/* HD Expo landing page styles (minimal, premium) */
:root{
  --bg:#0b0c10;
  --bg2:#11131a;
  --card:#141824;
  --text:#f4f6fb;
  --muted:#b8c0d3;
  --line:rgba(255,255,255,.10);
  --brand:#ffffff;
  --accent:#ffffff;
  --shadow: 0 20px 60px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family: "Open Sans", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;background:var(--bg);color:var(--text);}

a{color:inherit;text-decoration:none}
a:hover{opacity:.9}
.container{max-width:1120px;margin:0 auto;padding:0 18px}

.topbar{position:sticky;top:0;z-index:50;background:rgba(11,12,16,.75);backdrop-filter: blur(12px);border-bottom:1px solid var(--line)}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0;gap:14px}
.brand{display:flex;align-items:center;gap:10px}
.brand__mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border:1px solid var(--line);border-radius:10px;font-weight:700}
.brand__text{font-weight:700;letter-spacing:.2px}

.topbar__nav{display:flex;gap:18px;align-items:center}
.topbar__nav a{font-size:14px;color:var(--muted)}
.topbar__nav a.btn{color:#0b0c10}
@media (max-width:860px){
  .topbar__nav a:not(.btn){display:none}
}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 18px;border-radius:14px;background:var(--brand);color:#0b0c10;font-weight:700;border:1px solid rgba(255,255,255,.12);box-shadow: var(--shadow)}
.btn--ghost{background:transparent;color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn--small{padding:10px 14px;border-radius:12px}
.btn--wide{width:100%;padding:16px 18px;border-radius:16px}

.hero{padding:52px 0 26px;background:
  radial-gradient(1200px 600px at 15% 20%, rgba(255,255,255,.08), transparent 60%),
  radial-gradient(900px 500px at 85% 30%, rgba(255,255,255,.06), transparent 55%),
  linear-gradient(180deg, var(--bg), var(--bg2));
  border-bottom:1px solid var(--line);
}
.hero__grid{display:grid;grid-template-columns:1.05fr .95fr;gap:26px;align-items:center}
@media (max-width:980px){ .hero__grid{grid-template-columns:1fr;gap:22px} }

.pill{display:inline-block;margin:0 0 12px;padding:8px 12px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:13px}
h1{font-size:44px;line-height:1.06;margin:0 0 12px;letter-spacing:-.6px}
@media (max-width:520px){ h1{font-size:34px} }

.subhead{margin:0 0 18px;color:var(--muted);font-size:18px;line-height:1.5;max-width:50ch}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap;margin:0 0 18px}
.bullets{margin:0;padding:0;list-style:none;display:grid;gap:10px}
.bullets li{display:flex;gap:10px;align-items:flex-start;color:var(--muted)}
.bullets li strong{color:var(--text)}

.video{position:relative;border-radius:22px;overflow:hidden;border:1px solid var(--line);box-shadow: var(--shadow);background:#0a0b0f}
.video__el{width:100%;height:420px;object-fit:cover;display:block}
@media (max-width:980px){ .video__el{height:320px} }
.video__overlay{position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:flex-start;padding:14px;background:linear-gradient(180deg, transparent 60%, rgba(0,0,0,.55))}
.video__hint{font-size:12px;color:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.18);padding:7px 10px;border-radius:999px;background:rgba(0,0,0,.25)}

.section{padding:56px 0;border-bottom:1px solid var(--line)}
.section--alt{background:linear-gradient(180deg, rgba(255,255,255,.02), transparent)}
.section--cta{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.01))}
.section__header{max-width:70ch;margin:0 0 26px}
.section__header h2{margin:0 0 10px;font-size:30px;letter-spacing:-.35px}
.section__header p{margin:0;color:var(--muted);font-size:16px;line-height:1.6}

.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
@media (max-width:980px){ .cards{grid-template-columns:repeat(2,1fr)} }
@media (max-width:560px){ .cards{grid-template-columns:1fr} }
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px;min-height:150px}
.card h3{margin:0 0 8px;font-size:16px}
.card p{margin:0;color:var(--muted);line-height:1.5}

.steps{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media (max-width:900px){ .steps{grid-template-columns:1fr} }
.steps li{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px}
.steps h3{margin:0 0 8px}
.steps p{margin:0;color:var(--muted);line-height:1.5}

