/**
 * Design tokens — single source of truth for UI colors.
 * Loaded first via style.css. Token definitions only; no component rules.
 */

:root {
    /* Brand / semantic */
    --primary-color: #1e4db7;
    --primary-hover: #1a4499;
    --primary-active: #004aa1;
    --primary-bootstrap: #0d6efd;
    --primary-bootstrap-hover: #0a58ca;
    --primary-focus: #86b7fe;
    --primary-tint: #1a97f5;
    --primary-deep: #1565c0;
    --primary-mid: #60a5fa;
    --primary-light: #3b82f6;
    --primary-light-blue: #90caf9;
    --primary-pale: #3885d3;
    --primary-subtle-bg: #e6f3ff;
    --primary-subtle-bg-alt: #e3f2fd;
    --primary-subtle-border: #bbdefb;
    --primary-subtle-border-light: #bfdbfe;
    --primary-subtle-surface: #ebf3fe;
    --primary-subtle-highlight: #e7f1ff;
    --primary-input-fill: #e8f0fe;
    --primary-input-fill-rgb: rgb(232, 240, 254);
    --primary-deep-alt: #1a3f9a;
    --primary-hover-deep: #003d8a;
    --primary-hover-alt: #1d4ed8;
    --primary-deep-text: #1e40af;

    --primary-alpha-05: rgba(13, 110, 253, 0.05);
    --primary-alpha-10: rgba(30, 77, 183, 0.1);
    --primary-alpha-12: rgba(13, 110, 253, 0.12);
    --primary-alpha-20: rgba(30, 77, 183, 0.2);
    --primary-alpha-25: rgba(30, 77, 183, 0.25);
    --primary-alpha-30: rgba(30, 77, 183, 0.3);
    --primary-bootstrap-alpha-25: rgba(13, 110, 253, 0.25);
    --primary-bootstrap-alpha-10: rgba(0, 74, 161, 0.25);
    --primary-blue-alpha-20: rgba(21, 101, 192, 0.2);
    --primary-blue-alpha-10: rgb(37 99 235 / 0.1);
    --primary-blue-alpha-20-legacy: rgba(37, 99, 235, 0.2);
    --primary-info-alpha-10: rgba(59, 130, 246, 0.1);
    --primary-accent-alpha-25: rgba(52, 152, 219, 0.1);

    --success-color: #10b981;
    --success-bootstrap: #198754;
    --success-bootstrap-text: #0f5132;
    --success-stats: #39cb7f;
    --success-deep: #059669;
    --success-deep-text: #166534;
    --success-bg-subtle: #d1e7dd;
    --success-bg-light: #d4edda;
    --success-border-subtle: #c3e6cb;
    --success-text-emphasis: #155724;
    --success-surface: #f0fdf4;
    --success-surface-border: #bbf7d0;
    --success-brand: #27ae60;
    --success-brand-hover: #229954;

    --warning-color: #f59e0b;
    --warning-bootstrap: #ffc107;
    --warning-stats: #fdc90f;
    --warning-stats-orange: #fb8c00;
    --warning-deep: #d97706;
    --warning-bg-subtle: #fff3cd;
    --warning-text-emphasis: #664d03;
    --warning-surface: #fffbeb;
    --warning-surface-border: #fed7aa;
    --warning-brand: #f39c12;

    --danger-color: #ef4444;
    --danger-bootstrap: #dc3545;
    --danger-bootstrap-hover: #bb2d3b;
    --danger-bootstrap-active: #b02a37;
    --danger-stats: #fc4b6c;
    --danger-deep: #dc2626;
    --danger-text-dark: #991b1b;
    --danger-text-emphasis: #721c24;
    --danger-text-deep: #842029;
    --danger-bg-subtle: #f8d7da;
    --danger-bg-subtle-border: #f5c6cb;
    --danger-surface: #fef2f2;
    --danger-surface-border: #fecaca;
    --danger-alpha-25: rgba(220, 53, 69, 0.25);
    --danger-brand: #e74c3c;
    --danger-brand-hover: #c0392b;
    --danger-brand-alpha-15: rgba(231, 76, 60, 0.15);
    --danger-brand-alpha-20: rgba(231, 76, 60, 0.2);
    --danger-brand-alpha-30: rgba(231, 76, 60, 0.3);

    --info-color: #0ea5e9;
    --info-bootstrap: #0dcaf0;
    --info-stats: #0bb2fb;
    --info-stats-blue: #1a9bfc;
    --info-cyan: #06b6d4;
    --info-teal: #01bdac;
    --info-teal-light: #44d6cb;
    --info-teal-bootstrap: #20c997;
    --info-bg-subtle: #d1ecf1;
    --info-text-emphasis: #0c5460;
    --info-surface: #f0f9ff;
    --info-surface-border: #bae6fd;
    --info-brand: #3498db;

