/**
 * Design System & Systematic Tokens
 * Compliance: WCAG 2.2 AA
 * 
 * 1. Palette Generation (Slate, Blue, Red, Emerald, Amber)
 * 2. Semantic Roles (Light/Dark Modes)
 * 3. Component Overrides
 */

:root {
    /* --- Base Palette: Slate (Neutrals) --- */
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-300: #cbd5e1;
    --slate-400: #94a3b8;
    --slate-500: #64748b;
    --slate-600: #475569;
    --slate-700: #334155;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    /* --- Base Palette: Brand (tenfold) --- */
    --brand-50: #f0f9ff;
    --brand-100: #e0f2fe;
    --brand-200: #bae6fd;
    --brand-300: #7dd3fc;
    --brand-400: #38bdf8;
    --brand-500: #0ea5e9;
    --brand-600: #0284c7;
    --brand-700: #0369a1;
    --brand-800: #075985;
    --brand-900: #0c4a6e;

    /* --- Base Palette: Blue (Primary) --- */
    --blue-50: #eff6ff;
    --blue-100: #dbeafe;
    --blue-200: #bfdbfe;
    --blue-300: #93c5fd;
    --blue-400: #60a5fa;
    --blue-500: #3b82f6;
    --blue-600: #2563eb; /* Primary Action */
    --blue-700: #1d4ed8; /* Primary Hover */
    --blue-800: #1e40af;
    --blue-900: #1e3a8a;
    --blue-950: #172554;

    /* --- Base Palette: Red (Destructive) --- */
    --red-50: #fef2f2;
    --red-100: #fee2e2;
    --red-600: #dc2626;
    --red-700: #b91c1c;

    /* --- Base Palette: Emerald (Success) --- */
    --emerald-50: #ecfdf5;
    --emerald-100: #d1fae5;
    --emerald-600: #059669;
    --emerald-700: #047857;

    /* --- Base Palette: Amber (Warning) --- */
    --amber-50: #fffbeb;
    --amber-100: #fef3c7;
    --amber-500: #f59e0b;
    --amber-600: #d97706;

    /* --- Semantic Tokens (Light Mode Default) --- */
    
    /* Backgrounds */
    --color-bg-app: var(--slate-100);       /* App background */
    --color-bg-surface: #ffffff;            /* Cards, Modals */
    --color-bg-surface-hover: var(--slate-50);
    --color-bg-input: #ffffff;
    
    /* Text */
    --color-text-primary: var(--slate-900); /* High contrast */
    --color-text-secondary: var(--slate-600);
    --color-text-muted: var(--slate-500);
    --color-text-on-brand: #ffffff;

    /* Borders */
    --color-border-subtle: var(--slate-200);
    --color-border-default: var(--slate-300);
    --color-border-focus: var(--brand-400);

    /* Interactive / Brand */
    --color-primary: var(--brand-600);
    --color-primary-hover: var(--brand-700);
    --color-primary-subtle: var(--brand-50);
    
    /* Status */
    --color-success: var(--emerald-600);
    --color-success-bg: var(--emerald-50);
    --color-danger: var(--red-600);
    --color-danger-bg: var(--red-50);
    --color-warning: var(--amber-500);
    --color-warning-bg: var(--amber-50);

    /* Focus Ring */
    --focus-ring-color: rgba(56, 189, 248, 0.35);
    --focus-ring-width: 3px;

    /* Legacy Mappings (for backward compatibility) */
    --primary-color: var(--color-primary);
    --primary-hover: var(--color-primary-hover);
    --text-main: var(--color-text-primary);
    --text-muted: var(--color-text-muted);
    --card-bg: var(--color-bg-surface);
    --light-bg: var(--color-bg-app);
    --border-color: var(--color-border-default);
}

/* Bootstrap 5 theme bridge */
:root {
    --bs-body-font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --bs-body-bg: var(--color-bg-app);
    --bs-body-color: var(--color-text-primary);
    --bs-border-color: var(--color-border-default);
    --bs-link-color: var(--color-primary);
    --bs-link-hover-color: var(--color-primary-hover);
    --bs-primary: var(--color-primary);
    --bs-secondary: var(--slate-600);
    --bs-success: var(--color-success);
    --bs-danger: var(--color-danger);
    --bs-warning: var(--color-warning);
    --bs-info: var(--blue-600);
    --bs-light: var(--slate-100);
    --bs-dark: var(--slate-900);
    --bs-border-radius: 0.9rem;
}

body {
    background-color: var(--color-bg-app);
    color: var(--color-text-primary);
    font-family: var(--bs-body-font-family);
}


/* Components */

/* Cards */
.card {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    color: var(--color-text-primary);
}

/* Inputs */
.form-control {
    background-color: var(--color-bg-input);
    border: 1px solid var(--color-border-default);
    color: var(--color-text-primary);
}
.form-control:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
    background-color: var(--color-bg-input);
    color: var(--color-text-primary);
}

/* Buttons */
.btn-primary {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-text-on-brand);
}

.btn-primary:hover, .btn-primary:focus, .btn-primary:active {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    color: var(--color-text-on-brand);
}

.btn-outline-primary {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background-color: var(--color-primary-subtle);
    color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

