:root {
    --bg-dark: #0d0f1a;
    --bg-surface: #131629;
    --bg-card: #1a1e35;
    --bg-hover: #1f2440;
    --sidebar-width: 260px;
    --accent: #6c63ff;
    --accent-glow: rgba(108, 99, 255, 0.3);
    --accent-light: #8b85ff;
    --success: #00d4aa;
    --danger: #ff4757;
    --warning: #ffa502;
    --info: #3498db;
    --text-primary: #e8ecf0;
    --text-secondary: #8892a0;
    --text-muted: #556070;
    --border: rgba(255,255,255,0.07);
    --border-hover: rgba(108,99,255,0.4);
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 40px rgba(108, 99, 255, 0.15);
    --font: 'Inter', system-ui, sans-serif;
    --transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
}

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

html, body { height: 100%; }

body.admin-body {
    font-family: var(--font);
    background: var(--bg-dark);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ──── Login Layout ──────────────────────────────────────────────────────────── */
body.login-body {
    font-family: var(--font);
    background: var(--bg-dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: radial-gradient(ellipse 80% 80% at 50% -20%, rgba(108,99,255,0.15), transparent);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow), var(--shadow-glow);
}

.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo .logo-icon { font-size: 3rem; color: var(--accent); filter: drop-shadow(0 0 12px var(--accent)); }
.login-logo h1 { font-size: 1.75rem; font-weight: 700; color: var(--text-primary); margin-top: 8px; }
.login-logo p { color: var(--text-secondary); font-size: 0.875rem; margin-top: 4px; }

/* ──── Sidebar ───────────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    transition: var(--transition);
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 24px 20px;
    border-bottom: 1px solid var(--border);
}

.logo-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; color: white;
    flex-shrink: 0;
    box-shadow: 0 0 20px var(--accent-glow);
}

.logo-text { display: flex; flex-direction: column; }
.logo-main { font-size: 1rem; font-weight: 700; color: var(--text-primary); letter-spacing: -0.3px; }
.logo-sub { font-size: 0.65rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }

.sidebar-nav { flex: 1; padding: 16px 0; list-style: none; }

.nav-section-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    padding: 16px 20px 6px;
    pointer-events: none;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    margin: 2px 8px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-item a i { font-size: 1rem; width: 20px; text-align: center; }

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

.nav-item.active a {
    background: linear-gradient(135deg, rgba(108,99,255,0.2), rgba(108,99,255,0.1));
    color: var(--accent-light);
    border: 1px solid var(--border-hover);
}

.nav-item.active a::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: var(--accent);
    border-radius: 0 4px 4px 0;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), #a78bfa);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.875rem; color: white;
    flex-shrink: 0;
}

.user-details { flex: 1; overflow: hidden; }
.user-name { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { display: block; font-size: 0.7rem; color: var(--text-muted); }

.btn-logout {
    background: transparent; border: 1px solid var(--border);
    color: var(--text-muted); border-radius: var(--radius-sm);
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; transition: var(--transition);
}
.btn-logout:hover { background: var(--danger); border-color: var(--danger); color: white; }

/* ──── Main Content ──────────────────────────────────────────────────────────── */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: var(--transition);
}

/* ──── Topbar ────────────────────────────────────────────────────────────────── */
.topbar {
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: sticky; top: 0; z-index: 50;
    backdrop-filter: blur(12px);
}

.sidebar-toggle {
    background: transparent; border: 1px solid var(--border);
    color: var(--text-secondary); border-radius: var(--radius-sm);
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; font-size: 1.2rem; transition: var(--transition);
}
.sidebar-toggle:hover { background: var(--bg-hover); color: var(--text-primary); }

.breadcrumb-nav { flex: 1; font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }

.topbar-actions { display: flex; align-items: center; gap: 12px; }
.current-time { font-size: 0.8rem; color: var(--text-muted); font-feature-settings: "tnum"; }

/* ──── Toast Alerts ──────────────────────────────────────────────────────────── */
.alert-toast {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 16px 20px;
    margin: 16px 24px 0;
    border-radius: var(--radius);
    font-size: 0.875rem;
    animation: slideIn 0.3s ease;
    border: 1px solid;
}

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

.alert-toast.success { background: rgba(0,212,170,0.1); border-color: rgba(0,212,170,0.3); color: var(--success); }
.alert-toast.error { background: rgba(255,71,87,0.1); border-color: rgba(255,71,87,0.3); color: var(--danger); }
.alert-toast.api-key-alert { background: rgba(108,99,255,0.1); border-color: rgba(108,99,255,0.3); color: var(--accent-light); }
.alert-toast code { background: rgba(255,255,255,0.1); padding: 2px 6px; border-radius: 4px; font-size: 0.8rem; display: block; margin-top: 4px; word-break: break-all; }

.toast-close { margin-left: auto; background: none; border: none; color: inherit; cursor: pointer; opacity: 0.6; font-size: 1rem; padding: 0; }
.toast-close:hover { opacity: 1; }

/* ──── Page Content ──────────────────────────────────────────────────────────── */
.page-content { padding: 24px; flex: 1; }

.page-header {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 24px;
}
.page-title { font-size: 1.5rem; font-weight: 700; color: var(--text-primary); }
.page-subtitle { font-size: 0.875rem; color: var(--text-secondary); margin-top: 2px; }

/* ──── Cards ─────────────────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    transition: var(--transition);
}

.card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-glow); }

.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 20px; }
.card-title { font-size: 1rem; font-weight: 600; color: var(--text-primary); }

