/* =========================================================
   FloowUp – Luxury-Utilitarian Light Monitoring Theme
   Swiss precision meets mission control
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Space+Mono:wght@400;700&display=swap');

:root {
    /* Backgrounds */
    --bg-body: #fafbfc;
    --bg-card: #ffffff;
    --bg-card-hover: #f8f9fb;
    --bg-input: #ffffff;
    --bg-sidebar: #1b1f3b;
    --bg-sidebar-hover: rgba(255, 255, 255, 0.07);
    --bg-sidebar-active: rgba(79, 70, 229, 0.18);
    --bg-table-header: #f0f1f8;
    --bg-table-alt: #fafbfd;
    --bg-overlay: rgba(250, 251, 252, 0.88);

    /* Borders */
    --border: #e2e4ed;
    --border-subtle: #ecedf5;

    /* Text */
    --text-primary: #1b1f3b;
    --text-secondary: #6e7491;
    --text-muted: #9da2b9;
    --text-sidebar: rgba(255, 255, 255, 0.55);
    --text-sidebar-active: #ffffff;

    /* Accents */
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.18);
    --accent-subtle: rgba(79, 70, 229, 0.06);
    --accent-secondary: #06b6d4;

    /* Semantic colors */
    --success: #059669;
    --success-subtle: rgba(5, 150, 105, 0.08);
    --warning: #d97706;
    --warning-subtle: rgba(217, 119, 6, 0.08);
    --danger: #dc2626;
    --danger-subtle: rgba(220, 38, 38, 0.07);
    --info: #06b6d4;
    --info-subtle: rgba(6, 182, 212, 0.08);

    /* Severity */
    --critical: #dc2626;
    --high: #d97706;
    --medium: #d97706;
    --low: #06b6d4;

    /* Layout */
    --sidebar-width: 240px;
    --radius: 6px;
    --radius-lg: 10px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(27, 31, 59, 0.05);
    --shadow: 0 2px 8px rgba(27, 31, 59, 0.08);
    --shadow-lg: 0 8px 30px rgba(27, 31, 59, 0.10);
    --shadow-card: 0 1px 3px rgba(27, 31, 59, 0.06), 0 1px 2px rgba(27, 31, 59, 0.04);

    /* Fonts */
    --font-ui: 'Instrument Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'Space Mono', 'Courier New', monospace;

    /* Transition */
    --transition: 0.2s ease;
}

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

body {
    font-family: var(--font-ui);
    background: var(--bg-body);
    color: var(--text-primary);
    min-height: 100vh;
    font-size: 13px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent);
    color: #fff;
}

/* Scrollbar — refined, subtle */
::-webkit-scrollbar { width: 7px; height: 7px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #c8cad8; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #a0a3b5; }

/* ================================================================
   SIDEBAR — Fixed 240px, midnight blue, always visible
   ================================================================ */

.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    display: flex; flex-direction: column;
    z-index: 100;
    overflow: hidden;
    /* Subtle texture — fine diagonal lines for depth */
    background-image:
        linear-gradient(135deg, rgba(255,255,255,0.02) 25%, transparent 25%),
        linear-gradient(225deg, rgba(255,255,255,0.02) 25%, transparent 25%);
    background-size: 4px 4px;
}

.sidebar-logo {
    padding: 20px 22px 16px;
    font-size: 22px; font-weight: 700;
    color: #ffffff;
    white-space: nowrap;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    display: flex; flex-direction: column; gap: 2px;
    min-height: 64px;
    letter-spacing: -0.5px;
}
.sidebar-logo span {
    font-size: 9px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    display: block;
    margin-top: 2px;
}

