:root {
  --blue-primary: #2563eb;
  --blue-dark: #1e40af;
  --blue-light: #eff6ff;
  --gray-900: #0f172a;
  --gray-600: #475569;
  --gray-100: #f8fafc;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background: linear-gradient(180deg, #ffffff 0%, var(--blue-light) 100%);
  color: var(--gray-900);
}

/* ---------- HEADER ---------- */
header {
  padding: 32px 5%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header img {
  width: 140px;
}

header a {
  text-decoration: none;
  color: var(--blue-primary);
  font-weight: 500;
}

/* ---------- HERO ---------- */
.hero {
  padding: 80px 5%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero h1 span {
  color: var(--blue-primary);
}

.hero p {
  font-size: 1.1rem;
  color: var(--gray-600);
  margin-bottom: 32px;
  max-width: 520px;
}

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

.btn-primary {
  background: var(--blue-primary);
  color: #fff;
  padding: 14px 28px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s;
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-secondary {
  border: 2px solid var(--blue-primary);
  color: var(--blue-primary);
  padding: 12px 26px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
}

.hero-visual {
  background: #ffffff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.hero-visual ul {
  list-style: none;
  display: grid;
  gap: 20px;
}

.hero-visual li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.hero-visual i {
  color: var(--blue-primary);
  font-size: 1.3rem;
}

/* ---------- FEATURES ---------- */
.features {
  padding: 80px 5%;
  background: #ffffff;
}

.features h2 {
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 48px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.feature {
  padding: 32px;
  border-radius: 16px;
  background: var(--gray-100);
}

.feature i {
  font-size: 2rem;
  color: var(--blue-primary);
  margin-bottom: 16px;
  display: block;
}

.feature h3 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.feature p {
  color: var(--gray-600);
  font-size: 0.95rem;
}

/* ---------- FOOTER ---------- */
footer {
  padding: 32px;
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray-600);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
    padding: 48px 5%;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
    flex-direction: column;
    /* empilha os botões */
    align-items: center;
    /* centraliza */
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    /* ocupa a largura toda */
    max-width: 320px;
    /* mas não passa de 320px */
    text-align: center;
  }

  .hero h1 {
    font-size: 2rem;
    /* reduz o título no mobile */
  }
}

@media (max-width: 600px) {

  /* botões empilhados e sem quebra de texto */
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    max-width: 100%;
    text-align: center;
    display: block;
    white-space: nowrap;
    /* evita quebra do texto do botão */
    padding: 14px 16px;
    font-size: 0.95rem;
  }

  .btn-secondary {
    background: transparent;
    cursor: pointer;
    font-size: 0.95rem;
  }

  /* lista do hero-visual sem quebra de linha nos itens */
  .hero-visual {
    padding: 24px 16px;
  }

  .hero-visual li {
    font-size: 0.9rem;
    text-align: left;
    /* garante alinhamento à esquerda */
    gap: 10px;
  }

  .hero-visual i {
    flex-shrink: 0;
    /* ícone não encolhe junto com o texto */
  }
}