/* ==================== 全局样式变量 ==================== */
:root {
    --sidebar-width: 260px;
    --header-height: 70px;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    
    /* 品牌色 */
    --accent-500: #FF6B00;
    --accent-400: #FF8A3C;
    --accent-300: #FFA55A;
    --accent-rgb: 255, 107, 0;
    
    /* 功能色 */
    --success-500: #10B981;
    --success-rgb: 16, 185, 129;
    --warning-500: #F59E0B;
    --warning-rgb: 245, 158, 11;
    --danger-500: #EF4444;
    --danger-rgb: 239, 68, 68;
    
    /* 奢華點綴 */
    --gold: #FFD700;
    --gold-rgb: 255, 215, 0;
    
    /* 間距系統 */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    
    /* 圓角系統 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
}

/* ==================== 設計令牌 ==================== */
:root {
    /* 玻璃擬態 */
    --glass-bg: rgba(21, 26, 40, 0.7);
    --glass-border: 1px solid rgba(255, 255, 255, 0.05);
    --glass-border-bottom: 1px solid rgba(255, 215, 0, 0.1);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* 發光效果 */
    --neon-glow: 0 0 20px rgba(var(--accent-rgb), 0.3);
    --neon-glow-strong: 0 0 30px rgba(var(--accent-rgb), 0.5);
    --gold-glow: 0 0 15px rgba(255, 215, 0, 0.2);
}

/* ==================== 暗色主题 ==================== */
[data-theme="dark"] {
    --bg-primary: #0B0E11;
    --bg-secondary: #07090B;
    --surface-primary: rgba(21, 24, 30, 0.9);
    --surface-secondary: rgba(30, 34, 42, 0.9);
    --text-primary: #FFFFFF;
    --text-secondary: #B0B8C4;
    --accent-500: #FF6B00;
    --success-500: #10B981;
    --warning-500: #F59E0B;
    --danger-500: #EF4444;
    --border-color: rgba(42, 47, 56, 0.8);
    --border-gold: rgba(255, 215, 0, 0.15);
}

/* ==================== 亮色主题 ==================== */
[data-theme="light"] {
    --bg-primary: #F8FAFC;
    --bg-secondary: #F1F5F9;
    --surface-primary: rgba(255, 255, 255, 0.9);
    --surface-secondary: rgba(248, 250, 252, 0.9);
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --accent-500: #FF6B00;
    --success-500: #10B981;
    --warning-500: #F59E0B;
    --danger-500: #EF4444;
    --border-color: rgba(226, 232, 240, 0.8);
    --border-gold: rgba(255, 215, 0, 0.1);
}

/* ==================== 基礎重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: var(--transition);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==================== 佈局 ==================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* 側邊欄 */
.admin-sidebar {
    width: var(--sidebar-width);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-gold);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: var(--transition);
    box-shadow: var(--glass-shadow);
}

.admin-sidebar-logo {
    padding: var(--space-6) var(--space-6);
    font-size: 20px;
    font-weight: bold;
    color: var(--accent-500);
    border-bottom: 1px solid var(--border-gold);
    letter-spacing: -0.5px;
    text-shadow: 0 0 10px var(--accent-500);
}

.admin-nav {
    padding: var(--space-5) 0;
}

.admin-nav-item {
    display: flex;
    align-items: center;
    padding: var(--space-3) var(--space-6);
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    margin: var(--space-1) var(--space-3);
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
}

.admin-nav-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.admin-nav-item:hover::before {
    opacity: 1;
    animation: rotate 15s linear infinite;
}

.admin-nav-item i {
    width: 24px;
    margin-right: var(--space-3);
    font-size: 18px;
    transition: var(--transition);
}

.admin-nav-item:hover,
.admin-nav-item.active {
    background: rgba(0, 0, 0, 0.2);
    color: var(--text-primary);
    transform: translateX(4px);
}

.admin-nav-item.active {
    color: var(--accent-500);
    border-left: 3px solid var(--accent-500);
    box-shadow: var(--neon-glow);
}

.admin-nav-item.active i {
    color: var(--accent-500);
    filter: drop-shadow(0 0 8px var(--accent-500));
}

/* 主內容 */
.admin-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-width: 0;
}

/* 頭部 */
.admin-header {
    height: var(--header-height);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-gold);
    padding: 0 var(--space-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--glass-shadow);
}

.admin-header h1 {
    font-size: 20px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.3px;
}

.admin-user {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.icon-btn {
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    color: var(--text-secondary);
    font-size: 20px;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: 50%;
    transition: var(--transition);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.icon-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.icon-btn:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.icon-btn:hover {
    border-color: var(--accent-500);
    color: var(--accent-500);
    transform: scale(1.1);
    box-shadow: var(--neon-glow);
}

/* 內容區域 */
.admin-content {
    padding: var(--space-8);
}

/* ==================== 通用組件 ==================== */

/* 按鈕 */
.btn-primary {
    padding: var(--space-2) var(--space-5);
    background: linear-gradient(135deg, var(--accent-500), var(--accent-400));
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    transition: var(--transition);
    box-shadow: var(--neon-glow);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn-primary:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--neon-glow-strong);
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(0.5);
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    padding: var(--space-2) var(--space-5);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    position: relative;
    overflow: hidden;
}

