.builder-body {
    padding-top: 72px;
}

.builder-page {
    min-height: calc(100vh - 72px);
}

.builder-hero {
    padding: 56px 20px 100px;
}

.builder-page-head {
    max-width: 720px;
    margin-bottom: 36px;
}

.builder-title {
    font-size: clamp(2rem, 5vw, 2.75rem);
    margin-bottom: 12px;
}

.builder-title::after {
    width: 56px;
}

.builder-lead {
    font-family: system-ui, sans-serif;
    font-size: 1.05rem;
    line-height: 1.55;
    color: var(--text-muted);
    margin: 0;
}

/* Main workspace */
.builder-workspace {
    display: grid;
    grid-template-columns: minmax(280px, 420px) 1fr;
    gap: 32px;
    align-items: start;
    max-width: 1180px;
}

.builder-preview-panel {
    position: sticky;
    top: 96px;
}

.builder-preview-card {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 16px;
    overflow: hidden;
    background:
        linear-gradient(45deg, #e8e8e8 25%, transparent 25%),
        linear-gradient(-45deg, #e8e8e8 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #e8e8e8 75%),
        linear-gradient(-45deg, transparent 75%, #e8e8e8 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
    background-color: #f5f5f5;
    box-shadow:
        0 0 0 3px var(--white),
        0 0 0 5px #111,
        0 24px 48px rgba(0, 0, 0, 0.12);
}

body.dark-mode .builder-preview-card {
    background-color: #1a1a1a;
    background-image:
        linear-gradient(45deg, #252525 25%, transparent 25%),
        linear-gradient(-45deg, #252525 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #252525 75%),
        linear-gradient(-45deg, transparent 75%, #252525 75%);
}

.builder-preview-card canvas,
.builder-compare-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.builder-compare-img {
    z-index: 2;
    background: #f5f5f5;
}

body.dark-mode .builder-compare-img {
    background: #1a1a1a;
}

.builder-placeholder,
.builder-loading {
    position: absolute;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 24px;
    text-align: center;
    font-family: system-ui, sans-serif;
}

.builder-placeholder[hidden],
.builder-loading[hidden],
.builder-preview-card canvas[hidden],
.builder-compare-img[hidden] {
    display: none !important;
}

.builder-placeholder i {
    font-size: 2rem;
    color: var(--cyan);
    opacity: 0.85;
    margin-bottom: 4px;
}

.builder-placeholder p {
    margin: 0;
    font-size: 1rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.builder-placeholder span {
    font-size: 0.85rem;
    color: var(--text-muted);
    max-width: 220px;
}

.builder-loading p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.builder-loading__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-light);
    border-top-color: var(--cyan);
    border-radius: 50%;
    animation: builder-spin 0.7s linear infinite;
}

@keyframes builder-spin {
    to { transform: rotate(360deg); }
}

.builder-workspace[data-state="loading"] .builder-preview-card {
    box-shadow: 0 0 0 3px var(--cyan), 0 24px 48px rgba(0, 0, 0, 0.1);
}

.builder-preview-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-top: 14px;
    padding: 0 4px;
}

.builder-ape-id {
    font-family: 'Winter Selfie', sans-serif;
    font-size: 1.35rem;
    color: var(--text-dark);
    margin: 0;
}

.builder-compare-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: system-ui, sans-serif;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.builder-compare-toggle input {
    accent-color: var(--cyan);
}

.builder-compare-toggle[hidden] {
    display: none !important;
}

/* Editor panel */
.builder-editor.details-card {
    padding: 28px 24px 32px;
    margin: 0;
    min-height: 420px;
}

.builder-load-bar {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.builder-load-field {
    flex: 1;
    min-width: 0;
}

.builder-load-field label {
    display: block;
    font-family: system-ui, sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.builder-load-field input {
    width: 100%;
    padding: 13px 14px;
    border: 2px solid var(--border-light);
    border-radius: 10px;
    font-family: system-ui, sans-serif;
    font-size: 1.05rem;
    background: var(--bg-light);
    color: var(--text-dark);
}

.builder-load-field input:focus {
    outline: none;
    border-color: var(--cyan);
}

.builder-load-btn {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 22px;
    border: none;
    cursor: pointer;
    font-family: 'Winter Selfie', sans-serif;
    white-space: nowrap;
}

.builder-load-btn.is-loading {
    opacity: 0.7;
    pointer-events: none;
}

.builder-status {
    font-family: system-ui, sans-serif;
    font-size: 0.88rem;
    margin: 12px 0 0;
    min-height: 0;
    color: var(--text-muted);
}

.builder-status:empty {
    display: none;
}

.builder-status.is-error {
    color: var(--red);
}

.builder-blocked {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-top: 24px;
    padding: 20px;
    border-radius: 12px;
    border: 2px solid rgba(255, 77, 77, 0.25);
    background: rgba(255, 77, 77, 0.06);
}

