/* Custom Dark Theme CSS - Complete and Self-Contained */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --bg-quaternary: #3a3a3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --accent: #4a9eff;
    --accent-hover: #3a8eef;
    --accent-light: rgba(74, 158, 255, 0.1);
    --border: #404040;
    --border-light: #505050;
    --success: #28a745;
    --success-light: rgba(40, 167, 69, 0.1);
    --warning: #ffc107;
    --warning-light: rgba(255, 193, 7, 0.1);
    --danger: #dc3545;
    --danger-light: rgba(220, 53, 69, 0.1);
    --info: #17a2b8;
    --info-light: rgba(23, 162, 184, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
}

/* Navigation */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.navbar-brand {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
    text-decoration: none;
}

.navbar-brand:hover {
    color: var(--accent);
    text-decoration: none;
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    padding: 0.5rem 0;
}

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

.nav-link.active {
    border-bottom: 2px solid var(--accent);
}

/* Container and Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Margin utilities */
.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.5rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.me-1 { margin-right: 0.25rem !important; }
.me-2 { margin-right: 0.5rem !important; }
.me-3 { margin-right: 1rem !important; }

.ms-1 { margin-left: 0.25rem !important; }
.ms-2 { margin-left: 0.5rem !important; }
.ms-3 { margin-left: 1rem !important; }

/* Padding utilities */
.p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.p-4 { padding: 1.5rem !important; }
.p-5 { padding: 3rem !important; }

.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.5rem !important; padding-bottom: 1.5rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.5rem !important; padding-right: 1.5rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; margin-bottom: 1rem; }
h2 { font-size: 2rem; margin-bottom: 0.75rem; }
h3 { font-size: 1.75rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.5rem; margin-bottom: 0.5rem; }
h5 { font-size: 1.25rem; margin-bottom: 0.5rem; }
h6 { font-size: 1.125rem; margin-bottom: 0.5rem; }

/* Text utilities */
.text-muted { color: var(--text-muted) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-success { color: var(--success) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-danger { color: var(--danger) !important; }
.text-center { text-align: center !important; }
.text-left { text-align: left !important; }
.text-right { text-align: right !important; }

/* Forms */
.form-select, .form-control {
    background-color: var(--bg-quaternary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.2s ease;
    width: 100%;
}

.form-select:focus, .form-control:focus {
    background-color: var(--bg-quaternary);
    border-color: var(--accent);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(74, 158, 255, 0.25);
    outline: none;
}

.form-select option {
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    padding: 0.5rem;
}

.form-check-input {
    background-color: var(--bg-quaternary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
}

.form-check-input:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

.form-check-label {
    color: var(--text-primary);
    cursor: pointer;
}

/* Buttons */
.btn {
    border-radius: 6px;
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-block;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 1rem;
    text-align: center;
    line-height: 1.5;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    color: var(--text-primary);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.btn-outline-primary:hover {
    background-color: var(--accent);
    color: var(--text-primary);
}

.btn-secondary {
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

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

.btn-danger:hover {
    background-color: #c82333;
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.w-100 { width: 100% !important; }
.w-auto { width: auto !important; }

/* Tables */
.table {
    background-color: var(--bg-secondary);
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    width: 100%;
    margin-bottom: 1rem;
}

.table thead th {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom: 2px solid var(--border);
    font-weight: 600;
    padding: 1rem;
    text-align: left;
}

.table tbody td, .table tbody th {
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    padding: 1rem;
    vertical-align: middle;
}

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

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(255, 255, 255, 0.02);
}

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

/* Alerts */
.alert {
    border-radius: 8px;
    padding: 1rem 1.5rem;
    border: 1px solid;
    margin-bottom: 1rem;
}

.alert-info {
    background-color: var(--info-light);
    border-color: var(--info);
    color: var(--text-primary);
}

.alert-success {
    background-color: var(--success-light);
    border-color: var(--success);
    color: var(--text-primary);
}

.alert-warning {
    background-color: var(--warning-light);
    border-color: var(--warning);
    color: var(--text-primary);
}

.alert-danger {
    background-color: var(--danger-light);
    border-color: var(--danger);
    color: var(--text-primary);
}

/* Search */
.position-relative {
    position: relative;
}

#searchResults {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-quaternary);
    border: 1px solid var(--border);
    border-radius: 6px;
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.list-group {
    list-style: none;
}

.list-group-item {
    background-color: var(--bg-quaternary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 0.75rem 1rem;
    text-decoration: none;
    display: block;
    transition: background-color 0.2s ease;
}

.list-group-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.list-group-item-action:hover {
    background-color: var(--bg-tertiary);
}

