/* Head Texture Generator
   Page layout only. Header, hero, section headings, search box, info cards,
   copy buttons and toasts come from site-modern-v1.css. */

/* Several blocks below set display, which would beat the hidden attribute. */
.htg-section [hidden],
.htg-info-section [hidden] {
    display: none !important;
}

.htg-section {
    padding: var(--spacing-2xl) 0;
}

/* ===== VERSION NOTICE ===== */
.htg-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: color-mix(in srgb, var(--primary) 10%, var(--bg-card));
    border: 1px solid color-mix(in srgb, var(--primary) 45%, var(--border-color));
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

.htg-notice > i {
    font-size: 1.4rem;
    color: var(--primary);
    flex-shrink: 0;
}

.htg-notice strong {
    color: var(--text-primary);
}

/* ===== LAYOUT ===== */
.htg-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 360px);
    gap: var(--spacing-xl);
    align-items: start;
}

.htg-browser,
.htg-panel {
    min-width: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.htg-panel {
    position: sticky;
    top: 90px;
}

/* ===== TABS ===== */
.htg-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.htg-tab {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 18px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.htg-tab:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.htg-tab.active {
    background: var(--primary-gradient);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 12px color-mix(in srgb, var(--primary) 30%, transparent);
}

/* ===== TOOLBAR ===== */
.htg-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.htg-toolbar .search-box {
    flex: 1 1 260px;
}

.htg-toolbar .search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
    pointer-events: none;
}

.htg-select,
.htg-input {
    width: 100%;
    min-width: 0;
    padding: 10px 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: var(--text-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.htg-toolbar .htg-select {
    width: auto;
    flex: 0 1 220px;
}

.htg-select:focus,
.htg-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 22%, transparent);
}

.htg-stats {
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
}

.htg-check {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
}

.htg-check input {
    accent-color: var(--primary);
}

/* ===== TEXTURE CARDS ===== */
/* The list scrolls inside its own box instead of stretching the page. */
.htg-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    align-content: start;
    gap: var(--spacing-md);
    max-height: min(640px, 70vh);
    overflow-y: auto;
    padding: var(--spacing-sm);
    scrollbar-gutter: stable;
    background-color: color-mix(in srgb, var(--bg-surface) 30%, transparent);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.htg-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    min-width: 0;
    padding: var(--spacing-md) var(--spacing-sm);
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.htg-card:hover:not(:disabled) {
    transform: translateY(-3px);
    border-color: var(--primary);
}

.htg-card[aria-pressed="true"] {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--primary) 45%, transparent);
}

.htg-card:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.htg-card-tex {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4px;
    background-color: rgba(0, 0, 0, 0.2);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.htg-card-tex img {
    width: 44px;
    height: 44px;
    object-fit: contain;
    image-rendering: pixelated;
}

.htg-card-tex img.is-icon {
    image-rendering: auto;
}

.htg-card-name {
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.3;
    overflow-wrap: anywhere;
}

.htg-card-id {
    font-family: var(--mono-font);
    font-size: 0.7rem;
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

.htg-card-cat {
    padding: 2px 8px;
    background-color: var(--bg-card);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.68rem;
}

.htg-card-foot {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 4px;
    margin-top: auto;
    padding-top: 4px;
}

.htg-card-select {
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
}

.htg-badge {
    padding: 2px 7px;
    border-radius: var(--radius-full);
    font-size: 0.64rem;
    font-weight: 700;
}

.htg-badge-newer {
    background-color: color-mix(in srgb, #fbbf24 20%, transparent);
    color: #fbbf24;
}

.htg-badge-off {
    background-color: color-mix(in srgb, #f87171 18%, transparent);
    color: #f87171;
}

/* ===== CUSTOM PATH ===== */
.htg-custom {
    max-width: 560px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.htg-custom .htg-input {
    font-family: var(--mono-font);
}

.htg-status {
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    overflow-wrap: anywhere;
}

