:root {
  --primary: #8B1A2B;
  --primary-hover: #721524;
  --primary-light: #fdf2f4;
  --accent: #A52A3A;
  --dark: #0e1111;
  --text: #111827;
  --muted: #6b7280;
  --bg: #f9fafb;
  --panel: #ffffff;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --radius: 12px;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 18px rgba(17,24,39,.06);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }

/* Rešpektuj HTML `hidden` atribút — bez toho class-selektory s display prevážia. */
[hidden] { display: none !important; }

/* Zabráň horizontálnemu scrollu — akýkoľvek prvok v grid/flex, ktorý sa nevie zmestiť, by inak roztiahol layout. */
html, body { overflow-x: hidden; max-width: 100%; }
img, canvas, svg, video { max-width: 100%; }
input, button, select, textarea, fieldset { min-width: 0; max-width: 100%; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Sticky-footer cez flex layout — footer vždy pri spodnej hrane. */
body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}
main { flex: 1 0 auto; }
footer { flex-shrink: 0; }

header {
  padding: 0;
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
  position: sticky; top: 0; z-index: 10;
}
.brand {
  display: flex; align-items: center; gap: .75rem;
  max-width: 1600px; margin: 0 auto;
  /* Horizontálny padding zladený s main, aby logo bolo v rovnakej vertikálnej línii ako obsah. */
  padding: .85rem 1.25rem;
  width: 100%;
}
@media (max-width: 960px) { .brand { padding: .75rem .85rem; } }
.logo-dot {
  width: 32px; height: 32px; border-radius: 8px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: .75rem; letter-spacing: .05em;
}
.logo-dot::before { content: 'MS'; }
header h1 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--dark);
}
header p { margin: 0; color: var(--muted); font-size: .8rem; }

main {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 1.25rem;
  padding: 1.25rem;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}
/* Náhľad vľavo, editácia vpravo. */
.panel--preview { order: 1; }
.panel--inputs  { order: 2; }

@media (max-width: 960px) {
  main { grid-template-columns: 1fr; gap: 1rem; padding: .85rem; }
  .panel { padding: 1rem; }
  header { padding: .75rem 1rem; }
  /* Na mobile daj náhľad nad vstupy, aby bol hneď viditeľný. */
  .panel--preview { order: 1; }
  .panel--inputs  { order: 2; }
}
@media (max-width: 480px) {
  html, body { font-size: 14px; }
  input[type="text"], input[type="file"] { font-size: 16px; } /* zakáž iOS auto-zoom */
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  min-width: 0;  /* grid/flex child default je auto — to pretiahne bunku. */
}
.panel--inputs { display: flex; flex-direction: column; gap: 1rem; }

.field { display: flex; flex-direction: column; gap: .4rem; }
.field label {
  font-weight: 500; font-size: .8rem; color: #374151;
  display: flex; align-items: center; gap: .5rem;
}
.val {
  margin-left: auto;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  font-weight: 500;
}

input[type="text"], input[type="file"] {
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  padding: .6rem .8rem;
  font: inherit;
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
}
input[type="text"]:focus, input[type="file"]:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139,26,43,.12);
}
input[type="file"] { padding: .45rem; cursor: pointer; }

input[type="range"] { width: 100%; accent-color: var(--primary); }
input[type="checkbox"], input[type="radio"] { accent-color: var(--primary); }

.hint { margin: 0; color: var(--muted); font-size: .75rem; }

.group {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .85rem 1rem 1rem;
  margin: 0;
  display: flex; flex-direction: column; gap: .55rem;
  background: #fcfcfd;
}
.group legend {
  padding: 0 .4rem;
  font-size: .7rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.group .row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.group .row.radios label {
  display: flex; align-items: center; gap: .35rem;
  font-size: .82rem; color: #374151;
  padding: .3rem .65rem;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  cursor: pointer;
  background: #fff;
  transition: border-color .15s, background .15s;
  white-space: nowrap;
}
.group .row.radios label:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-light);
  color: var(--primary);
}

