/* =========================================================================
   Katalog 3D dílů – styly
   Vychází z designových tokenů webu ESP IDE (esp_ide_v2 / cloud),
   aby vše ladilo se zbytkem webu. Barvy měň v :root a .theme-dark.
   ========================================================================= */

:root {
  color-scheme: light;
  --ui-bg: #f3f6fb;
  --ui-panel: #ffffff;
  --ui-panel-soft: #f5f7fb;
  --ui-input: #fbfcff;
  --ui-text: #172033;
  --ui-muted: #687386;
  --ui-border: #dce3ee;
  --ui-border-strong: #c8d2e1;
  --ui-accent: #3563e9;
  --ui-accent-strong: #204bc8;
  --ui-accent-soft: #eaf0ff;
  --ui-accent-text: #ffffff;
  --ui-good: #168b57;
  --ui-warn: #9a5a00;
  --ui-danger: #c43d45;
  --ui-shadow: 0 16px 42px rgba(36, 55, 89, .09);
  --ui-shadow-soft: 0 7px 22px rgba(36, 55, 89, .07);

  /* Prostředí 3D scény (podklad pod modelem) */
  --stage-top: #eef2fb;
  --stage-bottom: #cdd6ea;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

html.theme-dark {
  color-scheme: dark;
  --ui-bg: #111724;
  --ui-panel: #1b2433;
  --ui-panel-soft: #232f41;
  --ui-input: #202b3c;
  --ui-text: #f2f5fa;
  --ui-muted: #a8b4c5;
  --ui-border: #34445a;
  --ui-border-strong: #485a72;
  --ui-accent: #7e9cff;
  --ui-accent-strong: #a3b7ff;
  --ui-accent-soft: #27375d;
  --ui-accent-text: #0c1320;
  --ui-good: #65dba4;
  --ui-warn: #ffbf5c;
  --ui-danger: #ff8d94;
  --ui-shadow: 0 18px 48px rgba(0, 0, 0, .26);
  --ui-shadow-soft: 0 8px 24px rgba(0, 0, 0, .22);
  --stage-top: #2a3446;
  --stage-bottom: #171e2b;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-height: 100%; overflow-x: clip; }

body {
  min-height: 100vh;
  margin: 0;
  padding-top: 72px; /* výška sdíleného menu (/menu/menu.php) */
  overflow-x: clip;
  background:
    radial-gradient(circle at 6% 0, color-mix(in srgb, var(--ui-accent) 9%, transparent), transparent 32rem),
    var(--ui-bg);
  color: var(--ui-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}

button, input, select { font: inherit; }
button { touch-action: manipulation; }
.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;
}

/* ------------------------------------------- lišta katalogu pod menu */
.catalog-bar {
  max-width: 1400px;
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 18px auto 0;
  padding: 10px 22px;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-lg);
  background: color-mix(in srgb, var(--ui-panel) 94%, transparent);
  box-shadow: var(--ui-shadow-soft);
}
.catalog-bar-actions { display: flex; align-items: center; gap: 8px; }
.brand-lockup {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ui-text);
  min-width: 0;
}
.brand-mark {
  width: 44px; height: 44px;
  flex: 0 0 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--ui-accent), #18a6b8);
  color: #fff;
  font-weight: 850;
  letter-spacing: -.04em;
  box-shadow: 0 8px 18px color-mix(in srgb, var(--ui-accent) 28%, transparent);
}
.brand-text { display: flex; flex-direction: column; min-width: 0; }
.brand { font-size: 18px; font-weight: 800; letter-spacing: -.02em; }
.brand-subtitle { color: var(--ui-muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* --------------------------------------------------------------- tlačítka */
.button {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--radius-sm);
  background: var(--ui-panel-soft);
  color: var(--ui-text);
  cursor: pointer;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  transition: transform .12s, box-shadow .12s, filter .12s, background .12s;
}
.button:hover { filter: brightness(.98); box-shadow: var(--ui-shadow-soft); transform: translateY(-1px); }
.button:active { transform: translateY(0); }
.button.primary {
  background: linear-gradient(135deg, var(--ui-accent), var(--ui-accent-strong));
  color: var(--ui-accent-text);
  border-color: transparent;
}
.button.ghost { background: transparent; box-shadow: none; }
.button.ghost:hover { background: var(--ui-panel-soft); }
.icon-button {
  width: 42px; height: 42px;
  flex: 0 0 42px;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-sm);
  background: var(--ui-panel-soft);
  color: var(--ui-text);
  font-size: 18px;
  cursor: pointer;
  transition: background .12s, transform .12s;
}
.icon-button:hover { background: var(--ui-accent-soft); }

