:root {
  color-scheme: light;
  --bg: #f3f2fb;
  --card-bg: #ffffff;
  --text: #221f36;
  --muted: #6b6785;
  --border: #ddd8f2;
  --accent: #4c3fa6;
  --accent-hover: #40358e;
  --accent-contrast: #ffffff;
  --accent-soft: #ece9fb;
  --error: #c0392b;
  --warning-bg: #fff4d6;
  --warning-border: #f0c454;
  --warning-text: #7a5900;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 16px 80px;
}

.page-header h1 { font-size: 1.5rem; margin-bottom: 4px; }
.muted { color: var(--muted); font-size: 0.92rem; }

.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 3px rgba(76, 63, 166, 0.06);
}

.card h2 { font-size: 1.05rem; margin-top: 0; color: var(--accent); }
.card h3 { font-size: 0.95rem; margin: 0; }

.field { display: block; margin-bottom: 14px; }
.field-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; }

input[type="text"],
input[type="email"],
input[type="date"],
input[type="number"],
select {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.95rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
}

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

input[readonly] {
  background: #f1f0f7;
  color: var(--muted);
  cursor: default;
}
input[readonly]:focus { outline: none; border-color: var(--border); }

.hint { display: block; font-size: 0.78rem; color: var(--muted); margin-top: 3px; }
.error { display: block; font-size: 0.8rem; color: var(--error); margin-top: 3px; min-height: 0; }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 560px) {
  .grid-2 { grid-template-columns: 1fr; }
}

.radio-group { display: flex; flex-direction: column; gap: 8px; }
.radio-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.radio-option:has(input:checked) {
  border-color: var(--accent);
  background: var(--accent-soft);
}
/* .radio-option задаёт display:flex, что перебивает браузерное [hidden]{display:none} —
   без этого правила элементы с hidden оставались бы видимыми. */
.radio-option[hidden] { display: none; }
.not-ru-citizen-option { margin-bottom: 14px; }
.not-ru-citizen-option .hint { margin-top: 4px; }
.radio-option input { margin-top: 3px; accent-color: var(--accent); }

.btn {
  display: inline-block;
  padding: 12px 20px;
  border-radius: 8px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
}
.btn-primary { background: var(--accent); color: var(--accent-contrast); width: 100%; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--accent-soft); color: var(--accent); }
.btn-danger { background: #fdecea; color: var(--error); }
.btn-large { padding: 18px 24px; font-size: 1.15rem; margin-top: 4px; }
.btn-small { padding: 6px 12px; font-size: 0.82rem; }

.submit-row { position: sticky; bottom: 0; padding: 12px 0; }

.track-card { background: #faf9ff; }
.track-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.chip-input {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  background: #fff;
}
.chip-input .chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 4px; }
.chip-input .chips:empty { margin-bottom: 0; }
.chip {
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 6px;
}
.chip button {
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1;
  color: var(--muted);
  padding: 0;
}
.chip-input input {
  border: none;
  width: 100%;
  padding: 6px 4px;
}
.chip-input input:focus { outline: none; }

.field.money-field[hidden] { display: none; }

#success-panel { text-align: center; }

.warning-callout {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: var(--warning-text);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.4;
}

.success-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
  text-align: left;
}
.success-item h3 { font-size: 0.95rem; margin: 0 0 8px; }
.success-item .btn { display: block; margin: 8px 0 0; }

.coauthor-block { margin-bottom: 16px; }
.coauthor-block .track-header { margin-bottom: 10px; }