:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --text: #1b2430;
  --muted: #6b7280;
  --line: #dbe2ea;
  --accent: #0f766e;
  --danger: #b42318;
  --warn-bg: #fff1f1;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background: radial-gradient(circle at top left, #e7f5f3, var(--bg) 45%);
  color: var(--text);
}

.app {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px;
  display: grid;
  gap: 16px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr 1fr;
}

h1, h2 { margin: 0 0 10px; }

ul { padding-left: 18px; margin: 0; }
li + li { margin-top: 8px; }

input, select, button {
  width: 100%;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  margin-bottom: 10px;
  background: #fff;
}

button {
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
}

button.danger {
  background: var(--danger);
  width: auto;
  padding: 6px 10px;
  margin: 0 0 0 8px;
}

.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
}

.member-row {
  display: grid;
  grid-template-columns: 1fr auto auto auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

.chip {
  font-size: 12px;
  color: var(--muted);
}

.positive { color: #0a7d2a; }
.negative { color: #b42318; }

.warn {
  color: var(--danger);
  background: var(--warn-bg);
  border: 1px solid #f5c2c7;
  border-radius: 8px;
  padding: 8px;
}

#participantsField {
  border: 1px dashed var(--line);
  border-radius: 10px;
  padding: 8px;
  margin-bottom: 10px;
}

#participantsField label {
  display: block;
  margin-bottom: 6px;
}

@media (max-width: 900px) {
  .grid { grid-template-columns: 1fr; }
}