/* Artistic QR Code Generator — page styles.
   Extracted from templates/index.html (was an inline <style> block). */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0f1117;
  --card: #1a1d27;
  --border: #2a2d3a;
  --text: #e2e4ed;
  --muted: #8b8fa3;
  --accent: #6c7cff;
  --accent-hover: #5568e6;
  --danger: #ff6b6b;
  --radius: 10px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  width: 100%;
  max-width: 480px;
  padding: 2rem;
}

h1 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 1.75rem;
  line-height: 1.5;
}

.field { margin-bottom: 1.25rem; }

label {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 0.4rem;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="date"],
input[type="time"],
select,
input[type="number"],
input[type="range"],
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
  color-scheme: dark; /* native date/time pickers match the dark theme */
}

textarea { resize: vertical; min-height: 4.5rem; font-family: inherit; }

input[type="text"]:focus,
input[type="email"]:focus,
input[type="url"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
select:focus,
textarea:focus {
  border-color: var(--accent);
}

/* file input */
.file-drop {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.file-drop:hover,
.file-drop:focus-within {
  border-color: var(--accent);
  background: rgba(108, 124, 255, 0.05);
}
.file-drop input[type="file"] {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.82rem;
  color: var(--muted);
}
.file-hint { font-size: 0.85rem; color: var(--muted); }

/* advanced toggle */
.advanced-toggle {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.82rem;
  cursor: pointer;
  padding: 0.25rem 0;
  margin-bottom: 0.75rem;
}
.advanced-toggle:hover { text-decoration: underline; }

.advanced { display: none; }
.advanced.open { display: block; }
.adv-hint {
  font-size: 0.72rem;
  color: var(--muted);
  margin: 0.35rem 0 0.45rem;
  line-height: 1.45;
}

/* segmented toggle (radio buttons styled as a two-option switch) */
.seg { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.seg input[type="radio"] { position: absolute; opacity: 0; pointer-events: none; }
.seg label {
  flex: 1;
  text-align: center;
  padding: 0.55rem 0.75rem;
  font-size: 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  color: var(--muted);
  user-select: none;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.seg label:hover { border-color: var(--accent); }
.seg input:checked + label {
  background: rgba(108, 124, 255, 0.15);
  border-color: var(--accent);
  color: var(--text);
}
.seg input:focus-visible + label { outline: 2px solid var(--accent); outline-offset: 2px; }

/* [hidden] must beat explicit display rules (e.g. .field-grid { display: grid }) */
[hidden] { display: none !important; }

/* per-mode field groups (URL / vCard / map pin) */
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.6rem 0.75rem; }
.field-grid label { margin-bottom: 0.3rem; }

/* calendar time rows: hour : minute + AM/PM segmented toggle */
.time-row { display: flex; align-items: center; gap: 0.4rem; margin-bottom: 0.5rem; }
.time-row select { width: auto; min-width: 4.6rem; }
.time-row span:not(.seg) { color: var(--muted); font-weight: 700; }
.time-row .seg { flex: 1; }

.row { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }

/* range slider */
.range-wrap { display: flex; align-items: center; gap: 0.5rem; }
.range-wrap input[type="range"] { flex: 1; }
.range-val {
  font-size: 0.8rem;
  min-width: 2.5rem;
  text-align: right;
  color: var(--muted);
}

/* button */
.btn {
  display: block;
  width: 100%;
  padding: 0.75rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 0.5rem;
}
.btn:hover { background: var(--accent-hover); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* fixed QR frame + movable image preview */
.crop-wrap {
  position: relative;
  display: block;
  width: min(100%, 340px);   /* stable size — must NOT depend on content,
                                or the readout text changing on mode switch
                                would resize the frame out from under the img */
  margin-top: 0.5rem;
}
.qr-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;          /* the QR code area is always a square */
  background: #fff;             /* letterbox bands (default view) + margins when zoomed out */
  border-radius: 6px;
  overflow: hidden;
  cursor: grab;
  touch-action: none;
}
.qr-frame.dragging { cursor: grabbing; }
.qr-frame img {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 0 0;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
  pointer-events: none;         /* the frame receives all gestures */
}
/* NOTE: no brightness/saturation filter here — dimming the preview in one
   mode made it look like the image changed when toggling modes.  The
   cursor change (grab -> default) is enough to signal non-interactivity. */

/* empty state shown before an image has been loaded, so the frame reads as
   "nothing here yet" instead of a broken <img> placeholder */
.qr-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 1rem;
  text-align: center;
  color: #98a0b3;
  font-size: 0.82rem;
  pointer-events: none;
}
.qr-placeholder small { font-size: 0.72rem; color: #aab1c4; line-height: 1.4; }
.crop-wrap.has-image .qr-placeholder { display: none; }
.crop-wrap:not(.has-image) .qr-frame img { display: none; }
.crop-wrap:not(.has-image) .qr-frame { cursor: default; }

.frame-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 0.45rem;
}
.tool-btn {
  width: 1.7rem;
  height: 1.7rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.tool-btn:hover { border-color: var(--accent); background: rgba(108, 124, 255, 0.08); }
.tools-readout { font-size: 0.78rem; color: var(--muted); flex: 1; text-align: center; }
.tool-link {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 0;
}
.tool-link:hover { text-decoration: underline; }
/* greyed-out state for the view controls before an image has been loaded */
.tool-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.tool-btn:disabled:hover { border-color: var(--border); background: var(--bg); }
.tool-link:disabled { opacity: 0.35; cursor: not-allowed; text-decoration: none; }

.crop-hint {
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 0.45rem;
}

/* reset to defaults */
.btn-reset {
  display: block;
  width: 100%;
  padding: 0.6rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.btn-reset:hover { border-color: var(--accent); background: rgba(108, 124, 255, 0.08); }

/* flash messages */
.flash {
  padding: 0.7rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  line-height: 1.5;
}
.flash.error {
  background: rgba(255, 107, 107, 0.1);
  border: 1px solid rgba(255, 107, 107, 0.3);
  color: var(--danger);
}

/* status */
.status {
  text-align: center;
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  display: none;
}
.status.show { display: block; }

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 0.4rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* result area */
.result-area {
  display: none;
  margin-top: 1.25rem;
  text-align: center;
}
.result-area.show { display: block; }
.result-area img {
  max-width: 100%;
  border-radius: 6px;
  border: 1px solid var(--border);
}
.result-actions {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
  justify-content: center;
}
.btn-download {
  display: inline-block;
  padding: 0.55rem 1.2rem;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: background 0.2s;
}
.btn-download:hover { background: var(--accent-hover); }

/* dense-code warnings: live payload counter + note under the image */
.size-warn { color: #fbbf24; }
.version-note {
  margin-top: 0.75rem;
  max-width: 460px;
  margin-left: auto;
  margin-right: auto;
  font-size: 0.8rem;
  line-height: 1.45;
  color: #fbbf24;
}

/* capacity guide dropdown (Advanced settings) */
.cap-guide summary { cursor: pointer; color: var(--accent); font-weight: 600; }
.cap-table { width: 100%; border-collapse: collapse; margin-top: 0.5rem; font-size: 0.78rem; }
.cap-table th, .cap-table td { padding: 0.2rem 0.45rem; text-align: right; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.cap-table th:first-child, .cap-table td:first-child { text-align: left; }
.cap-table tr.dense-row td { color: #fbbf24; }

/* version lockout: grey out versions that can't hold the current payload */
select option:disabled { color: #565d70; cursor: not-allowed; }