/* Book Price Comparison – Frontend Styles v1.1 */

.bpc {
    --bpc-primary: #1F4E79;
    --bpc-primary-dark: #163a5c;
    --bpc-accent: #0D7377;
    --bpc-bookfinder: #6A1B9A;
    --bpc-amazon: #FF9900;
    --bpc-abebooks: #8B0000;
    --bpc-thrift: #2E7D32;
    --bpc-heartland: #1565C0;
    --bpc-bg: #f8fafc;
    --bpc-border: #e2e8f0;
    --bpc-text: #1e293b;
    --bpc-muted: #64748b;
    --bpc-success: #15803d;
    --bpc-danger: #b91c1c;
    --bpc-input-bg: #fffbeb;
    --bpc-radius: 8px;
    --bpc-shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    color: var(--bpc-text);
    max-width: 1100px;
    margin: 0 auto 2rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--bpc-shadow);
    box-sizing: border-box;
}
.bpc *, .bpc *::before, .bpc *::after { box-sizing: border-box; }

/* Header */
.bpc-header { margin-bottom: 1.5rem; border-bottom: 2px solid var(--bpc-primary); padding-bottom: 1rem; }
.bpc-title { margin: 0 0 0.35rem; font-size: 1.75rem; color: var(--bpc-primary); font-weight: 700; }
.bpc-subtitle { margin: 0; color: var(--bpc-muted); font-size: 0.95rem; }

/* Search form */
.bpc-search-form {
    background: var(--bpc-bg); padding: 1.25rem; border-radius: var(--bpc-radius);
    border: 1px solid var(--bpc-border); margin-bottom: 1.5rem;
}
.bpc-type-selector { display: flex; gap: 1.25rem; margin-bottom: 0.85rem; flex-wrap: wrap; }
.bpc-radio { display: inline-flex; align-items: center; gap: 0.4rem; cursor: pointer; font-weight: 500; font-size: 0.95rem; }
.bpc-radio input { accent-color: var(--bpc-primary); width: 1.1em; height: 1.1em; }
.bpc-input-row { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.bpc-input {
    flex: 1 1 220px; padding: 0.7rem 1rem; border: 2px solid var(--bpc-border);
    border-radius: var(--bpc-radius); font-size: 1rem; background: #fff; transition: border-color 0.15s;
}
.bpc-input:focus { outline: none; border-color: var(--bpc-primary); box-shadow: 0 0 0 3px rgba(31,78,121,0.15); }
.bpc-hint { margin: 0.6rem 0 0; font-size: 0.85rem; color: var(--bpc-muted); }

/* Buttons */
.bpc-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    padding: 0.7rem 1.25rem; border: none; border-radius: var(--bpc-radius);
    font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: background 0.15s, transform 0.1s;
    white-space: nowrap;
}
.bpc-btn:active { transform: scale(0.98); }
.bpc-btn-primary { background: var(--bpc-primary); color: #fff; }
.bpc-btn-primary:hover { background: var(--bpc-primary-dark); }
.bpc-btn-secondary { background: #e2e8f0; color: var(--bpc-text); }
.bpc-btn-secondary:hover { background: #cbd5e1; }
.bpc-btn-danger { background: #fee2e2; color: var(--bpc-danger); }
.bpc-btn-danger:hover { background: #fecaca; }
.bpc-btn-icon {
    background: transparent; border: none; color: var(--bpc-danger); cursor: pointer;
    font-size: 1rem; padding: 0.25rem 0.5rem; border-radius: 4px;
}
.bpc-btn-icon:hover { background: #fee2e2; }
.bpc-spinner {
    width: 1em; height: 1em; border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff; border-radius: 50%; animation: bpc-spin 0.6s linear infinite;
}
@keyframes bpc-spin { to { transform: rotate(360deg); } }

/* Book card */
.bpc-book-card {
    display: flex; gap: 1.25rem; padding: 1.25rem; background: var(--bpc-bg);
    border-radius: var(--bpc-radius); border: 1px solid var(--bpc-border);
    margin-bottom: 1.5rem; align-items: flex-start;
}
.bpc-cover-wrap {
    flex-shrink: 0; width: 90px; height: 130px; background: #e2e8f0; border-radius: 4px;
    overflow: hidden; display: flex; align-items: center; justify-content: center;
}
.bpc-cover-wrap img { width: 100%; height: 100%; object-fit: cover; }
.bpc-cover-placeholder { font-size: 2.5rem; opacity: 0.5; }
.bpc-book-title { margin: 0 0 0.35rem; font-size: 1.35rem; color: var(--bpc-primary); }
.bpc-book-author { margin: 0 0 0.25rem; color: var(--bpc-muted); font-size: 1rem; }
.bpc-book-isbn { margin: 0; font-family: ui-monospace, monospace; font-size: 0.9rem; color: var(--bpc-muted); }

/* Links grid */
.bpc-links-section { margin-bottom: 1.5rem; }
.bpc-links-section h4 { margin: 0 0 0.75rem; font-size: 1.05rem; color: var(--bpc-primary); }
.bpc-links-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 0.75rem; }
.bpc-link-btn {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.25rem;
    padding: 0.85rem 0.75rem; border-radius: var(--bpc-radius); text-decoration: none; color: #fff;
    font-weight: 600; font-size: 0.9rem; text-align: center; transition: transform 0.12s, box-shadow 0.12s;
    min-height: 64px;
}
.bpc-link-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,0.15); color: #fff; text-decoration: none; }
.bpc-link-btn small { font-weight: 400; font-size: 0.75rem; opacity: 0.9; }
.bpc-link-amazon { background: var(--bpc-amazon); color: #111 !important; }
.bpc-link-abebooks { background: var(--bpc-abebooks); }
.bpc-link-thrift { background: var(--bpc-thrift); }
.bpc-link-heartland { background: var(--bpc-heartland); }
.bpc-link-bookfinder { background: var(--bpc-bookfinder); grid-column: span 2; }
@media (max-width: 600px) { .bpc-link-bookfinder { grid-column: span 1; } }

