/* ==========================================================================
   AI PRE KAŽDÉHO - PRÉMIOVÝ, FAREBNÝ & FULLY RESPONZÍVNY DESIGN SYSTEM
   Fonty z Fontshare (Satoshi + Cabinet Grotesk)
   100% optimalizované pre mobily, tablety aj desktop
   ========================================================================== */

:root {
  --bg-page: #FAF9F6;
  --bg-surface: rgba(255, 255, 255, 0.92);
  --bg-surface-solid: #FFFFFF;
  --bg-subtle: #F3F4F6;
  --bg-glass: rgba(255, 255, 255, 0.85);

  --text-main: #0F172A;
  --text-muted: #475569;
  --text-light: #64748B;

  --border-color: rgba(226, 232, 240, 0.95);
  --border-strong: #CBD5E1;

  --brand-primary: #0F172A;

  --c-amber: #D97706;
  --c-indigo: #4F46E5;
  --c-rose: #E11D48;
  --c-purple: #9333EA;
  --c-blue: #0284C7;
  --c-teal: #0D9488;
  --c-emerald: #059669;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 30px -4px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 20px 40px -10px rgba(15, 23, 42, 0.14);

  --font-heading: 'Cabinet Grotesk', 'Satoshi', sans-serif;
  --font-base: 'Satoshi', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-size-root: 16px;

  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* TMAVÝ REŽIM (DARK MODE) */
[data-theme="dark"] {
  --bg-page: #0B0F19;
  --bg-surface: rgba(19, 27, 44, 0.92);
  --bg-surface-solid: #131B2C;
  --bg-subtle: #1C263B;
  --bg-glass: rgba(19, 27, 44, 0.88);

  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-light: #64748B;

  --border-color: rgba(30, 41, 59, 0.85);
  --border-strong: #334155;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 10px 30px -4px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, 0.65);
}

/* RESET */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-root);
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-base);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* BACKGROUND MESH OVERLAY */
.mesh-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.18) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(245, 158, 11, 0.18) 0px, transparent 50%),
    radial-gradient(at 50% 50%, rgba(236, 72, 153, 0.12) 0px, transparent 50%),
    radial-gradient(at 0% 100%, rgba(16, 185, 129, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.15) 0px, transparent 50%);
  filter: blur(50px);
}

[data-theme="dark"] .mesh-background {
  background: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.3) 0px, transparent 50%),
    radial-gradient(at 100% 0%, rgba(245, 158, 11, 0.25) 0px, transparent 50%),
    radial-gradient(at 50% 100%, rgba(16, 185, 129, 0.25) 0px, transparent 50%);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a { color: inherit; text-decoration: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
h1, h2, h3, h4 { font-family: var(--font-heading); }

/* ==========================================================================
   JEDNORIADKOVÝ NAVBAR
   ========================================================================== */
.main-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: nowrap;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  white-space: nowrap;
}

.logo-badge {
  background: linear-gradient(135deg, #4F46E5 0%, #9333EA 100%);
  color: #FFFFFF;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 4px 9px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.5px;
}

.nav-center-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  white-space: nowrap;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.nav-center-links::-webkit-scrollbar { display: none; }

.nav-link {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--c-indigo);
  background-color: rgba(79, 70, 229, 0.08);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  white-space: nowrap;
}

.font-size-control {
  display: flex;
  align-items: center;
  gap: 2px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: var(--radius-full);
}

.font-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  width: 22px;
  height: 22px;
  font-weight: 800;
  cursor: pointer;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.font-btn:hover { background-color: var(--border-color); }
.font-current { font-family: var(--font-mono); font-size: 0.8rem; font-weight: 800; min-width: 18px; text-align: center; }

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  background-color: var(--bg-surface-solid);
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-fast);
}

.icon-btn:hover { background-color: var(--bg-subtle); }
.theme-toggle-btn .light-icon { display: none; }
[data-theme="dark"] .theme-toggle-btn .dark-icon { display: none; }
[data-theme="dark"] .theme-toggle-btn .light-icon { display: block; }

/* ==========================================================================
   HERO SEKCIA
   ========================================================================== */
.portal-hero { padding: 36px 0 16px; }

