:root {
  --turquesa-escuro: #006764;
  --turquesa-profundo: #003c3b;
  --turquesa-medio: #0b7a77;
  --turquesa-claro: #dff3f0;
  --branco: #ffffff;
  --cinza-texto: #244241;
  --sombra: 0 18px 40px rgba(0, 60, 59, 0.12);
  --raio: 22px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Montserrat", Arial, sans-serif;
  background: var(--turquesa-claro);
  color: var(--turquesa-profundo);
  line-height: 1.6;
}

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

.container {
  width: min(1120px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: linear-gradient(135deg, var(--turquesa-profundo), var(--turquesa-escuro));
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.16);
}

.navbar {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.logo {
  color: var(--branco);
  text-decoration: none;
  text-transform: uppercase;
  line-height: 0.95;
  letter-spacing: 0.02em;
}

.logo span {
  display: block;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 900;
}

.logo small {
  display: block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  color: var(--branco);
  font-weight: 700;
  text-decoration: none;
  position: relative;
}

.main-nav a::after {
  content: "";
  width: 0;
  height: 3px;
  background: var(--branco);
  position: absolute;
  left: 0;
  bottom: -8px;
  transition: width 0.25s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  color: var(--branco);
  font-size: 2rem;
  cursor: pointer;
}

.hero {
  min-height: calc(100vh - 86px);
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(223, 243, 240, 0.96), rgba(223, 243, 240, 0.88), rgba(223, 243, 240, 0.72)),
    url("../assets/img/fundo-professor-da-esquina.jpg");
  background-size: cover;
  background-position: center right;
  padding: 92px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 680px) 1fr;
  align-items: center;
}

.eyebrow {
  color: var(--turquesa-medio);
  text-transform: uppercase;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(3.4rem, 9vw, 7rem);
  line-height: 0.9;
  font-weight: 900;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero-subtitle {
  max-width: 620px;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: var(--cinza-texto);
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border-radius: 12px;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--turquesa-escuro);
  color: var(--branco);
}

.btn-primary:hover {
  background: var(--turquesa-profundo);
}

.btn-secondary {
  color: var(--turquesa-profundo);
  border: 2px solid var(--turquesa-profundo);
}

.btn-secondary:hover {
  background: var(--turquesa-profundo);
  color: var(--branco);
}

.section {
  padding: 84px 0;
}

.section-heading {
  max-width: 780px;
  text-align: center;
  margin: 0 auto 44px;
}

.section-heading span,
.section-label {
  display: inline-block;
  color: var(--turquesa-medio);
  text-transform: uppercase;
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  margin-bottom: 10px;
}

.section-heading h2,
.about-box h2,
.contact-box h2 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.08;
  margin-bottom: 16px;
}

.section-heading p,
.about-box p,
.contact-box p {
  color: var(--cinza-texto);
  font-size: 1.05rem;
}

.cards {
  display: grid;
  gap: 28px;
}

.two-columns {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.three-columns {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card,
.post-card,
.about-box,
.contact-box {
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(0, 103, 100, 0.18);
  box-shadow: var(--sombra);
  border-radius: var(--raio);
}

.card {
  padding: 34px;
}

.card-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--turquesa-escuro), var(--turquesa-profundo));
  color: var(--branco);
  display: grid;
  place-items: center;
  font-size: 2rem;
  font-weight: 900;
  margin-bottom: 24px;
}

.card h3 {
  color: var(--turquesa-escuro);
  font-size: 1.7rem;
  text-transform: uppercase;
  margin-bottom: 2px;
}

.card-subtitle {
  font-weight: 800;
  color: var(--turquesa-profundo);
  margin-bottom: 22px;
}

.card ul {
  padding-left: 20px;
}

.card li {
  margin-bottom: 9px;
}

.benefits-section {
  background: linear-gradient(135deg, var(--turquesa-profundo), var(--turquesa-escuro));
  color: var(--branco);
}

.benefits {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.benefits article {
  border-left: 1px solid rgba(255, 255, 255, 0.35);
  padding-left: 22px;
}

.benefits strong {
  display: block;
  font-size: 1.15rem;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.benefits p {
  color: rgba(255, 255, 255, 0.88);
}

.about-box,
.contact-box {
  padding: 42px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 36px;
  align-items: center;
}

.post-card {
  padding: 28px;
}

.post-card h3 {
  color: var(--turquesa-escuro);
  margin-bottom: 10px;
}

.contact-section {
  background: rgba(255, 255, 255, 0.36);
}

.contact-list {
  display: grid;
  gap: 12px;
}

.site-footer {
  background: var(--turquesa-profundo);
  color: var(--branco);
  padding: 30px 0;
}

.footer-content {
  display: grid;
  gap: 12px;
}

.legal-note {
  max-width: 900px;
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 860px) {
  .menu-toggle {
    display: block;
  }

  .navbar {
    min-height: 76px;
  }

  .main-nav {
    display: none;
    width: 100%;
  }

  .main-nav.is-open {
    display: block;
  }

  .navbar {
    flex-wrap: wrap;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding: 0 0 22px;
  }

  .hero {
    min-height: auto;
    padding: 72px 0;
    background-position: center;
  }

  .hero-grid,
  .two-columns,
  .three-columns,
  .benefits,
  .about-box,
  .contact-box {
    grid-template-columns: 1fr;
  }

  .benefits article {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.35);
    padding-left: 0;
    padding-top: 20px;
  }
}