/* ============================================================
   main.css — AllUKGoods primary stylesheet
   Mobile-first, WCAG 2.2+ compliant, no external fonts.
   ============================================================ */

/* ── Reset & Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 100%; /* 16px base */
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #1a1a1a;
    background: #fafafa;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ── Skip Link (WCAG keyboard nav) ── */
.skip-link {
    position: absolute;
    top: -100%;
    left: 0;
    background: #1565c0;
    color: #fff;
    padding: 0.75rem 1.5rem;
    z-index: 1000;
    font-size: 1rem;
    text-decoration: none;
    border-radius: 0 0 4px 0;
}

.skip-link:focus {
    top: 0;
}

/* ── Header ── */
.site-header {
    background: #1565c0;
    color: #fff;
    padding: 1.5rem 1rem;
    text-align: center;
}

.site-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.site-title a {
    color: inherit;
    text-decoration: none;
}

.site-tagline {
    font-size: 1rem;
    opacity: 0.85;
    margin-top: 0.25rem;
}

/* ── Filter Section ── */
.filter-section {
    padding: 1.5rem 1rem;
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
}

.filter-section h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.filter-form {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
    max-width: 64rem;
    margin: 0 auto;
}

@media (min-width: 40rem) {
    .filter-form {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 64rem) {
    .filter-form {
        grid-template-columns: 1fr 1fr 1fr 1fr;
    }
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-group label {
    font-weight: 600;
    font-size: 0.875rem;
}

.filter-group input,
.filter-group select {
    padding: 0.625rem 0.75rem;
    border: 2px solid #bdbdbd;
    border-radius: 4px;
    font-size: 1rem;
    background: #fff;
    color: #1a1a1a;
    transition: border-color 0.2s;
}

.filter-group input:focus,
.filter-group select:focus {
    border-color: #1565c0;
    outline: 3px solid rgba(21, 101, 192, 0.3);
    outline-offset: 1px;
}

/* ── Buttons ── */
.btn-primary,
.btn-secondary {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    min-height: 44px; /* WCAG touch target */
    min-width: 44px;
}

.btn-primary {
    background: #1565c0;
    color: #fff;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: #0d47a1;
}

.btn-secondary {
    background: #e0e0e0;
    color: #1a1a1a;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: #bdbdbd;
}

.btn-primary:active,
.btn-secondary:active {
    transform: scale(0.97);
}

/* ── Results Grid ── */
.results-section {
    flex: 1;
    padding: 1.5rem 1rem;
    max-width: 80rem;
    margin: 0 auto;
    width: 100%;
}

.results-grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
}

@media (min-width: 40rem) {
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 64rem) {
    .results-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.results-placeholder {
    grid-column: 1 / -1;
    text-align: center;
    color: #757575;
    padding: 3rem 0;
    font-size: 1.125rem;
}

/* ── Business Card ── */
.business-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 1.25rem;
    transition: box-shadow 0.2s;
}

.business-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.business-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.business-card .card-meta {
    font-size: 0.875rem;
    color: #616161;
    margin-bottom: 0.5rem;
}

.business-card .card-description {
    font-size: 0.9375rem;
    color: #424242;
    margin-bottom: 0.75rem;
}

.business-card a {
    color: #1565c0;
    font-weight: 600;
    text-decoration: none;
}

.business-card a:hover,
.business-card a:focus-visible {
    text-decoration: underline;
}

/* ── Work-in-Progress Banner ── */
.wip-banner {
    background: #fff3e0;
    border-bottom: 2px solid #ff9800;
    color: #4e342e;
    text-align: center;
    padding: 0.75rem 1rem;
    font-size: 0.9375rem;
}

.wip-banner strong {
    color: #e65100;
}

/* ── Footer ── */
.site-footer {
    background: #212121;
    color: #e0e0e0;
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: 0.875rem;
    margin-top: auto;
}

.site-footer a {
    color: #90caf9;
    text-decoration: none;
}

.site-footer a:hover,
.site-footer a:focus-visible {
    text-decoration: underline;
}

/* ── Focus indicators (WCAG 2.2+) ── */
:focus-visible {
    outline: 3px solid #1565c0;
    outline-offset: 2px;
}

/* ── Privacy Policy page ── */
.privacy-policy {
    max-width: 48rem;
    margin: 2rem auto;
    padding: 0 1rem;
}

.privacy-policy h2 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
}

.privacy-policy h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.privacy-policy p {
    margin-bottom: 0.75rem;
}