/* ── Reset & base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { overflow-x: hidden; }

:root {
  --vhodne-bg:     #f0fdf4;
  --vhodne-border: #22c55e;
  --vhodne-text:   #15803d;
  --vhodne-badge:  #16a34a;

  --opatrne-bg:     #fefce8;
  --opatrne-border: #eab308;
  --opatrne-text:   #a16207;
  --opatrne-badge:  #ca8a04;

  --nevhodne-bg:     #fff1f2;
  --nevhodne-border: #f43f5e;
  --nevhodne-text:   #be123c;
  --nevhodne-badge:  #e11d48;

  --liberator-bg:     #fff7ed;
  --liberator-border: #f97316;
  --liberator-text:   #c2410c;
  --liberator-badge:  #ea580c;

  --bg:         #f4f6f9;
  --surface:    #ffffff;
  --border:     #e4e8ef;
  --text:       #111827;
  --text-muted: #6b7280;
  --accent:     #16a34a;
  --radius:     12px;
  --radius-sm:  8px;
  --shadow:     0 1px 3px rgba(0,0,0,.07), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.08);
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem 1rem 1.25rem;
}

.logo {
  width: 300px;
  height: auto;
  display: block;
  margin: 0 auto 1rem;
}

header .subtitle {
  font-size: .9rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: .01em;
}

/* ── Main ─────────────────────────────────────────────────────────────────── */
main {
  max-width: 820px;
  width: 100%;
  margin: 0 auto;
  padding: 1.75rem 1rem 2.5rem;
  flex: 1;
  overflow-x: clip;
}

/* ── Lucide global size ───────────────────────────────────────────────────── */
[data-lucide] { display: inline-block; vertical-align: middle; }

/* ── Sticky bar ───────────────────────────────────────────────────────────── */
.sticky-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding: .75rem 1rem;
  box-shadow: var(--shadow-md);
  transform: translateY(-110%);
  transition: transform .25s ease;
}
.sticky-bar.visible { transform: translateY(0); }
.sticky-bar .search-wrapper {
  max-width: 820px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
}
#scan-btn-sticky {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  cursor: pointer;
  padding: .5rem 1rem;
  transition: color .15s;
  position: relative;
  overflow: hidden;
}
#scan-btn-sticky:hover { color: var(--accent); }
#scan-btn-sticky svg { width: 18px; height: 18px; }
#clear-btn-sticky {
  display: none;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: .5rem 1rem;
  transition: color .15s;
}
#clear-btn-sticky svg { width: 16px; height: 16px; }
#clear-btn-sticky:hover { color: var(--text); }

/* ── Search ───────────────────────────────────────────────────────────────── */
.search-section { margin-bottom: 1rem; }

.search-wrapper {
  display: flex;
  align-items: center;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: border-color .2s, box-shadow .2s;
}
.search-wrapper:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(22,163,74,.12), var(--shadow-md);
}

.search-icon {
  flex-shrink: 0;
  margin-left: 1.1rem;
  color: var(--text-muted);
  width: 18px;
  height: 18px;
}

#search, #search-sticky {
  flex: 1;
  border: none;
  outline: none;
  padding: .8rem .75rem;
  font-size: 1rem;
  font-family: inherit;
  background: transparent;
  color: var(--text);
  font-weight: 500;
}
#search::placeholder, #search-sticky::placeholder { color: var(--text-muted); font-weight: 400; }

#clear-btn {
  display: none;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: .5rem 1rem;
  transition: color .15s;
}
#clear-btn svg { width: 16px; height: 16px; }
#clear-btn:hover { color: var(--text); }

#scan-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: .5rem 1rem;
  transition: color .15s;
  position: relative;
  overflow: hidden;
}
#scan-btn svg { width: 18px; height: 18px; }
#scan-btn:hover { color: var(--accent); }
.scan-loading {
  height: 3px;
  background: #e2e8f0;
  border-radius: 999px;
  margin-top: .5rem;
  overflow: hidden;
}
.scan-loading::after {
  content: '';
  display: block;
  height: 100%;
  width: 40%;
  background: var(--accent);
  border-radius: 999px;
  animation: scan-progress 1.2s ease-in-out infinite;
}
@keyframes scan-progress {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

.scan-error {
  font-size: .8rem;
  color: var(--nevhodne-text);
  background: var(--nevhodne-bg);
  border: 1px solid var(--nevhodne-border);
  border-radius: var(--radius-sm);
  padding: .35rem .75rem;
  margin-top: .5rem;
}

/* ── Filters + Legend (sloučeno) ─────────────────────────────────────────── */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.5rem;
}

.filter-btn {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  padding: .42rem 1rem;
  font-size: .82rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  background: var(--surface);
  color: var(--text-muted);
  transition: all .15s;
  letter-spacing: .01em;
  white-space: nowrap;
}
.filter-btn svg { width: 14px; height: 14px; flex-shrink: 0; }
.filter-btn strong { font-weight: 700; }
.filter-desc { font-weight: 400; opacity: .75; }

