/* ============ Variables de color ============ */
:root {
    --color-primary: #2748b3;   /* Azul */
    --color-secondary: #f34707; /* Rojo/Naranja */
    --color-accent: #84dd0e;    /* Verde */
    --color-bg: #ffffff;        /* Fondo blanco */
    --color-text: #333333;      
  
    /* Para modo oscuro (opcional) */
    --color-bg-dark: #1f1f1f;
    --color-text-dark: #ffffff;
  }
  
  /* ============ Estilos generales ============ */
  body {
    margin: 0;
    padding: 0;
    font-family: 'Poppins', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
  }
  
  /* ============ Barra de navegación (Navbar) ============ */
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--color-primary);
    padding: 10px 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  }
  .navbar .logo {
    height: 40px;
    transition: transform 0.3s;
  }
  .navbar .logo:hover {
    transform: scale(1.1);
  }
  .navbar .btn-menu {
    background: none;
    border: none;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
  }
  .navbar .btn-menu:hover {
    opacity: 0.8;
  }
  
  /* ============ Botón switch para modo oscuro ============ */
  .toggle-container {
    display: flex;
    align-items: center;
  }
  .switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 30px;
    margin-left: 15px;
  }
  .switch input {
    opacity: 0;
    width: 0;
    height: 0;
  }
  .slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--color-secondary);
    transition: .4s;
    border-radius: 30px;
  }
  .slider:before {
    position: absolute;
    content: "";
    height: 22px;
    width: 22px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
  }
  input:checked + .slider {
    background-color: var(--color-accent);
  }
  input:checked + .slider:before {
    transform: translateX(28px);
  }
  .icon {
    font-size: 12px;
    position: absolute;
    top: 8px;
  }
  .sun {
    left: 8px;
  }
  .moon {
    right: 8px;
  }
  
  /* ============ Contenedor principal ============ */
  .container,
  .md-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    background: none; /* o #f9f9f9 si deseas un contenedor gris claro */
  }
  
  /* Para dictionary.html */
  .container {
    max-width: 900px;
  }
  
  /* Para traductor.html */
  .md-container {
    max-width: 90%;
    background: white;
    border-radius: 8px;
  }
  
  /* ============ Encabezados / logos centrales ============ */
  .logo-container, .md-header {
    text-align: center;
    margin-bottom: 2rem;
  }
  .logo-container img, .md-header img {
    max-width: 300px;
  }

  .logo-container1, .md-header {
    text-align: center;
    margin-bottom: 2rem;
  }
  .logo-container1 img {
    width: 400px;
  }
  
  /* ============ Buscador (dictionary.html) ============ */
  .search-container {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
  }
  .search-container input {
    width: 60%;
    padding: 10px;
    border: 2px solid var(--color-primary);
    border-radius: 4px 0 0 4px;
    outline: none;
    font-size: 16px;
  }
  .search-container button {
    padding: 10px 20px;
    border: 2px solid var(--color-primary);
    border-left: none;
    background-color: var(--color-primary);
    color: #fff;
    cursor: pointer;
    border-radius: 0 4px 4px 0;
  }
  .search-container button:hover {
    background-color: var(--color-secondary);
  }
  
  /* ============ Acordeones (dictionary.html) ============ */
  .accordion {
    margin-bottom: 10px;
    border: 2px solid var(--color-primary);
    border-radius: 4px;
    overflow: hidden;
  }
  .accordion h2 {
    background-color: var(--color-primary);
    color: #fff;
    margin: 0;
    padding: 15px;
    font-size: 18px;
    cursor: pointer;
  }
  .accordion h2:hover {
    background-color: var(--color-secondary);
  }
  .accordion .content {
    background-color: #fff; 
    padding: 15px;
    display: none;
  }
  .accordion .content p {
    margin: 0;
  }
  
  /* Publicidad (dictionary.html) */
  #advertisement img {
    max-width: 100%;
    margin: 20px 0;
    border: 2px solid var(--color-accent);
    border-radius: 4px;
  }
  
