/* Self-hosted fonts (no Google requests). Archivo variable: weight 100–900, width 62–125%. */
/* Self-hosted fonts (no Google requests – faster, GDPR-friendly). Archivo variable: weight 100–900, width 62–125%. */
@font-face{font-family:"Archivo";font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(../fonts/archivo-latin-wdth-normal.woff2) format("woff2-variations"),url(../fonts/archivo-latin-wdth-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Archivo";font-style:normal;font-display:swap;font-weight:100 900;font-stretch:62% 125%;src:url(../fonts/archivo-latin-ext-wdth-normal.woff2) format("woff2-variations"),url(../fonts/archivo-latin-ext-wdth-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:500;src:url(../fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-display:swap;font-weight:500;src:url(../fonts/jetbrains-mono-latin-ext-500-normal.woff2) format("woff2");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* VoltGlass.lt — one product: switchable smart film.
   Mobile first. One accent (volt) = "power on". Never volt text on white. */
:root{
  --paper:#F3F5F6; --white:#fff; --ink:#0B0E11; --muted:#5A626A; --line:#D3DADF;
  --night:#0B0E11; --nmuted:#9AA1A9; --nline:#262B31;
  --volt:#D6FF2E; --err:#B42318;
  --f:"Archivo","Helvetica Neue",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --gut:16px; --max:1240px; --nav-h:60px; --r:14px;
  --ease:cubic-bezier(.7,0,.2,1);
  --nav-bg:rgba(243,245,246,.94); --nav-line:rgba(11,14,17,.08); --media:#cfd6db;
  color-scheme:light;
}
/* Dark theme: set on <html data-theme> by the inline head script (saved choice, else the system setting).
   --night stays dark in both themes: it's the text colour on volt and the quote/footer background. */
:root[data-theme=dark]{
  --paper:#121519; --white:#1A1E23; --ink:#EDF0F2; --muted:#9AA1A9; --line:#2A3037; --err:#FF8A80;
  --nav-bg:rgba(18,21,25,.94); --nav-line:rgba(255,255,255,.08); --media:#1d2125;
  color-scheme:dark;
}
@media (min-width:720px){:root{--gut:32px;--nav-h:64px}}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--nav-h) + 8px)}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f);font-size:17px;line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:clip}
img,video{display:block;max-width:100%}
a{color:inherit}
button,input,textarea{font:inherit;color:inherit}
p{margin:0}
h1,h2,h3{margin:0;font-weight:800;text-wrap:balance}
:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip:focus{position:fixed;top:8px;left:8px;z-index:99;width:auto;height:auto;clip:auto;padding:10px 14px;background:var(--volt);color:var(--night);border-radius:8px}