.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.sidebar-nav a {
    display: flex; align-items: center; gap: 14px;
    padding: 11px 16px; margin-bottom: 2px;
    border-radius: var(--radius);
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 13px; font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    position: relative;
}
.sidebar-nav a:hover {
    background: var(--bg-sidebar-hover);
    color: rgba(255, 255, 255, 0.85);
}
.sidebar-nav a.active {
    background: var(--bg-sidebar-active);
    color: #ffffff;
}
.sidebar-nav a.active::before {
    content: '';
    position: absolute;
    left: 0; top: 6px; bottom: 6px;
    width: 3px;
    background: var(--accent-secondary);
    border-radius: 0 3px 3px 0;
    box-shadow: 0 0 8px rgba(6, 182, 212, 0.4);
}
.sidebar-nav a .icon {
    font-size: 18px; width: 24px; min-width: 24px;
    text-align: center; flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.btn-scan {
    width: 100%; padding: 11px 14px;
    background: var(--accent); color: #fff;
    border: none; border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 12px; font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    letter-spacing: 0.3px;
}
.btn-scan:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
    transform: translateY(-1px);
}
.btn-scan:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-logout {
    width: 100%;
    padding: 9px 14px;
    margin-top: 8px;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius);
    font-family: var(--font-ui);
    font-size: 12px; font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap; overflow: hidden;
}
.btn-logout:hover {
    border-color: rgba(220, 38, 38, 0.5);
    color: #fca5a5;
    background: rgba(220, 38, 38, 0.1);
}

/* ================================================================
   MAIN CONTENT
   ================================================================ */

.main-content {
    margin-left: var(--sidebar-width);
    padding: 32px;
    min-height: 100vh;
}

.page { display: none; }
.page.active { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.page-title {
    font-size: 22px; font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
    letter-spacing: -0.4px;
}

.section-header {
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.section-header h2 {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    white-space: nowrap;
}
.section-header::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-subtle);
}

/* ================================================================
   KPI CARDS — White cards with thick colored left border
   ================================================================ */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 14px;
    margin-bottom: 28px;
}
@media (max-width: 1200px) {
    .kpi-grid { grid-template-columns: repeat(3, 1fr); }
}

.kpi-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition);
    border-left: 4px solid var(--border);
    box-shadow: var(--shadow-card);
}
.kpi-card:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow);
}
.kpi-card:nth-child(1) { border-left-color: var(--accent); }
.kpi-card:nth-child(2) { border-left-color: var(--warning); }
.kpi-card:nth-child(3) { border-left-color: var(--danger); }
.kpi-card:nth-child(4) { border-left-color: var(--info); }
.kpi-card:nth-child(5) { border-left-color: var(--info); }
.kpi-card:nth-child(6) { border-left-color: var(--success); }

.kpi-label {
    font-size: 9px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 8px;
    line-height: 1.3;
    min-height: 24px;
    font-weight: 600;
}
.kpi-value {
    font-family: var(--font-mono);
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -1px;
}
.kpi-sub {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 8px;
    font-family: var(--font-mono);
    font-weight: 400;
    font-size: 11px;
}

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

/* Legacy stat-card support */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 14px;
    margin-bottom: 28px;
}
.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    border-left: 4px solid var(--border);
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}
.stat-card:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow);
}
.stat-card .label {
    font-size: 10px; color: var(--text-secondary);
    text-transform: uppercase; letter-spacing: 1px;
    margin-bottom: 8px; font-weight: 600;
}
.stat-card .value {
    font-family: var(--font-mono);
    font-size: 28px; font-weight: 700;
}
.stat-card .value.critical { color: var(--critical); }
.stat-card .value.high { color: var(--high); }
.stat-card .value.medium { color: var(--medium); }
.stat-card .value.low { color: var(--low); }
.stat-card .value.success { color: var(--success); }

/* ================================================================
   CHARTS
   ================================================================ */

.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    margin-bottom: 28px;
}
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
}
.chart-card:hover {
    box-shadow: var(--shadow);
}
.chart-title {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}
.chart-container {
    position: relative;
    height: 240px;
    width: 100%;
}

/* ================================================================
   TABLES — Clean, dense, light header tint
   ================================================================ */

.table-container {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: var(--shadow-card);
}
table {
    width: 100%; border-collapse: collapse;
}
th {
    background: var(--bg-table-header);
    padding: 11px 16px;
    text-align: left;
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    white-space: nowrap;
}
td {
    padding: 10px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
}
tr:hover td {
    background: var(--accent-subtle);
}
tr:last-child td { border-bottom: none; }
.clickable { cursor: pointer; }
.clickable:hover td { background: rgba(79, 70, 229, 0.05); }

