/* ============================================================
   SmartHomeEra — Design System
   Palette: Navy / Cyber Blue / Cyan glow / Silver / Gold fleck
   Display: Space Grotesk · Body: Inter · Data: IBM Plex Mono
   ============================================================ */

:root{
  --navy-950:#050b16;
  --navy-900:#0a1628;
  --navy-850:#0d1d33;
  --navy-800:#112743;
  --navy-700:#173456;
  --navy-600:#204672;
  --cyber-500:#2e9bf0;
  --cyber-400:#48d7e8;
  --cyber-300:#8be9f2;
  --silver-300:#b8c4d4;
  --silver-500:#8a9bb3;
  --white:#f5f8fc;
  --gold-400:#c89b3c;
  --gold-300:#e0b95c;
  --danger:#ef5b6c;
  --success:#3ecf8e;

  --bg:var(--navy-900);
  --bg-alt:var(--navy-950);
  --surface:rgba(15,33,56,.46);
  --surface-solid:var(--navy-850);
  --border:rgba(139,166,201,.12);
  --border-strong:rgba(72,215,232,.28);
  --text:var(--white);
  --text-muted:var(--silver-300);
  --text-dim:var(--silver-500);

  --radius-sm:8px;
  --radius-md:14px;
  --radius-lg:20px;
  --radius-xl:28px;

  --ease:cubic-bezier(.16,.84,.32,1);
  --shadow-glow:0 0 0 1px rgba(72,215,232,.10),0 24px 60px -24px rgba(5,11,22,.7);
  --font-display:'Space Grotesk',sans-serif;
  --font-body:'Inter',sans-serif;
  --font-mono:'IBM Plex Mono',monospace;
}

[data-theme="light"]{
  --bg:#eef3f9;
  --bg-alt:#e2eaf3;
  --surface:rgba(255,255,255,.6);
  --surface-solid:#ffffff;
  --border:rgba(20,40,70,.12);
  --border-strong:rgba(46,155,240,.35);
  --text:#0a1628;
  --text-muted:#3d4f68;
  --text-dim:#63758e;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
  transition:background .4s var(--ease),color .4s var(--ease);
}
body::before{
  content:"";
  position:fixed;inset:0;z-index:-2;
  background:
    radial-gradient(ellipse 900px 500px at 15% -5%, rgba(46,155,240,.09), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(72,215,232,.06), transparent 55%),
    var(--bg-alt);
  pointer-events:none;
}
body::after{
  content:"";
  position:fixed;inset:0;z-index:-1;
  background:radial-gradient(ellipse 1200px 800px at 50% 0%, transparent 40%, rgba(0,0,0,.35) 100%);
  pointer-events:none;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea,select{font-family:inherit;color:inherit}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:-.02em;line-height:1.1}
h3,h4{letter-spacing:-.01em}
.mono{font-family:var(--font-mono)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

.container{width:100%;max-width:1280px;margin:0 auto;padding:0 clamp(20px,5vw,48px)}
section{position:relative;padding:clamp(72px,10vw,140px) 0}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.12em;text-transform:uppercase;
  color:var(--cyber-300);margin-bottom:18px;
}
.eyebrow::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyber-400)}
h2.headline{font-size:clamp(30px,4.2vw,52px);max-width:16ch}
p.lead{font-size:clamp(16px,1.6vw,19px);color:var(--text-muted);max-width:60ch;margin-top:18px}
.section-head{margin-bottom:56px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.section-head.center p.lead,.section-head.center h2{margin-left:auto;margin-right:auto}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;border-radius:999px;font-weight:600;font-size:14.5px;
  white-space:nowrap;transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .3s;
}
.btn-primary{
  background:var(--cyber-500);
  color:#031018;
  box-shadow:0 1px 0 rgba(255,255,255,.25) inset, 0 10px 24px -10px rgba(46,155,240,.5);
}
.btn-primary:hover{transform:translateY(-1px);background:var(--cyber-400);box-shadow:0 1px 0 rgba(255,255,255,.3) inset, 0 14px 30px -10px rgba(72,215,232,.55)}
.btn-ghost{
  background:var(--surface);border:1px solid var(--border);backdrop-filter:blur(12px);color:var(--text);
}
.btn-ghost:hover{border-color:var(--border-strong);transform:translateY(-1px)}
.btn-outline-gold{border:1px solid rgba(200,155,60,.5);color:var(--gold-300);background:rgba(200,155,60,.08)}
.btn-outline-gold:hover{background:rgba(200,155,60,.16);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:13px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}

