/* qr.fsx.one — Stilistik analog s.fsx.one / admin.fsx.one. */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; overflow-x: hidden; max-width: 100%; }

:root,
[data-theme="dark"] {
  --bg:          #0d1117;
  --bg-card:     #1c2128;
  --bg-hover:    #21262d;
  --border:      #30363d;
  --text:        #e6edf3;
  --text-muted:  #8b949e;
  --text-link:   #58a6ff;
  --accent:      #388bfd;
  --success:     #3fb950;
  --warning:     #d29922;
  --danger:      #f85149;
  --radius:      8px;
}
[data-theme="light"] {
  --bg:          #f5f4ef;
  --bg-card:     #fdfcf8;
  --bg-hover:    #ebeae3;
  --border:      #d6d3c4;
  --text:        #1f2328;
  --text-muted:  #5e6470;
  --text-link:   #0969da;
  --accent:      #0969da;
  --success:     #1a7f37;
  --warning:     #9a6700;
  --danger:      #cf222e;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica,
               Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
  min-height: 100vh;
  display: flex; flex-direction: column;
}

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Skip-Link */
.skip-link {
  position: absolute; top: -100px; left: 8px; z-index: 1000;
  background: var(--accent); color: white;
  padding: 8px 14px; border-radius: var(--radius);
  text-decoration: none; font-weight: 600; font-size: 13px;
}
.skip-link:focus { top: 8px; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* Header */
.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 22px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.app-title { margin: 0; font-size: 18px; font-weight: 600; }
.theme-toggle {
  background: none; border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-muted); cursor: pointer; font-size: 14px;
  line-height: 1; padding: 4px 10px;
}
.theme-toggle:hover { color: var(--text); border-color: var(--text-muted); }
[data-theme="dark"]  .icon-sun  { display: inline; }
[data-theme="dark"]  .icon-moon { display: none;   }
[data-theme="light"] .icon-sun  { display: none;   }
[data-theme="light"] .icon-moon { display: inline; }

/* Layout */
.layout {
  flex: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 20px;
  max-width: 1100px; width: 100%;
  margin: 0 auto;
  padding: 24px 20px;
}
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; padding: 16px 12px; }
}

.form-card, .preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.form-card h2, .preview-card h2 {
  margin: 0 0 14px; font-size: 15px; font-weight: 600;
}
.section-title {
  margin: 18px 0 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 14px;
}
.section-title:first-of-type { border-top: none; padding-top: 0; }

fieldset.format-form {
  border: none; padding: 0; margin: 0 0 4px;
}

.field { margin-bottom: 12px; }
.field-row {
  display: grid; gap: 12px;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }
.field-row .field { margin-bottom: 0; }

.field label,
.check-label {
  display: block; font-size: 12px; color: var(--text-muted);
  margin-bottom: 4px;
}
.check-label { display: flex; gap: 6px; align-items: center; cursor: pointer; padding-top: 22px; }
.check-label input { margin: 0; }

.field input[type="text"],
.field input[type="url"],
.field input[type="email"],
.field input[type="tel"],
.field input[type="number"],
.field input[type="datetime-local"],
.field input[type="file"],
.field textarea,
.field select {
  width: 100%; padding: 8px 10px;
  background: var(--bg); color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font: inherit; font-size: 13px;
}
.field textarea {
  resize: vertical; min-height: 70px; line-height: 1.4;
  font-family: "SF Mono", "Cascadia Code", Menlo, monospace;
}
.field input[type="file"] {
  padding: 6px 10px; font-size: 12px;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent);
}

.hint {
  font-size: 11px; color: var(--text-muted); margin-top: 4px;
}

.color-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 480px) { .color-grid { grid-template-columns: 1fr; } }
.color-row {
  display: flex; gap: 8px; align-items: center;
}
.color-row input[type="color"] {
  width: 40px; height: 36px; padding: 0; border-radius: 4px;
  border: 1px solid var(--border); background: var(--bg); cursor: pointer;
}
.color-row input[type="text"] {
  flex: 1; font-family: "SF Mono", monospace; font-size: 12px;
}

.link-button {
  background: none; border: none; padding: 4px 0;
  color: var(--text-link); cursor: pointer; font-size: 12px;
  text-decoration: underline;
  text-decoration-color: rgba(88,166,255,.35);
}
.link-button:hover { text-decoration-color: var(--text-link); }

.contrast-warning {
  background: rgba(210,153,34,.12);
  color: var(--warning);
  border: 1px solid rgba(210,153,34,.35);
  border-left: 3px solid var(--warning);
  padding: 10px 14px; border-radius: 6px;
  font-size: 12px; line-height: 1.5;
  margin: 10px 0;
}

.preview-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  display: flex; align-items: center; justify-content: center;
  min-height: 320px;
}
#qr-preview {
  display: block; max-width: 100%; height: auto;
  background: #fff; padding: 8px; border-radius: 6px;
}

.download-row {
  display: flex; gap: 10px; margin-top: 14px;
}

.btn {
  display: inline-block; padding: 8px 16px;
  background: var(--bg-hover); color: var(--text);
  border: 1px solid var(--border); border-radius: var(--radius);
  font-size: 13px; cursor: pointer; text-decoration: none;
  font-family: inherit;
}
.btn:hover { background: var(--border); }
.btn-primary {
  background: var(--accent); color: white; border-color: var(--accent);
}
.btn-primary:hover { filter: brightness(1.1); }

footer {
  padding: 16px 24px; text-align: center;
  color: var(--text-muted); font-size: 11px;
  border-top: 1px solid var(--border);
}
footer a { color: var(--text-muted); text-decoration: none; }
footer a:hover { color: var(--text); }
footer span { margin: 0 8px; }