/* Rate cell colors */
.rate-good { color: var(--success); font-weight: 600; font-family: var(--font-mono); }
.rate-warn { color: var(--warning); font-weight: 600; font-family: var(--font-mono); }
.rate-bad { color: var(--danger); font-weight: 600; font-family: var(--font-mono); }

/* Number formatting */
.num-right {
    text-align: right;
    font-family: var(--font-mono);
    font-variant-numeric: tabular-nums;
    font-size: 12px;
}

/* ================================================================
   BADGES
   ================================================================ */

.badge {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 3px 9px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    white-space: nowrap;
}
.badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.badge-critical { background: var(--danger-subtle); color: var(--critical); }
.badge-critical::before { background: var(--critical); box-shadow: 0 0 4px rgba(220, 38, 38, 0.5); }
.badge-high { background: rgba(217, 119, 6, 0.08); color: var(--high); }
.badge-high::before { background: var(--high); box-shadow: 0 0 4px rgba(217, 119, 6, 0.4); }
.badge-medium { background: var(--warning-subtle); color: var(--warning); }
.badge-medium::before { background: var(--warning); }
.badge-low { background: var(--info-subtle); color: var(--low); }
.badge-low::before { background: var(--low); }

.badge-open { background: var(--danger-subtle); color: var(--danger); }
.badge-open::before { background: var(--danger); box-shadow: 0 0 4px rgba(220, 38, 38, 0.5); }
.badge-pending_client { background: var(--warning-subtle); color: var(--warning); }
.badge-pending_client::before { background: var(--warning); }
.badge-in_progress { background: var(--info-subtle); color: var(--info); }
.badge-in_progress::before { background: var(--info); }
.badge-resolved { background: var(--success-subtle); color: var(--success); }
.badge-resolved::before { background: var(--success); }
.badge-closed { background: rgba(157, 162, 185, 0.12); color: var(--text-muted); }
.badge-closed::before { background: var(--text-muted); }

.badge-bounce { background: var(--danger-subtle); color: var(--danger); }
.badge-bounce::before { background: var(--danger); }
.badge-spam { background: var(--danger-subtle); color: var(--critical); }
.badge-spam::before { background: var(--critical); box-shadow: 0 0 4px rgba(220, 38, 38, 0.5); }
.badge-unsub { background: var(--warning-subtle); color: var(--warning); }
.badge-unsub::before { background: var(--warning); }
.badge-blacklist { background: rgba(139, 92, 246, 0.08); color: #7c3aed; }
.badge-blacklist::before { background: #7c3aed; }
.badge-custom { background: rgba(157, 162, 185, 0.12); color: var(--text-secondary); }
.badge-custom::before { background: var(--text-secondary); }

/* ================================================================
   HEALTH DOTS
   ================================================================ */

.health-dot {
    display: inline-block; width: 8px; height: 8px;
    border-radius: 50%; margin-right: 6px;
}
.health-green { background: var(--success); box-shadow: 0 0 6px rgba(5, 150, 105, 0.4); }
.health-yellow { background: var(--warning); box-shadow: 0 0 6px rgba(217, 119, 6, 0.4); }
.health-red { background: var(--danger); box-shadow: 0 0 6px rgba(220, 38, 38, 0.4); }

/* ================================================================
   FILTERS — Sticky filter bar, white with bottom shadow
   ================================================================ */

.filters {
    display: flex; gap: 10px; margin-bottom: 16px;
    flex-wrap: wrap; align-items: center;
}
.bi-filters {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    margin-bottom: 22px;
    align-items: flex-end;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: 0 4px 12px rgba(27, 31, 59, 0.06);
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.filter-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 120px;
    max-width: 200px;
}
.filter-group select,
.filter-group input[type="date"] {
    width: 100%;
}
.filter-group label {
    font-size: 9px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.filters select,
.filters input[type="text"],
.filters input[type="date"],
.filters input[type="number"] {
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 11px;
    border-radius: var(--radius);
    font-size: 12px;
    font-family: var(--font-ui);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.filters select:focus,
.filters input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* ================================================================
   BUTTONS
   ================================================================ */

