@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,600;1,9..40,400&display=swap");

:root {
  --bg: #0f1419;
  --surface: #1a2332;
  --border: #2d3a4d;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #3d9cf5;
  --accent-hover: #5eb0ff;
  --danger: #e85d5d;
  --success: #4caf7a;
  font-family: "DM Sans", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

header h1 {
  margin: 0 0 0.35rem;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  resize: vertical;
}

textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.actions {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.25rem;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
}

button:hover:not(:disabled) {
  background: var(--accent-hover);
}

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

button.secondary {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
}

button.secondary:hover:not(:disabled) {
  background: #243044;
}

button.danger {
  background: var(--danger);
}

.result {
  margin-top: 1.5rem;
  padding: 1rem;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: none;
}

.result.visible {
  display: block;
}

.result label {
  margin-top: 0.75rem;
}

.result label:first-child {
  margin-top: 0;
}

input[type="text"].link-field {
  width: 100%;
  padding: 0.65rem 0.85rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font: 0.9rem ui-monospace, monospace;
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

.msg {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  white-space: pre-wrap;
  word-break: break-word;
}

.msg.error {
  border-color: var(--danger);
  color: #ffb4b4;
}

.msg.success {
  border-color: var(--success);
}

.center-actions {
  margin-top: 1.5rem;
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
}