/* Delta12 landing – směr 1a „Signál“, stejné tokeny jako aplikace (Claude Design: delta12.css). */

:root {
  --bg: oklch(0.968 0.004 255);
  --surf: #ffffff;
  --surf2: oklch(0.94 0.005 255);
  --ink: oklch(0.19 0.012 255);
  --mut: oklch(0.52 0.012 255);
  --line: oklch(0.90 0.005 255);
  --acc: oklch(0.67 0.19 42);
  --acc-press: oklch(0.60 0.18 40);
  --acc-soft: oklch(0.94 0.045 50);
  --acc-text: oklch(0.47 0.15 38);
  --hero: oklch(0.19 0.012 255);
  --hero-ink: #ffffff;
  --hero-mut: oklch(0.72 0.01 255);
  --warn: oklch(0.55 0.15 28);
  --r: 24px;
  --r-s: 16px;
  --f-body: 'Geist', -apple-system, system-ui, sans-serif;
  --f-disp: 'Archivo', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--f-body); font-size: 17px; line-height: 1.45; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--acc); }
img { max-width: 100%; }
:focus-visible { outline: 2px solid var(--acc); outline-offset: 3px; border-radius: 6px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.w { max-width: 1120px; margin: 0 auto; padding: 0 40px; }
.sec { padding: 104px 0; }
.sec.tight { padding: 72px 0; }
.dark { background: var(--hero); color: var(--hero-ink); }
.dark .mut { color: var(--hero-mut); }
.mut { color: var(--mut); }
.over { font-size: 13px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--acc-text); margin: 0 0 14px; }
.dark .over { color: var(--acc); }
.h1 { font-family: var(--f-disp); font-weight: 850; font-stretch: 70%; text-transform: uppercase; font-size: 104px; line-height: .86; margin: 0; text-wrap: balance; }
.h2 { font-family: var(--f-disp); font-weight: 850; font-stretch: 72%; text-transform: uppercase; font-size: 60px; line-height: .9; margin: 0; text-wrap: balance; }
.h3 { font-family: var(--f-disp); font-weight: 850; font-stretch: 78%; text-transform: uppercase; font-size: 26px; line-height: 1; margin: 0; }
.lead { font-size: 20px; line-height: 1.5; margin: 0; text-wrap: pretty; max-width: 620px; }
p { margin: 0; text-wrap: pretty; }
.acc { color: var(--acc); }
.num { font-family: var(--f-disp); font-weight: 800; font-stretch: 85%; font-variant-numeric: tabular-nums; line-height: 1; }
.stack { display: flex; flex-direction: column; gap: 24px; }

/* navigace */
.nav { height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; font-family: var(--f-disp); font-weight: 850; font-stretch: 80%; font-size: 24px; text-transform: uppercase; }
.logo:hover { color: inherit; }
.delta { width: 30px; height: 30px; background: var(--acc); clip-path: polygon(50% 6%, 96% 92%, 4% 92%); flex: none; }
.links { display: flex; gap: 28px; font-size: 15px; font-weight: 500; }
.lang { display: flex; gap: 2px; padding: 3px; border-radius: 99px; background: rgba(255,255,255,.08); font-size: 13px; font-weight: 600; }
.lang a { padding: 6px 11px; border-radius: 99px; color: var(--hero-mut); }
.lang a:hover { color: var(--hero-ink); }
.lang a[aria-current] { background: var(--hero-ink); color: var(--hero); }
.links a { color: var(--hero-mut); }
.links a:hover { color: var(--hero-ink); }

