bootstrap table 白色背景 */
.table {
    --bs-table-bg: transparent;
    --bs-table-accent-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-hover-bg: rgba(var(--primary-rgb), 0.04);
    --bs-table-hover-color: var(--text-primary);
    --bs-table-striped-bg: rgba(var(--primary-rgb), 0.03);
    --bs-table-border-color: var(--border);
    color: var(--text-primary) !important;
    margin-bottom: 0;
    background: transparent !important;
}
.table > :not(caption) > * > * {
    background-color: transparent !important;
    color: var(--text-primary) !important;
    border-bottom-color: var(--border) !important;
    box-shadow: none !important;
}
.table > tbody > tr > * {
    background-color: transparent !important;
}
.table.table-hover > tbody > tr:hover > * {
    background-color: rgba(var(--primary-rgb), 0.04) !important;
}
.table thead th {
    background: rgba(var(--primary-rgb), 0.08);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.table tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.table tbody tr { transition: background var(--transition-fast); }
.table tbody tr:hover { background: rgba(var(--primary-rgb), 0.04); }
.table tbody tr.selected { background: rgba(var(--primary-rgb), 0.12); }

.table img {
    border-radius: var(--radius-sm);
    object-fit: cover;
}
.table-avatar {
    width: 32px;
    height: 32px;
}

/* 空状态 */
.table-empty {
    text-align: center;
    padding: 40px 20px !important;
    color: var(--text-muted);
    font-size: 14px;
}
.table-empty i { font-size: 32px; display: block; margin-bottom: 8px; opacity: 0.4; }

/* DataTables 覆盖 */
.dataTables_wrapper {
    font-size: 13px;
}
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_paginate {
    color: var(--text-secondary);
    font-size: 13px;
    padding: 8px 0;
}
.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    transition: all var(--transition-fast);
}
.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.2);
    outline: none;
}
.dataTables_wrapper .dataTables_paginate .paginate_button {
    color: var(--text-secondary) !important;
    border: 1px solid var(--border) !important;
    background: var(--bg-input) !important;
    border-radius: var(--radius-sm) !important;
    padding: 4px 10px !important;
    margin: 0 2px !important;
    transition: all var(--transition-fast);
}
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--gradient-primary) !important;
    color: #fff !important;
    border-color: transparent !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--border) !important;
    color: var(--text-primary) !important;
}
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
    opacity: 0.3 !important;
}

/* DataTables processing indicator */
.dataTables_processing {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

/* ═══════════════════════ 徽章 ═══════════════════════ */

.badge {
    padding: 2px 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border-radius: var(--radius-sm);
    vertical-align: middle;
}

.badge.bg-info    { background: rgba(0,210,255,0.15) !important; color: var(--accent); }
.badge.bg-success { background: rgba(0,230,118,0.15) !important; color: var(--success); }
.badge.bg-warning { background: rgba(255,179,0,0.15) !important; color: var(--warning); }
.badge.bg-danger  { background: rgba(255,82,82,0.15) !important; color: var(--danger); }
.badge.bg-primary { background: rgba(var(--primary-rgb), 0.15) !important; color: var(--primary-light); }
.badge.bg-secondary { background: rgba(136,136,160,0.15) !important; color: var(--text-secondary); }

/* ═══════════════════════ 弹窗 Modal ═══════════════════════ */

.modal {
    z-index: 1055;
}
.modal-backdrop {
    z-index: 1050;
    background: #000;
}
.modal-backdrop.show { opacity: 0.7; }

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}

.modal-header {
    background: var(--gradient-primary);
    color: #fff;
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    padding: 16px 20px;
}
.modal-header .btn-close { filter: invert(1) brightness(2); }
.modal-title { font-size: 16px; font-weight: 700; }

.modal-body { padding: 20px; }
.modal-footer {
    border-top: 1px solid var(--border);
    padding: 14px 20px;
    gap: 8px;
}

/* modal 出现动效 — 兼容 Bootstrap 5，仅强化缓动 */
.modal.fade .modal-dialog {
    transition: transform 250ms cubic-bezier(0.34,1.56,0.64,1), opacity 200ms ease-out;
}