.hero-inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-color);
}

.hero-kicker {
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--c-indigo);
  margin-bottom: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-kicker svg { width: 14px; height: 14px; color: var(--c-amber); }

.hero-heading {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.5px;
  line-height: 1.1;
  margin-bottom: 8px;
}

.hero-subtext {
  font-size: 1.02rem;
  color: var(--text-muted);
  line-height: 1.5;
  max-width: 580px;
}

.hero-search-wrapper { position: relative; width: 300px; }

.hero-search-wrapper input {
  width: 100%;
  background-color: var(--bg-surface-solid);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 10px 36px 10px 38px;
  font-size: 0.88rem;
  color: var(--text-main);
  outline: none;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.hero-search-wrapper input:focus {
  border-color: var(--c-indigo);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.15);
}

.hero-search-wrapper .search-icon {
  position: absolute; left: 12px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; color: var(--text-light);
}

.search-clear-btn {
  position: absolute; right: 10px; top: 50%; transform: translateY(-50%); background: transparent; border: none; color: var(--text-light); cursor: pointer; display: flex; align-items: center;
}

/* NAV PILLS */
.category-nav-section { padding: 16px 0 24px; }
.category-nav-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.category-nav-bar::-webkit-scrollbar { display: none; }

.cat-pill {
  background-color: var(--bg-surface-solid);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.cat-pill svg { width: 14px; height: 14px; }
.cat-pill:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.cat-pill.active { background-color: var(--brand-primary); color: #FFFFFF; border-color: var(--brand-primary); }
.cat-pill.pill-amber:hover, .cat-pill.pill-amber.active { background-color: #D97706; border-color: #D97706; color: #FFFFFF; }
.cat-pill.pill-indigo:hover, .cat-pill.pill-indigo.active { background-color: #4F46E5; border-color: #4F46E5; color: #FFFFFF; }
.cat-pill.pill-rose:hover, .cat-pill.pill-rose.active { background-color: #E11D48; border-color: #E11D48; color: #FFFFFF; }
.cat-pill.pill-purple:hover, .cat-pill.pill-purple.active { background-color: #9333EA; border-color: #9333EA; color: #FFFFFF; }
.cat-pill.pill-blue:hover, .cat-pill.pill-blue.active { background-color: #0284C7; border-color: #0284C7; color: #FFFFFF; }
.cat-pill.pill-teal:hover, .cat-pill.pill-teal.active { background-color: #0D9488; border-color: #0D9488; color: #FFFFFF; }

/* ==========================================================================
   CONTENT BLOCKS
   ========================================================================== */
.main-portal-content { padding-bottom: 60px; }

.content-block-card {
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-md);
}

.block-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 28px; flex-wrap: wrap; }

.step-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 6px;
}

.badge-amber { background-color: #FEF3C7; color: #B45309; border: 1px solid #FDE68A; }
.badge-indigo { background-color: #EEF2FF; color: #4338CA; border: 1px solid #C7D2FE; }
.badge-rose { background-color: #FFE4E6; color: #BE123C; border: 1px solid #FECDD3; }
.badge-purple { background-color: #F3E8FF; color: #7E22CE; border: 1px solid #E9D5FF; }
.badge-blue { background-color: #E0F2FE; color: #0369A1; border: 1px solid #BAE6FD; }
.badge-teal { background-color: #CCFBF1; color: #0F766E; border: 1px solid #99F6E4; }

.block-header h2 { font-size: 1.6rem; font-weight: 800; color: var(--text-main); margin-bottom: 4px; }
.block-lead { font-size: 0.95rem; color: var(--text-muted); }
.block-actions-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

/* BUTTONS */
.btn-clean-outline {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border-color);
  background-color: var(--bg-surface-solid);
  color: var(--text-main);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-clean-outline:hover { background-color: var(--bg-subtle); border-color: var(--border-strong); }
.btn-clean-outline svg { width: 14px; height: 14px; }

.btn-clean-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: #FFFFFF;
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: var(--transition-fast);
}