/* lepkavá lišta + hamburger */
.topbar { position: sticky; top: 0; z-index: 50; background: color-mix(in oklch, var(--hero) 86%, transparent);
  -webkit-backdrop-filter: saturate(1.4) blur(14px); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid transparent; transition: border-color .2s ease; }
.topbar.scrolled { border-bottom-color: rgba(255,255,255,.08); }
.topbar .w { position: relative; }
.nav-r { display: flex; align-items: center; gap: 10px; }
.burger { display: none; width: 44px; height: 44px; border-radius: 50%; border: 0; padding: 0; background: rgba(255,255,255,.08); color: var(--hero-ink); cursor: pointer; align-items: center; justify-content: center; }
.burger span, .burger span::before, .burger span::after { display: block; width: 18px; height: 2px; border-radius: 1px; background: currentColor; transition: transform .2s ease, background .2s ease; }
.burger span { position: relative; }
.burger span::before, .burger span::after { content: ''; position: absolute; left: 0; }
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }
.topbar[data-open="true"] .burger span { background: transparent; }
.topbar[data-open="true"] .burger span::before { transform: translateY(6px) rotate(45deg); }
.topbar[data-open="true"] .burger span::after { transform: translateY(-6px) rotate(-45deg); }
section[id] { scroll-margin-top: 76px; }
@media (prefers-reduced-motion: reduce) { .burger span, .burger span::before, .burger span::after { transition: none; } }

/* tlačítka */
.btn { height: 58px; padding: 0 28px; border-radius: 18px; border: 0; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--f-disp); font-stretch: 85%; font-weight: 800; text-transform: uppercase; letter-spacing: .02em; font-size: 17px; background: var(--acc); color: #fff; white-space: nowrap; transition: transform .12s ease, background .12s ease; }
.btn:hover { color: #fff; background: var(--acc-press); }
.btn:active { transform: scale(.98); }
.btn.light { background: var(--hero-ink); color: var(--hero); }
.btn.light:hover { background: oklch(0.93 0.004 255); color: var(--hero); }
.btn.ink { background: var(--ink); color: var(--bg); }
.btn.ink:hover { background: oklch(0.28 0.012 255); color: var(--bg); }
.btn[disabled] { opacity: .6; cursor: default; }

/* hero */
.hero-grid { display: grid; grid-template-columns: minmax(0,1fr) 320px; gap: 56px; align-items: center; padding: 48px 0 56px; }
.aud { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.aud-c { border-radius: 28px; padding: 32px; display: flex; flex-direction: column; gap: 14px; min-height: 280px; }
.aud-c.a { background: var(--acc); color: #fff; }
.aud-c.b { background: var(--hero-ink); color: var(--hero); }
.aud-c .k { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; opacity: .8; }
.aud-c .h3 { font-size: 40px; }
.aud-c p { opacity: .9; max-width: 440px; }
.aud-c .btn { align-self: flex-start; margin-top: auto; }

