:root {
    --primary: #2196F3;
    --primary-dark: #1976D2;
    --primary-light: #BBDEFB;
    --success: #4CAF50;
    --success-dark: #388E3C;
    --error: #f44336;
    --error-dark: #D32F2F;
    --warning: #FF9800;
    --warning-dark: #F57C00;
    --info: #00BCD4;
    --bg: #fafafa;
    --card: #ffffff;
    --text: #212121;
    --text-secondary: #757575;
    --divider: #e0e0e0;
    --shadow: 0 2px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 16px rgba(0,0,0,0.15);
    --radius: 8px;
    --radius-lg: 12px;
    --font: 'Microsoft YaHei', 'Segoe UI', sans-serif;
}

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

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    min-height: 44px;
    min-width: 80px;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover:not(:disabled) { background: var(--success-dark); }

.btn-error { background: var(--error); color: #fff; }
.btn-error:hover:not(:disabled) { background: var(--error-dark); }

.btn-warning { background: var(--warning); color: #fff; }
.btn-warning:hover:not(:disabled) { background: var(--warning-dark); }

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}
.btn-outline:hover:not(:disabled) { background: var(--primary-light); }

.btn-sm { padding: 8px 16px; font-size: 13px; min-height: 36px; }
.btn-lg { padding: 16px 32px; font-size: 16px; min-height: 52px; }

.card {
    background: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 20px;
    margin-bottom: 16px;
}

.card-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--divider);
}

.input-group { margin-bottom: 16px; }
.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.input-group input,
.input-group select,
.input-group textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font);
    border: 2px solid var(--divider);
    border-radius: var(--radius);
    outline: none;
    transition: border-color 0.2s;
    background: #fff;
}

.input-group input:focus,
.input-group select:focus,
.input-group textarea:focus {
    border-color: var(--primary);
}

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px;
    min-width: 400px;
    max-width: 90vw;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
}

.modal-body { margin-bottom: 20px; line-height: 1.6; }

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius);
    color: #fff;
    font-size: 14px;
    margin-bottom: 8px;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    max-width: 360px;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--error); }
.toast-warning { background: var(--warning); }
.toast-info { background: var(--primary); }

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.status-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.status-active { background: #E8F5E9; color: var(--success-dark); }
.status-disabled { background: #FFEBEE; color: var(--error-dark); }
.status-expired { background: #FFF3E0; color: var(--warning-dark); }

.loading {
    display: inline-block;
    width: 20px; height: 20px;
    border: 3px solid var(--divider);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--divider);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s;
}

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

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--divider);
    font-size: 14px;
}

th {
    background: #f5f5f5;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 13px;
}

tr:hover { background: #f9f9f9; }

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.pagination button {
    padding: 8px 14px;
    border: 1px solid var(--divider);
    border-radius: var(--radius);
    background: #fff;
    cursor: pointer;
    font-size: 13px;
}

.pagination button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }

.tabs {
    display: flex;
    border-bottom: 2px solid var(--divider);
    margin-bottom: 20px;
}

.tab {
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.2s;
}

.tab:hover { color: var(--primary); }
.tab.active { color: var(--primary); border-bottom-color: var(--primary); }