/* Price table */
.bpc-table-wrap { overflow-x: auto; margin-bottom: 1.25rem; border: 1px solid var(--bpc-border); border-radius: var(--bpc-radius); }
.bpc-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 700px; }
.bpc-table th {
    background: var(--bpc-primary); color: #fff; padding: 0.75rem 0.6rem;
    text-align: center; font-weight: 600; white-space: nowrap;
}
.bpc-table td { padding: 0.55rem 0.5rem; border-bottom: 1px solid var(--bpc-border); text-align: center; vertical-align: middle; }
.bpc-table tbody tr:nth-child(even) { background: #f8fafc; }
.bpc-table tbody tr:hover { background: #f1f5f9; }
.bpc-table tbody tr.is-best { background: #dcfce7 !important; }
.bpc-source-cell { font-weight: 600; text-align: left !important; padding-left: 0.85rem !important; white-space: nowrap; }
.bpc-source-amazon { color: #b36b00; }
.bpc-source-abebooks { color: var(--bpc-abebooks); }
.bpc-source-thrift { color: var(--bpc-thrift); }
.bpc-source-heartland { color: var(--bpc-heartland); }
.bpc-source-bookfinder { color: var(--bpc-bookfinder); }
.bpc-price-input {
    width: 85px; padding: 0.4rem 0.5rem; border: 1px solid var(--bpc-border);
    border-radius: 4px; text-align: right; font-size: 0.9rem; background: var(--bpc-input-bg);
}
.bpc-price-input:focus { outline: none; border-color: var(--bpc-primary); }
.bpc-notes-input {
    width: 100%; min-width: 120px; padding: 0.4rem 0.5rem; border: 1px solid var(--bpc-border);
    border-radius: 4px; font-size: 0.85rem; background: var(--bpc-input-bg);
}
.bpc-calc { font-weight: 600; }
.bpc-best-cell { font-weight: 700; color: var(--bpc-success); }
.bpc-mono { font-family: ui-monospace, monospace; font-size: 0.85rem; }

/* Summary */
.bpc-summary {
    display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1.5rem; padding: 1rem 1.25rem;
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border: 1px solid #86efac; border-radius: var(--bpc-radius);
}
.bpc-summary-item { flex: 1 1 140px; display: flex; flex-direction: column; gap: 0.2rem; }
.bpc-summary-item .label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--bpc-muted); font-weight: 600; }
.bpc-summary-item .value { font-size: 1.35rem; font-weight: 700; color: var(--bpc-success); }

/* Actions */
.bpc-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-bottom: 1rem; }

/* Saved list section */
.bpc-saved-section {
    margin-top: 2rem; padding-top: 1.5rem; border-top: 2px solid var(--bpc-primary);
}
.bpc-saved-header {
    display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
    gap: 1rem; margin-bottom: 1rem;
}
.bpc-saved-header h3 { margin: 0; font-size: 1.25rem; color: var(--bpc-primary); display: flex; align-items: center; gap: 0.5rem; }
.bpc-badge {
    display: inline-flex; align-items: center; justify-content: center;
    min-width: 1.6em; height: 1.6em; padding: 0 0.4em; border-radius: 999px;
    background: var(--bpc-primary); color: #fff; font-size: 0.8rem; font-weight: 700;
}
.bpc-saved-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.bpc-saved-title { text-align: left !important; font-weight: 600; max-width: 220px; }

/* Modal */
.bpc-modal {
    position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5);
    display: flex; align-items: center; justify-content: center; z-index: 99999; padding: 1rem;
}
.bpc-modal-content {
    background: #fff; border-radius: 12px; padding: 1.5rem; max-width: 420px; width: 100%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}
.bpc-modal-content h4 { margin: 0 0 1rem; color: var(--bpc-primary); }
.bpc-modal-content label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.3rem; margin-top: 0.75rem; }
.bpc-modal-actions { display: flex; gap: 0.75rem; margin-top: 1.25rem; }
.bpc-status { margin-top: 0.75rem; font-size: 0.9rem; }
.bpc-status.success { color: var(--bpc-success); }
.bpc-status.error { color: var(--bpc-danger); }

/* Footer */
.bpc-footer { border-top: 1px solid var(--bpc-border); padding-top: 1rem; margin-top: 1.5rem; }
.bpc-footer p { margin: 0 0 0.35rem; font-size: 0.85rem; color: var(--bpc-muted); }
.bpc-credit { font-size: 0.8rem !important; }

/* Print */
@media print {
    body * { visibility: hidden; }
    #bpc-wrapper, #bpc-wrapper * { visibility: visible; }
    #bpc-wrapper { position: absolute; left: 0; top: 0; width: 100%; box-shadow: none; padding: 0; max-width: none; }
    .bpc-search-form, .bpc-actions, .bpc-links-section, .bpc-modal, .bpc-footer,
    .bpc-saved-actions, .bpc-btn-icon { display: none !important; }
    .bpc-table { font-size: 11pt; }
    .bpc-price-input, .bpc-notes-input { border: none; background: transparent; padding: 0; }
}

@media (max-width: 640px) {
    .bpc { padding: 1rem; }
    .bpc-title { font-size: 1.4rem; }
    .bpc-book-card { flex-direction: column; align-items: center; text-align: center; }
    .bpc-summary { flex-direction: column; }
    .bpc-saved-header { flex-direction: column; align-items: flex-start; }
}