/**
 * SMC Parts Finder v3.0 - Modern Professional Styling
 * Clean, minimal design with proper proportions
 */

/* === Variables === */
:root {
    --spf-primary: #0066cc;
    --spf-primary-hover: #0052a3;
    --spf-text: #1f2937;
    --spf-text-muted: #6b7280;
    --spf-border: #e5e7eb;
    --spf-bg: #ffffff;
    --spf-bg-soft: #f9fafb;
    --spf-success: #059669;
    --spf-warning: #dc2626;
    --spf-radius: 8px;
    --spf-shadow: 0 1px 3px rgba(0,0,0,0.1);
    --spf-shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

/* === Container === */
.spf-wrap {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--spf-text);
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* === FiboSearch container === */
.spf-fibosearch {
    margin-bottom: 12px;
}

.spf-fibosearch form {
    max-width: 600px;
    margin: 0 auto;
}

/* === Header === */
.spf-header {
    text-align: center;
    margin-bottom: 24px;
}

.spf-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--spf-text);
}

.spf-subtitle {
    color: var(--spf-text-muted);
    margin: 0 0 8px;
    font-size: 1rem;
}

/* Instructional steps under the header */
.spf-steps-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: inline-block;
    text-align: left;
    font-size: 0.9375rem;
    color: var(--spf-text-muted);
}

.spf-steps-list li + li {
    margin-top: 2px;
}

/* Tabs for dual-flow finder */
.spf-tabs {
    display: flex;
    gap: 8px;
    margin: 16px 0;
    border-bottom: 1px solid var(--spf-border);
}

.spf-tab {
    border: none;
    background: transparent;
    padding: 8px 14px;
    font-size: 0.9375rem;
    cursor: pointer;
    border-radius: var(--spf-radius) var(--spf-radius) 0 0;
    border: 1px solid transparent;
    color: var(--spf-text-muted);
}

.spf-tab--active {
    border-color: var(--spf-border);
    border-bottom-color: #fff;
    background: #fff;
    font-weight: 600;
    color: var(--spf-text);
}

.spf-tab-panel {
    display: none;
}

.spf-tab-panel--active {
    display: block;
}

@media (max-width: 600px) {
    .spf-tabs {
        flex-wrap: wrap;
    }
    .spf-tab {
        flex: 1 1 100%;
        text-align: center;
    }
}

/* Model number help section */
.spf-help {
    margin: 16px 0 24px;
    padding: 16px 20px;
    background: var(--spf-bg-soft);
    border: 1px solid var(--spf-border);
    border-radius: var(--spf-radius);
    text-align: left;
}

.spf-help[aria-hidden="true"] {
    display: none;
}

.spf-help-title {
    margin: 0 0 8px;
    font-size: 1rem;
    font-weight: 600;
}

.spf-help-list {
    margin: 0 0 8px 18px;
    padding: 0;
    color: var(--spf-text-muted);
    font-size: 0.9rem;
}

.spf-help-footer {
    margin: 0;
    font-size: 0.9rem;
    color: var(--spf-text-muted);
}

.spf-help-link {
    margin-top: 4px;
    font-size: 0.875rem;
}

/* Row for the "Don't know your model number?" link under the three inputs */
.spf-help-link-row {
    margin-top: 8px;
    margin-bottom: 8px;
    text-align: left;
}

.spf-help-link-row .spf-link-button {
    font-size: 0.875rem;
}

/* Help-flow panel (guided search) */
.spf-helpflow-title {
    margin: 0 0 4px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--spf-text);
}

.spf-helpflow-text {
    margin: 0 0 12px;
    font-size: 0.9375rem;
    color: var(--spf-text-muted);
}

.spf-helpflow-fields {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.spf-helpflow-description {
    grid-column: span 3;
}

.spf-helpflow-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 8px;
}

@media (max-width: 900px) {
    .spf-helpflow-fields {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .spf-helpflow-description {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .spf-helpflow-fields {
        grid-template-columns: 1fr;
    }
    .spf-helpflow-description {
        grid-column: span 1;
    }
}

/* Inline text-style button for help toggle */
.spf-link-button,
.spf-help-toggle {
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    color: var(--spf-primary);
    cursor: pointer;
    text-decoration: underline;
    font: inherit;
}