/* Klidový stav – barevné pozadí pro kategorie */
.filter-btn.vhodne    { border-color: var(--vhodne-border);    color: var(--vhodne-text);    background: var(--vhodne-bg); }
.filter-btn.opatrne   { border-color: var(--opatrne-border);   color: var(--opatrne-text);   background: var(--opatrne-bg); }
.filter-btn.nevhodne  { border-color: var(--nevhodne-border);  color: var(--nevhodne-text);  background: var(--nevhodne-bg); }
.filter-btn.liberator { border-color: var(--liberator-border); color: var(--liberator-text); background: var(--liberator-bg); }

.filter-btn:hover { filter: brightness(.95); }

/* Aktivní stav – plná barva */
.filter-btn.active[data-filter="all"]       { background: var(--accent);          color: white; border-color: var(--accent); }
.filter-btn.active[data-filter="vhodne"]    { background: var(--vhodne-badge);    color: white; border-color: var(--vhodne-badge); }
.filter-btn.active[data-filter="opatrne"]   { background: var(--opatrne-badge);   color: white; border-color: var(--opatrne-badge); }
.filter-btn.active[data-filter="nevhodne"]  { background: var(--nevhodne-badge);  color: white; border-color: var(--nevhodne-badge); }
.filter-btn.active[data-filter="liberator"] { background: var(--liberator-badge); color: white; border-color: var(--liberator-badge); }
.filter-btn.active .filter-desc { opacity: .85; }

/* ── Results count ────────────────────────────────────────────────────────── */
#results-count {
  font-size: .82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: .85rem;
}

/* ── Group sections ───────────────────────────────────────────────────────── */
.group-section { margin-bottom: 1.75rem; }

.group-title {
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--text-muted);
  margin-bottom: .6rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--border);
}

.group-items {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

/* ── Food card ────────────────────────────────────────────────────────────── */
.food-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  border-left-width: 4px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow .15s, transform .15s;
}
.food-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.food-card.vhodne    { border-color: var(--vhodne-border);    background: var(--vhodne-bg); }
.food-card.opatrne   { border-color: var(--opatrne-border);   background: var(--opatrne-bg); }
.food-card.nevhodne  { border-color: var(--nevhodne-border);  background: var(--nevhodne-bg); }
.food-card.liberator { border-color: var(--liberator-border); background: var(--liberator-bg); }

.food-level-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.food-level-icon svg { width: 15px; height: 15px; }
.food-level-icon.vhodne    { background: var(--vhodne-border);    color: white; }
.food-level-icon.opatrne   { background: var(--opatrne-border);   color: white; }
.food-level-icon.nevhodne  { background: var(--nevhodne-border);  color: white; }
.food-level-icon.liberator { background: var(--liberator-border); color: white; }

.food-card-main {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .65rem 1rem;
  cursor: pointer;
  user-select: none;
}

.food-icon { font-size: 1rem; flex-shrink: 0; }

.food-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .1rem;
  min-width: 0;
}

.food-name {
  font-size: .92rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.food-name mark {
  background: #fde68a;
  border-radius: 3px;
  padding: 0;
}

.food-note {
  font-size: .74rem;
  color: var(--text-muted);
  font-weight: 400;
}

.food-badge {
  font-size: .7rem;
  font-weight: 700;
  padding: .22rem .6rem;
  border-radius: 999px;
  color: white;
  white-space: nowrap;
  flex-shrink: 0;
  letter-spacing: .02em;
}
.food-badge.vhodne    { background: var(--vhodne-badge); }
.food-badge.opatrne   { background: var(--opatrne-badge); }
.food-badge.nevhodne  { background: var(--nevhodne-badge); }
.food-badge.liberator { background: var(--liberator-badge); }

.food-expand {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(0,0,0,.06);
  color: var(--text-muted);
  transition: background .15s, transform .2s;
  margin-left: .25rem;
}
.food-expand svg { width: 14px; height: 14px; }
.food-card:hover .food-expand { background: rgba(0,0,0,.1); }
.food-card.expanded .food-expand { transform: rotate(180deg); background: rgba(0,0,0,.1); }

.food-why {
  display: flex;
  gap: .55rem;
  font-size: .82rem;
  line-height: 1.6;
  color: #374151;
  padding: .55rem 1rem .7rem 1rem;
  border-top: 1px solid rgba(0,0,0,.06);
  background: rgba(255,255,255,.55);
  font-weight: 400;
}
.why-icon {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  margin-top: .2rem;
  opacity: .45;
}

/* ── No results ───────────────────────────────────────────────────────────── */
.no-results {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  font-size: .95rem;
}
.no-results-icon { width: 40px; height: 40px; opacity: .35; margin-bottom: .75rem; }
.no-results p { font-weight: 600; color: var(--text); }
.no-results span { font-size: .85rem; }
.hidden { display: none !important; }