.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: 8px 18px;
    border-radius: var(--radius);
    font-size: 12px; font-weight: 600;
    border: none; cursor: pointer;
    transition: all var(--transition);
    font-family: var(--font-ui);
    letter-spacing: 0.2px;
}
.btn-primary {
    background: var(--accent); color: #fff;
}
.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.3);
    transform: translateY(-1px);
}
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #047857; box-shadow: 0 4px 14px rgba(5,150,105,0.25); transform: translateY(-1px); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; transform: translateY(-1px); }
.btn-sm { padding: 5px 12px; font-size: 11px; }
.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
}

/* ================================================================
   ALERT DETAIL
   ================================================================ */

.alert-detail-header {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 22px;
    margin-bottom: 18px;
    box-shadow: var(--shadow-card);
}
.alert-detail-header h2 {
    font-size: 17px; margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 700;
}
.detail-meta {
    display: flex; gap: 18px; flex-wrap: wrap; margin-top: 12px;
}
.detail-meta .item {
    font-size: 12px;
    display: flex; align-items: center; gap: 5px;
}
.detail-meta .item .lbl {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.3px;
}

.status-actions {
    display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap;
}

/* ================================================================
   TIMELINE
   ================================================================ */

.timeline { margin-top: 18px; }
.timeline-item {
    display: flex; gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-subtle);
}
.timeline-item:last-child { border-bottom: none; }
.timeline-dot {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 4px;
    flex-shrink: 0;
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.timeline-content .meta {
    font-size: 11px; color: var(--text-muted); margin-bottom: 4px;
    font-family: var(--font-mono);
}
.timeline-content .msg {
    font-size: 13px; color: var(--text-secondary);
    line-height: 1.6;
}

/* ================================================================
   FOLLOW-UP FORM
   ================================================================ */

.followup-form {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-top: 18px;
    box-shadow: var(--shadow-card);
}
.followup-form h3 {
    font-size: 14px; margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
}
.form-group { margin-bottom: 14px; }
.form-group label {
    display: block; font-size: 10px; color: var(--text-muted);
    margin-bottom: 5px; text-transform: uppercase;
    letter-spacing: 0.8px; font-weight: 600;
}
.form-group select,
.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 9px 13px;
    border-radius: var(--radius);
    font-size: 13px;
    font-family: var(--font-ui);
    resize: vertical;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group textarea { min-height: 76px; }
.form-group select:focus,
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group select option,
.filters select option {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* ================================================================
   RULES FORM
   ================================================================ */

.rule-form-inline {
    display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    margin-bottom: 18px;
    box-shadow: var(--shadow-card);
}
.rule-form-inline .form-group { margin-bottom: 0; }

/* ================================================================
   TOAST NOTIFICATIONS
   ================================================================ */

.toast-container {
    position: fixed; top: 18px; right: 18px; z-index: 9999;
    display: flex; flex-direction: column; gap: 8px;
}
.toast {
    padding: 12px 18px;
    border-radius: var(--radius-lg);
    font-size: 13px; font-weight: 500;
    font-family: var(--font-ui);
    animation: toastIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 280px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    backdrop-filter: blur(12px);
}
.toast-success {
    background: rgba(5, 150, 105, 0.08);
    color: var(--success);
    border-color: var(--success);
}
.toast-error {
    background: rgba(220, 38, 38, 0.07);
    color: var(--danger);
    border-color: var(--danger);
}
.toast-info {
    background: rgba(6, 182, 212, 0.08);
    color: var(--info);
    border-color: var(--info);
}

@keyframes toastIn {
    from { transform: translateX(100%) translateY(-8px); opacity: 0; }
    to { transform: translateX(0) translateY(0); opacity: 1; }
}

/* ================================================================
   BACK LINK
   ================================================================ */

