/* demo.css — споделен стил за 10-те демота. Идентичността идва от :root токените на всяка страница
   (--bg --surface --text --accent --display --body …) + hero вариант + фонов шаблон. */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:var(--display);line-height:1.05;margin:0;letter-spacing:-.01em}
h1{font-size:clamp(40px,6.4vw,84px);font-weight:700}
h1 em,.h2 em{font-style:normal;color:var(--accent)}
.h2{font-size:clamp(30px,4.4vw,56px);font-weight:700;margin-bottom:14px}
h3{font-size:22px;font-weight:600}
p{margin:0 0 14px}
.eyebrow{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--accent);font-weight:600;margin-bottom:16px}
.lede{font-size:clamp(17px,1.4vw,20px);color:var(--muted);max-width:60ch;margin:0 0 28px}
.body{color:var(--muted);max-width:60ch}
.tiny{font-size:13px;color:var(--muted)}
.wrap{max-width:1200px;margin:0 auto;padding:0 clamp(16px,4vw,40px)}
.narrow{max-width:820px}
.section{padding:clamp(64px,9vw,120px) 0}
.section.alt{background:var(--surface)}
.grid{display:grid;gap:20px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(32px,6vw,80px);align-items:center}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:14px 22px;border-radius:var(--radius);font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;font-family:var(--body);transition:transform .2s,background .2s,border-color .2s;line-height:1}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--accent);color:var(--on-accent)}
.btn-primary:hover{background:var(--accent2)}
.btn-ghost{border-color:var(--line);color:var(--text);background:transparent}
.btn-ghost:hover{border-color:var(--accent)}
.btn-nav{padding:11px 16px;background:var(--text);color:var(--bg)}

/* Carbon Stealth demo bar — бранд езикът на carbonstealth.eu (черно · cyan · Space Mono) */
.cs-bar{position:sticky;top:0;z-index:60;display:flex;align-items:center;gap:14px;padding:8px clamp(12px,3vw,32px);background:#000;color:#ccc;font:400 11px/1 'Space Mono',ui-monospace,monospace;letter-spacing:.08em;border-bottom:1px solid rgba(0,229,255,.2)}
.cs-mark{flex:none;display:block;line-height:0}.cs-mark img{width:24px;height:24px;filter:drop-shadow(0 0 6px rgba(0,229,255,.35))}
.cs-back{color:#00e5ff;white-space:nowrap;text-transform:uppercase;font-size:10px;letter-spacing:.15em}
.cs-hint{flex:1;color:#00e5ff;opacity:.75;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:9px;letter-spacing:.3em;text-transform:uppercase}
.cs-langs{display:flex;gap:2px}
.cs-langs a{padding:5px 8px;font-size:10px;color:#00e5ff;border:1px solid rgba(0,229,255,.4);text-transform:uppercase;letter-spacing:.1em}
.cs-langs a[aria-current]{background:#00e5ff;color:#000}
.cs-want{background:#00e5ff;color:#000;padding:8px 14px;font-size:10px;letter-spacing:.15em;text-transform:uppercase;white-space:nowrap;transition:background .3s}
.cs-want:hover{background:#f5f5f0}
.progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:70;pointer-events:none}
.progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .1s linear}

/* Nav */
.nav{position:sticky;top:34px;z-index:50;display:flex;align-items:center;gap:24px;padding:14px clamp(16px,4vw,40px);background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}
.brand{font-family:var(--display);font-weight:700;font-size:26px;letter-spacing:.02em}
.menu{display:flex;gap:26px;margin-left:auto;font-size:15px;font-weight:500}
.menu a{position:relative;padding:4px 0;color:var(--muted)}
.menu a:hover{color:var(--text)}
.burger{display:none;background:none;border:0;color:var(--text);margin-left:auto;padding:6px;cursor:pointer}