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 1.25rem 1rem;
  font-size: .76rem;
  font-weight: 500;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
  line-height: 1.7;
}
footer a { color: var(--accent); text-decoration: none; }
footer a:hover { text-decoration: underline; }
.disclaimer { margin-top: .25rem; font-weight: 400; opacity: .75; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 520px) {
  .logo { width: 200px; }
  .filter-desc { display: none; }
  .food-badge { display: none; }
  .food-name { white-space: normal; }
}

/* ── Scan results panel ───────────────────────────────────────────────────── */
#scan-results { margin-bottom: 1rem; }
.scan-preview {
  width: 100%;
  max-height: 220px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: .75rem;
  margin-top: 1rem;
  box-shadow: var(--shadow-md);
}

.scan-summary-card {
  display: flex;
  align-items: center;
  gap: .85rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-weight: 700;
  font-size: 1rem;
  color: white;
  box-shadow: var(--shadow-md);
}
.scan-summary-card.vhodne    { background: var(--vhodne-badge); }
.scan-summary-card.opatrne   { background: var(--opatrne-badge); }
.scan-summary-card.nevhodne  { background: var(--nevhodne-badge); }
.scan-summary-card.liberator { background: var(--liberator-badge); }
.scan-summary-icon { flex-shrink: 0; }
.scan-summary-icon svg { width: 20px; height: 20px; }

#scan-items { display: flex; flex-direction: column; gap: .35rem; margin-bottom: 1rem; }

.food-card.unknown {
  border-color: var(--border);
  background: var(--surface);
  opacity: .65;
}
.food-level-icon.unknown { background: #cbd5e1; color: white; }

#scan-close {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  width: 100%;
  border: none;
  border-radius: var(--radius);
  padding: .75rem 1rem;
  font-size: .95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: var(--text);
  color: #fff;
  transition: opacity .15s;
  margin-top: .5rem;
}
#scan-close svg { width: 16px; height: 16px; }
#scan-close:hover { opacity: .85; }

.scan-tip {
  font-size: .78rem;
  color: var(--text-muted);
  margin-top: .5rem;
  padding-left: .25rem;
  display: flex;
  align-items: center;
  gap: .3rem;
}
.scan-tip svg { width: 13px; height: 13px; flex-shrink: 0; }

/* ── Category tiles ───────────────────────────────────────────────────────── */
.category-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: .75rem;
  margin-bottom: 1.5rem;
}

.category-tile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .3rem;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem .75rem .8rem;
  cursor: pointer;
  font-family: inherit;
  transition: border-color .15s, box-shadow .15s, transform .15s;
  box-shadow: var(--shadow);
  text-align: center;
}
.category-tile:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.category-tile.active {
  border-color: var(--accent);
  background: #f0fdf4;
  box-shadow: 0 0 0 3px rgba(22,163,74,.12), var(--shadow-md);
}

.cat-emoji  { font-size: 1.75rem; line-height: 1; }
.cat-label  { font-size: .82rem; font-weight: 700; color: var(--text); }
.cat-count  { font-size: .72rem; color: var(--text-muted); font-weight: 400; }
.cat-dots   { display: flex; gap: .3rem; margin-top: .15rem; flex-wrap: wrap; justify-content: center; }

.cat-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.cat-dot.vhodne    { background: var(--vhodne-badge); }
.cat-dot.opatrne   { background: var(--opatrne-badge); }
.cat-dot.nevhodne  { background: var(--nevhodne-badge); }
.cat-dot.liberator { background: var(--liberator-badge); }

/* Titulek na stránce kategorie */
.category-page-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: .3rem;
}

/* Scroll sentinel */
#scroll-sentinel { height: 1px; }

@media (max-width: 520px) {
  .category-tiles { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: .5rem; }
  .cat-emoji { font-size: 1.4rem; }
  .category-page-title { font-size: 1.1rem; }
}

/* ── Cookie bar ───────────────────────────────────────────────────────────── */
.cookie-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--text);
  color: #fff;
  padding: 1rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: .85rem;
  z-index: 999;
  box-shadow: 0 -2px 12px rgba(0,0,0,.15);
}
.cookie-bar p { margin: 0; line-height: 1.5; }
.cookie-bar a { color: #86efac; text-decoration: underline; }
.cookie-bar-actions { display: flex; gap: .5rem; flex-shrink: 0; }
.cookie-bar button {
  border: 1.5px solid rgba(255,255,255,.3);
  border-radius: var(--radius-sm);
  padding: .4rem .9rem;
  font-size: .82rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  background: transparent;
  color: #fff;
  transition: background .15s;
  white-space: nowrap;
}
.cookie-bar button:hover { background: rgba(255,255,255,.1); }
.cookie-accept-btn { background: var(--accent) !important; border-color: var(--accent) !important; }
.cookie-accept-btn:hover { opacity: .9; }
@media (max-width: 520px) {
  .cookie-bar { flex-direction: column; align-items: flex-start; }
}