:root {
  color-scheme: light;
  --bg: #f5f6fb;
  --card: #ffffff;
  --line: #d6dae7;
  --ink: #1f2937;
  --muted: #5f6b7a;
  --accent: #0f766e;
  --accent-weak: #ccfbf1;
  --mono-bg: #f1f5f9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans", sans-serif;
  background: radial-gradient(circle at top right, #dff7ef 0%, var(--bg) 45%);
  color: var(--ink);
}

.layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 6px 22px rgba(2, 8, 23, 0.05);
}

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

.lead {
  margin: 0 0 14px;
  color: var(--muted);
}

.form {
  display: grid;
  gap: 12px;
}

.form-section {
  margin-top: 6px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.form-section .hint {
  margin: 0;
}

label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--muted);
}

.checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 600;
}

.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

.field-locked {
  opacity: 0.58;
}

.field-locked::after {
  content: "locked by checkbox";
  justify-self: end;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: #64748b;
}

.field-locked input:disabled {
  background: #e5e7eb;
  color: #64748b;
  border-color: #cbd5e1;
  cursor: not-allowed;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

textarea {
  resize: vertical;
}

details {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: #fcfefe;
}

summary {
  cursor: pointer;
  color: #065f46;
  margin-bottom: 10px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

button {
  border: 0;
  border-radius: 8px;
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  color: #fff;
  background: var(--accent);
  cursor: pointer;
}

button:hover {
  filter: brightness(1.07);
}

.save-message {
  margin: 12px 0 0;
  min-height: 20px;
  color: #065f46;
  font-weight: 600;
}

.hint {
  margin: 0 0 10px;
  color: var(--muted);
}

.mono {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--mono-bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  font-family: Consolas, "Courier New", monospace;
  font-size: 13px;
}

.logs {
  max-height: 280px;
  overflow: auto;
}

@media (max-width: 720px) {
  .layout {
    padding: 12px;
  }

  .card {
    padding: 14px;
  }
}