/* ---------- glass card ---------- */
.glass{
  background:var(--surface);
  border:1px solid var(--border);
  backdrop-filter:blur(20px) saturate(1.1);
  -webkit-backdrop-filter:blur(20px) saturate(1.1);
  border-radius:var(--radius-lg);
  transition:border-color .4s var(--ease);
}
.glass:hover{border-color:var(--border-strong)}

/* ---------- NAV ---------- */
.site-nav{
  position:fixed;top:0;left:0;right:0;z-index:200;
  padding:14px 0;
}
.site-nav .nav-inner{
  max-width:1280px;margin:0 auto;padding:10px 18px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  background:rgba(9,20,36,.62);
  border:1px solid var(--border);
  border-radius:999px;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
  transition:background .3s;
}
[data-theme="light"] .site-nav .nav-inner{background:rgba(255,255,255,.72)}
.brand{display:flex;align-items:center;gap:12px;font-family:var(--font-display);font-weight:600;font-size:15px}
.brand .logo-chip{
  width:42px;height:42px;border-radius:12px;background:linear-gradient(160deg,#f4f8fc,#dce6f0);
  display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0;
  box-shadow:inset 0 0 0 1px rgba(0,0,0,.05);
}
.brand .logo-chip img{width:78%;height:78%;object-fit:contain}
.brand .brand-text span{display:block}
.brand .brand-sub{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;color:var(--cyber-400);text-transform:uppercase;font-weight:500}

.nav-links{display:flex;align-items:center;gap:2px}
.nav-links > li{position:relative}
.nav-links a, .nav-links > li > button.nav-link-btn{
  display:flex;align-items:center;gap:5px;padding:10px 16px;border-radius:999px;font-size:14px;color:var(--text-muted);font-weight:500;
  transition:color .25s,background .25s;
}
.nav-links a:hover,.nav-links a.active,.nav-links > li > button.nav-link-btn:hover{color:var(--text);background:rgba(139,166,201,.1)}
.nav-links svg{width:11px;height:11px;transition:transform .25s}
.nav-links li:hover svg{transform:rotate(180deg)}

.mega{
  position:absolute;top:calc(100% + 14px);left:50%;transform:translateX(-50%) translateY(8px);
  width:600px;padding:22px;
  opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease);
  background:rgba(9,20,36,.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:0 24px 60px -20px rgba(0,0,0,.55), 0 0 0 1px rgba(72,215,232,.06);
}
[data-theme="light"] .mega{background:rgba(255,255,255,.98)}
.nav-links li:hover .mega{opacity:1;pointer-events:auto;transform:translateX(-50%) translateY(0)}
.mega-head{font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-dim);margin-bottom:12px;padding:0 4px}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:4px}
.mega a{display:flex;align-items:flex-start;gap:12px;padding:11px 12px;border-radius:12px;color:var(--text);transition:background .2s}
.mega a:hover{background:rgba(72,215,232,.1)}
.mega-icon{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,rgba(46,155,240,.2),rgba(72,215,232,.06));
  border:1px solid var(--border-strong);color:var(--cyber-300);
  display:flex;align-items:center;justify-content:center;
}
.mega-icon svg{width:17px;height:17px}
.mega-text{display:flex;flex-direction:column;gap:2px;padding-top:2px}
.mega-text strong{font-size:13px;font-weight:600;line-height:1.3}
.mega-text span{font-size:11px;color:var(--text-dim);font-weight:400;line-height:1.4}
.mega-foot{
  display:flex;align-items:center;gap:6px;margin-top:14px;padding-top:14px;
  border-top:1px solid var(--border);font-size:12.5px;font-weight:600;color:var(--cyber-300);
}
.mega-foot svg{width:12px;height:12px}
@media(max-width:1100px){.mega{width:520px}}