.btn-secondary::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn-secondary:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.btn-secondary:hover {
    border-color: var(--accent-500);
    color: var(--accent-500);
    transform: translateY(-2px);
    box-shadow: var(--neon-glow);
}

/* 篩選欄 */
.filters-bar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-6);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    align-items: center;
    border: 1px solid var(--border-gold);
    box-shadow: var(--glass-shadow);
}

.search-box {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.search-box i {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 16px;
    transition: var(--transition);
}

.search-box input {
    width: 100%;
    padding: var(--space-3) var(--space-3) var(--space-3) 40px;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.search-box input:focus {
    outline: none;
    border-color: var(--accent-500);
    box-shadow: var(--neon-glow);
}

.search-box input:focus + i {
    color: var(--accent-500);
    filter: drop-shadow(0 0 5px var(--accent-500));
}

.filter-select {
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    min-width: 140px;
    cursor: pointer;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23FF6B00' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-500);
    box-shadow: var(--neon-glow);
}

/* 表格 */
.table-container {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-gold);
    overflow-x: auto;
    margin-bottom: var(--space-6);
    box-shadow: var(--glass-shadow);
    position: relative;
}

.table-container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.02) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.table-container:hover::before {
    opacity: 1;
    animation: rotate 30s linear infinite;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 1000px;
}

.admin-table th {
    background: rgba(0, 0, 0, 0.3);
    padding: var(--space-4) var(--space-5);
    text-align: left;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
    white-space: nowrap;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-gold);
}

.admin-table td {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-gold);
    font-size: 14px;
    color: var(--text-primary);
}

.admin-table tbody tr {
    transition: var(--transition);
    position: relative;
}

.admin-table tbody tr::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.02) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.admin-table tbody tr:hover::before {
    opacity: 1;
    animation: rotate 20s linear infinite;
}

.admin-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.2);
}

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

/* 標籤 */
.badge {
    display: inline-block;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-full);
    font-size: 12px;
    font-weight: 500;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid transparent;
}

/* VIP等級標籤 */
.badge.vip0 { 
    background: rgba(176, 184, 196, 0.15); 
    color: var(--text-secondary);
    border-color: rgba(176, 184, 196, 0.3);
}
.badge.vip1 { 
    background: rgba(255, 215, 0, 0.15); 
    color: #ffd700;
    border-color: rgba(255, 215, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.2);
}
.badge.vip2 { 
    background: rgba(255, 122, 0, 0.15); 
    color: #ff7a00;
    border-color: rgba(255, 122, 0, 0.3);
    box-shadow: 0 0 10px rgba(255, 122, 0, 0.2);
}
.badge.vip3 { 
    background: rgba(124, 58, 237, 0.15); 
    color: #7c3aed;
    border-color: rgba(124, 58, 237, 0.3);
    box-shadow: 0 0 10px rgba(124, 58, 237, 0.2);
}
.badge.vip4 { 
    background: rgba(239, 68, 68, 0.15); 
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.2);
}

/* 狀態標籤 */
.badge.claimed,
.badge.settled,
.badge.live { 
    background: rgba(var(--success-rgb), 0.15); 
    color: var(--success-500);
    border-color: rgba(var(--success-rgb), 0.3);
    box-shadow: 0 0 10px rgba(var(--success-rgb), 0.2);
}
.badge.unclaimed,
.badge.pending,
.badge.finished,
.badge.draft { 
    background: rgba(var(--warning-rgb), 0.15); 
    color: var(--warning-500);
    border-color: rgba(var(--warning-rgb), 0.3);
    box-shadow: 0 0 10px rgba(var(--warning-rgb), 0.2);
}
.badge.cancelled { 
    background: rgba(var(--danger-rgb), 0.15); 
    color: var(--danger-500);
    border-color: rgba(var(--danger-rgb), 0.3);
    box-shadow: 0 0 10px rgba(var(--danger-rgb), 0.2);
}
.badge.upcoming,
.badge.published { 
    background: rgba(59, 130, 246, 0.15); 
    color: #3b82f6;
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.2);
}

/* 操作按鈕 */
.action-btn {
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    margin-right: var(--space-2);
    position: relative;
    overflow: hidden;
}

.action-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.action-btn:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.action-btn:hover {
    border-color: var(--accent-500);
    color: var(--accent-500);
    transform: translateY(-2px);
    box-shadow: var(--neon-glow);
}

.action-btn.danger:hover {
    border-color: var(--danger-500);
    color: var(--danger-500);
    box-shadow: 0 0 15px rgba(var(--danger-rgb), 0.3);
}

/* 分頁 */
.pagination {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    margin-top: var(--space-5);
}

.page-btn {
    min-width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.page-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.page-btn:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.page-btn:hover:not(:disabled) {
    border-color: var(--accent-500);
    color: var(--accent-500);
    transform: translateY(-2px);
    box-shadow: var(--neon-glow);
}

.page-btn.active {
    background: var(--accent-500);
    border-color: var(--accent-500);
    color: white;
    box-shadow: var(--neon-glow);
}

