/* ============================================================
   WMC Company LTDA — Design System "Androide"
   Paleta: ink (preto azulado) + cognition (âmbar) + synapse (azul)
   Tipografia: Space Grotesk (display) + Inter (corpo)
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  --ink: #0A0A0F;
  --ink-soft: #13131A;
  --ink-elev: #1A1A22;
  --ink-line: #26262F;
  --bone: #F5F2EC;
  --bone-muted: #A8A39A;
  --bone-dim: #6E6A64;
  --cognition: #E8A33D;
  --cognition-soft: #3A2E15;
  --cognition-glow: rgba(232, 163, 61, 0.18);
  --synapse: #6B8AFF;
  --synapse-soft: #1A2240;
  --danger: #E5484D;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  --radius: 0.75rem;
  --radius-lg: 1rem;
  --radius-pill: 9999px;
  --container: 1200px;
  --pad-y: 6rem;
  --pad-y-sm: 4rem;
  --t: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--bone);
  line-height: 1.6;
  font-size: 17px;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--t); }
a:hover { color: var(--cognition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding-block: var(--pad-y); position: relative; }
.section--alt { background: var(--ink-soft); }
.section__head { max-width: 720px; margin-bottom: 3.5rem; }
.section__eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--cognition);
  margin-bottom: 1.25rem;
}
.section__eyebrow::before { content: ""; width: 1.75rem; height: 1px; background: var(--cognition); display: inline-block; }
.section__title {
  font-family: var(--font-display); font-size: clamp(1.9rem, 4vw, 2.75rem);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.15;
}
.section__lead { margin-top: 1.25rem; color: var(--bone-muted); font-size: 1.1rem; max-width: 60ch; }
.text-cog { color: var(--cognition); }
.text-syn { color: var(--synapse); }

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.55rem;
  font-family: var(--font-body); font-size: 0.95rem; font-weight: 500;
  padding: 0.95rem 1.75rem; border-radius: var(--radius);
  transition: all var(--t); white-space: nowrap; border: 1px solid transparent;
}
.btn--primary { background: var(--cognition); color: var(--ink); border-color: var(--cognition); }
.btn--primary:hover { background: transparent; color: var(--cognition); box-shadow: 0 0 0 1px var(--cognition), 0 8px 32px var(--cognition-glow); }
.btn--ghost { background: transparent; color: var(--bone); border-color: var(--ink-line); }
.btn--ghost:hover { border-color: var(--cognition); color: var(--cognition); }

/* ---------- Header ---------- */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding-block: 1.25rem; transition: background var(--t), border-color var(--t), padding var(--t);
  border-bottom: 1px solid transparent;
}
.header.is-scrolled { background: rgba(10, 10, 15, 0.82); backdrop-filter: blur(12px); border-bottom-color: var(--ink-line); padding-block: 0.85rem; }
.header__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.brand { display: flex; align-items: center; gap: 0.65rem; }
.brand__mark { width: 38px; height: 38px; }
.brand__name { font-family: var(--font-display); font-weight: 600; font-size: 1.2rem; letter-spacing: -0.01em; }
.brand__name span { color: var(--cognition); }
.nav { display: flex; align-items: center; gap: 2rem; }
.nav a { font-size: 0.92rem; color: var(--bone-muted); font-weight: 450; }
.nav a:hover { color: var(--bone); }
.header__cta { display: flex; align-items: center; gap: 1rem; }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border: 1px solid var(--ink-line); border-radius: var(--radius); }
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  content: ""; display: block; width: 18px; height: 2px; background: var(--bone); position: relative; transition: var(--t);
}
.menu-toggle span::before { position: absolute; top: -6px; left: 0; }
.menu-toggle span::after { position: absolute; top: 6px; left: 0; }