.callout{margin-top:16px;border:1px dashed rgba(255,255,255,.22);border-radius:18px;padding:14px;color:rgba(255,255,255,.88);background:rgba(255,255,255,.03);line-height:1.6}

.proofgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:10px}
@media (max-width:900px){ .proofgrid{grid-template-columns:1fr} }
.proof{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px}
.proof__kpi{font-size:26px;font-weight:800;margin:0 0 6px}
.proof__label{color:var(--muted)}

.faq{margin-top:18px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:14px}
.faq h3{margin:0 0 10px}
details{border-top:1px solid var(--line);padding:10px 0}
details:first-of-type{border-top:none}
summary{cursor:pointer;color:var(--text);font-weight:700}
details p{margin:8px 0 0;color:var(--muted);line-height:1.6}

.alert{border-radius:18px;padding:14px;border:1px solid var(--line);margin:0 0 14px}
.alert--success{background:rgba(255,255,255,.05)}
.alert--error{background:rgba(255,80,80,.10);border-color:rgba(255,80,80,.25)}

.form{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px}
.form__grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
@media (max-width:760px){ .form__grid{grid-template-columns:1fr} }
label span{display:block;font-size:13px;color:var(--muted);margin:0 0 6px}
input,select,textarea{
  width:100%;padding:12px 12px;border-radius:14px;border:1px solid rgba(255,255,255,.16);
  background:rgba(0,0,0,.25);color:var(--text);outline:none
}
input:focus,select:focus,textarea:focus{border-color:rgba(255,255,255,.35)}
textarea{resize:vertical}
.span2{grid-column:1/-1}
.hp{position:absolute;left:-9999px;opacity:0;height:0;width:0}

.fineprint{margin:10px 0 0;color:rgba(255,255,255,.6);font-size:12px;line-height:1.5}

.footer{padding:28px 0}
.footer__inner{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;color:var(--muted);font-size:14px}
.footer__links{display:flex;gap:14px;flex-wrap:wrap}
.footer__links a{opacity:.9}


/* v3: more visible success + modal */
.alert--success{
  background: rgba(46, 204, 113, .12);
  border-color: rgba(46, 204, 113, .35);
}
.modal{
  position:fixed; inset:0; background:rgba(0,0,0,.55);
  display:flex; align-items:center; justify-content:center;
  padding:18px; z-index:9999;
}
.modal__inner{
  width:min(620px, 100%);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:22px;
  padding:18px;
  box-shadow: var(--shadow);
}
.modal__inner h3{ margin:0 0 10px; }
.modal__inner p{ margin:0 0 14px; color:var(--muted); line-height:1.6; }
.modal__actions{ display:grid; gap:10px; margin-top:10px; }
.modal__close{
  background:transparent; border:1px solid var(--line); color:var(--text);
  padding:12px 14px; border-radius:16px; cursor:pointer;
}


/* v7: Hero + Header Video Background */
.hero--video-bg{
  position: relative;
  overflow: hidden;
}
.hero--video-bg .hero__bg{
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.hero--video-bg .hero__bg video,
.hero--video-bg .hero__bg img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
}
.hero--video-bg .hero__bg:after{
  content:"";
  position:absolute;
  inset:0;
  /* darken for legibility */
  background: radial-gradient(1200px 600px at 20% 20%, rgba(0,0,0,.35), rgba(0,0,0,.72));
}
.hero--video-bg .hero__grid,
.hero--video-bg .container{
  position: relative;
  z-index: 1;
}

/* Make header float over video */
.topbar{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10,12,16,.55);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.08);
}

/* Ensure hero has enough height to showcase video */
.hero--video-bg{
  min-height: 78vh;
  display:flex;
  align-items: center;
  padding-top: 26px;
}
@media (max-width: 860px){
  .hero--video-bg{
    min-height: 70vh;
  }
}

.brand{
  display:flex;
  align-items:center;
  padding: 6px 0;
}
.brand:hover{ opacity: .9; }

.brand__logo{
  height: 34px;   /* tweak 28–40px */
  width: auto;
  display:block;
}
.brand__logo{
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.35));
}
/* Lock header logo size */
.topbar .brand__logo{
  height: 30px;       /* sweet spot for this logo */
  width: auto;
  max-height: 30px;
  display: block;
}
.topbar .brand{
  display: flex;
  align-items: center;
  line-height: 1;
}