:root {
    --bg-color: #0b0c10;
    --glass-bg: rgba(25, 27, 38, 0.45);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    
    --primary-color: #6c5ce7;
    --primary-hover: #8172ea;
    --danger-color: #ff4757;
    --danger-hover: #ff6b81;
    --success-color: #2ed573;
    
    --text-main: #f1f2f6;
    --text-muted: #a4b0be;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

@keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

body {
    font-family: var(--font-family);
    background: linear-gradient(-45deg, #090a0f, #181428, #0e0a1f, #050814);
    background-size: 400% 400%;
    animation: gradientAnimation 12s ease infinite;
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.4); }

/* 毛玻璃容器基类 */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
}

/* Layout */
.layout-wrapper {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: rgba(255, 255, 255, 0.08); /* 白色透明高透 */
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    display: flex;
    flex-direction: column;
    padding: 20px 0;
    transition: var(--transition);
}

.sidebar-logo {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #a8c0ff 0%, #3f2b96 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-item {
    padding: 15px 25px;
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
    border-left: 3px solid transparent;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
    border-left-color: var(--primary-color);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.topbar {
    height: 70px;
    background: rgba(15, 16, 24, 0.3);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 30px;
}

.page-container {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
    animation: fadeIn 0.4s ease;
}

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

/* UI 组件 */
.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    color: white;
}

.btn-primary { background: var(--primary-color); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4); }
.btn-danger { background: var(--danger-color); }
.btn-danger:hover { background: var(--danger-hover); }
.btn-ghost { background: transparent; border: 1px solid var(--glass-border); }
.btn-ghost:hover { background: rgba(255,255,255,0.1); }

.input-group { margin-bottom: 20px; }
.input-label { display: block; margin-bottom: 8px; color: var(--text-muted); font-size: 14px; }
.input-control {
    width: 100%;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-main);
    font-family: var(--font-family);
    transition: var(--transition);
}
.input-control:focus { outline: none; border-color: var(--primary-color); background: rgba(0,0,0,0.4); }

/* 数据表格与列表 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}
.data-table th, .data-table td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid var(--glass-border);
}
.data-table th { color: var(--text-muted); font-weight: 500; font-size: 13px; text-transform: uppercase; }
.data-table tr:hover td { background: rgba(255,255,255,0.03); }

/* 工具栏：搜索与过滤 */
.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

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

/* 分页器 */
.pagination {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 25px;
    padding-top: 15px;
    border-top: 1px solid var(--glass-border);
}
.page-size-selector select {
    background: rgba(0,0,0,0.3);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 6px 10px;
    border-radius: 6px;
    outline: none;
}
.page-controls { display: flex; gap: 5px; }
.page-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border);
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-main);
    transition: var(--transition);
}
.page-btn:hover:not(:disabled) { background: var(--primary-color); border-color: var(--primary-color); }
.page-btn.active { background: var(--primary-color); border-color: var(--primary-color); }
.page-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* 提示框 */
#toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; display: flex; flex-direction: column; gap: 10px; }
.toast {
    padding: 12px 24px;
    border-radius: 8px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    animation: slideInRight 0.3s ease forwards;
}
.toast.success { border-left: 4px solid var(--success-color); }
.toast.error { border-left: 4px solid var(--danger-color); }
.toast.fade-out { animation: fadeOut 0.3s ease forwards; }

@keyframes slideInRight { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes fadeOut { to { opacity: 0; transform: translateY(-10px); } }

/* 加载动画 */
.initial-loading { display: flex; justify-content: center; align-items: center; height: 100vh; }
.spinner {
    width: 40px; height: 40px;
    border: 3px solid rgba(255,255,255,0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* 实用类 */
.text-danger { color: var(--danger-color); }
.text-success { color: var(--success-color); }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.gap-2 { gap: 0.5rem; }
.w-full { width: 100%; }

/* 全局模态框高透遮罩 */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(10, 10, 15, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}