/* ========== 全局重置样式 ========== */
:root {
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-200: #bae6fd;
    --primary-300: #7dd3fc;
    --primary-400: #38bdf8;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    --primary-800: #075985;
    --primary-900: #0c4a6e;
    
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    --success-500: #10b981;
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --border-radius: 0.75rem;
    --border-radius-sm: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
    font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    line-height: 1.6;
    color: var(--gray-800);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== 工具类样式 ========== */
.hidden {
    display: none !important;
}

/* ========== 登录界面样式 ========== */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    border-radius: var(--border-radius-xl);
    padding: 3rem;
    box-shadow: var(--shadow-2xl);
    border: 1px solid rgba(255, 255, 255, 0.3);
    max-width: 420px;
    width: 100%;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.login-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 32px 64px -12px rgba(0, 0, 0, 0.25);
}

.login-card .icon {
    width: 88px;
    height: 88px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.3);
    position: relative;
}

.login-card .icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--primary-400), var(--primary-600));
    z-index: -1;
    opacity: 0.7;
    filter: blur(8px);
}

.login-card .icon i {
    font-size: 2.25rem;
    color: white;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.login-card h2 {
    color: var(--gray-900);
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: 0.75rem;
    letter-spacing: -0.025em;
}

.login-card p {
    color: var(--gray-600);
    margin-bottom: 2.5rem;
    font-size: 0.95rem;
    line-height: 1.6;
    font-weight: 400;
}

/* ========== 表单样式 ========== */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.875rem;
    letter-spacing: 0.025em;
}

.form-group input,
.form-group textarea,
.form-group select:not(.form-control),
.form-control:not(select) {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--gray-50);
    font-family: inherit;
    font-weight: 500;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:not(.form-control):focus,
.form-control:not(select):focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
    background: white;
    transform: translateY(-1px);
}

.form-group select,
.form-control.select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 1rem center;
    background-repeat: no-repeat;
    background-size: 1.5rem;
    padding-right: 3rem;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
}

/* ========== 按钮样式 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    font-family: inherit;
    letter-spacing: 0.025em;
    position: relative;
    overflow: hidden;
}

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

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

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

.btn:active {
    transform: translateY(0);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 0.5rem 0.875rem;
    font-size: 0.8rem;
    border-radius: var(--border-radius-sm);
}

.btn-primary,
.btn {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
}

.btn-secondary {
    background: var(--gray-100);
    color: var(--gray-700);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-500) 0%, #e97e0b 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e97e0b 0%, #d97706 100%);
}

.btn-danger {
    background: linear-gradient(135deg, var(--error-500) 0%, #dc2626 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-500) 0%, #059669 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
}

/* ========== 管理员界面布局 ========== */
.admin-container {
    display: flex;
    min-height: 100vh;
    background: var(--gray-50);
}

/* ========== 侧边栏样式 ========== */
.sidebar {
    width: 280px;
    background: white;
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--gray-100);
}

.logo {
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-bottom: 1px solid var(--gray-100);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
}

.logo i {
    font-size: 1.75rem;
    color: var(--primary-600);
}

.logo span {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.025em;
}

.nav-menu {
    list-style: none;
    padding: 1.5rem 1rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.logout-button {
    padding: 0.875rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--gray-600);
    font-weight: 500;
    border-radius: var(--border-radius);
    margin: 0 1rem 1rem 1rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
}

.logout-button:hover {
    background: #fee2e2;
    color: var(--error-500);
    border-color: var(--error-300);
    transform: translateY(-1px);
}

.logout-button i {
    font-size: 1.125rem;
    width: 24px;
    text-align: center;
}

.nav-item {
    padding: 0.875rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--gray-600);
    font-weight: 500;
    border-radius: var(--border-radius);
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--primary-500);
    border-radius: 0 2px 2px 0;
    transition: height 0.2s ease;
}

.nav-item:hover {
    background: var(--primary-50);
    color: var(--primary-700);
}

.nav-item:hover::before {
    height: 20px;
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(14, 165, 233, 0.3);
}

.nav-item.active::before {
    height: 100%;
    background: white;
    width: 3px;
}

.nav-item i {
    font-size: 1.125rem;
    width: 24px;
    text-align: center;
}

/* ========== 主内容区域 ========== */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    max-height: 100vh;
}

