/* =============================================================================
   zapin.pro — Site Institucional
   Identidade: dark tech, minimalista. Tokens: --zp-* (../../shared/design-tokens.css)
   Estrutura: Reset · Base · Header · Hero · Seções · Sobre · Produtos · Stack ·
              Contato · Rodapé · WhatsApp · Animações · Responsivo
   ============================================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ---------- Base ---------- */
body {
  font-family: var(--zp-font-body);
  background: var(--zp-black);
  color: var(--zp-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--space-6); }

.mono { font-family: var(--zp-font-mono); }

.gradient-text {
  background: var(--zp-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* ---------- Botões ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--zp-font-display); font-weight: 500; font-size: 0.975rem;
  padding: 0.85rem 1.6rem; border-radius: var(--radius-full);
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
  white-space: nowrap;
}
.btn-primary { background: var(--zp-accent); color: #fff; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(123, 92, 240, 0.4); }
.btn-ghost { background: transparent; color: var(--zp-text); border: 1px solid var(--zp-border); }
.btn-ghost:hover { border-color: var(--zp-accent); color: #fff; }
.btn-block { width: 100%; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: var(--z-header);
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled { border-bottom-color: var(--zp-border); background: rgba(10, 10, 10, 0.9); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }

.logo { display: inline-flex; align-items: center; gap: var(--space-2); }
.logo-mark { display: inline-grid; place-items: center; }
.logo-text { font-family: var(--zp-font-display); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.02em; }
.logo-accent { color: var(--zp-accent2); }

.nav { display: flex; align-items: center; gap: var(--space-8); }
.nav a { font-size: 0.95rem; color: var(--zp-muted); transition: color var(--transition); }
.nav a:hover { color: var(--zp-text); }
.nav .nav-cta {
  color: var(--zp-text); border: 1px solid var(--zp-border);
  padding: 0.5rem 1.1rem; border-radius: var(--radius-full);
}
.nav .nav-cta:hover { border-color: var(--zp-accent); }

.nav-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.nav-toggle span { width: 24px; height: 2px; background: var(--zp-text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { position: relative; padding: clamp(4rem, 12vw, 9rem) 0 clamp(3rem, 8vw, 6rem); overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(123, 92, 240, 0.18), transparent 70%),
    radial-gradient(40% 40% at 85% 30%, rgba(0, 212, 170, 0.12), transparent 70%);
}
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--zp-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--zp-border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  opacity: 0.5;
}
.hero-inner { position: relative; z-index: 1; max-width: 860px; }

.eyebrow {
  display: inline-block; font-family: var(--zp-font-mono); font-size: 0.85rem;
  color: var(--zp-accent2); background: rgba(0, 212, 170, 0.08);
  border: 1px solid rgba(0, 212, 170, 0.2); padding: 0.35rem 0.9rem;
  border-radius: var(--radius-full); margin-bottom: var(--space-6);
}
.hero-title {
  font-family: var(--zp-font-display); font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.25rem); line-height: 1.05; letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}
.hero-sub { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--zp-muted); max-width: 620px; margin-bottom: var(--space-8); }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--space-4); margin-bottom: var(--space-16); }

.hero-stats { display: flex; flex-wrap: wrap; gap: var(--space-12); border-top: 1px solid var(--zp-border); padding-top: var(--space-8); }
.stat { display: flex; flex-direction: column; }
.stat strong { font-family: var(--zp-font-display); font-size: 1.6rem; }
.stat span { color: var(--zp-muted); font-size: 0.9rem; }

/* ---------- Seções ---------- */
.section { padding: clamp(4rem, 10vw, 7rem) 0; }
.section-alt { background: var(--zp-surface); border-block: 1px solid var(--zp-border); }
.section-head { max-width: 640px; margin-bottom: var(--space-16); }
.section-tag {
  display: inline-block; font-family: var(--zp-font-mono); font-size: 0.8rem;
  text-transform: uppercase; letter-spacing: 0.08em; color: var(--zp-accent);
  margin-bottom: var(--space-3);
}
.section-title { font-family: var(--zp-font-display); font-weight: 600; font-size: clamp(1.7rem, 4vw, 2.5rem); letter-spacing: -0.02em; line-height: 1.15; }
.section-lead { color: var(--zp-muted); margin-top: var(--space-4); font-size: 1.075rem; }

