/* ==========================================================================
   RESPONSIVIDADE — Mobile First
   Breakpoints: 480px (phablet), 768px (tablet), 1024px (desktop), 1440px (ultra-wide)
   ========================================================================== */

/* --------------------------------------------------------------------------
   BASE MOBILE (< 768px) — menu hambúrguer
   -------------------------------------------------------------------------- */
.main-nav { position: relative; }
.nav-toggle { display: flex; }

.nav-list {
  position: fixed;
  top: var(--header-height);
  left: 0; right: 0;
  flex-direction: column;
  align-items: stretch;
  background: rgba(5,7,10,0.98);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  padding: var(--space-md);
  gap: 0;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}
.nav-list.is-open { max-height: 80vh; overflow-y: auto; }
.nav-list li { border-bottom: 1px solid var(--border-subtle); }
.nav-list li:last-child { border-bottom: none; }
.nav-list a { display: block; padding: 0.9rem 0.2rem; }

.nav-cta { display: none; }

/* --------------------------------------------------------------------------
   480px+ — smartphones grandes
   -------------------------------------------------------------------------- */
@media (min-width: 480px) {
  .hero-stats { gap: var(--space-md); }
  .type-toggle label { font-size: 0.95rem; }
}

/* --------------------------------------------------------------------------
   768px+ — tablets: menu horizontal volta, grids em 2 colunas
   -------------------------------------------------------------------------- */
@media (min-width: 768px) {
  .nav-toggle { display: none; }
  .nav-list {
    position: static;
    flex-direction: row;
    background: transparent;
    border-bottom: none;
    padding: 0;
    max-height: none;
    overflow: visible;
  }
  .nav-list li { border-bottom: none; }
  .nav-list a { padding: 0.4rem 0.1rem; }
  .nav-cta { display: flex; }

  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: 1.1fr 1fr; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .profile-select { grid-template-columns: repeat(2, 1fr); }
  .quick-links { grid-template-columns: repeat(2, 1fr); }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .charts-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid { grid-template-columns: repeat(2, 1fr); }
  .form-grid .full-width { grid-column: 1 / -1; }

  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
}

/* --------------------------------------------------------------------------
   1024px+ — desktop: hero em duas colunas, dashboard em painel lateral
   -------------------------------------------------------------------------- */
@media (min-width: 1024px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .steps-grid { grid-template-columns: repeat(4, 1fr); }
  .kpi-grid { grid-template-columns: repeat(4, 1fr); }
  .dashboard-grid { grid-template-columns: 0.95fr 1.4fr; }
  .dashboard-grid .panel-form { grid-row: span 2; }
  .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
  .form-grid.form-grid-3 { grid-template-columns: repeat(3, 1fr); }
}

/* --------------------------------------------------------------------------
   1440px+ — ultra-wide
   -------------------------------------------------------------------------- */
@media (min-width: 1440px) {
  .container { max-width: 1400px; }
  .hero { min-height: 88vh; }
  .charts-grid { grid-template-columns: repeat(2, 1fr); }
}

/* --------------------------------------------------------------------------
   Ajustes finos de mobile puro (< 480px)
   -------------------------------------------------------------------------- */
@media (max-width: 479px) {
  .hero-actions .btn { flex: 1; }
  .hero-visual .float-card { display: none; }
  .dashboard-actions .btn span.btn-label { display: none; }
  table.data-table { min-width: 620px; }
}