.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  width:38px;height:38px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(139,166,201,.1);color:var(--text-muted);transition:.25s;flex-shrink:0;
}
.icon-btn:hover{background:rgba(139,166,201,.2);color:var(--text)}
.icon-btn svg{width:17px;height:17px}
.lang-btn{font-family:var(--font-mono);font-size:11.5px;font-weight:600;width:auto;padding:0 12px;border-radius:999px}

.nav-toggle{display:none;width:38px;height:38px;border-radius:50%;background:rgba(139,166,201,.1);align-items:center;justify-content:center}
.nav-toggle svg{width:18px;height:18px}

@media (max-width:980px){
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .brand .brand-sub{display:none}
  .nav-cta-desktop{display:none}
}

.mobile-drawer{
  position:fixed;inset:0;z-index:300;background:rgba(5,11,22,.97);backdrop-filter:blur(10px);
  display:flex;flex-direction:column;padding:100px 28px 40px;gap:6px;
  transform:translateY(-12px);opacity:0;pointer-events:none;transition:.35s var(--ease);
}
.mobile-drawer.open{transform:translateY(0);opacity:1;pointer-events:auto}
.mobile-drawer a{padding:16px 6px;border-bottom:1px solid var(--border);font-size:19px;font-family:var(--font-display)}
.mobile-drawer .btn{margin-top:24px}
.drawer-close{position:absolute;top:26px;right:26px;width:42px;height:42px;border-radius:50%;background:rgba(139,166,201,.12);display:flex;align-items:center;justify-content:center}

/* ---------- HERO ---------- */
.hero{min-height:100svh;display:flex;align-items:center;padding-top:140px;position:relative;overflow:hidden}
.hero-grid{position:absolute;inset:0;z-index:-1;opacity:.5;
  background-image:linear-gradient(rgba(72,215,232,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(72,215,232,.08) 1px,transparent 1px);
  background-size:64px 64px;mask-image:radial-gradient(ellipse 80% 60% at 50% 30%,black,transparent 80%);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;width:100%}
@media (max-width:980px){.hero-inner{grid-template-columns:1fr}}
.hero h1{font-size:clamp(38px,5.4vw,72px);letter-spacing:-.02em}
.hero h1 .grad{background:linear-gradient(100deg,var(--cyber-300),var(--cyber-500) 80%);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{margin-top:22px;font-size:clamp(16px,1.5vw,18.5px)}
.hero-stats{display:flex;gap:32px;margin-top:48px;flex-wrap:wrap}
.hero-stats .stat b{font-family:var(--font-display);font-size:28px;display:block;color:var(--cyber-300)}
.hero-stats .stat span{font-size:12.5px;color:var(--text-dim);font-family:var(--font-mono);letter-spacing:.04em}

/* hero villa photo card */
.villa-card{position:relative;aspect-ratio:1/1.02}
.villa-stage{
  width:100%;height:100%;border-radius:var(--radius-xl);border:1px solid var(--border);
  background:linear-gradient(155deg,var(--navy-800),var(--navy-950));
  position:relative;overflow:hidden;box-shadow:var(--shadow-glow);
}
.villa-stage svg,.villa-stage img{width:100%;height:100%;object-fit:cover;display:block}
.villa-caption{position:absolute;left:18px;bottom:18px;right:18px;display:flex;justify-content:space-between;align-items:flex-end;gap:10px}
.villa-caption .tag{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--cyber-300);text-transform:uppercase}

/* corner HUD brackets - signature structural device */
.hud-frame{position:relative}
.hud-frame::before,.hud-frame::after,.hud-frame .hud-tl,.hud-frame .hud-br{display:none}
.hud-corners::before,.hud-corners::after{
  content:"";position:absolute;width:26px;height:26px;border:2px solid var(--cyber-400);opacity:.6;
}
.hud-corners::before{top:-1px;left:-1px;border-right:none;border-bottom:none;border-top-left-radius:8px}
.hud-corners::after{bottom:-1px;right:-1px;border-left:none;border-top:none;border-bottom-right-radius:8px}

