/* ── Bioluminescent Lab ─────────────────────────────────────────────
   Design tokens. State colors must match STATE_COLORS in js/config.js */
:root {
    --bg-deep: #020409;
    --bg-mid: #0b1120;
    --panel-bg: rgba(10, 15, 26, 0.72);
    --panel-border: rgba(148, 163, 184, 0.14);
    --panel-radius: 14px;
    --text: #e2e8f0;
    --text-dim: #94a3b8;
    --text-faint: #64748b;
    --accent: #2dd4bf;
    --accent-soft: rgba(45, 212, 191, 0.35);
    --violet: #a78bfa;
    --amber: #fbbf24;
    --font-ui: -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, Roboto, sans-serif;
    --font-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, monospace;
}

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

body {
    background: radial-gradient(1400px 900px at 50% 38%, var(--bg-mid) 0%, #060a14 55%, var(--bg-deep) 100%);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    font-family: var(--font-ui);
    color: var(--text);
    font-size: 12px;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    background: transparent;
}

/* ── HUD: current state badge + history ticker ── */
#hud {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 10;
    pointer-events: none;
}

#stateBadge {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 9px 18px;
    background: var(--panel-bg);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border: 1px solid var(--panel-border);
    border-radius: 999px;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

#stateBadge .state-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    transition: background-color 0.35s ease, box-shadow 0.35s ease;
}

#stateBadgeName {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2.5px;
    font-family: var(--font-mono);
    transition: color 0.35s ease;
}

#stateTicker {
    display: flex;
    gap: 3px;
    align-items: center;
    min-height: 12px;
}

#stateTicker .tick {
    width: 7px;
    height: 11px;
    border-radius: 2px;
    opacity: 0.85;
}

#stateTicker .tick:last-child {
    outline: 1px solid rgba(255, 255, 255, 0.55);
    outline-offset: 1px;
}

/* ── Glass panels ── */
.panel {
    position: absolute;
    top: 18px;
    background: var(--panel-bg);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    padding: 14px 16px;
    z-index: 10;
}

#controlsPanel {
    left: 18px;
    width: 250px;
    max-height: calc(100vh - 114px);
    overflow-y: auto;
}

#markovPanel {
    right: 18px;
    width: 372px;
    max-height: calc(100vh - 36px);
    overflow-y: auto;
}

#markovPanel::-webkit-scrollbar {
    width: 8px;
}

#controlsPanel::-webkit-scrollbar {
    width: 8px;
}

#markovPanel::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.25);
    border-radius: 4px;
}

#controlsPanel::-webkit-scrollbar-thumb {
    background: rgba(148, 163, 184, 0.25);
    border-radius: 4px;
}

.panel h3 {
    color: var(--text-dim);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.6px;
    cursor: pointer;
    user-select: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 4px;
}

.panel h3:hover {
    color: var(--text);
}

.panel h3.subheader {
    margin-top: 14px;
    border-top: 1px solid var(--panel-border);
    padding-top: 12px;
}

.panel-toggle {
    font-size: 11px;
    color: var(--text-faint);
    transition: transform 0.3s;
}

.panel-toggle.collapsed {
    transform: rotate(-90deg);
}

.panel-content {
    overflow: hidden;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out;
    max-height: 2000px;
    opacity: 1;
}

.panel-content.collapsed {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
}

#matrixContent {
    max-height: 1500px;
}

/* ── Controls ── */
.control-group {
    margin: 13px 0;
}

.control-section-title {
    margin: 18px 0 10px;
    padding-top: 13px;
    border-top: 1px solid var(--panel-border);
    color: var(--text);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dim);
    margin-bottom: 6px;
    font-size: 11px;
    letter-spacing: 0.2px;
}

.control-label span:first-child {
    flex: 1;
    margin-right: 5px;
}

.control-value {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--accent);
}

.slider {
    width: 100%;
    height: 4px;
    background: rgba(148, 163, 184, 0.22);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 13px;
    height: 13px;
    background: var(--text);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--accent);
    box-shadow: 0 0 8px var(--accent-soft);
    transition: box-shadow 0.2s;
}

.slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 12px var(--accent);
}

.slider::-moz-range-thumb {
    width: 13px;
    height: 13px;
    background: var(--text);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--accent);
    box-shadow: 0 0 8px var(--accent-soft);
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 40px;
    height: 21px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background-color: rgba(148, 163, 184, 0.25);
    transition: 0.25s;
    border-radius: 21px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 15px;
    width: 15px;
    left: 3px;
    bottom: 3px;
    background-color: var(--text-dim);
    transition: 0.25s;
    border-radius: 50%;
}

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

input:checked + .toggle-slider:before {
    transform: translateX(19px);
    background-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-soft);
}

.shape-select {
    width: 100%;
    padding: 8px 10px;
    background-color: rgba(15, 23, 42, 0.8);
    color: var(--text);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    font-family: var(--font-ui);
    font-size: 12px;
    cursor: pointer;
    outline: none;
    margin-top: 5px;
}

.shape-select:hover,
.shape-select:focus {
    border-color: var(--accent-soft);
}

.shape-select option {
    background-color: #0f172a;
    color: var(--text);
}

.button-row {
    display: flex;
    gap: 8px;
}

.button-row .control-button {
    flex: 1;
}

.control-button {
    width: 100%;
    padding: 9px 10px;
    margin: 4px 0;
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--panel-border);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
}

.control-button:hover {
    border-color: var(--accent-soft);
    color: var(--text);
    box-shadow: 0 0 12px rgba(45, 212, 191, 0.12);
}

.control-button:active {
    transform: translateY(1px);
}

.control-button.paused {
    border-color: rgba(251, 191, 36, 0.6);
    color: var(--amber);
    background: rgba(251, 191, 36, 0.08);
}

#performanceReadout {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px 10px;
    margin: 10px 0 14px;
    color: var(--text-faint);
    font-size: 10px;
}

#performanceReadout div {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    min-width: 0;
}

#performanceReadout b {
    color: var(--text-dim);
    font-family: var(--font-mono);
    font-weight: 600;
}

/* ── Markov panel: state rows, bars, stats ── */
.state-info {
    margin: 7px 0;
    padding: 7px 9px;
    background: rgba(148, 163, 184, 0.05);
    border-left: 3px solid var(--text-faint);
    border-radius: 0 8px 8px 0;
    transition: background-color 0.3s;
}

.state-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.state-name {
    font-size: 11px;
    letter-spacing: 0.6px;
    color: var(--text-dim);
}

.state-info.current .state-name {
    color: var(--text);
    font-weight: 600;
}

.state-prob {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text);
}

.prob-bar {
    width: 100%;
    height: 5px;
    background-color: rgba(148, 163, 184, 0.15);
    margin-top: 5px;
    border-radius: 3px;
    overflow: hidden;
}

.prob-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.stats-row {
    display: flex;
    gap: 18px;
    margin-top: 12px;
    font-size: 11px;
    color: var(--text-faint);
}

.stats-row b {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-dim);
}

/* ── Transition matrix ── */
.matrix-table {
    width: 100%;
    border-collapse: collapse;
    margin: 10px 0;
    font-size: 10px;
}

.matrix-table th {
    color: var(--text-dim);
    font-weight: 600;
    padding: 6px 3px;
    text-align: center;
    border-bottom: 1px solid var(--panel-border);
    letter-spacing: 0.4px;
}

.matrix-table tbody th {
    text-align: left;
    white-space: nowrap;
}

.matrix-table td {
    padding: 2px;
    text-align: center;
}

.matrix-table thead .state-chip {
    margin-right: 3px;
}

.state-chip {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 3px;
    margin-right: 6px;
    vertical-align: middle;
}

.matrix-input {
    width: 38px;
    background-color: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--panel-border);
    color: var(--text);
    padding: 4px 3px;
    text-align: center;
    font-size: 10px;
    font-family: var(--font-mono);
    border-radius: 6px;
    outline: none;
}

.matrix-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 6px var(--accent-soft);
}

/* Hide number-input spinners in the matrix (they crowd the cells) */
.matrix-input::-webkit-outer-spin-button,
.matrix-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.matrix-input {
    -moz-appearance: textfield;
    appearance: textfield;
}

/* ── Zoom cluster ── */
.zoom-controls {
    position: absolute;
    bottom: 18px;
    right: 18px;
    background: var(--panel-bg);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border: 1px solid var(--panel-border);
    border-radius: var(--panel-radius);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
    padding: 10px;
    z-index: 10;
    text-align: center;
}

