:root {
  --green: #10B981;
  --green-dark: #0ea472;
  --slate: #0F172A;
  --slate-soft: #16213a;
  --slate-card: #1b2947;
  --text: #E7ECF6;
  --text-muted: #9AA6C1;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 14px;
  --max-width: 1140px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--slate);
  color: var(--text);
  line-height: 1.5;
}

img, svg { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 0.5em; font-weight: 700; }

h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); text-align: center; }

p { margin: 0 0 1em; color: var(--text-muted); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn {
  display: inline-block;
  border-radius: 999px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--green);
  color: #06251a;
}
.btn-primary:hover { background: var(--green-dark); }

.btn-outline {
  background: transparent;
  border-color: var(--green);
  color: var(--green);
}
.btn-outline:hover { background: rgba(16, 185, 129, 0.1); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--green); }

.btn-sm { padding: 8px 18px; font-size: 0.9rem; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }
.btn-block { display: block; width: 100%; padding: 12px 18px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 16px 20px;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.3rem;
  font-weight: 800;
  margin-right: auto;
}
.logo span { color: var(--green); }
.logo-icon { width: auto; height: 26px; }
.logo-full { width: auto; height: 30px; }

.nav-desktop {
  display: flex;
  gap: 24px;
}
.nav-desktop a { color: var(--text-muted); font-weight: 500; }
.nav-desktop a:hover { color: var(--text); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.menu-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  display: block;
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 8px 20px 20px;
  border-top: 1px solid var(--border);
}
.nav-mobile a {
  padding: 12px 0;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.nav-mobile.open { display: flex; }

/* Hero */
.hero {
  padding: 90px 0 60px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.18), transparent 60%);
}
.eyebrow {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(16, 185, 129, 0.12);
  color: var(--green);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.4rem);
  max-width: 800px;
  margin: 0 auto 20px;
}
.hero-sub {
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 1.1rem;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.hero-note { font-size: 0.85rem; color: var(--text-muted); }

/* Diferencial */
.diferencial { padding: 40px 0 80px; }
.diferencial-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 760px;
  margin: 0 auto;
}
.diferencial-card {
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--border);
}
.diferencial-card--muted { background: var(--slate-soft); opacity: 0.75; }
.diferencial-card--highlight {
  background: linear-gradient(160deg, rgba(16,185,129,0.15), var(--slate-card));
  border-color: rgba(16, 185, 129, 0.4);
}
.diferencial-card h3 { margin-bottom: 10px; }
.diferencial-tag {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  margin: 0;
}
.diferencial-tag--highlight { color: var(--green); }

/* Feature cards */
.funcionalidades { padding: 60px 0; }
.funcionalidades h2 { margin-bottom: 40px; }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--slate-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.feature-icon { font-size: 1.8rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.feature-card p { margin: 0; font-size: 0.95rem; }

/* Canais */
.canais { padding: 40px 0 70px; }
.canais h2 { margin-bottom: 30px; }
.canais-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.canal-chip {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--slate-card);
  border: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.95rem;
}

/* Planos */
.planos { padding: 70px 0; background: var(--slate-soft); }
.planos-sub { text-align: center; max-width: 480px; margin: 0 auto 40px; }
.planos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}
.plano-card {
  position: relative;
  background: var(--slate-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
  display: flex;
  flex-direction: column;
}
.plano-card--featured {
  border-color: var(--green);
  background: linear-gradient(160deg, rgba(16,185,129,0.12), var(--slate-card));
  transform: scale(1.03);
}
.plano-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--green);
  color: #06251a;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  white-space: nowrap;
}
.plano-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.plano-preco { font-size: 1.7rem; font-weight: 800; color: var(--text); margin-bottom: 2px; }
.plano-preco span { font-size: 0.85rem; font-weight: 500; color: var(--text-muted); }
.plano-creditos { font-size: 0.85rem; color: var(--green); font-weight: 600; margin-bottom: 6px; }
.plano-desc { font-size: 0.88rem; flex-grow: 1; }
.planos-footnote {
  text-align: center;
  margin-top: 36px;
  font-size: 0.85rem;
}

/* FAQ */
.faq { padding: 70px 0; }
.faq h2 { margin-bottom: 30px; }
.faq-list {
  max-width: 700px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--green);
  font-size: 1.2rem;
}
.faq-item[open] summary::after { content: "−"; }
.faq-item p { margin-top: 12px; margin-bottom: 0; }

/* CTA final */
.cta-final {
  padding: 70px 0 90px;
  text-align: center;
  background: radial-gradient(circle at 50% 100%, rgba(16, 185, 129, 0.16), transparent 60%);
}
.cta-final h2 { margin-bottom: 28px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding-top: 40px;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding-bottom: 24px;
}
.footer-copy { font-size: 0.9rem; max-width: 320px; }
.footer-links {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--green); }
.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  padding: 20px 0;
  border-top: 1px solid var(--border);
}

/* Responsive */
@media (max-width: 860px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: flex; }
  .cards-grid { grid-template-columns: 1fr; }
  .diferencial-grid { grid-template-columns: 1fr; }
  .plano-card--featured { transform: none; }
  .header-inner .btn-sm { display: none; }
}