/* Reaction–Diffusion Lab landing (/reaction-diffusion)
   Shared controls live in apps.css */

.reaction-diffusion-landing-app {
    display: grid;
    gap: 1rem;
    align-items: start;
}

.filter-landing-stage.reaction-diffusion-landing-stage {
    position: relative;
    display: block;
    width: 100%;
    min-height: 280px;
    aspect-ratio: 4 / 3;
    border-radius: 12px;
    overflow: hidden;
    background:
        radial-gradient(ellipse at 30% 20%, rgba(244, 114, 182, 0.12), transparent 55%),
        radial-gradient(ellipse at 70% 80%, rgba(45, 212, 191, 0.1), transparent 50%),
        #070b12;
    box-shadow: none;
    cursor: crosshair;
    touch-action: none;
}

.reaction-diffusion-landing-canvas,
.reaction-diffusion-landing-overlay {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
}

.reaction-diffusion-landing-overlay {
    pointer-events: none;
}

.reaction-diffusion-file-input {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.reaction-diffusion-hud {
    position: absolute;
    left: 10px;
    bottom: 10px;
    z-index: 2;
    margin: 0;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    background: rgba(7, 11, 18, 0.55);
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.75rem;
    font-variant-numeric: tabular-nums;
    pointer-events: none;
}

.reaction-diffusion-landing-controls {
    display: grid;
    gap: 0.65rem;
}

.reaction-diffusion-landing-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 2px 0 6px;
    width: 100%;
}

.reaction-diffusion-hint {
    margin: 0.15rem 0 0;
    font-size: 0.85rem;
    opacity: 0.78;
}

.reaction-diffusion-fk-wrap {
    display: grid;
    gap: 0.35rem;
}

.reaction-diffusion-fk {
    display: block;
    width: 100%;
    max-width: 280px;
    height: auto;
    aspect-ratio: 3 / 2;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    cursor: crosshair;
    touch-action: none;
    background: #0b1220;
}

.reaction-diffusion-fk-axes {
    display: flex;
    justify-content: space-between;
    max-width: 280px;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    opacity: 0.62;
}

.reaction-diffusion-check-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.1rem 0;
    cursor: pointer;
    font-weight: 600;
}

.reaction-diffusion-check-row input {
    width: 1.05rem;
    height: 1.05rem;
    margin: 0;
}

.reaction-diffusion-action-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
}

.reaction-diffusion-pause-btn,
.reaction-diffusion-action-btn {
    min-height: 2rem;
    padding: 0.25rem 0.75rem;
    border-radius: 8px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.08);
    color: inherit;
    font-weight: 600;
    cursor: pointer;
}

.reaction-diffusion-pause-btn[aria-pressed="true"] {
    background: rgba(94, 234, 212, 0.18);
    border-color: rgba(94, 234, 212, 0.45);
}

.reaction-diffusion-pause-btn:disabled,
.reaction-diffusion-action-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

@media (max-width: 600px) {
    .reaction-diffusion-landing-stage {
        aspect-ratio: 1 / 1;
        min-height: 240px;
    }
}

body.filter-app-mode .reaction-diffusion-landing-app {
    align-items: stretch;
    min-height: 0;
}

body.filter-app-mode .reaction-diffusion-landing-app > .filter-landing-stage,
body.filter-app-mode .filter-landing-stage.reaction-diffusion-landing-stage {
    align-self: stretch;
    height: 100%;
    max-height: none;
    min-height: 0;
    aspect-ratio: auto;
}