:root {
    color-scheme: dark;
    font-family: Inter, ui-sans-serif, system-ui, sans-serif;
    background: #111318;
    color: #f5f7fb;
}

* {
    box-sizing: border-box;
}

html,
body,
#viewer,
#canvas-container {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

#viewer {
    position: relative;
    min-height: 320px;
    background:
        radial-gradient(circle at 50% 15%, #252a35 0, #111318 55%);
}

#canvas-container canvas {
    display: block;
    width: 100%;
    height: 100%;
    touch-action: none;
}

#status,
#error {
    position: absolute;
    inset: 50% auto auto 50%;
    max-width: min(30rem, calc(100% - 2rem));
    padding: 0.7rem 0.9rem;
    border: 1px solid #3a4150;
    border-radius: 8px;
    background: rgb(17 19 24 / 90%);
    box-shadow: 0 8px 30px rgb(0 0 0 / 35%);
    transform: translate(-50%, -50%);
    text-align: center;
}

#error {
    border-color: #b64c5c;
    color: #ffd7dc;
}

.toolbar {
    position: absolute;
    inset: auto 0.65rem 0.65rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid rgb(255 255 255 / 12%);
    border-radius: 10px;
    background: rgb(17 19 24 / 88%);
    box-shadow: 0 8px 30px rgb(0 0 0 / 30%);
    backdrop-filter: blur(10px);
}

.toolbar label {
    display: flex;
    gap: 0.35rem;
    align-items: center;
    color: #c9cfda;
    font-size: 0.75rem;
}

.range-control {
    flex: 1 1 11rem;
}

.range-control input {
    min-width: 5rem;
    flex: 1;
}

.range-control output {
    width: 2.8rem;
    color: #f5f7fb;
    font-variant-numeric: tabular-nums;
}

.checkbox {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

button,
select {
    min-height: 2rem;
    padding: 0.35rem 0.55rem;
    border: 1px solid #454d5d;
    border-radius: 6px;
    background: #242a35;
    color: inherit;
    font: inherit;
}

button {
    cursor: pointer;
}

button:hover:not(:disabled) {
    border-color: #6b8cff;
    background: #30394a;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
    outline: 2px solid #7d9aff;
    outline-offset: 2px;
}

button:disabled,
select:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}