/* ================================================
   DataQuest — Responsive
   Breakpoints:
     md: <= 860px  (tablet / phone)
     sm: <= 480px  (small phone)
   ================================================ */

/* ══ GLOBAL ════════════════════════════════════════════════════════ */
html, body { max-width: 100%; overflow-x: hidden; }

/* ══ MOBILE SIDEBAR DRAWER ══════════════════════════════════════════ */
.sidebar-backdrop {
  display: none;
  position: fixed; inset: 0; z-index: 149;
  background: rgba(0,0,0,.5);
  backdrop-filter: blur(2px);
  animation: fadeIn .2s ease;
}
.sidebar-backdrop.open { display: block; }

.nav-menu-btn {
  display: none;
  align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 8px;
  color: var(--t-2); border: 1px solid var(--b-subtle);
  background: transparent; cursor: pointer;
  flex-shrink: 0; transition: color .12s, border-color .12s;
}
.nav-menu-btn:hover { color: var(--t-1); border-color: var(--b-default); }

/* ══ TABLET + PHONE (≤ 860px) ══════════════════════════════════════ */
@media (max-width: 860px) {

  /* ── Sidebar → drawer ── */
  .nav-menu-btn { display: flex; }
  .layout { grid-template-columns: 1fr; }

  .sidebar {
    display: block !important;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: min(300px, 85vw);
    z-index: 150;
    transform: translateX(-100%);
    transition: transform .28s cubic-bezier(.16,1,.3,1);
    box-shadow: 4px 0 40px rgba(0,0,0,.4);
    overflow-y: auto;
  }
  .sidebar.open { transform: translateX(0); }

  html[data-theme="light"] .sidebar        { box-shadow: 4px 0 40px rgba(0,0,0,.15); }
  html[data-theme="light"] .sidebar-backdrop { background: rgba(0,0,0,.3); }

  /* ── Module nav: esconde texto, mantém ícones ── */
  .nav           { padding: 0 12px; gap: 6px; }
  .nav-divider   { display: none; }
  .nav-module    { display: none; }
  /* Esconde só os textos, mantém os botões */
  .nav-btn-back span        { display: none; }
  .nav-score-label          { display: none; }
  .nav-btn-reset-label      { display: none; }

  /* ── Main content ── */
  .main { padding: 20px 16px; gap: 18px; }
  .ch-top { flex-direction: column; gap: 12px; }
  .ch-title { font-size: 1.3rem; }
  .pts-badge { align-self: flex-start; }
  .panels { grid-template-columns: 1fr; gap: 12px; }
  .hints-row { margin-left: 0; width: 100%; }
  .answer-actions { gap: 8px; }
  .answer-actions .btn { flex: 1; justify-content: center; }
  .done-banner { flex-wrap: wrap; gap: 12px; }
  .done-banner .btn-next { width: 100%; justify-content: center; }
  .page-footer { flex-direction: column; align-items: flex-start; gap: 4px; }

  /* ── Home nav ── */
  nav { padding: 0 20px; }
  .nav-logo-name { font-size: .9rem; }

  /* ── Home hero ── */
  .hero { padding: 80px 24px 56px; }
  .hero-title { font-size: clamp(2rem, 6vw, 3rem); }
  .hero-sub   { font-size: .95rem; }

  /* ── Home stats: grade 2×2 sempre alinhada ── */
  .hero-stats {
    display: grid !important;
    grid-template-columns: 1fr 1fr;
    width: 100%;
    max-width: 420px;
    /* Remove flex que causava o 4º item solto */
    flex-wrap: unset;
  }
  /* Zera todas as bordas primeiro */
  .hero-stat {
    border-right:  none !important;
    border-bottom: 1px solid rgba(255,255,255,.07) !important;
  }
  /* Coluna esquerda (ímpares) ganha borda direita */
  .hero-stat:nth-child(odd) {
    border-right: 1px solid rgba(255,255,255,.07) !important;
  }
  /* Última linha: sem borda inferior */
  .hero-stat:nth-last-child(-n+2) {
    border-bottom: none !important;
  }
  /* Light mode: bordas escuras */
  html[data-theme="light"] .hero-stat {
    border-bottom-color: rgba(0,0,0,.08) !important;
  }
  html[data-theme="light"] .hero-stat:nth-child(odd) {
    border-right-color: rgba(0,0,0,.08) !important;
  }

