/* Tike — bike tent landing page
   Layout: misty-forest hero with the angular TIKE mark cutting in from the left,
   then calm single-column sections on a mist-grey ground. */

:root{
  --mist:#eef2f0; --paper:#f8faf9; --ink:#15201c; --muted:#56635e; --line:#d3dcd8;
  --green:#44d7a8; --green-ink:#0b7656; --tree:#2a3531; --err:#c2412d;
  --f-display:"Archivo","Arial Black",system-ui,sans-serif;
  --f-body:"Instrument Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,Menlo,Consolas,monospace;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --mist:#0f1513; --paper:#151d1a; --ink:#e4ebe8; --muted:#9aa8a2; --line:#2a3632;
  --green:#44d7a8; --green-ink:#5fe3b8; --tree:#c9d3cf; --err:#ff8a73; color-scheme:dark}}
:root[data-theme="dark"]{
  --mist:#0f1513; --paper:#151d1a; --ink:#e4ebe8; --muted:#9aa8a2; --line:#2a3632;
  --green:#44d7a8; --green-ink:#5fe3b8; --tree:#c9d3cf; --err:#ff8a73; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{background:var(--mist);color:var(--ink);font-family:var(--f-body);font-size:1.0625rem;line-height:1.6;margin:0;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
img{max-width:100%;height:auto}
a{color:var(--green-ink)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--green);outline-offset:3px;border-radius:2px}
.wrap{max-width:68rem;margin-inline:auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
h1,h2,h3{font-family:var(--f-display);font-stretch:125%;line-height:1.08;text-wrap:balance;margin:0}
h2{font-size:clamp(1.6rem,1.1rem + 2vw,2.5rem);font-weight:800;letter-spacing:-.01em}
h3{font-size:1.05rem;font-weight:700;letter-spacing:.01em}
p{margin:0}
.eyebrow{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--green-ink);font-weight:500}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:1rem;top:-4rem;z-index:10;background:var(--ink);color:var(--mist);padding:.6rem 1rem;text-decoration:none;font-weight:600}
.skip:focus{top:1rem}

/* Header */
.site-head{position:relative;z-index:3}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:1.1rem}
.brand{display:flex;align-items:center;gap:.6rem;color:var(--ink);text-decoration:none}
.brand svg.mark{width:2.4rem;height:auto;aspect-ratio:600/345;color:var(--green)}
.brand svg.word{width:5.2rem;height:auto;aspect-ratio:590/76;color:var(--ink)}
.nav{display:flex;gap:1.4rem;flex-wrap:wrap}
.nav a{color:var(--ink);text-decoration:none;font-weight:500;font-size:.95rem;white-space:nowrap}
.nav a:hover{color:var(--green-ink)}
/* Language switcher (EN / CS) */
.nav{margin-left:auto}
.lang{display:flex;gap:.25rem;flex:none;font-family:var(--f-mono);font-size:.76rem;letter-spacing:.1em}
.lang a{color:var(--muted);text-decoration:none;padding:.3rem .5rem;line-height:1;border:1px solid transparent}
.lang a:hover{color:var(--ink)}
.lang a[aria-current="page"]{color:var(--ink);border-color:var(--ink)}
@media (max-width:640px){
  .site-head .wrap{flex-wrap:wrap;padding-block:.9rem .6rem}
  .nav{order:2;margin-left:0;width:100%;gap:1.1rem;overflow-x:auto;flex-wrap:nowrap;padding-bottom:.2rem;scrollbar-width:none}
  .nav::-webkit-scrollbar{display:none}
  .nav a{font-size:.88rem}
}

