/* ============================================================
   COMPONENTES REUTILIZÁVEIS
   ============================================================ */

/* ── Layout Shell ── */
#app {
  display: flex;
  min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-width, 260px);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 200;
  transition: transform var(--transition-base);
}

.sidebar-header {
  padding: var(--space-6) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.sidebar-logo {
  width: 100%;
  max-width: 110px; /* Impede a imagem de estourar a tela */
  height: auto;
  border-radius: var(--radius-md);
  object-fit: contain;
}

.sidebar-title {
  font-size: var(--font-size-md);
  font-weight: 800;
  color: var(--color-text-primary);
  text-align: center;
  line-height: 1.2;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-icon {
  font-size: 32px;
  color: var(--color-primary);
  font-variation-settings: 'FILL' 1;
}

.brand-name {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.3;
}

.brand-name strong {
  color: var(--color-primary);
  font-size: var(--font-size-md);
  font-weight: 700;
  display: block;
}

.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-item:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.nav-item.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 20%;
  height: 60%;
  width: 3px;
  background: var(--color-primary);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
}

.nav-item--ufmg {
  margin-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  padding-top: calc(var(--space-4) + var(--space-3));
}

.nav-item--ufmg:hover,
.nav-item--ufmg.active {
  background: var(--color-ufmg-light);
  color: var(--color-ufmg);
}

.nav-item--ufmg.active::before {
  background: var(--color-ufmg);
}

.nav-item .material-symbols-rounded {
  font-size: 22px;
  font-variation-settings: 'FILL' 0, 'wght' 400;
  flex-shrink: 0;
}

.nav-item.active .material-symbols-rounded {
  font-variation-settings: 'FILL' 1, 'wght' 500;
}

/* Sidebar footer */
.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.user-card {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-sm);
  flex-shrink: 0;
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-name {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Topbar (mobile) ── */
.topbar {
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  height: var(--topbar-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.topbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 700;
  color: var(--color-primary);
  font-size: var(--font-size-md);
}

.topbar-brand .material-symbols-rounded {
  font-variation-settings: 'FILL' 1;
  font-size: 24px;
}

/* ── Main Content ── */
.main-content {
  margin-left: var(--sidebar-width, 260px); /* Adicione o , 260px aqui também */
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.screen-container {
  flex: 1;
  padding: var(--space-8);
  padding-bottom: calc(var(--space-8) + 60px); /* espaço para ad banner */
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
}

/* ── Cards ── */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-1);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.card:hover {
  box-shadow: var(--shadow-2);
}

.card--elevated {
  box-shadow: var(--shadow-2);
}

.card--clickable {
  cursor: pointer;
}

.card--clickable:hover {
  box-shadow: var(--shadow-3);
  transform: translateY(-2px);
}

.card-body {
  padding: var(--space-6);
}

.card-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ── Badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.badge--free {
  background: #E3F2FD;
  color: var(--color-primary);
}

.badge--premium {
  background: linear-gradient(135deg, #FFD700, #F9A825);
  color: #5D4037;
}

.badge--success {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge--ufmg {
  background: var(--color-ufmg-light);
  color: var(--color-ufmg);
}

/* ── Chips ── */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip-scroll {
  display: flex;
  gap: var(--space-2);
  overflow-x: auto;
  padding-bottom: var(--space-2);
  scrollbar-width: none;
}

.chip-scroll::-webkit-scrollbar { display: none; }

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 500;
  border: 1.5px solid var(--color-border-dark);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
}

.chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.chip.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(30, 136, 229, 0.35);
}

.chip .material-symbols-rounded {
  font-size: 16px;
}

/* ── Botões ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  position: relative;
  overflow: hidden;
}

.btn .material-symbols-rounded {
  font-size: 20px;
  font-variation-settings: 'FILL' 1;
}

.btn--primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 2px 8px rgba(30, 136, 229, 0.35);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 12px rgba(30, 136, 229, 0.45);
  transform: translateY(-1px);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background: var(--color-primary-light);
  color: var(--color-primary);
  box-shadow: none;
}

.btn--secondary:hover {
  background: #BBDEFB;
}

.btn--gold {
  background: linear-gradient(135deg, #FFD700, #F9A825);
  color: #4E342E;
  box-shadow: 0 2px 8px rgba(249, 168, 37, 0.4);
}