/* ═══════════════════════ 导航标签 ═══════════════════════ */

.nav-tabs {
    border-bottom: 1px solid var(--border);
}
.nav-tabs .nav-link {
    color: var(--text-secondary);
    border: none;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}
.nav-tabs .nav-link:hover {
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
}
.nav-tabs .nav-link.active {
    color: var(--accent);
    background: transparent;
    border-bottom: 2px solid var(--primary);
}

/* ═══════════════════════ Toast ═══════════════════════ */

.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast-item {
    pointer-events: all;
    width: 380px;
    max-width: calc(100vw - 48px);
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-lg);
    animation: toastSlideIn 300ms cubic-bezier(0.34,1.56,0.64,1);
    backdrop-filter: blur(12px);
}
.toast-item.removing { animation: toastSlideOut 150ms ease-in forwards; }

.toast-item.toast-success { border-left: 3px solid var(--success); }
.toast-item.toast-error   { border-left: 3px solid var(--danger); }
.toast-item.toast-info    { border-left: 3px solid var(--accent); }
.toast-item.toast-warning { border-left: 3px solid var(--warning); }

.toast-icon { font-size: 18px; flex-shrink: 0; }
.toast-success .toast-icon { color: var(--success); }
.toast-error   .toast-icon { color: var(--danger); }
.toast-info    .toast-icon { color: var(--accent); }
.toast-warning .toast-icon { color: var(--warning); }

.toast-message { flex: 1; font-size: 14px; color: var(--text-primary); }
.toast-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 16px;
    padding: 2px 4px;
    line-height: 1;
    transition: color var(--transition-fast);
}
.toast-close:hover { color: var(--text-primary); }

@keyframes toastSlideIn {
    from { transform: translateX(120%); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}
@keyframes toastSlideOut {
    from { transform: translateX(0); opacity: 1; }
    to   { transform: translateX(120%); opacity: 0; }
}

/* ═══════════════════════ Confirm ═══════════════════════ */

.confirm-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 200ms ease-out;
    backdrop-filter: blur(4px);
}

.confirm-dialog {
    width: 420px;
    max-width: calc(100vw - 48px);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-lg);
    animation: scaleIn 200ms cubic-bezier(0.34,1.56,0.64,1);
}
.confirm-dialog.removing { animation: scaleOut 150ms ease-in forwards; }

.confirm-title { font-size: 18px; font-weight: 600; color: var(--text-primary); margin-bottom: 8px; }
.confirm-message { font-size: 14px; color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.confirm-actions { display: flex; justify-content: flex-end; gap: 10px; }

@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}
@keyframes scaleOut {
    from { transform: scale(1); opacity: 1; }
    to   { transform: scale(0.9); opacity: 0; }
}

/* ═══════════════════════ 登录页 ═══════════════════════ */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(180deg, #0F0F1A 0%, #1A1A2E 60%, #0F0F1A 100%);
    position: relative;
    overflow: hidden;
}
.login-page::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(108,92,231,0.12) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 80%, rgba(0,210,255,0.08) 0%, transparent 60%);
    pointer-events: none;
    animation: loginGlow 6s ease-in-out infinite alternate;
}
@keyframes loginGlow {
    0%   { opacity: 0.7; }
    100% { opacity: 1; }
}

.login-card {
    width: 400px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    background: var(--bg-card);
    position: relative;
    z-index: 1;
    animation: scaleIn 300ms cubic-bezier(0.34,1.56,0.64,1);
}
.login-card .card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    text-align: center;
    padding: 28px 24px 18px;
}
.login-card .card-header h4 { font-size: 24px; font-weight: 700; }
.login-card .card-body { padding: 24px; }

/* 登录错误提示 */
.login-page .alert-danger {
    background: rgba(255,82,82,0.12);
    border: 1px solid rgba(255,82,82,0.3);
    color: var(--danger);
    border-radius: var(--radius);
    font-size: 13px;
    padding: 10px 12px;
}

