/* ============================================================
   IBD Software — estilos
   Paleta sóbria e moderna. Edite as variáveis abaixo à vontade.
   ============================================================ */

:root {
  --bg: #0b1220;
  --bg-soft: #111a2e;
  --card: #131d33;
  --border: #1f2a44;
  --text: #e8edf7;
  --text-muted: #9fb0cc;
  --brand: #2563eb;
  --brand-soft: #3b82f6;
  --radius: 16px;
  --maxw: 920px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* Brilho de fundo decorativo */
.bg-glow {
  position: fixed;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: min(900px, 120vw);
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.28),
    transparent 60%
  );
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}

/* ---------- Header ---------- */
.site-header {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 24px 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
}

.brand__mark {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: var(--brand);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.brand__name {
  font-size: 18px;
  color: var(--text-muted);
}

/* ---------- Hero ---------- */
main {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
}

.hero {
  text-align: center;
  padding: 56px 0 48px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-soft);
  margin-bottom: 16px;
}

.hero__title {
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, #ffffff, #b9c6e0);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  max-width: 16ch;
  margin: 0 auto;
}

.hero__subtitle {
  margin: 22px auto 0;
  max-width: 46ch;
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-muted);
}

.hero__subtitle strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- Sobre ---------- */
.about {
  padding: 24px 0 64px;
}

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 18px;
}

.about__text {
  max-width: 60ch;
  margin: 0 auto 40px;
  text-align: center;
  color: var(--text-muted);
  font-size: 1.05rem;
}

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

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--brand);
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 28px 20px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- Responsivo ---------- */
@media (max-width: 720px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 40px 0 32px;
  }
}

/* Respeita quem prefere menos movimento */
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
    transition: none !important;
  }
}