/* ---------- Trust strip ---------- */
.trust-strip{padding:34px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.trust-row{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:22px;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.06em;color:var(--text-dim);text-transform:uppercase}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr}}

.service-card{
  padding:32px 26px;display:flex;flex-direction:column;gap:16px;transition:transform .5s var(--ease),border-color .4s;
}
.service-card:hover{transform:translateY(-3px)}
.service-card .icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(140deg,rgba(46,155,240,.22),rgba(72,215,232,.08));
  border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;color:var(--cyber-300);
}
.service-card .icon svg{width:26px;height:26px}
.service-card h3{font-size:18.5px}
.service-card p{color:var(--text-muted);font-size:14.5px;flex:1}
.service-card ul{margin-top:6px;display:flex;flex-direction:column;gap:7px}
.service-card ul li{font-size:13.3px;color:var(--text-dim);display:flex;gap:8px;align-items:flex-start}
.service-card ul li::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--cyber-400);margin-top:7px;flex-shrink:0}
.service-card .go{margin-top:auto;display:flex;align-items:center;gap:6px;font-size:13.5px;color:var(--cyber-300);font-weight:600}
.service-card .go svg{width:13px;height:13px;transition:transform .25s}
.service-card:hover .go svg{transform:translateX(4px)}

/* ---------- stats counters ---------- */
.stat-block{text-align:center;padding:30px 18px}
.stat-block b{font-family:var(--font-display);font-size:clamp(34px,4vw,50px);color:var(--white);display:block}
.stat-block b .unit{font-size:.5em;color:var(--cyber-400)}
.stat-block span{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--text-dim);text-transform:uppercase}

/* ---------- process ---------- */
.process-track{position:relative;display:grid;grid-template-columns:repeat(7,1fr);gap:14px;margin-top:20px}
@media(max-width:1100px){.process-track{grid-template-columns:repeat(4,1fr)}}
@media(max-width:640px){.process-track{grid-template-columns:repeat(2,1fr)}}
.process-track::before{content:"";position:absolute;top:26px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--border-strong) 10%,var(--border-strong) 90%,transparent);z-index:0}
@media(max-width:1100px){.process-track::before{display:none}}
.process-step{position:relative;z-index:1;display:flex;flex-direction:column;gap:12px;padding:18px 16px;text-align:left}
.process-step .num{
  width:52px;height:52px;border-radius:50%;background:var(--navy-850);border:1px solid var(--border-strong);
  display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:14px;color:var(--cyber-300);
}
.process-step h4{font-size:15px}
.process-step p{font-size:12.8px;color:var(--text-dim)}

/* ---------- cybersecurity ---------- */
.shield-visual{position:relative;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.shield-visual svg{width:78%;height:78%}
.sec-feature{display:flex;gap:14px;align-items:flex-start;padding:16px 4px;border-bottom:1px solid var(--border)}
.sec-feature:last-child{border-bottom:none}
.sec-feature .check{width:26px;height:26px;border-radius:50%;background:rgba(62,207,142,.14);color:var(--success);display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}
.sec-feature .check svg{width:13px;height:13px}
.sec-feature h4{font-size:15px;margin-bottom:2px}
.sec-feature p{font-size:13px;color:var(--text-dim)}

/* ---------- portfolio ---------- */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px}
.filter-chip{padding:10px 18px;border-radius:999px;border:1px solid var(--border);font-size:13px;color:var(--text-muted);font-weight:500;transition:.25s}
.filter-chip:hover{border-color:var(--border-strong);color:var(--text)}
.filter-chip.active{background:var(--cyber-500);color:#031018;border-color:var(--cyber-500)}
.project-card{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);cursor:pointer;transition:.4s var(--ease)}
.project-card:hover{transform:translateY(-3px);border-color:var(--border-strong)}
.project-thumb{aspect-ratio:4/3;position:relative;overflow:hidden}
.project-thumb svg{width:100%;height:100%}
.project-thumb .badge{position:absolute;top:14px;left:14px;padding:6px 12px;border-radius:999px;background:rgba(5,11,22,.7);backdrop-filter:blur(6px);font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyber-300)}
.project-info{padding:20px}
.project-info h3{font-size:16.5px;margin-bottom:6px}
.project-info p{font-size:13px;color:var(--text-dim)}