/* ---------- type ---------- */
.h1{font-stretch:115%;letter-spacing:-.035em;line-height:.98;font-size:clamp(36px,9.4vw,70px)}
.h2{font-stretch:112%;letter-spacing:-.03em;line-height:1;font-size:clamp(30px,6vw,52px)}
.h3{font-stretch:106%;font-weight:700;letter-spacing:-.015em;line-height:1.15;font-size:19px}
.lede{font-size:18px;color:var(--muted);max-width:44ch}
.mono{font-family:var(--mono);font-size:12.5px;font-weight:500;letter-spacing:.06em;text-transform:uppercase}
.wrap{max-width:var(--max);margin:0 auto;padding-inline:var(--gut)}
.sec{padding-block:clamp(64px,10vw,120px)}
.sec-head{display:grid;gap:14px;margin-bottom:clamp(28px,5vw,48px)}
.note{font-size:14px;color:var(--muted)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;padding:0 22px 0 24px;border-radius:999px;border:0;background:var(--volt);color:var(--night);font-weight:700;font-stretch:106%;font-size:16px;text-decoration:none;cursor:pointer;transition:transform .2s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn i{width:8px;height:8px;border-radius:50%;background:var(--night)}
.btn[disabled]{opacity:.6;cursor:wait}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto;z-index:50;height:var(--nav-h);display:flex;align-items:center;background:var(--nav-bg);border-bottom:1px solid var(--nav-line)}
.nav__in{width:100%;max-width:var(--max);margin:0 auto;padding-inline:var(--gut);display:flex;align-items:center;gap:12px}
@media (min-width:720px){.nav__in{gap:24px}}
.logo{display:inline-flex;align-items:center;gap:9px;text-decoration:none;font-weight:800;font-stretch:115%;letter-spacing:-.03em;font-size:18px;white-space:nowrap}
.logo__mark{width:18px;height:18px;border-radius:4px;border:1.5px solid currentColor;position:relative;overflow:hidden}
.logo__mark::after{content:"";position:absolute;inset:0;background:currentColor;opacity:.22;clip-path:polygon(0 0,100% 0,0 100%)}
.logo span{opacity:.68;font-weight:600}
.nav__links{display:none;gap:24px;margin:0 0 0 auto;padding:0;list-style:none;align-items:center}
.nav__links a{text-decoration:none;font-size:15px;font-weight:550}
.nav__links a:hover{text-decoration:underline;text-underline-offset:4px}
.nav__small a{font-size:13px;font-weight:500;color:var(--muted)}
.nav .btn{min-height:42px;font-size:14.5px;padding:0 16px;margin-left:auto;white-space:nowrap}
.nav .btn i{display:none}
.nav__menu{width:44px;height:44px;margin-right:-10px;border:0;background:none;display:grid;place-items:center;cursor:pointer}
.nav__menu span{width:20px;height:1.5px;background:currentColor;box-shadow:0 6px 0 currentColor;transform:translateY(-3px)}
@media (min-width:960px){.nav__links{display:flex}.nav .btn{margin-left:0}.nav__menu{display:none}}
@media (max-width:359px){.nav .btn{display:none}.nav__menu{margin-left:auto}}
/* theme switch: in the nav from 600 px, in the menu sheet below that */
.theme{display:none;flex:none;width:44px;height:44px;border:0;border-radius:50%;background:none;color:inherit;place-items:center;cursor:pointer}
.theme:hover{background:rgba(127,127,127,.14)}
.theme .sun,[data-theme=dark] .theme .moon,[data-theme=dark] .sheet__theme .moon,.sheet__theme .sun{display:none}
[data-theme=dark] .theme .sun,[data-theme=dark] .sheet__theme .sun{display:block}
@media (min-width:600px){.nav .theme{display:grid;margin-left:auto}.nav .btn{margin-left:0}}
@media (min-width:960px){.nav .theme{margin:0 -8px}}
.sheet{position:fixed;inset:0;z-index:60;background:var(--night);color:#fff;display:flex;flex-direction:column;gap:6px;padding:calc(var(--nav-h) + 16px) var(--gut) 28px;opacity:0;visibility:hidden;transition:opacity .25s,visibility 0s .25s}
.sheet.open{opacity:1;visibility:visible;transition:opacity .25s}
.sheet a{font-size:32px;font-weight:800;font-stretch:112%;letter-spacing:-.03em;text-decoration:none;line-height:1.25}
.sheet a.sheet__small{font-size:17px;font-weight:500;color:var(--nmuted);margin-top:14px}
.sheet .btn{margin-top:auto;align-self:flex-start;font-size:17px}
.sheet__theme{display:flex;align-items:center;gap:10px;min-height:44px;margin-top:6px;padding:0;border:0;background:none;color:var(--nmuted);font-size:17px;font-weight:500;cursor:pointer}
.sheet__close{position:absolute;top:8px;right:calc(var(--gut) - 10px);width:44px;height:44px;border:0;background:none;color:inherit;font-size:30px;cursor:pointer}

