:root{
  --bg:#06070a;
  --panel:#0b0f17;
  --line:rgba(120,170,255,.14);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.68);
  --blue:rgba(120,170,255,.9);
  --glow:rgba(120,170,255,.18);
  --radius:18px;
}

*{box-sizing:border-box}
html,body{height:100%}

body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:
    radial-gradient(1200px 900px at 70% 10%, rgba(120,170,255,.10), transparent 60%),
    radial-gradient(900px 900px at 20% 90%, rgba(120,170,255,.06), transparent 60%),
    var(--bg);
  color:var(--text);
}

a{color:inherit; text-decoration:none}

.container{
  max-width:1100px;
  margin:0 auto;
  padding:16px;
}

/* ================= HEADER ================= */

.header{
  position:fixed;
  left:0;
  right:0;
  top:0;
  z-index:50;
  backdrop-filter: blur(10px);
  background: linear-gradient(
    to bottom,
    rgba(6,7,10,.72),
    rgba(6,7,10,.12)
  );
  border-bottom: 1px solid rgba(120,170,255,.10);
}

.header__inner{
  display:flex;
  align-items:center;
  justify-content:center;
  height:64px; /* ajustado para logo grande */
}

.header__logo{
  display:flex;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  border-radius:999px;
  transition: background .2s ease, box-shadow .2s ease;
}

.header__logo img{
  height:36px;
  width:auto;
  opacity:.95;
}

.header__logo:hover{
  background: rgba(120,170,255,.06);
  box-shadow: 0 0 0 6px rgba(120,170,255,.08);
}

/* ================= BOTÓN FLOTANTE ================= */

.footer-fab{
  position:fixed;
  left:0;
  right:0;
  bottom:18px;
  display:flex;
  justify-content:center;
  z-index:60;
}

.fab{
  width:min(480px, calc(100% - 28px));
  border-radius:999px;
  padding:14px 18px;
  background: linear-gradient(
    180deg,
    rgba(120,170,255,.18),
    rgba(120,170,255,.08)
  );
  border:1px solid rgba(120,170,255,.22);
  box-shadow: 0 18px 60px rgba(0,0,0,.55);
  display:flex;
  align-items:center;
  justify-content:space-between;
  transition: transform .2s ease;
}

.fab strong{
  letter-spacing:.5px;
}

.fab span{
  color:var(--muted);
  font-size:13px;
}

.fab:hover{
  transform: translateY(-1px);
}

/* ================= UI ELEMENTS ================= */

.card{
  background: linear-gradient(
    180deg,
    rgba(255,255,255,.06),
    rgba(255,255,255,.03)
  );
  border:1px solid rgba(120,170,255,.14);
  border-radius: var(--radius);
  box-shadow: 0 16px 55px rgba(0,0,0,.45);
}

.btn{
  appearance:none;
  border:none;
  cursor:pointer;
  background: rgba(120,170,255,.14);
  border: 1px solid rgba(120,170,255,.22);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 14px;
  font-weight: 650;
  letter-spacing:.2px;
}

.btn:hover{
  background: rgba(120,170,255,.18);
}

.btn:active{
  transform: translateY(1px);
}

.small{
  font-size:13px;
  color:var(--muted);
}

.hr{
  height:1px;
  background:rgba(120,170,255,.12);
  margin:14px 0;
}