.btn-rose-grad { background: linear-gradient(135deg, #E11D48 0%, #BE123C 100%); }
.btn-purple-grad { background: linear-gradient(135deg, #9333EA 0%, #7E22CE 100%); color: #FFF; }
.btn-amber-grad { background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%); color: #FFF; }
.btn-blue-grad { background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%); color: #FFF; }
.btn-emerald-grad { background: linear-gradient(135deg, #10B981 0%, #059669 100%); color: #FFF; }
.btn-indigo-grad { background: linear-gradient(135deg, #6366F1 0%, #4F46E5 100%); color: #FFF; }
.btn-teal-grad { background: linear-gradient(135deg, #14B8A6 0%, #0D9488 100%); color: #FFF; }

/* ==========================================================================
   AI MODELY KARTY
   ========================================================================== */
.models-subsection { margin-bottom: 32px; }
.extra-section-spacing { border-top: 1.5px solid var(--border-color); padding-top: 32px; margin-top: 12px; }
.subsection-header { margin-bottom: 20px; }
.subsection-header h3 { font-size: 1.2rem; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 8px; margin-bottom: 2px; }
.subsection-header h3 svg { width: 18px; height: 18px; color: var(--c-amber); }
.subsection-header p { font-size: 0.88rem; color: var(--text-muted); }

.models-grid.three-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.model-item {
  background-color: var(--bg-surface-solid);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.model-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.card-notebooklm { border-color: #FCD34D; background: linear-gradient(180deg, #FFFFFF 0%, #FFFBEB 100%); }
.card-gamma { border-color: #FBCFE8; background: linear-gradient(180deg, #FFFFFF 0%, #FDF2F8 100%); }
.card-claude { border-color: #E9D5FF; background: linear-gradient(180deg, #FFFFFF 0%, #FDF4FF 100%); }
.card-gemini { border-color: #BAE6FD; background: linear-gradient(180deg, #FFFFFF 0%, #F0F9FF 100%); }
.card-openai { border-color: #A7F3D0; background: linear-gradient(180deg, #FFFFFF 0%, #ECFDF5 100%); }
.card-aistudio { border-color: #C7D2FE; background: linear-gradient(180deg, #FFFFFF 0%, #EEF2FF 100%); }

[data-theme="dark"] .card-notebooklm { background: linear-gradient(180deg, #131B2C 0%, rgba(217, 119, 6, 0.15) 100%); border-color: #D97706; }
[data-theme="dark"] .card-gamma { background: linear-gradient(180deg, #131B2C 0%, rgba(236, 72, 153, 0.15) 100%); border-color: #EC4899; }
[data-theme="dark"] .card-claude { background: linear-gradient(180deg, #131B2C 0%, rgba(147, 51, 234, 0.15) 100%); border-color: #9333EA; }
[data-theme="dark"] .card-gemini { background: linear-gradient(180deg, #131B2C 0%, rgba(37, 99, 235, 0.15) 100%); border-color: #2563EB; }
[data-theme="dark"] .card-openai { background: linear-gradient(180deg, #131B2C 0%, rgba(5, 150, 105, 0.15) 100%); border-color: #059669; }
[data-theme="dark"] .card-aistudio { background: linear-gradient(180deg, #131B2C 0%, rgba(79, 70, 229, 0.15) 100%); border-color: #4F46E5; }

.model-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.model-brand-tag { font-size: 0.72rem; font-weight: 800; padding: 3px 10px; border-radius: var(--radius-full); }

.tag-notebooklm { background-color: #FEF3C7; color: #B45309; }
.tag-gamma { background-color: #FCE7F3; color: #BE185D; }
.tag-claude { background-color: #F3E8FF; color: #7E22CE; }
.tag-gemini { background-color: #E0F2FE; color: #0369A1; }
.tag-openai { background-color: #D1FAE5; color: #047857; }
.tag-aistudio { background-color: #E0E7FF; color: #4338CA; }

.star-accent-icon { width: 18px; height: 18px; color: #D97706; }
.link-arrow { width: 16px; height: 16px; color: var(--text-light); }

.model-item h3 { font-size: 1.2rem; font-weight: 800; color: var(--text-main); margin-bottom: 6px; }
.model-item p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.45; margin-bottom: 16px; flex-grow: 1; }