/* ---------- hero ----------
   Phones: full-bleed portrait still pair under a dark gradient.
   ≥720: the image sits in a frame next to the copy (phone frames are 720 px – never stretched full-bleed). */
.hero{position:relative;margin-top:var(--nav-h);min-height:clamp(540px,calc(100svh - var(--nav-h)),860px);display:flex;align-items:flex-end;background:#1d2125;color:#fff;overflow:hidden}
.hero__media{position:absolute;inset:0;background:var(--media)}
.hero__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero__still--on img{opacity:0;transition:opacity .3s ease}
.hero__media[data-state=on] .hero__still--on img{opacity:1;transition-duration:.12s}
.hero__media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,10,12,0) 38%,rgba(8,10,12,.82) 100%);pointer-events:none}
.hero__status{position:absolute;z-index:2;top:14px;left:14px;display:inline-flex;align-items:center;gap:8px;padding:7px 12px;border-radius:999px;background:rgba(11,14,17,.72);color:#fff}
.hero__status b{width:8px;height:8px;border-radius:50%;background:#8E959E;transition:background .2s}
.hero__media[data-state=on] .hero__status b{background:var(--volt)}
.hero__copy{position:relative;z-index:2;width:100%;display:grid;gap:22px;padding:0 var(--gut) 28px}
.hero__eyebrow{color:rgba(255,255,255,.8)}
.hero__ctl{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
@media (min-width:720px){
  .hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.75fr);gap:40px;align-items:center;min-height:0;max-width:var(--max);margin-inline:auto;padding:clamp(40px,6vw,72px) var(--gut);background:none;color:var(--ink);overflow:visible}
  .hero__media{position:relative;inset:auto;order:2;aspect-ratio:9/14;max-height:74vh;border-radius:var(--r);overflow:hidden;justify-self:end;width:100%}
  .hero__media::after{display:none}
  .hero__copy{padding:0}
  .hero__eyebrow{color:var(--muted)}
  .h1{font-size:clamp(36px,5.8vw,56px)}
}
@media (min-width:960px){
  .hero{grid-template-columns:minmax(0,5fr) minmax(0,7fr);padding-block:clamp(56px,6vw,96px)}
  .hero__media{aspect-ratio:16/9;max-height:none}
  .h1{font-size:clamp(44px,4.6vw,66px)}
}

/* switch */
.switch{display:inline-flex;align-items:center;gap:14px;padding:8px 18px 8px 8px;border-radius:999px;border:0;cursor:pointer;background:#fff;color:var(--night);box-shadow:0 0 0 1px rgba(11,14,17,.08),0 8px 24px rgba(11,14,17,.12);-webkit-tap-highlight-color:transparent;min-height:60px}
.switch__track{position:relative;flex:none;width:84px;height:46px;border-radius:999px;background:#D5DCE1;transition:background .25s var(--ease)}
.switch__knob{position:absolute;top:4px;left:4px;width:38px;height:38px;border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(11,14,17,.25);transition:transform .3s var(--ease)}
.switch[aria-pressed=true] .switch__track{background:var(--volt)}
.switch[aria-pressed=true] .switch__knob{transform:translateX(38px);background:var(--night)}
.switch__txt{display:grid;text-align:left;line-height:1.2}
.switch__state{font-family:var(--mono);font-size:12px;letter-spacing:.08em}
.switch__hint{font-size:15px;font-weight:650}
.switch .on,.switch[aria-pressed=true] .off{display:none}
.switch[aria-pressed=true] .on{display:inline}

/* ---------- how it works ---------- */
.points{display:grid;gap:28px;margin:0;padding:0;list-style:none}
.points li{display:grid;gap:8px;padding-top:18px;border-top:1px solid var(--line)}
.points p{color:var(--muted);max-width:36ch}
@media (min-width:720px){.points{grid-template-columns:repeat(3,1fr);gap:32px}}

/* ---------- where it fits ---------- */
.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 12px}
.card{display:grid;gap:8px;align-content:start}
.card__media{position:relative;aspect-ratio:4/5;border-radius:10px;overflow:hidden;background:var(--media);margin-bottom:6px}
.card__media video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.card .h3{font-size:17px}
.card p{font-size:15px;color:var(--muted);line-height:1.45}
@media (min-width:960px){.cards{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}.card .h3{font-size:19px}.card p{font-size:16px}}
.cards + .note{margin-top:22px}

