/* ============================================================
   kalkulacka.css — „Koľko stojí moja nehnuteľnosť?"
   Nadväzuje na nehnutelnost/detail.css + lp.css. Prefix .kx-
   ============================================================ */

/* [hidden] musí prebiť display:flex nižšie — inak sa skryté kroky zobrazujú */
.kx-card [hidden], .kx-actions[hidden], .kx-after[hidden], footer[hidden]{display:none !important}

/* ---------- funnel na celú obrazovku ----------
   Jedna otázka = jedna obrazovka, nič naokolo. Kým sa počíta, na stránke
   nie je ani hlavička, ani pätička — všetko pod výsledkom odkryje až
   `kalkulacka:hotovo` a stage vtedy dostane .done a pustí centrovanie.  */
/* detail.css dáva <main> padding-block kvôli sticky topbaru — ten tu nie je
   a funnel musí sedieť na hrane okna, inak nad ním svieti biely pruh */
main{padding-block:0}
.kx-after{padding-block:0 clamp(30px,5vw,60px)}

.kx-prog{position:fixed;top:0;left:0;right:0;height:4px;background:rgba(255,255,255,.15);z-index:120}
.kx-prog i{display:block;height:100%;width:10%;background:#fff;border-radius:0 3px 3px 0;
  transition:width .5s cubic-bezier(.22,1,.36,1)}

.kx-stage{position:relative;overflow:hidden;background:var(--dark);color:#fff;min-height:100dvh;
  display:flex;align-items:center;justify-content:center;
  padding:clamp(30px,6vh,60px) clamp(18px,4vw,32px)}
.kx-stage::before{content:"";position:absolute;width:760px;height:760px;right:-250px;top:-320px;pointer-events:none;
  background:radial-gradient(closest-side,rgba(122,176,208,.18),transparent 72%)}
.kx-stage.done{min-height:0;align-items:flex-start;padding-block:clamp(34px,6vh,72px)}

/* ---------- telo kalkulačky ---------- */
/* min-width:0 — flex položka sa inak nezmenší pod šírku svojho najširšieho
   riadku (rady čipov); poistka pre úzke displeje */
.kx-card{background:transparent;color:#fff;position:relative;width:100%;min-width:0}
.kx-inner{position:relative;width:100%;max-width:640px;margin:0 auto}

/* počítadlo otázok (samotný pruh je hore cez celú šírku) */
.kx-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:26px}
.kx-count{font-size:.8rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#8FA3AD;white-space:nowrap}
.kx-count b{color:#fff}
.kx-time{font-size:.8rem;color:#7d8f99;white-space:nowrap}
@media(max-width:520px){.kx-time{display:none}}

/* otázka */
.kx-q{animation:kxin .45s cubic-bezier(.22,1,.36,1) both}
@keyframes kxin{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:none}}
.kx-q h2{font-size:clamp(1.75rem,3.9vw,2.5rem);font-weight:600;letter-spacing:-.022em;line-height:1.14}
.kx-q h2 .it{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}
.kx-hint{margin-top:13px;color:#9EB0B9;font-size:clamp(1rem,1.25vw,1.08rem);line-height:1.62;max-width:48ch}
.kx-body{margin-top:24px}

/* dlaždice odpovedí */
.kx-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.kx-opts.one{grid-template-columns:1fr}
.kx-opts.three{grid-template-columns:repeat(3,1fr)}
@media(max-width:520px){.kx-opts.three{grid-template-columns:1fr 1fr}}
@media(max-width:420px){.kx-opts{grid-template-columns:1fr}}
.kx-opt{display:flex;flex-direction:column;align-items:flex-start;gap:3px;text-align:left;cursor:pointer;
  font-family:inherit;font-size:1.08rem;font-weight:600;color:#fff;padding:18px 19px;border-radius:15px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  transition:background .26s,border-color .26s,transform .4s cubic-bezier(.22,1,.36,1)}
.kx-opt small{font-size:.88rem;font-weight:400;color:#8FA3AD;line-height:1.42}
.kx-opt svg{width:23px;height:23px;stroke:#8FA3AD;fill:none;stroke-width:1.6;margin-bottom:8px;
  transition:stroke .26s,transform .45s cubic-bezier(.34,1.56,.64,1)}
.kx-opt:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.44);transform:translateY(-3px)}
.kx-opt:hover svg{stroke:#fff;transform:translateY(-2px)}
.kx-opt:focus-visible{outline:2px solid rgba(255,255,255,.75);outline-offset:3px}
.kx-opt:active{transform:translateY(-1px) scale(.985)}
.kx-opt.on{background:#fff;color:var(--ink);border-color:#fff}
.kx-opt.on small{color:#4A5C6A}
.kx-opt.on svg{stroke:var(--ink)}

