/*
Theme Name: Zadani Trenazher
Description: Черновик банка заданий: предмет, карточки заданий, раскрытие решения и проверка ответа.
Version: 1.0.0
Text Domain: zadani-trenazher
*/

:root {
  --ink: #17202a;
  --muted: #5b6773;
  --line: #dde3e9;
  --bg: #f5f7fa;
  --card: #ffffff;
  --brand: #1f6feb;
  --brand-dark: #1550b3;
  --ok: #1a7f37;
  --ok-bg: #e8f5ec;
  --no: #b42318;
  --no-bg: #fdecea;
  --max: 880px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

a { color: var(--brand); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

.site-head {
  background: #fff;
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}

.site-head .brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-weight: 700;
  font-size: 20px;
}

.site-head .brand span { font-weight: 400; color: var(--muted); font-size: 14px; }

.crumbs { font-size: 14px; color: var(--muted); margin: 22px 0 6px; }

.page-title { font-size: 28px; line-height: 1.25; margin: 4px 0 6px; }

.page-sub { color: var(--muted); margin: 0 0 26px; }

.zadani-list { display: grid; gap: 16px; margin: 0 0 40px; }

.zadani-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 20px 22px;
}

.zadani-num {
  font-size: 13px;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.zadani-text { margin: 0 0 14px; }
.zadani-text p:first-child { margin-top: 0; }
.zadani-text p:last-child { margin-bottom: 0; }

.zadani-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
}

.zadani-label { font-weight: 600; }

.zadani-input {
  flex: 1 1 240px;
  min-width: 140px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 16px;
}

.zadani-input:focus { outline: 2px solid #cfe0ff; border-color: var(--brand); }

.zadani-button {
  padding: 9px 18px;
  border: 1px solid var(--brand);
  border-radius: 8px;
  background: var(--brand);
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

.zadani-button:hover { background: var(--brand-dark); border-color: var(--brand-dark); }

.zadani-button-ghost { background: #fff; color: var(--brand); }
.zadani-button-ghost:hover { background: #f0f5ff; }

.zadani-verdict {
  display: inline-block;
  margin: 0 0 12px;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 600;
}

.zadani-verdict.is-ok { color: var(--ok); background: var(--ok-bg); }
.zadani-verdict.is-no { color: var(--no); background: var(--no-bg); }

.zadani-spoilers { display: grid; gap: 8px; margin-top: 6px; }

.zadani-details {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 10px 14px;
  background: #fbfcfe;
}

.zadani-details summary {
  cursor: pointer;
  color: var(--brand);
  font-weight: 600;
}

.zadani-solution { margin-top: 10px; color: var(--ink); }
.zadani-solution p { margin: 0 0 8px; }

.site-foot {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  padding: 22px 0 40px;
}

@media (max-width: 600px) {
  .page-title { font-size: 23px; }
  .zadani-card { padding: 16px; }
  .zadani-button { flex: 1 1 120px; }
}