/* ---------- Sobre ---------- */
.about-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: var(--space-16); align-items: start; }
.about-content p { color: var(--zp-muted); margin-top: var(--space-4); }
.about-content strong { color: var(--zp-text); font-weight: 600; }
.about-content .section-title { margin-top: var(--space-3); }
.about-list { margin-top: var(--space-6); display: grid; gap: var(--space-3); }
.about-list li { position: relative; padding-left: 1.75rem; color: var(--zp-muted); }
.about-list li::before {
  content: ""; position: absolute; left: 0; top: 0.55em; width: 8px; height: 8px;
  border-radius: 50%; background: var(--zp-gradient);
}
.about-card {
  position: relative; border-radius: var(--radius-lg); padding: 1px; background: var(--zp-border);
}
.about-card-inner { background: var(--zp-surface); border-radius: calc(var(--radius-lg) - 1px); padding: var(--space-8); }
.about-card .mono { color: var(--zp-accent2); font-size: 0.85rem; }
.about-card dl { margin-top: var(--space-6); display: grid; gap: var(--space-4); }
.about-card dt { font-family: var(--zp-font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--zp-muted); }
.about-card dd { font-size: 0.975rem; margin-top: 2px; }

/* ---------- Produtos ---------- */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.product-card { position: relative; border-radius: var(--radius-lg); padding: 1px; background: var(--zp-border); transition: transform var(--transition); overflow: hidden; }
/* Assinatura visual: borda animada em gradiente roxo→teal */
.product-card::before {
  content: ""; position: absolute; inset: -40%; z-index: 0;
  background: conic-gradient(from 0deg, transparent 0%, var(--zp-accent) 25%, var(--zp-accent2) 50%, transparent 65%);
  opacity: 0; transition: opacity var(--transition);
  animation: spin 5s linear infinite;
}
.product-card:hover { transform: translateY(-4px); }
.product-card:hover::before { opacity: 1; }
.product-card-body {
  position: relative; z-index: 1; height: 100%;
  background: var(--zp-surface); border-radius: calc(var(--radius-lg) - 1px);
  padding: var(--space-8); display: flex; flex-direction: column;
}
.product-card h3 { font-family: var(--zp-font-display); font-weight: 600; font-size: 1.35rem; margin-bottom: var(--space-3); }
.product-card p { color: var(--zp-muted); font-size: 0.95rem; flex: 1; }
.product-link { margin-top: var(--space-6); font-family: var(--zp-font-mono); font-size: 0.85rem; color: var(--zp-accent2); transition: gap var(--transition); }
.badge {
  align-self: flex-start; font-family: var(--zp-font-mono); font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.06em; color: var(--zp-accent); background: rgba(123, 92, 240, 0.1);
  border: 1px solid rgba(123, 92, 240, 0.25); padding: 0.2rem 0.6rem; border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ---------- Stack ---------- */
.stack-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
.stack-item {
  display: flex; flex-direction: column; gap: 2px;
  background: var(--zp-black); border: 1px solid var(--zp-border);
  border-radius: var(--radius-md); padding: var(--space-6);
  transition: border-color var(--transition), transform var(--transition);
}
.stack-item:hover { border-color: var(--zp-accent); transform: translateY(-2px); }
.stack-item .mono { font-size: 1.05rem; font-weight: 500; }
.stack-item small { color: var(--zp-muted); font-size: 0.85rem; }