/* Bootstrap utilities */
.text-primary {
    color: var(--color-primary) !important;
}
.bg-primary {
    background-color: var(--color-primary) !important;
}
.border-primary {
    border-color: var(--color-primary) !important;
}
.badge-primary {
    background-color: var(--color-primary) !important;
    border-color: var(--color-primary) !important;
    color: var(--color-text-on-brand) !important;
}

/* Tables */
.table {
    color: var(--color-text-primary);
}

.table thead th {
    background-color: var(--color-bg-surface-hover);
    color: var(--color-text-secondary);
    border-bottom: 2px solid var(--color-border-subtle);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.table td, .table th {
    border-top: 1px solid var(--color-border-subtle);
    vertical-align: middle;
}

.table-hover tbody tr:hover {
    background-color: var(--color-bg-surface-hover);
}

/* Navbar */
.navbar {
    background-color: var(--color-bg-surface);
    border-bottom: 1px solid var(--color-border-subtle);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.navbar-brand, .nav-link {
    color: var(--color-text-secondary) !important;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary) !important;
}

.dropdown-menu {
    background-color: var(--color-bg-surface);
    border: 1px solid var(--color-border-subtle);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

.dropdown-item {
    color: var(--color-text-secondary);
}

.dropdown-item:hover, .dropdown-item:focus {
    background-color: var(--color-bg-surface-hover);
    color: var(--color-text-primary);
}

/* Badges / Status */
.badge-success {
    background-color: var(--color-success);
    color: #ffffff;
    border: 1px solid var(--color-success);
}

.badge-danger {
    background-color: var(--color-danger);
    color: #ffffff;
    border: 1px solid var(--color-danger);
}

.badge-warning {
    background-color: var(--color-warning);
    color: var(--slate-900);
    border: 1px solid var(--color-warning);
}

.badge-info {
    background-color: var(--blue-400);
    color: #ffffff;
    border: 1px solid var(--blue-400);
}

.badge-secondary {
    background-color: var(--slate-500);
    color: #ffffff;
    border: 1px solid var(--slate-500);
}

.badge-light {
    background-color: var(--color-bg-surface-hover);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-subtle);
}

/* Button Status Overrides */
.btn-success {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: #ffffff;
}
.btn-success:hover, .btn-success:focus {
    background-color: var(--emerald-700);
    border-color: var(--emerald-700);
    color: #ffffff;
}

.btn-danger {
    background-color: var(--color-danger);
    border-color: var(--color-danger);
    color: #ffffff;
}
.btn-danger:hover, .btn-danger:focus {
    background-color: var(--red-700);
    border-color: var(--red-700);
    color: #ffffff;
}

.btn-warning {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: var(--slate-900);
}
.btn-warning:hover, .btn-warning:focus {
    background-color: var(--amber-600);
    border-color: var(--amber-600);
    color: var(--slate-900);
}

/* Utilities */
.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.hover-lift:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05) !important;
}

.text-muted { color: var(--color-text-muted) !important; }
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-warning { color: var(--color-warning) !important; }
.bg-light { background-color: var(--color-bg-surface-hover) !important; }
.bg-white { background-color: var(--color-bg-surface) !important; }
.bg-primary { background-color: var(--color-primary) !important; }
.bg-success { background-color: var(--color-success) !important; }
.bg-danger { background-color: var(--color-danger) !important; }
.bg-warning { background-color: var(--color-warning) !important; }
.bg-info { background-color: var(--blue-400) !important; } /* Info usually maps to blue-400 or cyan */

.device-tracking-scroll {
    max-height: 420px;
    overflow-y: auto;
}

.device-tracking-scroll thead th {
    position: sticky;
    top: 0;
    z-index: 2;
}

.report-section-scroll {
    max-height: 420px;
    overflow: auto;
}

.report-section-scroll-lg {
    max-height: 520px;
    overflow: auto;
}

.report-section-scroll thead th,
.report-section-scroll-lg thead th {
    position: sticky;
    top: 0;
    z-index: 2;
    background-color: var(--color-bg-surface-hover);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg-app);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border-default);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

@media (max-width: 991.98px) {
    .navbar .container-fluid {
        padding-left: 0.75rem;
        padding-right: 0.75rem;
    }

    .navbar-nav .nav-link {
        padding: 0.5rem 0.75rem !important;
    }

    .dropdown-menu {
        width: 100%;
    }
}

@media (max-width: 767.98px) {
    .main-container {
        padding: 1rem !important;
    }

    .content-wrapper {
        padding: 1rem !important;
    }

    .content-wrapper.p-4,
    .content-wrapper.px-4,
    .content-wrapper.py-4 {
        padding: 1rem !important;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

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

    .card-header {
        padding: 1rem !important;
    }

    .card-body {
        padding: 1rem !important;
    }

    .card-body.p-5 {
        padding: 1.25rem !important;
    }

    .table-responsive {
        -webkit-overflow-scrolling: touch;
    }

    .table-responsive > .table {
        min-width: 720px;
    }

    .device-tracking-scroll {
        max-height: 320px;
    }

    .report-section-scroll {
        max-height: 320px;
    }

    .report-section-scroll-lg {
        max-height: 380px;
    }



    input,
    select,
    textarea,
    button {
        font-size: 16px;
    }
}

@media (max-width: 575.98px) {
    .navbar-brand.main-logo span {
        font-size: 0.95rem;
    }

    .btn {
        padding: 0.5rem 0.9rem;
    }
}