/* Minimalist Design System */
:root {
    /* Transitions */
    --theme-transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
    
    /* Font Stack */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Dark Theme Variables (Default) */
body, body.dark-mode {
    --bg-app: #0f1115;
    --bg-surface: #16181d;
    --bg-surface-hover: #1e222b;
    --border-color: #242831;
    --border-color-hover: #3b4252;
    
    --text-primary: #e5e9f0;
    --text-secondary: #9eabbc;
    --text-muted: #5e697a;
    
    --color-accent: #81a1c1; /* Clean frosted blue */
    --color-accent-hover: #88c0d0;
    --color-accent-bg: rgba(129, 161, 193, 0.1);
    
    --table-zebra: #121419;
    --alert-bg: #242933;
    --alert-border: #81a1c1;
    --alert-text: #88c0d0;
}

/* Light Theme Variables */
body.light-mode {
    --bg-app: #f6f8fa;
    --bg-surface: #ffffff;
    --bg-surface-hover: #f1f3f5;
    --border-color: #d1d5db;
    --border-color-hover: #9ca3af;
    
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --color-accent: #2563eb; /* Clean royal blue */
    --color-accent-hover: #1d4ed8;
    --color-accent-bg: rgba(37, 99, 235, 0.05);
    
    --table-zebra: #f9fafb;
    --alert-bg: #eff6ff;
    --alert-border: #bfdbfe;
    --alert-text: #1d4ed8;
}

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

body {
    background-color: var(--bg-app);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    transition: var(--theme-transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header & Navbar */
.navbar {
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: var(--theme-transition);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-brand {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: -0.3px;
}

.nav-brand i {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 0.25rem;
    position: relative;
    transition: color 0.2s ease;
}

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

.nav-btn.active {
    color: var(--text-primary);
    font-weight: 600;
}

.nav-btn.active::after {
    content: '';
    position: absolute;
    bottom: -13px;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-accent);
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 2.2rem;
    height: 2.2rem;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--theme-transition);
}

.theme-toggle:hover {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    background-color: var(--bg-surface-hover);
}

/* Main Content Area */
main {
    flex-grow: 1;
    padding-top: 2rem;
    padding-bottom: 3rem;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

/* Wiki Split Layout */
.wiki-container {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2.5rem;
    align-items: start;
}

.wiki-sidebar {
    position: sticky;
    top: 6rem;
}

.sidebar-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 1rem;
    padding-left: 0.5rem;
}

.wiki-menu-list {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.wiki-menu-item {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 0.35rem;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.wiki-menu-item:hover {
    color: var(--text-primary);
    background-color: var(--bg-surface-hover);
}

.wiki-menu-item.active {
    color: var(--color-accent);
    background-color: var(--color-accent-bg);
    font-weight: 600;
}

.wiki-body {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 2.5rem;
    transition: var(--theme-transition);
}

.wiki-metadata {
    margin-bottom: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Markdown Rendering Clean Styles */
.markdown-body h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.markdown-body h2 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-top: 2rem;
    margin-bottom: 1rem;
    letter-spacing: -0.2px;
}

.markdown-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.markdown-body p {
    margin-bottom: 1.2rem;
    color: var(--text-primary);
}

.markdown-body ul, .markdown-body ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.markdown-body li {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.markdown-body blockquote {
    border-left: 3px solid var(--color-accent);
    color: var(--text-secondary);
    padding-left: 1.25rem;
    margin: 1.5rem 0;
    font-style: italic;
}

.markdown-body code {
    font-family: monospace;
    font-size: 0.9em;
    background-color: var(--bg-surface-hover);
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    border: 1px solid var(--border-color);
}

/* Wiki Links styles */
.markdown-body a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px dotted var(--color-accent);
    transition: color 0.15s ease, border-color 0.15s ease;
}

.markdown-body a:hover {
    color: var(--color-accent-hover);
    border-bottom-style: solid;
}

.loading {
    color: var(--text-muted);
    font-style: italic;
    display: inline-block;
    padding: 1rem 0;
}

/* Search Layout */
.search-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: start;
}

.search-filters-pane {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.5rem;
    position: sticky;
    top: 6rem;
    transition: var(--theme-transition);
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.filters-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.filter-group {
    margin-bottom: 1.25rem;
}

.filter-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Search Box Wrapper */
.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.search-icon {
    position: absolute;
    left: 0.75rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    background-color: var(--bg-app);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 0.35rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--theme-transition);
}

input[type="text"] {
    padding-left: 2.2rem;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.filter-range-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.range-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}

.range-inputs input {
    text-align: center;
}

/* Table Design */
.search-results-pane {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.results-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.results-count-text {
    font-weight: 500;
}

