:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #18202b;
  --muted: #5d6876;
  --line: #d9dee7;
  --accent: #0969da;
  --accent-dark: #0757b8;
  --success: #176b3a;
  --error: #b42318;
  --code: #101828;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, Segoe UI, Roboto, Arial, sans-serif;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 32px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  font-weight: 700;
}

h2 {
  font-size: 20px;
}

h3 {
  margin-top: 22px;
  margin-bottom: 10px;
  font-size: 15px;
}

p {
  margin-top: 6px;
  color: var(--muted);
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 24px auto 48px;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.tab,
button {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 14px;
  background: var(--panel);
  color: var(--text);
  font-weight: 650;
  cursor: pointer;
}

.tab.is-active,
button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #ffffff;
}

button:hover {
  border-color: var(--accent-dark);
}

.panel {
  display: none;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.panel.is-active {
  display: block;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 20px;
}

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

.device-picker {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  align-items: end;
  gap: 10px;
}

.device-results {
  display: grid;
  gap: 10px;
  align-content: start;
}

.device-results-summary {
  border-left: 4px solid var(--accent);
  padding: 10px 12px;
  background: #eef5ff;
  color: var(--text);
  font-size: 13px;
}

.device-results.is-error .device-results-summary {
  border-left-color: var(--error);
  background: #fff1f0;
  color: var(--error);
}

.device-result-list {
  display: grid;
  gap: 8px;
}

.device-result {
  display: grid;
  justify-items: start;
  gap: 4px;
  min-height: 56px;
  text-align: left;
}

.device-result small {
  color: var(--muted);
  font-weight: 500;
}

.grid-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(240px, 1fr));
  gap: 16px;
}

label,
.wide-label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

input,
select {
  width: 100%;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 10px;
  background: #ffffff;
  color: var(--text);
  font: inherit;
}

input:focus,
select:focus {
  outline: 2px solid rgba(9, 105, 218, 0.22);
  border-color: var(--accent);
}

.result-summary {
  margin: 18px 0;
  border-left: 4px solid var(--accent);
  padding: 12px 14px;
  background: #eef5ff;
  color: var(--text);
}

.result-summary.is-error {
  border-left-color: var(--error);
  background: #fff1f0;
  color: var(--error);
}

.status-badge {
  min-width: 116px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 12px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.status-badge.is-success {
  border-color: rgba(23, 107, 58, 0.35);
  background: #eaf7ef;
  color: var(--success);
}

details {
  margin-top: 14px;
}

summary {
  cursor: pointer;
  color: var(--muted);
  font-weight: 650;
}

pre {
  max-height: 420px;
  overflow: auto;
  border-radius: 8px;
  padding: 16px;
  background: var(--code);
  color: #e6edf3;
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

#launchUrlContainer {
  margin: 14px 0;
}

@media (max-width: 720px) {
  .app-header,
  .panel-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid-form {
    grid-template-columns: 1fr;
  }

  .device-picker {
    grid-template-columns: 1fr;
  }

  main {
    width: min(100% - 20px, 1180px);
  }
}