/* ===========================================================
   ASTRA DIGITAL — Sistema visual
   Preto + Branco + Roxo  ·  Montserrat  ·  glow neon
   =========================================================== */

:root {
  /* Brand palette */
  --roxo: #5400ff;        /* Roxo Astra */
  --violeta: #7a11ff;     /* Violeta Elétrico */
  --lilas: #a855f7;       /* Lilás Digital */
  --preto: #000000;
  --branco: #f8f7ff;      /* Branco Premium */
  --cinza-claro: #b8b8c8;
  --cinza-escuro: #737383;

  /* Surfaces */
  --bg: #000000;
  --bg-soft: #050308;
  --card: rgba(18, 14, 28, 0.55);
  --card-solid: #0b0810;
  --line: rgba(168, 85, 247, 0.16);
  --line-strong: rgba(132, 84, 255, 0.42);

  /* Text */
  --tx: var(--branco);
  --tx-dim: #9a98ad;
  --tx-mute: #6d6a80;

  /* Accent (tweakable) */
  --accent: var(--roxo);
  --accent-2: var(--violeta);
  --accent-3: var(--lilas);
  --glow: 0.9;

  --maxw: 1240px;
  --pad: clamp(20px, 5vw, 80px);
  --radius: 18px;
  --radius-lg: 26px;

  --ease: cubic-bezier(.22,.61,.36,1);
  font-feature-settings: "kern" 1, "liga" 1;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; scroll-padding-top: 92px; overflow-x: hidden; }

body {
  font-family: "Montserrat", system-ui, sans-serif;
  background: var(--bg);
  color: var(--tx);
  line-height: 1.55;
  overflow-x: hidden;
  max-width: 100%;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- Layout helpers ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--pad); }
section { position: relative; overflow: hidden; }
.section-pad { padding-block: clamp(72px, 10vw, 150px); }

/* ---------- Type ---------- */
h1, h2, h3, h4 { font-weight: 700; line-height: 1.04; letter-spacing: -0.02em; text-wrap: balance; }
.h-display { font-size: clamp(2.6rem, 6.4vw, 5.3rem); }
.h-1 { font-size: clamp(2.1rem, 4.6vw, 3.7rem); }
.h-2 { font-size: clamp(1.55rem, 2.6vw, 2.35rem); }
.lead { font-size: clamp(1.05rem, 1.5vw, 1.3rem); color: var(--tx-dim); font-weight: 400; line-height: 1.6; text-wrap: pretty; }
.muted { color: var(--tx-dim); }

/* gradient text */
.grad {
  background: linear-gradient(100deg, var(--branco) 10%, var(--accent-3) 55%, var(--accent) 95%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* ---------- Eyebrow ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: .72rem; font-weight: 600; letter-spacing: .22em; text-transform: uppercase;
  color: var(--accent-3);
  padding: 7px 15px 7px 12px;
  border: 1px solid var(--line-strong);
  border-radius: 100px;
  background: rgba(84, 0, 255, 0.07);
}
.eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent-3);
  box-shadow: 0 0 calc(10px * var(--glow)) var(--accent-3);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-weight: 600; font-size: .98rem; letter-spacing: .005em;
  padding: 16px 28px; border-radius: 100px; border: 1px solid transparent;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .3s, border-color .3s;
  white-space: nowrap;
}
.btn svg { width: 18px; height: 18px; }
.btn-primary {
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,.06) inset,
              0 10px calc(34px * var(--glow)) rgba(84, 0, 255, .45);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 0 0 1px rgba(255,255,255,.1) inset, 0 14px calc(48px * var(--glow)) rgba(84,0,255,.6); }
.btn-ghost {
  background: rgba(255,255,255,.02);
  border-color: var(--line-strong);
  color: var(--branco);
}
.btn-ghost:hover { border-color: var(--accent-3); background: rgba(168,85,247,.08); transform: translateY(-2px); }

/* ---------- Botão branco/preto dinâmico ---------- */
.btn-light {
  position: relative;
  overflow: hidden;
  background: var(--branco);
  color: #08060f;
  border: 1px solid rgba(255,255,255,.7);
  box-shadow: 0 0 0 1px rgba(0,0,0,.04) inset, 0 8px calc(26px * var(--glow)) rgba(255,255,255,.14);
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), color .35s var(--ease), background .35s var(--ease);
}
/* brilho que cruza o botão */
.btn-light::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(115deg, transparent 30%, rgba(255,255,255,.85) 50%, transparent 70%);
  transform: translateX(-130%);
  transition: transform .7s var(--ease);
  pointer-events: none;
}
.btn-light:hover {
  transform: translateY(-2px);
  background: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,.5) inset, 0 14px calc(40px * var(--glow)) rgba(255,255,255,.3);
}
.btn-light:hover::before { transform: translateX(130%); }
.btn-light:active { transform: translateY(0); }

.btn-lg { padding: 19px 34px; font-size: 1.05rem; }

/* ---------- Circular icon badge ---------- */
.ico {
  --s: 56px;
  width: var(--s); height: var(--s); flex: 0 0 var(--s);
  display: grid; place-items: center; border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: radial-gradient(120% 120% at 30% 20%, rgba(84,0,255,.22), rgba(10,8,16,.4));
  box-shadow: 0 0 calc(22px * var(--glow)) rgba(84,0,255,.18), inset 0 0 18px rgba(132,84,255,.1);
  color: var(--accent-3);
}
.ico svg { width: 46%; height: 46%; }
.ico-sq { border-radius: 16px; }

/* ---------- Card ---------- */
.card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: transform .4s var(--ease), border-color .4s, box-shadow .4s, background .4s;
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(420px 200px at var(--mx,50%) 0%, rgba(132,84,255,.16), transparent 70%);
  transition: opacity .45s;
}
.card:hover { transform: translateY(-5px); border-color: var(--line-strong); box-shadow: 0 24px 70px rgba(0,0,0,.6); }
.card:hover::before { opacity: 1; }

/* ---------- Section glow backdrop ---------- */
.glow-orb {
  position: absolute; border-radius: 50%; filter: blur(90px); pointer-events: none; z-index: 0;
  opacity: calc(.5 * var(--glow));
}

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* thin diagonal grid lines (brand neon-lines motif) */
.grid-lines {
  position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 30%, transparent 78%);
}
.grid-lines::before {
  content: ""; position: absolute; inset: -50% -10% auto -10%; height: 200%;
  background-image:
    linear-gradient(to right, rgba(132,84,255,.10) 1px, transparent 1px);
  background-size: 78px 100%;
  transform: perspective(620px) rotateX(62deg);
  transform-origin: top center;
}
.grid-lines::after {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(to bottom, rgba(132,84,255,.10) 1px, transparent 1px);
  background-size: 100% 80px;
  -webkit-mask-image: linear-gradient(transparent, #000);
          mask-image: linear-gradient(transparent, #000);
  opacity: .5;
}