:root {
    /* Refined Dark Minimalist Palette */
    --bg-base: #0b0f19;
    --bg-surface: #111827;
    --bg-elevated: #162032;
    --bg-highlight: #1e293b;
    --bg-input: #0f172a;
    --border-subtle: #1e293b;
    --border-muted: #293548;
    --border-hover: #3b4d66;
    
    /* Text Hierarchy */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Unified Subtle Accent */
    --accent-primary: #3b82f6;
    --accent-hover: #2563eb;
    --accent-subtle: rgba(59, 130, 246, 0.12);
    --accent-border: rgba(59, 130, 246, 0.3);
    
    /* Transitions & Radii */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --transition-fast: 0.15s ease-in-out;
}

/* ==========================================================================
   Base & Global Styles
   ========================================================================== */
html {
    color-scheme: dark;
}

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-base);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: #60a5fa;
}

/* Scrollbar Dark Custom */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* ==========================================================================
   Header & Navbar
   ========================================================================== */
.site-header {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 1020;
}

.site-navbar {
    background-color: transparent !important;
    padding: 0.75rem 0;
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    color: var(--accent-primary);
}

.brand-title {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.brand-subtitle {
    color: var(--text-secondary);
    font-weight: 400;
}

.status-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 9999px;
}

.auth-badge {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
    border-radius: 9999px;
}

/* Navbar Toggler */
.navbar-toggler {
    border-color: var(--border-muted);
    padding: 0.35rem 0.65rem;
}

.navbar-toggler:focus {
    box-shadow: 0 0 0 2px var(--accent-border);
}

/* ==========================================================================
   Filter Card & Forms
   ========================================================================== */
.filter-card {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.35);
}

.filter-label {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    margin-bottom: 0.45rem;
}

/* Dark Form Controls */
.form-control,
.form-select {
    background-color: var(--bg-input) !important;
    border: 1px solid var(--border-muted) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    padding: 0.55rem 0.85rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 0 3px var(--accent-subtle) !important;
    outline: none;
}

.form-control::placeholder {
    color: var(--text-muted);
    opacity: 0.8;
}

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

.form-text {
    color: var(--text-muted) !important;
    font-size: 0.75rem;
    margin-top: 0.35rem;
}

/* Dark Dropdown Menu */
.dropdown-menu {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
    padding: 0.5rem;
}

.dropdown-header {
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.4rem 0.75rem;
}

.dropdown-item {
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    padding: 0.5rem 0.75rem;
    transition: background var(--transition-fast);
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--bg-highlight);
    color: #ffffff;
}

/* Preset badge inside label */
.badge-subtle {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
    font-weight: 500;
    font-size: 0.72rem;
}

/* ==========================================================================
   Buttons (Refined, Cohesive Dark Style)
   ========================================================================== */
/* Main Fetch / Action Button */
.btn-primary-action {
    background-color: var(--accent-primary);
    color: #ffffff;
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.88rem;
    transition: all var(--transition-fast);
}

.btn-primary-action:hover,
.btn-primary-action:focus {
    background-color: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.35);
}

/* Dark Elevated Global Action Buttons (Download ZIP, Email All) */
.btn-zip-action,
.btn-email-action {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    transition: all var(--transition-fast);
}

.btn-zip-action:hover,
.btn-email-action:hover {
    background-color: var(--bg-highlight);
    border-color: var(--border-hover);
    color: #ffffff;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-zip-action i,
.btn-email-action i {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.btn-zip-action:hover i,
.btn-email-action:hover i {
    color: var(--accent-primary);
}

/* Secondary Tab Action Buttons */
.btn-action-secondary {
    background-color: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.btn-action-secondary:hover,
.btn-action-secondary:focus {
    background-color: var(--bg-highlight);
    border-color: var(--border-hover);
    color: #ffffff;
}

.btn-action-secondary i {
    color: var(--text-secondary);
}

/* ==========================================================================
   Category Filter & Tabs Navigation
   ========================================================================== */
.scrollable-category-wrapper {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 2px;
}

.nav-category {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 4px;
    gap: 4px;
    display: inline-flex;
    white-space: nowrap;
}

.nav-category .nav-link {
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 7px 16px;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.nav-category .nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
}

.nav-category .nav-link.active {
    background-color: var(--bg-highlight);
    color: var(--text-primary);
    border-color: var(--border-muted);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.25);
}

