/* ==========================================================================
 * GPS Monitoring System — Custom Styles
 * Modern, clean, professional UI built on top of Bootstrap 5.3
 * ========================================================================== */

/* ---------- Design Tokens ---------- */

:root {
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif, "Apple Color Emoji",
        "Segoe UI Emoji";
    --font-mono: "SFMono-Regular", Menlo, Monaco, Consolas, "Liberation Mono",
        "Courier New", monospace;

    /* Primary palette */
    --color-primary: #4361ee;
    --color-primary-rgb: 67, 97, 238;
    --color-primary-hover: #3a56e0;
    --color-primary-light: #e7e9f5;
    --color-primary-soft: #eef0fb;

    /* Semantic */
    --color-success: #28a745;
    --color-success-light: #e6f4ea;
    --color-success-soft: #d4edda;
    --color-warning: #ffc107;
    --color-warning-light: #fff8e1;
    --color-warning-soft: #fff3cd;
    --color-warning-dark: #d39e00;
    --color-danger: #dc3545;
    --color-danger-light: #fde8ea;
    --color-danger-soft: #f8d7da;
    --color-info: #17a2b8;
    --color-info-light: #e1f0f3;
    --color-info-soft: #d1ecf1;
    --color-secondary: #6c757d;
    --color-secondary-light: #e9ecef;

    /* Neutrals */
    --color-bg: #f5f6fa;
    --color-bg-body: #f5f6fa;
    --color-bg-card: #ffffff;
    --color-bg-sidebar: #1e2538;
    --color-bg-sidebar-hover: #2d3748;
    --color-bg-sidebar-active: #4361ee;
    --color-border: #e2e6ea;
    --color-border-light: #eef1f5;
    --color-text: #2c3445;
    --color-text-muted: #6c757d;
    --color-text-light: #9aa0a6;
    --color-heading: #1a1a2e;

    /* Layout */
    --sidebar-width: 260px;
    --sidebar-width-collapsed: 60px;
    --border-radius: 0.5rem;
    --border-radius-sm: 0.375rem;
    --border-radius-lg: 0.75rem;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.08), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 15px rgba(0, 0, 0, 0.06);

    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

/* ---------- Base / Reset ---------- */

html, body {
    height: 100%;
    margin: 0;
    font-family: var(--font-sans);
    font-size: 0.925rem;
    color: var(--color-text);
    background-color: var(--color-bg-body);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    overflow-x: hidden;
}

/* Typography hierarchy */

h1 { font-size: 1.75rem; font-weight: 700; line-height: 1.2; }
h2 { font-size: 1.35rem; font-weight: 600; line-height: 1.3; }
h3 { font-size: 1.15rem; font-weight: 600; line-height: 1.3; }
h4 { font-size: 1rem; font-weight: 600; line-height: 1.4; }
h5 { font-size: 0.9rem; font-weight: 600; line-height: 1.4; }
h6 { font-size: 0.8rem; font-weight: 600; line-height: 1.4; }

.page-title {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: 0;
}

.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-warning { color: var(--color-warning-dark) !important; }
.text-danger { color: var(--color-danger) !important; }
.text-info { color: var(--color-info) !important; }
.text-muted { color: var(--color-text-muted) !important; }

/* ---------- Layout: App Shell ---------- */

.app-shell {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    flex: 0 0 var(--sidebar-width);
    max-width: var(--sidebar-width);
    background: var(--color-bg-sidebar);
    display: flex;
    flex-direction: column;
    transition: width var(--transition-normal);
    overflow-y: auto;
}

.sidebar.collapsed {
    max-width: var(--sidebar-width-collapsed);
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

.sidebar.collapsed .sidebar-title {
    display: none;
}

.sidebar.collapsed .sidebar-label {
    display: none;
}

.sidebar.collapsed .sidebar-icon {
    justify-content: center;
}

.main-content {
    flex: 1 1 auto;
    overflow-y: auto;
    background-color: var(--color-bg-body);
}

.page-wrapper {
    padding: 1.5rem;
}

/* ---------- Sidebar Navigation ---------- */

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    text-decoration: none;
    color: var(--color-primary);
    font-weight: 700;
    font-size: 1.1rem;
    transition: opacity var(--transition-fast);
}

.sidebar-brand:hover {
    color: var(--color-primary-hover);
    opacity: 0.9;
}

.sidebar-nav {
    list-style: none;
    margin: 1rem 0;
    padding: 0;
}

.sidebar-nav .nav-item {
    margin: 0.15rem 0.5rem;
}

.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.55rem 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    font-weight: 500;
    font-size: 0.9rem;
}

.sidebar-nav .nav-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.08);
}

.sidebar-nav .nav-link.active {
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary), #5a75f0);
    box-shadow: 0 2px 8px rgba(67, 97, 238, 0.35);
}

.sidebar-nav .nav-link i {
    min-width: 1.2rem;
    text-align: center;
    font-size: 0.95rem;
}