  /* ── Home modules grid ── */
  .modules-section { padding: 0 20px 60px; }
  .modules-grid    { grid-template-columns: 1fr; max-width: 500px; }
}

/* ══ SMALL PHONE (≤ 480px) ══════════════════════════════════════════ */
@media (max-width: 480px) {

  /* ── Module nav: compacta ao máximo sem overflow ── */
  .nav { padding: 0 10px; gap: 5px; height: 54px; }
  .nav-logo-name { font-size: .82rem; }
  /* Botões menores */
  .nav-btn        { padding: 5px 9px; font-size: .7rem; }
  .nav-score      { padding: 4px 9px; font-size: .66rem; }
  #themeToggle    { width: 28px; height: 28px; }

  /* ── Module main ── */
  .main { padding: 14px 12px; gap: 14px; }
  .ch-title { font-size: 1.1rem; }
  .ch-breadcrumb { font-size: .6rem; }
  .tag { font-size: .58rem; padding: 2px 8px; }
  .panels { gap: 10px; }
  .panel-head { font-size: .6rem; padding: 9px 14px; }
  .dt th, .dt td { padding: 6px 12px; font-size: .7rem; }
  .refs { grid-template-columns: 1fr; gap: 5px; }
  .answer-bar { padding: 10px 12px; gap: 8px; }
  .answer-input { font-size: .8rem; }
  .answer-label { font-size: .64rem; padding: 3px 8px; }
  .answer-actions { padding: 10px 12px; }
  .answer-actions .btn { font-size: .74rem; padding: 8px 14px; }
  .hints-row { flex-direction: column; }
  .btn-hint  { justify-content: center; }
  .pts-badge { font-size: .72rem; padding: 6px 13px; }
  .ch-desc   { font-size: .88rem; padding: 14px 16px; }
  .done-banner { padding: 14px 16px; }

  /* ── Home nav ── */
  nav { padding: 0 14px; }
  /* Esconde o "pts" do XP pill na home */
  .nav-xp-label { display: none; }
  /* Esconde link linkedin na home */
  .nav-link  { display: none; }
  /* Esconde o logo completo, mantém só o mark */
  .nav-logo-name { display: none; }

  /* ── Home hero ── */
  .hero { padding: 60px 16px 44px; }
  .hero-label   { font-size: .64rem; padding: 4px 12px; }
  .hero-title   { font-size: 1.8rem; letter-spacing: -.03em; }
  .hero-sub     { font-size: .88rem; margin-bottom: 32px; }

  /* ── Home stats: mantém 2×2 em telas pequenas ── */
  .hero-stats   { max-width: 100%; margin-bottom: 40px; }
  .hero-stat    { padding: 14px 16px; }
  .hero-stat-val { font-size: 1.2rem; }

  /* ── Home cards ── */
  .modules-section { padding: 0 12px 48px; }
  .mod-card   { padding: 20px; }
  .mc-title   { font-size: 1.05rem; }
  .mc-desc    { font-size: .82rem; }
  .mc-topics  { gap: 4px; }
  .mc-topic   { font-size: .56rem; }
  .mc-stat    { padding: 9px 10px; }
  .mc-stat-val { font-size: .9rem; }
  .mc-cta     { padding: 10px 14px; font-size: .76rem; }

  /* ── Home footer ── */
  footer { padding: 14px 16px; font-size: .65rem; flex-direction: column; gap: 4px; }
}