.htg-status.is-error {
    color: #f87171;
}

/* ===== SELECTION PANEL ===== */
.htg-panel-title {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-md);
}

.htg-empty {
    padding: var(--spacing-md) 0;
    color: var(--text-secondary);
}

.htg-preview {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.htg-preview-3d {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.htg-anim-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: border-color var(--transition-fast), color var(--transition-fast);
}

.htg-anim-btn:hover {
    border-color: var(--primary);
    color: var(--text-primary);
}

.htg-preview-3d canvas {
    display: block;
    max-width: 100%;
    border-radius: var(--radius-md);
    background: radial-gradient(circle at 50% 40%, color-mix(in srgb, var(--primary) 16%, transparent), transparent 70%);
    cursor: grab;
}

.htg-preview-2d {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.htg-preview-2d img {
    width: 88px;
    height: 88px;
    object-fit: contain;
    image-rendering: pixelated;
    background: repeating-conic-gradient(rgba(255, 255, 255, 0.06) 0% 25%, transparent 0% 50%) 50% / 16px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.htg-preview-label {
    color: var(--text-muted);
    font-size: 0.72rem;
}

.htg-preview-error {
    margin-bottom: var(--spacing-sm);
    color: #f87171;
    font-size: var(--text-sm);
}

.htg-selected-name {
    margin: var(--spacing-sm) 0 4px;
    color: var(--text-primary);
    font-size: var(--text-lg);
    font-weight: 700;
    overflow-wrap: anywhere;
}

.htg-path {
    display: inline-block;
    max-width: 100%;
    padding: 2px 8px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--primary);
    font-family: var(--mono-font);
    font-size: 0.8rem;
    overflow-wrap: anywhere;
}

.htg-newer {
    margin-top: 6px;
    color: #fbbf24;
    font-size: 0.78rem;
}

.htg-hint {
    margin-top: var(--spacing-sm);
    color: var(--text-muted);
    font-size: 0.78rem;
    line-height: 1.5;
}

.htg-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.htg-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    font-weight: 600;
}

.htg-selection .htg-field {
    margin-top: var(--spacing-sm);
}

.htg-field-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-sm);
}

.htg-error {
    color: #f87171;
    font-size: 0.8rem;
}

.htg-command-box {
    padding: 12px;
    text-align: center;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.htg-command-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.htg-command {
    display: flex;
    text-align: center;
    color: var(--text-primary);
    font-family: var(--mono-font);
    font-size: 0.78rem;
    line-height: 1.5;
    text-align: left;
    word-break: break-all;
    justify-content: center;
}

.htg-copy {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-md);
}

.htg-copy:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ===== INFO BOX ===== */
.htg-info {
    max-width: 860px;
    margin: 0 auto;
}

.htg-info p + p {
    margin-top: var(--spacing-sm);
}

/* ===== EXAMPLES ===== */
.htg-examples {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
    gap: var(--spacing-lg);
}

.htg-example {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-width: 0;
    padding: var(--spacing-lg);
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
}

.htg-example h3 {
    font-size: var(--text-base);
}

.htg-example-box {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 12px;
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.htg-example-box code {
    flex: 1;
    min-width: 0;
    color: var(--text-primary);
    font-family: var(--mono-font);
    font-size: 0.74rem;
    text-align: left;
    word-break: break-all;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 992px) {
    .htg-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .htg-panel {
        position: static;
    }
}

@media (max-width: 576px) {
    .htg-browser,
    .htg-panel {
        padding: var(--spacing-md);
    }

    .htg-notice {
        flex-direction: column;
        padding: var(--spacing-md);
    }

    .htg-tab {
        padding: 8px 12px;
    }

    .htg-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: var(--spacing-sm);
        max-height: 60vh;
    }

    .htg-toolbar .htg-select {
        flex: 1 1 100%;
    }

    .htg-field-row {
        grid-template-columns: minmax(0, 1fr);
    }
}