/* project modal */
.modal-overlay{position:fixed;inset:0;z-index:400;background:rgba(4,9,18,.82);backdrop-filter:blur(6px);display:flex;align-items:center;justify-content:center;padding:24px;opacity:0;pointer-events:none;transition:.3s}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal-box{width:100%;max-width:760px;max-height:88vh;overflow-y:auto;background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:var(--radius-lg);padding:34px}
.modal-close{position:absolute;top:16px;right:16px}

/* ---------- testimonials ---------- */
.test-card{padding:30px}
.stars{display:flex;gap:3px;color:var(--gold-400);margin-bottom:16px}
.stars svg{width:15px;height:15px}
.test-card p.quote{font-size:14.5px;color:var(--text-muted);margin-bottom:20px}
.test-person{display:flex;align-items:center;gap:12px}
.test-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(140deg,var(--cyber-500),var(--navy-700));display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:600;font-size:14px;color:#fff}
.test-person b{display:block;font-size:13.5px}
.test-person span{font-size:11.5px;color:var(--text-dim)}
.video-test{position:relative;border-radius:var(--radius-lg);overflow:hidden;aspect-ratio:16/10;background:var(--navy-850);display:flex;align-items:center;justify-content:center;border:1px solid var(--border)}
.play-btn{width:60px;height:60px;border-radius:50%;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.3);display:flex;align-items:center;justify-content:center;backdrop-filter:blur(6px)}
.play-btn svg{width:20px;height:20px;margin-left:3px}

/* ---------- forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1/-1}
.field label{font-size:12.5px;color:var(--text-dim);font-family:var(--font-mono);letter-spacing:.04em}
.field input,.field select,.field textarea{
  padding:14px 16px;border-radius:12px;background:rgba(139,166,201,.06);border:1px solid var(--border);
  font-size:14.5px;transition:.25s;
}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyber-400);background:rgba(72,215,232,.06)}
.field textarea{resize:vertical;min-height:110px}

/* contact info cards */
.contact-card{display:flex;gap:16px;padding:22px;align-items:flex-start}
.contact-card .icon{width:44px;height:44px;border-radius:12px;background:rgba(72,215,232,.1);border:1px solid var(--border-strong);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--cyber-300)}
.contact-card .icon svg{width:20px;height:20px}
.contact-card h4{font-size:14.5px;margin-bottom:4px}
.contact-card p{font-size:13px;color:var(--text-dim)}
.map-frame{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);aspect-ratio:16/9}
.map-frame iframe{width:100%;height:100%;border:0;filter:grayscale(.3) invert(.92) contrast(.9)}
[data-theme="light"] .map-frame iframe{filter:none}

/* ---------- floating widgets ---------- */
.floating-stack{position:fixed;right:22px;bottom:22px;z-index:250;display:flex;flex-direction:column;gap:14px;align-items:flex-end}
.fab{width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 30px -6px rgba(0,0,0,.5);transition:.3s}
.fab:hover{transform:translateY(-3px) scale(1.05)}
.fab-whatsapp{background:#25d366;color:#04220f}
.fab-whatsapp svg{width:26px;height:26px}
.fab-chat{background:linear-gradient(135deg,var(--cyber-500),var(--cyber-400));color:#031018}
.fab-chat svg{width:24px;height:24px}

