:root {
  --bg: #0b0f17;
  --bg-elev: #0f1522;
  --text: #e6e9ef;
  --muted: #a8b0bf;
  --accent-start: #6ee7f9; /* cyan-300 */
  --accent-end: #a78bfa;   /* violet-400 */
  --ring: rgba(110, 231, 249, 0.6);
}

* { box-sizing: border-box; }
html, body { height: 100%; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, "Helvetica Neue", Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background:
    radial-gradient(1200px 800px at 10% -10%, rgba(167, 139, 250, 0.18), transparent 50%),
    radial-gradient(1000px 700px at 90% 10%, rgba(110, 231, 249, 0.16), transparent 45%),
    linear-gradient(180deg, #0b0f17, #0b0f17 40%, #0e1421 100%);
  color: var(--text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout helpers */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4rem 1.25rem; }
.section__title { margin: 0 0 .5rem 0; font-size: clamp(1.5rem, 1.2vw + 1.2rem, 2.25rem); font-weight: 800; }
.section__subtitle { margin: 0 0 2rem 0; color: var(--muted); max-width: 60rem; }

/* Top navigation */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(130%) blur(8px);
  background: linear-gradient(180deg, rgba(11, 15, 23, 0.85), rgba(11, 15, 23, 0.6));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; }
.nav__brand { color: var(--text); text-decoration: none; font-weight: 800; letter-spacing: .02em; }
.nav__links { display: flex; align-items: center; gap: 1rem; }
.nav__links a { color: var(--muted); text-decoration: none; padding: .5rem .25rem; border-radius: .5rem; }
.nav__links a:hover { color: var(--text); }
.nav__cta { white-space: nowrap; }

/* Sections */
.grid { display: grid; gap: 1rem; }
.grid--3 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
@media (min-width: 700px) { .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); } }

.card {
  background: var(--bg-elev);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 1rem;
  padding: 1.25rem;
}
.card h3 { margin: 0 0 .35rem 0; font-size: 1.1rem; }
.card p { margin: 0; color: var(--muted); }

.card--soft { background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)); }
.section--cta { padding-top: 3rem; padding-bottom: 3rem; }
.card--cta { text-align: center; background: linear-gradient(180deg, rgba(167,139,250,0.08), rgba(110,231,249,0.06)); }

/* Floating action button - WhatsApp */
.fab {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  width: 56px;
  height: 56px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 12px 30px -10px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.12);
  z-index: 100;
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.fab:hover { transform: translateY(-1px); box-shadow: 0 16px 34px -10px rgba(0,0,0,0.55); }
.fab svg { width: 28px; height: 28px; display: block; }
.fab--whatsapp { background-color: #25D366; }
.fab--whatsapp svg { transform: translateY(0.5px); }

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 6rem 1.5rem 4rem;
  isolation: isolate;
}

.hero__glow {
  position: absolute;
  inset: -20vmax;
  background:
    radial-gradient(40vmax 40vmax at 20% 10%, rgba(167,139,250,0.18), transparent 60%),
    radial-gradient(35vmax 35vmax at 80% 15%, rgba(110,231,249,0.14), transparent 60%),
    radial-gradient(45vmax 45vmax at 50% -10%, rgba(56,189,248,0.12), transparent 60%);
  filter: blur(40px) saturate(120%);
  z-index: -1;
  pointer-events: none;
}

.hero__content { max-width: 72rem; margin-inline: auto; }

.eyebrow {
  margin: 0 0 0.75rem 0;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: .8rem;
}

.hero__title {
  margin: 0;
  font-weight: 800;
  line-height: 1.05;
  font-size: clamp(2rem, 5vw + 1rem, 4.25rem);
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__subtitle {
  margin: 1rem auto 0;
  color: var(--muted);
  font-size: clamp(1rem, 0.6vw + 1rem, 1.25rem);
  line-height: 1.6;
  max-width: 54rem;
}

.hero__actions {
  margin-top: 1.75rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 1.2rem;
  border-radius: 0.75rem;
  font-weight: 600;
  text-decoration: none;
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease, border-color 120ms ease, color 120ms ease;
  border: 1px solid transparent;
  will-change: transform;
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 4px var(--ring);
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent-start), var(--accent-end));
  color: #0b0f17;
  box-shadow: 0 10px 30px -10px rgba(167, 139, 250, 0.55), 0 6px 18px -12px rgba(110, 231, 249, 0.55);
}

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

.btn--ghost {
  background: transparent;
  border-color: rgba(230, 233, 239, 0.22);
  color: var(--text);
}

.btn--ghost:hover {
  border-color: rgba(230, 233, 239, 0.4);
  transform: translateY(-1px);
}

.footer {
  text-align: center;
  color: var(--muted);
  padding: 2rem 1rem 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --bg-elev: #f7f8fb;
    --text: #0b0f17;
    --muted: #5a6577;
  }
  body {
    background:
      radial-gradient(1200px 800px at 10% -10%, rgba(167, 139, 250, 0.18), transparent 50%),
      radial-gradient(1000px 700px at 90% 10%, rgba(110, 231, 249, 0.16), transparent 45%),
      linear-gradient(180deg, #ffffff, #f7f8fb 60%, #eef1f7 100%);
  }
  .footer { border-top-color: rgba(11, 15, 23, 0.06); }
}