/* ikonky slunce/měsíc se přepínají podle tématu */
.icon-moon { display: none; }
html.theme-dark .icon-sun { display: none; }
html.theme-dark .icon-moon { display: inline; }

/* Pozn.: .lang-toggle/.lang-link/.lang-sep řeší sdílené /menu/style.php. */
/* .icon-sun/.icon-moon a .brand-mark zůstávají připravené, kdyby se
   přepínač tématu nebo ikona katalogu v budoucnu vrátily. */

/* ------------------------------------------------------------- obsah */
.page-shell { max-width: 1400px; margin: 0 auto; padding: 30px 22px 70px; }

.hero { max-width: 720px; margin-bottom: 26px; }
.hero h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.08; letter-spacing: -.035em; margin: 0 0 12px; }
.lead { color: var(--ui-muted); font-size: 17px; line-height: 1.6; margin: 0; }
.eyebrow {
  color: var(--ui-accent-strong);
  font-size: 12px; font-weight: 800;
  text-transform: uppercase; letter-spacing: .1em;
  margin: 0 0 8px;
}
.muted { color: var(--ui-muted); }
.small { font-size: 12px; }

.card {
  border: 1px solid var(--ui-border);
  background: var(--ui-panel);
  border-radius: var(--radius-lg);
  box-shadow: var(--ui-shadow);
  padding: 22px;
}
.empty-state { text-align: center; }

/* --------------------------------------------------------------- toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.search-field {
  position: relative;
  flex: 1 1 260px;
  min-width: 220px;
  max-width: 420px;
}
.search-icon {
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  color: var(--ui-muted);
  font-size: 18px;
  pointer-events: none;
}
.search-field input {
  width: 100%;
  min-height: 44px;
  padding: 9px 14px 9px 40px;
  border: 1px solid var(--ui-border-strong);
  border-radius: var(--radius-sm);
  background: var(--ui-input);
  color: var(--ui-text);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.search-field input:focus {
  border-color: var(--ui-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ui-accent) 17%, transparent);
}

.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; }

/* přepínač rozsahu hledání */
.search-scope {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--ui-border-strong);
  border-radius: 999px;
  background: var(--ui-panel);
}
.scope-button {
  border: 0;
  background: transparent;
  color: var(--ui-muted);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.scope-button:hover { color: var(--ui-text); }
.scope-button.active { background: var(--ui-accent-soft); color: var(--ui-accent-strong); }

.search-note { margin: -6px 0 16px; color: var(--ui-muted); font-size: 13px; }
.chip {
  min-height: 38px;
  padding: 7px 13px;
  border: 1px solid var(--ui-border-strong);
  border-radius: 999px;
  background: var(--ui-panel);
  color: var(--ui-text);
  cursor: pointer;
  font-weight: 650;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: background .12s, border-color .12s, color .12s, transform .12s;
}
.chip:hover { transform: translateY(-1px); }
.chip.active {
  background: var(--ui-accent-soft);
  border-color: var(--ui-accent);
  color: var(--ui-accent-strong);
}
.chip-count {
  font-size: 11px;
  font-weight: 800;
  padding: 1px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ui-text) 8%, transparent);
}
.chip.active .chip-count { background: color-mix(in srgb, var(--ui-accent) 22%, transparent); }

.result-count { color: var(--ui-muted); font-size: 13px; margin: 0 0 18px; }
.toolbar .result-count { margin: 0; }
.no-results { text-align: center; color: var(--ui-muted); padding: 40px 0; }
.link-button {
  border: 0; background: none; padding: 0;
  color: var(--ui-accent); font-weight: 700; cursor: pointer; text-decoration: underline;
}

/* ------------------------------------------------------------ drobečky */

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 7px;
  margin-bottom: 16px;
  font-size: 13.5px;
  font-weight: 650;
}
.crumb-link { color: var(--ui-accent); text-decoration: none; }
.crumb-link:hover { text-decoration: underline; }
.crumb-sep { color: var(--ui-border-strong); }
.crumb-current { color: var(--ui-muted); }

.folder-heading {
  font-size: clamp(24px, 3vw, 34px);
  letter-spacing: -.03em;
  margin: 0 0 20px;
}

/* ------------------------------------------------------------ mřížka karet */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
}