/* Hero */
.hero{position:relative;overflow:hidden;isolation:isolate}
.hero .hero-bg{position:absolute;inset:0;width:100%;height:100%;max-width:none;object-fit:cover;object-position:30% 55%;z-index:-3}
.hero::before{content:"";position:absolute;inset:0;z-index:-2;background:linear-gradient(180deg,color-mix(in srgb,var(--mist) 80%,transparent) 0%,color-mix(in srgb,var(--mist) 25%,transparent) 30%,transparent 60%),linear-gradient(90deg,color-mix(in srgb,var(--mist) 30%,transparent) 0%,color-mix(in srgb,var(--mist) 45%,transparent) 40%,color-mix(in srgb,var(--mist) 80%,transparent) 62%,color-mix(in srgb,var(--mist) 86%,transparent) 100%)}
.hero .slash{position:absolute;z-index:-1;left:-14%;top:8%;width:min(52rem,85%);height:auto;aspect-ratio:600/345;color:var(--green);opacity:.92}
.hero .wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);gap:2rem;padding-block:clamp(3rem,8vw,7rem) clamp(3.5rem,9vw,8rem)}
.hero-copy{grid-column:2;display:flex;flex-direction:column;gap:1.3rem;min-width:0}
.hero h1{font-size:clamp(2.1rem,1.2rem + 4.2vw,4.4rem);font-weight:800;text-transform:uppercase;letter-spacing:.01em}
.hero h1 em{font-style:normal;color:var(--green-ink)}
.lead{font-size:clamp(1.08rem,1rem + .4vw,1.3rem);max-width:34ch;color:var(--ink)}
.cta{display:flex;gap:.8rem;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.3rem;font-family:var(--f-display);font-stretch:112%;font-weight:700;font-size:.95rem;text-decoration:none;letter-spacing:.02em;border:2px solid var(--ink);color:var(--ink);background:transparent;cursor:pointer}
.btn.primary{background:var(--green);border-color:var(--green);color:#0c1a15;padding-right:1.8rem;clip-path:polygon(0 0,calc(100% - 12px) 0,100% 50%,calc(100% - 12px) 100%,0 100%)}
.btn:hover{filter:brightness(1.05)}
.btn[disabled]{opacity:.6;cursor:progress}
.specline{display:flex;flex-wrap:wrap;gap:.4rem 1.6rem;font-family:var(--f-mono);font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.specline b{color:var(--ink);font-weight:500}
@media (max-width:760px){
  .hero .wrap{grid-template-columns:1fr}
  .hero-copy{grid-column:1;padding-top:9rem}
  .hero .slash{left:-30%;top:1rem;width:150%}
  .hero::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(to bottom,transparent 0,transparent 30%,color-mix(in srgb,var(--mist) 82%,transparent) 48%,color-mix(in srgb,var(--mist) 82%,transparent) 100%)}
}

/* Sections */
section{scroll-margin-top:1rem}
.band{padding-block:clamp(3.5rem,8vw,6.5rem)}
.band.paper{background:var(--paper)}
.sec-head{display:flex;flex-direction:column;gap:.8rem;max-width:44rem;margin-bottom:2.5rem}
.sec-head p{color:var(--muted)}

/* Summary (key facts for readers and search agents) */
.summary{padding-block:clamp(2rem,5vw,3.5rem);border-bottom:1px solid var(--line)}
.summary .wrap{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:clamp(1.5rem,4vw,4rem);align-items:start}
.summary p{max-width:62ch;font-size:1.1rem}
.facts{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);gap:.35rem 1.2rem;font-size:.95rem;border-left:3px solid var(--green);padding-left:1rem}
.facts dt{font-family:var(--f-mono);font-size:.76rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding-top:.15rem}
.facts dd{margin:0}
@media (max-width:760px){.summary .wrap{grid-template-columns:1fr}}

/* Idea + diagram */
.idea{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:clamp(2rem,5vw,4.5rem);align-items:center}
.idea .text{display:flex;flex-direction:column;gap:1.1rem;min-width:0}
.idea .text p{max-width:60ch}
.quote{font-family:var(--f-display);font-stretch:112%;font-weight:600;font-size:1.25rem;line-height:1.35;border-left:4px solid var(--green);padding-left:1rem}
figure{margin:0}
figcaption{font-size:.85rem;color:var(--muted);margin-top:.6rem}
@media (max-width:820px){.idea{grid-template-columns:1fr}}

