/* ============================================
   Frostfield — Crystal Archive Aesthetic
   AI Marketing
   ============================================ */

:root{
  --bg-0:#0d0f12;
  --bg-1:#13161b;
  --bg-2:#1a1e25;
  --glass:rgba(214,221,230,0.06);
  --glass-2:rgba(214,221,230,0.10);
  --glass-border:rgba(196,205,216,0.22);
  --silver-0:#f4f6f9;
  --silver-1:#d6dde6;
  --silver-2:#aeb7c4;
  --silver-3:#7f8997;
  --accent:#9fb4c9;
  --accent-2:#c7d3e0;
  --shadow:0 18px 50px rgba(0,0,0,0.45);
  --radius:18px;
  --maxw:1180px;
  --font:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:
    radial-gradient(1200px 600px at 80% -10%,rgba(159,180,201,0.12),transparent 60%),
    radial-gradient(900px 500px at -10% 30%,rgba(199,211,224,0.08),transparent 60%),
    linear-gradient(180deg,var(--bg-0),var(--bg-1) 40%,var(--bg-0));
  color:var(--silver-1);
  line-height:1.65;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

a{color:var(--accent-2);text-decoration:none;transition:color .25s}
a:hover{color:var(--silver-0)}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Crystal panel ---------- */
.glass{
  background:linear-gradient(135deg,var(--glass-2),var(--glass));
  border:1px solid var(--glass-border);
  border-radius:var(--radius);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow), inset 0 1px 0 rgba(255,255,255,0.10);
  position:relative;
  overflow:hidden;
}
.glass::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(255,255,255,0.10) 0%,transparent 35%,transparent 65%,rgba(255,255,255,0.05) 100%);
  pointer-events:none;
}

/* ---------- Header ---------- */
header.site{
  position:sticky;top:0;z-index:100;
  backdrop-filter:blur(18px);
  background:linear-gradient(180deg,rgba(13,15,18,0.85),rgba(13,15,18,0.55));
  border-bottom:1px solid var(--glass-border);
}
.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:var(--maxw);margin:0 auto}
.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.25rem;letter-spacing:.5px;color:var(--silver-0)}
.brand img{width:34px;height:34px}
.brand span small{display:block;font-size:.62rem;letter-spacing:3px;color:var(--silver-3);font-weight:500}
.nav-links{display:flex;gap:6px;list-style:none;align-items:center;flex-wrap:wrap}
.nav-links a{
  padding:8px 14px;border-radius:10px;font-size:.92rem;color:var(--silver-2);
  border:1px solid transparent;transition:all .25s;
}
.nav-links a:hover,.nav-links a.active{
  color:var(--silver-0);background:var(--glass);border-color:var(--glass-border);
}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.burger span{width:26px;height:2px;background:var(--silver-1);border-radius:2px;transition:.3s}

/* ---------- Hero ---------- */
.hero{padding:90px 0 70px;position:relative}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.eyebrow{
  display:inline-block;font-size:.72rem;letter-spacing:4px;text-transform:uppercase;
  color:var(--accent);padding:7px 16px;border:1px solid var(--glass-border);
  border-radius:30px;background:var(--glass);margin-bottom:22px;
}
h1{font-size:clamp(2.1rem,4.5vw,3.4rem);line-height:1.1;color:var(--silver-0);font-weight:700;letter-spacing:-.5px}
h1 .grad{
  background:linear-gradient(120deg,var(--silver-0),var(--accent) 60%,var(--silver-3));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.lead{font-size:1.12rem;color:var(--silver-2);margin:22px 0 30px;max-width:560px}
.hero-art{position:relative}
.hero-art .stack{position:relative;height:420px}
.hero-art img{
  position:absolute;border-radius:16px;border:1px solid var(--glass-border);
  box-shadow:var(--shadow);object-fit:cover;
}
.hero-art .s1{width:74%;height:74%;top:0;right:0;z-index:3}
.hero-art .s2{width:55%;height:55%;bottom:0;left:0;z-index:2;opacity:.92}
.hero-art .s3{width:40%;height:40%;top:38%;right:18%;z-index:1;opacity:.7}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;cursor:pointer;
  padding:13px 26px;border-radius:12px;font-weight:600;font-size:.95rem;
  border:1px solid var(--glass-border);transition:all .28s;letter-spacing:.3px;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent-2),var(--accent));
  color:#0e1115;border-color:transparent;
  box-shadow:0 10px 30px rgba(159,180,201,0.25);
}
.btn-primary:hover{transform:translateY(-2px);color:#0a0c0f;box-shadow:0 16px 40px rgba(159,180,201,0.38)}
.btn-ghost{background:var(--glass);color:var(--silver-0)}
.btn-ghost:hover{background:var(--glass-2);transform:translateY(-2px)}
.btn-row{display:flex;gap:14px;flex-wrap:wrap}

