/* =========================================================
   TIANO — sdílený základ
   Tmavá luxusní minimalistika · tekutá rtuť · studená ocel
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;1,400;1,500;1,600&family=Onest:wght@300;400;500;600;700&display=swap');

:root{
  /* — barvy — */
  --bg:        #14181f;
  --bg-2:      #1c212b;
  --bg-3:      #272d39;
  --ink:       #f3f5fa;
  --ink-dim:   #aeb6c6;
  --ink-faint: #6c7689;
  --line:      rgba(255,255,255,.12);
  --line-soft: rgba(255,255,255,.07);

  /* studená modrá ocel (akcent) */
  --steel:      #8ba6c9;
  --steel-lite: #c2d4ec;
  --steel-deep: #34507a;
  --steel-glow: rgba(139,166,201,.35);

  /* chrom / rtuť */
  --chrome-hi: #f4f6fb;
  --chrome-mid:#aeb6c6;
  --chrome-lo: #2b3140;
  --chrome-grad: linear-gradient(150deg,#fbfdff 0%,#c9d2e2 22%,#7e879a 42%,#3a4150 56%,#9aa3b6 72%,#eef2f9 100%);
  --chrome-control: linear-gradient(145deg,#fbfdff 0%,#dce3ef 42%,#b4bfd0 72%,#eef2f8 100%);
  --chrome-text: linear-gradient(176deg,#ffffff 0%,#d6deec 30%,#8b94a8 52%,#cdd6e6 70%,#ffffff 100%);
  /* leštěný tekutý chrom (odraz prostředí — světlá obloha, tmavý horizont, světlá zem) */
  --mercury: linear-gradient(168deg,#ffffff 0%,#e6edf7 10%,#b3bdce 24%,#5b6576 38%,#191c22 51%,#2e353f 56%,#7c8598 70%,#d2dbea 85%,#ffffff 100%);
  --mercury-spec: radial-gradient(44% 34% at 33% 21%, rgba(255,255,255,.96) 0%, rgba(255,255,255,.4) 32%, rgba(255,255,255,0) 60%);

  /* glass */
  --glass:     rgba(255,255,255,.045);
  --glass-2:   rgba(255,255,255,.07);
  --glass-brd: rgba(255,255,255,.12);

  /* rytmus */
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 28px;
  --ease: cubic-bezier(.22,.61,.36,1);
  --container: 1280px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  background:
    radial-gradient(125% 85% at 50% -12%, #38404e 0%, rgba(56,64,78,0) 52%),
    linear-gradient(180deg, #232a34 0%, #1b212a 42%, #161b22 100%);
  background-attachment:fixed;
  color:var(--ink);
  font-family:'Onest',system-ui,sans-serif;
  font-weight:400;
  line-height:1.6;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
::selection{background:var(--steel-deep);color:#fff}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}

/* — typografie — */
.serif{font-family:'Playfair Display',Georgia,serif}
.italic{font-style:italic}
h1,h2,h3{font-family:'Playfair Display',Georgia,serif;font-weight:400;line-height:1.04;letter-spacing:-.01em}
.eyebrow{
  font-size:.74rem;letter-spacing:.32em;text-transform:uppercase;
  color:var(--steel);font-weight:500;
}
.dim{color:var(--ink-dim)}
.faint{color:var(--ink-faint)}

/* — kontejner — */
.wrap{max-width:var(--container);margin-inline:auto;padding-inline:clamp(20px,5vw,56px)}

/* =========================================================
   Chrom / tekutá rtuť — sdílené prvky
   ========================================================= */

/* lesklý chromový text */
.chrome-type{
  background:var(--chrome-text);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
  background-size:100% 140%;
}

/* gooey kontejner — kapky se slévají */
.mercury{position:absolute;inset:0;filter:url(#gooey);pointer-events:none}
.mercury .drop{
  position:absolute;border-radius:50%;
  background:var(--chrome-grad);
  background-size:180% 180%;
  mix-blend-mode:screen;
  opacity:.9;
}