/* multi-výber (čipy) */
.kx-chips{display:flex;flex-wrap:wrap;gap:9px}
.kx-chip{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-family:inherit;font-size:1rem;
  font-weight:500;color:#fff;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  padding:11px 17px;border-radius:999px;transition:background .24s,border-color .24s,transform .35s cubic-bezier(.22,1,.36,1)}
.kx-chip::before{content:"+";font-size:.98rem;color:#8FA3AD;transition:color .24s,transform .3s}
.kx-chip:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.kx-chip.on{background:#fff;color:var(--ink);border-color:#fff}
.kx-chip.on::before{content:"✓";color:var(--ink)}
.kx-chip:focus-visible{outline:2px solid rgba(255,255,255,.75);outline-offset:3px}

/* číselné pole */
.kx-num{position:relative;display:flex;align-items:center}
.kx-num input{width:100%;font-family:var(--serif);font-size:clamp(1.9rem,4.5vw,2.7rem);letter-spacing:-.02em;
  color:#fff;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:16px;
  padding:18px 74px 18px 22px;transition:border-color .26s,background .26s,box-shadow .26s}
.kx-num input:focus{outline:none;border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.12);
  box-shadow:0 0 0 4px rgba(255,255,255,.07)}
.kx-num input::-webkit-outer-spin-button,.kx-num input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.kx-unit{position:absolute;right:24px;font-family:var(--serif);font-size:clamp(1.3rem,3vw,1.8rem);color:#8FA3AD;pointer-events:none}
.kx-quick{display:flex;flex-wrap:wrap;gap:8px;margin-top:13px}
.kx-quick button{cursor:pointer;font-family:inherit;font-size:.92rem;font-weight:500;color:#C9D3D8;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);padding:8px 14px;border-radius:999px;
  transition:background .24s,color .24s,border-color .24s}
.kx-quick button:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34)}

/* textové pole (adresa) — nižšie a pokojnejšie než číselné, nie je to hlavné číslo kroku */
.kx-txt input{width:100%;font-family:inherit;font-size:1.12rem;font-weight:500;color:#fff;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:15px;
  padding:16px 20px;transition:border-color .26s,background .26s,box-shadow .26s}
.kx-txt input::placeholder{color:#7d8f99}
.kx-txt input:focus{outline:none;border-color:rgba(255,255,255,.6);background:rgba(255,255,255,.12);
  box-shadow:0 0 0 4px rgba(255,255,255,.07)}

/* dve polia v jednom kroku (plocha + pozemok) */
.kx-field + .kx-field{margin-top:4px}

/* áno/nie prepínač v tom istom kroku (výťah) — vyzerá ako čip, ale nie je to
   multi-výber, tak má vlastnú triedu a vlastný handler */
.kx-toggle{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-family:inherit;font-size:1rem;
  font-weight:500;color:#fff;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.16);
  padding:11px 17px;border-radius:999px;transition:background .24s,border-color .24s}
.kx-toggle::before{content:"○";font-size:.98rem;color:#8FA3AD;transition:color .24s}
.kx-toggle:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.kx-toggle.on{background:#fff;color:var(--ink);border-color:#fff}
.kx-toggle.on::before{content:"✓";color:var(--ink)}
.kx-toggle:focus-visible{outline:2px solid rgba(255,255,255,.75);outline-offset:3px}

