/* ===== Database Index Visualizer Styles ===== */

:root {
    --mysql-color: #00758F;
    --mysql-bg: #0d1f24;
    --mysql-light: #153038;
    --pg-color: #336791;
    --pg-bg: #0d1724;
    --pg-light: #152538;
    --mongo-color: #47A248;
    --mongo-bg: #0d1f10;
    --mongo-light: #15301a;
    --redis-color: #DC382D;
    --redis-bg: #2a1616;
    --redis-light: #3d1c1c;
    --dbiv-bg: #141922;
    --dbiv-card-bg: #1a2030;
    --dbiv-border: #2a3444;
    --dbiv-text: #e0e4ea;
    --dbiv-text-light: #8892a4;
    --dbiv-radius: 8px;
    --dbiv-shadow: 0 2px 8px rgba(0,0,0,0.3);
    --dbiv-accent: #00758F;
    --dbiv-accent-bg: #0d1f24;
    --dbiv-accent-light: #153038;
    --dbiv-transition: 0.25s ease;
}

.dbiv-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 10px;
    color: var(--dbiv-text);
}

.dbiv-page *,
.dbiv-page *::before,
.dbiv-page *::after {
    box-sizing: border-box;
}

.dbiv-page button,
.dbiv-page select,
.dbiv-page input,
.dbiv-page textarea {
    color: var(--dbiv-text);
    font-family: inherit;
}

/* ===== Sticky Panel ===== */

/* Database Navigation */
.db-nav {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 4px;
}

.db-tab {
    flex: 1;
    padding: 10px 16px;
    border: 2px solid transparent;
    border-radius: 6px;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--dbiv-transition);
    color: var(--dbiv-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.db-tab:hover {
    background: var(--dbiv-bg);
}

.db-tab.active[data-db="mysql"] {
    background: var(--mysql-bg);
    border-color: var(--mysql-color);
    color: var(--mysql-color);
}

.db-tab.active[data-db="postgresql"] {
    background: var(--pg-bg);
    border-color: var(--pg-color);
    color: var(--pg-color);
}

.db-tab.active[data-db="mongodb"] {
    background: var(--mongo-bg);
    border-color: var(--mongo-color);
    color: var(--mongo-color);
}

.db-tab.active[data-db="redis"] {
    background: var(--redis-bg);
    border-color: var(--redis-color);
    color: var(--redis-color);
}

.db-icon {
    font-size: 18px;
}

/* Global Controls */
.global-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    flex-wrap: wrap;
    gap: 8px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 8px 12px;
    transition: none;
}

.global-controls.is-fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 0 0 var(--dbiv-radius) var(--dbiv-radius);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.global-controls-placeholder {
    display: none;
}

.global-controls-placeholder.is-active {
    display: block;
}

.controls-left {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.ctrl-btn {
    padding: 7px 16px;
    border: 1px solid var(--dbiv-border);
    border-radius: 6px;
    background: var(--dbiv-card-bg);
    color: var(--dbiv-text);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--dbiv-transition);
}

.ctrl-btn:hover {
    background: var(--dbiv-border);
}

.run-btn { color: var(--dbiv-accent); border-color: var(--dbiv-accent); }
.run-btn:hover { background: var(--dbiv-accent); color: #fff; }
.burst-btn { color: var(--dbiv-accent); border-color: var(--dbiv-accent); }
.burst-btn:hover { background: var(--dbiv-accent); color: #fff; }
.error-btn { color: #f38ba8; border-color: #f38ba8; }
.error-btn:hover { background: #f38ba8; color: #1a2030; }
.pause-btn { color: var(--dbiv-text-light); border-color: var(--dbiv-border); }
.pause-btn:hover { border-color: var(--dbiv-text-light); background: var(--dbiv-text-light); color: var(--dbiv-bg); }
.reset-btn { color: var(--dbiv-text-light); border-color: var(--dbiv-border); }
.reset-btn:hover { border-color: var(--dbiv-text-light); background: var(--dbiv-text-light); color: var(--dbiv-bg); }

.compare-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--dbiv-text);
    cursor: pointer;
}

