:root {
    --fs-bg: #f4f6f8;
    --fs-surface: #ffffff;
    --fs-border: #e2e8f0;
    --fs-text: #1e293b;
    --fs-text-muted: #64748b;
    --fs-primary: #2563eb;
    --fs-primary-hover: #1d4ed8;
    --fs-radius: 0.75rem;
    --fs-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
    --fs-shadow-hover: 0 4px 16px rgba(15, 23, 42, 0.1);
}

body {
    background-color: var(--fs-bg);
    color: var(--fs-text);
}

.app-navbar {
    border-bottom: 1px solid var(--fs-border);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.app-navbar .navbar-brand {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.app-page {
    padding-block: 1.5rem 2.5rem;
}

.page-hero {
    background: linear-gradient(135deg, var(--fs-surface) 0%, #eef2f7 100%);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    padding: 1.25rem 1.5rem;
    margin-bottom: 1.25rem;
    box-shadow: var(--fs-shadow);
}

.page-hero-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    letter-spacing: -0.02em;
}

.page-hero-subtitle {
    color: var(--fs-text-muted);
    font-size: 0.9rem;
    margin: 0.35rem 0 0;
}

.stats-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.stat-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--fs-border);
    background: var(--fs-surface);
}

.stat-pill-online {
    color: #0f5132;
    background: #d1e7dd;
    border-color: #badbcc;
}

.stat-pill-offline {
    color: #842029;
    background: #f8d7da;
    border-color: #f5c2c7;
}

.stat-pill-total {
    color: var(--fs-text);
}

.app-card {
    background: var(--fs-surface);
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    box-shadow: var(--fs-shadow);
    margin-bottom: 1rem;
}

.app-card .card-body {
    padding: 1.25rem;
}

.toolbar-card .card-body {
    padding: 1rem 1.25rem;
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    min-height: 1.5rem;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    background: #e7f1ff;
    border: 1px solid #b6d4fe;
    color: #084298;
}

.filter-chip button {
    border: none;
    background: transparent;
    padding: 0;
    line-height: 1;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
}

.filter-chip button:hover {
    opacity: 1;
}

.scanners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr));
    gap: 1rem;
}

.home-links {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.home-link-card {
    display: block;
    padding: 1.25rem;
    border-radius: var(--fs-radius);
    border: 1px solid var(--fs-border);
    background: var(--fs-surface);
    text-decoration: none;
    color: inherit;
    box-shadow: var(--fs-shadow);
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.home-link-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--fs-shadow-hover);
    border-color: #cbd5e1;
    color: inherit;
}

.home-link-card i {
    font-size: 1.5rem;
    color: var(--fs-primary);
    margin-bottom: 0.5rem;
    display: block;
}

.home-link-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.35rem;
}

.home-link-card p {
    font-size: 0.85rem;
    color: var(--fs-text-muted);
    margin: 0;
}

footer {
    border-top: 1px solid var(--fs-border);
}

@media (max-width: 575.98px) {
    .page-hero {
        padding: 1rem;
    }

    .page-hero-title {
        font-size: 1.25rem;
    }

    .setting-row {
        grid-template-columns: 1fr;
    }
}

/* System section */
.setting-row {
    display: grid;
    grid-template-columns: minmax(140px, 1fr) minmax(200px, 2fr) auto;
    gap: 0.75rem;
    align-items: center;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--fs-border);
}

.setting-row:last-child {
    border-bottom: none;
}

.setting-row .form-label {
    margin-bottom: 0;
    font-weight: 500;
    font-size: 0.9rem;
}

.setting-actions {
    display: flex;
    gap: 0.35rem;
    flex-shrink: 0;
}

.settings-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.system-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
    gap: 1rem;
}

.system-metric {
    padding: 1rem 1.1rem;
    border: 1px solid var(--fs-border);
    border-radius: var(--fs-radius);
    background: linear-gradient(180deg, var(--fs-surface) 0%, #f8fafc 100%);
}

.system-metric-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--fs-text-muted);
    margin-bottom: 0.35rem;
    display: flex;
    align-items: center;
}

.system-metric-value {
    font-size: 0.9rem;
    font-weight: 600;
    line-height: 1.4;
    word-break: break-word;
}

.system-live-dot {
    display: inline-block;
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background: #22c55e;
    margin-right: 0.35rem;
    animation: system-pulse 2s ease-in-out infinite;
}

@keyframes system-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.45; }
}

.users-table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--fs-text-muted);
    font-weight: 600;
    border-bottom-width: 1px;
}

.users-table td {
    vertical-align: middle;
}

.users-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    align-items: center;
}

.role-badge {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}