    /* Text */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --text-emphasis: #495057;
    --text-muted: #6c757d;
    --text-muted-alt: #777e89;
    --text-body-muted: #67757c;
    --text-body: #212529;
    --text-strong: #334155;
    --text-stronger: #1e293b;
    --text-tooltip: #333333;
    --text-tooltip-sub: #444444;
    --text-gray-700: #374151;
    --text-gray-800: #4f5467;
    --text-gray-900: #546269;
    --text-dark: #11142d;
    --text-dark-alt: #223640;
    --text-brand-dark: #2c3e50;
    --text-brand-muted: #7f8c8d;
    --text-brand-slate: #34495e;
    --text-brand-border: #bdc3c7;
    --text-brand-surface: #ecf0f1;

    /* Surfaces */
    --bg-white: #ffffff;
    --bg-gray-50: #f9fafb;
    --bg-gray-100: #f3f4f6;
    --bg-surface-subtle: #f8f9fa;
    --bg-surface-muted: #f6f8fb;
    --bg-surface-alt: #f8fafc;
    --bg-surface-hover: #f1f5f9;
    --bg-surface-gray: #f1f1f1;
    --bg-surface-blue: #f1f9ff;
    --bg-surface-bootstrap: #ecf0f2;
    --bg-surface-section: #f1f3f5;
    --bg-disabled: #e9ecef;
    --bg-hover-light: #e2e8f0;
    --bg-scrollbar: #c1c1c1;
    --bg-scrollbar-hover: #a8a8a8;
    --bg-neutral: #e0e0e0;

    /* Borders */
    --border-color: #e5e7eb;
    --border-color-muted: #dee2e6;
    --border-color-input: #ced4da;
    --border-color-light: #dfe5ef;
    --border-color-ui: #e1e5e9;
    --border-color-slate: #cbd5e1;
    --border-color-muted-alt: #94a3b8;

    /* Neutrals */
    --color-black: #000000;
    --color-white: #ffffff;

    /* Notifications */
    --notification-bg: var(--bg-white);
    --notification-border: var(--border-color);
    --notification-hover: var(--bg-surface-alt);
    --notification-unread: #dbeafe;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-black-05: rgb(0 0 0 / 0.05);
    --shadow-black-05-rgba: rgba(0, 0, 0, 0.05);
    --shadow-black-18: rgba(0, 0, 0, 0.18);
    --shadow-black-35: rgba(0, 0, 0, 0.35);
    --shadow-black-45: rgba(0, 0, 0, 0.45);
    --primary-alpha-06: rgba(30, 77, 183, 0.06);
    --primary-alpha-18: rgba(30, 77, 183, 0.18);
    --primary-active-alpha-10: rgba(0, 74, 161, 0.1);
    --primary-deep-alpha-10: rgba(0, 26, 161, 0.1);
    --primary-legacy-alpha-05: rgba(0, 123, 255, 0.05);
    --primary-subtle-border-lighter: #b6d4fe;
    --border-color-bootstrap-500: #adb5bd;
    --text-bootstrap-dark: #343a40;
    --overlay-white-95: rgba(255, 255, 255, 0.95);
    --brand-legacy-blue-hover: #0056b3;
    --success-legacy: #28a745;
    --text-muted-bootstrap-secondary: #545b62;
    --text-muted-certificate: #666666;
    --certificate-bronze: #8b4513;
    --certificate-gold: #b8860b;
    --border-color-certificate: #cccccc;
    --certificate-shadow: rgba(0, 51, 102, 0.1);
    --shadow-black-08: rgba(0, 0, 0, 0.08);
    --shadow-black-10: rgba(0, 0, 0, 0.1);
    --shadow-black-12: rgba(0, 0, 0, 0.12);
    --shadow-black-15: rgba(0, 0, 0, 0.15);
    --shadow-black-16: rgba(0, 0, 0, 0.16);
    --shadow-black-20: rgba(0, 0, 0, 0.2);
    --shadow-black-30: rgba(0, 0, 0, 0.3);
    --shadow-black-40: rgb(0 0 0 / 0.4);
    --shadow-black-50: rgba(0, 0, 0, 0.5);
    --shadow-stats-card: 0px 15px 30px rgba(0, 0, 0, 0.12);
    --shadow-stats-card-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    --shadow-white-20: rgba(255, 255, 255, 0.2);

    /* Focus */
    --focus-ring-color: var(--primary-color);
    --focus-ring-width: 2px;
    --focus-ring-offset: 2px;

    /* Loading overlays */
    --overlay-loading: rgb(255 255 255 / 0.72);
    --overlay-loading-dark: rgb(17 24 39 / 0.72);