/* ---------- Sections ---------- */
section{padding:72px 0}
.sec-head{text-align:center;max-width:680px;margin:0 auto 50px}
.sec-head .eyebrow{margin-bottom:16px}
h2{font-size:clamp(1.7rem,3.2vw,2.5rem);color:var(--silver-0);font-weight:700;letter-spacing:-.4px}
h3{color:var(--silver-0);font-size:1.25rem;margin-bottom:10px;font-weight:600}
.muted{color:var(--silver-3)}
.center{text-align:center}

/* ---------- Cards ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{padding:30px;transition:transform .3s,border-color .3s}
.card:hover{transform:translateY(-6px)}
.card .ico{
  width:52px;height:52px;border-radius:13px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--glass-2),var(--glass));border:1px solid var(--glass-border);
  margin-bottom:18px;font-size:1.5rem;color:var(--accent-2);
}
.card p{color:var(--silver-2);font-size:.96rem}

/* ---------- Feature row ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center;margin-bottom:30px}
.feature.rev{direction:rtl}
.feature.rev>*{direction:ltr}
.feature img{border-radius:16px;border:1px solid var(--glass-border);box-shadow:var(--shadow);height:340px;width:100%;object-fit:cover}
.feature ul{list-style:none;margin-top:18px}
.feature li{padding:9px 0 9px 30px;position:relative;color:var(--silver-2)}
.feature li::before{content:"◆";position:absolute;left:0;color:var(--accent);font-size:.8rem;top:11px}

/* ---------- Pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;align-items:stretch}
.price{padding:34px 30px;display:flex;flex-direction:column}
.price.feat{border-color:var(--accent);box-shadow:0 20px 60px rgba(159,180,201,0.22),inset 0 1px 0 rgba(255,255,255,0.12)}
.price .tag{font-size:.7rem;letter-spacing:3px;text-transform:uppercase;color:var(--accent);margin-bottom:6px}
.price .amount{font-size:2.6rem;font-weight:700;color:var(--silver-0);margin:8px 0}
.price .amount small{font-size:1rem;color:var(--silver-3);font-weight:400}
.price ul{list-style:none;margin:22px 0 26px;flex-grow:1}
.price li{padding:8px 0 8px 26px;position:relative;color:var(--silver-2);font-size:.94rem;border-bottom:1px solid rgba(196,205,216,0.08)}
.price li::before{content:"✓";position:absolute;left:0;color:var(--accent-2)}
.badge-pop{
  position:absolute;top:18px;right:-34px;background:linear-gradient(135deg,var(--accent-2),var(--accent));
  color:#0e1115;font-size:.66rem;font-weight:700;letter-spacing:2px;padding:6px 40px;transform:rotate(45deg);
}

/* ---------- Stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.stat .num{font-size:2.6rem;font-weight:700;color:var(--silver-0);
  background:linear-gradient(120deg,var(--silver-0),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.stat .lbl{color:var(--silver-3);font-size:.9rem;letter-spacing:.5px}

/* ---------- Forms ---------- */
form .field{margin-bottom:18px}
label{display:block;font-size:.85rem;color:var(--silver-2);margin-bottom:7px;letter-spacing:.3px}
input,textarea,select{
  width:100%;padding:13px 16px;border-radius:11px;
  background:rgba(13,15,18,0.55);border:1px solid var(--glass-border);
  color:var(--silver-0);font-family:inherit;font-size:.95rem;transition:border-color .25s,box-shadow .25s;
}
input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(159,180,201,0.15)}
textarea{resize:vertical;min-height:130px}
.checkbox{display:flex;gap:10px;align-items:flex-start}
.checkbox input{width:auto;margin-top:5px}
.form-note{font-size:.82rem;color:var(--silver-3);margin-top:8px}
.form-msg{padding:14px;border-radius:11px;margin-top:14px;display:none;font-size:.92rem}
.form-msg.ok{display:block;background:rgba(120,170,140,0.12);border:1px solid rgba(120,170,140,0.4);color:#bfe3cc}