.zoom-controls button {
    display: block;
    width: 46px;
    height: 30px;
    margin: 4px 0;
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--panel-border);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 13px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
}

.zoom-controls button:hover {
    border-color: var(--accent-soft);
    color: var(--text);
}

.zoom-info {
    color: var(--text-dim);
    font-size: 10px;
    margin-top: 7px;
}

.zoom-hints {
    font-size: 9px;
    margin-top: 6px;
    color: var(--text-faint);
    line-height: 1.5;
}

/* ── Auto mode ── */
#autoModePanel {
    position: fixed;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 10px;
}

.auto-mode-button {
    padding: 12px 34px;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.12), rgba(167, 139, 250, 0.12));
    border: 1px solid rgba(167, 139, 250, 0.45);
    color: var(--violet);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 999px;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.auto-mode-button:hover {
    border-color: var(--violet);
    box-shadow: 0 0 22px rgba(167, 139, 250, 0.35);
    color: #c4b5fd;
}

.auto-mode-button.active {
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.3), rgba(167, 139, 250, 0.34));
    border-color: #c4b5fd;
    color: #ede9fe;
    animation: pulse 2.4s infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 18px rgba(167, 139, 250, 0.45);
    }
    50% {
        box-shadow: 0 0 34px rgba(167, 139, 250, 0.75);
    }
}

/* ── Voyage ── */
.voyage-button {
    padding: 12px 34px;
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.12), rgba(56, 189, 248, 0.12));
    border: 1px solid rgba(45, 212, 191, 0.45);
    color: var(--accent);
    font-family: var(--font-ui);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 999px;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 2.5px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.voyage-button:hover {
    border-color: var(--accent);
    box-shadow: 0 0 22px rgba(45, 212, 191, 0.35);
    color: #99f6e4;
}

.voyage-button.active {
    background: linear-gradient(135deg, rgba(45, 212, 191, 0.32), rgba(56, 189, 248, 0.3));
    border-color: #99f6e4;
    color: #f0fdfa;
    animation: voyage-pulse 2.4s infinite;
}

@keyframes voyage-pulse {
    0%, 100% {
        box-shadow: 0 0 18px rgba(45, 212, 191, 0.45);
    }
    50% {
        box-shadow: 0 0 34px rgba(45, 212, 191, 0.75);
    }
}

/* ── UI visibility toggle ── */
#controlsPanel,
#markovPanel,
#hud,
.zoom-controls,
#autoModePanel,
.learn-button {
    transition: opacity 0.35s ease;
}

body.ui-hidden #controlsPanel,
body.ui-hidden #markovPanel,
body.ui-hidden #hud,
body.ui-hidden .zoom-controls,
body.ui-hidden #autoModePanel,
body.ui-hidden .learn-button {
    opacity: 0;
    pointer-events: none;
}

.ui-toggle-button {
    padding: 10px 22px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: all 0.25s;
}

.ui-toggle-button:hover {
    border-color: var(--accent-soft);
    color: var(--text);
    box-shadow: 0 0 16px rgba(45, 212, 191, 0.2);
}

/* The toggle itself stays reachable when the UI is hidden — just dimmed */
body.ui-hidden .ui-toggle-button {
    opacity: 0.42;
    color: var(--accent);
    border-color: rgba(45, 212, 191, 0.32);
    background: rgba(15, 23, 42, 0.42);
    box-shadow: 0 0 22px rgba(45, 212, 191, 0.12);
    text-transform: none;
    letter-spacing: 0.14em;
}

body.ui-hidden .ui-toggle-button:hover {
    opacity: 1;
    color: #f0fdfa;
    border-color: rgba(45, 212, 191, 0.7);
    box-shadow: 0 0 28px rgba(45, 212, 191, 0.28);
}

/* ── Learn ── */
#learnPanel {
    position: fixed;
    bottom: 18px;
    left: 18px;
    z-index: 10;
    display: flex;
    gap: 10px;
}

.learn-button {
    display: inline-block;
    padding: 10px 22px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--accent);
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border-radius: 999px;
    text-decoration: none;
    transition: all 0.25s;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.learn-button:hover {
    border-color: var(--accent-soft);
    box-shadow: 0 0 16px rgba(45, 212, 191, 0.25);
    transform: translateY(-1px);
}