/* ============================================================
   AI&Media · Sistema Operacional — Design System partilhado
   Fonte única de tokens + componentes + acessibilidade.
   ============================================================ */

:root{
  /* cor */
  --bg:#FFFFFF; --bg-card:#FFFFFF; --bg2:#FAFAFA;
  --ink:#0E0E11; --ink2:#3A3A42; --muted:#70707A;
  --purple:#0E0E11; --purple-soft:#5A5A63;
  --lav:#F7F7F9; --tint:#F3F3F5;
  --dark:#0E0E11; --dark2:#161619; --dark-card:#18181B;
  --line:#ECECEF; --line-soft:#E3E3E7;
  --green:#1B8A5A; --orange:#3A3A42; --red:#C43D3D; --wa:#25D366;
  --cu-pink:#3A3A42; --cu-purple:#1F1F24; --cu-blue:#0E0E11;
  --grad:linear-gradient(135deg,#2A2A30,#0E0E11);
  --grad-cu:linear-gradient(90deg,#3A3A42 0%,#1F1F24 50%,#0E0E11 100%);
  /* espaçamento (múltiplos de 4) */
  --s1:4px; --s2:8px; --s3:12px; --s4:16px; --s5:24px; --s6:32px; --s7:48px; --s8:64px; --s9:80px; --s10:110px;
  /* raio */
  --r-sm:10px; --r-md:16px; --r-lg:20px; --r-pill:100px;
  /* sombra */
  --shadow-sm:0 8px 24px rgba(15,14,26,.06);
  --shadow-md:0 14px 34px rgba(15,14,26,.09);
  --shadow-dark:0 16px 40px rgba(0,0,0,.3);
  /* transição */
  --t:.2s ease;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{background:var(--bg);color:var(--ink);font-family:'Hanken Grotesk',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit}
img{max-width:100%}

/* Acessibilidade: foco de teclado visível e consistente */
:focus{outline:none}
:focus-visible{outline:2px solid var(--purple);outline-offset:3px;border-radius:6px}
.on-dark :focus-visible,.card--dark :focus-visible,.lb :focus-visible{outline-color:#fff}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* Layout */
.wrap{max-width:1100px;margin:0 auto;padding:0 24px}
.wrap--narrow{max-width:720px}
.section{padding:var(--s9) 0}

/* Eyebrow (kicker mono) */
.eyebrow{font-family:'Fragment Mono',monospace;font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--purple);display:inline-flex;align-items:center;gap:12px}
.eyebrow--rule::before{content:"";width:28px;height:1px;background:var(--purple)}

/* Section head */
.section-head h2{font-family:'Archivo',sans-serif;font-weight:800;font-size:clamp(28px,4vw,40px);letter-spacing:-.02em;line-height:1.1;margin-top:14px}

/* Botões — base + variantes */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:'Hanken Grotesk',sans-serif;font-weight:700;font-size:15px;line-height:1;min-height:52px;padding:0 24px;border:none;border-radius:var(--r-pill);text-decoration:none;cursor:pointer;transition:transform var(--t),box-shadow var(--t),background var(--t);white-space:nowrap}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn svg{width:18px;height:18px;flex-shrink:0}
.btn--primary{background:var(--ink);color:#fff;padding-left:8px}
.btn--primary:hover{box-shadow:0 8px 22px rgba(15,14,26,.22)}
.btn--primary .blk{width:40px;height:40px;border-radius:11px;background:var(--grad-cu);display:flex;align-items:center;justify-content:center;transition:transform var(--t)}
.btn--primary:hover .blk{transform:translateX(3px)}
.btn--primary .blk svg{stroke:#fff;fill:none;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;width:20px;height:20px}
.btn--ghost{background:var(--bg-card);color:var(--ink);border:1px solid var(--line)}
.btn--ghost:hover{border-color:var(--purple-soft);background:var(--lav)}
.btn--pill{background:var(--ink);color:#fff;min-height:44px;font-size:14px;padding:0 22px}
.btn--pill:hover{background:var(--purple)}
.btn--tint{background:var(--tint);color:var(--purple);min-height:44px;font-size:14px;padding:0 18px}
.btn--tint:hover{background:#EFE0D0}
.btn--wa{background:var(--wa);color:#fff}
.btn--wa svg{fill:#fff}
.btn--wa:hover{box-shadow:0 8px 22px rgba(37,211,102,.4)}
.btn--wide{width:100%}
.btn--on-dark.btn--primary{background:#fff;color:var(--ink)}

/* Link com seta */
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:14.5px;color:var(--ink);text-decoration:none}
.link-arrow svg{width:16px;height:16px;stroke:var(--purple);fill:none;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round;transition:transform var(--t)}
.link-arrow:hover svg{transform:translateX(3px)}
.card--dark .link-arrow,.on-dark .link-arrow{color:#fff}

/* Badges / pills */
.badge{display:inline-flex;align-items:center;font-family:'Fragment Mono',monospace;font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:#fff;background:var(--grad-cu);border-radius:var(--r-pill);padding:5px 12px}
.pill{display:inline-flex;align-items:center;gap:7px;font-family:'Fragment Mono',monospace;font-size:10.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted);border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 12px;white-space:nowrap}
.pill svg{width:13px;height:13px;flex-shrink:0}
.pill--dark{color:rgba(255,255,255,.6);border-color:rgba(255,255,255,.18)}

/* Card base + modificadores */
.card{position:relative;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--r-lg);padding:var(--s5) var(--s5);transition:transform var(--t),box-shadow var(--t),border-color var(--t)}
.card--hover:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--line-soft)}
.card--dark{background:var(--dark);border-color:var(--dark);color:#fff}
.card--feature{background:var(--dark);border-color:var(--dark);color:#fff}

/* Chip numérico */
.num-chip{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:9px;background:var(--tint);color:var(--purple);font-family:'Fragment Mono',monospace;font-size:13px;font-weight:700;flex-shrink:0}
.card--dark .num-chip,.card--feature .num-chip{background:rgba(255,255,255,.1);color:var(--purple-soft)}

/* Reveal (usado pela IntersectionObserver das páginas) */
.rv{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}