.model-card, .folder-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-lg);
  background: var(--ui-panel);
  box-shadow: var(--ui-shadow-soft);
  overflow: hidden;
  transition: transform .15s, box-shadow .15s, border-color .15s;
  text-decoration: none;
  color: inherit;
}
.model-card:hover, .folder-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--ui-shadow);
  border-color: var(--ui-border-strong);
}

.card-preview {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  padding: 0;
  border: 0;
  border-bottom: 1px solid var(--ui-border);
  cursor: pointer;
  overflow: hidden;
  color: color-mix(in srgb, var(--ui-text) 45%, transparent);
  background:
    radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--ui-panel) 75%, transparent), transparent 70%),
    linear-gradient(180deg, var(--stage-top), var(--stage-bottom));
}

/* složka: ikona nebo vygenerovaný náhled */
.folder-preview { background: linear-gradient(180deg, var(--ui-panel-soft), var(--ui-panel)); }
.folder-icon {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 14px;
  box-sizing: border-box;
}
.folder-placeholder { color: var(--ui-accent); opacity: .7; }
.folder-count {
  position: absolute;
  top: 10px; right: 10px;
  min-width: 26px;
  padding: 3px 9px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ui-accent) 92%, transparent);
  color: var(--ui-accent-text);
  font-size: 12px;
  font-weight: 800;
  text-align: center;
}
.folder-badge {
  position: absolute;
  top: 10px; left: 10px;
  display: grid;
  place-items: center;
  width: 30px; height: 30px;
  border-radius: 9px;
  background: color-mix(in srgb, var(--ui-panel) 82%, transparent);
  color: var(--ui-accent);
  box-shadow: var(--ui-shadow-soft);
}
.card-go { color: var(--ui-accent); font-size: 18px; font-weight: 800; line-height: 1; }
.folder-card .card-body { display: block; }
.folder-card .card-title { display: block; margin: 0 0 7px; }
.folder-card:focus-visible { outline: 3px solid color-mix(in srgb, var(--ui-accent) 55%, transparent); outline-offset: 2px; }

/* hlavička složky + stažení ZIP */
.folder-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
}
.folder-head .folder-heading { margin: 0; }
.zip-button { white-space: nowrap; }

/* stažení modelu přímo na kartě */
.card-download {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin: -6px -6px -6px 0;
  border-radius: 8px;
  color: var(--ui-muted);
  text-decoration: none;
  transition: background .12s, color .12s, transform .12s;
}
.card-download:hover {
  background: var(--ui-accent-soft);
  color: var(--ui-accent-strong);
  transform: translateY(-1px);
}
.card-download:focus-visible { outline: 3px solid color-mix(in srgb, var(--ui-accent) 55%, transparent); outline-offset: 2px; }

/* spinner náhledu v kartě */
.card-spinner {
  display: none;
  position: absolute;
  top: 50%; left: 50%;
  width: 26px; height: 26px;
  margin: -13px 0 0 -13px;
  border: 3px solid color-mix(in srgb, var(--ui-accent) 22%, transparent);
  border-top-color: var(--ui-accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
.card-preview.is-loading .card-spinner { display: block; }
.card-preview.is-loading .card-placeholder { opacity: 0; }

/* formát modelu (STL / 3MF) */
.card-format {
  position: absolute;
  top: 10px; left: 10px;
  padding: 2px 7px;
  border-radius: 7px;
  background: color-mix(in srgb, var(--ui-panel) 82%, transparent);
  color: var(--ui-muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .04em;
  box-shadow: var(--ui-shadow-soft);
}
.card-thumb {
  position: absolute;
  inset: 0;
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  opacity: 0;
  transition: opacity .35s ease;
}
.card-thumb.ready { opacity: 1; }
.card-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition: opacity .3s ease;
}
.card-preview.has-thumb .card-placeholder { opacity: 0; }
.card-overlay {
  position: absolute;
  left: 50%; bottom: 12px;
  transform: translate(-50%, 8px);
  padding: 6px 13px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--ui-accent) 92%, transparent);
  color: var(--ui-accent-text);
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s ease, transform .18s ease;
}
.model-card:hover .card-overlay { opacity: 1; transform: translate(-50%, 0); }

.card-body { padding: 13px 15px 16px; }
.card-title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 750;
  letter-spacing: -.01em;
  line-height: 1.3;
}
.card-meta {
  margin: 0;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  color: var(--ui-muted);
  font-size: 12px;
}
.card-category { font-weight: 650; }

.site-footer { margin-top: 46px; padding-top: 22px; border-top: 1px solid var(--ui-border); }

