@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&display=swap");

:root {
    --ui-font: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
    --ui-bg: rgba(246, 248, 250, 0.9);
    --ui-bg-strong: rgba(255, 255, 255, 0.95);
    --ui-border: rgba(110, 126, 143, 0.35);
    --ui-text: #1b2733;
    --ui-text-muted: #607181;
    --ui-accent: #021110;
    --ui-accent-soft: #d6f5f1;
    --ui-shadow: 0 12px 30px rgba(24, 42, 56, 0.16);
}

body {
    margin: 0;
    overflow: hidden;
    font-family: var(--ui-font);
    color: var(--ui-text);
}

#ui-root {
    position: fixed;
    top: 14px;
    left: 14px;
    z-index: 1000;
    display: grid;
    gap: 12px;
    width: min(320px, calc(100vw - 28px));
    max-height: calc(100vh - 28px);
    overflow: auto;
}

.ui-panel {
    background: linear-gradient(180deg, var(--ui-bg-strong), var(--ui-bg));
    border: 1px solid var(--ui-border);
    border-radius: 12px;
    padding: 12px;
    box-shadow: var(--ui-shadow);
    backdrop-filter: blur(6px);
}

.ui-panel h3 {
    margin: 0 0 10px 0;
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--ui-text-muted);
}

.ui-slider {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 10px;
}

.ui-slider label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--ui-text);
}

.ui-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.ui-toggle-label {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.01em;
    color: var(--ui-text);
}

.ui-toggle-input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--ui-accent);
    flex: 0 0 auto;
}

.ui-select {
    border: 1px solid var(--ui-border);
    border-radius: 7px;
    background: #ffffff;
    color: var(--ui-text);
    font-size: 12px;
    font-family: var(--ui-font);
    padding: 4px 8px;
}

.ui-select:focus-visible {
    outline: 2px solid rgba(15, 118, 110, 0.35);
    outline-offset: 1px;
}

.ui-control-row {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 8px;
}

.ui-control-row input[type="range"] {
    width: 100%;
    accent-color: var(--ui-accent);
}

.ui-readout {
    min-width: 52px;
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    color: var(--ui-text-muted);
}

.ui-play-button {
    padding: 4px 9px;
    border: 1px solid rgba(15, 118, 110, 0.35);
    border-radius: 7px;
    background: #ffffff;
    color: var(--ui-accent);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

.ui-play-button:hover {
    background: var(--ui-accent-soft);
}

.ui-play-button:focus-visible,
.ui-mesh-button:focus-visible {
    outline: 2px solid rgba(15, 118, 110, 0.35);
    outline-offset: 2px;
}

.ui-mesh-button {
    display: block;
    width: 100%;
    margin-bottom: 6px;
    padding: 8px 9px;
    border: 1px solid var(--ui-border);
    border-radius: 8px;
    background: #ffffff;
    color: var(--ui-text);
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 120ms ease, border-color 120ms ease;
}

.ui-mesh-button:hover {
    border-color: rgba(15, 118, 110, 0.5);
}

.ui-mesh-button.is-selected {
    background: var(--ui-accent-soft);
    border-color: rgba(80, 80, 80, 0.55);
}

@media (max-width: 680px) {
    #ui-root {
        left: 10px;
        top: 10px;
        width: min(360px, calc(100vw - 20px));
        max-height: calc(100vh - 20px);
    }

    .ui-panel {
        padding: 10px;
        border-radius: 10px;
    }
}