/* === Variáveis CSS Globais === */
:root {
    /* --- Tema Claro (Padrão) --- */
    --color-primary: #4a90e2; /* Azul diferente para este jogo */
    --color-primary-dark: #357abd;
    --color-secondary: #6c757d;
    --color-secondary-dark: #5a6268;
    --color-success: #34a853;
    --color-danger: #ea4335;
    --color-text: #212529;
    --color-text-muted: #555;
    --color-border: #d1d5db;
    --color-border-focus: var(--color-primary);
    --color-background: linear-gradient(135deg, #f5f7fa 0%, #e9edf2 100%);
    --color-card-background: #ffffff;
    --color-button-icon-bg: #e9ecef;
    --color-button-icon-hover: #dee2e6;
    --color-result-bg: #e9ecef;
  
    /* Cores Primárias RYB (Digitais Aproximadas) */
    --color-rgb-red: #ff0000;
    --color-rgb-green: #00ff00;
    --color-rgb-blue: #0000ff;
    /* Futuro: */
    /* --color-ryb-black: #111111; */
    /* --color-ryb-white: #ffffff; */
  
    /* Sombras e Outros */
    --box-shadow-card: 0 5px 15px rgba(0, 0, 0, 0.08);
    --box-shadow-focus: 0 0 0 3px color-mix(in srgb, var(--color-primary) 30%, transparent);
    --box-shadow-focus-secondary: 0 0 0 3px color-mix(in srgb, var(--color-secondary) 30%, transparent);
  
    --font-family-base: 'Roboto', sans-serif;
    --font-size-base: 1rem;
    --font-size-h1: 2rem;
    --font-size-label: 1rem;
    --font-size-button: 0.95rem;
    --line-height-base: 1.6;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-width: 2px;
    --transition-base: all 0.3s ease;
    --transition-fast: all 0.2s ease-out;
    --transition-color: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
  }
  
  /* --- Tema Escuro --- */
  [data-theme='dark'] {
    --color-primary: #5e9eff;
    --color-primary-dark: #4a90e2;
    --color-secondary: #adb5bd;
    --color-secondary-dark: #868e96;
    --color-success: #52c569;
    --color-danger: #ff6b6b;
    --color-text: #dee2e6;
    --color-text-muted: #adb5bd;
    --color-border: #495057;
    --color-border-focus: var(--color-primary);
    --color-background: linear-gradient(135deg, #1c1e22 0%, #25282d 100%);
    --color-card-background: #2b2f36;
    --color-button-icon-bg: #343a40;
    --color-button-icon-hover: #495057;
    --color-result-bg: #343a40;
  
    /* Sombras para o escuro */
    --box-shadow-card: 0 5px 15px rgba(0, 0, 0, 0.25);
    --box-shadow-focus: 0 0 0 3px color-mix(in srgb, var(--color-primary) 40%, transparent);
    --box-shadow-focus-secondary: 0 0 0 3px color-mix(in srgb, var(--color-secondary) 40%, transparent);
  }
  
  /* === Reset Básico e Estilos Gerais === */
  * {
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

body{
    margin: 0;
    background-color: rgb(0, 0, 0);
}

header {
    z-index: 1000;
    position: fixed;
    width: 100%;
    margin: 0;
    background-color: rgb(0, 0, 0);
}

.header-options {
    gap: 10px;
    display: flex;
    justify-content: center;
    margin: 0 auto;
    width: 90%;
    font-size: 15pt;
    text-align: center;
}

.header-link {
    margin: 0;
    font-size: 12pt;
    font-family: 'Courier New', Courier, monospace;
    font-weight: 600;
    color: rgb(255, 255, 255);
    text-decoration: none;
    transition: all 1s ;
    padding-top: 10px;
    width: 100px;
    padding-bottom: 10px;
    border: 2px solid;
    border-color: #000000; /*52257c*/
    margin-top: 10px;
    margin-bottom: 10px;
}