.model-bullets { list-style: none; padding: 0; margin-bottom: 20px; display: flex; flex-direction: column; gap: 4px; }
.model-bullets li { font-size: 0.8rem; color: var(--text-light); position: relative; padding-left: 14px; }
.model-bullets li::before { content: "✓"; position: absolute; left: 0; color: #10B981; font-weight: 800; }

.card-action-btn {
  width: 100%;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 800;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: var(--transition-fast);
  border: none;
}

.card-action-btn svg { width: 14px; height: 14px; }
.card-action-btn:hover { transform: translateY(-1px); opacity: 0.92; }

/* STORE BADGES */
.app-store-links { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--border-color); }
.app-store-label { display: block; font-size: 0.72rem; font-weight: 800; color: var(--text-light); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 0.5px; }
.app-buttons-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.store-badge-btn { display: inline-flex; align-items: center; justify-content: center; gap: 4px; padding: 6px 8px; border-radius: var(--radius-sm); font-size: 0.74rem; font-weight: 700; border: 1px solid var(--border-color); background-color: var(--bg-surface-solid); color: var(--text-main); transition: var(--transition-fast); white-space: nowrap; }
.store-badge-btn svg { width: 13px; height: 13px; }
.store-badge-btn:hover { background-color: var(--bg-subtle); border-color: var(--border-strong); transform: translateY(-1px); }
.store-apple:hover { color: #000000; border-color: #000000; }
[data-theme="dark"] .store-apple:hover { color: #FFFFFF; border-color: #FFFFFF; }
.store-play:hover { color: #059669; border-color: #059669; }

/* ==========================================================================
   TOKENIZER WITH INTERACTIVE MODE SWITCH BUTTONS
   ========================================================================== */
.tokenizer-calc-body { background-color: var(--bg-surface-solid); border: 1.5px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; }
.calc-label { display: block; font-size: 0.85rem; font-weight: 800; color: var(--text-main); margin-bottom: 8px; }
.tokenizer-calc-body textarea { width: 100%; background-color: var(--bg-subtle); border: 1.5px solid var(--border-color); border-radius: var(--radius-sm); padding: 12px 16px; font-size: 0.92rem; color: var(--text-main); outline: none; resize: vertical; }

.calc-metrics-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 20px 0; }
.metric-cell { border-radius: var(--radius-sm); padding: 14px; text-align: center; border: 1px solid transparent; }
.metric-indigo { background-color: #EEF2FF; border-color: #C7D2FE; }
.metric-indigo .m-val { color: #4F46E5; }
.metric-purple { background-color: #F3E8FF; border-color: #E9D5FF; }
.metric-purple .m-val { color: #9333EA; }
.metric-teal { background-color: #CCFBF1; border-color: #99F6E4; }
.metric-teal .m-val { color: #0D9488; }

.m-label { font-size: 0.75rem; font-weight: 800; color: var(--text-muted); display: block; }
.m-val { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 800; }

.tokens-visual-box { background-color: var(--bg-subtle); border: 1.5px solid var(--border-color); border-radius: var(--radius-sm); padding: 16px; }

.visual-header-row { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; flex-wrap: wrap; gap: 10px; }
.visual-label { font-size: 0.85rem; font-weight: 800; color: var(--text-main); }

/* TOKEN REŽIMY TOGGLE SWITCH */
.token-mode-switch-group {
  display: flex;
  align-items: center;
  gap: 4px;
  background-color: var(--bg-surface-solid);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.token-mode-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 800;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.token-mode-btn svg { width: 14px; height: 14px; }
.token-mode-btn:hover { color: var(--text-main); background-color: var(--bg-subtle); }

.token-mode-btn.active {
  background-color: var(--brand-primary);
  color: #FFFFFF !important;
  box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .token-mode-btn.active {
  background-color: #3B82F6;
  color: #FFFFFF !important;
}

.tokens-rendered-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  min-height: 48px;
}

.token-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  white-space: nowrap;
  border: 1px solid transparent;
  box-shadow: 0 1px 3px rgba(0,0,0,0.04);
}