/* ═══════════════════════ Alert ═══════════════════════ */

.alert {
    border-radius: var(--radius);
    font-size: 14px;
    padding: 12px 16px;
}
.alert-danger {
    background: rgba(255,82,82,0.12);
    border: 1px solid rgba(255,82,82,0.3);
    color: var(--danger);
}
.alert-success {
    background: rgba(0,230,118,0.12);
    border: 1px solid rgba(0,230,118,0.25);
    color: var(--success);
}
.alert-info {
    background: rgba(0,210,255,0.1);
    border: 1px solid rgba(0,210,255,0.25);
    color: var(--accent);
}
.alert-warning {
    background: rgba(255,179,0,0.12);
    border: 1px solid rgba(255,179,0,0.25);
    color: var(--warning);
}

/* ═══════════════════════ 页脚 ═══════════════════════ */

#page-content-wrapper > .container-fluid > .border-top {
    border-color: var(--border) !important;
    color: var(--text-muted);
}

/* ═══════════════════════ 规格区域 ═══════════════════════ */

#specGroups .input-group-text {
    background: rgba(var(--primary-rgb), 0.1);
    border-color: var(--border);
    color: var(--text-secondary);
    font-size: 12px;
}
#specGroups .form-control {
    background: var(--bg-input);
    border-color: var(--border);
    color: var(--text-primary);
}

.spec-val-input { color: var(--text-secondary) !important; }
.spec-val-input::placeholder { color: var(--text-muted) !important; }

#skuTable table { background: var(--bg-card); color: var(--text-primary); }
#skuTable thead th { background: rgba(var(--primary-rgb), 0.08); color: var(--text-secondary); }
#skuTable tbody td { padding: 8px 10px; border-color: var(--border); }

/* ═══════════════════════ 封面预览 ═══════════════════════ */

.cover-preview {
    width: 100px;
    height: 67px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    background: var(--bg-input);
    flex-shrink: 0;
}

/* ═══════════════════════ 轮播图预览 ═══════════════════════ */

#detailPreview .position-relative {
    border: 1px solid var(--border) !important;
}

.detail-preview-item {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    position: relative;
    display: inline-block;
    transition: transform var(--transition-fast);
}
.detail-preview-item:hover { transform: scale(1.05); }

/* DataTables 展开子行（暗色） */
table.dataTable tbody td.dtr-control {
    cursor: pointer;
}
table.dataTable tbody tr.dtr-details,
table.dataTable tbody tr.child {
    background: var(--bg-input) !important;
}
table.dataTable tbody tr.dtr-details td,
table.dataTable tbody tr.child td,
table.dataTable tbody tr.child ul.dtr-details {
    color: var(--text-primary) !important;
    background: var(--bg-input) !important;
    border-color: var(--border) !important;
}
table.dataTable tbody tr.child ul.dtr-details li {
    border-bottom: 1px solid var(--border) !important;
}
table.dataTable tbody tr.child ul.dtr-details .dtr-title {
    color: var(--text-secondary);
}

/* DataTables 空数据行 */
table.dataTable tbody td.dataTables_empty {
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 40px 16px !important;
}