.header-link:hover {
    font-size: 12pt;
    width: 100%;
    border-color: #52257c;
}

  .theme-switcher .button-icon { /* Reutilizado do jogo anterior */
      background: var(--color-button-icon-bg); color: var(--color-text); border: none;
      border-radius: 50%; width: 40px; height: 40px; font-size: 1.2rem; cursor: pointer;
      display: flex; justify-content: center; align-items: center;
      transition: var(--transition-color), transform 0.1s ease;
  }
  .theme-switcher .button-icon:hover { background: var(--color-button-icon-hover); transform: scale(1.1); }
  .theme-switcher .button-icon:focus-visible { outline: none; box-shadow: var(--box-shadow-focus); }
  
  .game-container.card {
    background: var(--color-card-background);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow-card);
    padding-top: 100px;
    max-width: 900px;
    margin: 0 auto; /* Centraliza */
    display: flex;
    flex-direction: column;
    text-align: center;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
  }
  
  h1 { color: var(--color-primary); margin-bottom: var(--spacing-sm); font-size: var(--font-size-h1); font-weight: 700; transition: color 0.2s ease; }
  h1 > i { margin-right: var(--spacing-sm); font-size: 0.9em; }
  .instructions { color: var(--color-text-muted); margin-bottom: var(--spacing-lg); font-size: 0.95rem; transition: color 0.2s ease; }
  #currentDateTime { font-weight: 500; }
  
  /* === Área do Desafio === */
  .challenge-area { margin-bottom: var(--spacing-lg); }
  .color-display {
      display: flex;
      justify-content: space-around;
      align-items: flex-start; /* Alinha pelo topo */
      gap: var(--spacing-lg);
      margin-bottom: var(--spacing-md);
      flex-wrap: wrap; /* Permite quebrar em telas menores */
  }
  .color-info {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: var(--spacing-sm);
  }
  .color-label { font-weight: 500; font-size: var(--font-size-label); color: var(--color-text); transition: color 0.2s ease; }
  .color-box {
      width: 150px;
      height: 150px;
      border-radius: var(--border-radius-md);
      border: var(--border-width) solid var(--color-border);
      transition: background-color 0.3s ease, border-color 0.2s ease;
      box-shadow: inset 0 2px 4px rgba(0,0,0,0.05);
  }
  .target-box { background-color: #eee; } /* Placeholder */
  .mixed-box { background-color: #f8f8f8; } /* Cor inicial da paleta vazia */
  
  .color-value {
      font-size: 0.85rem;
      color: var(--color-text-muted);
      min-height: 1.2em; /* Evita pulo de layout */
      font-family: monospace; /* Fica bom para HEX/RGB */
  }
  
  .mix-proportions {
      font-size: 0.9rem;
      color: var(--color-text-muted);
      margin-top: var(--spacing-sm);
      min-height: 1.5em;
      font-style: italic;
  }
  
  /* === Área de Controles === */
  .controls-area {
      margin-bottom: var(--spacing-lg);
      padding-top: var(--spacing-md);
      border-top: 1px solid var(--color-border);
      transition: border-color 0.2s ease;
  }
  .controls-label { font-weight: 500; margin-bottom: var(--spacing-md); color: var(--color-text); }
  .primary-buttons {
      display: flex;
      justify-content: center;
      gap: var(--spacing-md);
      flex-wrap: wrap;
      margin-bottom: var(--spacing-lg);
  }
  .button-primary {
      padding: var(--spacing-sm) var(--spacing-md);
      border: var(--border-width) solid var(--primary-color-value, var(--color-border)); /* Usa a variável inline */
      border-radius: var(--border-radius-md);
      background-color: rgb(27, 27, 27); /* Fundo claro com a cor */
      color: var(--primary-color-value, var(--color-text));
      font-size: var(--font-size-button);
      font-weight: 500;
      cursor: pointer;
      transition: var(--transition-color), transform 0.1s ease, box-shadow 0.1s ease;
      display: inline-flex;
      align-items: center;
      gap: var(--spacing-sm);
      min-width: 100px; /* Largura mínima */
      justify-content: center;
  }
  .button-primary:hover {
      transform: scale(1.05);
      box-shadow: 0 2px 5px color-mix(in srgb, var(--primary-color-value, black) 30%, transparent);
      background-color: color-mix(in srgb, var(--primary-color-value, white) 30%, var(--color-card-background));
  }
  .button-primary:active {
      transform: scale(1);
  }
  .button-primary:focus-visible {
      outline: none;
      box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary-color-value, blue) 50%, transparent);
  }
  .button-primary i { margin-right: var(--spacing-xs); }
  
