:root {
    --oal-bg: #f5f7fb;
    --oal-surface: #ffffff;
    --oal-text: #12263a;
    --oal-muted: #607389;
    --oal-border: #d7e1ec;
    --oal-accent: #0f6c8b;
    --oal-accent-soft: #eaf4fa;
    --oal-heading: "Segoe UI", "Trebuchet MS", sans-serif;
    --oal-body: "Tahoma", "Verdana", sans-serif;
    --oal-table-font-size: 0.86rem;
}

* {
    box-sizing: border-box;
}

body {
    margin: 1vw;
    font-family: var(--oal-body);
    color: var(--oal-text);
    background: var(--oal-bg);
}

h2 {
    font-family: var(--oal-heading);
    letter-spacing: 0.01em;
}

/* Table shell */
.table-shell {
    margin-top: 1rem;
    border: 1px solid var(--oal-border);
    border-radius: 16px;
    background: var(--oal-surface);
    box-shadow: 0 14px 30px rgba(17, 37, 61, 0.08);
    overflow: hidden;
}

/* Toolbar */
.table-toolbar {
    display: grid;
    gap: 0.65rem;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid var(--oal-border);
    background: linear-gradient(90deg, #f7fafc, #edf6fb);
}

.toolbar-title {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: var(--oal-muted);
}

.column-toolbar-disclosure {
    display: grid;
    gap: 0.65rem;
}

.column-toolbar-disclosure > summary {
    cursor: pointer;
    list-style: none;
}

.column-toolbar-disclosure > summary::-webkit-details-marker {
    display: none;
}

.column-toolbar-disclosure > summary::after {
    content: "Show";
    margin-left: 0.5rem;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: none;
    color: #355670;
}

.column-toolbar-disclosure[open] > summary::after {
    content: "Hide";
}

.toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.toolbar-btn {
    border: 1px solid #b8c8df;
    background: #fff;
    color: #1b3249;
    border-radius: 8px;
    padding: 0.36rem 0.62rem;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 120ms ease;
}

.toolbar-btn:hover {
    background: #eff6fb;
    border-color: #94adc9;
}

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

.tag-toolbar-disclosure {
    display: grid;
    gap: 0.55rem;
    border: 1px solid var(--oal-border);
    border-radius: 10px;
    background: #fdfefe;
    padding: 0.55rem 0.65rem;
}

.tag-toolbar-disclosure > summary {
    cursor: pointer;
    list-style: none;
}

.tag-toolbar-disclosure > summary::-webkit-details-marker {
    display: none;
}

.tag-toolbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
}

.tag-filter-status {
    font-size: 0.82rem;
    color: var(--oal-muted);
}

.tag-groups {
    display: grid;
    gap: 0.55rem;
}

.tag-group {
    display: grid;
    gap: 0.35rem;
}

.tag-group-title {
    margin: 0;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #355670;
}

.tag-group-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag-filter-chip,
.table-tag {
    border: 1px solid #b8c8df;
    background: #fff;
    color: #1b3249;
    border-radius: 999px;
    padding: 0.2rem 0.55rem;
    font-size: 0.78rem;
    line-height: 1.2;
    cursor: pointer;
    transition: all 120ms ease;
}

.tag-filter-chip:hover,
.table-tag:hover {
    background: #eff6fb;
    border-color: #94adc9;
}

.tag-filter-chip.is-active,
.table-tag.is-active {
    background: #0f6c8b;
    color: #fff;
    border-color: #0f6c8b;
}

/* Column chips */
.column-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.column-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.65rem;
    border-radius: 999px;
    border: 1px solid var(--oal-border);
    background: #fff;
    font-size: 0.82rem;
    cursor: pointer;
    user-select: none;
    transition: all 120ms ease;
}

.column-chip:hover {
    border-color: #b8c8df;
    background: #f7fbfd;
}

.column-chip.is-off {
    color: var(--oal-muted);
    background: #f1f5f9;
}

.column-chip input {
    accent-color: var(--oal-accent);
}

/* Table wrap */
.table-wrap {
    overflow-x: auto;
    padding: 0.45rem;
}

#algorithms {
    width: 100%;
    min-width: 980px;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--oal-table-font-size);
}

#algorithms thead th {
    background: #f9fcff;
    color: #1d324a;
    border-bottom: 1px solid var(--oal-border);
    font-weight: 700;
    white-space: nowrap;
}

#algorithms td {
    vertical-align: top;
    line-height: 1.4;
    font-size: inherit;
}

#algorithms td * {
    font-size: inherit;
}

#algorithms td .table-tag {
    margin: 0.08rem 0.2rem 0.08rem 0;
}

#algorithms th:first-child {
    position: sticky;
    left: 0;
    z-index: 5;
    background: #f9fcff;
    box-shadow: 1px 0 0 0 var(--oal-border);
}

#algorithms td:first-child {
    position: sticky;
    left: 0;
    z-index: 2;
    background: #fcfeff;
    box-shadow: 1px 0 0 0 var(--oal-border);
}

#algorithms tbody tr:nth-of-type(odd) td {
    background: #fcfeff;
}

#algorithms tbody tr:nth-of-type(even) td {
    background: #f8fbfe;
}

#algorithms tbody tr:hover td {
    background: var(--oal-accent-soft);
}

#algorithms tbody tr:hover td:first-child {
    background: #deedf6;
}

#algorithms a {
    color: #085f75;
}

#algorithms thead input {
    width: 100%;
    padding: 0.35rem 0.45rem;
    border-radius: 6px;
    border: 1px solid var(--oal-border);
    background: #fff;
    color: var(--oal-text);
    font-size: inherit;
}