/* Mobile-first: base styles are mobile */

/* ≥ 640px: tablets small */
@media (min-width: 640px) {
  .kpi-row {
    grid-template-columns: repeat(3, 1fr);
  }
  .kpi-row--salve {
    grid-template-columns: repeat(2, 1fr);
  }
  .kpi-row--groups {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .kpi-row--salve {
    grid-template-columns: repeat(4, 1fr);
  }
  .kpi-row--groups {
    grid-template-columns: repeat(5, 1fr);
  }
}

/* ≥ 768px: tablets */
@media (min-width: 768px) {
  .evento-card {
    grid-template-columns: 1fr 1fr;
  }

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

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

/* ≥ 900px: desktop */
@media (min-width: 900px) {
  .sobre-grid {
    grid-template-columns: 2fr 1fr;
  }

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

  .footer-inner {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .nav-toggle {
    display: none;
  }

  .main-nav {
    display: block !important;
  }
}

/* ≤ 899px: mobile nav */
@media (max-width: 899px) {
  .nav-toggle {
    display: flex;
  }

  .main-nav {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    z-index: calc(var(--z-nav) - 1);
    padding: var(--space-4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }

  [data-theme="dark"] .main-nav {
    background: rgba(8,15,7,0.97);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
  }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
  }

  .charts-row {
    grid-template-columns: 1fr;
  }

  .chart-card--wide {
    grid-column: 1;
  }

  .evento-card {
    grid-template-columns: 1fr;
  }

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

/* ≤ 640px: small mobile */
@media (max-width: 640px) {
  :root {
    --container-padding: var(--space-4);
  }

  .section {
    padding-block: var(--space-16);
  }

  .section-title {
    font-size: var(--text-3xl);
  }

  .hero-logo {
    width: 120px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .kpi-row {
    grid-template-columns: 1fr;
  }

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

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

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

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

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

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

  .footer-inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .library-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-wrapper {
    max-width: 100%;
  }

  .modal-body {
    padding: var(--space-4) var(--space-5) var(--space-6);
  }

  .emergency-fab {
    bottom: var(--space-4);
    right: var(--space-4);
  }

  .theme-toggle {
    top: auto;
    bottom: var(--space-16);
    right: var(--space-4);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .emergency-fab {
    animation: none !important;
  }
}