.gpc-constructor-page {
    padding: 2rem 0 5rem;
    background: var(--gpc-bg);
}

.gpc-constructor-breadcrumbs {
    display: flex;
    gap: 0.55rem;
    color: var(--gpc-muted);
    font-size: 0.92rem;
}

.gpc-constructor-breadcrumbs a {
    color: inherit;
    text-decoration: none;
}

.gpc-constructor-hero {
    max-width: 760px;
    padding: 3.5rem 0 2.5rem;
}

.gpc-constructor-hero h1 {
    margin: 0;
    font-size: 3.5rem;
    line-height: 1.08;
}

.gpc-constructor-hero > p:last-child {
    max-width: 700px;
    margin: 1rem 0 0;
    color: var(--gpc-muted);
    font-size: 1.08rem;
    line-height: 1.6;
}

.gpc-constructor-layout {
    display: grid;
    align-items: start;
    gap: 1.25rem;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.75fr);
}

.gpc-constructor-workspace,
.gpc-constructor-summary {
    min-width: 0;
    border: 1px solid var(--gpc-border);
    border-radius: 8px;
    background: var(--gpc-surface);
}

.gpc-constructor-workspace {
    padding: clamp(1rem, 3vw, 2rem);
}

.gpc-constructor-summary {
    position: sticky;
    top: 88px;
    padding: 1.35rem;
}

.gpc-constructor-progress {
    display: grid;
    margin-bottom: 1.15rem;
    gap: 0.55rem;
}

.gpc-constructor-progress-track {
    height: 5px;
    overflow: hidden;
    border-radius: 999px;
    background: var(--gpc-surface-raised);
}

.gpc-constructor-progress-fill {
    display: block;
    width: 0;
    height: 100%;
    background: var(--gpc-accent);
    transition: width 180ms ease;
}

.gpc-constructor-progress-label {
    color: var(--gpc-muted);
    font-size: 0.92rem;
    font-weight: 700;
}

.gpc-constructor-live {
    min-height: 1.5rem;
    color: var(--gpc-muted);
    font-size: 0.95rem;
}

.gpc-constructor-step[hidden] {
    display: none;
}

.gpc-constructor-step {
    margin: 0;
    padding: 0;
    border: 0;
}

.gpc-constructor-step legend {
    margin-bottom: 0.85rem;
    color: var(--gpc-text);
    font-size: 1.45rem;
    font-weight: 800;
}

.gpc-constructor-step-caption {
    margin: -0.35rem 0 1rem;
    color: var(--gpc-muted);
}

.gpc-constructor-option-list {
    display: grid;
    gap: 0.55rem;
}

.gpc-constructor-option {
    display: grid;
    min-height: 58px;
    padding: 0.75rem 0.85rem;
    align-items: center;
    gap: 0.8rem;
    grid-template-columns: 22px minmax(0, 1fr) auto;
    border: 1px solid var(--gpc-border);
    border-radius: 6px;
    background: var(--gpc-surface-raised);
    cursor: pointer;
}

.gpc-constructor-option:hover {
    border-color: var(--gpc-secondary);
}

.gpc-constructor-option:has(input:checked) {
    border-color: var(--gpc-accent);
    background: rgba(251, 97, 57, 0.13);
    box-shadow: inset 0 0 0 1px var(--gpc-accent);
}

.gpc-constructor-option input {
    width: 20px;
    height: 20px;
    margin: 0;
    accent-color: var(--gpc-accent);
}

.gpc-constructor-option-title {
    min-width: 0;
    overflow-wrap: anywhere;
}

.gpc-constructor-option-price {
    color: var(--gpc-muted);
    font-size: 0.9rem;
    text-align: right;
    white-space: nowrap;
}

.gpc-constructor-option.is-unavailable {
    opacity: 0.45;
}

.gpc-constructor-actions {
    display: flex;
    margin-top: 1.5rem;
    justify-content: space-between;
    gap: 0.75rem;
}

.gpc-constructor-actions .gpc-button,
.gpc-constructor-add,
.gpc-constructor-load,
.gpc-constructor-save {
    min-height: 44px;
}

.gpc-constructor-summary h2 {
    margin: 0;
    font-size: 1.55rem;
    line-height: 1.2;
}

.gpc-constructor-summary-copy {
    margin: 0.75rem 0 0;
    color: var(--gpc-muted);
    line-height: 1.5;
}

.gpc-constructor-total-row {
    display: flex;
    margin-top: 1.35rem;
    padding-top: 1.15rem;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    border-top: 1px solid var(--gpc-border);
    color: var(--gpc-muted);
}

.gpc-constructor-total-row output {
    color: var(--gpc-text);
    font-size: 1.7rem;
    font-weight: 850;
    white-space: nowrap;
}

.gpc-constructor-composition {
    display: grid;
    margin: 1.25rem 0 0;
    gap: 0.55rem 0.8rem;
    grid-template-columns: minmax(90px, 0.55fr) minmax(0, 1.45fr);
}

.gpc-constructor-composition dt {
    color: var(--gpc-muted);
    font-size: 0.88rem;
}

.gpc-constructor-composition dd {
    min-width: 0;
    margin: 0;
    color: var(--gpc-text);
    font-size: 0.92rem;
    font-weight: 700;
    overflow-wrap: anywhere;
}

.gpc-constructor-save-row {
    display: grid;
    margin-top: 1.25rem;
    padding-top: 1rem;
    align-items: center;
    gap: 0.65rem;
    border-top: 1px solid var(--gpc-border);
}

.gpc-constructor-save-row span {
    min-height: 1.4rem;
    color: var(--gpc-muted);
    font-size: 0.88rem;
}

.gpc-constructor-add,
.gpc-constructor-load {
    width: 100%;
    margin-top: 0.85rem;
}

.gpc-constructor-issues {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border: 1px solid rgba(255, 93, 116, 0.5);
    border-radius: 6px;
    background: rgba(255, 93, 116, 0.08);
}

.gpc-constructor-issues ul {
    margin: 0.45rem 0 0;
    padding-left: 1.2rem;
}

.gpc-constructor-unavailable {
    max-width: 760px;
    padding: 2rem;
}

@media (max-width: 900px) {
    .gpc-constructor-layout {
        grid-template-columns: 1fr;
    }

    .gpc-constructor-summary {
        position: static;
    }
}

@media (max-width: 620px) {
    .gpc-constructor-page {
        padding-top: 1.25rem;
    }

    .gpc-constructor-hero {
        padding: 2.5rem 0 1.75rem;
    }

    .gpc-constructor-hero h1 {
        font-size: 2.45rem;
    }

    .gpc-constructor-option {
        grid-template-columns: 22px minmax(0, 1fr);
    }

    .gpc-constructor-option-price {
        grid-column: 2;
        text-align: left;
    }

    .gpc-constructor-composition {
        grid-template-columns: 1fr;
    }

    .gpc-constructor-composition dd {
        margin-bottom: 0.35rem;
    }
}