  /* ============ Textareas y Controles (traductor.html) ============ */
  .textarea-container {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    margin-bottom: 1rem;
    flex-wrap: wrap;
  }
  .md-select {
    position: relative;
    display: block;
    margin-bottom: 1rem;
    width: 100%;
  }
  .md-select-field {
    width: 100%;
    font-size: 16px;
    color: var(--color-text);
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-primary);
    padding: 16px 0 8px 0;
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
  }
  .md-select-field:focus {
    border-bottom-color: var(--color-secondary);
  }
  .md-select label {
    position: absolute;
    left: 0;
    top: 0;
    pointer-events: none;
    color: #999;
    font-size: 16px;
    transition: 0.2s ease all;
    transform: translateY(24px);
  }
  .md-select-field:focus + label,
  .md-select-field:not([value=""]) + label {
    transform: translateY(0);
    font-size: 14px;
    color: var(--color-accent);
  }
  .md-textarea {
    position: relative;
    flex: 1;
    min-width: 250px;
  }
  .md-textarea textarea {
    width: 100%;
    font-size: 16px;
    background: transparent;
    color: var(--color-text);
    border: none;
    border-bottom: 2px solid var(--color-primary);
    padding: 16px 0 8px 0;
    resize: none;
    outline: none;
    transition: border-color 0.2s;
  }
  .md-textarea textarea:focus {
    border-bottom-color: var(--color-secondary);
  }
  .md-textarea label {
    position: absolute;
    left: 0;
    top: 0;
    pointer-events: none;
    color: #999;
    font-size: 16px;
    transition: 0.2s ease all;
    transform: translateY(24px);
  }
  .md-textarea textarea:focus + label,
  .md-textarea textarea:not(:placeholder-shown) + label {
    transform: translateY(0);
    font-size: 14px;
    color: var(--color-accent);
  }
  .md-textarea textarea::placeholder {
    color: transparent;
  }
  
  /* Botón de intercambio */
  .btn-swap {
    background-color: var(--color-bg);
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    cursor: pointer;
    transition: box-shadow 0.2s, background-color 0.2s;
  }
  .btn-swap:hover {
    background-color: #ececec;
  }
  .btn-swap:active {
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
  }
  
  /* Botones verticales */
  .btn-group-vertical {
    display: flex;
    flex-direction: column;
    gap: 6px;
  }
  .btn-group-vertical .btn {
    border-radius: 6px;
    border: 2px solid var(--color-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    font-size: 16px;
    width: 48px;
    height: 48px;
    cursor: pointer;
    transition: background-color 0.2s, box-shadow 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .btn-group-vertical .btn i {
    color: var(--color-primary);
    font-size: 20px;
  }
  .btn-group-vertical .btn:hover {
    background-color: #ececec;
  }
  .btn-group-vertical .btn:active {
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.2);
  }
  
  /* Botón Traducir */
  .btn-primary-md {
    display: inline-block;
    width: 100%;
    background-color: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    padding: 10px;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s, box-shadow 0.2s;
  }
  .btn-primary-md i {
    margin-right: 5px;
  }
  .btn-primary-md:hover {
    background-color: var(--color-secondary);
  }
  .btn-primary-md:active {
    box-shadow: 0 2px 4px rgba(0,0,0,0.2) inset;
  }
  
  /* Historial (traductor.html) */
  .history {
    margin-top: 20px;
    background: #fff;
    border-radius: 6px;
    padding: 15px;
    max-height: 200px;
    overflow-y: auto;
    border: 2px solid var(--color-accent);
  }
  .history h5 {
    margin-bottom: 1rem;
    color: var(--color-primary);
  }
  .history ul {
    padding-left: 20px;
    margin-bottom: 0;
  }
  .clear-history {
    display: block;
    margin-top: 10px;
    text-align: right;
    cursor: pointer;
    color: var(--color-secondary);
  }
  .clear-history:hover {
    text-decoration: underline;
  }
  
  /* ============ Modo oscuro (opcional) ============ */
  body.dark-mode {
    background-color: var(--color-bg-dark);
    color: var(--color-text-dark);
  }
  body.dark-mode .navbar {
    background-color: #333;
  }
  body.dark-mode .logo:hover {
    transform: scale(1.1);
    opacity: 0.9;
  }
  body.dark-mode .search-container input {
    background-color: #444;
    border: 2px solid var(--color-accent);
    color: #fff;
  }
  body.dark-mode .search-container button {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
  }
  body.dark-mode .accordion h2 {
    background-color: var(--color-primary);
  }
  body.dark-mode .accordion .content {
    background-color: #333;
    color: #fff;
  }
  body.dark-mode .md-container {
    background-color: #333;
  }
  body.dark-mode .md-select-field,
  body.dark-mode .md-textarea textarea {
    border-bottom-color: #666;
    color: #fff;
  }
  body.dark-mode .md-select-field:focus,
  body.dark-mode .md-textarea textarea:focus {
    border-bottom-color: var(--color-secondary);
  }
  body.dark-mode .btn-swap {
    border: 2px solid #666;
    color: #fff;
  }
  body.dark-mode .btn-group-vertical .btn {
    border: 2px solid #666;
    color: #fff;
  }
  body.dark-mode .btn-primary-md {
    background-color: #666;
    color: #fff;
  }
  body.dark-mode .history {
    background-color: #444;
    border: 2px solid var(--color-accent);
  }