.nav-category .nav-link i {
    color: var(--text-secondary);
}

.nav-category .nav-link.active i {
    color: var(--accent-primary);
}

/* Endpoint Sub Tabs */
.scrollable-tabs-wrapper {
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 6px;
}

.endpoint-tabs {
    border-bottom: 1px solid var(--border-subtle);
    gap: 6px;
    padding-bottom: 4px;
    min-width: max-content;
}

.endpoint-tabs .nav-link {
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 500;
    padding: 7px 14px;
    background-color: var(--bg-surface);
    white-space: nowrap;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.endpoint-tabs .nav-link:hover {
    background-color: var(--bg-elevated);
    border-color: var(--border-muted);
    color: var(--text-primary);
}

.endpoint-tabs .nav-link.active {
    background-color: var(--bg-highlight);
    border-color: var(--accent-border);
    color: #ffffff;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.badge-count {
    background-color: var(--bg-elevated) !important;
    color: var(--text-secondary) !important;
    border: 1px solid var(--border-subtle);
    font-size: 0.7rem;
    font-weight: 500;
    padding: 2px 7px;
    border-radius: 9999px;
}

.endpoint-tabs .nav-link.active .badge-count {
    background-color: var(--accent-subtle) !important;
    color: #93c5fd !important;
    border-color: var(--accent-border);
}

/* ==========================================================================
   Endpoint Detail Header & URL
   ========================================================================== */
.endpoint-header {
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    padding: 1.15rem 1.25rem;
}

.url-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem;
    background: var(--bg-input);
    padding: 4px 9px;
    border-radius: var(--radius-sm);
    color: #cbd5e1;
    border: 1px solid var(--border-subtle);
    display: inline-block;
    max-width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    vertical-align: middle;
}

.badge-method {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border-muted);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 7px;
    border-radius: var(--radius-sm);
}

.badge-category {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-muted);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 3px 8px;
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Empty & Loading States
   ========================================================================== */
.loading-box {
    display: none;
    padding: 50px 20px;
    text-align: center;
}

.pulse-spinner {
    width: 3rem;
    height: 3rem;
    color: var(--accent-primary) !important;
}

.empty-state {
    padding: 50px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 2.75rem;
    color: #475569;
    margin-bottom: 12px;
}

/* ==========================================================================
   DataTables Dark Theme Customization
   ========================================================================== */
.table-container {
    background: var(--bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    padding: 1.25rem;
    min-height: 380px;
}

.table-modern {
    font-size: 0.84rem;
    color: #cbd5e1;
    border-color: var(--border-subtle);
}

.table-modern thead th {
    background-color: var(--bg-elevated) !important;
    color: var(--text-primary) !important;
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding: 11px 14px;
    vertical-align: middle;
    white-space: nowrap;
    border-bottom: 1px solid var(--border-muted) !important;
    border-top: none;
}

.table-modern tbody td {
    padding: 9px 14px;
    vertical-align: middle;
    border-color: var(--border-subtle) !important;
    background-color: transparent !important;
}

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

.table-modern tbody tr:nth-of-type(even) {
    background-color: rgba(14, 21, 38, 0.45);
}

.table-modern tbody tr:hover td {
    background-color: var(--bg-elevated) !important;
    color: #ffffff;
}

/* DataTables Controls & Toolbar */
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_processing,
.dataTables_wrapper .dataTables_paginate {
    color: var(--text-secondary);
    font-size: 0.82rem;
}

.dataTables_wrapper .dataTables_filter input {
    background-color: var(--bg-input);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.45rem 0.85rem;
    margin-left: 0.5rem;
    outline: none;
    font-size: 0.82rem;
    transition: border-color var(--transition-fast);
}

.dataTables_wrapper .dataTables_filter input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-subtle);
}

.dataTables_wrapper .dataTables_length select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 0.35rem 0.65rem;
    margin: 0 0.4rem;
    font-size: 0.82rem;
}

/* DataTables Buttons (Colvis, Copy, Excel) */
.dt-buttons .btn {
    background-color: var(--bg-elevated) !important;
    border: 1px solid var(--border-muted) !important;
    color: var(--text-secondary) !important;
    font-size: 0.8rem !important;
    padding: 0.4rem 0.75rem !important;
    border-radius: var(--radius-sm) !important;
    transition: all var(--transition-fast) !important;
}