/* Hero */
.hero{position:relative;min-height:min(calc(100vh - 34px),860px);display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,5vw,72px);align-items:center;padding:clamp(56px,8vw,110px) clamp(16px,4vw,40px);max-width:1280px;margin:0 auto;overflow:hidden}
.hero-center{grid-template-columns:1fr;text-align:center;justify-items:center}
.hero-center .lede{margin-inline:auto}
.hero-center .cta-row{justify-content:center}
.hero-editorial{grid-template-columns:.9fr 1.1fr}
.hero-editorial .hero-text{order:2}
.hero-editorial .hero-visual{order:1}
.cta-row{display:flex;gap:12px;flex-wrap:wrap}
.hero-text,.hero-visual{position:relative;z-index:1}
.pattern-grid::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse at 30% 40%,#000 20%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 30% 40%,#000 20%,transparent 70%);z-index:0}
.pattern-dots::before{content:"";position:absolute;inset:0;background-image:radial-gradient(var(--line) 1.5px,transparent 1.5px);background-size:28px 28px;mask-image:radial-gradient(ellipse at 70% 30%,#000 20%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse at 70% 30%,#000 20%,transparent 70%);z-index:0}
.pattern-stripes::before{content:"";position:absolute;inset:0;background-image:repeating-linear-gradient(135deg,var(--line) 0 1px,transparent 1px 22px);mask-image:linear-gradient(to bottom,#000,transparent 80%);-webkit-mask-image:linear-gradient(to bottom,#000,transparent 80%);z-index:0}
.pattern-glow::before{content:"";position:absolute;inset:-20%;background:radial-gradient(circle at 75% 35%,color-mix(in srgb,var(--accent) 28%,transparent),transparent 45%);z-index:0}

/* Hero със снимка: изображението е зад текста, с градиент към фона за четимост */
.hero.has-photo{min-height:min(calc(100vh - 34px),920px)}
.hero-bg{position:absolute;inset:0;z-index:0}
.hero-bg img{width:100%;height:100%;object-fit:cover;object-position:center}
.hero-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--bg) 0%,color-mix(in srgb,var(--bg) 82%,transparent) 45%,color-mix(in srgb,var(--bg) 35%,transparent) 100%),linear-gradient(0deg,var(--bg) 0%,transparent 40%)}
.hero-center .hero-bg::after{background:linear-gradient(0deg,var(--bg) 0%,color-mix(in srgb,var(--bg) 70%,transparent) 55%,color-mix(in srgb,var(--bg) 45%,transparent) 100%)}
.about-photo{margin-bottom:16px;overflow:hidden;border-radius:calc(var(--radius) * 2);border:1px solid var(--line)}
.about-photo img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;transition:transform .8s}
.about-photo:hover img{transform:scale(1.03)}
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.g-item{display:block;overflow:hidden;border-radius:calc(var(--radius) * 2);border:1px solid var(--line);background:var(--surface)}
.g-item img{width:100%;height:auto;aspect-ratio:3/2;object-fit:cover;transition:transform .8s,filter .4s}
.g-item:hover img{transform:scale(1.04)}
.g-item:nth-child(1){grid-column:span 2;grid-row:span 2}.g-item:nth-child(1) img{aspect-ratio:auto;height:100%}
.credits{margin-top:14px;font-size:12px;color:var(--muted)}
.credits a{text-decoration:underline;text-underline-offset:3px}
.lightbox{position:fixed;inset:0;z-index:100;background:rgba(0,0,0,.92);display:grid;place-items:center;padding:24px}
.lightbox[hidden]{display:none}
.lightbox img{max-width:min(1400px,92vw);max-height:88vh;width:auto;height:auto;border-radius:var(--radius);box-shadow:0 40px 120px -40px rgba(0,0,0,.8)}
.lightbox button{position:absolute;color:#fff;font-size:40px;line-height:1;padding:12px 18px;background:rgba(255,255,255,.08);border-radius:var(--radius)}
.lb-close{top:16px;right:16px}.lb-prev{left:16px;top:50%;transform:translateY(-50%)}.lb-next{right:16px;top:50%;transform:translateY(-50%)}
.sticky{display:none;position:fixed;left:0;right:0;bottom:0;z-index:55;gap:8px;padding:10px 12px calc(10px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line)}
.sticky .btn{flex:1;justify-content:center;padding:13px 10px}
.totop{position:fixed;right:16px;bottom:16px;z-index:54;width:44px;height:44px;display:grid;place-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);color:var(--text);opacity:0;pointer-events:none;transition:opacity .3s}
.totop.show{opacity:1;pointer-events:auto}
/* widget форми */
.w-field{display:grid;gap:5px;font-size:12px;color:var(--muted);margin-bottom:10px}
.w-field select,.w-field input{width:100%;font:inherit;font-size:14px;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:10px 12px;color-scheme:dark}
.mode-light .w-field select,.mode-light .w-field input{color-scheme:light}
.w-field select:focus,.w-field input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.w-2{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.w-done:empty{display:none}
.w-done{display:block;margin-top:12px;background:color-mix(in srgb,var(--accent) 15%,transparent);border:1px solid var(--accent);border-radius:var(--radius);padding:10px 12px;font-size:13px}
.w-schedule tr{cursor:pointer;transition:background .2s}
.w-schedule tr:hover{background:color-mix(in srgb,var(--accent) 8%,transparent)}
.w-schedule tr[aria-pressed="true"]{background:color-mix(in srgb,var(--accent) 16%,transparent);box-shadow:inset 3px 0 0 var(--accent)}
.tile{cursor:pointer;text-align:left;font-family:inherit;color:inherit;border:1px solid transparent;transition:border-color .2s,transform .2s;position:relative}
.tile:hover{transform:translateY(-2px)}
.tile[aria-pressed="true"]{border-color:var(--accent)}
.tile[aria-pressed="true"]::after{content:"✓";position:absolute;top:6px;right:6px;width:20px;height:20px;border-radius:50%;background:var(--accent);color:var(--on-accent);font-size:12px;display:grid;place-items:center}
.w-cart{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);font-size:14px}
.w-cart strong{color:var(--accent);font-size:18px}
.w-clear{font-size:12px;color:var(--muted);text-decoration:underline}

