[hidden] {
    display: none !important;
}

:root {
    --bg: #FAFAF8;
    --surface: #F2F0EB;
    --text: #1A1A1A;
    --muted: #5A5A52;
    --border: #D4CFC4;
    --accent: #2D5A3D;
    --anode: #B4472F;
    --cathode: #2D5A8B;
}

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

html,
body {
    height: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.app {
    display: grid;
    grid-template-columns: 340px 1fr;
    height: 100%;
}

aside {
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 26px 24px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

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

.brand a {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 600;
    font-size: 1.3rem;
    letter-spacing: 0.08em;
    color: var(--text);
    text-decoration: none;
}

.brand span {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
}

h1 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 500;
    font-size: 1.9rem;
    line-height: 1.12;
}

.lede {
    color: var(--muted);
    margin-top: 8px;
}

.group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.label {
    font-size: 0.66rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
}

select,
input[type="number"] {
    font: inherit;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: #fff;
    color: var(--text);
    width: 100%;
}

input[type="number"] {
    width: 74px;
}

input[type="number"]:disabled {
    background: var(--surface);
    color: var(--muted);
}

.segmented {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.segmented input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.segmented label {
    flex: 1;
    text-align: center;
    padding: 8px 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--muted);
    cursor: pointer;
    border-right: 1px solid var(--border);
    transition: background 0.2s, color 0.2s;
}

.segmented label:last-of-type {
    border-right: none;
}

.segmented input:checked + label {
    background: var(--accent);
    color: #fff;
}

.segmented.tool input[value="anode"]:checked + label {
    background: var(--anode);
    color: #fff;
}

.segmented.tool input[value="cathode"]:checked + label {
    background: var(--cathode);
    color: #fff;
}

.row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.row label {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--muted);
    white-space: nowrap;
}

.hint {
    font-size: 0.8rem;
    color: var(--muted);
}

button {
    font: inherit;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}

button:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.montage {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    padding: 10px 12px;
    background: var(--surface);
    border-radius: 4px;
    word-break: break-word;
}

.scale-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--muted);
}

#colorbar {
    flex: 1;
    height: 10px;
    border-radius: 2px;
    border: 1px solid var(--border);
}

.stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
}

.stat {
    background: var(--bg);
    padding: 10px 12px;
}

.stat.wide {
    grid-column: span 2;
}

.stat dt {
    font-size: 0.7rem;
    color: var(--muted);
}

.stat dd {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
    margin-top: 2px;
}

.meta {
    font-size: 0.75rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.warning {
    font-size: 0.8rem;
    padding: 10px 12px;
    border-left: 3px solid var(--anode);
    background: #FBEEE9;
}

footer {
    margin-top: auto;
    font-size: 0.75rem;
    color: var(--muted);
}

main {
    position: relative;
    min-height: 0;
    background: var(--surface);
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: grab;
}

#tooltip {
    position: absolute;
    pointer-events: none;
    background: rgba(26, 26, 26, 0.88);
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    padding: 4px 8px;
    border-radius: 3px;
}

#loading {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    padding: 24px;
    text-align: center;
    color: var(--muted);
}

@media (max-width: 860px) {
    .app {
        grid-template-columns: 1fr;
        height: auto;
    }

    aside {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    main {
        height: 70vh;
    }
}

.help {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 14px;
    height: 14px;
    margin-left: 6px;
    border: 1px solid var(--border);
    border-radius: 50%;
    font-family: 'Inter', sans-serif;
    font-size: 0.6rem;
    font-weight: 600;
    color: var(--muted);
    cursor: help;
    position: relative;
    flex: none;
}

.help:hover {
    border-color: var(--accent);
    color: var(--accent);
}

#help-tip {
    position: fixed;
    max-width: 260px;
    padding: 10px 12px;
    background: #1A1A1A;
    color: #F2F0EB;
    border-radius: 4px;
    font-family: 'Inter', sans-serif;
    font-size: 0.74rem;
    font-weight: 400;
    line-height: 1.5;
    letter-spacing: 0;
    text-transform: none;
    text-align: left;
    z-index: 50;
    pointer-events: none;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
}

#help-tip[hidden] {
    display: none;
}

.views {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
}

.views button {
    padding: 7px 4px;
    font-size: 0.78rem;
}

.views button.active {
    border-color: var(--accent);
    color: var(--accent);
}

.wide-button {
    width: 100%;
    text-align: center;
}

#orientation {
    position: absolute;
    left: 20px;
    bottom: 18px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    pointer-events: none;
}

#hover-value {
    font-variant-numeric: tabular-nums;
}

#hud {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 14px 20px 16px;
    background: linear-gradient(to top, rgba(250, 250, 248, 0.96), rgba(250, 250, 248, 0.82) 70%, rgba(250, 250, 248, 0));
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    pointer-events: none;
}

#hud[hidden] {
    display: none;
}

.hud-block {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.hud-block:first-child {
    min-width: 0;
    flex: 1;
}

.hud-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.86rem;
    color: var(--text);
    letter-spacing: 0.02em;
}

.hud-sub {
    font-size: 0.74rem;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.hud-scale {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--muted);
}

#hud-bar {
    width: 190px;
    height: 9px;
    border: 1px solid var(--border);
    border-radius: 2px;
}

#cursor-chip {
    position: absolute;
    pointer-events: none;
    background: rgba(26, 26, 26, 0.9);
    color: #fff;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    line-height: 1.5;
    padding: 5px 9px;
    border-radius: 3px;
    white-space: pre;
}

#cursor-chip[hidden] {
    display: none;
}

.footer-links {
    display: block;
    margin-top: 10px;
}

.footer-links a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid rgba(45, 90, 61, 0.35);
}

.footer-links a:hover {
    border-bottom-color: var(--accent);
}