.btn--gold:hover {
  box-shadow: 0 4px 16px rgba(249, 168, 37, 0.5);
  transform: translateY(-1px);
}

.btn--danger {
  background: var(--color-ufmg);
  color: white;
  box-shadow: 0 2px 8px rgba(198, 40, 40, 0.35);
}

.btn--danger:hover {
  background: var(--color-ufmg-dark);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1.5px solid var(--color-border-dark);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-md);
  border-radius: var(--radius-lg);
}

.btn--sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
}

.btn--full {
  width: 100%;
}

.btn--icon {
  padding: var(--space-2);
  border-radius: var(--radius-md);
  aspect-ratio: 1;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* Icon button */
.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.icon-btn:hover {
  background: var(--color-bg);
  color: var(--color-text-primary);
}

.icon-btn .material-symbols-rounded {
  font-size: 22px;
}

/* FAB */
.fab {
  position: fixed;
  bottom: calc(var(--space-8) + 60px);
  right: var(--space-6);
  z-index: 50;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  font-weight: 600;
  font-size: var(--font-size-sm);
  box-shadow: var(--shadow-4);
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
}

.fab:hover {
  box-shadow: 0 8px 25px rgba(30, 136, 229, 0.45);
  transform: translateY(-2px);
}

.fab .material-symbols-rounded {
  font-size: 22px;
  font-variation-settings: 'FILL' 1;
}

/* ── Inputs ── */
.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.input-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.input-label .material-symbols-rounded {
  font-size: 18px;
  color: var(--color-primary);
}

.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-field:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.15);
}

.input-field::placeholder {
  color: var(--color-text-hint);
}

.textarea-field {
  resize: vertical;
  min-height: 200px;
  line-height: 1.8;
}

.input-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-hint);
}

/* Search input */
.search-wrap {
  position: relative;
}

.search-wrap .material-symbols-rounded {
  position: absolute;
  left: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  font-size: 20px;
  color: var(--color-text-hint);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: var(--space-3) var(--space-4) var(--space-3) calc(var(--space-3) + 28px);
  border: 1.5px solid var(--color-border-dark);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
}

/* ── Progress Bar ── */
.progress-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), #42A5F5);
  transition: width var(--transition-slow);
}

.progress-fill--gold {
  background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold));
}

.progress-fill--success {
  background: linear-gradient(90deg, var(--color-success), #81C784);
}

/* ── Coins Badge ── */
.coins-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  background: linear-gradient(135deg, #FFF8E1, #FFF3CD);
  border: 1.5px solid var(--color-gold);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #5D4037;
}

.coins-badge .material-symbols-rounded {
  font-size: 18px;
  color: var(--color-gold-dark);
  font-variation-settings: 'FILL' 1;
}

/* ── Accordion ── */
.accordion {
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

.accordion:has(.accordion-trigger[aria-expanded="true"]) {
  box-shadow: var(--shadow-2);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  background: var(--color-surface);
  border: none;
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-primary);
  gap: var(--space-3);
  transition: background var(--transition-fast);
}

.accordion-trigger:hover {
  background: var(--color-bg);
}

.accordion-trigger[aria-expanded="true"] {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.accordion-icon {
  font-size: 20px !important;
  transition: transform var(--transition-base);
  flex-shrink: 0;
  color: var(--color-text-hint);
}

.accordion-trigger[aria-expanded="true"] .accordion-icon {
  transform: rotate(180deg);
  color: var(--color-primary);
}

.accordion-body {
  display: none;
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.accordion-body.open {
  display: block;
}

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  animation: fadeIn var(--transition-base);
}

.modal-overlay.hidden {
  display: none;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-4);
  animation: slideUp 250ms ease-out;
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--color-surface);
  z-index: 1;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
}

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

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ── Stat Cards ── */
.stat-card {
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}

.stat-value {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ── Lock Overlay ── */
.locked-wrapper {
  position: relative;
}

.locked-wrapper .locked-overlay {
  position: absolute;
  inset: 0;
  background: rgba(245, 247, 250, 0.85);
  backdrop-filter: blur(2px);
  border-radius: inherit;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  z-index: 10;
}