/* Badges strip */
.badges{display:flex;flex-wrap:wrap;gap:8px 32px;justify-content:center;padding:18px clamp(16px,4vw,40px);border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:14px;font-weight:500;color:var(--muted)}
.badges span{display:inline-flex;align-items:center;gap:8px}
.badges svg{color:var(--accent)}

/* Widgets */
.widget{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) * 2);padding:clamp(20px,2.4vw,32px);box-shadow:0 30px 80px -30px rgba(0,0,0,.45);width:min(100%,460px);margin-inline:auto}
.w-title{font-size:20px;margin-bottom:18px;font-family:var(--display)}
.w-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:15px}
.w-row span{color:var(--muted)}
.w-cta{margin-top:18px;width:100%;justify-content:center}
.w-schedule table{width:100%;border-collapse:collapse;font-size:15px}
.w-schedule td{padding:10px 0;border-bottom:1px solid var(--line)}
.w-schedule td:first-child{color:var(--muted);width:30%}
.w-schedule td:nth-child(2){color:var(--accent);font-weight:600;width:28%}
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.tile{background:var(--surface2);border-radius:var(--radius);padding:10px;display:grid;gap:4px;font-size:13px}
.tile strong{font-size:14px;line-height:1.2}
.tile span{color:var(--muted)}
.tile em{font-style:normal;color:var(--accent);font-weight:700}
.tile-art{aspect-ratio:1;border-radius:calc(var(--radius) - 2px);background:linear-gradient(135deg,var(--accent),var(--accent2));margin-bottom:6px;opacity:.9}
.tile-1 .tile-art{background:linear-gradient(135deg,var(--accent2),var(--surface));border:1px solid var(--line)}
.tile-2 .tile-art{background:radial-gradient(circle at 30% 30%,var(--accent2),var(--accent))}
.kpis{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.kpi{background:var(--surface2);border-radius:var(--radius);padding:14px}
.kpi strong{display:block;font-family:var(--display);font-size:28px;color:var(--accent)}
.kpi span{font-size:13px;color:var(--muted)}
.kpi-wide{grid-column:1/-1}
.w-consult ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.w-consult li{display:flex;gap:10px;align-items:flex-start;font-size:15px}
.w-consult svg{color:var(--accent);flex:none;margin-top:3px}