.page-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-200);
}

.page-header h1 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--gray-900);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    letter-spacing: -0.025em;
}

.page-header h1 i {
    color: var(--primary-600);
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* ========== 统计卡片样式 ========== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-400) 0%, var(--primary-600) 100%);
}

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

.stat-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-size: 1.75rem;
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.3);
}

.stat-info h3 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-900);
    margin-bottom: 0.25rem;
    line-height: 1;
    letter-spacing: -0.025em;
}

.stat-info p {
    color: var(--gray-600);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========== 图表容器样式 ========== */
.chart-container {
    display: grid;
    gap: 1.5rem;
}

.chart-card {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
}

.chart-card h3 {
    margin-bottom: 1.5rem;
    color: var(--gray-900);
    font-weight: 700;
    font-size: 1.25rem;
}

/* ========== 筛选和搜索区域 ========== */
.filter-section {
    background: white;
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    flex: 1;
    min-width: 400px;
}

.search-box i {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-400);
    font-size: 1.125rem;
}

.search-box input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background: var(--gray-50);
}

.search-box input:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
    background: white;
    transform: translateY(-1px);
}

.search-box input::placeholder {
    color: var(--gray-400);
    font-weight: 400;
}

.filter-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.filter-controls select {
    min-width: 200px;
    border-radius: var(--border-radius-lg);
    padding: 1rem 2.75rem 1rem 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: 2px solid var(--gray-200);
    background: var(--gray-50);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.filter-controls select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
    background: white;
    transform: translateY(-1px);
    outline: none;
    animation: dropdownExpand 0.3s ease;
}

/* 筛选器下拉框选项样式 */
.filter-controls select option {
    padding: 1.25rem 1.5rem;
    background: white;
    font-weight: 700;
    font-size: 1.125rem;
    min-height: 3.5rem;
    line-height: 1.6;
    border-radius: 0.75rem;
    margin: 0.25rem 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.filter-controls select option:hover {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    color: var(--primary-800);
    transform: translateX(6px) scale(1.02);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.2);
    border-color: var(--primary-200);
}

.filter-controls select option:checked {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-weight: 800;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.4);
    border-color: var(--primary-400);
    transform: translateX(6px) scale(1.02);
}

/* 筛选器选项选中前的指示器 */
.filter-controls select option::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-300);
    transition: all 0.3s ease;
    opacity: 0;
}

.filter-controls select option:hover::before {
    opacity: 1;
    background: var(--primary-400);
    transform: translateY(-50%) scale(1.2);
}

.filter-controls select option:checked::before {
    opacity: 1;
    background: white;
    transform: translateY(-50%) scale(1.5);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

/* 增强筛选器选项文本样式 */
.filter-controls select option {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    letter-spacing: 0.025em;
}

.filter-controls select option:hover {
    text-shadow: 0 1px 3px rgba(14, 165, 233, 0.3);
}

.filter-controls select option:checked {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 筛选器下拉框滚动条美化 */
.filter-controls select::-webkit-scrollbar {
    width: 8px;
}

.filter-controls select::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

.filter-controls select::-webkit-scrollbar-thumb {
    background: var(--primary-300);
    border-radius: 4px;
    transition: background 0.2s ease;
}

.filter-controls select::-webkit-scrollbar-thumb:hover {
    background: var(--primary-400);
}

/* ========== 增强下拉框样式 ========== */
select.form-control,
.form-control.select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 1rem center;
    background-repeat: no-repeat;
    background-size: 1.25rem;
    padding-right: 2.75rem;
    cursor: pointer;
    appearance: none;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    padding: 1rem 2.75rem 1rem 1rem;
    font-size: 1rem;
    font-weight: 500;
    background-color: var(--gray-50);
    transition: all 0.3s ease;
}

select.form-control:focus,
.form-control.select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.1);
    background-color: white;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%230ea5e9' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    transform: translateY(-1px);
    outline: none;
}

/* 模态框中的下拉框样式增强 */
.modal-body select.form-control {
    width: 100%;
    background-color: var(--gray-50);
    border: 2px solid var(--gray-200);
}

.modal-body select.form-control:focus {
    background-color: white;
    border-color: var(--primary-500);
}