.token-id-tag {
  font-size: 0.72rem;
  font-weight: 800;
  opacity: 0.85;
  background: rgba(0, 0, 0, 0.08);
  padding: 1px 5px;
  border-radius: 4px;
}

.token-c-0 { background-color: #EEF2FF; color: #3730A3; border-color: #C7D2FE; }
.token-c-1 { background-color: #FEF3C7; color: #92400E; border-color: #FDE68A; }
.token-c-2 { background-color: #D1FAE5; color: #065F46; border-color: #A7F3D0; }
.token-c-3 { background-color: #E0F2FE; color: #075985; border-color: #BAE6FD; }
.token-c-4 { background-color: #F3E8FF; color: #6B21A8; border-color: #E9D5FF; }
.token-c-5 { background-color: #FCE7F3; color: #9D174D; border-color: #FBCFE8; }

/* ==========================================================================
   PDF & INFOGRAFIKA
   ========================================================================== */
.pdf-viewer-box { width: 100%; height: 620px; border-radius: var(--radius-md); overflow: hidden; border: 1.5px solid var(--border-color); background-color: #525659; }
.pdf-viewer-box iframe { width: 100%; height: 100%; border: none; display: block; }

.infographic-clean-wrapper { background-color: var(--bg-surface-solid); border: 1.5px solid var(--border-color); border-radius: var(--radius-md); padding: 16px; }
.infographic-image-card { position: relative; border-radius: var(--radius-sm); overflow: hidden; cursor: pointer; background-color: #FFFFFF; }
.infographic-image-card img { width: 100%; max-height: 480px; object-fit: cover; display: block; }
.image-overlay-prompt { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.5); color: #FFFFFF; display: flex; align-items: center; justify-content: center; gap: 6px; font-size: 0.88rem; font-weight: 800; opacity: 0; transition: opacity var(--transition-fast); }
.infographic-image-card:hover .image-overlay-prompt { opacity: 1; }

/* ==========================================================================
   VIDEO LEKCIA
   ========================================================================== */
.video-container-clean { width: 100%; }
.custom-video-wrapper { position: relative; width: 100%; border-radius: var(--radius-md); overflow: hidden; background-color: #000000; }
.custom-video-wrapper video { width: 100%; max-height: 540px; display: block; object-fit: contain; }
.video-overlay-play { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(0, 0, 0, 0.3); cursor: pointer; transition: opacity var(--transition-fast); }
.custom-video-wrapper.is-playing .video-overlay-play { opacity: 0; pointer-events: none; }
.play-circle-btn { width: 68px; height: 68px; border-radius: 50%; background: #FFFFFF; color: #111827; display: flex; align-items: center; justify-content: center; box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3); }
.play-circle-btn svg { width: 28px; height: 28px; margin-left: 2px; }
.video-control-bar { position: absolute; bottom: 0; left: 0; right: 0; background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, transparent 100%); padding: 12px 16px 8px; display: flex; flex-direction: column; gap: 6px; opacity: 0; transition: opacity var(--transition-fast); }
.custom-video-wrapper:hover .video-control-bar, .custom-video-wrapper:not(.is-playing) .video-control-bar { opacity: 1; }
.video-progress-bar-container { position: relative; width: 100%; height: 5px; background: rgba(255, 255, 255, 0.3); border-radius: 3px; cursor: pointer; }
.video-progress-bar { position: absolute; top: 0; left: 0; height: 100%; background: #9333EA; border-radius: 3px; width: 0%; }
.video-controls-row { display: flex; align-items: center; justify-content: space-between; color: #FFFFFF; }
.video-controls-left, .video-controls-right { display: flex; align-items: center; gap: 10px; }
.v-btn { background: transparent; border: none; color: #FFFFFF; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 4px; }
.v-btn svg { width: 18px; height: 18px; }
.video-time-display { font-family: var(--font-mono); font-size: 0.8rem; color: #D1D5DB; }

