/* Doc: STACKONE_LANDING_UI_HEADER_BRANDING + V3 */

:root {
  --color-bg: #0E1117;
  --color-bg-alt: #171E28;
  --color-text: #FFFFFF;
  --color-text-secondary: #B0B7C3;
  --color-text-muted: #8A93A3;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header fixo (sticky) */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  min-height: 72px;
  padding: 12px 0;
  background: rgba(14, 17, 23, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.header-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  height: 48px;
  width: auto;
  display: block;
}

@media (min-width: 600px) {
  .logo-img {
    height: 64px;
  }
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.header-nav .btn {
  white-space: nowrap;
}

.btn-header {
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 600px) {
  .header-nav .btn-header {
    padding: 7px 12px;
    font-size: 11px;
  }

  .header-nav {
    gap: 6px;
  }
}

/* 1. Hero - fundo principal */
.hero {
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 100px 0 0;
  background: var(--color-bg);
}

.hero-logo {
  height: 40px;
  width: auto;
  margin-bottom: 24px;
  opacity: 0.95;
}

.hero-content {
  padding: 80px 0;
}

.hero-content h1 {
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 20px 0;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.hero .subheadline {
  font-size: clamp(16px, 2.2vw, 19px);
  color: var(--color-text-secondary);
  max-width: 540px;
  margin: 0 auto 36px;
  line-height: 1.5;
}

.btn {
  display: inline-block;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  transition: background 0.2s, box-shadow 0.2s;
  font-family: inherit;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: white;
  box-shadow: 0 4px 14px rgba(59, 130, 246, 0.35);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent) !important;
  border: 2px solid var(--color-accent);
}

.btn-secondary:visited {
  color: var(--color-accent) !important;
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.1);
  box-shadow: none;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
}

/* Sections - ritmo alternado */
.section {
  padding: 80px 24px;
}

/* 2. O Caos - fundo alternado */
.section-caos {
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section-caos h2 {
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 600;
  margin: 0 0 24px 0;
  text-align: center;
  color: var(--color-text);
}

.caos-lista {
  list-style: none;
  padding: 0;
  margin: 0 0 28px 0;
}

.caos-lista li {
  padding: 12px 0;
  padding-left: 28px;
  position: relative;
  font-size: 17px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-align: left;
}

.caos-lista li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.caos-fechamento {
  font-size: clamp(18px, 2.5vw, 22px);
  text-align: center;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

.caos-fechamento strong {
  color: var(--color-text);
  font-weight: 600;
}

/* 3. A Solução - fundo principal */
.section-solucao {
  background: var(--color-bg);
}

.section-solucao h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  margin: 0 0 16px 0;
  color: var(--color-text);
}

.solucao-intro {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin: 0 0 16px 0;
}

.solucao-destaque {
  font-size: 18px;
  font-weight: 500;
  margin: 0;
  color: var(--color-text);
}

/* 4. Benefícios - fundo alternado */
.section-beneficios {
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section-beneficios .container {
  max-width: 900px;
}

.beneficios-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}

.beneficio-card {
  padding: 28px;
  background: rgba(14, 17, 23, 0.6);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

.beneficio-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 8px 0;
  color: var(--color-text);
}

.beneficio-card p {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* 5. Para Quem É - fundo principal */
.section-publico {
  background: var(--color-bg);
}

.section-publico h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  margin: 0 0 24px 0;
  color: var(--color-text);
}

.publico-lista {
  list-style: none;
  padding: 0;
  margin: 0 0 32px 0;
}

.publico-lista li {
  padding: 12px 0;
  font-size: 18px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  text-align: left;
}

.publico-lista li:last-child {
  border-bottom: none;
}

.publico-diferencial {
  font-size: 18px;
  color: var(--color-text-secondary);
  font-style: italic;
  margin: 0;
}

/* 6. Posicionamento - fundo alternado */
.section-modular {
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section-modular h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  margin: 0 0 16px 0;
  color: var(--color-text);
}

.section-modular p {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin: 0;
  line-height: 1.6;
}

/* 6.1 Expansão e Outros Verticais (Doc: STACKONE_LANDING_SECTION_VERTICAIS) */
.section-verticals {
  background: var(--color-bg);
}