/* telefon (výřez obrazovky Plán) */
.phone-wrap { width: 320px; height: 692px; position: relative; }
.phone { transform: scale(.82); transform-origin: top left; }
.ph { width: 390px; height: 844px; border-radius: 46px; overflow: hidden; position: relative; box-shadow: 0 24px 60px rgba(0,0,0,.35), 0 0 0 1px rgba(255,255,255,.08);
  background: var(--bg); color: var(--ink); font-size: 15px; line-height: 1.35; display: flex; flex-direction: column; }
.ph .sb { height: 54px; padding: 18px 30px 0; display: flex; justify-content: space-between; font: 600 16px/1 -apple-system, system-ui, sans-serif; flex: none; }
.ph .sb-r { display: flex; gap: 6px; align-items: center; }
.ph .sb-r span { display: block; background: currentColor; border-radius: 2px; }
.ph .sb-a { width: 17px; height: 11px; } .ph .sb-b { width: 15px; height: 11px; border-radius: 50% !important; } .ph .sb-c { width: 26px; height: 12px; border-radius: 4px !important; }
.ph .body { padding: 8px 20px 20px; display: flex; flex-direction: column; gap: 14px; flex: 1; min-height: 0; }
.ph .p-over { font-size: 12px; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--mut); }
.ph .p-h1 { font-family: var(--f-disp); font-weight: 850; font-stretch: 72%; text-transform: uppercase; font-size: 44px; line-height: .92; margin: 0; }
.ph .p-h2 { font-family: var(--f-disp); font-weight: 850; font-stretch: 75%; text-transform: uppercase; font-size: 22px; line-height: 1; }
.ph .small { font-size: 12.5px; color: var(--mut); line-height: 1.45; }
.ph .card { background: var(--surf); border: 1px solid var(--line); border-radius: var(--r); padding: 16px; }
.ph .tag { font-size: 11px; font-weight: 700; padding: 3px 8px; border-radius: 99px; background: var(--ink); color: var(--bg); white-space: nowrap; }
.ph .fxjb { display: flex; justify-content: space-between; align-items: center; }
.ws { display: grid; grid-template-columns: repeat(12, 1fr); gap: 3px; }
.ws span { height: 34px; border-radius: 7px; display: flex; align-items: center; justify-content: center; font-family: var(--f-disp); font-weight: 800; font-stretch: 85%; font-size: 12px; background: oklch(0.86 0.06 50); color: var(--acc-text); }
.ws span.lite { background: var(--line); color: var(--mut); }
.ws span.dev { background: oklch(0.76 0.12 46); color: #fff; }
.ws span.peak { background: var(--acc); color: #fff; }
.ws span.test { background: var(--ink); color: var(--bg); }
.ws span.cur { box-shadow: 0 0 0 2px var(--bg), 0 0 0 4px var(--ink); }
.ws-l { display: flex; justify-content: space-between; font-size: 11px; color: var(--mut); margin-top: 6px; }
.days { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; margin-top: 12px; }
.day { display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 11.5px; color: var(--mut); font-weight: 500; }
.day i { width: 38px; height: 38px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-style: normal; font-weight: 600; font-size: 14px; color: var(--ink); border: 1.5px solid var(--line); }
.day.done i { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.day.today i { background: var(--acc); border-color: var(--acc); color: #fff; }
.day.today { color: var(--ink); font-weight: 700; }
.row { display: flex; align-items: center; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: 0; }
.ck { flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--line); display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; }
.ck.done { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.ck.now { border: 2px solid var(--acc); }
.ck.now::after { content: ''; width: 10px; height: 10px; border-radius: 50%; background: var(--acc); }
.r-main { flex: 1; min-width: 0; }
.r-t { font-weight: 600; font-size: 15px; }
.row.isdone .r-t { color: var(--mut); }
.r-s { font-size: 12.5px; color: var(--mut); margin-top: 2px; }
.r-end { font-size: 12px; color: var(--acc); font-weight: 700; white-space: nowrap; }
.spacer { flex: 1; }
.tabs { margin: 0 16px; height: 64px; border-radius: 32px; display: grid; grid-template-columns: repeat(4, 1fr); align-items: center; padding: 0 6px; flex: none;
  background: color-mix(in oklch, var(--surf) 78%, transparent); box-shadow: 0 8px 30px rgba(20,25,35,.10), inset 0 0 0 1px rgba(255,255,255,.6); }
.tab { display: flex; flex-direction: column; align-items: center; gap: 4px; font-size: 10.5px; font-weight: 600; color: var(--mut); }
.tab svg { width: 24px; height: 24px; }
.tab.on { color: var(--acc); }
.tab.on svg { stroke-width: 2.4; }
.home { height: 5px; width: 136px; border-radius: 3px; background: var(--ink); margin: 10px auto 8px; opacity: .9; flex: none; }

/* problém */
.g3 { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 20px; }
.g3 > div { display: flex; flex-direction: column; gap: 8px; }
.strike { text-decoration: line-through; text-decoration-color: var(--acc); text-decoration-thickness: 3px; }