/* ---------- Hero ---------- */
.hero {
  padding-top: 10.5rem; padding-bottom: 5.5rem; position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center; text-align: center;
}
/* Fundo: mesh abstrato de glows sutis */
.hero::before {
  content: ""; position: absolute; top: -12%; left: 50%; transform: translateX(-50%);
  width: 80vw; height: 80vw; max-width: 900px; max-height: 900px; border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, var(--cognition-soft), transparent 50%),
              radial-gradient(circle at 65% 60%, var(--synapse-soft), transparent 50%);
  filter: blur(60px); z-index: 0; opacity: 0.6;
}
.hero::after {
  content: ""; position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--ink-line), transparent);
}
.hero__content { position: relative; z-index: 1; max-width: 780px; margin: 0 auto; }
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.6rem; font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--cognition);
  border: 1px solid var(--ink-line); padding: 0.4rem 0.85rem; border-radius: var(--radius-pill); background: var(--ink-soft);
  margin-bottom: 1.75rem;
}
.hero__eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cognition); box-shadow: 0 0 12px var(--cognition); animation: pulse-dot 2s infinite; }
.hero__title {
  font-family: var(--font-display); font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 600; line-height: 1.04; letter-spacing: -0.03em; margin-bottom: 1.5rem;
}
.hero__title em { font-style: normal; color: var(--cognition); }
.hero__sub { font-size: 1.2rem; color: var(--bone-muted); max-width: 56ch; margin: 0 auto 2.5rem; }
.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
.hero__meta { display: flex; gap: 3rem; margin-top: 4rem; flex-wrap: wrap; justify-content: center; }
.hero__stat .num { font-family: var(--font-display); font-size: 2rem; font-weight: 600; color: var(--bone); }
.hero__stat .label { font-size: 0.8rem; color: var(--bone-dim); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.25rem; }
.hero__divider { width: 60px; height: 2px; background: var(--cognition); margin: 2rem auto 0; border-radius: 1px; opacity: 0.6; }

/* Float/rings mantidos para outras áreas se necessário */
.float-1 { animation: float1 6s ease-in-out infinite; }
.float-2 { animation: float2 8s ease-in-out infinite; }
.float-3 { animation: float3 7s ease-in-out infinite; }

/* ---------- Pilares ---------- */
.pillars { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }
.pillar {
  background: var(--ink-soft); border: 1px solid var(--ink-line); border-radius: var(--radius-lg);
  padding: 2rem 1.75rem; transition: border-color var(--t), transform var(--t);
}
.pillar:hover { border-color: var(--cognition); transform: translateY(-4px); }
.pillar__num { font-family: var(--font-mono); font-size: 0.78rem; color: var(--cognition); letter-spacing: 0.1em; margin-bottom: 1rem; }
.pillar__title { font-family: var(--font-display); font-size: 1.18rem; font-weight: 600; margin-bottom: 0.65rem; }
.pillar__text { font-size: 0.92rem; color: var(--bone-muted); line-height: 1.55; }

/* ---------- Capacidades ---------- */
.caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.cap {
  background: var(--ink); border: 1px solid var(--ink-line); border-radius: var(--radius-lg);
  padding: 1.85rem 1.6rem; transition: border-color var(--t), background var(--t); position: relative; overflow: hidden;
}
.cap:hover { border-color: var(--cognition); background: var(--ink-soft); }
.cap::after {
  content: ""; position: absolute; left: 0; top: 0; height: 2px; width: 0; background: var(--cognition); transition: width var(--t);
}
.cap:hover::after { width: 100%; }
.cap__icon { width: 44px; height: 44px; margin-bottom: 1.25rem; color: var(--cognition); }
.cap__icon svg { width: 100%; height: 100%; }
.cap__title { font-family: var(--font-display); font-size: 1.15rem; font-weight: 600; margin-bottom: 0.6rem; }
.cap__desc { font-size: 0.92rem; color: var(--bone-muted); line-height: 1.55; margin-bottom: 1.1rem; }
.cap__tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.tag {
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.04em;
  padding: 0.28rem 0.65rem; border-radius: var(--radius-pill); background: var(--cognition-soft); color: var(--cognition);
}

