/* ============================================================
   hero.css — скрол-анимирано хиро на началната страница.
   Зарежда се само в index.html, СЛЕД style.css (ползва --ink,
   --accent, --font-mono оттам и бутоните .btn от style.css).
   Кадри: img/hero-seq/f_001..f_202.webp · логика: hero.js
   ============================================================ */

.st{position:relative;height:1100vh}
.st-stage{position:sticky;top:0;height:100vh;overflow:hidden;background:var(--ink)}
#seq{position:absolute;inset:0;width:100%;height:100%;display:block}
.shade{position:absolute;inset:0;pointer-events:none;background:
  linear-gradient(180deg,rgba(16,24,38,.28) 0%,rgba(16,24,38,.02) 30%,rgba(16,24,38,.1) 62%,rgba(16,24,38,.72) 100%);
  will-change:opacity}

/* реални устройства (снимки с прозрачен фон) — сцена „вход“ */
.device{position:absolute;transform:translate(-50%,-50%) scale(.82);opacity:0;will-change:transform,opacity}
.device img{display:block;filter:drop-shadow(0 6px 16px rgba(0,0,0,.6))}
.device .pulse{position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;border:1.5px solid rgba(34,211,238,.7);animation:pulse 2.4s ease-out infinite}
@keyframes pulse{0%{transform:scale(.4);opacity:.9}70%,100%{transform:scale(4);opacity:0}}
/* размерът следва мащаба на сцената (--ss), задава се от hero.js */
.cam-dev{top:30%;left:23%}
.cam-dev img{width:calc(17.86px * var(--ss,1.8));transform:scaleX(-1)}
.intercom-dev{top:67%;left:56%}
.intercom-dev img{height:calc(24.19px * var(--ss,1.8))}

.connectors{position:absolute;inset:0;width:100%;height:100%;opacity:0;will-change:opacity;pointer-events:none}
/* невидима котва към сървърния шкаф — линиите на балончетата сочат към нея */
.rack-anchor{position:absolute;width:14px;height:14px;transform:translate(-50%,-50%);border-radius:50%;opacity:0;pointer-events:none}

.bubble{position:absolute;transform:translate(-50%,-50%);opacity:0;will-change:transform,opacity}
.bubble .card{display:flex;align-items:center;gap:9px;background:rgba(16,24,38,.78);backdrop-filter:blur(6px);border:1px solid rgba(34,211,238,.42);border-radius:999px;padding:8px 16px 8px 10px;white-space:nowrap;box-shadow:0 6px 26px -10px rgba(0,0,0,.6)}
.bubble .ic{width:36px;height:36px;flex:none;display:inline-flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(34,211,238,.16);color:var(--accent)}
.bubble .ic svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.8}
.bubble b{font-size:16.5px;font-weight:600;color:#fff}

/* „Домоуправа“: голямо балонче със списък модули */
.bubble .card-group{flex-direction:column;align-items:flex-start;gap:9px;border-radius:16px;padding:13px 17px 14px}
.card-group .grp-head{display:flex;align-items:center;gap:9px}
.card-group .grp-list{list-style:none;display:flex;flex-direction:column;gap:7px;margin:0;padding-left:1px}
.card-group .grp-list li{display:flex;align-items:center;gap:9px;font-size:15px;color:rgba(255,255,255,.85);white-space:nowrap}
.card-group .grp-list li svg{width:16px;height:16px;stroke:var(--accent);fill:none;stroke-width:1.7;flex:none;opacity:.92}

/* текст-карта върху видеото (съдържа H1 + CTA) */
.text-card{position:absolute;left:50%;bottom:6%;transform:translate(-50%,20px);width:min(1400px,96%);opacity:0;text-align:center;will-change:transform,opacity;
  padding:20px 26px 22px;border-radius:8px;background:rgba(16,24,38,.5);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.14);box-shadow:0 20px 50px -20px rgba(0,0,0,.7)}
.text-card h1{font-size:clamp(16px,2vw,26px);font-weight:800;line-height:1.2;letter-spacing:-.02em;white-space:nowrap;color:#fff;margin:0}
.text-card h1 em{font-style:normal;color:var(--accent)}
.text-card p{margin:10px auto 0;color:rgba(255,255,255,.82);font-size:14px;line-height:1.6;white-space:nowrap}
.text-card .cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:20px}

/* подсказка „скрол“ (следва курсора / статична на телефон) */
.mouse{width:22px;height:34px;border:1.5px solid rgba(255,255,255,.65);border-radius:12px;position:relative;flex:none}
.mouse::after{content:"";position:absolute;left:50%;top:6px;width:3px;height:6px;border-radius:2px;background:#fff;transform:translateX(-50%);animation:wheel 1.6s ease-in-out infinite}
@keyframes wheel{0%{opacity:0;transform:translate(-50%,0)}30%{opacity:1}60%{opacity:1;transform:translate(-50%,8px)}100%{opacity:0;transform:translate(-50%,10px)}}
.hint{position:absolute;left:50%;bottom:26px;transform:translateX(-50%);z-index:6;display:flex;flex-direction:column;align-items:center;gap:7px;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#eafcff;white-space:nowrap;text-align:center;animation:hintglow 2.1s ease-in-out infinite}
.cursor-hint{position:fixed;left:0;top:0;z-index:45;pointer-events:none;display:flex;align-items:center;gap:10px;transform:translate(22px,-50%);opacity:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#eafcff;white-space:nowrap;animation:hintglow 2.1s ease-in-out infinite}
@keyframes hintglow{
  0%,100%{text-shadow:0 0 7px rgba(34,211,238,.55),0 0 16px rgba(34,211,238,.3),0 1px 6px rgba(0,0,0,.85)}
  50%{text-shadow:0 0 12px rgba(34,211,238,1),0 0 26px rgba(34,211,238,.7),0 0 40px rgba(34,211,238,.35),0 1px 6px rgba(0,0,0,.9)}
}

.loader{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:var(--ink);z-index:20;transition:opacity .5s}
.loader.done{opacity:0;pointer-events:none}
.loader .ring{width:34px;height:34px;border:3px solid rgba(255,255,255,.15);border-top-color:var(--accent);border-radius:50%;animation:spin .9s linear infinite}
.loader .txt{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.55)}
@keyframes spin{to{transform:rotate(360deg)}}

@media(max-width:1300px){ .text-card p{white-space:normal} }
@media(max-width:1024px){ .st{height:800vh} }
@media(max-width:640px){
  .st{height:600vh}
  .text-card{bottom:4%;padding:16px 16px 18px;width:92%}
  .text-card h1{font-size:18px;white-space:normal}
  .text-card p{font-size:13px;white-space:normal}
  .bubble b{font-size:14.5px}
  .card-group .grp-list li{font-size:13.5px}
}
/* reduced-motion: без дългия скрол — статично хиро (кадър на сградата + текста) */
@media(prefers-reduced-motion:reduce){
  .mouse::after,.loader .ring,.device .pulse,.hint,.cursor-hint{animation:none}
  .st{height:100vh}
  .text-card{opacity:1;transform:translate(-50%,0)}
}