.compare-toggle input { display: none; }

.toggle-slider {
    width: 36px;
    height: 20px;
    background: #3a4455;
    border-radius: 10px;
    position: relative;
    transition: background var(--dbiv-transition);
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #e0e4ea;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform var(--dbiv-transition);
}

.compare-toggle input:checked + .toggle-slider {
    background: var(--dbiv-accent);
}

.compare-toggle input:checked + .toggle-slider::after {
    transform: translateX(16px);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 4px;
    margin-bottom: 10px;
}

.stat-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 6px 8px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 6px;
}

.stat-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--dbiv-text-light);
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--dbiv-text);
    line-height: 1.2;
}

/* Mode Tabs */
.mode-tabs {
    display: flex;
    gap: 2px;
    margin-bottom: 8px;
    overflow-x: auto;
    padding-bottom: 2px;
    background: var(--dbiv-card-bg);
    border-radius: var(--dbiv-radius);
    padding: 4px 4px 0;
    border: 1px solid var(--dbiv-border);
    border-bottom: none;
}

.mode-tab {
    padding: 6px 12px;
    border: none;
    border-bottom: 2px solid transparent;
    background: transparent;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    color: var(--dbiv-text-light);
    transition: all var(--dbiv-transition);
}

.mode-tab:hover {
    color: var(--dbiv-text);
    border-bottom-color: var(--dbiv-text-light);
}

.mode-tab.active {
    color: var(--dbiv-accent);
    border-bottom-color: var(--dbiv-accent);
    font-weight: 700;
}

/* Pattern Description */
.pattern-desc {
    font-size: 13px;
    color: var(--dbiv-text-light);
    padding: 8px 12px;
    background: var(--dbiv-accent-bg);
    border-left: 3px solid var(--dbiv-accent);
    border-radius: 0 6px 6px 0;
    margin-bottom: 12px;
    line-height: 1.5;
}

/* ===== Pattern Details (Collapsible) ===== */
.pattern-details {
    margin-bottom: 12px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    overflow: hidden;
}

.pattern-details-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 14px;
    border: none;
    background: transparent;
    color: var(--dbiv-text);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--dbiv-transition);
}

.pattern-details-toggle:hover {
    background: var(--dbiv-bg);
}

.pattern-details-toggle-icon {
    font-size: 10px;
    transition: transform var(--dbiv-transition);
    color: var(--dbiv-accent);
}

.pattern-details-toggle[aria-expanded="true"] .pattern-details-toggle-icon {
    transform: rotate(90deg);
}

.pattern-details-body {
    display: none;
    padding: 0 14px 14px;
}

.pattern-details-body.expanded {
    display: block;
}

.pattern-details-section {
    margin-bottom: 12px;
}

.pattern-details-section:last-child {
    margin-bottom: 0;
}

.pattern-details-section-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--dbiv-accent);
    margin-bottom: 6px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--dbiv-border);
}

.pattern-details-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pattern-details-list li {
    font-size: 12px;
    color: var(--dbiv-text-light);
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--dbiv-bg);
    line-height: 1.4;
}

.pattern-details-list li::before {
    content: '\2022';
    color: var(--dbiv-accent);
    margin-right: 6px;
    font-weight: 700;
}

.pattern-concepts-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.pattern-concept {
    display: flex;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 4px;
    background: var(--dbiv-bg);
    font-size: 12px;
    line-height: 1.4;
}

.pattern-concept-term {
    font-weight: 700;
    color: var(--dbiv-accent);
    white-space: nowrap;
    min-width: 80px;
    flex-shrink: 0;
}

.pattern-concept-def {
    color: var(--dbiv-text-light);
}

/* Visualization Area */
.viz-area {
    display: grid;
    grid-template-columns: 220px 1fr 200px;
    gap: 16px;
    min-height: 400px;
    position: relative;
    margin-bottom: 12px;
    padding: 16px;
    background: var(--dbiv-bg);
    border-radius: var(--dbiv-radius);
    border: 1px solid var(--dbiv-border);
    box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.viz-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 0;
    overflow-y: auto;
    z-index: 1;
}

/* Query Input Card */
.query-card {
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 10px;
    position: relative;
    box-shadow: var(--dbiv-shadow);
}