/* statická chromová kapka (s odlesky) */
.chrome-blob{
  border-radius:50%;
  background:
    radial-gradient(120% 90% at 32% 22%, #ffffff 0%, rgba(255,255,255,.0) 26%),
    radial-gradient(80% 120% at 70% 85%, #cfd8e8 0%, rgba(207,216,232,0) 40%),
    conic-gradient(from 210deg at 50% 50%, #e9eef7, #8b94a8, #2b3140, #aeb6c6, #f4f6fb, #5a6273, #e9eef7);
  box-shadow:
    inset 0 2px 8px rgba(255,255,255,.6),
    inset 0 -14px 30px rgba(0,0,0,.55),
    0 30px 80px -20px rgba(0,0,0,.8);
}

/* tenká chromová stuha / linka */
.chrome-rule{height:1px;background:linear-gradient(90deg,transparent,var(--chrome-mid),transparent);opacity:.5}

/* =========================================================
   Glass
   ========================================================= */
.glass{
  background:var(--glass);
  backdrop-filter:blur(22px) saturate(140%);
  -webkit-backdrop-filter:blur(22px) saturate(140%);
  border:1px solid var(--glass-brd);
  box-shadow:0 1px 0 rgba(255,255,255,.08) inset,0 24px 60px -28px rgba(0,0,0,.7);
}

/* =========================================================
   Tlačítka
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;gap:.6em;
  padding:.95em 1.7em;border-radius:100px;
  font-size:.92rem;font-weight:500;letter-spacing:.01em;
  transition:transform .4s var(--ease),box-shadow .4s var(--ease),background .4s var(--ease);
  will-change:transform;
}
.btn:hover{transform:translateY(-2px)}
.btn-chrome{
  background:var(--chrome-grad);background-size:160% 160%;
  color:#10131a;font-weight:600;
  box-shadow:0 10px 30px -10px rgba(180,195,225,.5),inset 0 1px 0 rgba(255,255,255,.7);
}
.btn-chrome:hover{box-shadow:0 16px 44px -12px rgba(180,195,225,.7),inset 0 1px 0 rgba(255,255,255,.8)}
.btn-ghost{
  border:1px solid var(--glass-brd);background:var(--glass);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);color:var(--ink);
}
.btn-ghost:hover{background:var(--glass-2);border-color:rgba(255,255,255,.22)}

/* =========================================================
   Navigace (glass)
   ========================================================= */
.nav{position:fixed;top:0;left:0;right:0;z-index:90;transition:all .5s var(--ease)}
.nav-inner{
  width:min(var(--container),calc(100% - clamp(24px,6vw,56px)));
  margin:14px auto 0;
  display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;
  padding:.7rem .8rem .7rem 1.4rem;border-radius:100px;
  transition:all .5s var(--ease);
}
.nav.scrolled .nav-inner{background:var(--glass);backdrop-filter:blur(22px) saturate(150%);-webkit-backdrop-filter:blur(22px) saturate(150%);border:1px solid var(--glass-brd);box-shadow:0 18px 50px -26px rgba(0,0,0,.8)}
.brand{grid-column:1;justify-self:start;font-family:'Playfair Display',serif;font-style:italic;font-size:1.5rem;letter-spacing:.02em}
.brand b{font-style:normal;font-weight:600;letter-spacing:.18em;font-size:.78em}
.nav-links{grid-column:2;display:flex;gap:2rem;align-items:center;justify-self:center;font-size:.92rem}
.nav-links a{color:var(--ink-dim);transition:color .3s}
.nav-links a:hover{color:var(--ink)}
.nav-right{grid-column:3;display:flex;align-items:center;justify-self:end;gap:1.2rem}

