/* =========================================================
   COMPONENTES DE INTERFACE - QUÍMICA SEM MISTÉRIO
   ========================================================= */

/* Hero / Cabeçalho de Seção */
.section-hero {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.12));
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(99, 102, 241, 0.2);
  color: var(--primary-light);
  border: 1px solid var(--primary-glow);
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.hero-description {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 800px;
}

/* =========================================================
   TRILHA DO APRENDIZADO (ROADMAP)
   ========================================================= */

.roadmap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.roadmap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  cursor: pointer;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.roadmap-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.roadmap-card.completed {
  border-color: var(--accent-emerald);
}

.roadmap-card.completed::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent-emerald);
}

.roadmap-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.roadmap-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  background: rgba(99, 102, 241, 0.15);
  color: var(--primary-light);
}

.roadmap-badge {
  font-size: 0.75rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

.roadmap-badge.done {
  background: rgba(16, 185, 129, 0.2);
  color: var(--accent-emerald-light);
  border-color: var(--accent-emerald);
}

.roadmap-card-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.roadmap-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  flex: 1;
}

.roadmap-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-light);
}

/* =========================================================
   TEORIA DESCOMPLICADA & MACETES
   ========================================================= */

.theory-block {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.theory-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.theory-title-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.theory-step-number {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

.theory-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--text-primary);
}

.speech-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-full);
  color: var(--accent-cyan);
  padding: 0.4rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.2s ease;
}

.speech-btn:hover {
  background: var(--accent-cyan);
  color: #fff;
}

.analogy-box {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.03));
  border-left: 4px solid var(--accent-amber);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem;
  margin: 1.25rem 0;
}

.analogy-title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--accent-amber);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.analogy-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Escadinha dos Oxiácidos (Visual Mnemônico) */
.oxygen-ladder {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin: 1.5rem 0;
}

.ladder-step {
  display: grid;
  grid-template-columns: 140px 180px 1fr;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.ladder-step:hover {
  border-color: var(--primary-light);
  transform: scale(1.01);
}

.ladder-step.standard {
  background: linear-gradient(90deg, rgba(99, 102, 241, 0.15), rgba(6, 182, 212, 0.08));
  border-color: var(--primary);
}

.ladder-badge {
  font-weight: 700;
  font-size: 0.85rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  text-align: center;
}

.ladder-prefix-suffix {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent-cyan);
}

.ladder-example {
  font-size: 0.92rem;
  color: var(--text-secondary);
}

/* =========================================================
   PRATELEIRA DO DIA A DIA (GALERIA DOS ÁCIDOS)
   ========================================================= */

.everyday-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.everyday-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  transition: all 0.25s ease;
  position: relative;
}

.everyday-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 25px rgba(6, 182, 212, 0.2);
}

.everyday-icon-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.everyday-emoji {
  font-size: 2.2rem;
}

.acid-formula-tag {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.95rem;
  background: rgba(6, 182, 212, 0.15);
  color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan-glow);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
}

.everyday-acid-name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--text-primary);
  font-weight: 700;
}

.everyday-use-text {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.everyday-did-you-know {
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  font-size: 0.8rem;
  color: var(--accent-amber);
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
}

/* =========================================================
   LABORATÓRIO VIRTUAL & SIMULADORES
   ========================================================= */

.lab-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (max-width: 900px) {
  .lab-container {
    grid-template-columns: 1fr;
  }
}

.lab-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.lab-panel-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.beaker-stage {
  height: 260px;
  background: radial-gradient(circle at bottom, rgba(6, 182, 212, 0.25) 0%, rgba(18, 24, 38, 0.9) 70%);
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-top: none;
  border-radius: 0 0 30px 30px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: inset 0 -10px 25px rgba(6, 182, 212, 0.3);
}

.water-surface {
  position: absolute;
  top: 35%;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(6, 182, 212, 0.25);
  border-top: 2px dashed rgba(255, 255, 255, 0.4);
  transition: all 0.4s ease;
}

.ions-container {
  position: absolute;
  top: 40%;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
}

.ion-particle {
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  transition: all 0.5s ease;
}

.ion-particle.h-plus {
  background: var(--accent-rose);
  border: 2px solid #fff;
}

.ion-particle.cl-minus {
  background: var(--accent-emerald);
  border: 2px solid #fff;
}

