:root{
  --bg:#0f172a;
  --card-bg:#0b1220;
  --card-soft:#020617;
  --text:#e5e7eb;
  --muted:#9ca3af;
  --brand:#38bdf8;
  --brand-soft:rgba(56,189,248,0.14);
  --line:#1f2937;
  --danger:#ef4444;
  --success:#22c55e;
  --radius:18px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.35);
  --shadow-md:0 18px 40px rgba(15,23,42,.85);
}

*,
*::before,
*::after{
  box-sizing:border-box;
}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Helvetica,Arial,sans-serif;
  background:radial-gradient(circle at top, #1f2937 0, #020617 46%, #020617 100%);
  color:var(--text);
  line-height:1.6;
}

/* HEADER */

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  backdrop-filter:blur(16px);
  background:linear-gradient(to bottom, rgba(15,23,42,.94), rgba(15,23,42,.75));
  border-bottom:1px solid rgba(148,163,184,.25);
}

.topbar{
  max-width:1080px;
  margin:0 auto;
  padding:10px 16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}

.logo{
  font-weight:700;
  letter-spacing:.04em;
  font-size:15px;
  text-transform:uppercase;
  color:#e5e7eb;
}

.main-nav{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  justify-content:flex-end;
}

.main-nav a{
  font-size:13px;
  padding:6px 12px;
  border-radius:999px;
  color:#d1d5db;
  border:1px solid transparent;
  text-decoration:none;
  transition:all .18s ease;
  background:rgba(15,23,42,.4);
}

.main-nav a:hover{
  border-color:rgba(148,163,184,.5);
  background:rgba(15,23,42,.9);
}

.main-nav a.active{
  border-color:var(--brand);
  background:var(--brand-soft);
  color:#e5f3ff;
}

/* LAYOUT */

.container{
  max-width:1080px;
  margin:0 auto;
  padding:22px 16px 40px;
}

/* TYPOGRAPHY */

h1{
  font-size:clamp(24px,4vw,32px);
  margin:0 0 10px;
  letter-spacing:.01em;
}

h2{
  font-size:20px;
  margin:18px 0 8px;
}

h3{
  font-size:16px;
  margin:12px 0 6px;
}

p{
  margin:8px 0;
}

.muted{
  color:var(--muted);
  font-size:14px;
}

/* CARDS & SECTIONS */

.hero-card{
  border-radius:26px;
  padding:22px 20px;
  border:1px solid rgba(148,163,184,.35);
  background:
    radial-gradient(circle at top left, rgba(56,189,248,.17), transparent 55%),
    radial-gradient(circle at bottom right, rgba(96,165,250,.18), transparent 55%),
    var(--card-bg);
  box-shadow:var(--shadow-md);
  margin-bottom:20px;
}

.hero-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:8px;
  font-size:13px;
  color:var(--muted);
}

.hero-pill{
  padding:4px 10px;
  border-radius:999px;
  border:1px solid rgba(148,163,184,.4);
  background:rgba(15,23,42,.75);
}

.card{
  border-radius:var(--radius);
  padding:16px 18px;
  background:linear-gradient(145deg,var(--card-bg),var(--card-soft));
  border:1px solid rgba(31,41,55,.9);
  box-shadow:var(--shadow-sm);
  margin-bottom:14px;
}

.card-soft{
  border-radius:var(--radius);
  padding:14px 16px;
  background:rgba(15,23,42,.7);
  border:1px solid rgba(31,41,55,.85);
  margin-bottom:14px;
}

/* LISTS */

ul{
  padding-left:20px;
  margin:6px 0 8px;
}

ul li{
  margin:4px 0;
}

/* GRID */

.grid{
  display:grid;
  grid-template-columns:1.1fr 1.1fr;
  gap:14px;
}

@media (max-width:780px){
  .grid{
    grid-template-columns:1fr;
  }
}

/* BUTTONS / LINKS */

.btn-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  margin-top:4px;
  font-size:14px;
  color:var(--brand);
  text-decoration:none;
}

.btn-link::after{
  content:'→';
  font-size:13px;
}

.btn-link:hover{
  text-decoration:underline;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  font-size:14px;
  border-radius:999px;
  padding:8px 16px;
  border:1px solid transparent;
  cursor:pointer;
  font-family:inherit;
}

.btn.primary{
  background:var(--brand);
  border-color:var(--brand);
  color:#021318;
}

.btn.primary:hover{
  filter:brightness(1.05);
}

.btn.secondary{
  background:transparent;
  border-color:rgba(148,163,184,.6);
  color:var(--muted);
}

.btn.secondary:hover{
  border-color:var(--brand);
  color:var(--brand);
}

/* FORM */

form{
  display:grid;
  gap:10px;
}

label{
  font-size:14px;
  color:var(--muted);
}

input,
textarea{
  width:100%;
  border-radius:12px;
  border:1px solid rgba(55,65,81,.85);
  background:#020617;
  color:var(--text);
  padding:9px 11px;
  font:inherit;
}

textarea{
  min-height:120px;
  resize:vertical;
}

input:focus,
textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 1px rgba(56,189,248,.5);
}

/* ALERTS */

.alert{
  border-radius:12px;
  padding:9px 11px;
  font-size:14px;
  margin-bottom:8px;
}

.alert-ok{
  border:1px solid rgba(34,197,94,.8);
  background:rgba(21,128,61,.3);
  color:#bbf7d0;
}

.alert-err{
  border:1px solid rgba(239,68,68,.85);
  background:rgba(127,29,29,.35);
  color:#fecaca;
}

/* FOOTER */

.site-footer{
  border-top:1px solid rgba(31,41,55,.95);
  padding:14px 16px 18px;
  text-align:center;
  font-size:13px;
  color:var(--muted);
  background:radial-gradient(circle at top,rgba(15,23,42,.95),#020617 42%);
}

/* COOKIE BANNER */

.cookie-banner{
  position:fixed;
  inset:auto 0 18px 0;
  display:none;
  z-index:80;
}

.cookie-banner.show{
  display:flex;
  justify-content:center;
}

.cookie-inner{
  max-width:740px;
  width:calc(100% - 24px);
  background:rgba(15,23,42,.98);
  border-radius:18px;
  border:1px solid rgba(148,163,184,.5);
  box-shadow:0 20px 45px rgba(0,0,0,.85);
  padding:12px 14px;
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  align-items:center;
}

.cookie-inner p{
  margin:4px 0;
  font-size:13px;
  color:var(--muted);
}

.cookie-inner a{
  color:var(--brand);
}

.cookie-actions{
  display:flex;
  gap:8px;
  margin-left:auto;
}

@media (max-width:640px){
  .cookie-inner{
    flex-direction:column;
    align-items:flex-start;
  }
  .cookie-actions{
    margin-left:0;
  }
}