/* jazykový přepínač bude viditelný až po doplnění plných překladů */
.lang{display:none;gap:.1rem;align-items:center;font-size:.76rem;letter-spacing:.12em;font-weight:500}
.lang button{padding:.35em .55em;border-radius:8px;color:var(--ink-faint);transition:color .3s,background .3s;text-transform:uppercase}
.lang button.on{color:var(--ink);background:var(--glass-2)}
.lang button:hover{color:var(--ink)}

.nav-burger{display:none;flex:0 0 auto;position:relative;z-index:1;flex-direction:column;align-items:center;justify-content:center;gap:5px;width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.45);background:var(--chrome-grad);box-shadow:0 14px 34px -18px rgba(0,0,0,.85),inset 0 1px 0 rgba(255,255,255,.7)}
.nav-burger span{display:block;width:22px;height:1.5px;background:#10131a;transition:.3s}

/* mobilní menu */
.mobile-menu{position:fixed;inset:0;z-index:88;display:flex;flex-direction:column;justify-content:center;align-items:center;gap:1.6rem;
  opacity:0;visibility:hidden;transform:scale(1.04);transition:opacity .5s var(--ease),transform .5s var(--ease),visibility .5s}
.mobile-menu.open{opacity:1;visibility:visible;transform:none}
.mobile-menu a{font-family:'Playfair Display',serif;font-style:italic;font-size:2rem;color:var(--ink)}

/* portfolio/content filtry sdílené napříč homepage a podstránkami */
.b-filter{display:flex;gap:.6rem;flex-wrap:wrap;margin-bottom:clamp(28px,4vw,44px)}
.b-filter button{padding:.6em 1.2em;border-radius:100px;border:1px solid var(--line);font-size:.86rem;color:var(--ink-dim);transition:.4s var(--ease)}
.b-filter button:hover{border-color:rgba(255,255,255,.25);color:var(--ink)}
.b-filter button.on{background:var(--chrome-control);color:#101722;font-weight:700;border-color:transparent;box-shadow:inset 0 1px 0 rgba(255,255,255,.76),0 8px 20px -14px rgba(190,204,228,.72)}

/* fullscreen náhled fotografií */
.photo-item{cursor:zoom-in}
.photo-item .ov{display:none!important}
.lightbox{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:clamp(18px,4vw,54px);background:rgba(6,7,10,.96);opacity:0;visibility:hidden;transition:opacity .3s var(--ease),visibility .3s}
.lightbox.open{opacity:1;visibility:visible}
.lightbox-img{display:block;max-width:min(100%,1440px);max-height:calc(100svh - 52px);object-fit:contain;border-radius:var(--r-sm);box-shadow:0 24px 70px -24px rgba(0,0,0,.9)}
.lightbox-btn{position:absolute;z-index:1;display:grid;place-items:center;width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.18);background:rgba(20,24,31,.82);color:var(--ink);font-size:2rem;line-height:1;transition:background .25s var(--ease),border-color .25s var(--ease)}
.lightbox-btn:hover{background:rgba(52,60,74,.94);border-color:rgba(255,255,255,.32)}
.lightbox-close{top:18px;right:18px;font-size:1.7rem}
.lightbox-prev{left:clamp(12px,3vw,34px);top:50%;transform:translateY(-50%)}
.lightbox-next{right:clamp(12px,3vw,34px);top:50%;transform:translateY(-50%)}
.lightbox-count{position:absolute;left:50%;bottom:18px;transform:translateX(-50%);color:var(--ink-dim);font-size:.78rem;letter-spacing:.16em}

/* =========================================================
   Footer
   ========================================================= */
.footer{border-top:1px solid var(--line-soft);padding:clamp(48px,7vw,90px) 0 40px;margin-top:clamp(60px,10vw,140px)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px}
.footer h4{font-family:'Onest';font-size:.74rem;letter-spacing:.26em;text-transform:uppercase;color:var(--ink-faint);font-weight:600;margin-bottom:1.2rem}
.footer a{display:block;color:var(--ink-dim);padding:.3rem 0;transition:color .3s}
.footer a:hover{color:var(--ink)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-top:clamp(40px,6vw,72px);padding-top:28px;border-top:1px solid var(--line-soft);font-size:.82rem;color:var(--ink-faint)}
.footer-bottom a{color:var(--ink-faint);transition:color .3s}
.footer-bottom a:hover{color:var(--ink)}

