:root {
  --bg: #f2f5f9;
  --card: #ffffff;
  --text: #10243d;
  --muted: #4d617a;
  --primary: #0f6bdc;
  --border: #d5deea;
  --danger: #b11f40;
}

* {
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  margin: 0;
  background: radial-gradient(circle at top right, #dcecff 0, var(--bg) 45%);
  color: var(--text);
}

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: 24px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 8px 26px rgba(8, 28, 51, 0.05);
  margin-bottom: 16px;
}

.hidden {
  display: none;
}

h1,
h2,
h3 {
  margin: 0 0 10px;
}

label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
}

input,
select,
textarea,
button {
  width: 100%;
  margin-top: 6px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 10px;
  font-size: 14px;
}

button {
  cursor: pointer;
  font-weight: 700;
  background: #edf1f8;
  color: var(--text);
}

button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

button.primary {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

button.link {
  width: auto;
  border: none;
  background: transparent;
  color: var(--primary);
  padding: 0;
}

.row {
  display: flex;
  gap: 10px;
}

.row.spread {
  justify-content: space-between;
  align-items: center;
}

.muted {
  color: var(--muted);
}

.status {
  color: var(--muted);
  border-radius: 10px;
  padding: 8px 10px;
  background: #eef3fa;
  border: 1px solid #d6e2f3;
}

.status[data-kind="ok"] {
  color: #155724;
  background: #e8f7ec;
  border-color: #bce6c7;
}

.status[data-kind="error"] {
  color: #7f1d1d;
  background: #fdebec;
  border-color: #f5c7cb;
}

.error {
  color: var(--danger);
  min-height: 20px;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 13px;
}

th,
td {
  border: 1px solid var(--border);
  padding: 8px;
  text-align: left;
}

@media (max-width: 720px) {
  .app {
    padding: 14px;
  }
  .row {
    flex-direction: column;
  }
}