.query-card-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 6px;
}

.query-card-icon { font-size: 18px; }

.query-card-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--dbiv-text);
}

.query-input {
    width: 100%;
    padding: 6px 8px;
    border: 1px solid var(--dbiv-border);
    border-radius: 4px;
    font-size: 11px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    background: var(--dbiv-bg);
    color: var(--dbiv-accent);
    resize: none;
    min-height: 50px;
    margin-bottom: 6px;
}

.query-input:focus {
    outline: none;
    border-color: var(--dbiv-accent);
}

.preset-buttons {
    display: flex;
    gap: 3px;
    flex-wrap: wrap;
    margin-bottom: 6px;
}

.preset-btn {
    font-size: 9px;
    padding: 2px 6px;
    background: var(--dbiv-accent-bg);
    border: 1px solid var(--dbiv-accent-light);
    border-radius: 3px;
    cursor: pointer;
    color: var(--dbiv-accent);
    font-family: monospace;
    transition: all var(--dbiv-transition);
}

.preset-btn:hover {
    background: var(--dbiv-accent);
    color: white;
}

.card-send-btn {
    width: 100%;
    padding: 5px 0;
    border: 1px solid var(--dbiv-accent);
    border-radius: 4px;
    background: transparent;
    color: var(--dbiv-accent);
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--dbiv-transition);
}

.card-send-btn:hover {
    background: var(--dbiv-accent);
    color: white;
}

/* Port connectors */
.port {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--dbiv-accent);
    border-radius: 50%;
    border: 2px solid var(--dbiv-bg);
    z-index: 2;
    box-shadow: 0 0 4px rgba(0,0,0,0.3);
}

.port-right {
    right: -7px;
    top: 50%;
    transform: translateY(-50%);
}

.port-left {
    left: -7px;
    top: 50%;
    transform: translateY(-50%);
}

/* Index Header */
.index-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--dbiv-accent-bg);
    border-radius: var(--dbiv-radius) var(--dbiv-radius) 0 0;
    border: 1px solid var(--dbiv-accent-light);
    border-bottom: none;
}

.index-name {
    font-weight: 700;
    font-size: 14px;
    color: var(--dbiv-accent);
}

.index-status {
    font-size: 10px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.index-status.ready { background: #1a3d2a; color: #6fcf97; }
.index-status.scanning { background: #3d3a1a; color: #f0c674; }
.index-status.miss { background: #3d1a1a; color: #f38ba8; }

.index-body {
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-accent-light);
    border-top: none;
    border-radius: 0 0 var(--dbiv-radius) var(--dbiv-radius);
    padding: 16px;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

/* ===== B-Tree / Tree Structures ===== */
.tree-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    width: 100%;
    position: relative;
}

.tree-level {
    display: flex;
    justify-content: center;
    gap: 8px;
    width: 100%;
}

.tree-level-label {
    position: absolute;
    left: 4px;
    font-size: 9px;
    color: var(--dbiv-text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tree-node {
    display: flex;
    border: 2px solid var(--dbiv-border);
    border-radius: 6px;
    background: var(--dbiv-bg);
    overflow: hidden;
    transition: all 0.3s;
    position: relative;
}

.tree-node.highlighted {
    border-color: var(--dbiv-accent);
    box-shadow: 0 0 12px rgba(var(--dbiv-accent), 0.4);
    z-index: 5;
}

.tree-node.faded {
    opacity: 0.3;
    transition: opacity 0.4s;
}

.tree-key {
    padding: 4px 8px;
    font-size: 11px;
    font-weight: 600;
    font-family: monospace;
    color: var(--dbiv-text);
    border-right: 1px solid var(--dbiv-border);
    min-width: 30px;
    text-align: center;
    transition: all 0.3s;
}

.tree-key:last-child {
    border-right: none;
}

.tree-key.active {
    background: var(--dbiv-accent);
    color: white;
}

.tree-key.compared {
    background: var(--dbiv-accent-bg);
    color: var(--dbiv-accent);
}

.tree-pointer {
    padding: 4px 4px;
    font-size: 9px;
    color: var(--dbiv-text-light);
    border-right: 1px solid var(--dbiv-border);
    display: flex;
    align-items: center;
}

/* SVG connectors for tree */
.tree-svg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    overflow: visible;
}

