* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  width: 100%;
  height: 100%;
  font-family: system-ui, -apple-system, sans-serif;
  background: #08080c;
  color: #ededf5;
  scroll-behavior: smooth;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem;
}

@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }
}

h1 {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: #2563eb;
}

.pergunta {
  font-size: 0.95rem;
  color: #9a9ab0;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

h2 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #ededf5;
  border-bottom: 2px solid rgba(37, 99, 235, 0.2);
  padding-bottom: 0.5rem;
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: #ededf5;
}

.painel-principal {
  background: #101018;
  border: 1px solid #26263a;
  border-radius: 12px;
  padding: 2rem;
}

@media (max-width: 640px) {
  .painel-principal {
    padding: 1.25rem;
  }
}

/* CONTROLES */
.secao-controles {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: rgba(37, 99, 235, 0.05);
  border-radius: 8px;
  border-left: 3px solid #2563eb;
}

.grid-controles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.controle {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.controle label {
  font-size: 0.875rem;
  font-weight: 600;
  color: #ededf5;
}

.controle input[type="range"],
.controle select,
.controle textarea {
  background: #1a1a26;
  border: 1px solid #26263a;
  border-radius: 6px;
  color: #ededf5;
  font-family: inherit;
  padding: 0.5rem;
  font-size: 0.875rem;
}

.controle input[type="range"] {
  cursor: pointer;
  accent-color: #2563eb;
}

.controle input[type="range"]:focus,
.controle select:focus,
.controle textarea:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

.controle select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%232563eb' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  padding-right: 2rem;
}

.valor-controle {
  font-size: 0.75rem;
  color: #9a9ab0;
  font-family: 'Cascadia Code', Consolas, monospace;
}

.botao-secundario {
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid #2563eb;
  color: #2563eb;
  padding: 0.75rem 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.2s ease;
}

.botao-secundario:hover {
  background: rgba(37, 99, 235, 0.25);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.2);
}

.botao-secundario:active {
  transform: translateY(1px);
}

.botao-secundario:focus {
  outline: 2px solid #2563eb;
  outline-offset: 2px;
}

/* EDITOR DE DOCUMENTO */
.secao-documento {
  margin-bottom: 2rem;
}

.editor-documento {
  position: relative;
}

.editor-documento textarea {
  width: 100%;
  min-height: 200px;
  padding: 1rem;
  font-family: 'Cascadia Code', Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  resize: vertical;
}

@media (max-width: 640px) {
  .editor-documento textarea {
    min-height: 150px;
    font-size: 0.8rem;
  }
}

/* VISUALIZAÇÃO DE CHUNKS */
.secao-visualizacao {
  margin-bottom: 2rem;
}

.visualizacao {
  background: #1a1a26;
  border: 1px solid #26263a;
  border-radius: 8px;
  padding: 1.5rem;
  line-height: 1.8;
  font-size: 0.95rem;
  word-wrap: break-word;
  min-height: 200px;
  max-height: 400px;
  overflow-y: auto;
}

.chunk {
  position: relative;
  padding: 0.25rem 0;
  margin: 0.25rem 0;
}

.chunk-conteudo {
  padding: 0.5rem 0.75rem;
  border-radius: 4px;
  display: inline;
}

.chunk-1 { background-color: rgba(37, 99, 235, 0.2); }
.chunk-2 { background-color: rgba(16, 185, 129, 0.2); }
.chunk-3 { background-color: rgba(245, 158, 11, 0.2); }
.chunk-4 { background-color: rgba(236, 72, 153, 0.2); }
.chunk-5 { background-color: rgba(124, 58, 237, 0.2); }
.chunk-6 { background-color: rgba(239, 68, 68, 0.2); }

.overlap {
  border-left: 3px double #f59e0b;
  background-color: rgba(245, 158, 11, 0.3) !important;
}

.problema {
  background-color: rgba(239, 68, 68, 0.25) !important;
  border-left: 3px solid #ef4444;
}

/* MÉTRICAS */
.painel-metricas {
  margin-bottom: 2rem;
  padding: 1.5rem;
  background: rgba(37, 99, 235, 0.05);
  border-radius: 8px;
  border: 1px solid rgba(37, 99, 235, 0.1);
}

