/* ==========================================================
   layout.css — Estrutura de página e regiões principais
   Humboldt / Atlas Interativo de Geografia
   ========================================================== */

/* --- Cabeçalho ------------------------------------------ */
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.logo {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  color: var(--color-text-inv);
  border-bottom: none;
  text-decoration: none;
  flex-shrink: 0;
}

.logo:hover, .logo:focus {
  color: var(--color-accent-lt);
  border-bottom: none;
}

.logo-symbol {
  font-size: var(--size-md);
  color: var(--color-accent-lt);
  display: inline-block;
  transform: rotate(45deg);
  transform-origin: center;
}

.logo-name {
  font-family: var(--font-display);
  font-size: var(--size-xl);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: inherit;
}

/* --- Navegação principal --------------------------------- */
.nav-links {
  list-style: none;
  padding: 0;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-links > li { position: relative; }

.nav-links a,
.nav-dropdown-btn,
.btn-teacher {
  font-family: var(--font-mono);
  font-size: var(--size-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: rgba(242, 237, 227, 0.8);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  transition: color var(--transition-fast), background var(--transition-fast);
  display: block;
  border: none;
  border-bottom: none;
  background: none;
  cursor: pointer;
  white-space: nowrap;
}

.nav-links a:hover, .nav-links a:focus,
.nav-dropdown-btn:hover, .nav-dropdown-btn:focus,
.nav-links a[aria-current="page"] {
  color: var(--color-text-inv);
  background: rgba(255,255,255,0.1);
  border-bottom: none;
}

.btn-teacher {
  color:        var(--color-accent-lt);
  border:       1px solid rgba(196, 163, 90, 0.5);
  border-radius: var(--radius);
  padding:      0.4rem 0.9rem;   /* igual aos outros itens da nav mas com borda */
  font-size:    0.75rem;
  line-height:  1.2;
}

.btn-teacher:hover,
.btn-teacher[aria-pressed="true"] {
  background:   rgba(196, 163, 90, 0.18);
  border-color: var(--color-accent-lt);
  color:        var(--color-accent-lt);
}

/* Dropdown de módulos */
.nav-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: var(--color-primary);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  list-style: none;
  padding: var(--space-2);
}

.has-dropdown:hover .nav-dropdown,
.has-dropdown:focus-within .nav-dropdown {
  display: block;
  animation: fade-in 150ms ease;
}

.nav-dropdown li a {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  display: block;
  font-size: var(--size-sm);
}

/* Botão de menu mobile */
.nav-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--color-text-inv);
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger::before { top: -6px; }
.hamburger::after  { top:  6px; }

/* --- Conteúdo principal ---------------------------------- */
#main-content {
  min-height: calc(100vh - 80px - 80px);
  position: relative;
  z-index: 1;
}

#view-container {
  min-height: calc(100vh - 160px);
}

/* --- Tela de carregamento -------------------------------- */
.loading-screen {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  transition: opacity var(--transition-slow);
}

.loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.loading-symbol {
  font-size: 3rem;
  color: var(--color-primary);
  display: inline-block;
  animation: spin 2s linear infinite;
  transform-origin: center;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* --- Layout da view MÓDULO -------------------------------- */
.view-module {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
}

.module-header {
  margin-bottom: var(--space-12);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-border);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: start;
  gap: var(--space-8);
}

/* --- Layout da view LIÇÃO --------------------------------- */
.view-lesson {
  display: grid;
  grid-template-columns: 1fr 360px;
  grid-template-rows: auto 1fr;
  min-height: calc(100vh - 80px);
}

.lesson-main {
  grid-column: 1;
  grid-row: 1 / 3;
  padding: var(--space-8) var(--space-8) var(--space-8) var(--space-8);
  border-right: 1px solid var(--color-border);
  overflow-y: auto;
}

.lesson-sidebar {
  grid-column: 2;
  grid-row: 1 / 3;
  padding: var(--space-6);
  background: var(--color-bg-panel);
  overflow-y: auto;
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 80px);
}

/* --- Rodapé --------------------------------------------- */
#site-footer {
  background: var(--color-primary);
  color: var(--color-text-inv);
  padding: var(--space-8) var(--space-6);
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: var(--size-md);
  font-weight: 600;
  color: var(--color-text-inv);
}