.ion-particle.so4-minus {
  background: var(--accent-purple);
  border: 2px solid #fff;
  width: 44px;
}

/* Lâmpada de Condutibilidade */
.circuit-stage {
  height: 260px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem;
}

.lightbulb-icon {
  font-size: 4.5rem;
  color: #475569;
  transition: color 0.4s ease, filter 0.4s ease;
}

.lightbulb-icon.active {
  color: #facc15;
}

.electrodes-beaker {
  width: 180px;
  height: 100px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top: none;
  border-radius: 0 0 16px 16px;
  position: relative;
  background: rgba(6, 182, 212, 0.15);
  display: flex;
  justify-content: space-around;
}

.electrode {
  width: 8px;
  height: 80px;
  background: #94a3b8;
  border-radius: 4px;
}

.lab-controls-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* =========================================================
   MOTOR DE EXERCÍCIOS GUIADOS ("CLIQUE E AVANCE")
   ========================================================= */

.exercise-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  margin-top: 1rem;
}

.exercise-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.exercise-source-tag {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid var(--primary-glow);
  color: var(--primary-light);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
}

.steps-progress-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.step-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: all 0.3s ease;
}

.step-dot.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
  box-shadow: 0 0 12px var(--primary-glow);
}

.step-dot.completed {
  border-color: var(--accent-emerald);
  background: var(--accent-emerald);
  color: #fff;
}

/* Enunciado do Exercício */
.exercise-statement-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
  line-height: 1.6;
}

/* Etapa Guiada Atual (Scaffolding) */
.scaffold-step-card {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(6, 182, 212, 0.05));
  border: 2px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.scaffold-instruction {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.option-btn {
  background: var(--bg-secondary);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  width: 100%;
}

.option-btn:hover:not(:disabled) {
  background: var(--bg-card-hover);
  border-color: var(--primary-light);
  color: var(--text-primary);
  transform: translateX(4px);
}

.option-btn.correct {
  background: rgba(16, 185, 129, 0.2) !important;
  border-color: var(--accent-emerald) !important;
  color: #fff !important;
  box-shadow: 0 0 15px var(--accent-emerald-glow);
}

.option-btn.wrong {
  background: rgba(244, 63, 94, 0.15) !important;
  border-color: var(--accent-rose) !important;
  color: #fff !important;
}

.option-letter {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--bg-primary);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--primary-light);
  flex-shrink: 0;
}

/* Feedback Acolhedor de Acerto/Erro */
.feedback-box {
  padding: 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1.25rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  font-size: 0.95rem;
}

.feedback-box.success {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid var(--accent-emerald);
  color: #ecfdf5;
}

.feedback-box.error {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid var(--accent-rose);
  color: #fff1f2;
}

.feedback-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

/* Botões de Ação do Exercício */
.exercise-action-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.btn-success {
  background: linear-gradient(135deg, var(--accent-emerald), #059669);
  color: #fff;
  box-shadow: 0 4px 14px var(--accent-emerald-glow);
}

.btn-success:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-emerald-glow);
}

.btn-secondary {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-card-hover);
  color: var(--text-primary);
}

.btn-hint {
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid var(--accent-amber);
  color: var(--accent-amber);
}

.btn-hint:hover {
  background: var(--accent-amber);
  color: #000;
}

/* =========================================================
   MODAL DE DICAS & EXPLICAÇÕES
   ========================================================= */

.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1.5rem;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  max-width: 550px;
  width: 100%;
  padding: 1.75rem;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  animation: popSuccess 0.3s ease;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-amber);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 800;
}

.modal-content {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
}

/* =========================================================
   CONQUISTAS & BADGES
   ========================================================= */

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.achievement-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  transition: all 0.2s ease;
  opacity: 0.55;
  filter: grayscale(80%);
}

.achievement-card.unlocked {
  opacity: 1;
  filter: none;
  border-color: var(--accent-amber);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(26, 34, 52, 0.8));
}

.achievement-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.achievement-card.unlocked .achievement-icon {
  border-color: var(--accent-amber);
  box-shadow: 0 0 15px var(--accent-amber-glow);
}

.achievement-info {
  display: flex;
  flex-direction: column;
}

.achievement-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.achievement-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}