/* ========== 像素涌流：原版布局 + 全站配色 ========== */

.pixelflow-page .main-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    grid-template-areas:
        "left canvas"
        "left params";
    gap: 20px;
    width: 100%;
    max-width: 1400px;
    margin: 0 auto 28px;
    align-items: start;
}

.pixelflow-page .left-panel {
    grid-area: left;
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 220px;
}

.pixelflow-page .upload-panel {
    background: var(--color-card);
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    border: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: var(--shadow-card-float);
}

.pixelflow-page .upload-panel h3 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-theme-ink);
    letter-spacing: 0;
    align-self: stretch;
    text-align: left;
}

.pixelflow-page .upload-zone {
    width: 100%;
    aspect-ratio: 1;
    border: 2px dashed var(--line-hard);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    overflow: hidden;
    background: var(--color-surface-dim);
}

.pixelflow-page .upload-zone:hover {
    border-color: var(--color-ink);
    background: var(--color-theme-wash);
}

.pixelflow-page .upload-zone.has-image {
    border-style: solid;
    border-color: var(--line-ins);
}

.pixelflow-page .upload-zone img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

.pixelflow-page .upload-zone .placeholder {
    text-align: center;
    color: #5a6c7d;
    pointer-events: none;
}

.pixelflow-page .upload-zone .placeholder span {
    font-size: 0.8rem;
}

.pixelflow-page .upload-panel label.file-btn {
    display: inline-block;
    padding: 7px 18px;
    background: var(--color-card);
    color: var(--color-ink) !important;
    border: 1px solid var(--line-hard);
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.2s, border-color 0.2s;
}

.pixelflow-page .upload-panel label.file-btn:hover {
    background: rgba(0, 0, 0, 0.04);
    border-color: var(--color-ink);
}

.pixelflow-page .upload-panel input[type="file"] {
    display: none;
}

.pixelflow-page .upload-panel .info {
    font-size: 0.7rem;
    color: #5a6c7d;
    text-align: center;
}

.pixelflow-page .canvas-panel {
    grid-area: canvas;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    min-width: 0;
}

.pixelflow-page .canvas-wrapper {
    background: #0a0a0a;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.12);
    line-height: 0;
    box-shadow: var(--shadow-ins);
    width: fit-content;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.pixelflow-page .canvas-wrapper.is-empty {
    background: var(--color-surface-dim);
    border: 2px dashed var(--line-hard);
    box-shadow: none;
    aspect-ratio: 1;
    max-width: 100%;
    box-sizing: border-box;
    display: grid;
    place-items: center;
    padding: 20px;
    line-height: normal;
}

.pixelflow-page .canvas-wrapper.is-empty canvas#mainCanvas {
    display: none !important;
}

.pixelflow-page .canvas-empty {
    margin: 0;
    padding: 0;
    width: auto;
    max-width: calc(100% - 8px);
    text-align: center;
    text-wrap: balance;
    font-size: 0.9rem;
    line-height: 1.55;
    color: #5a6c7d;
}

.pixelflow-page canvas#mainCanvas {
    display: block;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
}

.pixelflow-page canvas#mainCanvas[hidden] {
    display: none !important;
}

.pixelflow-page .status {
    text-align: center;
    font-size: 0.82rem;
    color: #5a6c7d;
    min-height: 20px;
    transition: color 0.2s;
}

.pixelflow-page .status.ready {
    color: var(--color-theme-ink);
    font-weight: 600;
}

.pixelflow-page .status.animating {
    color: var(--color-ink-muted);
}

.pixelflow-page .params-panel {
    grid-area: params;
    background: var(--color-card);
    border: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: var(--shadow-card-float);
    padding: 16px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: flex-end;
    justify-content: center;
    align-self: start;
}

.pixelflow-page .controls-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 14px 20px;
    width: 100%;
    background: var(--color-card);
    border: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: var(--shadow-card-float);
}

.pixelflow-page .controls-action-row {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.pixelflow-page .control-group {
    display: flex;
    flex-direction: column;
    gap: 3px;
    align-items: center;
}

.pixelflow-page .control-group label {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--color-theme-ink);
    letter-spacing: 0.02em;
}

.pixelflow-page .control-group select,
.pixelflow-page .control-group input[type="range"] {
    background: var(--color-card);
    border: 1px solid var(--line-hard);
    color: var(--color-ink);
    padding: 5px 8px;
    font-size: 0.85rem;
    font-family: inherit;
    cursor: pointer;
}

.pixelflow-page .control-group select {
    min-width: 100px;
}

.pixelflow-page .control-group input[type="range"] {
    width: 90px;
    appearance: none;
    height: 5px;
    background: var(--color-surface-dim);
    outline: none;
    cursor: pointer;
    padding: 0;
}

.pixelflow-page .control-group input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--color-theme);
    border: 1px solid var(--color-ink);
    border-radius: 50%;
    cursor: pointer;
}

.pixelflow-page .control-group .range-value {
    font-size: 0.75rem;
    color: #5a6c7d;
}

.pixelflow-page .range-number {
    width: 56px;
    background: var(--color-card);
    border: 1px solid var(--line-hard);
    color: var(--color-ink);
    text-align: center;
    padding: 2px 4px;
    font-family: inherit;
    font-size: 0.85rem;
    -moz-appearance: textfield;
    cursor: text;
}