/* =========================================================
   Reveal on scroll
   ========================================================= */
.reveal{opacity:0;transform:translateY(28px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* =========================================================
   Chromové 3D objekty (reálné prvky z reference)
   ========================================================= */
.chrome-obj{position:absolute;pointer-events:none;z-index:4;filter:drop-shadow(0 24px 46px rgba(0,0,0,.55));will-change:transform}
@keyframes floatA{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-16px) rotate(3deg)}}
@keyframes floatB{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(14px) rotate(-4deg)}}
@keyframes floatC{0%,100%{transform:translateY(0) rotate(0deg)}50%{transform:translateY(-22px) rotate(-2deg)}}
.float-a{animation:floatA 7.5s var(--ease) infinite}
.float-b{animation:floatB 9s var(--ease) infinite}
.float-c{animation:floatC 11s var(--ease) infinite}

/* tekutý morphing tvar kapek rtuti (ne kulatý — vlnící se, špičatý) */
@keyframes liquidMorph{
  0%,100%{border-radius:64% 36% 58% 42% / 56% 62% 38% 44%}
  33%{border-radius:42% 58% 36% 64% / 62% 40% 60% 38%}
  66%{border-radius:54% 46% 64% 36% / 40% 56% 44% 60%}
}

/* malá hvězda jako akcent v eyebrow / nadpisech */
.spark{display:inline-block;width:1.05em;height:1.05em;background:url('chrome/star-big.png?v=hq') center/contain no-repeat;vertical-align:-.2em;margin-right:.55em;filter:drop-shadow(0 2px 6px rgba(0,0,0,.4))}

/* chromové play tlačítko v portfoliu */
.play img{width:56%;height:56%;object-fit:contain;filter:drop-shadow(0 2px 4px rgba(0,0,0,.4))}

/* chrome chevron na kartách služeb (hover) */
.serv-go{position:absolute;right:26px;bottom:30px;width:38px;opacity:0;transform:translateX(-10px);transition:opacity .5s var(--ease),transform .5s var(--ease);pointer-events:none;filter:drop-shadow(0 6px 12px rgba(0,0,0,.5))}
.b-serv .c:hover .serv-go{opacity:1;transform:translateX(0)}

/* tekuté chromové kapky (3D PNG) */
.c-blobs{position:absolute;inset:0;pointer-events:none;z-index:1;overflow:hidden}
.c-blobs .blob{position:absolute;filter:drop-shadow(0 26px 50px rgba(0,0,0,.45));will-change:transform;opacity:.96}
.c-blobs .bl0{width:min(20vw,232px);left:-2%;top:33%;animation:blobF0 17s var(--ease) infinite}
.c-blobs .bl1{width:min(12vw,142px);left:9%;top:16%;animation:blobF1 14s var(--ease) infinite}
.c-blobs .bl2{width:min(16vw,200px);right:0%;top:36%;animation:blobF2 15s var(--ease) infinite}
.c-blobs .bl3{width:min(9vw,108px);right:11%;top:66%;animation:blobF3 12s var(--ease) infinite}
@keyframes blobF0{0%,100%{transform:translate(0,0) rotate(0deg)}50%{transform:translate(-6%,-9%) rotate(4deg)}}
@keyframes blobF1{0%,100%{transform:translate(0,0) rotate(0deg)}50%{transform:translate(8%,8%) rotate(-5deg)}}
@keyframes blobF2{0%,100%{transform:translate(0,0) rotate(0deg)}50%{transform:translate(-8%,10%) rotate(6deg)}}
@keyframes blobF3{0%,100%{transform:translate(0,0) rotate(0deg)}50%{transform:translate(12%,-14%) rotate(-4deg)}}
.a-cta-merc .blob{position:absolute;filter:drop-shadow(0 24px 50px rgba(0,0,0,.45));opacity:.92;animation:blobF1 16s var(--ease) infinite}
/* obsah CTA nad dekorační vrstvou kapek */
.a-cta > *:not(.a-cta-merc){position:relative;z-index:2}

