/* =========================================================
   Nebula OS — estilos do exemplo principal
   ========================================================= */

:root {
  --bg: #070a17;
  --bg-2: #0d1230;
  --text: #eef1ff;
  --muted: #9aa3c7;
  --accent: #6c8cff;
  --accent-2: #b06cff;
  --glass: rgba(255, 255, 255, 0.06);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  padding-top: 58px;          /* espaço para a nav fixa */
  line-height: 1.6;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  height: calc(100vh - 58px);
  min-height: 600px;
}

@supports (height: 100dvh) {
  .hero { height: calc(100dvh - 58px); }
}
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: radial-gradient(ellipse at 50% 120%, var(--bg-2) 0%, var(--bg) 60%);
}

/* Camadas que se movem com o mouse (parallax 2D) */
.layer {
  position: absolute;
  pointer-events: none;
  will-change: transform;
}

.layer-star {
  inset: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 20% 30%, #fff, transparent),
    radial-gradient(1px 1px at 40% 70%, #fff, transparent),
    radial-gradient(2px 2px at 60% 20%, #fff, transparent),
    radial-gradient(1px 1px at 80% 50%, #fff, transparent),
    radial-gradient(1.5px 1.5px at 90% 80%, #fff, transparent),
    radial-gradient(1px 1px at 10% 85%, #fff, transparent),
    radial-gradient(1px 1px at 70% 90%, #fff, transparent);
}

.layer-planet {
  width: 340px; height: 340px;
  left: 8%; top: 12%;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #ffb36c, #c14b4b 55%, #5a1f3f 100%);
  box-shadow: 0 0 80px rgba(255, 130, 90, 0.35);
}

.layer-ring {
  width: 560px; height: 200px;
  right: -5%; top: 18%;
  border: 6px solid rgba(140, 170, 255, 0.35);
  border-radius: 50%;
  transform: rotate(-18deg);
  box-shadow: 0 0 40px rgba(140, 170, 255, 0.2);
}

.layer-astro {
  width: 130px; height: 130px;
  right: 12%; bottom: 20%;
  font-size: 90px;
  text-align: center;
}

.hero-content { position: relative; z-index: 2; padding: 0 20px; }

.eyebrow {
  display: inline-block;
  text-transform: uppercase;
  letter-spacing: 4px;
  font-size: 0.85rem;
  color: var(--accent);
  border: 1px solid rgba(108, 140, 255, 0.4);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.title {
  font-size: clamp(3rem, 10vw, 7rem);
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1;
  text-shadow: 0 10px 60px rgba(108, 140, 255, 0.45);
}

.title span {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.15rem;
}

.subtitle strong { color: var(--text); }

.cta { margin-top: 34px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  padding: 13px 28px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn:hover { transform: translateY(-3px); }

.btn-primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 8px 30px rgba(108, 140, 255, 0.4);
}

.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--text);
}

.btn-big { font-size: 1.05rem; padding: 16px 38px; }

.scroll-hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 2px;
  animation: bob 1.8s ease-in-out infinite;
}

@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

/* ---------- PARALLAX DE SCROLL (fundo deslizante) ---------- */
.parallax-bg {
  position: relative;
  height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.parallax-bg-layer {
  position: absolute;
  inset: -50% 0;             /* bem maior que a tela: nunca mostra borda */
  background: linear-gradient(180deg, #0d1230, #1c0f3c 50%, #0d1230);
  background-image:
    linear-gradient(180deg, #0d1230, #1c0f3c 50%, #0d1230),
    radial-gradient(circle at 20% 30%, rgba(108, 140, 255, 0.25), transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(176, 108, 255, 0.25), transparent 45%);
  will-change: transform;
}

.card-glass {
  position: relative;
  z-index: 2;
  max-width: 640px;
  margin: 0 20px;
  padding: 44px 40px;
  background: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  backdrop-filter: blur(14px);
  text-align: center;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
}

.card-glass h2 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin-bottom: 12px; }
.card-glass h2 span { color: var(--accent-2); }
.card-glass p { color: var(--muted); }

/* ---------- CARDS TILT 3D ---------- */
.cards, .examples { padding: 110px 20px; text-align: center; }
.examples .grid { max-width: 1080px; }

.section-title { font-size: clamp(1.8rem, 5vw, 2.6rem); margin-bottom: 50px; }
.section-title span { color: var(--accent); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 26px;
  max-width: 1000px;
  margin: 0 auto;
}

.tilt-card {
  background: linear-gradient(160deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  padding: 36px 26px;
  perspective: 800px;               /* necessário para o tilt 3D */
  will-change: transform;
}

.tilt-inner { transform-style: preserve-3d; }

.icon {
  font-size: 2.6rem;
  margin-bottom: 14px;
  display: inline-block;
  will-change: transform;          /* ícone flutua com profundidade extra */
}

.tilt-card h3 { margin-bottom: 8px; font-size: 1.25rem; }
.tilt-card p { color: var(--muted); font-size: 0.95rem; }

/* links que viram cards de exemplo */
.example-link { display: block; text-decoration: none; color: inherit; }

/* ---------- CTA ---------- */
.cta-section {
  position: relative;
  padding: 130px 20px;
  text-align: center;
  overflow: hidden;
}

.cta-orb {
  position: absolute;
  width: 500px; height: 500px;
  left: 50%; top: 50%;
  margin: -250px 0 0 -250px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108, 140, 255, 0.25), transparent 65%);
  will-change: transform;
}

.cta-section h2 { font-size: clamp(2rem, 6vw, 3.4rem); position: relative; }
.cta-section h2 span { color: var(--accent-2); }
.cta-section p { color: var(--muted); margin: 14px 0 34px; position: relative; }
.cta-section .btn { position: relative; }

/* ---------- FOOTER ---------- */
footer {
  padding: 30px 20px;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--muted);
  font-size: 0.85rem;
}

/* ---------- REVEAL AO ROLAR ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsivo: desativa efeitos pesados em telas pequenas */
@media (max-width: 640px) {
  .layer-ring { display: none; }
  .layer-planet { width: 200px; height: 200px; }
}