/* Pagination */
.pagination {
    margin-top: 2rem;
    display: flex;
    list-style: none;
    gap: 0.25rem;
    justify-content: center;
}

.page-link {
    background-color: var(--bg-quaternary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.page-link:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--border);
}

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

/* Flexbox utilities */
.d-flex { display: flex !important; }
.d-block { display: block !important; }
.d-inline-block { display: inline-block !important; }
.d-none { display: none !important; }

.flex-column { flex-direction: column !important; }
.flex-row { flex-direction: row !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }

.justify-content-start { justify-content: flex-start !important; }
.justify-content-end { justify-content: flex-end !important; }
.justify-content-center { justify-content: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-around { justify-content: space-around !important; }

.align-items-start { align-items: flex-start !important; }
.align-items-end { align-items: flex-end !important; }
.align-items-center { align-items: center !important; }
.align-items-baseline { align-items: baseline !important; }
.align-items-stretch { align-items: stretch !important; }

.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }
.gap-5 { gap: 3rem !important; }

/* Responsive utilities */
@media (max-width: 768px) {
    .flex-md-row { flex-direction: column !important; }
    .flex-md-column { flex-direction: column !important; }
    .justify-content-md-center { justify-content: center !important; }
    .justify-content-md-start { justify-content: flex-start !important; }
    .align-items-md-center { align-items: center !important; }
    .align-items-md-start { align-items: flex-start !important; }
    .mb-md-0 { margin-bottom: 1rem !important; }
    .text-md-start { text-align: left !important; }
    .text-md-center { text-align: center !important; }
}

@media (max-width: 992px) {
    .flex-lg-row { flex-direction: column !important; }
    .flex-lg-column { flex-direction: column !important; }
    .justify-content-lg-center { justify-content: center !important; }
    .align-items-lg-center { align-items: center !important; }
}

@media (max-width: 576px) {
    .container { padding: 0 10px; }
    .navbar .container { padding: 0 10px; }
    .btn { padding: 0.5rem 1rem; }
    .table thead th, .table tbody td { padding: 0.75rem 0.5rem; }
}

/* Canvas for charts */
canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border);
}

/* Links */
a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Small text */
small {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Border utilities */
.border {
    border: 1px solid var(--border) !important;
}

.border-top { border-top: 1px solid var(--border) !important; }
.border-bottom { border-bottom: 1px solid var(--border) !important; }
.border-left { border-left: 1px solid var(--border) !important; }
.border-right { border-right: 1px solid var(--border) !important; }

.rounded { border-radius: 4px !important; }
.rounded-top { border-top-left-radius: 4px !important; border-top-right-radius: 4px !important; }
.rounded-bottom { border-bottom-left-radius: 4px !important; border-bottom-right-radius: 4px !important; }

/* Min width utility */
.min-width-250 {
    min-width: 250px;
}

/* Background utilities */
.bg-primary { background-color: var(--accent) !important; }
.bg-secondary { background-color: var(--bg-secondary) !important; }
.bg-tertiary { background-color: var(--bg-tertiary) !important; }
.bg-quaternary { background-color: var(--bg-quaternary) !important; }

.text-white { color: var(--text-primary) !important; }

/* Additional utilities */
.shadow { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3) !important; }
.shadow-sm { box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2) !important; }
.shadow-lg { box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4) !important; }

.overflow-hidden { overflow: hidden !important; }
.overflow-auto { overflow: auto !important; }
.overflow-scroll { overflow: scroll !important; }

.position-absolute { position: absolute !important; }
.position-relative { position: relative !important; }
.position-fixed { position: fixed !important; }
.position-sticky { position: sticky !important; }

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Focus styles for accessibility */
*:focus {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background-color: var(--accent);
    color: var(--text-primary);
}

::-moz-selection {
    background-color: var(--accent);
    color: var(--text-primary);
}


/* ================== Dark Theme noUiSlider ================== */
#chartSlider {
    background: var(--bg-tertiary);
    border-radius: 6px;
    height: 8px;
}

#chartSlider .noUi-connect {
    background: var(--accent);
}

#chartSlider .noUi-handle {
    background: var(--bg-secondary);
    border: 2px solid var(--accent);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
    width: 20px;
    height: 20px;
    top: -6px; /* centers handle on the track */
    cursor: grab;
    border-radius: 50%;
    transition: all 0.2s ease;
}

#chartSlider .noUi-handle:hover {
    background: var(--accent);
    border-color: var(--accent-hover);
}

#chartSlider .noUi-tooltip {
    background: var(--bg-quaternary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 0.875rem;
    padding: 4px 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
}

.range-labels span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}