/* TANOS landing — static, responsive, no dependencies */

:root {
  --bg: #0b0c10;
  --bg2: #0f1220;
  --card: #131a2a;
  --text: #eef2ff;
  --muted: #a9b0c6;
  --line: rgba(255, 255, 255, .12);
  --shadow: 0 18px 60px rgba(0, 0, 0, .45);
  --r: 18px;
  --r2: 26px;
  --max: 1120px;
  --focus: 0 0 0 3px rgba(120, 150, 255, .35);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f8fb;
    --bg2: #ffffff;
    --card: #ffffff;
    --text: #0d1226;
    --muted: #4a556e;
    --line: rgba(10, 20, 40, .12);
    --shadow: 0 20px 70px rgba(10, 20, 40, .14);
    --focus: 0 0 0 3px rgba(63, 94, 255, .25);
  }
}

* {
  box-sizing: border-box
}

html {
  scroll-behavior: smooth
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background:
    radial-gradient(1200px 800px at 20% -10%, rgba(110, 130, 255, .22), transparent 60%),
    radial-gradient(900px 600px at 90% 10%, rgba(255, 110, 200, .18), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

img {
  max-width: 100%;
  height: auto;
  display: block
}

a {
  color: inherit
}

.container {
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto
}

.skip {
  position: absolute;
  left: -999px;
  top: 10px;
  background: var(--card);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.skip:focus {
  left: 10px;
  outline: none;
  box-shadow: var(--focus)
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--bg2) 70%, transparent);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none
}

.brand-mark {
  display: block
}

.brand-mark img {
  border-radius: 12px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 90%, transparent)
}

.brand-name {
  font-weight: 800;
  letter-spacing: .2px
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 14px
}

.site-nav a {
  opacity: .9;
  text-decoration: none;
  padding: 10px 10px;
  border-radius: 12px
}

.site-nav a:hover {
  background: color-mix(in oklab, var(--card) 80%, transparent);
  opacity: 1
}

.nav-ctas {
  display: flex;
  gap: 10px;
  margin-left: 6px
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 85%, transparent);
  box-shadow: none;
}

.nav-toggle:focus {
  outline: none;
  box-shadow: var(--focus)
}

.nav-toggle-lines {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  margin: 0 auto;
  position: relative;
  border-radius: 99px;
  opacity: .9;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 2px;
  background: currentColor;
  border-radius: 99px;
}

.nav-toggle-lines::before {
  top: -6px
}

.nav-toggle-lines::after {
  top: 6px
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.btn:focus {
  outline: none;
  box-shadow: var(--focus)
}

.btn-primary {
  border-color: color-mix(in oklab, #6b7cff 35%, var(--line));
  background: linear-gradient(135deg, color-mix(in oklab, #6b7cff 70%, #000 0%), color-mix(in oklab, #ff70c8 40%, #000 0%));
  color: white;
  box-shadow: 0 14px 40px rgba(107, 124, 255, .18);
}

.btn-primary:hover {
  filter: brightness(1.03)
}

.btn-ghost {
  background: color-mix(in oklab, var(--card) 80%, transparent)
}

.btn-ghost:hover {
  background: color-mix(in oklab, var(--card) 92%, transparent)
}

.btn-link {
  border-color: transparent;
  background: transparent;
  padding-inline: 10px;
  opacity: .9;
}

.btn-link:hover {
  opacity: 1;
  text-decoration: underline
}

/* Hero */
.hero {
  position: relative;
  padding: 58px 0 24px;
  overflow: hidden
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 34px;
  align-items: center
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 84%, transparent);
  color: var(--muted);
  font-weight: 700;
  letter-spacing: .2px;
}

h1 {
  font-size: clamp(34px, 4.2vw, 56px);
  line-height: 1.04;
  margin: 14px 0 12px
}

.lead {
  font-size: clamp(16px, 1.4vw, 19px);
  color: var(--muted);
  margin: 0 0 18px;
  max-width: 54ch
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin: 18px 0 10px
}

.hero-art {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-icon {
  display: block
}

.hero-icon img {
  display: block;
  width: min(440px, 72vw);
  height: auto;
  max-width: 100%
}



































.hero-wave {
  height: 1px;
  width: 100%;
  margin-top: 42px;
  background: linear-gradient(90deg, transparent, color-mix(in oklab, var(--line) 80%, transparent), transparent);
}

/* Sections */
.section {
  padding: 64px 0
}

.section.alt {
  background: color-mix(in oklab, var(--card) 55%, transparent);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line)
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 22px
}

.section-head h2 {
  margin: 0;
  font-size: clamp(24px, 2.2vw, 34px)
}

.section-head .muted {
  margin: 0;
  text-align: right;
  max-width: 36ch
}

.muted {
  color: var(--muted)
}

.small {
  font-size: 13px
}

.grid {
  display: grid;
  gap: 16px
}

.cards {
  grid-template-columns: repeat(3, minmax(0, 1fr))
}

.card {
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 92%, transparent);
  border-radius: var(--r);
  padding: 18px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, .12);
}

.card h3 {
  margin: 10px 0 8px
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.55
}

.icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 86%, transparent);
  font-weight: 900;
}

/* Steps */
.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px
}

.step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 16px;
  background: color-mix(in oklab, var(--card) 92%, transparent);
}

.step h3 {
  margin: 0 0 6px
}

.step p {
  margin: 0;
  color: var(--muted)
}

.step-num {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, color-mix(in oklab, #6b7cff 22%, transparent), color-mix(in oklab, #ff70c8 16%, transparent));
  font-weight: 900;
}

/* CTA band */








/* Previews */
.previews-grid {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.compare-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@media (max-width: 900px) {
  .previews-grid {
    grid-template-columns: 1fr
  }
}

/* Theme compare (light/dark)
  - obrázky se NEsplácnou ani nedeformují (zachování poměru stran)
  - světlý je přilepený vlevo, tmavý vpravo
  - šoupák řeší jen VIDITELNOST (ořez), ne velikost
  - uchycení kdekoliv na obrázku (klik/tažení)
*/
.compare {
  position: relative;
  width: 100%;
  aspect-ratio: 9 / 10;
  overflow: hidden;
  --pos: 50%;
  /* allow normal page scrolling on touch devices */
  touch-action: pan-y;
  cursor: ew-resize;
  user-select: none;
}

/* Robustní vypnutí "kolečko" handle, když direct-drag není aktivní (telefon apod.) */
.compare--no-drag {
  cursor: default;
}

.compare--no-drag .compare__handle {
  display: none;
}

/* Ještě jedna pojistka pro iOS/Safari: zařízení bez hoveru = schovej handle */
@media (hover: none) {
  .compare {
    cursor: default;
  }

  .compare__handle {
    display: none;
  }
}

@media (pointer: coarse) {
  .compare {
    cursor: default;
  }

  /* Na telefonu necháme jen dělící čáru, ovládání je pod obrázkem */
  .compare__handle {
    display: none;
  }
}

.compare__base,
.compare__overlay {
  position: absolute;
  inset: 0;
}

.compare__base img,
.compare__img--light {
  object-position: left center
}

.compare__img--dark {
  object-position: right center
}

.compare__overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  clip-path: inset(0 calc(100% - var(--pos)) 0 0);
}

.compare__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos);
  width: 2px;
  transform: translateX(-1px);
  background: color-mix(in oklab, var(--text) 35%, transparent);
  pointer-events: none;
}

.compare__handle {
  position: absolute;
  left: var(--pos);
  top: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: color-mix(in oklab, var(--card) 85%, transparent);
  border: 1px solid var(--line);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .25);
  color: var(--text);
  pointer-events: none;
}

/* Mobile-friendly controls under preview */
.compare-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--r);
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 88%, transparent);
}

.compare-label {
  width: 28px;
  text-align: center;
  opacity: .9;
  user-select: none;
}

.compare-range {
  flex: 1;
  width: 100%;
  touch-action: pan-x;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--line) 85%, transparent);
  outline: none;
}

.compare-range:focus {
  box-shadow: var(--focus);
}

/* WebKit thumb */
.compare-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 92%, transparent);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .25);
}

/* Firefox thumb */
.compare-range::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: color-mix(in oklab, var(--card) 92%, transparent);
  box-shadow: 0 10px 24px rgba(0, 0, 0, .25);
}

.compare-range::-moz-range-track {
  height: 6px;
  border-radius: 999px;
  background: color-mix(in oklab, var(--line) 85%, transparent);
}


/* FAQ */
.faq {
  display: grid;
  gap: 12px
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: color-mix(in oklab, var(--card) 92%, transparent);
  padding: 12px 14px;
}

.faq-item summary {
  cursor: pointer;
  font-weight: 850;
  list-style: none
}

.faq-item summary::-webkit-details-marker {
  display: none
}

.faq-body {
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6
}







/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 22px 0;
  background: color-mix(in oklab, var(--bg2) 70%, transparent)
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap
}

.footer-brand {
  display: flex;
  gap: 12px;
  align-items: center
}

.footer-brand img {
  border-radius: 12px;
  border: 1px solid var(--line)
}

.footer-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 12px
}

.footer-links a:hover {
  background: color-mix(in oklab, var(--card) 80%, transparent);
  color: var(--text)
}

/* Responsive */
@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-art {
    order: -1
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr))
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column
  }

  .section-head .muted {
    text-align: left;
    max-width: none
  }
}

@media (max-width: 680px) {
  .container {
    width: min(var(--max), calc(100% - 28px))
  }

  .nav-toggle {
    display: inline-grid;
    place-items: center
  }

  .site-nav {
    position: absolute;
    right: 20px;
    left: 20px;
    top: 64px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: var(--r2);
    background: color-mix(in oklab, var(--bg2) 92%, transparent);
    box-shadow: var(--shadow);
  }

  .site-nav a {
    padding: 12px 12px
  }

  .nav-ctas {
    margin-left: 0;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px
  }

  body.nav-open .site-nav {
    display: flex
  }

  .cards {
    grid-template-columns: 1fr
  }


}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto
  }
}