/* Benefits */
.benefits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border-top:2px solid var(--ink)}
.benefit{padding:1.4rem 1.4rem 1.6rem 0;display:flex;flex-direction:column;gap:.6rem;min-width:0}
.benefit+.benefit{padding-left:1.4rem;border-left:1px solid var(--line)}
.benefit .fig{font-family:var(--f-display);font-stretch:125%;font-weight:800;font-size:2rem;color:var(--green-ink);line-height:1}
.benefit p{color:var(--muted);font-size:.98rem}
@media (max-width:760px){.benefits{grid-template-columns:1fr}
  .benefit,.benefit+.benefit{padding-left:0;border-left:0}
  .benefit+.benefit{border-top:1px solid var(--line)}}

/* Steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:1rem;counter-reset:s}
.steps li{counter-increment:s;display:flex;flex-direction:column;gap:.6rem;padding-top:1rem;border-top:2px solid var(--line);min-width:0}
.steps li::before{content:counter(s);font-family:var(--f-display);font-stretch:125%;font-weight:800;font-size:1.6rem;color:var(--green-ink);line-height:1}
.steps p{color:var(--muted);font-size:.96rem}
@media (max-width:900px){.steps{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}

/* Specs */
.specs{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
.specs dl{margin:0;display:grid;grid-template-columns:auto minmax(0,1fr);border-top:2px solid var(--ink)}
.specs dt,.specs dd{padding:.85rem 0;border-bottom:1px solid var(--line);margin:0}
.specs dt{font-family:var(--f-mono);font-size:.82rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-right:1.5rem}
.specs dd{font-variant-numeric:tabular-nums}
@media (max-width:820px){.specs{grid-template-columns:1fr}}

/* Story + award */
.story{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
.story .text{display:flex;flex-direction:column;gap:1rem;min-width:0}
.story .text p{max-width:62ch}
.award{background:var(--ink);color:var(--mist);padding:1.8rem;display:flex;flex-direction:column;gap:1rem;clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%)}
.award .eyebrow{color:var(--green)}
.award h3{font-size:1.4rem;font-weight:800}
.award ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:.45rem}
.award li{display:flex;gap:.6rem;align-items:baseline}
.award li::before{content:"";width:.7rem;height:.7rem;background:var(--green);flex:none;transform:translateY(.05rem);clip-path:polygon(0 0,100% 50%,0 100%)}
.award small{color:color-mix(in srgb,var(--mist) 70%,transparent);font-size:.85rem}
@media (max-width:820px){.story{grid-template-columns:1fr}}

/* FAQ */
.faq{display:flex;flex-direction:column;border-top:2px solid var(--ink);max-width:48rem}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:1.1rem 2rem 1.1rem 0;font-weight:600;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:.2rem;top:.85rem;font-family:var(--f-display);font-size:1.4rem;color:var(--green-ink)}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 0 1.2rem;color:var(--muted);max-width:62ch}

/* Contact */
.contact{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
.contact h2{font-size:clamp(1.8rem,1.2rem + 2.6vw,3rem)}
.contact .sec-head{margin-bottom:0}
.fb{font-size:.95rem;color:var(--muted)}
@media (max-width:760px){.contact{grid-template-columns:1fr}}