/* ==========================================================================
   SAMOSTATNÉ DEMO KARTY
   ========================================================================== */
.single-demo-card { background-color: var(--bg-surface-solid); border: 1.5px solid var(--border-color); border-radius: var(--radius-md); overflow: hidden; }
.single-demo-card .demo-card-header { padding: 12px 18px; background-color: var(--bg-subtle); border-bottom: 1.5px solid var(--border-color); }
.url-info { display: flex; align-items: center; gap: 8px; color: var(--text-muted); }
.url-info svg { width: 16px; height: 16px; color: var(--c-indigo); }
.demo-url { font-family: var(--font-mono); font-size: 0.82rem; font-weight: 600; }
.demo-iframe-wrap.full-height-iframe { width: 100%; height: 540px; }
.demo-iframe-wrap iframe { width: 100%; height: 100%; border: none; display: block; }

/* ==========================================================================
   PLNOOBRAZOVKOVÝ REŽIM (FULLSCREEN OPRAVA BEZ BIELEHO ODSTÁVANIA)
   ========================================================================== */
:fullscreen, :-webkit-full-screen {
  background-color: var(--bg-surface-solid) !important;
  width: 100vw !important;
  height: 100vh !important;
  display: flex !important;
  flex-direction: column !important;
  padding: 0 !important;
  margin: 0 !important;
}

/* Oprava pre celú obrazovku PDF a iframe rozhraní */
.pdf-viewer-box:fullscreen,
.pdf-viewer-box:-webkit-full-screen,
#pdfFrameWrapper:fullscreen,
#pdfFrameWrapper:-webkit-full-screen,
#llmFrameWrapper:fullscreen,
#llmFrameWrapper:-webkit-full-screen,
#netlifyFrameWrapper:fullscreen,
#netlifyFrameWrapper:-webkit-full-screen {
  width: 100vw !important;
  height: 100vh !important;
  max-height: 100vh !important;
  border-radius: 0 !important;
  border: none !important;
  background-color: #1E293B !important;
  display: flex !important;
  flex-direction: column !important;
}

/* V celoobrazovkovom režime roztiahni iframe obal a iframe na 100% výšky obrazovky */
#llmFrameWrapper:fullscreen .demo-iframe-wrap,
#llmFrameWrapper:-webkit-full-screen .demo-iframe-wrap,
#netlifyFrameWrapper:fullscreen .demo-iframe-wrap,
#netlifyFrameWrapper:-webkit-full-screen .demo-iframe-wrap {
  flex: 1 1 100% !important;
  height: 100% !important;
  max-height: 100% !important;
}

#llmFrameWrapper:fullscreen iframe,
#llmFrameWrapper:-webkit-full-screen iframe,
#netlifyFrameWrapper:fullscreen iframe,
#netlifyFrameWrapper:-webkit-full-screen iframe,
#pdfFrameWrapper:fullscreen iframe,
#pdfFrameWrapper:-webkit-full-screen iframe {
  width: 100vw !important;
  height: 100% !important;
  flex: 1 1 100% !important;
  border: none !important;
}

/* ==========================================================================
   AI HLASOVÉ KLONY
   ========================================================================== */
.audio-player-clean-box { background-color: var(--bg-surface-solid); border: 1.5px solid var(--border-color); border-radius: var(--radius-md); padding: 24px; }
.audio-tracks-selector { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
.track-tab-btn { background-color: var(--bg-subtle); border: 1.5px solid var(--border-color); border-radius: var(--radius-sm); padding: 14px 18px; text-align: left; cursor: pointer; transition: var(--transition-fast); }
.track-tab-btn:hover { border-color: var(--border-strong); }
.track-tab-btn.active { border-color: var(--c-teal); background-color: var(--bg-surface-solid); box-shadow: var(--shadow-sm); }
.track-btn-content strong { display: block; font-size: 1rem; color: var(--text-main); }
.track-btn-content small { font-size: 0.78rem; color: var(--text-muted); }
.audio-player-body { background-color: var(--bg-subtle); border: 1.5px solid var(--border-color); border-radius: var(--radius-sm); padding: 20px; }
.audio-track-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.track-title-text { font-weight: 800; font-size: 1.05rem; color: var(--text-main); }
.waveform-container { position: relative; height: 54px; background-color: var(--bg-surface-solid); border-radius: var(--radius-sm); padding: 8px 12px; display: flex; align-items: center; cursor: pointer; overflow: hidden; margin-bottom: 16px; }
.waveform-bars { display: flex; align-items: center; justify-content: space-between; width: 100%; height: 100%; gap: 2px; }
.wave-bar { flex: 1; background-color: var(--border-strong); border-radius: 2px; min-height: 4px; }
.wave-bar.played { background-color: var(--c-teal); }
.waveform-scrub-line { position: absolute; top: 0; bottom: 0; left: 0%; width: 2px; background-color: var(--c-teal); }
.audio-controls-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.audio-play-row { display: flex; align-items: center; gap: 12px; }
.play-btn-circle { width: 44px; height: 44px; border-radius: 50%; color: #FFFFFF; border: none; display: flex; align-items: center; justify-content: center; cursor: pointer; }
.play-btn-circle svg { width: 20px; height: 20px; }
.audio-time-label { font-family: var(--font-mono); font-size: 0.82rem; color: var(--text-muted); }
.audio-actions-right { display: flex; align-items: center; gap: 10px; }
.audio-actions-right input[type="range"] { width: 80px; accent-color: var(--c-teal); }