/* ---------- Accordion ---------- */
.acc-item{margin-bottom:14px;padding:0;overflow:hidden}
.acc-q{padding:20px 26px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;color:var(--silver-0);font-weight:600;font-size:1.02rem}
.acc-q .pl{transition:transform .3s;color:var(--accent)}
.acc-item.open .acc-q .pl{transform:rotate(45deg)}
.acc-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 26px}
.acc-item.open .acc-a{max-height:300px;padding:0 26px 22px}
.acc-a p{color:var(--silver-2)}

/* ---------- Steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:s}
.step{padding:28px;position:relative}
.step .n{counter-increment:s;font-size:2rem;font-weight:700;color:var(--accent);opacity:.55}
.step .n::before{content:counter(s,decimal-leading-zero)}

/* ---------- CTA band ---------- */
.cta-band{padding:54px 44px;text-align:center;margin:30px 0}
.cta-band h2{margin-bottom:14px}
.cta-band p{color:var(--silver-2);max-width:560px;margin:0 auto 26px}

/* ---------- Legal / prose ---------- */
.prose{max-width:860px;margin:0 auto;padding:44px}
.prose h2{font-size:1.5rem;margin:34px 0 14px}
.prose h3{font-size:1.15rem;margin:24px 0 10px}
.prose p,.prose li{color:var(--silver-2);margin-bottom:12px;font-size:.97rem}
.prose ul,.prose ol{margin:0 0 16px 26px}
.prose .upd{color:var(--silver-3);font-size:.86rem;margin-bottom:24px}

/* ---------- Footer ---------- */
footer.site{border-top:1px solid var(--glass-border);margin-top:40px;padding:54px 0 26px;background:linear-gradient(180deg,transparent,rgba(13,15,18,0.6))}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:34px}
.foot-grid h4{color:var(--silver-0);font-size:.95rem;margin-bottom:16px;letter-spacing:.5px}
.foot-grid ul{list-style:none}
.foot-grid li{margin-bottom:9px}
.foot-grid a{color:var(--silver-3);font-size:.9rem}
.foot-grid a:hover{color:var(--silver-1)}
.foot-grid p{color:var(--silver-3);font-size:.9rem;margin-bottom:9px}
.foot-bottom{border-top:1px solid var(--glass-border);margin-top:36px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--silver-3);font-size:.84rem}

/* ---------- Cookie banner ---------- */
.cookie{
  position:fixed;bottom:20px;left:20px;right:20px;max-width:560px;margin:0 auto;z-index:200;
  padding:24px 26px;display:none;
}
.cookie.show{display:block;animation:rise .5s ease}
@keyframes rise{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
.cookie h4{color:var(--silver-0);margin-bottom:8px}
.cookie p{color:var(--silver-2);font-size:.88rem;margin-bottom:16px}
.cookie .row{display:flex;gap:12px;flex-wrap:wrap}
.cookie .btn{padding:10px 20px;font-size:.88rem}

/* ---------- Misc ---------- */
.tline{position:relative;padding-left:30px;border-left:1px solid var(--glass-border);margin-left:10px}
.tline .ti{margin-bottom:26px;position:relative}
.tline .ti::before{content:"";position:absolute;left:-37px;top:5px;width:13px;height:13px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(159,180,201,0.15)}
.tline .ti .yr{color:var(--accent);font-weight:700;font-size:.9rem;letter-spacing:1px}
.badge{display:inline-block;font-size:.72rem;letter-spacing:1px;padding:5px 12px;border-radius:20px;background:var(--glass);border:1px solid var(--glass-border);color:var(--silver-2);margin:3px}

/* ---------- Responsive ---------- */
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-art .stack{height:340px}
  .grid-3,.grid-4,.price-grid,.stats,.steps{grid-template-columns:1fr 1fr}
  .feature,.feature.rev{grid-template-columns:1fr;direction:ltr}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;
    background:var(--bg-1);padding:18px 24px;border-bottom:1px solid var(--glass-border);
  }
  .nav-links.show{display:flex}
  .nav-links a{width:100%}
  .burger{display:flex}
}
@media(max-width:560px){
  .grid-3,.grid-4,.price-grid,.stats,.steps,.grid-2,.foot-grid{grid-template-columns:1fr}
  section{padding:54px 0}
  .cta-band{padding:36px 22px}
  .prose{padding:28px 22px}
}