:root {
  --bg-0: #02060a;
  --bg-1: #0b1117;
  --bg-2: #0f1720;
  --accent: #00E6FF;
  --accent-2: #6FF3FF;
  --text: #E8FDFF;
  --muted: #96C7CF;
  --radius: 18px;
  --shadow: 0 0 40px rgba(0, 230, 255, .12), inset 0 0 40px rgba(0, 230, 255, .06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.6;
  letter-spacing: .2px;
  background-color: var(--bg-0); /* Fundo sólido e escuro */
}

a {
  color: var(--accent);
  text-decoration: none;
}

.container {
  max-width: 1150px;
  margin: 0 auto;
  padding: 0 20px;
}

p {
  text-align: justify;
}

/* HEADER */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(160%) blur(10px);
  background-color: var(--bg-1);
  border-bottom: 1px solid rgba(111,243,255,.15);
}
.topbar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  padding: 20px 0;
}
.logo {
  width: 240px;
  height: auto;
  filter: drop-shadow(0 0 12px rgba(0,230,255,.35));
}
.brand {
  display: flex;
  flex-direction: column;
}
.brand h1 {
  margin: 0;
  font-family: Orbitron, Inter, sans-serif;
  font-weight: 800;
  letter-spacing: 2.5px;
  font-size: clamp(24px, 5vw, 40px);
  text-transform: uppercase;
  color: var(--accent);
  text-shadow: 0 0 8px rgba(0,230,255,.55), 0 0 30px rgba(0,230,255,.35);
}
.brand small {
  color: var(--muted);
  margin-top: 2px;
  font-size: .85rem;
}

/* NAV */
nav {
  border-top: 1px solid rgba(111,243,255,.12);
  border-bottom: 1px solid rgba(111,243,255,.12);
  background-color: var(--bg-2);
}
.nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
  padding: 10px;
}
.nav a {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  color: var(--text);
  font-weight: 600;
  border-radius: 12px;
  transition: transform .15s ease, background-color .2s ease;
  background: rgba(0,230,255,.06);
  border: 1px solid rgba(111,243,255,.18);
  box-shadow: var(--shadow);
}
.nav a:hover {
  transform: translateY(-1px);
  background: rgba(0,230,255,.12);
}
.nav a.active {
  outline: 2px solid var(--accent);
  box-shadow: 0 0 0 6px rgba(0,230,255,.08);
}

/* MAIN */
main {
  padding: 48px 0;
}
section {
  padding: 28px 0;
}
.section-title {
  font-family: Orbitron, Inter, sans-serif;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-2);
  margin: 0 0 18px;
  font-size: 1.2rem;
}
.card {
  background-color: var(--bg-2);
  border: 1px solid rgba(111,243,255,.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
  margin-bottom: 20px;
  text-align: justify;
}
.card h3 {
  margin: 0 0 8px;
  color: var(--accent);
}

/* BOTÕES */
.card .cta {
  margin-top: 12px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid rgba(111,243,255,.35);
  background: var(--accent);
  color: #021018;
  cursor: pointer;
  text-decoration: none;
}
.btn.ghost {
  background: transparent;
  color: var(--accent);
}

/* GRID */
.grid {
  display: grid;
  gap: 18px;
}
@media (min-width: 820px) {
  .cols-3 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 680px) and (max-width: 819px) {
  .cols-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 679px) {
  .cols-3 { grid-template-columns: 1fr; }
}

/* FOOTER */
footer {
  border-top: 1px solid rgba(111,243,255,.12);
  padding: 28px 0;
  color: var(--muted);
  text-align: center;
  font-size: .9rem;
}