.locked-overlay .material-symbols-rounded {
  font-size: 40px;
  color: var(--color-text-hint);
  font-variation-settings: 'FILL' 1;
}

.locked-content {
  opacity: 0.35;
  pointer-events: none;
  user-select: none;
}

/* ── Ad Banner ── */
.ad-banner {
  position: fixed;
  bottom: 0;
  left: var(--sidebar-width);
  right: 0;
  height: 56px;
  background: linear-gradient(135deg, #37474F, #263238);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-xs);
  z-index: 90;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.ad-banner .material-symbols-rounded {
  font-size: 18px;
  color: var(--color-gold);
}

.ad-close {
  position: absolute;
  right: var(--space-4);
  background: transparent;
  border: none;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
  font-size: 16px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.ad-close:hover {
  color: white;
}

/* ── Overlay de Anúncio (Rewarded Video Simulado) ── */
.ad-rewarded-overlay {
  background: #000;
  padding: var(--space-8);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  min-height: 300px;
  justify-content: center;
}

.ad-rewarded-screen {
  width: 100%;
  height: 200px;
  background: linear-gradient(135deg, #1A237E, #283593);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-3);
  color: rgba(255,255,255,0.8);
  position: relative;
  overflow: hidden;
}

.ad-rewarded-screen::before {
  content: 'AD';
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  font-size: var(--font-size-xs);
  background: rgba(255,255,255,0.2);
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.ad-timer {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: white;
}

/* ── Score Display ── */
.score-display {
  text-align: center;
  padding: var(--space-8) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.score-number {
  font-size: 72px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  text-shadow: 0 4px 20px rgba(30, 136, 229, 0.25);
  animation: slideUp var(--transition-slow);
}

.score-max {
  font-size: var(--font-size-xl);
  color: var(--color-text-hint);
  font-weight: 500;
}

.score-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 500;
  margin-top: var(--space-2);
}

/* ── Page Header ── */
.page-header {
  margin-bottom: var(--space-8);
}

.page-title {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.page-title .material-symbols-rounded {
  font-size: 32px;
  color: var(--color-primary);
  font-variation-settings: 'FILL' 1;
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--space-2);
}

/* ── Timer ── */
.timer-display {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--color-text-primary);
  letter-spacing: 0.05em;
}

.timer-display.warning { color: var(--color-warning); }
.timer-display.danger { color: var(--color-error); animation: pulse 1s ease-in-out infinite; }

/* ── Tabs ── */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  gap: 0;
}

.tab {
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
  cursor: pointer;
  border: none;
  background: transparent;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tab:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
  animation: fadeIn var(--transition-base);
}

.tab-content.active {
  display: block;
}

/* ── Sidebar overlay (mobile) ── */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 190;
}

/* ── Citação/Repertório ── */
.quote-block {
  background: linear-gradient(135deg, #E3F2FD, #BBDEFB);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-4) var(--space-5);
  font-style: italic;
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  line-height: 1.7;
  user-select: text;
}

.example-block {
  background: linear-gradient(135deg, #E8F5E9, #C8E6C9);
  border-left: 4px solid var(--color-success);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-sm);
  line-height: 1.7;
  user-select: text;
}

.example-block-header {
  font-weight: 700;
  color: #2E7D32;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-4);
  }

  .sidebar-overlay.visible {
    display: block;
  }

  .main-content {
    margin-left: 0;
  }

  .topbar {
    display: flex;
  }

  .screen-container {
    padding: var(--space-4);
    padding-bottom: calc(var(--space-4) + 60px);
  }

  .ad-banner {
    left: 0;
  }

  .fab {
    bottom: calc(var(--space-4) + 60px);
    right: var(--space-4);
  }
}

/* ── INTERVENTION GENERATOR SCREEN ── */
.intervention-generator-screen {
  display: flex;
  flex-direction: column;
  min-height: 100vh; /* Garante que ocupe a altura total */
  padding: var(--space-6); /* Ajuste conforme seu design-system */
  background-color: var(--color-background);
}

.intervention-generator-screen .grid {
  display: grid;
  grid-template-columns: 1fr; /* Padrão mobile */
  gap: var(--space-8);
}

@media (min-width: 1024px) { /* Exemplo para desktop (lg) */
  .intervention-generator-screen .grid {
    grid-template-columns: 1fr 1fr; /* Duas colunas em telas maiores */
  }
}