.tree-connector {
    fill: none;
    stroke: var(--dbiv-border);
    stroke-width: 1.5;
    stroke-linecap: round;
}

.tree-connector.active {
    stroke: var(--dbiv-accent);
    stroke-width: 2.5;
    filter: drop-shadow(0 0 3px var(--dbiv-accent));
}

/* ===== Hash Structure ===== */
.hash-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.hash-function {
    text-align: center;
    padding: 8px;
    border: 2px dashed var(--dbiv-accent);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--dbiv-accent);
    font-family: monospace;
    margin-bottom: 8px;
}

.hash-function.active {
    background: var(--dbiv-accent);
    color: white;
    border-style: solid;
}

.hash-bucket {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    background: var(--dbiv-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 6px;
    transition: all 0.3s;
}

.hash-bucket.targeted {
    border-color: var(--dbiv-accent);
    background: var(--dbiv-accent-bg);
    box-shadow: 0 0 8px rgba(0,0,0,0.3);
}

.hash-bucket-id {
    font-size: 10px;
    font-weight: 700;
    color: var(--dbiv-accent);
    min-width: 24px;
}

.hash-bucket-items {
    display: flex;
    gap: 3px;
    flex-wrap: wrap;
    flex: 1;
}

.hash-item {
    font-size: 10px;
    padding: 1px 5px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 3px;
    font-family: monospace;
    color: var(--dbiv-text-light);
}

.hash-item.matched {
    background: var(--dbiv-accent-bg);
    border-color: var(--dbiv-accent);
    color: var(--dbiv-accent);
}

/* ===== Data Pages / Results ===== */
.data-page {
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 8px;
    margin-bottom: 6px;
}

.data-page-header {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--dbiv-text-light);
    letter-spacing: 0.5px;
    margin-bottom: 4px;
    font-weight: 600;
}

.data-row {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 6px;
    font-size: 11px;
    font-family: monospace;
    color: var(--dbiv-text-light);
    border-radius: 3px;
    transition: all 0.3s;
}

.data-row.scanned {
    background: #3d3a1a;
    color: #f0c674;
}

.data-row.matched {
    background: #1a3d2a;
    color: #6fcf97;
}

.data-row-id {
    min-width: 20px;
    font-weight: 600;
    color: var(--dbiv-text-light);
}

.data-row-value {
    flex: 1;
}

.result-card {
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 10px;
    position: relative;
}

.result-card-header {
    font-size: 12px;
    font-weight: 700;
    color: var(--dbiv-text);
    margin-bottom: 6px;
}

.result-count {
    font-size: 10px;
    color: var(--dbiv-text-light);
}

/* ===== Skip List ===== */
.skiplist-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-x: auto;
}

.skiplist-level {
    display: flex;
    align-items: center;
    gap: 1px;
    min-width: min-content;
    white-space: nowrap;
}

.skiplist-level-label {
    font-size: 9px;
    color: var(--dbiv-text-light);
    min-width: 14px;
    font-weight: 600;
}

.skiplist-node {
    padding: 2px 3px;
    border: 1px solid var(--dbiv-border);
    border-radius: 3px;
    font-size: 9px;
    font-weight: 600;
    font-family: monospace;
    color: var(--dbiv-text-light);
    background: var(--dbiv-bg);
    transition: all 0.3s;
    text-align: center;
    white-space: nowrap;
    flex-shrink: 0;
}

.skiplist-node.highlighted {
    border-color: var(--dbiv-accent);
    background: var(--dbiv-accent-bg);
    color: var(--dbiv-accent);
}

.skiplist-node.empty {
    border: none;
    background: transparent;
    color: transparent;
    min-width: 6px;
    max-width: 6px;
    padding: 0;
    font-size: 0;
}

.skiplist-arrow {
    font-size: 7px;
    color: var(--dbiv-border);
    flex-shrink: 0;
}

.skiplist-arrow.active {
    color: var(--dbiv-accent);
}

/* ===== Block Range (BRIN) ===== */
.block-range {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.block-cell {
    width: 50px;
    padding: 4px;
    border: 1px solid var(--dbiv-border);
    border-radius: 4px;
    background: var(--dbiv-bg);
    text-align: center;
    font-size: 9px;
    font-family: monospace;
    color: var(--dbiv-text-light);
    transition: all 0.3s;
}