/* odkaz „Vše →" u hlaviček sekcí */
.more-link{display:inline-flex;align-items:center;gap:.5rem;margin-top:1rem;color:var(--steel-lite);font-size:.92rem;font-weight:500;transition:gap .3s var(--ease)}
.more-link:hover{gap:.9rem}
.more-link img{width:22px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.5))}

@media(max-width:880px){
  body{background-attachment:scroll}
  .nav-inner{grid-template-columns:auto minmax(0,1fr);padding:.62rem .7rem .62rem 1.1rem}
  .nav-links{display:none}
  .nav,.nav-inner{transition:none}
  .nav.scrolled .nav-inner{background:linear-gradient(135deg,rgba(36,42,53,.96),rgba(20,24,31,.92));backdrop-filter:none;-webkit-backdrop-filter:none;border:1px solid rgba(255,255,255,.13);box-shadow:0 14px 34px -22px rgba(0,0,0,.9)}
  .nav-burger{display:flex;backdrop-filter:none;-webkit-backdrop-filter:none}
  .nav-right{grid-column:2;gap:.7rem}
  .mobile-menu.glass{background:rgba(20,24,31,.98);backdrop-filter:none;-webkit-backdrop-filter:none}
  .reveal{opacity:1;transform:none;transition:none}
  .btn{will-change:auto}
  .chrome-obj,.c-blobs .blob,.a-cta-merc .blob{animation:none!important;will-change:auto}
  .c-hero > .chrome-obj{animation:mobileChromeFloat 15s ease-in-out infinite!important;will-change:transform}
  .c-hero > .chrome-obj.float-c{animation-delay:-6s!important}
  .c-blobs .bl0{animation:mobileBlobFloat 16s ease-in-out infinite!important;will-change:transform}
  .c-blobs .bl2{animation:mobileBlobFloatAlt 19s ease-in-out infinite!important;will-change:transform}
  .c-blobs .blob{filter:none}
  .a-cta-merc{display:block;filter:none!important;opacity:.24!important}
  .a-cta-merc .blob:first-child{animation:mobileBlobFloat 18s ease-in-out infinite!important;will-change:transform}
  .c-marq .row{animation:cMarq 46s linear infinite!important}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@keyframes mobileChromeFloat{
  0%,100%{transform:translate3d(0,0,0) rotate(0deg)}
  50%{transform:translate3d(0,-9px,0) rotate(2deg)}
}
@keyframes mobileBlobFloat{
  0%,100%{transform:translate3d(0,0,0) rotate(0deg)}
  50%{transform:translate3d(6px,-8px,0) rotate(2deg)}
}
@keyframes mobileBlobFloatAlt{
  0%,100%{transform:translate3d(0,0,0) rotate(0deg)}
  50%{transform:translate3d(-7px,7px,0) rotate(-2deg)}
}
@media(max-width:640px){
  .nav-inner{width:calc(100% - 24px);margin-top:10px}
  .nav-right .btn{display:none}
  .lang{font-size:.7rem}
  .lang button{padding:.3em .48em}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{align-items:flex-start;flex-direction:column}
  .b-filter{gap:.45rem;overflow-x:auto;flex-wrap:nowrap;margin-inline:-20px;padding:0 20px 4px;scrollbar-width:none}
  .b-filter::-webkit-scrollbar{display:none}
  .b-filter button{flex:0 0 auto;font-size:.8rem;padding:.55em 1em}
  .lightbox{padding:58px 12px 52px}
  .lightbox-btn{width:42px;height:42px}
  .lightbox-prev{left:10px}
  .lightbox-next{right:10px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important}
}