:root {
  /* Definir variáveis de cores com base no logo da Chatlabs */
  --primary-color: #2FE694; /* Verde-água do logo */
  --secondary-color: #1A1A1A; /* Quase preto do logo */
  --light-bg: #FDFDFD; /* Fundo muito claro */
  --dark-text: #333333; /* Texto principal */
  --light-text: #666666; /* Texto secundário */
  --border-color: #E0E0E0; /* Bordas suaves */
  --shadow-color: rgba(0,0,0,0.08); /* Sombra mais sutil */
}

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

body {
  font-family: 'Inter', 'Roboto', 'Segoe UI', sans-serif; /* Fonte Chatlabs */
  background-color: var(--light-bg); /* Cor Chatlabs */
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  color: var(--dark-text); /* Cor Chatlabs */
}

.header {
  padding: 1rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  text-align: center; 
  background-color: white;
  box-shadow: 0 4px 12px var(--shadow-color); /* Visual Chatlabs */
}

.logo {
  max-width: 180px; /* Visual Chatlabs */
  height: auto;
}

.main-content {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 2rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
}

.card {
  background-color: white;
  padding: 2rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border-radius: 16px; /* Visual Chatlabs */
  box-shadow: 0 12px 30px var(--shadow-color); /* Visual Chatlabs */
  text-align: center;
  max-width: 550px; 
  width: 100%;
  border: 1px solid var(--border-color); /* Visual Chatlabs */
}

form {
  display: flex;
  flex-direction: column;
  align-items: stretch; /* Visual Chatlabs (para botões 100%) */
  gap: 1.25rem; /* <-- ESPAÇAMENTO AMIGO (O valor correto) */
}

.custom-file-button {
  background-color: var(--primary-color); /* Cor Chatlabs */
  color: var(--secondary-color); /* Cor Chatlabs */
  padding: 0.75rem 1.2rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border: none;
  border-radius: 10px; /* Visual Chatlabs */
  cursor: pointer;
  font-size: 1.05rem; 
  font-weight: 600; 
  transition: all 0.2s ease-in-out;
  box-shadow: 0 4px 8px rgba(47, 230, 148, 0.3); 
}

.custom-file-button:hover {
  background-color: #23CC83; 
  transform: translateY(-2px); 
  box-shadow: 0 6px 12px rgba(47, 230, 148, 0.4);
}

.process-button {
  background-color: var(--secondary-color); /* Cor Chatlabs */
  color: white;
  padding: 0.75rem 1.2rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border: none;
  border-radius: 10px; /* Visual Chatlabs */
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  box-shadow: 0 4px 8px rgba(26, 26, 26, 0.2);
}

.process-button:hover {
  background-color: #000000; 
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(26, 26, 26, 0.3);
}

/* NOVO: Estilo do botão desativado */
.process-button:disabled {
  background-color: #555; /* Cinza escuro desbotado */
  color: #aaa;
  cursor: not-allowed;
  transform: translateY(0);
  box-shadow: 0 4px 8px rgba(26, 26, 26, 0.2);
}


#fileName {
  font-size: 0.95rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  color: var(--light-text); /* Cor Chatlabs */
}

.download-link {
  margin-top: 1rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  display: inline-block;
  background-color: var(--primary-color); /* Cor Chatlabs */
  color: var(--secondary-color); /* Cor Chatlabs */
  padding: 0.7rem 1.2rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border-radius: 10px; /* Visual Chatlabs */
  text-decoration: none;
  font-weight: 600;
  transition: background-color 0.2s ease-in-out;
}

.download-link:hover {
  background-color: #23CC83;
}

.footer {
  padding: 1rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  background-color: var(--light-bg); /* Cor Chatlabs */
  text-align: center;
  font-size: 0.9rem;
  color: var(--light-text); /* Cor Chatlabs */
  border-top: 1px solid var(--border-color); /* Visual Chatlabs */
}

/* --- ESTILOS DE FORMULÁRIO GERAIS --- */
.form-group {
  width: 100%;
  text-align: left;
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  color: var(--dark-text);
  font-size: 1rem;
}
.form-group input[type="text"] {
  width: 100%;
  padding: 0.65rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border: 1px solid var(--border-color);
  border-radius: 10px; /* Visual Chatlabs */
  font-size: 1rem;
  color: var(--dark-text);
  background-color: #FFFFFF;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.05); 
  transition: border-color 0.2s ease-in-out;
}
.form-group input[type="text"]:focus {
  border-color: var(--primary-color); 
  outline: none; 
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.05), 0 0 0 3px rgba(47, 230, 148, 0.2); 
}

/* --- ESTILOS DE MAPEAMENTO --- */
#mappingUi {
  width: 100%;
  border-top: 1px solid var(--border-color); /* Visual Chatlabs */
  padding-top: 1.25rem; /* <-- ESPAÇAMENTO AMIGO (O valor correto) */
}
#mappingUi p {
  font-weight: 600;
  color: var(--dark-text);
  margin-bottom: 1rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  text-align: left;
  font-size: 1rem;
}
.mapping-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  margin-bottom: 0.75rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
}
.mapping-row label {
  font-weight: 500;
  color: var(--dark-text);
  flex-basis: 40%; /* <-- ESPAÇAMENTO AMIGO (Original) */
  text-align: left;
  font-size: 0.95rem;
}
.mapping-row select {
  flex-basis: 60%; /* <-- ESPAÇAMENTO AMIGO (Original) */
  padding: 0.5rem; /* <-- ESPAÇAMENTO AMIGO (Original) */
  border: 1px solid var(--border-color);
  border-radius: 10px; /* Visual Chatlabs */
  background-color: #FFFFFF;
  font-size: 0.95rem;
  color: var(--dark-text);
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.05);
  transition: border-color 0.2s ease-in-out;
}
.mapping-row select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: inset 0 1px 3px rgba(0,0,0,0.05), 0 0 0 3px rgba(47, 230, 148, 0.2);
}

/* --- NOVO: ESTILOS DO LOADER (Tema Chatlabs) --- */
.loader {
  border: 5px solid var(--light-bg); /* Cor de fundo do tema */
  border-top: 5px solid var(--primary-color); /* Cor verde primária */
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 1.5rem auto 0 auto; /* Espaçamento acima e centralizado */
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}


/* ---------------------------------
   REGRAS DE RESPONSIVIDADE
  ---------------------------------
*/
@media (max-width: 600px) {
  
  .main-content {
    padding: 1rem 0.5rem; 
  }

  .card {
    padding: 1.5rem 1rem; 
  }

  .mapping-row {
    flex-direction: column; 
    align-items: flex-start; 
    gap: 0.5rem; 
    margin-bottom: 1rem; 
  }

  .mapping-row label,
  .mapping-row select {
    flex-basis: 100%;
    width: 100%;
  }

  .logo {
    max-width: 160px;
  }

  .footer {
    padding: 1rem 0.5rem;
  }
}