/* ---------- Contato ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: start; }
.contact-channels { display: grid; gap: var(--space-4); margin-top: var(--space-8); }
.contact-channel {
  display: flex; align-items: center; gap: var(--space-4);
  background: var(--zp-surface); border: 1px solid var(--zp-border);
  border-radius: var(--radius-md); padding: var(--space-4) var(--space-6);
  transition: border-color var(--transition);
}
.contact-channel:hover { border-color: var(--zp-accent); }
.contact-channel-icon {
  display: grid; place-items: center; width: 42px; height: 42px; flex-shrink: 0;
  border-radius: var(--radius-md); background: var(--zp-black); border: 1px solid var(--zp-border);
  font-family: var(--zp-font-display); font-weight: 700; color: var(--zp-accent2);
}
.contact-channel span span, .contact-channel > span { display: flex; flex-direction: column; }
.contact-channel small { color: var(--zp-muted); font-size: 0.85rem; }

.contact-form { background: var(--zp-surface); border: 1px solid var(--zp-border); border-radius: var(--radius-lg); padding: var(--space-8); display: grid; gap: var(--space-4); }
.field { display: grid; gap: var(--space-2); }
.field label { font-size: 0.85rem; color: var(--zp-muted); font-weight: 500; }
.field input, .field select, .field textarea {
  font: inherit; color: var(--zp-text);
  background: var(--zp-black); border: 1px solid var(--zp-border);
  border-radius: var(--radius-sm); padding: 0.75rem 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--zp-accent); box-shadow: 0 0 0 3px rgba(123, 92, 240, 0.15);
}
.field textarea { resize: vertical; min-height: 110px; }
.field select { appearance: none; }
.form-note { font-size: 0.8rem; color: var(--zp-muted); text-align: center; margin-top: var(--space-2); }
.form-status { font-size: 0.9rem; text-align: center; margin-top: var(--space-2); font-weight: 500; }
.form-status.is-ok { color: var(--zp-accent2); }
.form-status.is-error { color: #FF5E7A; }

/* ---------- Rodapé ---------- */
.site-footer { background: var(--zp-surface); border-top: 1px solid var(--zp-border); padding-top: var(--space-16); }
.footer-inner { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: var(--space-12); padding-bottom: var(--space-12); }
.footer-brand p { color: var(--zp-muted); margin-top: var(--space-3); max-width: 280px; }
.footer-nav h4 { font-family: var(--zp-font-display); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--zp-muted); margin-bottom: var(--space-4); }
.footer-nav a { display: block; color: var(--zp-text); padding: var(--space-1) 0; transition: color var(--transition); }
.footer-nav a:hover { color: var(--zp-accent2); }
.footer-bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-4); padding: var(--space-6) 0; border-top: 1px solid var(--zp-border); color: var(--zp-muted); font-size: 0.85rem; }

/* ---------- WhatsApp flutuante ---------- */
.whatsapp-float {
  position: fixed; right: 22px; bottom: 22px; z-index: var(--z-float);
  width: 56px; height: 56px; display: grid; place-items: center;
  border-radius: 50%; background: #25D366; color: #fff;
  box-shadow: 0 10px 30px rgba(37, 211, 102, 0.4);
  transition: transform var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); }

/* ---------- Animações ---------- */
@keyframes spin { to { transform: rotate(360deg); } }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .product-card::before { animation: none; }
}

/* ---------- Responsivo ---------- */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav {
    position: fixed; inset: 72px 0 auto 0; flex-direction: column; align-items: stretch;
    gap: 0; background: var(--zp-black); border-bottom: 1px solid var(--zp-border);
    padding: var(--space-4) var(--space-6); transform: translateY(-150%);
    transition: transform var(--transition); z-index: var(--z-header);
  }
  .nav.open { transform: translateY(0); }
  .nav a { padding: var(--space-4) 0; border-bottom: 1px solid var(--zp-border); }
  .nav .nav-cta { text-align: center; margin-top: var(--space-3); border-color: var(--zp-accent); }
  .nav-toggle { display: flex; }

  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .products-grid, .stack-grid { grid-template-columns: 1fr; }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: var(--space-8); }
}
@media (max-width: 480px) {
  .stack-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: var(--space-8); }
  .hero-actions .btn { flex: 1; }
}