.chat-panel{position:fixed;right:22px;bottom:96px;z-index:260;width:320px;max-width:calc(100vw - 44px);
  background:var(--surface-solid);border:1px solid var(--border-strong);border-radius:var(--radius-lg);
  box-shadow:0 30px 70px -20px rgba(0,0,0,.6);opacity:0;transform:translateY(12px) scale(.98);pointer-events:none;transition:.3s var(--ease);overflow:hidden}
.chat-panel.open{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.chat-head{padding:16px 18px;background:linear-gradient(135deg,var(--cyber-500),var(--cyber-400));color:#031018;display:flex;justify-content:space-between;align-items:center}
.chat-head b{font-size:14px}
.chat-head span{font-size:11px;opacity:.8}
.chat-body{padding:16px 18px;display:flex;flex-direction:column;gap:10px;max-height:280px;overflow-y:auto}
.chat-msg{max-width:82%;padding:10px 13px;border-radius:14px;font-size:13px}
.chat-msg.bot{background:rgba(139,166,201,.1);align-self:flex-start;border-bottom-left-radius:4px}
.chat-msg.user{background:var(--cyber-500);color:#031018;align-self:flex-end;border-bottom-right-radius:4px}
.chat-input{display:flex;border-top:1px solid var(--border)}
.chat-input input{flex:1;padding:14px;background:transparent;border:none;font-size:13px}
.chat-input button{padding:0 16px;color:var(--cyber-400)}

/* ---------- calculator ---------- */
.calc-box{padding:36px}
.calc-row{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.calc-row label{font-size:13px;color:var(--text-muted);font-weight:600}
.chip-select{display:flex;gap:8px;flex-wrap:wrap}
.chip-opt{padding:9px 16px;border-radius:999px;border:1px solid var(--border);font-size:12.8px;transition:.2s}
.chip-opt.active{background:var(--cyber-500);color:#031018;border-color:var(--cyber-500)}
input[type=range]{-webkit-appearance:none;width:100%;height:5px;border-radius:3px;background:var(--navy-700)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:18px;height:18px;border-radius:50%;background:var(--cyber-400);box-shadow:0 0 0 4px rgba(72,215,232,.2);cursor:pointer}
.calc-result{margin-top:18px;padding:22px;border-radius:16px;background:rgba(72,215,232,.08);border:1px solid var(--border-strong);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.calc-result b{font-family:var(--font-display);font-size:30px;color:var(--cyber-300)}
.calc-result span{font-size:11.5px;color:var(--text-dim);font-family:var(--font-mono)}

/* ---------- demo page room tabs ---------- */
.room-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:32px}
.room-tab{padding:11px 20px;border-radius:999px;border:1px solid var(--border);font-size:13.5px;font-weight:500;color:var(--text-muted);transition:.25s;display:flex;align-items:center;gap:8px}
.room-tab.active{background:var(--cyber-500);color:#031018;border-color:var(--cyber-500)}
.demo-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:32px;align-items:start}
@media(max-width:960px){.demo-layout{grid-template-columns:1fr}}
.demo-visual{aspect-ratio:4/3;border-radius:var(--radius-xl);overflow:hidden;position:relative}
.demo-visual svg{width:100%;height:100%}
.toggle-switch{display:inline-flex;background:rgba(139,166,201,.1);border-radius:999px;padding:4px;gap:4px}
.toggle-switch button{padding:9px 20px;border-radius:999px;font-size:12.8px;font-weight:600;color:var(--text-dim);transition:.25s}
.toggle-switch button.active{background:var(--cyber-500);color:#031018}
.device-list{display:flex;flex-direction:column;gap:12px;margin-top:22px}
.device-row{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-radius:12px;background:rgba(139,166,201,.06);border:1px solid var(--border)}
.device-row .left{display:flex;align-items:center;gap:12px;font-size:13.5px}
.device-row .left .dot{width:8px;height:8px;border-radius:50%;background:var(--success);box-shadow:0 0 8px var(--success)}
.mini-switch{width:38px;height:22px;border-radius:999px;background:var(--navy-700);position:relative;transition:.25s}
.mini-switch.on{background:var(--cyber-500)}
.mini-switch::after{content:"";position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.25s}
.mini-switch.on::after{transform:translateX(16px)}

