.text-muted {
    margin: 0;
}

.furniture3d {
    --card-bg: #ffffff;
    --border: #dde3ea;
    --accent: #1f6b84;
    --accent-soft: #e8f4f8;
    padding: 0.5rem;
    border: 1px solid #e3e8ef;
    border-radius: 18px;
    background: linear-gradient(145deg, #fcfdff, #f2f6fa);
}

.sofa-back-btn {
    width: 100%;
    margin-bottom: 0.75rem;
}

.sofa-back-btn i {
    margin-right: 0.4rem;
}

.sofa-stage-header {
    margin-bottom: 0.75rem;
}

.sofa-stage-header h3 {
    margin: 0 0 0.25rem;
    font-size: 1.3rem;
    font-weight: 700;
    color: #1f2a37;
}

.sofa-stage-header p {
    margin: 0;
    color: #506072;
    font-size: 0.92rem;
}

.sofa-stage-actions {
    display: flex;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.sofa-stage-actions .btn {
    border-radius: 999px;
    font-weight: 600;
}

.sofa-view-switch {
    display: flex;
    gap: 0.45rem;
    margin-bottom: 0.75rem;
}

.sofa-view-btn {
    flex: 1;
    border: 1px solid var(--border);
    background: #fff;
    color: #304354;
    border-radius: 999px;
    font-weight: 700;
    font-size: 0.78rem;
    padding: 0.45rem 0.7rem;
}

.sofa-view-btn.is-active {
    border-color: var(--accent);
    background: var(--accent-soft);
    color: #15435a;
}

.sofa-2d-stage {
    display: none;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 0.7rem;
    background: #f7fafc;
    margin-bottom: 0.75rem;
}

.sofa-2d-stage.is-active {
    display: block;
}

.sofa2d-canvas {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: #eef2f6;
    min-height: 300px;
}

.sofa2d-base {
    width: 100%;
    display: block;
    max-height: 460px;
    object-fit: contain;
    margin: 0 auto;
}

.sofa2d-seat-layer,
.sofa2d-pillow-layer,
.sofa2d-shade {
    position: absolute;
    inset: 0;
}

.sofa2d-seat-layer,
.sofa2d-pillow-layer {
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    opacity: 0.9;
}

.sofa2d-seat-layer {
    clip-path: polygon(9% 63%, 20% 42%, 80% 42%, 91% 63%, 88% 80%, 12% 80%);
}

.sofa2d-pillow-layer {
    clip-path: polygon(13% 33%, 26% 18%, 74% 18%, 87% 33%, 83% 47%, 17% 47%);
    opacity: 0.87;
}

.sofa2d-shade {
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(0,0,0,0.15));
    mix-blend-mode: multiply;
    pointer-events: none;
}

.sofa-2d-note {
    margin: 0.5rem 0 0;
    font-size: 0.76rem;
    color: #4e6275;
}

#model__container {
    position: relative;
    height: 72vh;
    min-height: 480px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: radial-gradient(circle at 30% 25%, #ffffff, #eef2f5);
    overflow: hidden;
}

.furniture3d.mode-2d #model__container {
    display: none;
}

.furniture3d.mode-3d .sofa-2d-stage {
    display: none;
}

.furniture3d.mode-3d #model__container {
    display: block;
}

#model__container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    touch-action: pan-y;
}

.model-hint {
    margin: 0;
    padding: 0.65rem 0.8rem;
    text-align: center;
    color: #4d5e6f;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 255, 255, 0.72));
}

.sofa-render-status {
    position: absolute;
    left: 0.65rem;
    bottom: 0.65rem;
    padding: 0.35rem 0.65rem;
    background: rgba(13, 23, 38, 0.74);
    color: #f6f9fc;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.sofa-render-status.is-hidden {
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
}

.model__fallback {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    text-align: center;
    color: #2b3948;
    font-weight: 600;
}

.fabric__container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.sofa-tabs {
    display: flex;
    gap: 0.45rem;
}

.sofa-tab {
    flex: 1;
    border: 1px solid var(--border);
    background: #fff;
    color: #304354;
    font-weight: 700;
    font-size: 0.8rem;
    border-radius: 999px;
    padding: 0.5rem 0.75rem;
}

.sofa-tab.is-active {
    background: var(--accent-soft);
    border-color: var(--accent);
    color: #14455b;
}

.sofa-tab-panel[data-panel="legs"] {
    display: none;
}

.sofa-tab-mode-legs .sofa-tab-panel[data-panel="fabric"] {
    display: none;
}

.sofa-tab-mode-legs .sofa-tab-panel[data-panel="legs"] {
    display: block;
}

.sofa-control-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 0.65rem;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

.sofa-control-card p {
    margin: 0 0 0.6rem;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    color: #2f4152;
}

.overcollor {
    row-gap: 0.45rem;
}

.pattern__container,
.patternpillow__container,
.finishs_container {
    cursor: pointer;
    margin-bottom: 0;
}

.pattern__container img,
.patternpillow__container img,
.finishs_container img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border: 2px solid transparent;
    border-radius: 10px;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    margin: 0;
}

.pattern__container h4,
.patternpillow__container h4,
.finishs_container h4 {
    margin: 0.35rem 0 0;
    font-size: 0.74rem;
    font-weight: 700;
    line-height: 1.15;
    color: #445669;
    min-height: 1.8em;
    word-break: break-word;
}

.pattern__container.is-active img,
.patternpillow__container.is-active img,
.finishs_container.is-active img {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(31, 107, 132, 0.15);
    transform: translateY(-1px);
}

@media (min-width: 992px) {
    .fabric__container {
        position: sticky;
        top: 92px;
        max-height: calc(100vh - 110px);
        overflow-y: auto;
        padding-right: 0.2rem;
    }
}

@media (max-width: 991.98px) {
    #model__container {
        height: 56vh;
        min-height: 360px;
    }

    .sofa-stage-header h3 {
        font-size: 1.05rem;
    }

    .sofa-control-card {
        padding: 0.55rem;
    }

    .sofa-stage-actions {
        position: sticky;
        top: 70px;
        z-index: 3;
        padding: 0.35rem;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.82);
        backdrop-filter: blur(5px);
    }
}

@media (max-width: 575.98px) {
    #model__container {
        height: 52vh;
        min-height: 320px;
    }

    .sofa-stage-header p {
        font-size: 0.84rem;
    }

    .sofa-control-card p {
        font-size: 0.72rem;
    }

    .pattern__container h4,
    .patternpillow__container h4,
    .finishs_container h4 {
        font-size: 0.66rem;
        min-height: 1.5em;
    }
}