.builder-blocked[hidden],
.builder-trait-editor[hidden] {
    display: none !important;
}

.builder-blocked i {
    font-size: 1.5rem;
    color: var(--red);
    margin-top: 2px;
}

.builder-blocked strong {
    display: block;
    font-family: system-ui, sans-serif;
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 4px;
}

.builder-blocked p {
    margin: 0;
    font-family: system-ui, sans-serif;
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.45;
}

/* Trait editor */
.builder-trait-editor {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.builder-editor-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.builder-chip-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border: 2px solid var(--border-light);
    border-radius: 999px;
    background: var(--bg-light);
    color: var(--text-dark);
    font-family: system-ui, sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color 0.15s, color 0.15s;
}

.builder-chip-btn:hover {
    border-color: var(--cyan);
    color: var(--cyan);
}

.builder-trait-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.builder-trait-tab {
    padding: 8px 12px;
    border: 2px solid var(--border-light);
    border-radius: 8px;
    background: var(--bg-light);
    color: var(--text-muted);
    font-family: system-ui, sans-serif;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.builder-trait-tab:hover {
    border-color: var(--cyan);
    color: var(--text-dark);
}

.builder-trait-tab.is-active {
    border-color: var(--cyan);
    background: rgba(23, 191, 230, 0.1);
    color: var(--text-dark);
}

.builder-trait-search-wrap {
    position: relative;
}

.builder-trait-search-wrap i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.85rem;
    color: var(--text-muted);
    pointer-events: none;
}

.builder-trait-search {
    width: 100%;
    padding: 11px 14px 11px 40px;
    border: 2px solid var(--border-light);
    border-radius: 10px;
    font-family: system-ui, sans-serif;
    font-size: 0.92rem;
    background: var(--bg-light);
    color: var(--text-dark);
}

.builder-trait-search:focus {
    outline: none;
    border-color: var(--cyan);
}

.builder-trait-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(88px, 1fr));
    gap: 10px;
    max-height: 340px;
    overflow-y: auto;
    padding: 4px 2px 8px;
    margin: 0 -2px;
    scrollbar-width: thin;
}

.builder-trait-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 8px 6px 10px;
    border: 2px solid var(--border-light);
    border-radius: 10px;
    background: var(--bg-light);
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s, transform 0.12s;
    font-family: system-ui, sans-serif;
}

.builder-trait-tile:hover {
    border-color: var(--cyan);
    transform: translateY(-1px);
}

.builder-trait-tile.is-selected {
    border-color: var(--cyan);
    box-shadow: 0 0 0 2px rgba(23, 191, 230, 0.25);
}

.builder-trait-tile__thumb {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 6px;
    overflow: hidden;
    background:
        linear-gradient(45deg, #ddd 25%, transparent 25%),
        linear-gradient(-45deg, #ddd 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #ddd 75%),
        linear-gradient(-45deg, transparent 75%, #ddd 75%);
    background-size: 10px 10px;
    background-position: 0 0, 0 5px, 5px -5px, -5px 0;
    background-color: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
}

body.dark-mode .builder-trait-tile__thumb {
    background-color: #222;
    background-image:
        linear-gradient(45deg, #333 25%, transparent 25%),
        linear-gradient(-45deg, #333 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #333 75%),
        linear-gradient(-45deg, transparent 75%, #333 75%);
}

.builder-trait-tile__thumb img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.builder-trait-tile--none .builder-trait-tile__thumb {
    color: var(--text-muted);
    font-size: 1.25rem;
}

.builder-trait-tile__label {
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1.2;
    text-align: center;
    color: var(--text-dark);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    width: 100%;
}

.builder-trait-grid__empty {
    grid-column: 1 / -1;
    padding: 32px 16px;
    text-align: center;
    font-family: system-ui, sans-serif;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.builder-download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    margin-top: 4px;
    padding: 16px 24px;
    border: none;
    cursor: pointer;
    font-family: 'Winter Selfie', sans-serif;
    font-size: 1.15rem;
}

.builder-download-btn:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    transform: none !important;
}

@media (max-width: 900px) {
    .builder-workspace {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .builder-preview-panel {
        position: static;
        max-width: 400px;
        margin: 0 auto;
        width: 100%;
    }

    .builder-editor.details-card {
        padding: 24px 20px 28px;
    }

    .builder-load-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .builder-load-btn {
        justify-content: center;
    }

    .builder-trait-grid {
        max-height: 280px;
    }
}

@media (max-width: 520px) {
    .builder-hero {
        padding-top: 40px;
    }

    .builder-trait-grid {
        grid-template-columns: repeat(auto-fill, minmax(76px, 1fr));
    }
}