.sidebar-footer {
    margin-top: auto;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 0.75rem 1.25rem;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.85rem;
}

.sidebar-user .badge {
    background-color: rgba(255, 255, 255, 0.15);
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

/* ---------- Header ---------- */

.top-header {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    width: 32px;
    height: 32px;
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
}

.breadcrumbs a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 500;
}

.breadcrumbs .separator {
    color: var(--color-text-muted);
}

.breadcrumbs .current {
    color: var(--color-text-muted);
    font-weight: 400;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ---------- Cards ---------- */

.card {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-fast);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    color: var(--color-heading);
    padding: 0.75rem 1rem;
    background-color: #fafbfc;
}

.card-body {
    padding: 1rem;
}

.stat-card {
    border: none;
    border-radius: var(--border-radius);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    min-width: 160px;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-card .stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 0.4rem;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}

/* ---------- Buttons ---------- */

.btn {
    border-radius: var(--border-radius-sm);
    font-weight: 500;
    transition: transform 0.1s ease, box-shadow var(--transition-fast);
    border: 1px solid transparent;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn-sm, .btn-sm.btn {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
}

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

.btn-success:hover {
    background-color: #218838;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.3);
}

.btn-warning {
    background-color: var(--color-warning);
    border-color: var(--color-warning);
    color: #212529;
}

.btn-warning:hover {
    background-color: #e0a800;
    box-shadow: 0 4px 12px rgba(255, 193, 7, 0.3);
}

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

.btn-danger:hover {
    background-color: #c82333;
    box-shadow: 0 4px 12px rgba(220, 53, 69, 0.3);
}

.btn-info {
    background-color: var(--color-info);
    border-color: var(--color-info);
}

.btn-info:hover {
    background-color: #11999e;
    box-shadow: 0 4px 12px rgba(23, 162, 184, 0.3);
}

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

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

.btn-outline-secondary {
    color: var(--color-secondary);
    border-color: var(--color-border);
}

.btn-outline-secondary:hover {
    color: #fff;
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn-outline-danger {
    color: var(--color-danger);
    border-color: var(--color-border);
}

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

.btn-outline-info {
    color: var(--color-info);
    border-color: var(--color-border);
}

.btn-outline-info:hover {
    color: #fff;
    background-color: var(--color-info);
    border-color: var(--color-info);
}

.btn-outline-warning {
    color: var(--color-warning-dark);
    border-color: var(--color-border);
}

.btn-outline-warning:hover {
    color: #212529;
    background-color: var(--color-warning);
    border-color: var(--color-warning);
}

.btn-loading {
    pointer-events: none;
    opacity: 0.7;
}

/* ---------- Form Controls ---------- */

.form-control {
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.15);
}

.form-label {
    font-weight: 500;
    color: var(--color-heading);
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.input-group-text {
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm) !important;
    border: 1px solid var(--color-border);
    background-color: var(--color-bg);
    color: var(--color-text-muted);
}

/* ---------- Tables ---------- */

.table {
    font-size: 0.875rem;
    border-collapse: separate;
    border-spacing: 0;
}

.table thead th {
    background-color: #f8f9fa;
    border-bottom: 2px solid var(--color-border);
    font-weight: 600;
    color: var(--color-heading);
    padding: 0.6rem 0.75rem;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.table tbody td {
    padding: 0.55rem 0.75rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--color-border-light);
}

.table tbody tr:hover {
    background-color: var(--color-primary-soft);
}

.table-striped > tbody tr:nth-of-type(odd) {
    background-color: #fcfbfc;
}

.table-striped > tbody tr:nth-of-type(odd):hover {
    background-color: var(--color-primary-soft);
}

.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* Responsive table improvements */

@media (max-width: 768px) {
    .table-responsive {
        border-left: 1px solid var(--color-border);
        border-right: 1px solid var(--color-border);
    }
}

/* ---------- Badges ---------- */

.badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 0.28rem 0.55rem;
    border-radius: var(--border-radius-sm);
    letter-spacing: 0.2px;
}

.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(--color-info) !important; }
.bg-secondary { background-color: var(--color-secondary) !important; }
.bg-light { background-color: #f8f9fa !important; }

.bg-opacity-10 { background-color: rgba(var(--color-primary-rgb), 0.1) !important; }
.bg-opacity-15 { background-color: rgba(var(--color-primary-rgb), 0.15) !important; }

/* ---------- Alerts ---------- */

.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    box-shadow: var(--shadow-sm);
}

.alert-success {
    background-color: var(--color-success-soft);
    color: #155724;
    border-left: 3px solid var(--color-success);
}

.alert-danger {
    background-color: var(--color-danger-soft);
    color: #721c24;
    border-left: 3px solid var(--color-danger);
}

.alert-warning {
    background-color: var(--color-warning-soft);
    color: #856404;
    border-left: 3px solid var(--color-warning);
}