/* Estilos para o cartão de preview */
#intervention-preview-card-container .card {
  height: 100%; /* Garante que o cartão ocupe a altura disponível */
  display: flex;
  flex-direction: column;
}

#intervention-preview-card-container .card .flex-grow {
  background-color: var(--color-background); /* Fundo cinza claro para o texto */
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  overflow: auto; /* Permite rolagem se o texto for muito longo */
}

#intervention-proposal-text {
  font-size: var(--font-size-md);
  line-height: 1.6;
  color: var(--color-text-primary);
}

/* Estilos para os indicadores de passo (bolinhas) */
.intervention-generator-screen .flex.justify-center.mb-6 span {
  transition: background-color 0.3s ease;
}

/* Estilos para o tooltip (se você não tiver um sistema de tooltip mais robusto) */
.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip .tooltip-text {
  visibility: hidden;
  background-color: var(--color-text-primary);
  color: #fff;
  text-align: center;
  border-radius: var(--radius-sm);
  padding: 5px 8px;
  position: absolute;
  z-index: 10;
  bottom: 125%; /* Posição acima do ícone */
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  white-space: nowrap; /* Impede que o texto quebre linha */
  font-size: var(--font-size-xs);
}

.tooltip .tooltip-text::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--color-text-primary) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
  visibility: visible;
  opacity: 1;
}
/* ============================================================
   TELA: FLASHCARDS (3D FLIP)
   ============================================================ */

.flashcard-scene {
  perspective: 1000px; /* Cria o ambiente 3D */
  width: 100%;
  max-width: 600px;
  height: 350px;
  margin: 0 auto;
}

.flashcard-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d; /* Garante que os filhos tenham 3D */
  cursor: pointer;
  box-shadow: var(--shadow-2);
  border-radius: var(--radius-xl);
}

/* Classe que aciona a rotação */
.flashcard-inner.is-flipped {
  transform: rotateY(180deg);
  box-shadow: 0 12px 30px rgba(30, 136, 229, 0.2);
}

.flashcard-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /* Esconde a parte de trás do elemento virado */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  background-color: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
}

/* O verso do cartão (já começa virado de costas) */
.flashcard-back {
  transform: rotateY(180deg);
  background: linear-gradient(135deg, var(--color-surface), var(--color-primary-light));
  border-color: var(--color-primary);
}

.flashcard-category {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.flashcard-text {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.flashcard-back .flashcard-text {
  font-size: var(--font-size-2xl);
  color: var(--color-primary-dark);
}

.flashcard-hint {
  position: absolute;
  bottom: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-hint);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Botões de Ação (escondidos até virar o card) */
.flashcard-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-top: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.3s ease;
}

.flashcard-actions.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
/* ============================================================
   TELA: DUELO DE ARGUMENTOS (DRAG AND DROP)
   ============================================================ */

.duel-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Pool de cartas (Onde elas começam) */
.duel-pool {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-height: 120px;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

/* Áreas de Soltar (Tese A e Tese B) */
.duel-arena {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .duel-arena { grid-template-columns: 1fr 1fr; } /* Lado a lado no Desktop */
}

.duel-zone {
  background: var(--color-surface);
  border: 2px dashed var(--color-border-dark);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-height: 250px;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: all 0.2s ease;
}

.duel-zone-header {
  text-align: center;
  font-weight: 800;
  font-size: var(--font-size-md);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-border);
}

/* Efeito visual quando passa uma carta por cima */
.duel-zone.drag-over {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  transform: scale(1.02);
}

/* A Carta em si */
.draggable-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  cursor: grab;
  box-shadow: var(--shadow-1);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
  user-select: none;
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
}

.draggable-card:active {
  cursor: grabbing;
  transform: scale(1.05) rotate(-2deg);
  box-shadow: var(--shadow-3);
}

.draggable-card .material-symbols-rounded {
  color: var(--color-primary);
  font-size: 20px;
}

/* Cores de Acerto e Erro */
.draggable-card.success {
  border-color: var(--color-success);
  background: var(--color-success-light);
  pointer-events: none; /* Trava a carta depois de acertar */
}

.draggable-card.error {
  border-color: var(--color-error);
  background: #FFEBEE;
  animation: shake 0.4s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}