@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');

/* ── Variables ── */
:root {
  --bg: #0a0a0a;
  --bg-2: #111111;
  --fg: #e8e8e8;
  --fg-mid: #999;
  --fg-dim: #999;
  --accent: #ff2d6d;
  --accent-dim: rgba(255, 45, 109, 0.12);
  --border: #222;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Base ── */
body {
  font-family: 'JetBrains Mono', monospace;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
header, main, footer {
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Header ── */
header {
  padding-top: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.logo::after {
  content: '_';
  animation: blink 1.2s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.barcode { display: none; }

/* ── Main ── */
main {
  flex: 1;
  padding-bottom: 4rem;
}

h1 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--fg);
  margin-bottom: 0.4rem;
}

h1::before {
  content: '// ';
  color: var(--accent);
  font-size: 0.9em;
}

.prompt {
  font-size: 0.78rem;
  color: var(--fg-dim);
  margin-bottom: 2.5rem;
}

/* ── Generator layout ── */
.generator {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* ── Controls ── */
.controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input[type="url"] {
  width: 100%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  padding: 0.7rem 1rem;
  outline: none;
  transition: border-color 0.15s;
}

input[type="url"]:focus {
  border-color: var(--accent);
}

input[type="url"]::placeholder {
  color: var(--fg-dim);
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  color: var(--fg-mid);
}

input[type="checkbox"] {
  accent-color: var(--accent);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

label { cursor: pointer; }

.btn-row {
  display: flex;
  gap: 0.6rem;
}

button {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  border: 1px solid var(--accent);
  transition: all 0.15s;
}

button:not(.secondary) {
  background: var(--accent);
  color: #0a0a0a;
}

button:not(.secondary):hover:not(:disabled) {
  background: transparent;
  color: var(--accent);
}

button.secondary {
  background: transparent;
  color: var(--accent);
}

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

button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  border-color: var(--border);
  color: var(--fg-dim);
  background: transparent;
}

.shortener-link {
  font-size: 0.72rem;
  color: var(--fg-dim);
}

/* ── Preview ── */
.preview {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

#qr-container {
  width: 100%;
  aspect-ratio: 1;
  background: var(--bg-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-dim);
  font-size: 0.75rem;
}

#qr-container svg {
  width: 100%;
  height: 100%;
}

.mode-label {
  font-size: 0.7rem;
  color: var(--fg-dim);
  letter-spacing: 0.05em;
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  font-size: 0.72rem;
  color: var(--fg-dim);
}

footer a { color: var(--fg-dim); }
footer a:hover { color: var(--accent); text-decoration: none; }

/* ── Responsive ── */
@media (max-width: 600px) {
  .generator { grid-template-columns: 1fr; }
  .preview { order: -1; }
  #qr-container { max-width: 280px; }
}