/* mini-prepínače v tom istom kroku */
.kx-sublab{margin:24px 0 11px;font-size:clamp(1rem,1.25vw,1.06rem);line-height:1.58;color:#9EB0B9}
.kx-minirow{display:flex;flex-wrap:wrap;gap:10px 26px}
.kx-mini{display:inline-flex;align-items:center;gap:8px}
.kx-minilab{font-size:.92rem;font-weight:500;color:#8FA3AD;letter-spacing:.02em}
.kx-mini button{cursor:pointer;font-family:inherit;font-size:1rem;font-weight:500;color:#C9D3D8;
  min-width:42px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  padding:9px 13px;border-radius:999px;transition:background .24s,color .24s,border-color .24s}
.kx-mini button:hover{background:rgba(255,255,255,.14);color:#fff;border-color:rgba(255,255,255,.34)}
.kx-mini button.on{background:#fff;color:var(--ink);border-color:#fff}
.kx-mini button:focus-visible{outline:2px solid rgba(255,255,255,.75);outline-offset:3px}

/* select lokality */
.kx-select select{width:100%;font-family:inherit;font-size:1.16rem;font-weight:500;color:#fff;cursor:pointer;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:15px;padding:18px 48px 18px 20px;
  appearance:none;-webkit-appearance:none;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat:no-repeat;background-position:right 18px center;background-size:16px;
  transition:border-color .26s,background-color .26s}
.kx-select select:focus{outline:none;border-color:rgba(255,255,255,.6);background-color:rgba(255,255,255,.12)}
.kx-select select option{color:#11212D;background:#fff}

/* vlastný rozbaľovač — zoznam v natívnom <select> kreslí operačný systém
   a naštýlovať sa nedá. Triedu .kx-dd pridáva JS, takže bez JS ostane
   funkčný pôvodný <select>. */
.kx-select.kx-dd{position:relative}
.kx-select.kx-dd select{display:none}
.kx-dd-btn{display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;cursor:pointer;
  font-family:inherit;font-size:1.16rem;font-weight:500;text-align:left;color:#8FA3AD;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.18);border-radius:15px;padding:18px 20px;
  transition:border-color .26s,background-color .26s}
.kx-dd-btn.sel{color:#fff}
.kx-dd-btn:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.34)}
.kx-dd-btn:focus-visible{outline:2px solid rgba(255,255,255,.75);outline-offset:3px}
.kx-dd-btn svg{width:17px;height:17px;flex:none;stroke:#8FA3AD;fill:none;stroke-width:2;
  transition:transform .28s cubic-bezier(.22,1,.36,1),stroke .24s}
.kx-dd-btn[aria-expanded="true"]{border-color:rgba(255,255,255,.55);background:rgba(255,255,255,.12)}
.kx-dd-btn[aria-expanded="true"] svg{transform:rotate(180deg);stroke:#fff}

.kx-dd-panel{position:absolute;left:0;right:0;top:calc(100% + 8px);z-index:40;padding:7px;
  max-height:min(48vh,400px);overflow-y:auto;overscroll-behavior:contain;
  background:#11212D;border:1px solid rgba(255,255,255,.2);border-radius:15px;
  box-shadow:0 26px 60px -20px rgba(0,0,0,.75);
  animation:kxdd .2s cubic-bezier(.22,1,.36,1) both}
/* ak sa panel nezmestí pod tlačidlo, JS mu dá .hore a otvorí sa nahor */
.kx-dd-panel.hore{top:auto;bottom:calc(100% + 8px);animation-name:kxddh}
@keyframes kxdd{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:none}}
@keyframes kxddh{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
.kx-dd-opt{display:block;width:100%;text-align:left;cursor:pointer;font-family:inherit;
  font-size:1.05rem;font-weight:500;color:#DCE3E4;background:transparent;border:none;
  padding:13px 15px;border-radius:10px;transition:background .16s,color .16s}
.kx-dd-grp{padding:13px 15px 6px;font-size:.7rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:#7d8f99}
.kx-dd-grp:first-child{padding-top:8px}
.kx-dd-opt:hover,.kx-dd-opt.act{background:rgba(255,255,255,.11);color:#fff}
.kx-dd-opt[aria-selected="true"]{background:#fff;color:var(--ink)}
.kx-dd-panel::-webkit-scrollbar{width:10px}
.kx-dd-panel::-webkit-scrollbar-thumb{background:rgba(255,255,255,.18);border:3px solid #11212D;border-radius:99px}

