/* Mobile-first, self-contained: no web fonts, no framework, nothing loaded from another origin. */
:root {
    --ink: #1d1d1b;
    --ink-soft: #5c5c58;
    --paper: #f6f3ee;
    --card: #ffffff;
    --line: #dcd6cc;
    --accent: #7a2e1d;
    --accent-ink: #ffffff;
    --error: #b3261e;
    --banner: #fff4d6;
    --banner-ink: #6b4b00;
    --radius: 10px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 17px;
    line-height: 1.5;
    color: var(--ink);
    background: var(--paper);
}

.wrap {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 16px;
}

.site-header {
    background: var(--ink);
    color: #fff;
    padding: 14px 0;
}

.site-header .wrap { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 14px; }
.brand { font-weight: 700; letter-spacing: 0.02em; }
.brand-sub { color: #cfc8ba; font-size: 0.95rem; }

main.wrap { padding-top: 20px; padding-bottom: 32px; }

.site-footer { color: var(--ink-soft); font-size: 0.85rem; padding: 12px 0 28px; }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 18px 16px;
    margin-bottom: 16px;
}

h1 { font-size: 1.5rem; margin: 0 0 10px; line-height: 1.25; }
h2 { font-size: 1.15rem; margin: 0 0 8px; }
p { margin: 0 0 10px; }
hr { border: 0; border-top: 1px solid var(--line); margin: 16px 0; }

.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; color: var(--ink-soft); margin-bottom: 2px; }
.sample-code { font-size: 2.1rem; letter-spacing: 0.04em; margin-bottom: 6px; font-variant-numeric: tabular-nums; }
.sample-facts { display: flex; flex-wrap: wrap; gap: 6px 14px; font-weight: 600; margin-bottom: 12px; }
.muted { color: var(--ink-soft); }
.small { font-size: 0.85rem; }
.banner { background: var(--banner); color: var(--banner-ink); border-radius: 6px; padding: 8px 12px; }

.field { margin: 0 0 16px; }
.field label { display: block; font-weight: 600; margin-bottom: 6px; }
.req { color: var(--accent); }

select, textarea, input[type="number"] {
    width: 100%;
    font: inherit;
    color: var(--ink);
    background: #fff;
    border: 1px solid #b9b2a6;
    border-radius: 8px;
    padding: 12px 12px;
    min-height: 48px;
}

select { appearance: none; -webkit-appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink-soft) 50%), linear-gradient(135deg, var(--ink-soft) 50%, transparent 50%); background-position: calc(100% - 20px) 50%, calc(100% - 14px) 50%; background-size: 6px 6px, 6px 6px; background-repeat: no-repeat; padding-right: 40px; }

textarea { resize: vertical; }

select:focus, textarea:focus, input:focus, button:focus, summary:focus { outline: 3px solid #e2b26b; outline-offset: 2px; }

.field-error select, .field-error textarea, .field-error input { border-color: var(--error); }
.error-text { display: block; color: var(--error); font-size: 0.9rem; margin-top: 4px; }
.error-text:empty { display: none; }
.validation-summary ul { margin: 0; padding-left: 20px; color: var(--error); }
.validation-summary:empty, .validation-summary ul:empty { display: none; }

details.remark { margin-top: 6px; }
details.remark summary { cursor: pointer; color: var(--accent); font-size: 0.95rem; padding: 6px 0; list-style: none; }
details.remark summary::-webkit-details-marker { display: none; }
details.remark summary::before { content: "+ "; }
details.remark[open] summary::before { content: "\2013 "; }
details.remark textarea { margin-top: 6px; }

.score-row { display: flex; align-items: center; gap: 14px; }
.score-row input[type="range"] { flex: 1 1 auto; min-height: 48px; accent-color: var(--accent); }
.score-row input[type="number"] { flex: 0 0 96px; text-align: center; font-size: 1.25rem; font-weight: 700; }

.button-primary {
    display: block;
    width: 100%;
    font: inherit;
    font-weight: 700;
    color: var(--accent-ink);
    background: var(--accent);
    border: 0;
    border-radius: 8px;
    padding: 14px 18px;
    min-height: 52px;
    cursor: pointer;
}
.button-primary:disabled { opacity: 0.6; cursor: default; }

.reveal-card { border-color: var(--accent); }
.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 10px; }
.facts dt { color: var(--ink-soft); }
.facts dd { margin: 0; font-weight: 600; }

.score-summary { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 12px; }
.score-big { font-size: 2rem; font-weight: 700; }

.copy-table { width: 100%; border-collapse: collapse; margin-bottom: 18px; }
.copy-table th, .copy-table td { text-align: left; vertical-align: top; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.copy-table th { width: 38%; font-weight: 600; color: var(--ink-soft); }
.remark-copy { display: block; color: var(--ink-soft); white-space: pre-wrap; font-size: 0.95rem; }

.note-copy { margin-bottom: 12px; }
.note-label { font-weight: 600; }
.note-text { white-space: pre-wrap; }

@media (min-width: 600px) {
    body { font-size: 16px; }
    .card { padding: 22px 24px; }
    .button-primary { width: auto; min-width: 240px; }
}

@media print {
    body { background: #fff; }
    .site-header, .site-footer, .submit-card, details.remark summary { display: none; }
    .card { border: 0; padding: 0; margin-bottom: 12px; break-inside: avoid; }
}