:root {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-input: #252838;
    --border: #2d3148;
    --text-primary: #e4e6f0;
    --text-secondary: #8b8fa3;
    --accent: #6c5ce7;
    --accent-hover: #7c6df7;
    --success: #00b894;
    --warning: #fdcb6e;
    --danger: #e17055;
    --info: #74b9ff;
    --sidebar-width: 240px;
}

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

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

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* Login Page */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

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

.login-box p {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 30px;
    font-size: 14px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-secondary);
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--accent);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent);
    color: white;
    width: 100%;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

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

.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

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

.error-msg {
    color: var(--danger);
    font-size: 13px;
    margin-top: 12px;
    text-align: center;
    display: none;
}

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

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    font-size: 16px;
    font-weight: 600;
}

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

.sidebar-nav {
    flex: 1;
    padding: 12px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all 0.2s;
    margin-bottom: 4px;
}

.sidebar-nav a:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-nav a.active {
    background: var(--accent);
    color: white;
}

.sidebar-nav .nav-icon {
    width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-footer .user-info {
    font-size: 13px;
    color: var(--text-secondary);
}

.sidebar-footer .logout-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    padding: 4px 8px;
    border-radius: 4px;
}

.sidebar-footer .logout-btn:hover {
    color: var(--danger);
    background: rgba(225, 112, 85, 0.1);
}

.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 24px;
    min-width: 0;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 4px;
}

.page-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Stats Cards Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

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

.stat-card .stat-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

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

/* Chart Container */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px;
}

.chart-card h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.chart-card canvas {
    width: 100% !important;
    max-height: 250px;
}

/* Table */
.table-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 24px;
}

.table-card .table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.table-card .table-header h3 {
    font-size: 14px;
    font-weight: 600;
}

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

table th, table td {
    padding: 12px 20px;
    text-align: left;
    font-size: 13px;
    border-bottom: 1px solid var(--border);
}

table th {
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 11px;
    letter-spacing: 0.5px;
}

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

table tr:hover { background: rgba(108, 92, 231, 0.05); }

/* Badge */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
}

.badge-success { background: rgba(0, 184, 148, 0.15); color: var(--success); }
.badge-warning { background: rgba(253, 203, 110, 0.15); color: var(--warning); }
.badge-danger { background: rgba(225, 112, 85, 0.15); color: var(--danger); }
.badge-info { background: rgba(116, 185, 255, 0.15); color: var(--info); }
.badge-accent { background: rgba(108, 92, 231, 0.15); color: var(--accent); }

/* Status Indicator */
.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
}

.status-dot.online { background: var(--success); }
.status-dot.offline { background: var(--text-secondary); }

/* Logs */
.log-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.log-filters .btn.active {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.log-entry {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
    font-family: 'Fira Code', 'Cascadia Code', monospace;
    font-size: 12px;
    line-height: 1.5;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.log-entry:hover { background: rgba(108, 92, 231, 0.05); }

.log-entry .log-time {
    color: var(--text-secondary);
    white-space: nowrap;
    min-width: 180px;
}

.log-entry .log-level {
    min-width: 50px;
    font-weight: 600;
}

.log-entry .log-level.info { color: var(--info); }
.log-entry .log-level.error { color: var(--danger); }
.log-entry .log-level.warn { color: var(--warning); }

.log-entry .log-message {
    flex: 1;
    word-break: break-all;
}

.logs-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    max-height: 70vh;
    overflow-y: auto;
}

.logs-container::-webkit-scrollbar { width: 6px; }
.logs-container::-webkit-scrollbar-track { background: transparent; }
.logs-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* API Docs */
.endpoint-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    margin-bottom: 12px;
    overflow: hidden;
}

.endpoint-header {
    padding: 14px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.endpoint-header:hover { background: rgba(108, 92, 231, 0.05); }

.method-badge {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    min-width: 60px;
    text-align: center;
}

.method-badge.GET { background: rgba(0, 184, 148, 0.15); color: var(--success); }
.method-badge.POST { background: rgba(108, 92, 231, 0.15); color: var(--accent); }
.method-badge.PUT { background: rgba(253, 203, 110, 0.15); color: var(--warning); }
.method-badge.DELETE { background: rgba(225, 112, 85, 0.15); color: var(--danger); }

.endpoint-path {
    font-family: 'Fira Code', monospace;
    font-size: 13px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 60px;
        overflow: hidden;
    }
    .sidebar-header h2, .sidebar-header small,
    .sidebar-nav a span, .sidebar-footer .user-info { display: none; }
    .sidebar-nav a { justify-content: center; padding: 12px; }
    .main-content { margin-left: 60px; padding: 16px; }
    .charts-grid { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Password change modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

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

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 30px;
    width: 100%;
    max-width: 400px;
}

.modal h2 { font-size: 18px; margin-bottom: 20px; }

/* Loading spinner */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Empty state */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state .icon { font-size: 48px; margin-bottom: 16px; }