/* ---------- Processo ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.process::before { content: ""; position: absolute; top: 28px; left: 12.5%; right: 12.5%; height: 1px; background: var(--ink-line); }
.step { position: relative; padding-right: 1.5rem; }
.step__node {
  width: 56px; height: 56px; border-radius: 50%; background: var(--ink); border: 1px solid var(--ink-line);
  display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-weight: 600;
  font-size: 1.1rem; color: var(--bone-muted); position: relative; z-index: 1; margin-bottom: 1.5rem; transition: var(--t);
}
.step:hover .step__node { border-color: var(--cognition); color: var(--cognition); box-shadow: 0 0 0 4px var(--cognition-soft); }
.step__title { font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; margin-bottom: 0.5rem; }
.step__text { font-size: 0.9rem; color: var(--bone-muted); line-height: 1.55; }

/* ---------- Academia ---------- */
.acad { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
.acad__quote { font-family: var(--font-display); font-size: clamp(1.35rem, 2.4vw, 1.9rem); font-weight: 500; line-height: 1.35; letter-spacing: -0.01em; }
.acad__quote em { font-style: normal; color: var(--cognition); }
.acad__cite { margin-top: 1.5rem; font-size: 0.85rem; color: var(--bone-dim); font-family: var(--font-mono); letter-spacing: 0.05em; }
.acad__items { display: grid; gap: 1rem; margin-top: 2.25rem; }
.acad__item { display: flex; gap: 1rem; align-items: flex-start; padding: 1.25rem 1.5rem; background: var(--ink-soft); border: 1px solid var(--ink-line); border-radius: var(--radius); }
.acad__item .ico { color: var(--cognition); flex: none; margin-top: 2px; }
.acad__item h4 { font-family: var(--font-display); font-size: 1rem; font-weight: 600; margin-bottom: 0.25rem; }
.acad__item p { font-size: 0.88rem; color: var(--bone-muted); }

/* Feed arXiv (estado da arte) */
.acad__feed { background: var(--ink-soft); border: 1px solid var(--ink-line); border-radius: var(--radius-lg); padding: 1.5rem; }
.feed__head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.25rem; }
.feed__label { display: inline-flex; align-items: center; gap: 0.55rem; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cognition); }
.feed__pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--cognition); box-shadow: 0 0 10px var(--cognition); animation: pulse-dot 2s infinite; }
.feed__link { font-size: 0.8rem; color: var(--bone-muted); font-family: var(--font-mono); }
.feed__link:hover { color: var(--cognition); }
.feed { display: grid; gap: 0.6rem; list-style: none; }
.feed__item { display: block; padding: 0.85rem 1rem; border: 1px solid var(--ink-line); border-radius: var(--radius); transition: border-color var(--t), background var(--t); }
.feed__item a { display: block; }
.feed__item:hover { border-color: var(--cognition); background: var(--ink); }
.feed__title { font-size: 0.9rem; font-weight: 500; line-height: 1.4; color: var(--bone); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.feed__meta { margin-top: 0.45rem; font-size: 0.72rem; color: var(--bone-dim); font-family: var(--font-mono); display: flex; gap: 0.75rem; flex-wrap: wrap; }
.feed__meta .cat { color: var(--cognition); }
.feed__item--skeleton { cursor: default; }
.feed__skel { height: 12px; border-radius: 4px; background: linear-gradient(90deg, var(--ink-elev), var(--ink-line), var(--ink-elev)); background-size: 200% 100%; animation: skel 1.4s infinite; }
.feed__skel--short { width: 55%; height: 10px; margin-top: 8px; }
@keyframes skel { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.feed__empty { font-size: 0.85rem; color: var(--bone-muted); padding: 0.5rem 0; }
.feed__empty a { color: var(--cognition); }

