/* Variables globales para modo claro y oscuro */
:root {
    --primary-bg: #ffffff;
    --secondary-bg: rgba(255, 255, 255, 0.8);
    --primary-text: #333333;
    --accent-color: #5d7ce0;
    --border-color: #e0e0e0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition-speed: 0.3s;
    --font-family: 'Roboto', sans-serif;
  }
  
  [data-theme="dark"] {
    --primary-bg: #181818;
    --secondary-bg: rgba(28, 28, 28, 0.8);
    --primary-text: #e0e0e0;
    --accent-color: #9fbcff;
    --border-color: #333333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  }
  
  /* Reset y tipografía */
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: var(--font-family);
    background-color: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.6;
    padding: 20px;
    transition: background-color var(--transition-speed), color var(--transition-speed);
  }
  
  /* Contenedor principal */
  .container {
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--secondary-bg);
    backdrop-filter: blur(8px);
    border-radius: 10px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: background-color var(--transition-speed);
  }
  

  header h1 {
    font-size: 2.5rem;
    margin-bottom: 5px;
  }
  
  .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
  }
  
  /* Sección de contenido */
  .content {
    padding: 20px;
  }
  
  /* Sección de subida */
  .upload-section {
    text-align: center;
    padding: 40px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    margin-bottom: 20px;
    transition: all var(--transition-speed);
  }
  
  .upload-section:hover {
    border-color: var(--accent-color);
    background-color: rgba(93, 124, 224, 0.1);
  }
  
  .upload-btn {
    background-color: var(--accent-color);
    color: #fff;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color var(--transition-speed);
    margin-top: 10px;
  }
  
  .upload-btn:hover {
    background-color: #4a62c7;
  }
  
  #fileInput {
    display: none;
  }
  
  /* Preview y paleta */
  .preview-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
  }
  
  @media (min-width: 768px) {
    .preview-container {
      flex-direction: row;
    }
    
    .image-preview,
    .palette-container {
      flex: 1;
    }
  }
  .image-preview {
    display: flex;
    flex-direction: column;
    align-items: center ;
    justify-content: center ;
  }
  
  
  .image-preview {
    text-align: center;
    
  }
  
  #imagePreview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: none;
    margin-top: 15px;
    margin-bottom: 25px;
    
  }
  
  /* Paleta */
  .palette-container {
    display: none;
    background-color: var(--secondary-bg);
    padding: 0px;
    border-radius: 8px;
  }
  
  .palette-container h3 {
    text-align: center;
    margin-bottom: 15px;
  }
  
  
  
  .controls {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
    justify-content: center;
    align-items: center;
  }
  
  #colorCount {
    width: 60px;
    text-align: center;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
  }
  
  .control-btn {
    background-color: var(--accent-color);
    border: none;
    padding: 8px 15px;
    border-radius: 5px;
    cursor: pointer;
    color: #fff;
    transition: background-color var(--transition-speed);
  }
  
  .control-btn:hover {
    background-color: #4a62c7;
  }
  
  .palette {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  
  .color-item {
    display: flex;
    align-items: center;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform var(--transition-speed);
  }
  
  .color-item:hover {
    transform: scale(1.02);
  }
  
  .color-preview {
    width: 80px;
    height: 50px;
  }
  
  .color-info {
    padding: 10px 15px;
    flex-grow: 1;
    background-color: var(--primary-bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .color-hex {
    font-family: monospace;
    font-size: 1.1rem;
  }
  
  .copy-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
    transition: all var(--transition-speed);
  }
  
  .copy-btn:hover {
    background-color: #f0f0f0;
  }
  
  /* Loader moderno */
  .loader {
    display: none;
    text-align: center;
    padding: 20px;
  }
  
  .spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top: 4px solid var(--accent-color);
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto 10px;
  }
  
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }