:root {
  --bg: #faf7f0;
  --surface: #ffffff;
  --ink: #262220;
  --ink-soft: #6b635a;
  --rule: #ded5c4;
  --accent: #2e5339;
  --accent-soft: #e7f0e4;
  --highlight: #e2a33d;
  --highlight-soft: #fbecd4;
  --danger: #b3432b;
  --danger-soft: #f6e4de;
  --radius: 10px;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'SFMono-Regular', Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.5;
  padding: 0 0 64px;
}

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 32px 16px 0;
}

/* ---- Brand header ---- */
.site-header {
  background: #1c2b22;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  border-bottom: 3px solid var(--highlight);
}

.brand-logo {
  height: 74px;
  width: auto;
  display: block;
}

/* ---- Header ---- */
header.hero {
  margin-bottom: 28px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.eyebrow::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--highlight);
  display: inline-block;
}

h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 34px;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}

.sub {
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 52ch;
}

/* ---- Cards ---- */
.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
}

.card h2 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.card h2 .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 22px;
  height: 22px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---- Form controls ---- */
.field { margin-bottom: 14px; }

.row { display: flex; gap: 14px; flex-wrap: wrap; }
.row .field { flex: 1; min-width: 150px; }

label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

input[type="text"],
input[type="password"],
select,
textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 8px;
  background: #fffdfa;
  color: var(--ink);
}

textarea {
  resize: vertical;
  min-height: 64px;
  line-height: 1.5;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.key-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}
.key-row input { flex: 1; }

.checkbox-line {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}
.checkbox-line input { width: auto; }
.checkbox-line label { margin: 0; text-transform: none; font-weight: 400; letter-spacing: 0; }

.hint {
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 4px;
}
.hint a { color: var(--accent); }

/* ---- Buttons ---- */
button {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  border: none;
  border-radius: 8px;
  padding: 11px 18px;
  cursor: pointer;
  transition: transform 0.08s ease, opacity 0.15s ease;
}
button:disabled { opacity: 0.55; cursor: not-allowed; }
button:not(:disabled):active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  width: 100%;
}
.btn-primary:not(:disabled):hover { background: #244530; }

.btn-audio {
  background: var(--highlight-soft);
  color: #6b4a14;
  border: 1px solid var(--highlight);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-audio:not(:disabled):hover { background: var(--highlight); color: #2b1d04; }

.btn-toggle {
  background: var(--surface);
  border: 1px solid var(--rule);
  color: var(--ink-soft);
  padding: 10px 14px;
}

/* ---- Status ---- */
.status {
  font-family: var(--font-mono);
  font-size: 13px;
  margin-top: 12px;
  display: none;
}
.status.show { display: block; }
.status.loading { color: var(--ink-soft); }
.status.error { color: var(--danger); background: var(--danger-soft); padding: 10px 12px; border-radius: 8px; }
.status.ok { color: var(--accent); }

/* ---- Worksheet result card (signature element) ---- */
.worksheet {
  display: none;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-top: 3px dashed var(--highlight);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 18px;
  position: relative;
}
.worksheet.show { display: block; }

.worksheet .tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  background: var(--accent-soft);
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 16px;
}

.worksheet h3 {
  font-family: var(--font-display);
  font-size: 15px;
  margin: 22px 0 10px;
  color: var(--ink-soft);
}

.q-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 10px;
}
.q-item .qnum {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  background: var(--accent-soft);
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-top: 9px;
}
.q-item textarea { flex: 1; }

.audio-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
  align-items: center;
}

.site-footer {
  text-align: center;
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}

.site-footer .copyright {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 4px;
}

.site-footer .footer-note {
  font-size: 12px;
  color: var(--ink-soft);
  margin: 0;
}

@media (prefers-reduced-motion: reduce) {
  button { transition: none; }
}