/* ---------- forms (shared) ---------- */
.field{display:grid;gap:6px;min-width:0}
.flabel{font-size:15px;font-weight:600}
.flabel small{font-weight:400;color:var(--muted)}
.input{width:100%;min-height:52px;padding:12px 14px;border-radius:10px;border:0;background:var(--white);box-shadow:inset 0 0 0 1px var(--line);font-size:17px;outline:none;transition:box-shadow .15s}
.input:focus{box-shadow:inset 0 0 0 2px var(--ink)}
.input[aria-invalid=true]{box-shadow:inset 0 0 0 2px var(--err)}
textarea.input{min-height:96px;resize:vertical}
.ferr{font-size:14px;color:var(--err);min-height:0}
.ferr:empty{display:none}

/* ---------- calculator ---------- */
.calc{display:grid;gap:24px}
.calc__box{display:grid;gap:18px;padding:20px;border-radius:var(--r);background:var(--paper);box-shadow:inset 0 0 0 1px var(--line)}
.calc__in{align-content:start}
.calc__in .unit{max-width:260px}
.calc__in .input{font-size:22px;font-weight:700;min-height:60px}
.unit{position:relative}
.unit .input{padding-right:42px;background:var(--white);box-shadow:inset 0 0 0 1px var(--line);font-variant-numeric:tabular-nums;-moz-appearance:textfield}
.unit .input:focus{box-shadow:inset 0 0 0 2px var(--ink)}
.unit .input[aria-invalid=true]{box-shadow:inset 0 0 0 2px var(--err)}
.unit .input::-webkit-outer-spin-button,.unit .input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.unit span{position:absolute;right:12px;top:50%;transform:translateY(-50%);font-size:14px;color:var(--muted);pointer-events:none}
.calc__out{display:grid;gap:4px;padding-top:16px;border-top:1px solid var(--line)}
.calc__price{white-space:nowrap;font-size:clamp(30px,8vw,52px);font-weight:800;font-stretch:112%;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.calc__note{font-size:15px;color:var(--muted)}
.calc__main{display:grid;gap:18px;align-content:start}
.calc__more{display:grid;gap:14px;align-content:start;padding-top:18px;border-top:1px solid var(--line)}
.calc__more:empty{display:none}
.calc__more ol{margin:0;padding-left:1.4em;display:grid;gap:8px}
.calc__more ol li::marker{font-family:var(--mono);font-size:13px;color:var(--muted)}
.calc__more p{font-size:15px;color:var(--muted);max-width:52ch}
.btn--lg{min-height:62px;padding:0 30px 0 34px;font-size:18px;gap:14px}
.calc .btn--lg{justify-self:stretch}
/* ≥720: one wide box – area and price on the left, room on the right for what changes the price; button centred below */
@media (min-width:720px){
  .calc__box{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0;padding:40px}
  .calc__main{padding-right:40px}
  .calc__more{padding:0 0 0 40px;border-top:0;border-left:1px solid var(--line)}
  .calc__price{font-size:clamp(32px,4.2vw,56px)}
  .calc .btn--lg{justify-self:center}
}
@media (min-width:960px){.calc__box{padding:48px}.calc__main{padding-right:56px}.calc__more{padding-left:56px}}

/* ---------- steps ---------- */
.steps{display:grid;gap:22px;margin:0;padding:0;list-style:none;counter-reset:s}
.steps li{display:grid;grid-template-columns:44px 1fr;gap:4px 14px;align-items:start}
.steps li::before{counter-increment:s;content:counter(s);grid-row:span 2;width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:var(--ink);color:var(--volt);font-family:var(--mono);font-weight:500}
[data-theme=dark] .steps li::before{background:var(--white);box-shadow:inset 0 0 0 1px var(--line)}
.steps p{color:var(--muted)}
@media (min-width:720px){.steps{grid-template-columns:repeat(3,1fr);gap:32px}.steps li{grid-template-columns:1fr}.steps li::before{grid-row:auto;margin-bottom:10px}}