/* navigácia */
.kx-nav{display:flex;align-items:center;gap:11px;margin-top:22px}
.kx-next{flex:1;justify-content:center;background:#fff;color:var(--ink);font-weight:600;margin-top:0}
.kx-next:hover{background:var(--bg-2)}
.kx-skip{background:transparent;border:none;cursor:pointer;font-family:inherit;font-size:.96rem;color:#8FA3AD;
  text-decoration:underline;text-underline-offset:3px;padding:6px 2px;transition:color .24s}
.kx-skip:hover{color:#fff}
.kx-err{margin-top:13px;background:rgba(179,38,30,.18);border:1px solid rgba(255,120,110,.4);color:#ffb4ad;
  font-size:.98rem;padding:12px 15px;border-radius:10px;animation:shake .45s cubic-bezier(.36,.07,.19,.97)}

/* kontakt v spodnom formulári je už overený a needitovateľný */
.lf-ok{margin-left:7px;font-size:.74rem;font-weight:700;letter-spacing:.06em;color:#3f8f63}
.lead-card input[readonly]{opacity:.72;cursor:default}

/* ---------- brána pred výsledkom (kontakt + SMS kód) ---------- */
.kx-gate-step{font-size:.74rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;
  color:#8FA3AD;margin-bottom:14px}
.kx-gate .kx-field + .kx-field{margin-top:9px}
.kx-gate-note{margin-top:15px;font-size:.86rem;line-height:1.6;color:#7d8f99;max-width:46ch}
.kx-gate-note a{color:#9EB0B9;text-decoration:underline;text-underline-offset:2px}
/* pole na kód — široké medzery medzi číslicami, nech sa dá odkontrolovať okom */
.kx-code input{text-align:center;letter-spacing:.42em;padding-right:22px;font-family:var(--serif)}
.kx-code input::placeholder{letter-spacing:.3em;color:#41535d}

/* ---------- výpočtová medzihra ---------- */
.kx-calc{text-align:center;padding:clamp(30px,6vw,64px) 0}
.kx-spin{width:56px;height:56px;margin:0 auto 24px;border-radius:50%;
  border:2px solid rgba(255,255,255,.16);border-top-color:#fff;animation:kxspin .9s linear infinite}
@keyframes kxspin{to{transform:rotate(360deg)}}
.kx-calc h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.5rem,3vw,2rem);letter-spacing:-.01em}
.kx-steps{list-style:none;margin:22px auto 0;padding:0;max-width:340px;text-align:left;
  display:flex;flex-direction:column;gap:11px}
.kx-steps li{display:flex;align-items:center;gap:11px;font-size:1.02rem;color:#5f727c;transition:color .4s}
.kx-steps li::before{content:"○";font-size:.98rem}
.kx-steps li.on{color:#fff}
.kx-steps li.on::before{content:"✓";color:#8FD3A8}

/* ---------- výsledok ---------- */
.kx-res{animation:kxin .6s cubic-bezier(.22,1,.36,1) both}
.kx-verdict{display:inline-flex;align-items:center;gap:10px;font-size:.78rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;padding:9px 17px;border-radius:999px;background:rgba(143,211,168,.16);
  color:#8FD3A8;border:1px solid rgba(143,211,168,.35)}
.kx-verdict.warn{background:rgba(224,161,27,.16);color:#EFC471;border-color:rgba(224,161,27,.4)}
.kx-res h2{font-size:clamp(1.9rem,4.4vw,3.1rem);font-weight:600;letter-spacing:-.026em;line-height:1.06;margin-top:20px}
.kx-res h2 .it{font-family:var(--serif);font-style:italic;font-weight:400;letter-spacing:0}
.kx-res .kx-lead{margin-top:17px;color:#C2CCD1;font-size:clamp(1.06rem,1.35vw,1.16rem);line-height:1.68;max-width:52ch}
.kx-res .kx-lead b{color:#fff;font-weight:600}

/* hlavné číslo */
.kx-hero-num{margin-top:28px;padding:26px 28px;border-radius:20px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16)}
.kx-hero-num .lbl{font-size:.74rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#8FA3AD}
.kx-hero-num .val{font-family:var(--serif);font-size:clamp(2.6rem,7vw,4rem);letter-spacing:-.03em;line-height:1;margin-top:12px}
.kx-hero-num .val.pos{color:#8FD3A8}
.kx-hero-num .sub{margin-top:12px;font-size:1rem;color:#9EB0B9;line-height:1.6}