/* ═══════════════════════ TinyMCE 暗色皮肤覆盖 ═══════════════════════ */

.tox .tox-editor-header,
.tox .tox-toolbar,
.tox .tox-toolbar__primary,
.tox .tox-toolbar-overlord {
    background: var(--bg-input) !important;
    border-color: var(--border) !important;
}
.tox .tox-tbtn {
    color: var(--text-secondary) !important;
}
.tox .tox-tbtn:hover {
    background: rgba(var(--primary-rgb), 0.12) !important;
    color: var(--text-primary) !important;
}
.tox .tox-tbtn--enabled,
.tox .tox-tbtn:active {
    background: rgba(var(--primary-rgb), 0.2) !important;
    color: var(--accent) !important;
}
.tox .tox-tbtn svg {
    fill: var(--text-secondary) !important;
}
.tox .tox-tbtn:hover svg {
    fill: var(--text-primary) !important;
}
.tox .tox-tbtn--enabled svg {
    fill: var(--accent) !important;
}
.tox:not(.tox-tinymce-inline) .tox-editor-header {
    box-shadow: none !important;
}
.tox .tox-edit-area__iframe {
    background: var(--bg-input) !important;
}
.tox .tox-statusbar {
    background: var(--bg-input) !important;
    border-color: var(--border) !important;
    color: var(--text-secondary) !important;
}
.tox .tox-menubar {
    background: var(--bg-input) !important;
    border-color: var(--border) !important;
}
.tox .tox-mbtn {
    color: var(--text-secondary) !important;
}
.tox .tox-mbtn:hover,
.tox .tox-mbtn--active {
    background: rgba(var(--primary-rgb), 0.12) !important;
    color: var(--text-primary) !important;
}
/* TinyMCE 下拉菜单 */
.tox .tox-menu {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
}
.tox .tox-collection__item {
    color: var(--text-primary) !important;
}
.tox .tox-collection__item:hover,
.tox .tox-collection__item--active {
    background: rgba(var(--primary-rgb), 0.12) !important;
}
.tox .tox-collection__item-label {
    color: var(--text-primary) !important;
}
/* TinyMCE 弹窗/对话框 */
.tox .tox-dialog {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
}
.tox .tox-dialog__header {
    background: var(--gradient-primary) !important;
    color: #fff !important;
}
.tox .tox-dialog__title {
    color: #fff !important;
}
.tox .tox-dialog__body {
    color: var(--text-primary) !important;
}
.tox .tox-dialog__body-nav-item {
    color: var(--text-secondary) !important;
}
.tox .tox-dialog__body-nav-item--active {
    color: var(--accent) !important;
    border-bottom-color: var(--primary) !important;
}
.tox .tox-textfield,
.tox .tox-listboxfield .tox-listbox,
.tox .tox-selectfield select,
.tox textarea.tox-textfield {
    background: var(--bg-input) !important;
    border-color: var(--border) !important;
    color: var(--text-primary) !important;
}
.tox .tox-label {
    color: var(--text-secondary) !important;
}
.tox .tox-button {
    background: var(--border) !important;
    border-color: var(--border) !important;
    color: var(--text-secondary) !important;
}
.tox .tox-button--primary {
    background: var(--gradient-primary) !important;
    border: none !important;
    color: #fff !important;
}
.tox .tox-button--secondary {
    background: var(--border) !important;
    color: var(--text-secondary) !important;
}

/* ═══════════════════════ 图表暗色主题 ═══════════════════════ */

canvas {
    max-width: 100%;
}

/* ═══════════════════════ 工具类覆盖 ═══════════════════════ */

.text-muted { color: var(--text-muted) !important; }
.text-danger { color: var(--danger) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--accent) !important; }
.text-primary { color: var(--primary-light) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.border-top { border-color: var(--border) !important; }
.border-bottom { border-color: var(--border) !important; }
.border-start { border-color: var(--border) !important; }
.border-end { border-color: var(--border) !important; }

.bg-dark { background-color: var(--bg-dark) !important; }
.bg-white { background-color: var(--bg-card) !important; }

.opacity-75 { opacity: 0.75; }

/* ═══════════════════════ 描述列表 (dl/dt/dd) ═══════════════════════ */

dl.row dt {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 8px;
}
dl.row dd {
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 8px;
}

/* ═══════════════════════ 分隔线 ═══════════════════════ */

hr {
    border-color: var(--border);
    opacity: 0.5;
}

/* ═══════════════════════ 响应式 ═══════════════════════ */

@media (max-width: 768px) {
    .sidebar { transform: translateX(calc(-1 * var(--sidebar-width))); }
    #page-content-wrapper { margin-left: 0; }
    .sidebar-collapsed .sidebar { transform: translateX(0); }
    .login-card { width: calc(100vw - 32px); }
    .toast-item { width: calc(100vw - 48px); }
    .confirm-dialog { width: calc(100vw - 48px); }
}