/* jak to funguje */
.surf { background: var(--surf); }
.tl { display: grid; grid-template-columns: repeat(13, minmax(0,1fr)); gap: 6px; }
.tl span { height: 56px; border-radius: 10px; background: var(--line); display: flex; align-items: flex-end; justify-content: center; padding-bottom: 8px; font-family: var(--f-disp); font-weight: 800; font-stretch: 85%; font-size: 14px; color: var(--mut); }
.tl span.t0 { background: var(--acc); color: #fff; }
.tl span.test { background: var(--ink); color: var(--bg); }
.tl span.lite { background: var(--acc-soft); color: var(--acc-text); }
.legend { display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 13px; color: var(--mut); margin-top: 14px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.steps { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; margin-top: 36px; }
.step { display: flex; flex-direction: column; gap: 8px; padding-top: 18px; border-top: 2px solid var(--ink); }
.step .d { font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--mut); }

/* plán + data */
.g2 { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 56px; align-items: start; }
.cards2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.card { background: var(--surf); border: 1px solid var(--line); border-radius: var(--r); padding: 28px; display: flex; flex-direction: column; gap: 10px; }
.card .h3 { font-size: 22px; }
.card p { font-size: 15px; }
.idx { font-family: var(--f-disp); font-weight: 800; font-stretch: 85%; font-size: 15px; color: var(--acc-text); }
.metric { display: flex; flex-direction: column; gap: 6px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.metric:last-of-type { border-bottom: 0; }
.metric .l { font-size: 15px; }
.metric .v { font-size: 44px; }
.metric .v.was { color: var(--mut); }
.metric small { font-family: var(--f-body); font-size: 16px; font-weight: 500; color: var(--mut); margin-left: 6px; font-stretch: 100%; }
.drow { display: flex; align-items: baseline; gap: 18px; }
.arrow { font-size: 28px; color: var(--acc); font-weight: 700; }
.note { font-size: 14px; margin-top: 6px; }

/* soukromí */
.list { display: flex; flex-direction: column; }
.list > div { display: grid; grid-template-columns: 28px minmax(0,1fr); gap: 14px; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.1); }
.list > div:last-child { border-bottom: 0; }
.list i { font-style: normal; font-family: var(--f-disp); font-weight: 800; font-stretch: 85%; color: var(--acc); }
.list b { display: block; font-size: 18px; font-weight: 600; margin-bottom: 3px; }

/* autor plánu */
.author { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; }
.author > div { border-radius: 20px; border: 1.5px solid var(--line); padding: 22px; display: flex; flex-direction: column; gap: 6px; background: var(--surf); }
.author > div.on { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.author b { font-family: var(--f-disp); font-weight: 850; font-stretch: 78%; text-transform: uppercase; font-size: 24px; }
.rail { margin-top: 14px; border-radius: 20px; background: var(--surf2); padding: 18px 22px; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 15px; font-weight: 500; }
.rail i { font-style: normal; color: var(--acc-text); font-weight: 700; margin-right: 6px; }

/* pro trenéry */
.coach { background: var(--acc); color: #fff; }
.coach .k { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; opacity: .85; }
.coach .lead { font-size: 18px; opacity: .92; }
.coach .btn { align-self: flex-start; }
.feat { display: flex; flex-direction: column; gap: 12px; }
.feat > div { background: rgba(255,255,255,.14); border-radius: 22px; padding: 22px 24px; }
.feat b { font-size: 18px; }
.feat p { opacity: .88; margin-top: 4px; }