.spf-link-button:hover,
.spf-help-toggle:hover {
    color: var(--spf-primary-hover);
}

/* Optional "open" state styling for the help toggle */
.spf-help-toggle.is-open {
    text-decoration: none;
    font-weight: 600;
}

/* Empty-state CTA button/link */
.spf-empty-cta {
    display: inline-block;
    margin-top: 8px;
    padding: 8px 14px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background: var(--spf-primary);
    border-radius: var(--spf-radius);
    text-decoration: none;
}

.spf-empty-cta:hover {
    background: var(--spf-primary-hover);
}

/* Small tweaks for mobile spacing */
@media (max-width: 600px) {
    .spf-help {
        padding: 14px 16px;
        margin: 12px 0 20px;
    }
}

/* === Finder Form === */
.spf-finder {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto; /* equal widths for Brand, Category, Model */
    gap: 16px;
    align-items: center; /* ensure controls align evenly across themes */
    box-sizing: border-box;
    background: var(--spf-bg);
    border: 1px solid var(--spf-border);
    border-radius: var(--spf-radius);
    padding: 20px;
    margin-bottom: 16px; /* slightly tighter gap before help/link */
    box-shadow: var(--spf-shadow);
}

@media (max-width: 900px) {
    .spf-finder {
        grid-template-columns: 1fr 1fr;
    }
    .spf-step-model,
    .spf-step-btn {
        grid-column: span 2;
    }
}

@media (max-width: 600px) {
    .spf-finder {
        grid-template-columns: 1fr;
    }
    .spf-step-model,
    .spf-step-btn {
        grid-column: span 1;
    }
}

.spf-step {
    display: flex;
    flex-direction: column;
    gap: 4px; /* slightly tighter to keep label + field on a clean grid */
}

/* Dedicated step for the main Search button so it lines up cleanly
   with the other fields on desktop, while remaining full-width on
   tablet and mobile. */
.spf-step-btn {
    align-self: stretch;
    display: flex;
    align-items: flex-end;
    margin-top: 0 !important; /* neutralise theme-injected margins */
}

.spf-step-btn .spf-button {
    width: 100%;
    margin: 0; /* prevent theme button margins breaking baseline alignment */
}

.spf-label {
    font-size: 0.875rem;
    font-weight: 600;
    margin: 0 0 4px;
    line-height: 1.2;
    color: var(--spf-text);
}

.spf-select,
.spf-input {
    appearance: none;
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    border: 1px solid var(--spf-border);
    border-radius: var(--spf-radius);
    background: var(--spf-bg);
    color: var(--spf-text);
    transition: border-color 0.15s, box-shadow 0.15s;
}

.spf-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.spf-select:disabled {
    background-color: var(--spf-bg-soft);
    cursor: not-allowed;
    opacity: 0.7;
}

.spf-select:focus,
.spf-input:focus {
    outline: none;
    border-color: var(--spf-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
}

/* === Model Autocomplete === */
.spf-model-wrap {
    position: relative;
}

.spf-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--spf-bg);
    border: 1px solid var(--spf-border);
    border-top: none;
    border-radius: 0 0 var(--spf-radius) var(--spf-radius);
    box-shadow: var(--spf-shadow-lg);
    max-height: 240px;
    overflow-y: auto;
    z-index: 100;
    display: none;
}

.spf-suggestions.is-open {
    display: block;
}

.spf-suggestion {
    padding: 10px 14px;
    cursor: pointer;
    border-bottom: 1px solid var(--spf-border);
    transition: background 0.1s;
}

.spf-suggestion:last-child {
    border-bottom: none;
}

.spf-suggestion:hover,
.spf-suggestion.is-active {
    background: var(--spf-bg-soft);
}

.spf-suggestion-model {
    font-weight: 600;
    color: var(--spf-text);
}

.spf-suggestion-meta {
    font-size: 0.8125rem;
    color: var(--spf-text-muted);
    margin-top: 2px;
}

/* === Search Button === */
.spf-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    color: #fff;
    background: var(--spf-primary);
    border: none;
    border-radius: var(--spf-radius);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    white-space: nowrap;
}