/* rozpis */
.kx-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px;margin-top:11px}
@media(max-width:560px){.kx-grid{grid-template-columns:1fr}}
.kx-box{padding:20px 22px;border-radius:16px;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.13)}
.kx-box .lbl{font-size:.73rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#8FA3AD}
.kx-box .val{font-family:var(--serif);font-size:clamp(1.5rem,3.4vw,2rem);letter-spacing:-.02em;margin-top:9px;line-height:1.1}
.kx-box .val.rng{font-size:clamp(1.3rem,3vw,1.7rem);white-space:nowrap}
.kx-box .note{margin-top:9px;font-size:.93rem;color:#9EB0B9;line-height:1.55}
.kx-box.hl{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.26)}

/* riadkový rozpis */
.kx-rows{margin-top:11px;border-radius:16px;background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.13);padding:6px 22px}
.kx-rows>div{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding:14px 0;
  border-bottom:1px solid rgba(255,255,255,.09)}
.kx-rows>div:last-child{border-bottom:none}
.kx-rows .n{color:#C2CCD1;font-size:1.03rem;line-height:1.42}
.kx-rows .n small{display:block;color:#8B9CA5;font-size:.89rem;margin-top:3px}
.kx-rows .v{font-weight:600;font-size:1.09rem;white-space:nowrap;font-variant-numeric:tabular-nums}
.kx-rows .v.pos{color:#8FD3A8}
.kx-rows .v.neg{color:#F0A9A2}

.kx-h3{font-size:.76rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#8FA3AD;
  margin:34px 0 14px;display:flex;align-items:center;gap:12px}
.kx-h3::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.14)}

/* upozornenie / tip */
.kx-tip{margin-top:11px;display:flex;gap:13px;padding:18px 20px;border-radius:16px;
  background:rgba(122,176,208,.12);border:1px solid rgba(122,176,208,.3);font-size:1.02rem;line-height:1.64;color:#DCE3E4}
.kx-tip.warn{background:rgba(224,161,27,.12);border-color:rgba(224,161,27,.32)}
.kx-tip svg{width:20px;height:20px;flex:none;margin-top:1px;stroke:#8FB8D3;fill:none;stroke-width:1.8}
.kx-tip.warn svg{stroke:#EFC471}
.kx-tip b{color:#fff}

/* predpoklady */
.kx-assume{margin-top:11px;border-radius:16px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.11);
  overflow:hidden}
.kx-assume summary{cursor:pointer;list-style:none;padding:18px 22px;font-size:1rem;font-weight:600;color:#DCE3E4;
  display:flex;align-items:center;justify-content:space-between;gap:12px;transition:color .24s}
.kx-assume summary::-webkit-details-marker{display:none}
.kx-assume summary::after{content:"▾";color:#8FA3AD;transition:transform .3s}
.kx-assume[open] summary::after{transform:rotate(180deg)}
.kx-assume summary:hover{color:#fff}
.kx-assume .inner{padding:0 22px 22px;font-size:.96rem;color:#9EB0B9;line-height:1.7}
.kx-assume ul{margin:0;padding-left:18px}
.kx-assume li{margin-bottom:6px}
.kx-assume li b{color:#DCE3E4;font-weight:600}

.kx-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:30px}
.kx-actions .pillbtn{background:#fff;color:var(--ink);font-weight:600}
.kx-actions .pillbtn:hover{background:var(--bg-2)}
.kx-actions .ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1.5px rgba(255,255,255,.42)}
.kx-actions .ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- „ako to počítam" (svetlá sekcia) ---------- */
.kx-how{margin-top:clamp(56px,8vw,110px)}
.kx-facts{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin-top:clamp(26px,3vw,42px)}
@media(max-width:900px){.kx-facts{grid-template-columns:1fr 1fr}}
@media(max-width:520px){.kx-facts{grid-template-columns:1fr}}
.kx-fact{background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);padding:24px 22px;
  transition:transform .45s cubic-bezier(.22,1,.36,1),border-color .35s}
.kx-fact:hover{transform:translateY(-4px);border-color:var(--accent)}
.kx-fact .fi{width:44px;height:44px;border-radius:13px;background:var(--bg-2);display:grid;place-items:center;margin-bottom:16px}
.kx-fact .fi svg{width:21px;height:21px;stroke:var(--accent);fill:none;stroke-width:1.7}
.kx-fact h3{font-size:1.12rem;font-weight:600;letter-spacing:-.01em;margin-bottom:8px}
.kx-fact p{color:var(--ink-2);font-size:1rem;line-height:1.62}

