/* ============================================================
   InStockBOM - Stylesheet
   Color scheme: dark navy/charcoal with accent blue (#2196F3)
   ============================================================ */

/* --- Reset & Base --- */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

[hidden] {
    display: none !important;
}

:root {
    --bg-primary: #1a1d23;
    --bg-secondary: #22262e;
    --bg-card: #282c34;
    --bg-elevated: #2e3340;
    --bg-input: #1e2128;

    --text-primary: #e4e6ea;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;

    --accent: #2196F3;
    --accent-hover: #1e88e5;
    --accent-subtle: rgba(33, 150, 243, 0.12);
    --accent-border: rgba(33, 150, 243, 0.35);

    --border: #383c46;
    --border-light: #434852;

    --success: #4caf50;
    --success-bg: rgba(76, 175, 80, 0.1);
    --error: #ef5350;
    --error-bg: rgba(239, 83, 80, 0.1);

    --radius: 8px;
    --radius-sm: 4px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

    --transition: 150ms ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}


/* --- Header --- */

.site-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 2rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
}

.site-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.site-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}


/* --- Page Content --- */

.page-content {
    flex: 1;
    padding: 1.5rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

@media (max-width: 900px) {
    .page-content {
        padding: 1rem;
    }
}


/* --- Card --- */

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-description {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.card-body {
    padding: 1.5rem;
}


/* --- Card Primary (full-width, prominent) --- */

.card-primary {
    margin-bottom: 1.5rem;
}


/* --- Drop Zone --- */

.drop-zone {
    position: relative;
    border: 2px dashed var(--border-light);
    border-radius: var(--radius);
    padding: 2.5rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color var(--transition), background-color var(--transition);
}

.drop-zone:hover {
    border-color: var(--accent-border);
    background-color: var(--accent-subtle);
}

.drop-zone.drag-over {
    border-color: var(--accent);
    background-color: var(--accent-subtle);
}

.drop-zone.drop-success {
    border-color: var(--success);
    background-color: var(--success-bg);
}

.drop-zone-input {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.drop-zone-icon {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent);
    background-color: var(--accent-subtle);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-sm);
    padding: 0.375rem 0.75rem;
    margin-bottom: 0.75rem;
    letter-spacing: 0.05em;
    font-family: "SF Mono", "Cascadia Code", "Fira Code", "Consolas", monospace;
}

.drop-zone-text {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
}

.drop-zone-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}


/* --- BOM Controls (Card 1) --- */

.bom-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1rem;
}

.api-badge,
.db-badge {
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    white-space: nowrap;
}

.api-badge {
    color: var(--success);
    background-color: var(--success-bg);
    border: 1px solid rgba(76, 175, 80, 0.25);
}

.db-badge {
    color: var(--accent);
    background-color: var(--accent-subtle);
    border: 1px solid var(--accent-border);
}


.input-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

.number-input {
    width: 120px;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    font-family: inherit;
    color: var(--text-primary);
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition);
    -moz-appearance: textfield;
}

.number-input::-webkit-outer-spin-button,
.number-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.number-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-subtle);
}


/* --- Status & Error Messages --- */

.status-area {
    margin-top: 1rem;
}

.status-message {
    font-size: 0.8125rem;
    color: var(--success);
    background-color: var(--success-bg);
    border: 1px solid rgba(76, 175, 80, 0.25);
    border-radius: var(--radius-sm);
    padding: 0.625rem 0.875rem;
}

.error-area {
    margin-top: 1rem;
}

.error-text {
    font-size: 0.8125rem;
    color: var(--error);
    background-color: var(--error-bg);
    border: 1px solid rgba(239, 83, 80, 0.25);
    border-radius: var(--radius-sm);
    padding: 0.625rem 0.875rem;
}


/* --- Loading --- */

.loading-area {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin-top: 1rem;
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

.loading-text {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}


/* --- Results Panel --- */

.results-panel {
    margin-top: 1.5rem;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.results-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 1rem;
    flex-wrap: wrap;
}

.results-panel-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.results-panel-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.results-count {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
}


/* --- Button --- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    color: #fff;
    background-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--accent-hover);
    box-shadow: var(--shadow-sm);
}


/* --- Table --- */

.table-wrapper {
    overflow-x: auto;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.results-table thead {
    background-color: var(--bg-elevated);
}

.results-table th {
    font-weight: 600;
    text-align: left;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background-color: var(--bg-elevated);
    white-space: nowrap;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.results-table td {
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.results-table tbody tr:last-child td {
    border-bottom: none;
}

/* Description column wraps; other columns stay nowrap */
.results-table td.cell-description {
    white-space: normal;
    line-height: 1.4;
}

/* Compact columns that don't need much space */
.results-table th,
.results-table td {
    padding: 0.625rem 0.75rem;
}

.results-table .cell-link a {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
}

.results-table .cell-link a:hover {
    text-decoration: underline;
}

.results-table .cell-number {
    text-align: right;
    font-family: "SF Mono", "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 0.75rem;
}

.results-table .cell-part-link a {
    color: var(--accent);
    text-decoration: none;
    font-family: "SF Mono", "Cascadia Code", "Fira Code", "Consolas", monospace;
    font-size: 0.75rem;
}

.results-table .cell-part-link a:hover {
    text-decoration: underline;
}

.lib-type-basic {
    color: var(--success);
    font-weight: 500;
}

.lib-type-extended {
    color: #ff9800;
    font-weight: 500;
}

/* Alternating row stripes for readability on wide tables */
.results-table tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}

.results-table tbody tr:hover {
    background-color: var(--accent-subtle);
}


/* --- SEO Content Section --- */

.seo-content {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 2rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

.seo-content h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.seo-content ol {
    padding-left: 1.25rem;
    margin-bottom: 1rem;
}

.seo-content li {
    margin-bottom: 0.5rem;
}

.seo-content strong {
    color: var(--text-primary);
    font-weight: 500;
}

.seo-content p {
    color: var(--text-muted);
}


/* --- Footer --- */

.site-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 1rem 2rem;
    text-align: center;
}

.site-footer p {
    font-size: 0.75rem;
    color: var(--text-muted);
}


/* --- Responsive Adjustments --- */

@media (max-width: 600px) {
    .site-header {
        padding: 1rem;
    }

    .site-title {
        font-size: 1.25rem;
    }

    .card-body {
        padding: 1rem;
    }

    .drop-zone {
        padding: 1.5rem 1rem;
    }

    .bom-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .number-input {
        width: 100%;
    }

    .results-panel-header {
        flex-direction: column;
        align-items: stretch;
    }

    .results-panel-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        text-align: center;
        justify-content: center;
    }
}