.btn {
  border: 0;
  border-radius: 10px;
  padding: .85rem 1rem;
  font: inherit; font-weight: 600;
  cursor: pointer;
  transition: background .15s, transform .05s, box-shadow .15s;
}
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn--primary {
  background: var(--primary); color: #fff; width: 100%;
  box-shadow: 0 2px 8px rgba(139,26,43,.25);
}
.btn--primary:not(:disabled):hover { background: var(--primary-hover); }
.btn--primary:not(:disabled):active { transform: translateY(1px); }

.btn--secondary {
  background: #fff;
  color: var(--primary);
  border: 1px solid var(--primary);
  width: 100%;
}
.btn--secondary:not(:disabled):hover { background: var(--primary-light); }

.audi-row { display: flex; gap: .4rem; align-items: stretch; }
.audi-row #audiCommission { flex: 1 1 auto; min-width: 0; }
.audi-row #audiYear {
  flex: 0 0 auto;
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  padding: .6rem .4rem;
  font: inherit;
  color: var(--text);
  cursor: pointer;
}
.audi-row #audiYear:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(139,26,43,.12);
}

.status { font-size: .82rem; color: var(--muted); min-height: 1.2em; }
.status.ok { color: #16a34a; }
.status.err { color: #dc2626; }

.panel--preview { display: flex; flex-direction: column; gap: 1rem; }
.preview-header {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 1rem; flex-wrap: wrap;
}
.preview-header h2 {
  margin: 0;
  font-size: .8rem; letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted); font-weight: 600;
}

.thumbs {
  display: flex; gap: .5rem; flex-wrap: wrap;
  max-width: 100%;
  justify-content: flex-start;
  padding-top: .25rem;
}
.thumb {
  width: 72px; height: 50px;
  border-radius: 6px;
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  background: #f3f4f6;
  position: relative;
  flex: 0 0 auto;
  transition: border-color .12s;
}
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb.active { border-color: var(--primary); }
.thumb-dragging { opacity: .4; }
.thumb-drop { border-color: var(--accent); box-shadow: 0 0 0 2px rgba(165,42,58,.25); }
.thumb .idx {
  position: absolute; top: 2px; left: 4px;
  font-size: 10px; font-weight: 700;
  color: #fff; text-shadow: 0 0 3px rgba(0,0,0,.7);
  pointer-events: none;
}
.thumb-del {
  position: absolute; top: 2px; right: 2px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(17,17,17,.75);
  color: #fff;
  border: 0;
  font-size: 13px; line-height: 1;
  display: grid; place-items: center;
  cursor: pointer;
  padding: 0;
  opacity: 0; transition: opacity .12s, background .12s;
}
.thumb:hover .thumb-del,
.thumb.active .thumb-del,
.thumb-del:focus { opacity: 1; }
.thumb-del:hover { background: var(--primary); }
@media (hover: none) { .thumb-del { opacity: 1; } }

.preview-stage {
  position: relative;
  background: #111;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 1536 / 1024;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
}
#preview {
  width: 100%; height: 100%; display: block;
  touch-action: none;          /* drag na mobile bez scrollu */
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
}
#preview:active { cursor: grabbing; }

.preview-empty {
  position: absolute; inset: 0;
  display: grid; place-items: center;
  color: #fff;
  background: rgba(0,0,0,.35);
  font-size: .95rem;
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0,0,0,.6);
  padding: 1rem;
  text-align: center;
  cursor: pointer;
  transition: background .15s;
}
.preview-empty:hover { background: rgba(0,0,0,.5); }

footer {
  padding: 1rem 1.5rem;
  color: var(--muted); font-size: .78rem;
  border-top: 1px solid var(--border);
  display: flex; gap: .5rem; justify-content: center;
  background: var(--panel);
  margin-top: 1rem;
}
.sep { opacity: .5; }

/* Drag & drop overlay cez celé okno. */
.drop-overlay {
  position: fixed; inset: 0;
  background: rgba(139, 26, 43, .18);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  z-index: 100;
  display: grid; place-items: center;
  pointer-events: none;
  animation: fadeIn .12s ease-out;
}
.drop-overlay .drop-box {
  background: #fff;
  border: 2px dashed var(--primary);
  border-radius: 16px;
  padding: 2rem 2.5rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 1.1rem;
  box-shadow: 0 10px 40px rgba(139,26,43,.25);
}
@keyframes fadeIn { from { opacity: 0 } to { opacity: 1 } }