/* Similar Alert Box */
.active-filter-alert {
    background-color: var(--alert-bg);
    border: 1px solid var(--alert-border);
    color: var(--alert-text);
    padding: 0.5rem 0.75rem;
    border-radius: 0.35rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.active-filter-alert button {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-weight: bold;
    padding: 0.1rem 0.3rem;
}

.table-container {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    overflow-x: auto;
    transition: var(--theme-transition);
}

.disc-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.disc-table th,
.disc-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

.disc-table th {
    background-color: rgba(0, 0, 0, 0.02);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.disc-table tbody tr {
    transition: background-color 0.15s ease;
}

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

.disc-table tbody tr:nth-child(even) {
    background-color: var(--table-zebra);
}

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

.disc-table td strong {
    color: var(--text-primary);
    font-weight: 600;
}

.num-col {
    text-align: right;
}

.action-col {
    text-align: center;
}

.loading-cell {
    text-align: center;
    padding: 3rem !important;
    color: var(--text-muted);
    font-style: italic;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0.75rem;
    border-radius: 0.25rem;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s ease;
    background: none;
}

.btn-text {
    color: var(--color-accent);
    border: 1px solid transparent;
}

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

.btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
}

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

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.page-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    min-width: 2rem;
    height: 2rem;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--theme-transition);
}

.page-btn:hover:not(:disabled) {
    color: var(--text-primary);
    border-color: var(--border-color-hover);
    background-color: var(--bg-surface-hover);
}

.page-btn.active {
    background-color: var(--color-accent-bg);
    border-color: var(--color-accent);
    color: var(--color-accent);
    font-weight: 600;
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.hidden {
    display: none !important;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .wiki-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .wiki-sidebar {
        position: static;
    }
    
    .wiki-body {
        padding: 1.5rem;
    }
    
    .search-layout {
        grid-template-columns: 1fr;
    }
    
    .search-filters-pane {
        position: static;
    }
    
    .disc-table th:nth-child(5),
    .disc-table td:nth-child(5),
    .disc-table th:nth-child(7),
    .disc-table td:nth-child(7),
    .disc-table th:nth-child(8),
    .disc-table td:nth-child(8) {
        display: none; /* Hide Rim Depth, Max Weight, and Approved Date on compact mobile views */
    }
}

/* Column Sorting Styling */
.disc-table th.sortable {
    cursor: pointer;
    user-select: none;
    position: relative;
    transition: background-color 0.15s ease;
}
.disc-table th.sortable:hover {
    background-color: rgba(0, 0, 0, 0.04);
}
body:not(.light-mode) .disc-table th.sortable:hover {
    background-color: rgba(255, 255, 255, 0.02);
}
.disc-table th.sortable i {
    margin-left: 0.25rem;
    font-size: 0.75rem;
    opacity: 0.4;
    transition: opacity 0.15s ease;
}
.disc-table th.sortable:hover i,
.disc-table th.sortable.active i {
    opacity: 0.9;
}

/* Hide number input spinners (arrows) for a cleaner UX */
/* Chrome, Safari, Edge, Opera */
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
    -webkit-appearance: none !important;
    margin: 0;
}

/* Firefox */
input[type=number] {
    -moz-appearance: textfield !important;
    appearance: textfield !important;
}

/* Brand search type-ahead input styling */
.brand-search-wrapper {
    margin-bottom: 0.5rem;
}
.brand-search-input {
    font-size: 0.85rem !important;
    padding: 0.35rem 0.5rem !important;
}

/* Brand checkbox list container */
.brand-checkbox-list {
    max-height: 180px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    padding: 0.5rem;
    background-color: var(--bg-app);
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    transition: var(--theme-transition);
}

.brand-checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.2rem 0.4rem;
    border-radius: 0.25rem;
    transition: background-color 0.15s ease, color 0.15s ease;
    user-select: none;
}

.brand-checkbox-item:hover {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
}

.brand-checkbox-item input[type="checkbox"] {
    cursor: pointer;
    accent-color: var(--color-accent);
    width: 0.95rem;
    height: 0.95rem;
    margin: 0;
}

/* Scrollbar styling for brand list */
.brand-checkbox-list::-webkit-scrollbar {
    width: 6px;
}
.brand-checkbox-list::-webkit-scrollbar-track {
    background: transparent;
}
.brand-checkbox-list::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}
.brand-checkbox-list::-webkit-scrollbar-thumb:hover {
    background-color: var(--border-color-hover);
}

/* Highlight exact specs match (all four dimensions matching base) */
.perfect-match-row {
    background-color: var(--color-accent-bg) !important;
}
.perfect-match-row:hover {
    background-color: rgba(129, 161, 193, 0.15) !important;
}
body.light-mode .perfect-match-row:hover {
    background-color: rgba(37, 99, 235, 0.1) !important;
}

/* Brand quick actions section */
.brand-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.btn-xs {
    padding: 0.2rem 0.4rem !important;
    font-size: 0.75rem !important;
    border-radius: 0.2rem !important;
}