:root {
    --accent: #a80000;
    --accent-dark: #800000;
    --accent-soft: #fff3f3;
    --bg: #f4f5f7;
    --surface: #ffffff;
    --surface-alt: #fafafa;
    --text: #202124;
    --muted: #6b7075;
    --border: #e1e3e6;
    --border-soft: #eceef0;
    --shadow: 0 3px 14px rgba(30, 35, 40, .055);
    --success: #16794d;
    --danger: #b42318;
    color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background: var(--bg);
    color: var(--text);
}
a { color: var(--accent); }
.container { width: min(1480px, calc(100% - 28px)); margin: 0 auto; }
.public-container { padding-top: 1px; }

.hero {
    padding: 28px 20px 18px;
    text-align: center;
}
.hero h1 {
    margin: 0;
    color: var(--accent);
    font-size: clamp(1.65rem, 3.5vw, 2.7rem);
    line-height: 1.1;
    letter-spacing: .018em;
}
.hero p {
    max-width: 760px;
    margin: 7px auto 0;
    color: var(--muted);
    font-size: .95rem;
    line-height: 1.45;
}

.category-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-bottom: 22px;
}
.category-card {
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    box-shadow: var(--shadow);
}
.category-header {
    position: relative;
    padding: 8px 14px 9px;
    text-align: center;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, #ffffff 0%, #fbfbfb 100%);
}
.category-header::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -1px;
    width: 92px;
    height: 2px;
    transform: translateX(-50%);
    background: var(--accent);
}
.category-header h2 {
    margin: 0;
    color: var(--accent);
    font-size: 1.05rem;
    line-height: 1.2;
    letter-spacing: .01em;
}
.donor-count {
    margin-top: 2px;
    color: var(--muted);
    font-size: .71rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .075em;
}

.donor-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
}
.donor-item {
    min-width: 0;
    min-height: 58px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    padding: 8px 10px;
    text-align: center;
    border-right: 1px solid var(--border-soft);
    border-bottom: 1px solid var(--border-soft);
    overflow: hidden;
    font-size: .89rem;
    line-height: 1.2;
    transition: background-color .14s ease;
}
.donor-item:nth-child(8n+1),
.donor-item:nth-child(8n+2),
.donor-item:nth-child(8n+3),
.donor-item:nth-child(8n+4) {
    background: var(--surface-alt);
}
.donor-item:hover { background: var(--accent-soft); }
.donor-item:nth-child(4n) { border-right: 0; }
.donor-item:nth-last-child(-n+4) { border-bottom: 0; }
.callsign {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: .045em;
    line-height: 1.15;
    text-decoration: none;
}
.callsign:hover,
.callsign:focus-visible {
    color: var(--accent-dark);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.donor-name-only {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 32px;
    color: #3f4449;
    font-size: .94rem;
    font-weight: 600;
    line-height: 1.3;
    text-align: center;
}
.donor-item-name-only {
    gap: 0;
}

.donor-name {
    display: block;
    max-width: 100%;
    overflow: hidden;
    color: #555b61;
    font-size: .82rem;
    font-weight: 400;
    line-height: 1.25;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.qrz-note {
    margin-top: 9px !important;
    color: #7b7f84 !important;
    font-size: .78rem !important;
}

.empty {
    color: var(--muted);
    text-align: center;
    padding: 16px;
    font-size: .88rem;
}
.footer {
    color: var(--muted);
    text-align: center;
    padding: 12px 0 24px;
    font-size: .82rem;
}

.admin-shell { width: min(820px, calc(100% - 32px)); margin: 40px auto; }
.admin-card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 24px; box-shadow: var(--shadow); }
label { display: block; margin: 0 0 8px; font-weight: bold; }
input[type="text"], input[type="password"], input[type="file"] { width: 100%; padding: 11px; border-radius: 7px; border: 1px solid var(--border); background: #fff; color: var(--text); }
.form-row { margin-bottom: 18px; }
.field-help { margin: 6px 0 0; color: var(--muted); font-size: .82rem; }
.settings-actions { margin-top: 22px; }
button, .button { display: inline-block; border: 0; border-radius: 7px; padding: 10px 16px; background: var(--accent); color: #fff; font-weight: bold; cursor: pointer; text-decoration: none; }
button:hover, .button:hover { background: var(--accent-dark); }
.button-secondary { background: #f7f7f7; color: var(--text); border: 1px solid var(--border); }

.button-danger {
    background: #c62828;
    color: #fff;
}
.button-danger:hover,
.button-danger:focus-visible {
    background: #9f1f1f;
}
.danger-zone {
    margin: 24px 0;
    padding: 18px;
    border: 1px solid #efb6b6;
    border-radius: 8px;
    background: #fff7f7;
}
.danger-zone h2 {
    margin-top: 0;
    color: #b42318;
}
.actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.notice { padding: 14px 16px; border-radius: 7px; margin: 18px 0; background: #fafafa; }
.notice.success { color: var(--success); }
.notice.error { color: var(--danger); }
.help { color: var(--muted); line-height: 1.55; }
code, pre { background: #fafafa; border: 1px solid var(--border); border-radius: 7px; }
code { padding: 2px 5px; }
pre { padding: 14px; overflow-x: auto; }
ul.errors { color: var(--danger); }

@media (max-width: 1050px) {
    .donor-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .donor-item:nth-child(4n) { border-right: 1px solid var(--border-soft); }
    .donor-item:nth-child(2n) { border-right: 0; }
    .donor-item:nth-last-child(-n+4) { border-bottom: 1px solid var(--border-soft); }
    .donor-item:nth-last-child(-n+2) { border-bottom: 0; }
    .donor-item:nth-child(8n+1),
    .donor-item:nth-child(8n+2),
    .donor-item:nth-child(8n+3),
    .donor-item:nth-child(8n+4) { background: transparent; }
    .donor-item:nth-child(4n+1),
    .donor-item:nth-child(4n+2) { background: var(--surface-alt); }
    .donor-item:hover { background: var(--accent-soft); }
}

@media (max-width: 620px) {
    .container { width: min(100% - 14px, 1480px); }
    .hero { padding: 22px 8px 15px; }
    .hero h1 { font-size: 1.65rem; }
    .hero p { font-size: .88rem; }
    .category-list { gap: 9px; }
    .category-header { padding: 7px 10px 8px; }
    .donor-grid { grid-template-columns: 1fr; }
    .donor-item,
    .donor-item:nth-child(2n),
    .donor-item:nth-child(4n) { border-right: 0; }
    .donor-item:nth-last-child(-n+2) { border-bottom: 1px solid var(--border-soft); }
    .donor-item:last-child { border-bottom: 0; }
    .donor-item,
    .donor-item:nth-child(4n+1),
    .donor-item:nth-child(4n+2) { background: transparent; }
    .donor-item:nth-child(2n+1) { background: var(--surface-alt); }
    .donor-item:hover { background: var(--accent-soft); }
    .donor-item { min-height: 56px; padding: 8px; font-size: .88rem; }
}

/* Certificate search: uses the existing light visual language. */
.certificate-search-card{background:#fff;border:1px solid #e2e2e2;border-radius:8px;padding:18px;margin:0 0 26px;text-align:center;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.certificate-search-card h2{margin:0 0 8px;color:#a80000;font-size:20px}
.certificate-search-card p{margin:0 0 14px;color:#666;font-size:14px}
.certificate-search-form{display:flex;gap:10px;max-width:680px;margin:0 auto;justify-content:center}
.certificate-search-form input{flex:1;min-width:0;border:1px solid #d8d8d8;border-radius:6px;padding:10px 12px;font:inherit}
.certificate-search-form button,.certificate-download{border:0;border-radius:6px;background:#a80000;color:#fff;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;display:inline-block}
.certificate-search-form button:hover,.certificate-download:hover{background:#800000}
.certificate-results{max-width:760px;margin:14px auto 0;text-align:left}
.certificate-result{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 4px;border-top:1px solid #eee}
.certificate-result-data{text-align:left}
.certificate-result-call{font-weight:700;color:#a80000}
.certificate-result-name{color:#555}
.certificate-message{margin-top:12px;color:#666;text-align:center}
@media(max-width:640px){.certificate-search-form{flex-direction:column}.certificate-result{align-items:flex-start;flex-direction:column}.certificate-download{width:100%;text-align:center}}

/* Certificate Designer admin entry only. */
.designer-entry{margin-top:18px;padding-top:18px;border-top:1px solid var(--border)}