/* ============================================================
   Gemini API Gateway - 管理后台样式
   现代化 Dashboard 设计
   ============================================================ */

:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #21242f;
    --bg-hover: #2a2d3a;
    --bg-input: #181b24;
    --border: #2e3140;
    --border-focus: #5b6abf;
    --text-primary: #e4e6ed;
    --text-secondary: #9398a8;
    --text-muted: #6b7085;
    --accent: #6366f1;
    --accent-hover: #7c7ff7;
    --accent-light: rgba(99, 102, 241, 0.12);
    --success: #22c55e;
    --success-light: rgba(34, 197, 94, 0.12);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.12);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --info: #3b82f6;
    --info-light: rgba(59, 130, 246, 0.12);
    --radius: 10px;
    --radius-sm: 6px;
    --radius-lg: 14px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
    --transition: all 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* ============================================================
   登录页面
   ============================================================ */

.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-card h1 {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 8px;
}

.login-card .subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 32px;
}

.login-card .logo {
    text-align: center;
    font-size: 40px;
    margin-bottom: 16px;
}

/* ============================================================
   表单组件
   ============================================================ */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-input::placeholder {
    color: var(--text-muted);
}

select.form-input {
    cursor: pointer;
    appearance: none;
    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 10px center;
    background-repeat: no-repeat;
    background-size: 16px;
    padding-right: 36px;
}

/* ============================================================
   按钮
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 18px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

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

.btn-primary {
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-danger {
    background: var(--danger);
    color: #fff;
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-icon {
    padding: 6px 8px;
    font-size: 16px;
}

/* ============================================================
   导航栏
   ============================================================ */

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    height: 56px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand span.icon {
    font-size: 22px;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ============================================================
   数据大盘
   ============================================================ */

.dashboard {
    padding: 24px 28px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--border-focus);
}

.stat-card .label {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.stat-card .value {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-card .value.accent { color: var(--accent); }
.stat-card .value.success { color: var(--success); }
.stat-card .value.warning { color: var(--warning); }
.stat-card .value.info { color: var(--info); }

/* ============================================================
   面板头部
   ============================================================ */

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.section-title {
    font-size: 18px;
    font-weight: 600;
}

/* ============================================================
   表格
   ============================================================ */

.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.table-responsive {
    overflow-x: auto;
}

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

thead {
    background: var(--bg-secondary);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

td {
    padding: 14px 16px;
    border-top: 1px solid var(--border);
    font-size: 14px;
    white-space: nowrap;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

/* 密钥显示 */
.key-display {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;
    font-size: 13px;
    background: var(--bg-input);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.key-display .copy-btn {
    cursor: pointer;
    color: var(--text-muted);
    background: none;
    border: none;
    padding: 2px;
    font-size: 14px;
    transition: var(--transition);
}

.key-display .copy-btn:hover {
    color: var(--accent);
}

/* 进度条 */
.progress-bar {
    width: 100%;
    min-width: 120px;
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 4px;
}

.progress-bar .fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-bar .fill.normal { background: var(--accent); }
.progress-bar .fill.warning { background: var(--warning); }
.progress-bar .fill.danger { background: var(--danger); }

.quota-text {
    font-size: 12px;
    color: var(--text-secondary);
}

/* 状态标签 */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

/* 操作按钮组 */
.action-group {
    display: flex;
    gap: 6px;
}

/* Toggle 开关 */
.toggle {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 22px;
    cursor: pointer;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle .slider {
    position: absolute;
    inset: 0;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 11px;
    transition: var(--transition);
}

.toggle .slider::before {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    left: 2px;
    top: 2px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: var(--transition);
}

.toggle input:checked + .slider {
    background: var(--accent);
    border-color: var(--accent);
}

.toggle input:checked + .slider::before {
    transform: translateX(18px);
    background: #fff;
}

/* ============================================================
   弹窗 Modal
   ============================================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.95);
    transition: all 0.25s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 24px;
}

/* ============================================================
   日志页面
   ============================================================ */

.log-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.log-status .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.log-status .dot.success { background: var(--success); }
.log-status .dot.error { background: var(--danger); }

/* ============================================================
   空状态
   ============================================================ */

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 14px;
}

/* ============================================================
   Toast 通知
   ============================================================ */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    font-size: 14px;
    min-width: 280px;
    animation: slideIn 0.3s ease;
}

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

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

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

/* ============================================================
   Tabs
   ============================================================ */

.tabs {
    display: flex;
    gap: 2px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3px;
    margin-bottom: 24px;
    width: fit-content;
}

.tab-btn {
    padding: 7px 18px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent);
    color: #fff;
}

.tab-content {
    display: none;
}

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

/* ============================================================
   加载状态
   ============================================================ */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: var(--text-muted);
    gap: 8px;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================================
   响应式
   ============================================================ */

@media (max-width: 768px) {
    .dashboard {
        padding: 16px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .stat-card .value {
        font-size: 22px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .navbar {
        padding: 0 16px;
    }

    .modal {
        margin: 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}