.block-cell.scanned {
    border-color: #f0c674;
    background: #3d3a1a;
    color: #f0c674;
}

.block-cell.matched {
    border-color: var(--dbiv-accent);
    background: var(--dbiv-accent-bg);
    color: var(--dbiv-accent);
}

.block-cell.skipped {
    opacity: 0.3;
}

.block-cell-range {
    font-weight: 700;
    font-size: 10px;
}

.block-cell-label {
    font-size: 8px;
    color: var(--dbiv-text-light);
}

/* ===== EXPLAIN Plan ===== */
.explain-flow {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.explain-step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: 1px solid var(--dbiv-border);
    border-radius: 6px;
    background: var(--dbiv-bg);
    transition: all 0.3s;
}

.explain-step.active {
    border-color: var(--dbiv-accent);
    background: var(--dbiv-accent-bg);
}

.explain-step.completed {
    border-color: #6fcf97;
    background: #1a3d2a;
}

.explain-step-icon {
    font-size: 16px;
    min-width: 24px;
    text-align: center;
}

.explain-step-content {
    flex: 1;
}

.explain-step-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--dbiv-text);
}

.explain-step-detail {
    font-size: 10px;
    color: var(--dbiv-text-light);
    font-family: monospace;
}

.explain-arrow {
    text-align: center;
    color: var(--dbiv-text-light);
    font-size: 14px;
}

/* ===== Comparison Panel ===== */
.comparison-panel {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.comparison-side {
    flex: 1;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    padding: 12px;
}

.comparison-title {
    font-size: 13px;
    font-weight: 700;
    color: var(--dbiv-text);
    margin-bottom: 8px;
    text-align: center;
}

.comparison-stats {
    font-size: 12px;
    color: var(--dbiv-text-light);
    font-family: monospace;
}

.comparison-stat-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
    border-bottom: 1px dotted var(--dbiv-border);
}

.comparison-stat-row:last-child {
    border-bottom: none;
}

.comparison-faster {
    color: #6fcf97;
    font-weight: 700;
}

.comparison-slower {
    color: #f38ba8;
    font-weight: 700;
}

/* ===== Animation Layer ===== */
.animation-layer {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 10;
    overflow: hidden;
}

/* Flying dot */
.flying-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--dbiv-accent);
    z-index: 11;
    pointer-events: none;
    box-shadow: 0 0 8px var(--dbiv-accent), 0 0 3px rgba(0,0,0,0.3);
}

.flying-dot .dot-label {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 9px;
    font-weight: 600;
    white-space: nowrap;
    background: rgba(26,32,48,0.95);
    padding: 1px 4px;
    border-radius: 3px;
    color: #e0e4ea;
    border: 1px solid var(--dbiv-border);
}

/* Pipe (SVG connection line) */
.pipe-bg {
    fill: none;
    stroke: var(--dbiv-border);
    stroke-width: 2;
    stroke-linecap: round;
    opacity: 0.4;
}

.pipe-flow {
    fill: none;
    stroke: var(--dbiv-accent);
    stroke-width: 2.5;
    stroke-linecap: round;
    opacity: 0.8;
    filter: drop-shadow(0 0 3px var(--dbiv-accent));
}

.pipe-fade {
    opacity: 0;
    transition: opacity 0.5s ease-out;
}

/* Card flash */
.card-flash-green {
    box-shadow: 0 0 16px rgba(40, 167, 69, 0.4) !important;
    border-color: #6fcf97 !important;
    transition: all 0.15s;
}

.card-flash-red {
    box-shadow: 0 0 16px rgba(243, 139, 168, 0.4) !important;
    border-color: #f38ba8 !important;
    transition: all 0.15s;
}

/* Shake animation */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-4px); }
    40% { transform: translateX(4px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

.shake { animation: shake 0.4s ease-in-out; }

/* Scan animation for full table scan */
@keyframes scanPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.scanning-anim { animation: scanPulse 0.3s ease; }

/* Extra Panels */
.extra-panels {
    margin-bottom: 12px;
}

/* ===== Event Log ===== */
.event-log-container {
    border: 1px solid var(--dbiv-border);
    border-radius: var(--dbiv-radius);
    overflow: hidden;
    margin-bottom: 20px;
}

