:root {
  color-scheme: light;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  background: #f6f4f1;
  color: #1c1c1c;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top left, #fff4e6, #f6f4f1 45%, #efeae5 100%);
}

main {
  max-width: 960px;
  margin: 0 auto;
  padding: 48px 20px 32px;
}

header {
  display: grid;
  gap: 12px;
  margin-bottom: 24px;
}

h1 {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin: 0;
}

p {
  margin: 0;
  line-height: 1.5;
}

form {
  display: grid;
  gap: 12px;
  margin: 20px 0 16px;
}

input[type="url"] {
  padding: 12px 16px;
  font-size: 1rem;
  border-radius: 8px;
  border: 1px solid #c9c2bc;
  background: #fff;
}

button {
  justify-self: start;
  padding: 10px 16px;
  border-radius: 999px;
  border: none;
  background: #1c1c1c;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
  margin: 12px 0 0;
}

.open-link {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid #1c1c1c;
  color: #1c1c1c;
  text-decoration: none;
  font-weight: 600;
}

.open-link[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.viewer__note {
  padding: 16px;
  color: #4b4742;
  background: #fff;
  border-radius: 12px;
  border: 1px dashed #d4c9bf;
}

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

.output {
  background: #fff;
  border-radius: 12px;
  padding: 12px 16px;
  border: 1px solid #ddd6cf;
  font-size: 0.95rem;
  word-break: break-all;
}

.viewer {
  margin-top: 24px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid #ddd6cf;
  min-height: 380px;
}

.viewer iframe {
  width: 100%;
  height: 70vh;
  border: 0;
  display: block;
  background: #fff;
}

.viewer--empty iframe {
  display: none;
}

.viewer:not(.viewer--empty) .viewer__note {
  display: none;
}