/* ---------- FAQ ---------- */
.faq details{max-width:820px}
.faq details{border-top:1px solid var(--line)}
.faq details:last-child{border-bottom:1px solid var(--line)}
.faq summary{list-style:none;cursor:pointer;display:grid;grid-template-columns:1fr 26px;gap:16px;align-items:center;padding:20px 0;font-size:18px;font-weight:700;line-height:1.3}
.faq summary::-webkit-details-marker{display:none}
.faq summary i{position:relative;width:26px;height:26px;border-radius:50%;box-shadow:inset 0 0 0 1px var(--line)}
.faq summary i::before,.faq summary i::after{content:"";position:absolute;left:50%;top:50%;width:10px;height:1.5px;background:currentColor;transform:translate(-50%,-50%)}
.faq summary i::after{transform:translate(-50%,-50%) rotate(90deg)}
.faq details[open] summary i::after{transform:translate(-50%,-50%)}
.faq details p{padding:0 42px 22px 0;color:var(--muted);max-width:62ch}

/* ---------- quote ---------- */
.dark{background:var(--night);color:#fff;--muted:var(--nmuted);--line:var(--nline)}
.dark :focus-visible{outline-color:var(--volt)}
[data-theme=dark] .dark{border-top:1px solid var(--nline)}
.quote{display:grid;gap:36px}
.contacts{list-style:none;margin:24px 0 0;padding:0;display:grid;gap:6px;font-size:18px}
.contacts a{text-decoration:none}
.contacts a:hover{text-decoration:underline}
.contacts li:last-child{color:var(--muted)}
.form{display:grid;gap:18px}
.dark .input{background:#161A1F;box-shadow:inset 0 0 0 1px var(--nline);color:#fff}
.dark .input:focus{box-shadow:inset 0 0 0 2px var(--volt)}
.dark .input[aria-invalid=true]{box-shadow:inset 0 0 0 2px #FF8A80}
.dark .ferr{color:#FF8A80}
.dark .input::placeholder{color:#6B737B}
.form__sum{display:flex;flex-wrap:wrap;gap:6px 14px;align-items:center;padding:14px 16px;border-radius:10px;background:rgba(214,255,46,.1);box-shadow:inset 0 0 0 1px rgba(214,255,46,.45);font-size:15.5px}
.form__sum b{font-weight:700}
.form__row{display:grid;gap:18px}
.hp{position:absolute;left:-9999px}
.form__msg{font-size:15px}
.form__msg[hidden]{display:none}
.form__ok{display:none}
.form.sent > :not(.form__ok){display:none}
.form.sent .form__ok{display:grid;gap:8px;padding:24px;border-radius:var(--r);box-shadow:inset 0 0 0 1px var(--line)}
.form__legal{margin-top:-6px;font-size:14px;color:var(--muted)}
.form__legal a{color:inherit;text-underline-offset:2px}
.form__legal a:hover{color:#fff}
@media (min-width:720px){.form__row{grid-template-columns:1fr 1fr}}
@media (min-width:960px){.quote{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr);gap:64px}}

/* ---------- footer ---------- */
.foot{background:var(--night);color:#fff;border-top:1px solid var(--nline);padding:40px 0 28px;font-size:15px}
.foot__in{display:grid;gap:24px}
.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.foot a,.foot li{text-decoration:none;color:var(--nmuted)}
.foot a:hover{color:#fff}
.foot__small{display:flex;flex-wrap:wrap;gap:6px 24px;margin-top:28px;color:var(--nmuted);font-size:13.5px}
@media (min-width:720px){.foot__in{grid-template-columns:1.4fr 1fr 1fr}}

/* ---------- LED page ---------- */
.led{margin-top:var(--nav-h)}
.led__grid{display:grid;gap:28px}
.led__video{position:relative;aspect-ratio:16/9;max-width:720px;border-radius:var(--r);overflow:hidden;background:#111}
.led__video video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.led__text{display:grid;gap:14px}
@media (min-width:960px){.led__grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:56px;align-items:center}}

/* ---------- privacy page ---------- */
.legal{margin-top:var(--nav-h)}
.legal__in{max-width:calc(760px + 2 * var(--gut))}
.legal__date{margin-top:14px;color:var(--muted)}
.legal h2{margin:40px 0 12px}
.legal ul{margin:0;padding-left:1.2em;display:grid;gap:8px}
.legal p + p,.legal ul + p{margin-top:12px}
.legal a{text-underline-offset:2px}
.ph{background:var(--volt);color:var(--night);padding:0 .25em;border-radius:3px}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}