/* Cards */
.card{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) * 2);padding:28px;display:flex;flex-direction:column;gap:10px;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:var(--accent)}
.card .num{font-family:var(--display);color:var(--accent);font-size:14px;letter-spacing:.2em}
.card p{color:var(--muted);font-size:15px;flex:1}
.price{color:var(--accent);font-size:18px}
.facts{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.fact{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) * 2);padding:26px 22px}
.fact strong{display:block;font-family:var(--display);font-size:clamp(34px,4vw,52px);color:var(--accent);line-height:1}
.fact span{font-size:14px;color:var(--muted)}
.alt .fact,.alt .card,.alt .review{background:var(--bg)}
.steps{list-style:none;counter-reset:s;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.steps li{counter-increment:s;padding:24px 0 0;border-top:2px solid var(--line);position:relative}
.steps li::before{content:"0" counter(s);font-family:var(--display);font-size:40px;color:var(--accent);display:block;line-height:1;margin-bottom:12px}
.steps p{color:var(--muted);font-size:15px}
.pricelist{display:grid;grid-template-columns:repeat(2,1fr);gap:28px 56px}
.pl-group h3{margin-bottom:12px;color:var(--accent)}
.pl-row{display:flex;align-items:baseline;gap:10px;padding:9px 0;font-size:16px}
.pl-dots{flex:1;border-bottom:1px dotted var(--line);transform:translateY(-4px)}
.review{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) * 2);padding:28px}
.review p{font-size:16px;margin:12px 0 16px}
.review footer{color:var(--muted);font-size:14px}
.stars{display:inline-flex;gap:2px;color:var(--accent)}
.faq{border-bottom:1px solid var(--line);padding:6px 0}
.faq summary{cursor:pointer;list-style:none;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--display);font-size:28px;color:var(--accent);flex:none;transition:transform .2s}
.faq[open] summary::after{transform:rotate(45deg)}
.faq h3{font-size:19px}
.faq p{color:var(--muted);padding-bottom:12px;max-width:65ch}
.info{list-style:none;margin:20px 0 0;padding:0;display:grid;gap:14px}
.info li{display:flex;gap:12px;align-items:flex-start}
.info svg{color:var(--accent);flex:none;margin-top:4px}
.form{background:var(--surface);border:1px solid var(--line);border-radius:calc(var(--radius) * 2);padding:clamp(20px,3vw,36px);display:grid;gap:14px}
.form label{display:grid;gap:6px;font-size:14px;color:var(--muted)}
.form input,.form textarea{width:100%;font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.form input:focus,.form textarea:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:transparent}
.form .btn{justify-self:start}
.sent:empty{display:none}
.sent{background:color-mix(in srgb,var(--accent) 15%,transparent);border:1px solid var(--accent);border-radius:var(--radius);padding:12px 14px;font-size:14px}
.foot{border-top:1px solid var(--line);padding:32px 0}
.foot .wrap{display:flex;flex-wrap:wrap;gap:12px 32px;align-items:center;justify-content:space-between}
.credit{margin:0;font-size:13px;color:var(--muted)}
.credit a{color:var(--text);text-decoration:underline;text-underline-offset:3px}

/* Reveal — само с JS; без JS всичко е видимо */
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .6s ease,transform .6s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.js .reveal{opacity:1;transform:none;transition:none}.btn,.card{transition:none}.btn:hover,.card:hover{transform:none}}

@media (max-width:980px){
  .hero,.hero-editorial{grid-template-columns:1fr;min-height:0;padding-top:48px}
  .hero-editorial .hero-text{order:1}.hero-editorial .hero-visual{order:2}
  .grid-3,.pricelist{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr}
}
@media (max-width:720px){
  body{font-size:16px;padding-bottom:72px}
  .sticky{display:flex}
  .totop{bottom:84px}
  .gallery{grid-template-columns:1fr 1fr}.g-item:nth-child(1){grid-column:span 2;grid-row:auto}.g-item:nth-child(1) img{aspect-ratio:3/2;height:auto}
  .w-2{grid-template-columns:1fr}
  .grid-3,.pricelist,.steps,.facts{grid-template-columns:1fr}
  .cs-hint{display:none}
  .cs-bar{gap:8px;font-size:12px}
  .cs-want{padding:7px 8px;font-size:9px;letter-spacing:.08em}
  .cs-back{flex:1 1 auto;min-width:0;overflow:hidden;text-overflow:ellipsis}
  .burger{display:block}
  .menu{display:none;position:absolute;left:0;right:0;top:100%;flex-direction:column;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px 16px 16px}
  .menu.open{display:flex}
  .menu a{padding:12px 0;border-bottom:1px solid var(--line)}
  .btn-nav span{display:none}
  .tiles{grid-template-columns:repeat(3,1fr)}
}

/* --- интерактивни добавки (fx/<id>.js): проба на цвят/материал, калкулатори --- */
.mat{width:32px;height:32px;border-radius:50%;background:var(--m);border:2px solid transparent;box-shadow:0 0 0 1px var(--line);transition:transform .2s,border-color .2s;cursor:pointer;padding:0}
.mat:hover{transform:scale(1.1)}
.mat.on{border-color:var(--text);transform:scale(1.1)}
.calc{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:grid;gap:12px}
.calc label{display:grid;gap:6px;font-size:13px;color:var(--muted)}
.calc label b{color:var(--text);float:right}
.calc input[type=range]{width:100%;accent-color:var(--accent)}
.calc-out{display:flex;justify-content:space-between;align-items:baseline;gap:12px;font-size:14px}
.calc-out strong{font-family:var(--display);font-size:26px;color:var(--accent)}