.kx-disc{margin-top:clamp(30px,4vw,46px);background:var(--bg-2);border-radius:18px;padding:20px 24px;
  font-size:.96rem;color:var(--ink-2);line-height:1.66;max-width:72ch}
.kx-disc b{color:var(--ink)}

/* ---------- mobil ----------
   Jedna otázka = jedna obrazovka platí aj na telefóne. Pri štyroch dlaždiciach
   s popiskom sa to na 390×660 nezmestilo a posledná možnosť aj tlačidlo Späť
   ostali pod hranou — tu sa všetko sťahuje, nie zmenšuje na nečitateľné. */
@media(max-width:560px){
  .kx-stage{padding:clamp(20px,3.5vh,38px) 18px}
  .kx-top{margin-bottom:16px}
  .kx-q h2{font-size:clamp(1.5rem,6.4vw,1.95rem);line-height:1.13}
  .kx-hint{margin-top:9px;font-size:.97rem;line-height:1.5}
  .kx-body{margin-top:17px}

  .kx-opts{gap:8px}
  .kx-opt{padding:13px 16px;font-size:1.02rem;border-radius:13px;gap:2px}
  .kx-opt small{font-size:.83rem;line-height:1.34}
  .kx-opt svg{width:20px;height:20px;margin-bottom:5px}

  .kx-chips{gap:7px}
  .kx-chip,.kx-toggle{font-size:.94rem;padding:9px 14px}

  .kx-num input{padding:15px 60px 15px 18px}
  .kx-unit{right:20px}
  .kx-txt input{padding:14px 17px;font-size:1.04rem}
  .kx-quick{gap:7px;margin-top:10px}
  /* rýchle sumy sú na dotyk — pod ~40 px sa do nich na telefóne trafí ťažko */
  .kx-quick button{font-size:.89rem;padding:10px 14px}

  .kx-sublab{margin:16px 0 9px;font-size:.97rem;line-height:1.5}
  .kx-nav{margin-top:16px}

  /* výsledok — riadkový rozpis nech nemá zbytočné okraje */
  .kx-rows{padding:4px 17px}
  .kx-rows>div{padding:12px 0;gap:12px}
  .kx-box{padding:17px 18px}
  .kx-hero-num{padding:22px 20px}
  .kx-tip{padding:16px 17px;font-size:.98rem}
  .kx-assume summary{padding:16px 18px}
  .kx-assume .inner{padding:0 18px 18px}
}

/* nízke obrazovky (staršie iPhony SE/8 s lištou prehliadača, telefón naležato) —
   pri otázke so štyrmi dlaždicami tu chýbalo pár desiatok pixelov a tlačidlá
   navigácie končili tesne pod hranou. Zámerne bez ohľadu na šírku. */
@media(max-height:620px){
  .kx-stage{padding-block:14px}
  .kx-top{margin-bottom:12px}
  .kx-q h2{font-size:clamp(1.35rem,5.8vw,1.75rem);line-height:1.14}
  .kx-hint{margin-top:7px;font-size:.93rem;line-height:1.45}
  .kx-body{margin-top:13px}
  .kx-opts{gap:7px}
  .kx-opt{padding:11px 15px;font-size:.99rem}
  .kx-opt small{font-size:.81rem;line-height:1.3}
  .kx-opt svg{margin-bottom:4px}
  .kx-sublab{margin:13px 0 8px}
  .kx-quick{margin-top:9px}
  .kx-quick button{padding:6px 11px}
  .kx-nav{margin-top:13px}
  /* číslo je tu hrdina obrazovky, ale na 390 px výšky sa dve polia pod sebou
     (plocha + pozemok) inak nezmestia */
  .kx-num input{font-size:clamp(1.5rem,4vw,2rem);padding:12px 56px 12px 18px}
  .kx-unit{font-size:clamp(1.1rem,2.4vw,1.4rem)}
  .kx-txt input{padding:12px 17px}
}

@media(prefers-reduced-motion:reduce){
  .kx-q,.kx-res{animation:none}
  .kx-opt,.kx-chip,.kx-fact,.kx-num input,.kx-bar i{transition:none}
  .kx-spin{animation:none}
}