.alert-info {
    background-color: var(--color-info-soft);
    color: #0c5460;
    border-left: 3px solid var(--color-info);
}

.alert-primary {
    background-color: var(--color-primary-soft);
    color: #0a3d62;
    border-left: 3px solid var(--color-primary);
}

.alert-sm {
    padding: 0.45rem 0.75rem;
    font-size: 0.825rem;
}

.dismissible-alert {
    padding-right: 2.5rem;
    position: relative;
}

.alert-dismiss {
    position: absolute;
    top: 0.5rem;
    right: 0.75rem;
    background: none;
    border: none;
    color: inherit;
    opacity: 0.5;
    cursor: pointer;
    font-size: 1rem;
}

.alert-dismiss:hover {
    opacity: 1;
}

/* ---------- Nav Tabs ---------- */

.nav-tabs {
    border-bottom: 2px solid var(--color-border);
    margin-bottom: 1rem;
}

.nav-tabs .nav-item .nav-link {
    border: none;
    border-radius: 0;
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.55rem 1.25rem;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-tabs .nav-item .nav-link:hover {
    color: var(--color-text);
    border-bottom-color: var(--color-border);
}

.nav-tabs .nav-item .nav-link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
    background: none;
}

.nav-tabs .nav-item .nav-link i {
    margin-right: 0.3rem;
}

/* ---------- Device Status Indicators ---------- */

.status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: 0.4rem;
}

.status-online {
    background-color: var(--color-success);
    box-shadow: 0 0 0 2px rgba(40, 167, 69, 0.3);
}

.status-offline {
    background-color: var(--color-secondary);
    box-shadow: 0 0 0 2px rgba(108, 117, 125, 0.3);
}

/* ---------- Loading States ---------- */

.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    border-radius: var(--border-radius);
    backdrop-filter: blur(2px);
}

.spinner-sm {
    width: 1.25rem;
    height: 1.25rem;
}

.spinner-md {
    width: 2rem;
    height: 2rem;
}

.content-loading {
    position: relative;
}

.content-loading .loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

/* ---------- Map Containers ---------- */

.map-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    background-color: #e9ecef;
}

.map-full {
    height: calc(100vh - 200px);
    min-height: 400px;
}

.map-card {
    height: 500px;
    min-height: 350px;
}

.map-sm {
    height: 360px;
    min-height: 280px;
}

/* ---------- Empty States ---------- */

.empty-state {
    text-align: center;
    padding: 2.5rem 1rem;
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    opacity: 0.4;
}

.empty-state p {
    font-size: 0.9rem;
    margin-bottom: 0;
}

/* ---------- Pagination ---------- */

.pagination {
    --bs-pagination-border-color: var(--color-border);
}

.page-link {
    border-radius: var(--border-radius-sm);
    color: var(--color-primary);
    border: 1px solid var(--color-border);
    padding: 0.35rem 0.6rem;
    font-size: 0.825rem;
    margin: 0 0.1rem;
}

.page-link:hover {
    background-color: var(--color-primary-soft);
    color: var(--color-primary);
    border-color: var(--color-primary-light);
}

.page-item.active .page-link {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

/* ---------- Pagination alternate (button style) ---------- */

.pagination-btn-group {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

/* ---------- Photo / Video Grid ---------- */

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1rem;
}

.media-card {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    background-color: var(--color-bg-card);
}

.media-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.media-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    background-color: #e9ecee;
}

.media-card .media-body {
    padding: 0.5rem;
}

.media-card .media-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

/* ---------- Command Buttons Grid ---------- */

.command-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.command-grid .btn {
    flex: 1 1 160px;
    justify-content: center;
    text-align: center;
}

/* ---------- Tooltip helpers ---------- */

[data-bs-toggle="tooltip"] {
    cursor: help;
}

/* ---------- Scrollbar ---------- */

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ---------- Quick actions ---------- */

.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}

/* ---------- Responsive Breakpoints ---------- */

@media (max-width: 767.98px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        bottom: 0;
        z-index: 1030;
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .sidebar.collapsed {
        max-width: 260px;
    }

    .sidebar.collapsed .sidebar-title,
    .sidebar.collapsed .sidebar-label {
        display: block;
    }

    .main-content {
        margin-left: 0;
    }

    .page-wrapper {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.4rem;
    }

    .command-grid .btn {
        flex: 1 1 120px;
    }
}

@media (min-width: 768px) {
    .sidebar {
        position: relative;
    }
}

@media (max-width: 576px) {
    .stat-card {
        min-width: 120px;
        padding: 1rem;
    }

    .stat-card .stat-label {
        font-size: 0.65rem;
    }

    .stat-card .stat-value {
        font-size: 1.25rem;
    }

    h1 { font-size: 1.4rem; }
    h2 { font-size: 1.15rem; }
    h3 { font-size: 1rem; }

    .page-title {
        font-size: 1.1rem;
    }
}

/* ---------- Confirmation Dialog ---------- */

.confirm-dialog {
    display: none;
}