/* ---------- Contato ---------- */
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.contact__intro h2 { font-family: var(--font-display); font-size: clamp(1.9rem, 4vw, 2.75rem); font-weight: 600; letter-spacing: -0.02em; margin-bottom: 1.25rem; }
.contact__intro p { color: var(--bone-muted); margin-bottom: 2rem; }
.contact__channels { display: grid; gap: 0.85rem; }
.channel { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem; border: 1px solid var(--ink-line); border-radius: var(--radius); }
.channel .ico { color: var(--cognition); }
.channel .k { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--bone-dim); }
.channel .v { font-weight: 500; }
.form { background: var(--ink-soft); border: 1px solid var(--ink-line); border-radius: var(--radius-lg); padding: 2.25rem; }
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-size: 0.8rem; color: var(--bone-muted); margin-bottom: 0.5rem; font-family: var(--font-mono); letter-spacing: 0.04em; }
.field input, .field textarea, .field select {
  width: 100%; background: var(--ink); border: 1px solid var(--ink-line); border-radius: var(--radius);
  padding: 0.85rem 1rem; color: var(--bone); font-family: var(--font-body); font-size: 0.95rem; transition: border-color var(--t);
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--cognition); }
.field textarea { resize: vertical; min-height: 120px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form__submit { width: 100%; margin-top: 0.5rem; }
.form__note { font-size: 0.78rem; color: var(--bone-dim); margin-top: 1rem; text-align: center; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--ink-line); padding-block: 3rem 2rem; }
.footer__top { display: flex; justify-content: space-between; align-items: flex-start; gap: 2rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.footer__brand { max-width: 320px; }
.footer__brand p { font-size: 0.9rem; color: var(--bone-muted); margin-top: 1rem; }
.footer__cols { display: flex; gap: 3rem; flex-wrap: wrap; }
.footer__col h5 { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cognition); margin-bottom: 1rem; }
.footer__col a { display: block; font-size: 0.9rem; color: var(--bone-muted); margin-bottom: 0.6rem; }
.footer__bottom { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 2rem; border-top: 1px solid var(--ink-line); font-size: 0.82rem; color: var(--bone-dim); }
.footer__motto { font-family: var(--font-mono); letter-spacing: 0.05em; color: var(--cognition); }

/* ---------- Animações ---------- */
@keyframes pulse-dot { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }
@keyframes float1 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes float2 { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-18px); } }
@keyframes float3 { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(8px, -10px); } }
@keyframes fade-up { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
[data-reveal] { opacity: 0; }
[data-reveal].in { animation: fade-up 0.7s var(--t) forwards; }

/* ---------- Mobile drawer ---------- */
.drawer {
  position: fixed; inset: 0; z-index: 200; visibility: hidden; pointer-events: none;
}
.drawer__overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); opacity: 0; transition: opacity var(--t); }
.drawer__panel {
  position: absolute; top: 0; right: 0; height: 100%; width: min(320px, 80vw);
  background: var(--ink-soft); border-left: 1px solid var(--ink-line); padding: 1.5rem;
  transform: translateX(100%); transition: transform var(--t); display: flex; flex-direction: column;
}
.drawer.is-open { visibility: visible; pointer-events: auto; }
.drawer.is-open .drawer__overlay { opacity: 1; }
.drawer.is-open .drawer__panel { transform: translateX(0); }
.drawer__close { align-self: flex-end; width: 40px; height: 40px; border: 1px solid var(--ink-line); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 2rem; }
.drawer__nav { display: flex; flex-direction: column; gap: 1rem; }
.drawer__nav a { font-family: var(--font-display); font-size: 1.25rem; font-weight: 500; color: var(--bone-muted); }
.drawer__nav a:hover { color: var(--cognition); }
.drawer__cta { margin-top: auto; }

/* ---------- Responsivo ---------- */
@media (max-width: 992px) {
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .caps { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); gap: 2rem 1.5rem; }
  .process::before { display: none; }
  .acad { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 768px) {
  .nav, .header__cta .btn { display: none; }
  .menu-toggle { display: flex; }
  .section { padding-block: var(--pad-y-sm); }
  .caps { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .hero__meta { gap: 1.75rem; }
  .footer__top { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  [data-reveal] { opacity: 1; }
}