.footer-ecosystem {
  font-size: var(--size-sm);
  color: rgba(242, 237, 227, 0.6);
}

.footer-ecosystem a {
  color: rgba(242, 237, 227, 0.8);
  border-bottom-color: rgba(242, 237, 227, 0.3);
}

.footer-ecosystem a:hover {
  color: var(--color-accent-lt);
}

/* --- Painel de acessibilidade --------------------------- */
.a11y-panel {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: 300;
  display: flex;
  flex-direction: column-reverse;
  align-items: flex-end;
  gap: var(--space-2);
}

.a11y-toggle-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-text-inv);
  font-family: var(--font-mono);
  font-size: var(--size-sm);
  font-weight: 400;
  border: 2px solid var(--color-border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: background var(--transition-fast);
}

.a11y-toggle-btn:hover { background: var(--color-primary-mid); }

.a11y-controls {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 220px;
}

.a11y-controls-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-1);
}

.a11y-controls-title {
  font-family: var(--font-mono);
  font-size: var(--size-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.a11y-close-btn {
  font-size: var(--size-base);
  color: var(--color-text-muted);
  padding: 0 var(--space-1);
  line-height: 1;
  border: none;
  background: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.a11y-close-btn:hover { color: var(--color-text); }

.a11y-controls label {
  font-size: var(--size-sm);
  color: var(--color-text-mid);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toggle-label {
  flex-direction: row !important;
  align-items: center;
  gap: var(--space-2) !important;
  cursor: pointer;
}

/* ==========================================================
   Seções da Home
   ========================================================== */

/* ── Hero ── */
.home-hero {
  padding: 5rem 0 4rem;
}

.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-8);
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-16);
  align-items: center;
}

.hero-text {
  display: flex;
  flex-direction: column;
}

.hero-eyebrow {
  font-family:    var(--font-mono);
  font-size:      0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color:          var(--color-accent);
  margin-bottom:  var(--space-4);
}

.hero-title {
  font-size:     clamp(2.25rem, 5vw, 3.75rem);
  line-height:   1.05;
  color:         var(--color-primary);
  margin-bottom: var(--space-5);
}

.hero-lead {
  font-size:     var(--size-md);
  line-height:   1.75;
  color:         var(--color-text-mid);
  max-width:     44ch;
  margin-bottom: var(--space-8);
}

.hero-actions {
  display:   flex;
  gap:       var(--space-3);
  flex-wrap: wrap;
}

.hero-globe {
  display:         flex;
  align-items:     center;
  justify-content: center;
}

/* ── Faixa de escalas ── */
.home-scale-strip {
  background:    var(--color-primary);
  border-top:    1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.scale-strip-inner {
  max-width:      1280px;
  margin:         0 auto;
  padding:        var(--space-12) var(--space-8);
}

.scale-strip-label {
  display:        block;
  font-family:    var(--font-mono);
  font-size:      0.6rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color:          rgba(242,237,227,0.35);
  margin-bottom:  var(--space-8);
}

.scale-grid {
  display:               grid;
  grid-template-columns: repeat(4, 1fr);
  border-top:            1px solid rgba(255,255,255,0.12);
}

.scale-item {
  padding:        var(--space-8) 0 0;
  padding-right:  var(--space-8);
  background:     transparent;
  display:        flex;
  flex-direction: column;
  gap:            var(--space-3);
  cursor:         pointer;
  border-left:    none;
  transition:     none;
  position:       relative;
}

.scale-item::before {
  content:    '';
  position:   absolute;
  top:        -1px;
  left:       0;
  width:      0;
  height:     2px;
  background: var(--color-accent-lt);
  transition: width var(--transition);
}

.scale-item:hover::before,
.scale-item:focus::before {
  width: 100%;
}

.scale-item:hover .scale-item-name,
.scale-item:focus .scale-item-name {
  color: var(--color-accent-lt);
}

.scale-item:focus {
  outline: none;
}

.scale-item:focus-visible::before {
  width: 100%;
}

.scale-item-name {
  font-family: var(--font-display);
  font-size:   var(--size-xl);
  font-weight: 600;
  color:       var(--color-text-inv);
  line-height: 1;
  transition:  color var(--transition-fast);
}