.grid-metricas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.metrica {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem;
  background: rgba(37, 99, 235, 0.05);
  border-radius: 6px;
  border: 1px solid #26263a;
}

.metrica .rotulo {
  font-size: 0.75rem;
  color: #9a9ab0;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metrica .valor {
  font-size: 1.5rem;
  font-weight: 700;
  color: #2563eb;
  font-family: 'Cascadia Code', Consolas, monospace;
}

/* LISTA DE CHUNKS */
.secao-chunks {
  margin-bottom: 2rem;
}

.lista-chunks {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 600px;
  overflow-y: auto;
}

.item-chunk {
  padding: 1rem;
  background: #1a1a26;
  border-left: 3px solid #2563eb;
  border-radius: 6px;
  border: 1px solid #26263a;
  border-left: 3px solid #2563eb;
}

.item-chunk.problematico {
  border-left-color: #ef4444;
  background: rgba(239, 68, 68, 0.05);
}

.chunk-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.chunk-numero {
  font-size: 0.875rem;
  font-weight: 600;
  color: #2563eb;
  font-family: 'Cascadia Code', Consolas, monospace;
}

.chunk-tamanho {
  font-size: 0.75rem;
  color: #9a9ab0;
  font-family: 'Cascadia Code', Consolas, monospace;
}

.chunk-avisos {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.aviso {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  padding: 0.5rem;
  border-radius: 4px;
  background: rgba(245, 158, 11, 0.1);
  color: #f59e0b;
  border-left: 2px solid #f59e0b;
}

.aviso.erro {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border-left-color: #ef4444;
}

.chunk-preview {
  margin-top: 0.75rem;
  padding: 0.75rem;
  background: rgba(16, 16, 24, 0.5);
  border-radius: 4px;
  font-size: 0.8rem;
  color: #9a9ab0;
  font-family: 'Cascadia Code', Consolas, monospace;
  word-break: break-word;
  max-height: 100px;
  overflow-y: auto;
}

/* LIÇÃO */
.bloco-licao {
  margin-top: 2rem;
  padding: 1.5rem;
  background: rgba(16, 185, 129, 0.05);
  border-radius: 8px;
  border-left: 3px solid #10b981;
}

.bloco-licao h3 {
  color: #10b981;
  margin-bottom: 0.75rem;
}

.bloco-licao p {
  font-size: 0.95rem;
  color: #9a9ab0;
  line-height: 1.6;
}

/* RESPONSIVIDADE */
@media (max-width: 640px) {
  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1rem;
  }

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

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

  .metrica {
    padding: 0.75rem;
  }

  .metrica .valor {
    font-size: 1.25rem;
  }

  .visualizacao {
    font-size: 0.85rem;
    max-height: 300px;
  }

  .lista-chunks {
    max-height: 400px;
  }

  .item-chunk {
    padding: 0.75rem;
  }

  .chunk-preview {
    font-size: 0.75rem;
    max-height: 80px;
  }
}

/* PREFERS-REDUCED-MOTION */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* SCROLLBAR PERSONALIZADO */
.visualizacao::-webkit-scrollbar,
.lista-chunks::-webkit-scrollbar,
.chunk-preview::-webkit-scrollbar {
  width: 8px;
}

.visualizacao::-webkit-scrollbar-track,
.lista-chunks::-webkit-scrollbar-track,
.chunk-preview::-webkit-scrollbar-track {
  background: rgba(37, 99, 235, 0.05);
  border-radius: 4px;
}

.visualizacao::-webkit-scrollbar-thumb,
.lista-chunks::-webkit-scrollbar-thumb,
.chunk-preview::-webkit-scrollbar-thumb {
  background: #2563eb;
  border-radius: 4px;
}

.visualizacao::-webkit-scrollbar-thumb:hover,
.lista-chunks::-webkit-scrollbar-thumb:hover,
.chunk-preview::-webkit-scrollbar-thumb:hover {
  background: #1d4ed8;
}

/* CONTRASTE E ACESSIBILIDADE */
@media (prefers-contrast: more) {
  .metrica .valor {
    text-shadow: 0 0 4px rgba(37, 99, 235, 0.5);
  }

  .chunk-numero {
    text-shadow: 0 0 2px rgba(37, 99, 235, 0.3);
  }
}