.page {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

.workspace {
    display: grid;
    gap: 14px;
    grid-template-columns: minmax(0, 1fr);
    justify-content: center;
    justify-items: center;
}

.heading {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
}

.doc-link {
    text-decoration: none;
    color: var(--accent);
    font-weight: 700;
    font-size: 0.92rem;
    letter-spacing: 0.02em;
    border-radius: 999px;
    border: 1px solid var(--accent-soft);
    background: var(--bg-elev);
    padding: 10px 14px;
    transition: transform 130ms ease, border-color 130ms ease, color 130ms ease;
    white-space: nowrap;
}

.doc-link:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.doc-link-arrow {
    margin-left: 4px;
    font-weight: 700;
}

.panel {
    background: var(--bg-elev);
    border: 1px solid var(--accent-soft);
    border-radius: 28px;
    padding: 18px;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(12px);
    display: grid;
    gap: 12px;
    grid-template-columns: minmax(0, 1fr);
}

.display-panel {
    width: min(100%, 1040px);
    justify-self: center;
}

.display-area {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    align-items: start;
}

.viz-frame {
    border-radius: 22px;
    overflow: hidden;
}

#canvas-container {
    width: 100%;
}

#canvas-container canvas {
    display: block;
    width: 100%;
    height: auto;
}

.bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.regen {
    background: var(--accent);
    animation: background 1.2s ease;
    color: #fff;
    border-color: transparent;
    padding-inline: 18px;
}

.countdown {
    font-weight: 600;
    color: var(--muted);
    font-size: 0.88rem;
}

.config-toggle {
    padding: 6px 12px;
    font-size: 0.85rem;
}

.config-panel {
    display: none;
    width: min(100%, 330px);
    align-self: start;
    gap: 14px;
}

.config-panel.open {
    display: grid;
}

.config-actions {
    margin-top: 4px;
}

.reset-settings {
    width: 100%;
    border-radius: 12px;
    padding: 9px 12px;
    font-size: 0.85rem;
}

.config-section {
    margin-bottom: 14px;
}

.config-section:last-child {
    margin-bottom: 0;
}

.config-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text);
}

.config-label-value {
    color: var(--muted);
    font-size: 0.85rem;
    margin-left: 8px;
}

input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--accent-soft);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: transform 130ms ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
    transition: transform 130ms ease;
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.config-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.config-range-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.config-select {
    width: 100%;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--accent-soft);
    background: var(--bg-elev);
    color: var(--text);
    font: inherit;
}

.config-select option {
    color: #111;
}

.config-option {
    display: flex;
    align-items: center;
    gap: 6px;
}

.config-option input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

.config-option label {
    cursor: pointer;
    font-size: 0.9rem;
}

.config-range-grid label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.config-range-grid input[type="number"] {
    width: 100%;
    height: auto;
    padding: 8px 10px;
    border-radius: 10px;
    border: 1px solid var(--accent-soft);
    background: var(--bg-elev);
    color: var(--text);
    font: inherit;
    cursor: text;
    appearance: textfield;
    -moz-appearance: textfield;
}

.config-range-grid input[type="number"]::-webkit-outer-spin-button,
.config-range-grid input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.config-help {
    margin-top: 8px;
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.4;
}

@media (max-width: 800px) {
    body {
        padding: 16px;
    }

    .topbar {
        flex-wrap: wrap;
    }

    .actions {
        width: 100%;
        justify-content: space-between;
    }

    .meta,
    .bottom {
        align-items: flex-start;
        flex-direction: column;
    }

    .config-panel.open {
        width: 100%;
    }

    .config-options {
        grid-template-columns: 1fr;
    }
}

@media (min-width: 1380px) {
    .workspace.with-config {
        grid-template-columns: 1040px 330px;
        align-items: start;
        justify-content: center;
        justify-items: stretch;
    }

    .workspace.with-config .display-panel {
        justify-self: stretch;
    }
}

.font-mono {
    font-family: 'SF Mono', SF Mono, SF Mono Regular, Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}