.page-btn.active::before {
    display: none;
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* 模態框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-2xl);
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-gold);
    box-shadow: var(--glass-shadow);
    position: relative;
}

.modal::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.05) 0%, transparent 70%);
    opacity: 0.3;
    animation: rotate 30s linear infinite;
    pointer-events: none;
}

.modal-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border-gold);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 10;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.modal-header h2 i {
    color: var(--accent-500);
    filter: drop-shadow(0 0 8px var(--accent-500));
}

.modal-close {
    background: rgba(0, 0, 0, 0.2);
    border: none;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    border: 1px solid var(--border-gold);
}

.modal-close:hover {
    border-color: var(--danger-500);
    color: var(--danger-500);
    transform: rotate(90deg);
    box-shadow: 0 0 15px rgba(var(--danger-rgb), 0.3);
}

.modal-body {
    padding: var(--space-6);
}

/* 表單 */
.form-group {
    margin-bottom: var(--space-4);
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
    font-weight: 500;
    letter-spacing: 0.3px;
}

.form-group label i {
    color: var(--accent-500);
    margin-right: var(--space-1);
    font-size: 12px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    background: rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-500);
    box-shadow: var(--neon-glow);
}

.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    margin-top: var(--space-5);
}

/* 統計卡片 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-5);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-gold);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: var(--transition);
    box-shadow: var(--glass-shadow);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.03) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.stat-card:hover::before {
    opacity: 1;
    animation: rotate 20s linear infinite;
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-500);
    box-shadow: var(--shadow-lg), var(--neon-glow);
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: var(--transition);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.stat-card:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-icon.blue { 
    background: rgba(59, 130, 246, 0.15); 
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.3);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.2);
}
.stat-icon.green { 
    background: rgba(var(--success-rgb), 0.15); 
    color: var(--success-500);
    border: 1px solid rgba(var(--success-rgb), 0.3);
    box-shadow: 0 0 15px rgba(var(--success-rgb), 0.2);
}
.stat-icon.orange { 
    background: rgba(var(--accent-rgb), 0.15); 
    color: var(--accent-500);
    border: 1px solid rgba(var(--accent-rgb), 0.3);
    box-shadow: 0 0 15px rgba(var(--accent-rgb), 0.2);
}
.stat-icon.purple { 
    background: rgba(124, 58, 237, 0.15); 
    color: #7c3aed;
    border: 1px solid rgba(124, 58, 237, 0.3);
    box-shadow: 0 0 15px rgba(124, 58, 237, 0.2);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: var(--space-1);
    letter-spacing: 0.3px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'JetBrains Mono', monospace;
}

/* 標籤頁 */
.admin-tabs {
    display: flex;
    gap: var(--space-2);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--space-2);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-gold);
    margin-bottom: var(--space-5);
    box-shadow: var(--glass-shadow);
}

.tab-btn {
    padding: var(--space-2) var(--space-5);
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tab-btn::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.05) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition);
}

.tab-btn:hover::before {
    opacity: 1;
    animation: rotate 8s linear infinite;
}

.tab-btn:hover {
    color: var(--accent-500);
}

.tab-btn.active {
    background: var(--accent-500);
    color: white;
    box-shadow: var(--neon-glow);
}

.tab-btn.active::before {
    display: none;
}

.tab-content {
    display: none;
}

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

/* 工具類 */
.text-success { 
    color: var(--success-500);
    text-shadow: 0 0 8px rgba(var(--success-rgb), 0.3);
}
.text-danger { 
    color: var(--danger-500);
    text-shadow: 0 0 8px rgba(var(--danger-rgb), 0.3);
}

.loading {
    text-align: center;
    padding: var(--space-10);
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.loading i {
    font-size: 40px;
    color: var(--accent-500);
    filter: drop-shadow(0 0 15px var(--accent-500));
    animation: spin 1s linear infinite;
}

.loading span {
    font-size: 15px;
}

/* ==================== 動畫定義 ==================== */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulse {
    0%, 100% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.8;
        transform: scale(1.05);
    }
}

/* ==================== 響應式 ==================== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }
    
    .admin-sidebar {
        transform: translateX(-100%);
        z-index: 1000;
    }
    
    .admin-sidebar.open {
        transform: translateX(0);
    }
    
    .admin-main {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }
    
    .admin-content {
        padding: var(--space-4);
    }
    
    .admin-header {
        padding: 0 var(--space-4);
    }
    
    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-box {
        min-width: 100%;
    }
    
    .filter-select {
        width: 100%;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .admin-tabs {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        flex: 1;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .admin-header h1 {
        font-size: 18px;
    }
    
    .stat-card {
        padding: var(--space-4);
    }
    
    .stat-icon {
        width: 48px;
        height: 48px;
        font-size: 24px;
    }
    
    .stat-value {
        font-size: 22px;
    }
    
    .modal {
        width: 95%;
    }
    
    .modal-body {
        padding: var(--space-4);
    }
    
    .action-btn {
        padding: var(--space-1) var(--space-2);
        font-size: 11px;
    }
}