    /* Stats-card palette (UI chrome, not chart series) */
    --bs-blue: var(--info-stats-blue);
    --bs-purple: #7460ee;
    --bs-pink: #e83e8c;
    --bs-red: var(--danger-stats);
    --bs-orange: var(--warning-stats-orange);
    --bs-yellow: var(--warning-stats);
    --bs-green: var(--success-stats);
    --bs-teal: var(--info-teal-bootstrap);
    --bs-cyan: var(--info-stats);
    --bs-black: var(--color-black);
    --bs-white: var(--color-white);
    --bs-gray: var(--text-muted);
    --bs-gray-dark: var(--text-dark);
    --bs-gray-100: var(--bg-surface-muted);
    --bs-gray-200: var(--bg-surface-bootstrap);
    --bs-gray-300: var(--bg-surface-blue);
    --bs-gray-400: var(--border-color-input);
    --bs-gray-500: var(--text-gray-900);
    --bs-gray-600: var(--text-muted);
    --bs-gray-700: var(--text-gray-800);
    --bs-gray-800: var(--text-dark);
    --bs-gray-900: var(--text-dark-alt);
    --bs-primary: var(--primary-bootstrap);
    --bs-secondary: var(--text-muted);
    --bs-success: var(--success-stats);
    --bs-info: var(--info-stats);
    --bs-warning: var(--warning-stats);
    --bs-danger: var(--danger-stats);
    --bs-light: var(--bg-surface-muted);
    --bs-dark: var(--text-dark);
    --bs-muted: var(--text-muted-alt);
    --bs-indigo: #6610f2;
    --bs-light-indigo: var(--primary-subtle-surface);
    --bs-box-shadow: var(--shadow-stats-card);
    --bs-border-radius-xl: 12px;

    /* Auth / marketing gradients (login, error pages) */
    --gradient-auth-start: #667eea;
    --gradient-auth-end: #764ba2;
    --brand-legacy-blue: #007bff;

    /* Calendar / material accents */
    --calendar-highlight: #2196f3;
    --calendar-highlight-deep: #2563eb;
    --calendar-success-accent: #2ea66b;
    --calendar-success-bright: #1b9f5a;

    /* Chart series (canvas — resolve via getComputedStyle in JS) */
    --chart-series-pink: #f093fb;
    --chart-series-blue-light: #4facfe;
    --chart-series-cyan: #00f2fe;
    --chart-series-orange: #ffb347;
    --chart-series-coral: #ff758c;
    --chart-series-purple: #6f42c1;
    --chart-series-violet: #8b5cf6;
    --surface-grid-line: #e7e7e7;
    --surface-grid-fill: #f3f3f3;
    --chart-gradient-auth-alpha-10: rgba(102, 126, 234, 0.1);

    /* Misc UI leftovers */
    --shadow-black-075: rgba(0, 0, 0, 0.075);
    --shadow-black-175: rgba(0, 0, 0, 0.175);
    --shadow-card-muted: rgba(145, 158, 171, 0.12);
    --primary-tint-alpha-10: rgba(26, 151, 245, 0.1);
    --warning-text-dark: #856404;
    --surface-neutral-light: #f0f0f0;
    --surface-report: #f3f6fa;
    --surface-report-alt: #f8fbff;
    --surface-report-header: #e8f1fb;
    --surface-report-border: #b8cfe8;
    --surface-report-deep: #1a3a5c;
    --surface-notification: #e0f2fe;
    --surface-maintenance: #f5f7fb;
    --surface-maintenance-alt: #e3e7f0;
    --surface-maintenance-card: #fefefe;
    --text-maintenance: #222222;
    --text-slate-600: #4b5563;
    --danger-maintenance: #b91c1c;
    --danger-alpha-12: rgba(248, 113, 113, 0.12);
    --danger-alpha-40: rgba(248, 113, 113, 0.4);
    --slate-alpha-40: rgba(148, 163, 184, 0.4);
    --slate-alpha-12: rgba(15, 23, 42, 0.12);
    --primary-room-deep: #0d3a8c;
    --brand-navy: #003366;
    --border-color-faint: #dddddd;
    --border-color-pale: #eeeeee;
    --material-blue: #2196f3;
}

.dark-mode {
    --primary-color: #3b82f6;
    --primary-hover: #1a4499;
    --primary-active: #004aa1;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #0ea5e9;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-light: #9ca3af;
    --bg-white: #1f2937;
    --bg-gray-50: #111827;
    --bg-gray-100: #374151;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --notification-bg: #1f2937;
    --notification-border: #374151;
    --notification-hover: #374151;
    --notification-unread: #1e3a8a;
    --focus-ring-color: var(--primary-color);
}