:root {
    --bg-dark: #0f1117;
    --bg-card: #1a1d26;
    --bg-sidebar: #161920;
    --bg-hover: #232631;
    --border: #2a2e3b;
    --text-primary: #e8eaf0;
    --text-secondary: #9ca3af;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --purple: #8b5cf6;
    --radius: 10px;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.3), 0 2px 4px -1px rgba(0,0,0,0.2);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.5;
    overflow: hidden;
}

/* ─── Login ─────────────────────────────────────────────────────────────── */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1117 0%, #1a1d26 100%);
}

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

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo i {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 12px;
}

.login-logo h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 4px;
}

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

/* ─── Layout ────────────────────────────────────────────────────────────── */
.app {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.sidebar-brand {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 18px;
    font-weight: 700;
    border-bottom: 1px solid var(--border);
}

.sidebar-brand i {
    color: var(--accent);
    font-size: 22px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s;
    position: relative;
}

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

.nav-item.active {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent);
    font-weight: 500;
}

.nav-item .badge {
    margin-left: auto;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border);
}

.user-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-secondary);
    font-size: 13px;
}

.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.topbar {
    height: 60px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}

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

.status-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--success);
}

.status-indicator i {
    font-size: 8px;
}

.status-indicator.warning { color: var(--warning); }
.status-indicator.error { color: var(--danger); }

.content {
    flex: 1;
    overflow-y: auto;
    padding: 24px 28px;
}

.page { animation: fadeIn 0.2s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Cards & Grid ──────────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h3 {
    font-size: 15px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-header h3 i {
    color: var(--accent);
}

.card-body {
    padding: 24px;
}

.card-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    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;
    box-shadow: var(--shadow);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #fff;
}

.bg-blue { background: linear-gradient(135deg, #3b82f6, #2563eb); }
.bg-green { background: linear-gradient(135deg, #22c55e, #16a34a); }
.bg-purple { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.bg-orange { background: linear-gradient(135deg, #f59e0b, #d97706); }
.bg-red { background: linear-gradient(135deg, #ef4444, #dc2626); }
.bg-cyan { background: linear-gradient(135deg, #06b6d4, #0891b2); }

.stat-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 2px;
}

.stat-info p {
    color: var(--text-secondary);
    font-size: 13px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* ─── Tables ────────────────────────────────────────────────────────────── */
.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th {
    text-align: left;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

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

.table.compact td, .table.compact th {
    padding: 10px 12px;
}

/* ─── Forms ─────────────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 18px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.input-group {
    display: flex;
    align-items: center;
}

.input-group input {
    border-radius: 8px 0 0 8px;
    border-right: none;
}

.input-suffix {
    padding: 10px 14px;
    background: var(--bg-hover);
    border: 1px solid var(--border);
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
    font-size: 13px;
    white-space: nowrap;
}

/* ─── Buttons ───────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 8px;
    border: none;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

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

.btn-primary:hover { background: var(--accent-hover); }

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--border); }

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

.btn-danger:hover { background: #dc2626; }

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

.btn-sm { padding: 6px 12px; font-size: 12px; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
}

.btn-icon:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* ─── Badges & Tags ─────────────────────────────────────────────────────── */
.tag {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.tag-success { background: rgba(34,197,94,0.15); color: var(--success); }
.tag-warning { background: rgba(245,158,11,0.15); color: var(--warning); }
.tag-danger { background: rgba(239,68,68,0.15); color: var(--danger); }
.tag-info { background: rgba(6,182,212,0.15); color: var(--info); }
.tag-default { background: var(--bg-hover); color: var(--text-secondary); }

/* ─── Alerts & Boxes ────────────────────────────────────────────────────── */
.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 13px;
    margin-top: 12px;
}

.alert-error {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.2);
    color: var(--danger);
}

.alert-success {
    background: rgba(34,197,94,0.1);
    border: 1px solid rgba(34,197,94,0.2);
    color: var(--success);
}

.result-box {
    background: rgba(34,197,94,0.05);
    border: 1px solid rgba(34,197,94,0.2);
    border-radius: 8px;
    padding: 16px;
    margin-top: 16px;
}

.result-box h4 {
    margin-bottom: 8px;
    color: var(--success);
}

.result-box .copy-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 6px 0;
    font-size: 13px;
}

.result-box code {
    background: var(--bg-dark);
    padding: 4px 8px;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 12px;
}

.log-box {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    font-family: 'Fira Code', monospace;
    font-size: 12px;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
}

/* ─── Modal ─────────────────────────────────────────────────────────────── */
.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 100%;
    max-width: 480px;
    box-shadow: var(--shadow);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-body {
    padding: 24px;
    color: var(--text-secondary);
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* ─── Toast ─────────────────────────────────────────────────────────────── */
#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 18px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: toastIn 0.3s ease;
    min-width: 280px;
}

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

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

/* ─── Utilities ─────────────────────────────────────────────────────────── */
.loading {
    color: var(--text-secondary);
    font-style: italic;
    padding: 20px;
    text-align: center;
}

.text-muted { color: var(--text-secondary); }
.text-center { text-align: center; }

.health-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.health-item:last-child { border-bottom: none; }

.health-label { color: var(--text-secondary); font-size: 13px; }
.health-value { font-weight: 500; font-size: 13px; }

.health-bar-bg {
    height: 6px;
    background: var(--bg-dark);
    border-radius: 3px;
    margin-top: 8px;
    overflow: hidden;
}

.health-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* ─── Responsive ────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { width: 64px; }
    .sidebar-brand span, .nav-item span, .user-info span { display: none; }
    .stats-grid { grid-template-columns: 1fr; }
}

/* Toggle switch for modules modal */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}
.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}
.toggle-slider {
    position: absolute;
    inset: 0;
    background: var(--border);
    border-radius: 24px;
    transition: background 0.2s;
}
.toggle-slider::before {
    content: "";
    position: absolute;
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.toggle-switch input:checked + .toggle-slider {
    background: var(--success);
}
.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(20px);
}