.back-link {
    display: inline-flex; align-items: center; gap: 6px;
    color: var(--text-muted);
    text-decoration: none; font-size: 12px;
    margin-bottom: 16px; cursor: pointer;
    font-weight: 500;
    transition: color var(--transition);
}
.back-link:hover { color: var(--accent); }

/* ================================================================
   LOADING / OVERLAY
   ================================================================ */

.loading {
    text-align: center; padding: 32px;
    color: var(--text-muted); font-size: 13px;
}

.loading-overlay {
    position: fixed;
    top: 0; left: var(--sidebar-width, 240px); right: 0; bottom: 0;
    background: rgba(250, 251, 252, 0.8);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 500;
    gap: 16px;
    transition: opacity 0.3s;
    backdrop-filter: blur(6px);
}
.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top: 3px solid var(--accent);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.loading-overlay .loading-text {
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.2px;
}

/* ================================================================
   LOGIN SCREEN
   ================================================================ */

.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-body);
    position: relative;
    overflow: hidden;
}

/* Subtle geometric background — precision grid pattern */
.login-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 30% 40%, rgba(79, 70, 229, 0.06) 0%, transparent 60%),
        radial-gradient(ellipse at 70% 60%, rgba(6, 182, 212, 0.04) 0%, transparent 50%);
    animation: loginBgShift 20s ease-in-out infinite alternate;
}
@keyframes loginBgShift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-2%, 1%) scale(1.03); }
}

/* Fine grid overlay */
.login-screen::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(27, 31, 59, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(27, 31, 59, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 1;
}
.login-logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--accent);
    text-align: center;
    margin-bottom: 6px;
    letter-spacing: -0.5px;
}
.login-subtitle {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 28px;
}
.login-card .form-group {
    margin-bottom: 18px;
}
.login-card .form-group label {
    display: block; font-size: 10px; color: var(--text-muted);
    margin-bottom: 5px; text-transform: uppercase;
    letter-spacing: 0.8px; font-weight: 600;
}
.login-card .form-group input {
    width: 100%;
    background: var(--bg-body);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 11px 14px;
    border-radius: var(--radius);
    font-size: 13px;
    font-family: var(--font-ui);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.login-card .form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
.login-card .form-group input::placeholder {
    color: var(--text-muted);
}
.login-btn {
    width: 100%;
    padding: 11px;
    font-size: 13px;
    margin-top: 6px;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.login-error {
    background: var(--danger-subtle);
    color: var(--danger);
    padding: 9px 14px;
    border-radius: var(--radius);
    font-size: 12px;
    margin-bottom: 14px;
    text-align: center;
    border: 1px solid rgba(220, 38, 38, 0.15);
}

/* ================================================================
   KPI DELTA INDICATORS
   ================================================================ */

.kpi-delta {
    font-size: 11px;
    font-weight: 600;
    margin-top: 4px;
    font-family: var(--font-mono);
    letter-spacing: -0.3px;
}
.kpi-delta.positive {
    color: var(--success);
}
.kpi-delta.positive::before {
    content: '\2191 ';
}
.kpi-delta.negative {
    color: var(--danger);
}
.kpi-delta.negative::before {
    content: '\2193 ';
}
.kpi-delta.neutral {
    color: var(--text-muted);
}

/* ================================================================
   RISK TABLE ROWS
   ================================================================ */

.risk-row-critical td {
    background: rgba(220, 38, 38, 0.06);
}
.risk-row-critical:hover td {
    background: rgba(220, 38, 38, 0.10);
}
.risk-row-warning td {
    background: rgba(217, 119, 6, 0.05);
}
.risk-row-warning:hover td {
    background: rgba(217, 119, 6, 0.09);
}

/* ================================================================
   RESPONSIVE
   ================================================================ */

@media (max-width: 1200px) {
    .charts-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar {
        width: 56px;
    }
    .sidebar-logo span,
    .sidebar-nav a span:not(.icon) {
        display: none;
    }
    .main-content {
        margin-left: 56px;
        padding: 20px;
    }
    .loading-overlay { left: 56px; }
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .bi-filters { flex-direction: column; align-items: stretch; }
}