:root {
  --bg: #0b0f14;
  --card: #121821;
  --text: #e6ecf2;
  --muted: #9fb0c0;
  --accent: #4fd1c5;
  --accent-2: #7aa2f7;
  --border: #1f2a37;
  color-scheme: light dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7fafc;
    --card: #ffffff;
    --text: #0b0f14;
    --muted: #4a5568;
    --border: #e2e8f0;
  }
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
}
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell,
    "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.container {
  width: min(1100px, 92vw);
  margin-inline: auto;
  padding: 1.2rem 0;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand {
  font-size: 1.6rem;
  letter-spacing: 0.2px;
  margin: 0;
}
.brand span {
  color: var(--accent);
}
.nav-link {
  color: var(--text);
  text-decoration: none;
  opacity: 0.9;
  margin-right: 1rem;
}
.nav-link:hover {
  color: var(--accent-2);
}
.hero {
  margin: 1rem 0 1.25rem;
}
.hero h2 {
  margin: 0 0 0.25rem;
  font-weight: 700;
}
.hero p {
  margin: 0;
  color: var(--muted);
}
.tool {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}
@media (min-width: 960px) {
  .tool {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}
.grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.grid .full {
  grid-column: 1 / -1;
}
label span {
  display: block;
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}
input,
select,
textarea,
button {
  font: inherit;
  color: var(--text);
}
input[type="text"],
input[type="tel"],
input[type="email"],
input[type="number"],
input[type="color"],
input[type="range"],
select,
textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}
input:focus,
select:focus,
textarea:focus {
  border-color: var(--accent-2);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--accent-2), transparent 75%);
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.6rem;
}
button {
  padding: 0.7rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, #1b2430, #141a23);
  cursor: pointer;
}
button:hover {
  border-color: var(--accent);
}
button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
button.secondary {
  background: transparent;
}
.preview {
  display: grid;
  place-items: center;
  min-height: 380px;
}
.qrcode {
  display: inline-block;
  padding: 0.5rem;
  background: #fff;
  border-radius: 8px;
}
.hidden {
  display: none !important;
}
.faq details {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.8rem 1rem;
  background: var(--card);
}
.faq details + details {
  margin-top: 0.6rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
}
.site-footer {
  color: var(--muted);
  text-align: center;
  margin-top: 1rem;
}