/* 下拉框选项样式 */
select.form-control option {
    padding: 1.25rem 1.5rem;
    background: white;
    font-weight: 700;
    font-size: 1.125rem;
    min-height: 3.5rem;
    line-height: 1.6;
    border-radius: 0.75rem;
    margin: 0.25rem 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

select.form-control option:hover {
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--primary-100) 100%);
    color: var(--primary-800);
    transform: translateX(6px) scale(1.02);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.2);
    border-color: var(--primary-200);
}

select.form-control option:checked {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-weight: 800;
    box-shadow: 0 8px 30px rgba(14, 165, 233, 0.4);
    border-color: var(--primary-400);
    transform: translateX(6px) scale(1.02);
}

/* 选项选中前的指示器 */
select.form-control option::before {
    content: '';
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-300);
    transition: all 0.3s ease;
    opacity: 0;
}

select.form-control option:hover::before {
    opacity: 1;
    background: var(--primary-400);
    transform: translateY(-50%) scale(1.2);
}

select.form-control option:checked::before {
    opacity: 1;
    background: white;
    transform: translateY(-50%) scale(1.5);
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

/* 增强选项文本样式 */
select.form-control option {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    letter-spacing: 0.025em;
}

select.form-control option:hover {
    text-shadow: 0 1px 3px rgba(14, 165, 233, 0.3);
}

select.form-control option:checked {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 增强下拉框整体外观 */
select.form-control {
    max-height: 3rem;
    font-size: 1.1rem;
}

/* 下拉框展开时的优化效果 */
select.form-control:focus {
    animation: dropdownExpand 0.3s ease;
}

@keyframes dropdownExpand {
    0% { transform: translateY(-1px) scale(1); }
    50% { transform: translateY(-2px) scale(1.02); }
    100% { transform: translateY(-1px) scale(1); }
}

/* 美化下拉框滚动条 */
select.form-control::-webkit-scrollbar {
    width: 8px;
}

select.form-control::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

select.form-control::-webkit-scrollbar-thumb {
    background: var(--primary-300);
    border-radius: 4px;
    transition: background 0.2s ease;
}

select.form-control::-webkit-scrollbar-thumb:hover {
    background: var(--primary-400);
}

/* 特殊下拉框状态 */
select.form-control:disabled {
    background: var(--gray-100);
    color: var(--gray-400);
    cursor: not-allowed;
    opacity: 0.7;
}

/* ========== 批量操作栏 ========== */
.bulk-actions {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid var(--warning-500);
    border-radius: var(--border-radius-lg);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    opacity: 0.8;
}

.bulk-actions span {
    color: #92400e;
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.bulk-actions span i {
    font-size: 1rem;
}

.bulk-actions .btn {
    font-size: 0.8rem;
    padding: 0.5rem 1rem;
}

/* ========== 表格样式 ========== */
.table-container {
    background: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--gray-100);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    background: var(--gray-50);
    padding: 1.25rem 1.5rem;
    text-align: left;
    font-weight: 700;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-100);
    vertical-align: middle;
    font-size: 0.875rem;
}

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

tr:hover {
    background: var(--gray-50);
}

/* ========== 代码样式 ========== */
code {
    background: var(--gray-100);
    padding: 0.375rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--gray-800);
    border: 1px solid var(--gray-200);
    letter-spacing: 0.025em;
}

/* ========== 状态徽章 ========== */
.status-badge {
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.status-unused {
    background: var(--primary-100);
    color: var(--primary-800);
    border: 1px solid var(--primary-200);
}

.status-active {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.status-expired {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
}
.status-banned {
    background: #fee2e2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* ========== 复制按钮 ========== */
.copy-btn {
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    padding: 0.5rem 0.75rem;
    border-radius: var(--border-radius-sm);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--gray-600);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}

.copy-btn:hover {
    background: var(--primary-50);
    border-color: var(--primary-200);
    color: var(--primary-700);
    transform: translateY(-1px);
}

/* ========== 模态框样式 ========== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(8px);
    }
}

.modal-content {
    background: white;
    border-radius: var(--border-radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--gray-200);
}

@keyframes modalSlideIn {
    from {
        transform: scale(0.95) translateY(-20px);
        opacity: 0;
    }
    to {
        transform: scale(1) translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 2rem 2rem 1rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.modal-close {
    background: var(--gray-100);
    border: none;
    font-size: 1.25rem;
    color: var(--gray-600);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--gray-200);
    color: var(--gray-800);
}