.event-log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--dbiv-card-bg);
    border-bottom: 1px solid var(--dbiv-border);
    font-size: 13px;
    font-weight: 700;
    color: var(--dbiv-text);
}

.log-clear-btn {
    padding: 2px 10px;
    border: 1px solid var(--dbiv-border);
    border-radius: 4px;
    background: var(--dbiv-card-bg);
    color: var(--dbiv-text);
    font-size: 11px;
    cursor: pointer;
}

.event-log-header > div { display: flex; gap: 6px; }

.log-clear-btn:hover { background: var(--dbiv-border); }

.event-log {
    height: 160px;
    overflow-y: auto;
    padding: 6px 12px;
    background: #1e1e2e;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 11px;
    line-height: 1.6;
}

.log-entry {
    display: flex;
    gap: 8px;
}

.log-time {
    color: #6c7086;
    min-width: 70px;
}

.log-type {
    font-weight: 700;
    min-width: 60px;
    text-align: center;
    border-radius: 3px;
    padding: 0 4px;
}

.log-type.QUERY { color: #89b4fa; }
.log-type.SCAN { color: #f9e2af; }
.log-type.LOOKUP { color: #a6e3a1; }
.log-type.FETCH { color: #94e2d5; }
.log-type.MISS { color: #f38ba8; }
.log-type.RESULT { color: #cba6f7; }
.log-type.HASH { color: #f5c2e7; }
.log-type.EXPLAIN { color: #89dceb; }
.log-type.INDEX { color: #a6e3a1; }

.log-text {
    color: #cdd6f4;
}

/* ===== GIN Index ===== */
.gin-container {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.gin-entry {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: var(--dbiv-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 4px;
    transition: all 0.3s;
}

.gin-entry.matched {
    border-color: var(--dbiv-accent);
    background: var(--dbiv-accent-bg);
}

.gin-token {
    font-size: 11px;
    font-weight: 700;
    color: var(--dbiv-accent);
    font-family: monospace;
    min-width: 60px;
}

.gin-posting-list {
    display: flex;
    gap: 3px;
    flex-wrap: wrap;
}

.gin-doc-ref {
    font-size: 9px;
    padding: 1px 4px;
    background: var(--dbiv-card-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 3px;
    font-family: monospace;
    color: var(--dbiv-text-light);
}

.gin-doc-ref.matched {
    border-color: var(--dbiv-accent);
    color: var(--dbiv-accent);
}

/* ===== GiST Index (Bounding Boxes) ===== */
.gist-container {
    width: 100%;
    position: relative;
    height: 200px;
    background: var(--dbiv-bg);
    border: 1px solid var(--dbiv-border);
    border-radius: 4px;
    overflow: hidden;
}

.gist-box {
    position: absolute;
    border: 2px solid var(--dbiv-border);
    border-radius: 4px;
    transition: all 0.3s;
}

.gist-box.level-0 {
    border-color: var(--dbiv-accent);
    border-style: dashed;
}

.gist-box.level-1 {
    border-color: var(--dbiv-text-light);
}

.gist-box.highlighted {
    border-color: var(--dbiv-accent);
    background: rgba(0, 117, 143, 0.15);
    box-shadow: 0 0 8px rgba(0, 117, 143, 0.3);
}

.gist-point {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--dbiv-text-light);
    transform: translate(-50%, -50%);
    transition: all 0.3s;
}

.gist-point.matched {
    background: var(--dbiv-accent);
    box-shadow: 0 0 6px var(--dbiv-accent);
    width: 10px;
    height: 10px;
}

.gist-query-box {
    position: absolute;
    border: 2px solid #f38ba8;
    background: rgba(243, 139, 168, 0.1);
    border-radius: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
    .viz-area {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .viz-query,
    .viz-results {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .port-left, .port-right {
        display: none;
    }
}

@media (max-width: 600px) {
    .db-nav {
        flex-direction: column;
    }

    .stats-bar {
        flex-wrap: wrap;
    }

    .stat-item {
        flex: 1 1 45%;
    }

    .global-controls {
        flex-direction: column;
    }

    .comparison-panel {
        flex-direction: column;
    }
}