/* ============================================================
   BASE — TCC com Roberta (estilos globais, tipografia, grid)
   ============================================================ */

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-bg);
}

/* ========== TIPOGRAFIA ========== */

h1, h2, h3 {
  font-family: var(--font-heading);
  color: var(--color-text-primary);
}

h1 {
  font-weight: 700;
  font-size: 56px;
  line-height: 1.1;
}

h2 {
  font-weight: 600;
  font-size: 40px;
  line-height: 1.2;
}

h3 {
  font-weight: 600;
  font-size: 20px;
  line-height: 1.3;
}

.section-subtitle {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.body-large {
  font-size: 18px;
  line-height: 1.6;
}

.text-small {
  font-size: 13px;
  line-height: 1.5;
}

/* ========== CONTAINERS ========== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--padding-section-x);
  padding-right: var(--padding-section-x);
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
  padding-left: var(--padding-section-x);
  padding-right: var(--padding-section-x);
}

/* ========== SEÇÕES ========== */

.section {
  padding-top: var(--padding-section-y);
  padding-bottom: var(--padding-section-y);
}

.section-bg {
  background-color: var(--color-bg);
}

.section-card {
  background-color: var(--color-card);
}

.section-dark {
  background-color: var(--color-primary);
  color: #ffffff;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header .section-subtitle {
  margin-top: var(--space-sm);
}

/* ========== GRID ========== */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
}

/* ========== UTILITÁRIOS ========== */

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========== RESPONSIVO ========== */

@media (max-width: 1024px) {
  :root {
    --padding-section-x: 80px;
  }

  h1 {
    font-size: 44px;
  }

  h2 {
    font-size: 34px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --padding-section-x: 24px;
    --padding-section-y: 60px;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 28px;
  }

  h3 {
    font-size: 18px;
  }

  .section-subtitle {
    font-size: 14px;
  }

  .body-large {
    font-size: 16px;
  }

  .grid-2 {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .grid-3 {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .grid-5 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .grid-5 {
    grid-template-columns: 1fr;
  }
}