* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: #fff;
  color: #111;
  font-size: 14px;
}

.container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 40px 24px;
}

.title {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.5px;
  margin-bottom: 32px;
  color: #111;
}

.form {
  width: 100%;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field label {
  font-size: 12px;
  font-weight: 500;
  color: #555;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.optional {
  font-weight: 400;
  color: #aaa;
  text-transform: none;
  letter-spacing: 0;
}

input[type="url"],
input[type="text"] {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  font-size: 14px;
  color: #111;
  background: #fff;
  outline: none;
  transition: border-color 150ms;
}

input[type="url"]:focus,
input[type="text"]:focus {
  border-color: #111;
}

input::placeholder {
  color: #bbb;
}

button[type="button"] {
  padding: 10px 16px;
  background: #111;
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 150ms;
}

button[type="button"]:hover {
  opacity: 0.75;
}

.result {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid #e0e0e0;
  border-radius: 6px;
  font-size: 13px;
  color: #111;
  background: #fafafa;
}

.result span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-btn {
  flex-shrink: 0;
  padding: 4px 10px;
  background: transparent;
  color: #555;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 12px;
  cursor: pointer;
  transition: all 150ms;
}

.copy-btn:hover {
  background: #111;
  color: #fff;
  border-color: #111;
}

.error {
  font-size: 13px;
  color: #c00;
  padding: 2px 0;
}