/* ---------- 3D room scene device nodes ---------- */
.room-svg{transition:transform .3s var(--ease)}
.device-node{cursor:default;transition:opacity .4s var(--ease),filter .4s var(--ease)}
.device-glow{animation:node-pulse 2.8s ease-in-out infinite}
.device-node.device-off{opacity:.32;filter:grayscale(.6)}
.device-node.device-off .device-glow{animation:none;opacity:0}
.device-node.device-off .device-ring{stroke-opacity:.4}
@keyframes node-pulse{
  0%,100%{opacity:.14}
  50%{opacity:.32}
}

/* ---------- live scene badge (used on room demo panels) ---------- */
.viewer-badge{z-index:2;padding:6px 12px;border-radius:999px;background:rgba(5,11,22,.65);backdrop-filter:blur(6px);font-family:var(--font-mono);font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--cyber-300)}

.cyber-banner{
  display:flex;align-items:center;gap:16px;padding:18px 22px;margin-bottom:36px;
  border:1px solid var(--border-strong);background:rgba(72,215,232,.06);
}
.cyber-banner .icn{width:38px;height:38px;border-radius:10px;background:rgba(72,215,232,.14);display:flex;align-items:center;justify-content:center;color:var(--cyber-300);flex-shrink:0}
.cyber-banner .icn svg{width:19px;height:19px}
.cyber-banner p{font-size:13.5px;color:var(--text-muted)}
.cyber-banner p strong{color:var(--text);font-weight:600}
.cyber-banner a{color:var(--cyber-300);font-weight:600;white-space:nowrap;margin-left:6px}

/* ---------- footer ---------- */
.site-footer{border-top:1px solid var(--border);padding:70px 0 26px;background:var(--navy-950)}
[data-theme="light"] .site-footer{background:#e2eaf3}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:50px}
@media(max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;row-gap:36px}}
@media(max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-grid h5{font-size:12.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);font-family:var(--font-mono);margin-bottom:18px}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{font-size:14px;color:var(--text-muted);transition:.2s}
.footer-links a:hover{color:var(--cyber-300)}
.footer-brand p{font-size:13.5px;color:var(--text-dim);max-width:38ch;margin-top:16px}
.social-row{display:flex;gap:10px;margin-top:20px}
.newsletter-box{display:flex;gap:0;border-radius:999px;border:1px solid var(--border);overflow:hidden}
.newsletter-box input{flex:1;padding:13px 16px;background:transparent;border:none;font-size:13px}
.newsletter-box button{padding:0 18px;background:var(--cyber-500);color:#031018;font-weight:600;font-size:13px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;padding-top:26px;border-top:1px solid var(--border);font-size:12.5px;color:var(--text-dim)}
.footer-bottom .legal-links{display:flex;gap:18px}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .8s var(--ease),transform .8s var(--ease)}
.reveal.in{opacity:1;transform:translateY(0)}

/* ---------- page hero (inner pages) ---------- */
.page-hero{padding:170px 0 70px;position:relative}
.page-hero .crumbs{font-family:var(--font-mono);font-size:12px;color:var(--text-dim);letter-spacing:.04em;margin-bottom:18px}
.page-hero .crumbs a{color:var(--cyber-400)}
.page-hero h1{font-size:clamp(32px,4.6vw,58px);max-width:20ch}
.split-2{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
@media(max-width:900px){.split-2{grid-template-columns:1fr}}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.tag-pill{padding:7px 14px;border-radius:999px;background:rgba(72,215,232,.1);border:1px solid var(--border-strong);font-size:11.5px;color:var(--cyber-300);font-family:var(--font-mono)}

.divider-gold{height:2px;width:64px;background:linear-gradient(90deg,var(--gold-400),transparent);margin:20px 0}

.cta-band{border-radius:var(--radius-xl);padding:clamp(40px,6vw,70px);text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,rgba(46,155,240,.16),rgba(72,215,232,.05));border:1px solid var(--border-strong)}
.cta-band h2{font-size:clamp(26px,3.4vw,40px);max-width:20ch;margin:0 auto}
.cta-band .btn-row{justify-content:center}

::selection{background:var(--cyber-400);color:#031018}
::-webkit-scrollbar{width:10px}
::-webkit-scrollbar-track{background:var(--navy-950)}
::-webkit-scrollbar-thumb{background:var(--navy-700);border-radius:6px}