:root {
  --bg: #f7f5ef;
  --card: #ffffff;
  --text: #1f2a24;
  --muted: #5b6a61;
  --line: #dcd8cc;
  --accent: #2f6b4f;
  --accent-soft: #e4efe8;
  --warn-bg: #fff4e5;
  --warn-line: #e0a458;
  --error: #b3261e;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #141a17;
    --card: #1c2420;
    --text: #e8ece9;
    --muted: #a3b0a8;
    --line: #34413a;
    --accent: #7fc4a0;
    --accent-soft: #23332b;
    --warn-bg: #33291a;
    --warn-line: #b8843f;
    --error: #f2b8b5;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

header.site {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 24px;
}

header.site a {
  color: var(--accent);
  font-weight: 700;
  font-size: 20px;
  text-decoration: none;
}

h1 { font-size: 28px; line-height: 1.25; margin: 0 0 12px; }
h2 { font-size: 20px; margin: 0 0 4px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }

.notice {
  background: var(--warn-bg);
  border-left: 4px solid var(--warn-line);
  padding: 12px 16px;
  border-radius: 6px;
  margin: 16px 0 24px;
}

fieldset {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px 16px;
  margin: 0 0 20px;
}

legend { padding: 0 6px; font-weight: 700; color: var(--accent); }

.field { margin: 16px 0 0; }
.field > label, .field > .label { display: block; font-weight: 600; margin-bottom: 4px; }
.hint { display: block; color: var(--muted); font-size: 15px; margin-bottom: 6px; font-weight: 400; }
.req { color: var(--accent); }

input[type="text"], input[type="email"], input[type="tel"], input[type="date"],
input[type="number"], select, textarea {
  width: 100%;
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
}

textarea { min-height: 110px; resize: vertical; }

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

.choices { display: grid; gap: 6px; }
.choices label { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; }
.choices input { margin-top: 5px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }

.two { display: grid; gap: 0 12px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .two { grid-template-columns: 1fr 1fr; } }

.hp { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }

.error-text { color: var(--error); font-size: 15px; margin-top: 4px; display: none; }
.has-error .error-text { display: block; }
.has-error input, .has-error select, .has-error textarea { border-color: var(--error); }

#form-status { margin: 12px 0; color: var(--error); font-weight: 600; }

button {
  font: inherit;
  font-weight: 700;
  background: var(--accent);
  color: var(--card);
  border: 0;
  border-radius: 8px;
  padding: 14px 22px;
  cursor: pointer;
  width: 100%;
}

button[disabled] { opacity: 0.6; cursor: wait; }

details.privacy {
  background: var(--accent-soft);
  border-radius: 8px;
  padding: 12px 16px;
  margin-top: 12px;
}

details.privacy summary { cursor: pointer; font-weight: 600; }
details.privacy p, details.privacy ul { font-size: 15px; }