/* Photos */
.photo-band{padding-block:0}
.photo-band figure{position:relative;isolation:isolate}
.photo-band figure::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(180deg,rgba(18,27,23,.9) 0,rgba(18,27,23,.45) 10%,rgba(18,27,23,0) 30%)}
.photo-band img{display:block;width:100%;height:auto;aspect-ratio:1600/886;max-height:85vh;object-fit:cover;object-position:center top}
.photo-band figcaption{position:absolute;z-index:1;left:0;bottom:0;margin:0;padding:.5rem max(16px,env(safe-area-inset-left,0px));background:color-mix(in srgb,var(--ink) 72%,transparent);color:var(--mist);font-family:var(--f-mono);font-size:.78rem;letter-spacing:.06em}
@media (max-width:640px){.photo-band figcaption{position:static;z-index:auto;display:block;width:100%;background:color-mix(in srgb,var(--ink) 88%,transparent);color:var(--mist);padding:.55rem max(16px,env(safe-area-inset-left,0px));font-size:.72rem;line-height:1.4}}
.render{background:#fff;border:1px solid var(--line);padding:1rem}
.render img{display:block;width:100%;height:auto}
.build-photos{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-bottom:2.5rem;align-items:start}
.build-photos img,.gallery img{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover}
.build-photos figcaption{font-family:var(--f-mono);font-size:.8rem;color:var(--muted);margin-top:.5rem}
.build-photos figcaption b{color:var(--green-ink);font-weight:500}
@media (max-width:760px){.build-photos{grid-template-columns:1fr}}
.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:auto auto;gap:.8rem}
.gallery a{display:block;position:relative;overflow:hidden}
.gallery a:first-child{grid-row:span 2;min-height:12rem}
.gallery a:first-child img{position:absolute;top:0;left:0;width:100%;height:100%;aspect-ratio:auto}
.gallery span{position:absolute;left:.5rem;bottom:.5rem;background:color-mix(in srgb,var(--ink) 75%,transparent);color:var(--mist);font-size:.78rem;padding:.2rem .5rem;font-family:var(--f-mono)}
.gallery img{transition:transform .4s ease}
.gallery a:hover img{transform:scale(1.03)}
@media (prefers-reduced-motion: reduce){.gallery img{transition:none}}
@media (max-width:760px){.gallery{grid-template-columns:1fr 1fr}.gallery a:first-child{grid-column:span 2;grid-row:auto;min-height:0}.gallery a:first-child img{position:static;height:auto;aspect-ratio:16/9}}
.status{display:inline-flex;align-items:center;gap:.5rem;align-self:flex-start;font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--ink);padding:.3rem .65rem;color:var(--ink);background:color-mix(in srgb,var(--mist) 70%,transparent)}
.status::before{content:"";width:.5rem;height:.5rem;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 30%,transparent)}

/* Form */
.form{display:flex;flex-direction:column;gap:1rem}
.form label{display:flex;flex-direction:column;gap:.35rem;font-family:var(--f-mono);font-size:.78rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.form input:not([type=checkbox]),.form textarea{font:inherit;font-family:var(--f-body);font-size:1rem;letter-spacing:0;text-transform:none;color:var(--ink);background:var(--mist);border:1px solid var(--line);border-bottom:2px solid var(--ink);padding:.75rem .8rem;border-radius:0;width:100%}
.form textarea{min-height:7rem;resize:vertical}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--green);box-shadow:0 0 0 3px color-mix(in srgb,var(--green) 30%,transparent)}
.form input[aria-invalid="true"],.form textarea[aria-invalid="true"]{border-bottom-color:var(--err)}
.form .check{flex-direction:row;align-items:flex-start;gap:.6rem;font-family:var(--f-body);font-size:.95rem;letter-spacing:0;text-transform:none;color:var(--ink);cursor:pointer}
.form .check input{width:1.1rem;height:1.1rem;margin:.2rem 0 0;accent-color:var(--green-ink);flex:none}
.form .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form button{align-self:flex-start;font:inherit;font-family:var(--f-display)}
.form-msg{font-size:.95rem;min-height:1.4em}
.form-msg.ok{color:var(--green-ink);font-weight:600}
.form-msg.err{color:var(--err)}
.form-note{font-size:.85rem;color:var(--muted)}

/* Thanks page */
.thanks{min-height:60vh;display:grid;place-items:center;text-align:center;padding-block:4rem}
.thanks .inner{display:flex;flex-direction:column;gap:1.2rem;align-items:center;max-width:36rem}

footer{border-top:1px solid var(--line)}
footer .wrap{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1.6rem;font-size:.88rem;color:var(--muted)}
footer svg{width:4rem;height:auto;aspect-ratio:590/76;color:var(--muted)}
footer nav{display:flex;gap:1rem;flex-wrap:wrap}
footer a{color:var(--muted)}