.dt-buttons .btn:hover {
    background-color: var(--bg-highlight) !important;
    border-color: var(--border-hover) !important;
    color: #ffffff !important;
}

/* DataTables Pagination */
.dataTables_wrapper .pagination .page-item .page-link {
    background-color: var(--bg-elevated);
    border-color: var(--border-subtle);
    color: var(--text-secondary);
    font-size: 0.82rem;
    padding: 0.4rem 0.75rem;
    transition: all var(--transition-fast);
}

.dataTables_wrapper .pagination .page-item:hover .page-link {
    background-color: var(--bg-highlight);
    border-color: var(--border-muted);
    color: var(--text-primary);
}

.dataTables_wrapper .pagination .page-item.active .page-link {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: #ffffff;
    font-weight: 600;
}

.dataTables_wrapper .pagination .page-item.disabled .page-link {
    background-color: var(--bg-surface);
    border-color: var(--border-subtle);
    color: var(--text-muted);
    opacity: 0.5;
}

/* Table Boolean Badges */
.badge-bool-true {
    background: rgba(16, 185, 129, 0.12);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.25);
    font-size: 0.7rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
}

.badge-bool-false {
    background: var(--bg-elevated);
    color: var(--text-muted);
    border: 1px solid var(--border-subtle);
    font-size: 0.7rem;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 500;
}

/* ==========================================================================
   Modals & SweetAlert2 Dark Theming
   ========================================================================== */
.modal-content {
    background-color: var(--bg-surface) !important;
    border: 1px solid var(--border-muted) !important;
    border-radius: var(--radius-md) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6) !important;
}

.modal-header {
    background-color: var(--bg-elevated) !important;
    border-bottom: 1px solid var(--border-subtle) !important;
}

.modal-footer {
    background-color: var(--bg-elevated) !important;
    border-top: 1px solid var(--border-subtle) !important;
}

.dark-callout {
    background: var(--bg-input);
    border: 1px solid var(--border-muted);
    border-radius: var(--radius-sm);
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
}

/* SweetAlert2 Dark Overrides */
.swal2-popup {
    background: var(--bg-surface) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-muted) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7) !important;
}

.swal2-title {
    color: var(--text-primary) !important;
    font-size: 1.25rem !important;
    font-weight: 700 !important;
}

.swal2-html-container {
    color: var(--text-secondary) !important;
    font-size: 0.9rem !important;
}

.swal2-toast {
    background: var(--bg-elevated) !important;
    color: var(--text-primary) !important;
    border: 1px solid var(--border-muted) !important;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5) !important;
}

/* Footer */
.site-footer {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-subtle);
    color: var(--text-muted);
}

/* ==========================================================================
   Responsive Utilities & Breakpoints
   ========================================================================== */
@media (max-width: 991.98px) {
    .site-navbar .navbar-collapse {
        background-color: var(--bg-elevated);
        border: 1px solid var(--border-subtle);
        border-radius: var(--radius-md);
        padding: 1rem;
        margin-top: 0.75rem;
    }
}

@media (max-width: 767.98px) {
    .container-fluid {
        padding-left: 1rem !important;
        padding-right: 1rem !important;
    }
    
    .filter-card {
        padding: 1.25rem !important;
    }

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

    .table-container {
        padding: 0.85rem !important;
    }

    /* Stack DataTables header & footer controls cleanly */
    .dataTables_wrapper .dataTables_filter {
        text-align: left !important;
        margin-top: 0.5rem;
        width: 100%;
    }

    .dataTables_wrapper .dataTables_filter input {
        width: 100% !important;
        margin-left: 0 !important;
    }

    .dataTables_wrapper .dt-buttons {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 4px;
    }

    .dataTables_wrapper .dataTables_paginate {
        justify-content: center !important;
        margin-top: 0.75rem;
    }
}

@media (max-width: 575.98px) {
    .brand-title {
        font-size: 1rem;
    }
    
    .brand-icon {
        width: 32px;
        height: 32px;
        font-size: 0.95rem;
    }

    /* Action buttons full-width touch friendly on small screens */
    .btn-action-mobile-full {
        width: 100%;
    }

    .endpoint-tabs .nav-link {
        font-size: 0.78rem;
        padding: 6px 10px;
    }
    
    .url-code {
        font-size: 0.72rem;
    }
}