/* FOOTER */
.site-footer { border-top: 1px solid var(--border-color); background-color: var(--bg-surface-solid); padding: 32px 0; margin-top: auto; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-left strong { font-size: 0.95rem; color: var(--text-main); }
.footer-left p { font-size: 0.82rem; color: var(--text-muted); }
.footer-right { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-right a { font-size: 0.85rem; color: var(--text-muted); }
.footer-right a:hover { color: var(--text-main); }

/* LIGHTBOX */
.lightbox-modal { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all var(--transition-fast); }
.lightbox-modal.open { opacity: 1; visibility: visible; }
.lightbox-backdrop { position: absolute; inset: 0; background: rgba(0, 0, 0, 0.8); }
.lightbox-content { position: relative; z-index: 1; max-width: 90vw; max-height: 90vh; }
.lightbox-close-btn { position: absolute; top: -40px; right: 0; background: transparent; border: none; color: #FFFFFF; font-size: 1.2rem; cursor: pointer; }
.lightbox-content img { max-width: 90vw; max-height: 85vh; object-fit: contain; border-radius: var(--radius-sm); background-color: #FFFFFF; }

/* TOAST */
.toast-notification { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px); background: #0F172A; color: #FFFFFF; padding: 10px 20px; border-radius: var(--radius-full); font-size: 0.85rem; font-weight: 800; z-index: 3000; opacity: 0; transition: all var(--transition-fast); }
.toast-notification.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* ==========================================================================
   DETAILNÁ MOBILNÁ RESPONZIVITA
   ========================================================================== */
@media (max-width: 1024px) {
  .models-grid.three-col { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .nav-center-links { display: none; }
  .hero-inner { flex-direction: column; align-items: stretch; gap: 16px; }
  .hero-heading { font-size: 2rem; }
  .hero-subtext { font-size: 0.92rem; }
  .hero-search-wrapper { width: 100%; }
  
  .content-block-card { padding: 22px 18px; margin-bottom: 24px; }
  .block-header h2 { font-size: 1.35rem; }
  
  .models-grid.three-col { grid-template-columns: 1fr; }
  .calc-metrics-row { grid-template-columns: 1fr; gap: 10px; }
  .audio-tracks-selector { grid-template-columns: 1fr; }
  
  .pdf-viewer-box { height: 420px; }
  .demo-iframe-wrap.full-height-iframe { height: 380px; }
}

@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .brand-title { font-size: 0.95rem; }
  .hero-heading { font-size: 1.7rem; }
  .content-block-card { padding: 18px 14px; border-radius: var(--radius-md); }
  .pdf-viewer-box { height: 340px; }
  .demo-iframe-wrap.full-height-iframe { height: 320px; }
  .app-buttons-row { grid-template-columns: 1fr 1fr; gap: 6px; }
  .store-badge-btn { padding: 5px 6px; font-size: 0.72rem; }
  .token-mode-switch-group { width: 100%; justify-content: space-between; }
  .token-mode-btn { padding: 5px 8px; font-size: 0.74rem; }
}