.scale-item-desc {
  font-family:    var(--font-mono);
  font-size:      0.62rem;
  letter-spacing: 0.08em;
  color:          rgba(242,237,227,0.4);
}

/* ── Operações cognitivas ── */
.home-ops {
  border-bottom: 1px solid var(--color-border);
  padding:       var(--space-16) 0;
}

.ops-inner {
  max-width: 1280px;
  margin:    0 auto;
  padding:   0 var(--space-8);
}

.ops-header {
  display:         flex;
  align-items:     baseline;
  gap:             var(--space-6);
  margin-bottom:   var(--space-12);
  padding-bottom:  var(--space-6);
  border-bottom:   1px solid var(--color-border);
}

.ops-eyebrow {
  font-family:    var(--font-mono);
  font-size:      0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color:          var(--color-accent);
  white-space:    nowrap;
}

.ops-heading {
  font-family: var(--font-display);
  font-size:   var(--size-2xl);
  color:       var(--color-primary);
  font-weight: 700;
  line-height: 1;
  margin:      0;
}

.ops-grid {
  display:               grid;
  grid-template-columns: repeat(4, 1fr);
  gap:                   var(--space-10);
}

.ops-card {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-4);
}

.ops-symbol {
  font-size:   1.1rem;
  color:       var(--color-accent);
  line-height: 1;
  opacity:     0.8;
}

.ops-card-title {
  font-family: var(--font-display);
  font-size:   var(--size-lg);
  color:       var(--color-primary);
  font-weight: 700;
  line-height: var(--leading-tight);
}

.ops-card-desc {
  font-size:   var(--size-sm);
  line-height: 1.7;
  color:       var(--color-text-muted);
  margin:      0;
}

/* ── Módulos ── */
.home-modules {
  padding: var(--space-16) 0 var(--space-24);
}

.modules-inner {
  max-width: 1280px;
  margin:    0 auto;
  padding:   0 var(--space-8);
}

.modules-heading {
  font-family:    var(--font-display);
  font-size:      var(--size-2xl);
  color:          var(--color-primary);
  font-weight:    700;
  margin-bottom:  var(--space-12);
  padding-bottom: var(--space-4);
  border-bottom:  1px solid var(--color-border);
}

.modules-level {
  margin-bottom: var(--space-16);
}

.level-tag {
  display:        inline-block;
  font-family:    var(--font-mono);
  font-size:      0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color:          var(--color-accent);
  border:         1px solid rgba(139, 94, 46, 0.35);
  border-radius:  100px;
  padding:        0.3em 0.8em;
  margin-bottom:  var(--space-6);
}

.modules-grid {
  display:               grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap:                   var(--space-4);
}

/* ── Responsividade da home ── */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap:                   var(--space-10);
  }
  .ops-grid {
    grid-template-columns: repeat(2, 1fr);
    gap:                   var(--space-6);
  }
  .scale-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .home-hero   { padding: var(--space-10) 0 var(--space-8); }
  .hero-inner  { padding: 0 var(--space-4); gap: var(--space-8); }
  .ops-inner,
  .modules-inner { padding: 0 var(--space-4); }
  .hero-globe  { order: -1; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; text-align: center; }
  .ops-grid    { grid-template-columns: 1fr; gap: var(--space-4); }
  .scale-strip-inner { padding: var(--space-6) var(--space-4); }
  .scale-grid  { grid-template-columns: repeat(2, 1fr); }
}

/* --- Seções internas da view de módulo ------------------- */
.module-objective {
  padding:       var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.module-lessons-section {
  padding-top: var(--space-8);
}

.lessons-list {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-3);
  margin-top:     var(--space-6);
}

.module-meta {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-2);
  align-items:    flex-end;
}

.module-meta-item {
  font-family:    var(--font-mono);
  font-size:      var(--size-xs);
  letter-spacing: var(--tracking-wide);
  color:          var(--color-text-muted);
  padding:        var(--space-1) var(--space-3);
  border:         1px solid var(--color-border);
  border-radius:  100px;
}