/* ──── Stat Cards ────────────────────────────────────────────────────────────── */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 24px; }

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.stat-card::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: var(--accent-gradient, var(--accent));
}
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-glow); border-color: var(--border-hover); }

.stat-icon {
    width: 48px; height: 48px;
    border-radius: var(--radius-sm);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.3rem; flex-shrink: 0;
}
.stat-icon.purple { background: rgba(108,99,255,0.2); color: var(--accent-light); }
.stat-icon.green { background: rgba(0,212,170,0.15); color: var(--success); }
.stat-icon.red { background: rgba(255,71,87,0.15); color: var(--danger); }
.stat-icon.orange { background: rgba(255,165,2,0.15); color: var(--warning); }
.stat-icon.blue { background: rgba(52,152,219,0.15); color: var(--info); }

.stat-info .stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.stat-info .stat-value { font-size: 1.6rem; font-weight: 700; color: var(--text-primary); line-height: 1.2; margin-top: 2px; }
.stat-info .stat-sub { font-size: 0.75rem; color: var(--text-secondary); margin-top: 2px; }

/* ──── Charts ────────────────────────────────────────────────────────────────── */
.charts-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 24px; }
@media (max-width: 1024px) { .charts-grid { grid-template-columns: 1fr; } }

/* ──── Tables ────────────────────────────────────────────────────────────────── */
.table-container { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}
.data-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    vertical-align: middle;
}
.data-table tbody tr { transition: var(--transition); }
.data-table tbody tr:hover { background: var(--bg-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }

/* ──── Badges / Status ──────────────────────────────────────────────────────── */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 3px 10px; border-radius: 20px;
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px;
}
.badge::before { content: ''; width: 5px; height: 5px; border-radius: 50%; background: currentColor; }
.badge-success { background: rgba(0,212,170,0.15); color: var(--success); }
.badge-danger { background: rgba(255,71,87,0.15); color: var(--danger); }
.badge-warning { background: rgba(255,165,2,0.15); color: var(--warning); }
.badge-info { background: rgba(52,152,219,0.15); color: var(--info); }
.badge-secondary { background: rgba(136,146,160,0.15); color: var(--text-secondary); }

/* ──── Buttons ───────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-size: 0.875rem; font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer; text-decoration: none;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-primary { background: var(--accent); color: white; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-light); box-shadow: 0 0 20px var(--accent-glow); color: white; }
.btn-outline { background: transparent; color: var(--text-secondary); border-color: var(--border); }
.btn-outline:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-hover); }
.btn-danger { background: transparent; color: var(--danger); border-color: rgba(255,71,87,0.3); }
.btn-danger:hover { background: rgba(255,71,87,0.15); }
.btn-success { background: transparent; color: var(--success); border-color: rgba(0,212,170,0.3); }
.btn-success:hover { background: rgba(0,212,170,0.15); }
.btn-sm { padding: 5px 10px; font-size: 0.8rem; }
.btn-icon { padding: 6px; border-radius: var(--radius-sm); }

/* ──── Forms ─────────────────────────────────────────────────────────────────── */
.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--text-secondary); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.5px; }
.form-control {
    width: 100%; padding: 10px 14px;
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius-sm); color: var(--text-primary);
    font-size: 0.875rem; font-family: var(--font);
    transition: var(--transition); outline: none;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-control::placeholder { color: var(--text-muted); }
select.form-control option { background: var(--bg-card); }

.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
@media (max-width: 640px) { .form-row { grid-template-columns: 1fr; } }

/* ──── Filters ───────────────────────────────────────────────────────────────── */
.filter-bar {
    display: flex; align-items: flex-end; gap: 12px; flex-wrap: wrap;
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 16px 20px; margin-bottom: 20px;
}

/* ──── Pagination ────────────────────────────────────────────────────────────── */
.pagination {
    display: flex; align-items: center; gap: 4px;
    justify-content: center; margin-top: 20px;
}
.page-link {
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: var(--radius-sm);
    border: 1px solid var(--border); color: var(--text-secondary);
    text-decoration: none; font-size: 0.875rem;
    transition: var(--transition);
}
.page-link:hover { background: var(--bg-hover); color: var(--text-primary); }
.page-link.active { background: var(--accent); border-color: var(--accent); color: white; }

/* ──── Modals ────────────────────────────────────────────────────────────────── */
.modal-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.6); backdrop-filter: blur(4px);
    z-index: 200; align-items: center; justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal-box {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: 16px; padding: 32px; max-width: 480px; width: 90%;
    box-shadow: var(--shadow), var(--shadow-glow);
    animation: modalIn 0.2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(0.95); } to { opacity: 1; transform: scale(1); } }
.modal-title { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; }

/* ──── Chart Placeholders ────────────────────────────────────────────────────── */
canvas { max-height: 280px; }

/* ──── Code Display ──────────────────────────────────────────────────────────── */
.json-payload {
    background: var(--bg-dark); border: 1px solid var(--border);
    border-radius: var(--radius-sm); padding: 16px;
    font-family: 'Courier New', monospace; font-size: 0.8rem;
    color: #a8d8a8; overflow: auto; max-height: 300px;
    white-space: pre-wrap; word-break: break-all;
}

/* ──── Scrollbar ─────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ──── Utility ───────────────────────────────────────────────────────────────── */
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }
.fw-bold { font-weight: 700; }
.fw-600 { font-weight: 600; }
.d-flex { display: flex; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.w-100 { width: 100%; }