.modal form,
.modal-body {
    padding: 2rem;
}

.form-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

/* ========== Toast 提示样式 ========== */
.toast {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius-lg);
    color: white;
    font-weight: 600;
    z-index: 10000;
    transform: translateX(calc(100% + 2rem));
    transition: all 0.3s ease;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-width: 300px;
    font-size: 0.875rem;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: linear-gradient(135deg, var(--success-500) 0%, #059669 100%);
}

.toast.error {
    background: linear-gradient(135deg, var(--error-500) 0%, #dc2626 100%);
}

.toast.warning {
    background: linear-gradient(135deg, var(--warning-500) 0%, #e97e0b 100%);
}

.toast::before {
    content: '';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1rem;
}

.toast.success::before {
    content: '\f00c'; /* check */
}

.toast.error::before {
    content: '\f00d'; /* times */
}

.toast.warning::before {
    content: '\f071'; /* exclamation-triangle */
}

/* ========== 表格复选框样式 ========== */
.table-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-300);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}

.table-checkbox:checked {
    background: var(--primary-500);
    border-color: var(--primary-500);
}

.table-checkbox:checked::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: white;
    font-size: 0.75rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.table-checkbox-cell {
    width: 40px;
    text-align: center;
}

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .admin-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        box-shadow: var(--shadow-md);
    }
    
    .nav-menu {
        display: flex;
        flex-direction: row;
        padding: 1rem;
        overflow-x: auto;
        gap: 0.5rem;
    }
    
    .nav-item {
        white-space: nowrap;
        min-width: auto;
        margin: 0;
    }
    
    .main-content {
        padding: 1rem;
    }
    
    .search-box {
        min-width: 300px;
    }
    
    .filter-controls select {
        min-width: 180px;
    }
}

@media (max-width: 768px) {
    .page-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .filter-section {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        padding: 1.5rem;
    }
    
    .search-box {
        min-width: auto;
    }
    
    .search-box input {
        padding: 0.875rem 0.875rem 0.875rem 2.5rem;
        font-size: 0.875rem;
    }
    
    .filter-controls select {
        min-width: 100%;
        padding: 0.875rem 2.25rem 0.875rem 0.875rem;
        font-size: 0.875rem;
    }
    
    select.form-control,
    .form-control.select {
        padding: 0.875rem 2.25rem 0.875rem 0.875rem;
        font-size: 0.875rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .bulk-actions {
        flex-direction: column;
        gap: 0.75rem;
        align-items: stretch;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 800px;
    }
    
    .login-card {
        padding: 2rem;
    }
    
    .toast {
        right: 1rem;
        top: 1rem;
        min-width: auto;
        max-width: calc(100vw - 2rem);
    }
}

/* ========== 滚动条样式 ========== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--gray-300);
    border-radius: 4px;
    transition: background 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gray-400);
}

/* ========== 加载状态样式 ========== */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--primary-200);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========== 精细化样式调整 ========== */
.btn-group {
    display: flex;
    gap: 0.25rem;
    align-items: center;
    flex-wrap: nowrap;
}

.btn-group .btn {
    padding: 0.25rem 0.5rem !important;
    font-size: 0.75rem !important;
    white-space: nowrap;
    min-width: auto;
}

.btn-group .copy-btn {
    padding: 0.25rem 0.5rem !important;
    font-size: 0.75rem !important;
    white-space: nowrap;
    min-width: auto;
}

/* 表格居中对齐 */
.table-container th,
.table-container td {
    text-align: center !important;
    vertical-align: middle !important;
}

.table-container th:first-child,
.table-container td:first-child {
    text-align: left !important;
}

.table-container th:last-child,
.table-container td:last-child {
    text-align: center !important;
}

/* 状态标签居中 */
.status-badge {
    display: inline-block;
    text-align: center;
}

/* 操作列按钮组居中 */
.table-container td:last-child .btn-group {
    justify-content: center;
    display: flex;
}

/* 确保操作列内的按钮组正确居中 */
.table-container td:last-child {
    text-align: center !important;
}

.table-container td:last-child .btn-group .btn,
.table-container td:last-child .btn-group .copy-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 0.375rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.position-relative {
    position: relative;
}

/* ========== 动画增强 ========== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}