/* přihláška */
.form { background: var(--surf); border-radius: 28px; padding: 36px; display: flex; flex-direction: column; gap: 14px; color: var(--ink); }
.seg { display: grid; grid-template-columns: 1fr 1fr; background: var(--surf2); border-radius: 16px; padding: 4px; gap: 4px; }
.seg button { height: 46px; border-radius: 13px; border: 0; background: transparent; font: 600 15px var(--f-body); color: var(--mut); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--surf); color: var(--ink); box-shadow: 0 1px 4px rgba(20,25,35,.12); }
.in { height: 58px; width: 100%; border-radius: 16px; border: 1px solid var(--line); background: var(--bg); padding: 0 18px; font: 16px var(--f-body); color: var(--ink); }
.in::placeholder { color: var(--mut); }
.in:focus { outline: 2px solid var(--acc); outline-offset: 0; border-color: transparent; }
.fl { font-size: 14px; color: var(--mut); margin-top: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; border: 0; margin: 0; padding: 0; }
.chips label { position: relative; }
.chips input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chips span { height: 40px; padding: 0 16px; border-radius: 99px; border: 1.5px solid var(--line); display: flex; align-items: center; font-size: 14px; font-weight: 500; cursor: pointer; }
.chips input:checked + span { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chips input:focus-visible + span { outline: 2px solid var(--acc); outline-offset: 2px; }
.fine { font-size: 13px; color: var(--mut); line-height: 1.45; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.msg { border-radius: 16px; padding: 16px 18px; font-size: 15px; font-weight: 500; }
.msg.ok { background: var(--acc-soft); color: var(--acc-text); }
.msg.err { background: oklch(0.95 0.03 28); color: var(--warn); }
[hidden] { display: none !important; }
.faq > div { padding: 20px 0; border-bottom: 1px solid rgba(255,255,255,.1); display: flex; flex-direction: column; gap: 6px; }
.faq > div:last-child { border-bottom: 0; }
.faq b { font-size: 17px; font-weight: 600; }
.foot { padding: 36px 0 44px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 14px; border-top: 1px solid rgba(255,255,255,.1); flex-wrap: wrap; }
.foot .logo { font-size: 20px; color: var(--hero-ink); }
.foot .logo .delta { width: 24px; height: 24px; }
.foot-links { display: flex; gap: 24px; flex-wrap: wrap; }

/* ---------- tablet ---------- */
@media (max-width: 960px) {
  .burger { display: flex; }
  .links { display: none; position: absolute; left: 0; right: 0; top: 100%; flex-direction: column; gap: 0; padding: 4px 40px 20px;
    background: var(--hero); border-bottom: 1px solid rgba(255,255,255,.08); box-shadow: 0 20px 40px rgba(0,0,0,.3); }
  .topbar[data-open="true"] .links { display: flex; }
  .links a { padding: 16px 0; font-size: 19px; font-weight: 600; color: var(--hero-ink); border-bottom: 1px solid rgba(255,255,255,.08); }
  .links a:last-child { border-bottom: 0; }
  .h1 { font-size: 84px; }
  .h2 { font-size: 48px; }
  .hero-grid { grid-template-columns: 1fr; gap: 36px; }
  .phone-wrap { margin: 0 auto; }
  .g2, .g3 { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr 1fr; }
  .author { grid-template-columns: 1fr; }
}

/* ---------- mobil ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .w { padding: 0 20px; }
  .sec, .sec.tight { padding: 64px 0; }
  .nav { height: 64px; }
  .links { padding: 4px 20px 16px; }
  section[id] { scroll-margin-top: 64px; }
  .logo { font-size: 20px; }
  .logo .delta { width: 24px; height: 24px; }
  .h1 { font-size: 64px; }
  .h2 { font-size: 40px; }
  .lead { font-size: 17px; }
  .hero-grid { padding: 28px 0 36px; }
  .phone-wrap { width: 273px; height: 591px; }
  .phone { transform: scale(.7); }
  .aud { grid-template-columns: 1fr; gap: 12px; }
  .aud-c { min-height: 0; padding: 24px; border-radius: 24px; }
  .aud-c .h3 { font-size: 30px; }
  .btn { height: 54px; font-size: 16px; width: 100%; white-space: normal; text-align: center; }
  .aud-c .btn, .coach .btn { align-self: stretch; }
  .tl { gap: 3px; }
  .tl span { height: 40px; font-size: 11px; border-radius: 6px; padding-bottom: 5px; }
  .steps { grid-template-columns: 1fr; gap: 20px; }
  .cards2 { grid-template-columns: 1fr; }
  .form { padding: 22px; border-radius: 24px; }
  .metric .v { font-size: 36px; }
}