/* ==========================================================================
   Layout — header, main, grids de cada seção
   ========================================================================== */

.page {
  display: flex;
  flex-direction: column;

  min-height: 100%;
}

.main {
  flex: 1;
}

.section {
  width: 100%;

  margin-inline: auto;
  max-width: 72rem;
  padding-inline: 1.5rem;

  @media (min-width: 48rem) {
    padding-inline: 2rem;
  }
}

/* ---------- Header / nav ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;

  padding: 1rem 1rem 0;

  @media (min-width: 48rem) {
    padding-inline: 1.5rem;
  }
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;

  margin-inline: auto;
  max-width: 72rem;
  height: 4rem;
  padding: 0 0.75rem 0 1rem;
  border-radius: 999px;

  border: 1px solid var(--color-border);
  background: #fff;
  box-shadow: var(--shadow-surface);

  @media (min-width: 48rem) {
    padding-left: 1.5rem;
  }

  .nav__logo {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    gap: 0.5rem;

    border-radius: 999px;
    outline-offset: 4px;

    &:focus-visible {
      outline: 2px solid var(--color-accent);
    }
  }

  .nav__logo-text {
    font-size: 1.125rem;
    font-weight: 600;
  }

  .nav__links {
    display: none;
    align-items: center;

    margin-inline: auto;
    gap: 0.25rem;

    @media (min-width: 64rem) {
      display: flex;
    }
  }

  .nav__actions {
    display: flex;
    flex-shrink: 0;
    align-items: center;

    margin-left: auto;
    gap: 0.25rem;

    @media (min-width: 40rem) {
      gap: 0.5rem;
    }

    @media (min-width: 64rem) {
      margin-left: 0;
    }
  }

  .nav__cta-full {
    display: none;

    @media (min-width: 40rem) {
      display: inline;
    }
  }

  .nav__cta-short {
    display: inline;

    @media (min-width: 40rem) {
      display: none;
    }
  }
}

/* .nav__logo-mark é reaproveitada fora do .nav (no rodapé), então fica solta */
.nav__logo-mark {
  width: 2rem;
  height: 2rem;
}

/* ---------- Hero ---------- */

.hero {
  scroll-margin-top: 7rem;
  padding-block: 3rem 4rem;

  @media (min-width: 64rem) {
    padding-block: 6rem;
  }

  .hero__grid {
    display: grid;
    align-items: center;
    gap: 3rem;

    @media (min-width: 64rem) {
      grid-template-columns: 1.05fr 1fr;
      gap: 2rem;
    }
  }

  .hero__content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }

  .hero__title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.02em;

    @media (min-width: 48rem) {
      font-size: 3rem;
    }
  }

  .hero__lead {
    max-width: 46ch;

    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--color-muted);
  }

  .hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
  }

  .hero__folders {
    display: grid;
    gap: 1rem;

    @media (min-width: 40rem) {
      grid-template-columns: 1fr 1fr;
    }

    @media (min-width: 48rem) {
      gap: 1.25rem;
    }
  }

  .hero__folder-col {
    display: flex;
    flex-direction: column;
    gap: 1rem;

    @media (min-width: 48rem) {
      gap: 1.25rem;
    }

    &.hero__folder-col--offset {
      display: none;

      @media (min-width: 40rem) {
        display: flex;
        transform: translateY(2rem);
      }

      @media (min-width: 48rem) {
        transform: translateY(3rem);
      }
    }

    .hero__folder-secondary {
      display: none;

      @media (min-width: 64rem) {
        display: block;
      }
    }
  }
}

/* ---------- How it works ---------- */

.how-it-works {
  scroll-margin-top: 7rem;
  padding-block: 2rem;

  @media (min-width: 64rem) {
    padding-block: 3rem;
  }

  .how-it-works__grid {
    display: grid;
    gap: 2.5rem;

    @media (min-width: 64rem) {
      grid-template-columns: minmax(0, 21rem) 1fr;
      gap: 5rem;
    }
  }

  .how-it-works__intro {
    max-width: 42ch;

    @media (min-width: 64rem) {
      position: sticky;
      top: 7rem;
      align-self: start;

      max-width: none;
    }

    h2 {
      font-size: 1.875rem;
      letter-spacing: -0.01em;

      @media (min-width: 48rem) {
        font-size: 2.25rem;
      }
    }

    p {
      margin-top: 1rem;

      max-width: 42ch;
      line-height: 1.6;
      color: var(--color-muted);
    }
  }
}

/* ---------- Section header (Modos / Acompanhamento) ---------- */

.section-header {
  max-width: 42rem;

  h2 {
    font-size: 1.875rem;
    letter-spacing: -0.01em;

    @media (min-width: 48rem) {
      font-size: 2.25rem;
    }
  }

  p {
    margin-top: 1rem;

    line-height: 1.6;
    color: var(--color-muted);
  }
}

.study-modes,
.session,
.progress {
  scroll-margin-top: 7rem;
  padding-block: 2rem;

  @media (min-width: 64rem) {
    padding-block: 3rem;
  }
}

.study-modes__grid {
  display: grid;

  margin-top: 2.5rem;
  gap: 1rem;

  @media (min-width: 64rem) {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

.progress__grid {
  display: grid;

  margin-top: 2.5rem;
  gap: 1rem;

  @media (min-width: 64rem) {
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
  }
}

/* ---------- Sessao ---------- */

.session__grid {
  display: grid;

  margin-top: 2.5rem;
  gap: 1rem;

  @media (min-width: 64rem) {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.25rem;
  }
}

.session__column {
  display: flex;
  flex-direction: column;
  gap: 1rem;

  @media (min-width: 64rem) {
    grid-column: span 5;
    gap: 1.25rem;
  }
}

/* ---------- Final CTA ---------- */

.final-cta {
  padding-bottom: 4rem;

  @media (min-width: 64rem) {
    padding-bottom: 6rem;
  }
}

/* ---------- Team ---------- */

.team {
  scroll-margin-top: 7rem;
  padding-block: 2rem 4rem;

  @media (min-width: 64rem) {
    padding-block: 3rem 6rem;
  }
}

.team__grid {
  display: grid;

  margin-top: 2.5rem;
  gap: 1rem;

  @media (min-width: 40rem) {
    grid-template-columns: repeat(2, 1fr);
  }

  @media (min-width: 64rem) {
    grid-template-columns: repeat(5, 1fr);
    gap: 1.25rem;
  }
}

/* ---------- Footer ---------- */

.site-footer {
  padding-bottom: 2.5rem;

  .site-footer__inner {
    display: flex;
    flex-direction: column;

    gap: 1.5rem;
    padding-top: 2rem;

    border-top: 1px solid var(--color-border);

    @media (min-width: 48rem) {
      flex-direction: row;
      align-items: center;
      justify-content: space-between;
    }
  }

  .site-footer__brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;

    p {
      font-size: 0.875rem;
      color: var(--color-muted);
    }

    strong {
      font-weight: 600;
      color: var(--color-foreground);
    }
  }

  .site-footer__nav {
    ul {
      display: flex;
      flex-wrap: wrap;

      column-gap: 1.5rem;
      row-gap: 0.5rem;

      font-size: 0.875rem;
    }

    a {
      border-radius: 2px;

      color: var(--color-muted);
      text-underline-offset: 4px;

      &:hover {
        text-decoration: underline;
      }

      &:focus-visible {
        outline: 2px solid var(--color-accent);
      }
    }
  }

  .site-footer__copyright {
    margin-top: 2rem;

    font-size: 0.75rem;
    color: var(--color-muted);
  }
}