/* ------------------------------------------------------------- 3D náhled */
.viewer { position: fixed; inset: 0; z-index: 1200; display: flex; }
.viewer-backdrop {
  position: absolute; inset: 0;
  background: rgba(10, 16, 28, .62);
  backdrop-filter: blur(3px);
  animation: fade-in .2s ease;
}
.viewer-panel {
  position: relative;
  margin: auto;
  width: min(1000px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--ui-border);
  border-radius: var(--radius-lg);
  background: var(--ui-panel);
  box-shadow: 0 30px 80px rgba(0, 0, 0, .35);
  overflow: hidden;
  animation: pop-in .22s ease;
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes pop-in { from { opacity: 0; transform: translateY(14px) scale(.98); } to { opacity: 1; transform: none; } }

.viewer-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 18px;
  border-bottom: 1px solid var(--ui-border);
}
.viewer-heading { min-width: 0; }
.viewer-heading h2 { margin: 0; font-size: 19px; letter-spacing: -.02em; }
.viewer-subtitle { margin: 3px 0 0; color: var(--ui-muted); font-size: 13px; }

.viewer-stage {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  height: clamp(280px, 56vh, 560px);
  background: linear-gradient(180deg, var(--stage-top), var(--stage-bottom));
}
.viewer-stage canvas { display: block; width: 100%; height: 100%; touch-action: none; }
.viewer-status {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--ui-muted);
  font-size: 14px;
  background: color-mix(in srgb, var(--ui-panel) 55%, transparent);
  transition: opacity .25s ease;
}
.viewer-status.is-hidden { opacity: 0; pointer-events: none; }
.viewer-status.is-error { color: var(--ui-danger); }
.spinner {
  width: 30px; height: 30px;
  border: 3px solid color-mix(in srgb, var(--ui-accent) 25%, transparent);
  border-top-color: var(--ui-accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.viewer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding: 12px 18px;
  border-top: 1px solid var(--ui-border);
  color: var(--ui-muted);
  font-size: 12.5px;
}
.viewer-meta:empty { display: none; }
.viewer-meta b { color: var(--ui-text); font-weight: 700; }

.viewer-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 13px 18px 16px;
  border-top: 1px solid var(--ui-border);
}
.control-group { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.color-group { margin-left: auto; }
.swatch {
  width: 28px; height: 28px;
  border: 2px solid var(--ui-border-strong);
  border-radius: 8px;
  cursor: pointer;
  padding: 0;
  transition: transform .12s, box-shadow .12s;
}
.swatch:hover { transform: scale(1.1); }
.swatch.active { border-color: var(--ui-text); box-shadow: 0 0 0 2px var(--ui-panel), 0 0 0 4px var(--ui-accent); }

/* volič vlastní barvy (vývojářský režim ?dev=1) */
.color-picker-field { display: inline-flex; }
.color-picker-field input[type="color"] {
  width: 46px;
  height: 32px;
  padding: 2px;
  border: 2px solid var(--ui-border-strong);
  border-radius: 8px;
  background: var(--ui-panel);
  cursor: pointer;
}
.color-picker-field input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-picker-field input[type="color"]::-webkit-color-swatch { border: 0; border-radius: 5px; }
.download-button { text-decoration: none; }

/* ------------------------------------------------------------ responsivita */
@media (max-width: 760px) {
  body { padding-top: 60px; }
  .catalog-bar { min-height: 58px; margin-top: 12px; padding: 8px 15px; gap: 12px; }
  .brand-subtitle { display: none; }
  .brand { font-size: 16px; }
  .brand-mark { width: 40px; height: 40px; flex-basis: 40px; }
  .page-shell { padding: 18px 15px 60px; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 13px; }
  .card-body { padding: 11px 12px 13px; }
  .card-title { font-size: 14px; }
  .viewer-panel { width: 100vw; height: 100vh; max-height: 100vh; border-radius: 0; border: 0; }
  .viewer-stage { height: auto; flex: 1 1 auto; }
  .control-label { display: none; }
  .button.ghost .control-label + span { margin: 0; }
  .viewer-meta { padding: 10px 14px; }
  .viewer-controls { padding: 12px 14px 16px; }
  .color-group { margin-left: 0; width: 100%; }
}

@media (max-width: 420px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --------------------------------------------------- přístupnost / pohyb */
:focus-visible { outline: 3px solid color-mix(in srgb, var(--ui-accent) 55%, transparent); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}