:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #18202a;
  --muted: #647282;
  --line: #d9e0e7;
  --primary: #176b87;
  --primary-dark: #0d4d63;
  --accent: #2f855a;
  --danger: #b42318;
  --shadow: 0 10px 24px rgba(20, 31, 43, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0;
}

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

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.15;
}

h2 {
  font-size: 17px;
}

p,
.label {
  color: var(--muted);
}

.status-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 16px;
}

.status-strip > div,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.status-strip > div {
  padding: 14px;
}

.label {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  text-transform: uppercase;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
}

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

textarea {
  resize: vertical;
}

select {
  min-height: 122px;
}

.check {
  flex-direction: row;
  align-items: center;
}

.check input {
  width: 18px;
  height: 18px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  border: 1px solid var(--primary);
  border-radius: 6px;
  background: var(--primary);
  color: #fff;
  cursor: pointer;
  font-weight: 700;
  min-height: 40px;
  padding: 9px 13px;
}

.button:hover {
  background: var(--primary-dark);
}

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

.button.secondary:hover {
  background: #e9f3f6;
}

.button.primary {
  min-width: 136px;
}

.result {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

#shortUrl {
  overflow-wrap: anywhere;
  color: var(--primary-dark);
  font-weight: 700;
}

.output-panel {
  margin-top: 16px;
}

pre {
  margin: 0;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: #111827;
  border-radius: 8px;
  color: #e5e7eb;
  min-height: 180px;
  padding: 14px;
}

.ok {
  color: var(--accent);
}

.bad {
  color: var(--danger);
}

@media (max-width: 820px) {
  .topbar,
  .grid {
    grid-template-columns: 1fr;
  }

  .topbar {
    align-items: stretch;
    flex-direction: column;
  }

  .status-strip {
    grid-template-columns: 1fr;
  }
}