:root {
    --bg-main: #0f172a;
    /* Deep navy */
    --bg-panel: #1e293b;
    --bg-hover: #334155;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border-color: #334155;

    --color-primary: #3b82f6;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-danger: #ef4444;

    --tag-select: #3b82f6;
    --tag-insert: #10b981;
    --tag-update: #f59e0b;
    --tag-delete: #ef4444;
    --tag-other: #64748b;
}

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

body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
}

pre,
code,
textarea {
    font-family: 'JetBrains Mono', monospace;
}

.app-layout {
    display: flex;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 320px;
    background-color: var(--bg-panel);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.5rem;
    overflow-y: auto;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-success);
}

.brand h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
}

.section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.section h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    font-weight: 600;
}

#log-input {
    width: 100%;
    height: 150px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-main);
    padding: 0.75rem;
    font-size: 0.8rem;
    resize: vertical;
    outline: none;
}

#log-input:focus {
    border-color: var(--color-primary);
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: 'Inter';
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
    flex: 1;
}

.btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.btn-primary:hover {
    background-color: #2563eb;
}

.btn-outline {
    background-color: transparent;
    color: var(--text-muted);
    border-color: var(--border-color);
}

.btn-outline:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

.storage-info {
    text-align: right;
    color: var(--text-muted);
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.stat-box {
    background: var(--bg-main);
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-box.warning {
    border-color: var(--color-warning);
}

.stat-val {
    font-size: 1.25rem;
    font-weight: 700;
}

.stat-box.warning .stat-val {
    color: var(--color-warning);
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.heatmap-container {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 4px;
}

.heat-cell {
    aspect-ratio: 1;
    background-color: var(--bg-main);
    border-radius: 3px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6rem;
    color: rgba(255, 255, 255, 0.3);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-main);
    overflow: hidden;
}

.toolbar {
    padding: 1rem 1.5rem;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border-color);
}

.filter-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
}

.search-input,
select,
input[type="number"] {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.85rem;
    outline: none;
}

.search-input {
    flex: 1;
    min-width: 200px;
}

.search-input:focus,
select:focus,
input[type="number"]:focus {
    border-color: var(--color-primary);
}

input[type="number"] {
    width: 80px;
}

.duration-filter {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.timeline-container {
    flex: 1;
    padding: 1.5rem;
    overflow-y: auto;
    position: relative;
}

.empty-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.query-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding-left: 1.5rem;
    border-left: 2px solid var(--border-color);
}

/* Query Card */
.query-card {
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    transition: border-color 0.2s;
}

.query-card:hover {
    border-color: var(--text-muted);
}

/* Timeline Dot */
.query-card::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 1.25rem;
    width: 12px;
    height: 12px;
    background: var(--bg-panel);
    border: 2px solid var(--text-muted);
    border-radius: 50%;
    transform: translateX(-50%);
}

.query-card.is-slow {
    border-color: rgba(245, 158, 11, 0.4);
}

.query-card.is-slow::before {
    border-color: var(--color-warning);
    background: rgba(245, 158, 11, 0.2);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.query-type {
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    text-transform: uppercase;
}

.type-select {
    background: rgba(59, 130, 246, 0.15);
    color: var(--tag-select);
}

.type-insert {
    background: rgba(16, 185, 129, 0.15);
    color: var(--tag-insert);
}

.type-update {
    background: rgba(245, 158, 11, 0.15);
    color: var(--tag-update);
}

.type-delete {
    background: rgba(239, 68, 68, 0.15);
    color: var(--tag-delete);
}

.type-other {
    background: rgba(100, 116, 139, 0.15);
    color: var(--tag-other);
}

.query-duration {
    font-size: 0.85rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-muted);
}

.is-slow .query-duration {
    color: var(--color-warning);
    font-weight: 700;
}

.query-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card-actions button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.2rem;
    border-radius: 4px;
}

.card-actions button:hover {
    background: var(--bg-hover);
    color: var(--text-main);
}

.card-actions svg {
    width: 16px;
    height: 16px;
}

.query-sql {
    background: var(--bg-main);
    padding: 0.75rem;
    border-radius: 4px;
    font-size: 0.85rem;
    overflow-x: auto;
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-all;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--color-success);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 500;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: opacity 0.3s;
    z-index: 1000;
}

.toast.hidden {
    opacity: 0;
    pointer-events: none;
}