.section-verticals .container {
  max-width: 900px;
}

.section-verticals h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  margin: 0 0 16px 0;
  color: var(--color-text);
}

.verticals-intro {
  font-size: 17px;
  color: var(--color-text-secondary);
  margin: 0 0 12px 0;
  line-height: 1.6;
}

.verticals-intro:last-of-type {
  margin-bottom: 32px;
}

.verticals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.vertical-card {
  padding: 24px;
  background: var(--color-bg-alt);
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.05);
  position: relative;
}

.vertical-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin: 0 0 8px 0;
  color: var(--color-text);
}

.vertical-card p {
  font-size: 14px;
  color: var(--color-text-muted);
  margin: 0 0 12px 0;
  line-height: 1.5;
}

.vertical-status {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 6px;
}

.status-ativo {
  background: rgba(34, 197, 94, 0.15);
  color: #22c55e;
}

.status-evolucao {
  background: rgba(234, 179, 8, 0.15);
  color: #eab308;
}

.status-planejado {
  background: rgba(255,255,255,0.06);
  color: var(--color-text-muted);
}

/* 7. Demonstrar Interesse */
.section-interesse {
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.04);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}

.section-interesse h2 {
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 600;
  margin: 0 0 12px 0;
  text-align: center;
  color: var(--color-text);
}

.interesse-intro {
  font-size: 17px;
  color: var(--color-text-secondary);
  text-align: center;
  margin: 0 0 32px 0;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.form-interesse {
  max-width: 560px;
  margin: 0 auto;
}

.form-grid-interesse {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 600px) {
  .form-grid-interesse {
    grid-template-columns: 1fr;
  }
}

.form-interesse .form-group {
  margin-bottom: 20px;
}

.form-interesse .form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.form-interesse input[type="text"],
.form-interesse input[type="email"],
.form-interesse input[type="tel"] {
  width: 100%;
  padding: 12px 16px;
  font-size: 16px;
  font-family: inherit;
  color: var(--color-text);
  background: rgba(14, 17, 23, 0.6);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 8px;
  transition: border-color 0.2s;
}

.form-interesse input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-interesse input::placeholder {
  color: var(--color-text-muted);
}

.form-error {
  display: block;
  font-size: 13px;
  color: #ef4444;
  margin-top: 4px;
}

.form-phone-help {
  display: block;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-top: 6px;
  line-height: 1.4;
}

.form-group-checkbox {
  margin-top: 8px;
  margin-bottom: 24px;
}

.form-interesse .checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.form-interesse .checkbox-label input {
  margin-top: 4px;
  flex-shrink: 0;
}

.form-interesse .link-politica {
  color: var(--color-accent);
  text-decoration: none;
}

.form-interesse .link-politica:hover {
  text-decoration: underline;
}

.form-actions {
  text-align: center;
}

.form-actions .btn {
  min-width: 200px;
}

.mensagem-sucesso {
  color: #22c55e;
  font-size: 16px;
  font-weight: 500;
  margin: 16px 0 0 0;
}

.mensagem-erro {
  color: #ef4444;
  font-size: 14px;
  margin: 16px 0 0 0;
}

.section-politica {
  padding: 48px 24px;
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.04);
}

.container-narrow {
  max-width: 700px;
}

.politica-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 16px 0;
  color: var(--color-text);
}

.politica-texto {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* 8. Chamada Final - fundo principal */
.section-cta {
  background: var(--color-bg);
  text-align: center;
}

.section-cta h2 {
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 700;
  margin: 0 0 32px 0;
  color: var(--color-text);
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.cta-aviso {
  font-size: 14px;
  color: var(--color-text-muted);
  font-style: italic;
  margin: 0;
}

/* 8. Footer */
.footer {
  padding: 48px 24px;
  background: var(--color-bg-alt);
  border-top: 1px solid rgba(255,255,255,0.08);
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-brand .logo {
  font-size: 20px;
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
  color: var(--color-text);
}

.footer-brand p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
}

.footer-credits {
  margin-top: 12px !important;
  font-size: 13px !important;
}

.footer-synapto {
  color: var(--color-accent);
  text-decoration: none;
}

.footer-synapto:hover {
  text-decoration: underline;
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 600;
}

.footer-link:hover {
  text-decoration: underline;
}