* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #f4f6f8;
  color: #1a1a1a;
}

main {
  max-width: 640px;
  margin: 40px auto;
  padding: 24px;
}

header h1 {
  margin: 0 0 4px;
  font-size: 22px;
}

.muted {
  color: #666;
  font-size: 13px;
}

form {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  display: grid;
  gap: 14px;
  margin-top: 16px;
}

.session-help {
  background: #f7f9fc;
  border: 1px solid #e3e8ef;
  border-radius: 8px;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.session-help h2 {
  margin: 0;
  font-size: 15px;
}

.session-help ol {
  margin: 0;
  padding-left: 18px;
  font-size: 13px;
  color: #444;
  display: grid;
  gap: 4px;
}

.code-block {
  margin: 0;
  background: #1a1a1a;
  color: #f5f5f5;
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 12px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

label {
  display: grid;
  gap: 4px;
}

label > span {
  font-size: 13px;
  font-weight: 600;
}

input[type="text"],
input[type="password"],
input[type="url"] {
  padding: 8px 10px;
  border: 1px solid #d0d4d9;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
}

input[type="file"] {
  font-size: 13px;
}

input:focus {
  outline: none;
  border-color: #0070d2;
  box-shadow: 0 0 0 3px rgba(0,112,210,0.15);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 4px;
}

button {
  appearance: none;
  border: 1px solid #0070d2;
  background: #0070d2;
  color: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

button[type="button"] {
  background: #fff;
  color: #0070d2;
}

.link-btn {
  border: none;
  background: none;
  color: #0070d2;
  padding: 0;
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
}

.panel {
  margin-top: 16px;
  background: #fff;
  border-radius: 8px;
  padding: 16px 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  font-size: 14px;
}

.panel.hidden { display: none; }

.panel.error {
  background: #fff5f5;
  border-left: 4px solid #c91f1f;
  color: #6a1212;
}

.panel.ok {
  background: #f1faf4;
  border-left: 4px solid #2e8540;
  color: #194c25;
}

.panel.info {
  border-left: 4px solid #0070d2;
}

.panel h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.panel pre {
  background: #f4f6f8;
  padding: 10px;
  border-radius: 6px;
  font-size: 12px;
  max-height: 240px;
  overflow: auto;
}

.kv {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 4px 12px;
}

code {
  background: #eef1f5;
  padding: 1px 4px;
  border-radius: 3px;
  font-size: 12px;
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid #d0d4d9;
  border-top-color: #0070d2;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.monitor {
  margin-top: 32px;
}

.monitor h2 {
  margin: 0 0 4px;
  font-size: 18px;
}

.monitor-form {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.06);
  display: grid;
  gap: 14px;
  margin-top: 12px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: normal;
  cursor: pointer;
}

.progress-bar {
  height: 8px;
  background: #eef1f5;
  border-radius: 4px;
  overflow: hidden;
  margin: 10px 0 4px;
}

.progress-bar > span {
  display: block;
  height: 100%;
  background: #0070d2;
  border-radius: 4px;
  transition: width 0.3s ease;
}