.spf-button:hover {
    background: var(--spf-primary-hover);
}

.spf-button:active {
    transform: scale(0.98);
}

.spf-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* === Controls Bar === */
.spf-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 12px 16px;
    background: var(--spf-bg-soft);
    border-radius: var(--spf-radius);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.spf-controls-left,
.spf-controls-right {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.spf-results-count {
    font-weight: 600;
    color: var(--spf-text);
}

.spf-active-filters {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.spf-filter-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--spf-primary);
    color: #fff;
    font-size: 0.8125rem;
    border-radius: 999px;
}

.spf-filter-tag button {
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    opacity: 0.8;
}

.spf-filter-tag button:hover {
    opacity: 1;
}

.spf-sort {
    padding: 8px 12px;
    font-size: 0.875rem;
    border: 1px solid var(--spf-border);
    border-radius: var(--spf-radius);
    background: var(--spf-bg);
}

.spf-stock-filter {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    cursor: pointer;
}

.spf-stock-filter input {
    cursor: pointer;
}

/* === Results Grid === */
.spf-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
}

@media (max-width: 540px) {
    .spf-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}

/* === Product Card === */
.spf-card {
    display: flex;
    flex-direction: column;
    background: var(--spf-bg);
    border: 1px solid var(--spf-border);
    border-radius: var(--spf-radius);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    transition: box-shadow 0.15s, border-color 0.15s, transform 0.1s;
}

.spf-card:hover {
    border-color: var(--spf-primary);
    box-shadow: var(--spf-shadow-lg);
    transform: translateY(-2px);
}

.spf-card-image {
    aspect-ratio: 1;
    background: var(--spf-bg-soft);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.spf-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.spf-card-image .spf-no-image {
    color: var(--spf-text-muted);
    font-size: 0.875rem;
}

.spf-card-body {
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.spf-card-badges {
    margin-bottom: 4px;
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.spf-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: normal;
}

.spf-badge--confirm {
    background: #e0f7e9;
    color: #1b5e20;
}

.spf-badge--likely {
    background: #fff4e5;
    color: #8a4800;
}

.spf-badge--warn {
    background: #f5f5f5;
    color: #555555;
}

.spf-card-title {
    font-weight: 600;
    font-size: 0.9375rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.6em;
}

.spf-card-meta {
    font-size: 0.8125rem;
    color: var(--spf-text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.spf-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
}

.spf-card-price {
    font-weight: 700;
    font-size: 1rem;
    color: var(--spf-text);
}

.spf-card-stock {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 8px;
    border-radius: 999px;
}

.spf-card-stock.in-stock {
    background: rgba(5, 150, 105, 0.1);
    color: var(--spf-success);
}

.spf-card-stock.out-of-stock {
    background: rgba(220, 38, 38, 0.1);
    color: var(--spf-warning);
}

/* === Loading & Empty States === */
.spf-loader {
    text-align: center;
    padding: 40px;
    color: var(--spf-text-muted);
    display: none;
}

.spf-loader.is-loading {
    display: block;
}

.spf-empty {
    text-align: center;
    padding: 60px 20px;
    color: var(--spf-text-muted);
}

.spf-empty svg {
    opacity: 0.3;
    margin-bottom: 16px;
}

.spf-empty p {
    margin: 0 0 8px;
}

.spf-empty-hint {
    font-size: 0.875rem;
}

/* === Load More === */
.spf-load-more {
    display: block;
    width: 100%;
    max-width: 200px;
    margin: 24px auto 0;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--spf-primary);
    background: var(--spf-bg);
    border: 1px solid var(--spf-primary);
    border-radius: var(--spf-radius);
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.spf-load-more:hover {
    background: var(--spf-primary);
    color: #fff;
}

/* === Animations === */
@keyframes spf-fade-in {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.spf-card {
    animation: spf-fade-in 0.2s ease-out;
}

/* === Dark Mode Support === */
@media (prefers-color-scheme: dark) {
    :root {
        --spf-text: #f3f4f6;
        --spf-text-muted: #9ca3af;
        --spf-border: #374151;
        --spf-bg: #1f2937;
        --spf-bg-soft: #111827;
    }
}

/* === Print === */
@media print {
    .spf-finder,
    .spf-controls,
    .spf-load-more {
        display: none !important;
    }
}