  .action-buttons {
      display: flex;
      justify-content: center;
      gap: var(--spacing-md);
      flex-wrap: wrap;
  }
  
  /* Estilo Geral de Botão (reutilizado do jogo anterior) */
  .button {
      padding: var(--spacing-sm) var(--spacing-lg); font-size: var(--font-size-button);
      font-weight: 500; font-family: var(--font-family-base); border: none;
      border-radius: var(--border-radius-md); background-color: var(--color-primary);
      color: white; cursor: pointer; transition: var(--transition-color), transform 0.1s ease, box-shadow 0.2s ease;
      display: inline-flex; align-items: center; gap: var(--spacing-sm); text-decoration: none;
  }
  .button:hover { background-color: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
  .button:active { transform: translateY(0); background-color: var(--color-primary-dark); }
  .button:focus-visible { outline: none; box-shadow: var(--box-shadow-focus); }
  
  .button-secondary { background-color: var(--color-secondary); }
  .button-secondary:hover { background-color: var(--color-secondary-dark); box-shadow: 0 2px 4px rgba(0,0,0,0.1); }
  .button-secondary:active { background-color: var(--color-secondary-dark); }
  .button-secondary:focus-visible { box-shadow: var(--box-shadow-focus-secondary); }
  
  /* === Área de Feedback === */
  .feedback-area { margin-top: var(--spacing-md); }
  .result-message {
      font-size: 1.1rem;
      font-weight: 500;
      padding: var(--spacing-md);
      border-radius: var(--border-radius-md);
      min-height: 3em;
      display: flex;
      justify-content: center;
      align-items: center;
      background-color: var(--color-result-bg);
      transition: var(--transition-color), opacity 0.3s ease;
      opacity: 0; /* Começa invisível */
      transform: translateY(10px);
  }
  .result-message.show {
      opacity: 1;
      transform: translateY(0);
  }
  .result-message.success {
      color: var(--color-success);
      background-color: color-mix(in srgb, var(--color-success) 15%, var(--color-card-background));
      border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
  }
  .result-message.error {
      color: var(--color-danger);
      background-color: color-mix(in srgb, var(--color-danger) 15%, var(--color-card-background));
      border: 1px solid color-mix(in srgb, var(--color-danger) 30%, transparent);
  }
  
  /* === Media Queries === */
  @media (max-width: 768px) {
    :root { --font-size-h1: 1.8rem; --spacing-lg: 1.2rem; }
    body { padding: var(--spacing-sm); }
    .site-header { padding: 0 var(--spacing-sm) var(--spacing-sm); }
    .game-container.card { padding: var(--spacing-md); }
    .color-box { width: 120px; height: 120px; }
    .primary-buttons, .action-buttons { gap: var(--spacing-sm); }
    .button, .button-primary { font-size: 0.9rem; padding: var(--spacing-sm) var(--spacing-md); }
  }
  
  @media (max-width: 480px) {
    :root { --font-size-h1: 1.6rem; }
    .color-display { flex-direction: column; align-items: center; gap: var(--spacing-md); }
    .color-box { width: 100px; height: 100px; }
    .primary-buttons { flex-direction: column; align-items: stretch; }
    .action-buttons { flex-direction: column; align-items: stretch; }
  }