.pixelflow-page .range-number::-webkit-inner-spin-button,
.pixelflow-page .range-number::-webkit-outer-spin-button {
    -webkit-appearance: none;
}

.pixelflow-page .range-number:focus {
    outline: none;
    border-color: var(--color-ink);
}

.pixelflow-page .res-warn {
    font-size: 0.65rem;
    color: #b45309;
    min-height: 10px;
}

.pixelflow-page .btn {
    padding: 10px 24px;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.2s, background 0.2s, color 0.2s, border-color 0.2s;
}

.pixelflow-page .btn:active {
    transform: scale(0.97);
}

.pixelflow-page .btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pixelflow-page .btn-transform {
    background: var(--gradient-theme);
    color: var(--color-theme-ink) !important;
    font-size: 1rem;
    padding: 12px 32px;
    box-shadow: var(--shadow-theme);
}

.pixelflow-page .btn-transform:hover:not(:disabled) {
    background: var(--gradient-theme-reverse);
    box-shadow: var(--shadow-theme-hover);
}

.pixelflow-page .btn-reset {
    background: var(--color-card);
    color: var(--color-ink) !important;
    border: 1px solid var(--line-hard);
}

.pixelflow-page .btn-reset:hover:not(:disabled) {
    background: rgba(0, 0, 0, 0.04);
    border-color: var(--color-ink);
}

.pixelflow-page .btn-toggle {
    background: var(--color-card);
    color: #5a6c7d;
    border: 1px solid var(--line-hard);
    padding: 7px 14px;
    font-size: 0.8rem;
    font-weight: 500;
    white-space: nowrap;
}

.pixelflow-page .btn-toggle:hover:not(:disabled) {
    border-color: var(--color-ink);
    color: var(--color-ink);
}

.pixelflow-page .btn-toggle.active {
    background: var(--color-theme-wash);
    color: var(--color-theme-ink);
    border-color: var(--color-ink);
    font-weight: 600;
}

.pixelflow-page .progress-bar-wrap {
    width: 100%;
    max-width: 400px;
    height: 4px;
    background: var(--color-surface-dim);
    border: 1px solid var(--line-ins);
    overflow: hidden;
}

.pixelflow-page .progress-bar {
    height: 100%;
    width: 0%;
    background: var(--color-theme);
    transition: width 0.05s linear;
}

.pixelflow-page .btn-download {
    background: var(--color-card);
    color: var(--color-ink) !important;
    border: 1px solid var(--line-hard);
}

.pixelflow-page .btn-download:hover:not(:disabled) {
    background: rgba(0, 0, 0, 0.04);
    border-color: var(--color-ink);
}

@media (min-width: 1200px) {
    .pixelflow-page .main-layout {
        grid-template-columns: 220px 1fr 240px;
        grid-template-areas: "left canvas params";
    }

    .pixelflow-page .params-panel {
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: stretch;
        justify-content: flex-start;
        gap: 14px;
    }

    .pixelflow-page .params-panel .control-group {
        align-items: stretch;
    }

    .pixelflow-page .params-panel .control-group label {
        text-align: left;
    }

    .pixelflow-page .params-panel .control-group select,
    .pixelflow-page .params-panel .control-group input[type="range"] {
        width: 100%;
        min-width: unset;
    }

    .pixelflow-page .params-panel .btn-toggle {
        width: 100%;
    }

    .pixelflow-page .params-panel #trailStrengthGroup {
        width: 100%;
    }
}

@media (max-width: 850px) {
    .pixelflow-page .main-layout {
        grid-template-columns: 1fr;
        grid-template-areas: "left" "canvas" "params";
        gap: 10px;
    }

    .pixelflow-page .left-panel {
        flex-direction: row;
        width: 100%;
        max-width: 500px;
        gap: 8px;
    }

    .pixelflow-page .upload-panel {
        flex: 1;
        padding: 10px;
        gap: 6px;
    }

    .pixelflow-page .upload-panel h3 {
        font-size: 0.75rem;
    }

    .pixelflow-page .left-panel .upload-zone {
        aspect-ratio: unset;
        height: 80px;
    }

    .pixelflow-page .upload-panel label.file-btn {
        font-size: 0.75rem;
        padding: 5px 12px;
    }

    .pixelflow-page .upload-panel .info {
        font-size: 0.65rem;
    }

    .pixelflow-page .canvas-panel {
        width: 100%;
        gap: 8px;
    }

    .pixelflow-page .params-panel {
        padding: 10px 12px;
        gap: 8px;
    }

    .pixelflow-page .controls-actions {
        padding: 10px 12px;
        gap: 8px;
    }

    .pixelflow-page .btn {
        font-size: 0.78rem;
        padding: 8px 16px;
    }

    .pixelflow-page .btn-transform {
        font-size: 0.9rem;
        padding: 10px 22px;
    }

    .pixelflow-page .btn-toggle {
        font-size: 0.72rem;
        padding: 6px 10px;
    }

    .pixelflow-page .control-group label {
        font-size: 0.65rem;
    }

    .pixelflow-page .control-group select,
    .pixelflow-page .control-group input[type="range"] {
        font-size: 0.75rem;
        padding: 4px 6px;
    }

    .pixelflow-page .control-group select {
        min-width: 80px;
    }

    .pixelflow-page .control-group input[type="range"] {
        width: 70px;
    }

    .pixelflow-page .status {
        font-size: 0.7rem;
        min-height: 16px;
    }
}