:root{
  --bg: #0b0f19;
  --panel: rgba(255,255,255,.06);
  --panel2: rgba(255,255,255,.10);
  --stroke: rgba(255,255,255,.12);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.65);
  --shadow: 0 18px 45px rgba(0,0,0,.45);
  --radius: 18px;
}

*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Helvetica Neue", sans-serif;
  background: radial-gradient(900px 500px at 15% 10%, rgba(120,80,255,.22), transparent 55%),
              radial-gradient(900px 500px at 85% 15%, rgba(0,170,255,.18), transparent 55%),
              radial-gradient(900px 500px at 50% 90%, rgba(0,255,170,.10), transparent 55%),
              var(--bg);
  color: var(--text);
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
  background: rgba(11,15,25,.55);
  border-bottom: 1px solid var(--stroke);
}

.brand{
  max-width: 1100px;
  margin: 0 auto;
  padding: 18px 18px;
  display: flex;
  gap: 14px;
  align-items: center;
}

.brand__mark{
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(120,80,255,.95), rgba(0,170,255,.85));
  box-shadow: 0 10px 30px rgba(0,0,0,.35);
}

.brand__text h1{
  margin: 0;
  font-size: 18px;
  letter-spacing: .2px;
}

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

.container{
  max-width: 1100px;
  margin: 0 auto;
  padding: 22px 18px 40px;
}

.grid{
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr)); /* 4 por fileira */
  gap: 14px;
  perspective: 900px; /* profundidade pros cards */
}

/* Card/botão */
.card{
  position: relative;
  border: 1px solid var(--stroke);
  background: linear-gradient(180deg, var(--panel), rgba(255,255,255,.03));
  border-radius: var(--radius);
  box-shadow: 0 8px 25px rgba(0,0,0,.25);
  overflow: hidden;
  transform-style: preserve-3d;
  transition: transform .18s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease;
  cursor: pointer;
  height: 112px; /* tamanho consistente */
}

.card::before{
  content:"";
  position:absolute;
  inset: -40%;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(255,255,255,.12), transparent 45%);
  opacity: 0;
  transition: opacity .18s ease;
}

.card:hover{
  transform: translateZ(18px) scale(1.02);
  background: linear-gradient(180deg, var(--panel2), rgba(255,255,255,.05));
  border-color: rgba(255,255,255,.20);
  box-shadow: var(--shadow);
}
.card:hover::before{ opacity: 1; }

.card:active{
  transform: translateZ(10px) scale(0.995);
}

.card__btn{
  appearance: none;
  border: 0;
  background: transparent;
  width: 100%;
  height: 100%;
  padding: 16px;
  display: grid;
  place-items: center;
}

.logo{
  width: 100%;
  height: 100%;
  max-height: 56px;
  object-fit: contain;
  transform: translateZ(24px);
  filter: drop-shadow(0 8px 18px rgba(0,0,0,.35));
}

/* Responsivo: mantém 4 colunas no desktop, reduz no mobile */
@media (max-width: 980px){
  .grid{ grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 640px){
  .grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card{ height: 104px; }
}

.footer{
  border-top: 1px solid var(--stroke);
  color: var(--muted);
  padding: 18px;
  text-align: center;
}