:root {
    /* Cores principais */
    --primary-color: #003366; /* Azul PRF */
    --primary-dark: #002244;
    --primary-light: #004488;
    --secondary-color: #ffffff; /* Branco */
    --accent-color: #ff9933; /* Laranja */
    --accent-hover: #ff8822;
    --accent-light: #ffbb77;
    --highlight-color: #e0e6f0; /* Azul claro */
    --success-color: #28a745; /* Verde */
    --danger-color: #dc3545; /* Vermelho */
    --warning-color: #ffc107; /* Amarelo */
    --info-color: #17a2b8; /* Ciano */
    
    /* Cores de fundo */
    --bg-color: #f5f7fa;
    --bg-card: #ffffff;
    --bg-footer: #002244;
    
    /* Cores de texto */
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --text-white: #ffffff;
    
    /* Sombras */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --shadow-inset: inset 0 2px 4px rgba(0,0,0,0.05);
    
    /* Bordas */
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 20px;
    
    /* Transições */
    --transition-speed: 0.3s;
    --transition-ease: cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Fonte */
    --font-family: 'Roboto', Arial, sans-serif;
    --font-heading: 'Montserrat', sans-serif;
    
    /* Z-index */
    --z-modal: 1000;
    --z-overlay: 900;
    --z-dropdown: 800;
    --z-header: 700;
    --z-tooltip: 600;
}

/* Tema escuro */
[data-theme="dark"] {
    --primary-color: #0055aa; 
    --primary-dark: #004488;
    --primary-light: #0066cc;
    --secondary-color: #333333;
    --highlight-color: #3a4252;
    
    --bg-color: #1a1a2e;
    --bg-card: #2a2a3e;
    --bg-footer: #0f0f1a;
    
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --text-light: #808080;
}

/* Reset e estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-family);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
    font-size: 16px;
    overflow-x: hidden;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: var(--border-radius-xl);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* Seleção de texto */
::selection {
    background-color: var(--primary-color);
    color: var(--text-white);
}

/* Switch de tema */
.theme-switch-wrapper {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    z-index: var(--z-header);
    gap: 10px;
}

.theme-switch {
    display: inline-block;
    height: 34px;
    position: relative;
    width: 60px;
}

.theme-switch input {
    display: none;
}

.slider {
    background-color: var(--highlight-color);
    bottom: 0;
    cursor: pointer;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: .4s;
    box-shadow: var(--shadow-sm);
}

.slider i {
    color: var(--warning-color);
    position: absolute;
    top: 8px;
    transition: .4s;
}

.slider i.fa-sun {
    left: 10px;
    opacity: 1;
}

.slider i.fa-moon {
    right: 10px;
    opacity: 0;
    color: var(--secondary-color);
}

.slider:before {
    background-color: var(--secondary-color);
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

input:checked + .slider i.fa-sun {
    opacity: 0;
}

input:checked + .slider i.fa-moon {
    opacity: 1;
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

/* Controle de som */
.sound-control {
    margin-left: 10px;
}

.sound-button {
    background-color: var(--highlight-color);
    color: var(--primary-color);
    border: none;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-ease);
    box-shadow: var(--shadow-sm);
}

.sound-button:hover {
    background-color: var(--primary-light);
    color: var(--secondary-color);
}

/* Painel de configurações */
.settings-panel {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100%;
    background-color: var(--bg-card);
    box-shadow: var(--shadow-lg);
    z-index: var(--z-modal);
    transition: right var(--transition-speed) var(--transition-ease);
    overflow-y: auto;
}

.settings-panel.open {
    right: 0;
}

.settings-header {
    padding: 20px;
    background-color: var(--primary-color);
    color: var(--text-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.settings-header h3 {
    margin: 0;
    font-family: var(--font-heading);
}

.close-button {
    background: none;
    border: none;
    color: var(--text-white);
    font-size: 20px;
    cursor: pointer;
    transition: color var(--transition-speed) var(--transition-ease);
}

.close-button:hover {
    color: var(--accent-light);
}

.settings-content {
    padding: 20px;
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.setting-item select,
.setting-item input[type="range"] {
    width: 100%;
    padding: 8px;
    border-radius: var(--border-radius);
    border: 1px solid var(--highlight-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
}

.setting-item select {
    appearance: none;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="12" height="6"><path d="M0 0l6 6 6-6z" fill="%23666"/></svg>');
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

.toggle {
    position: relative;
    display: inline-block;
    width: 52px;
    height: 26px;
}

.toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle label {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--highlight-color);
    transition: .4s;
    border-radius: 26px;
}

.toggle label:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: var(--secondary-color);
    transition: .4s;
    border-radius: 50%;
}

.toggle input:checked + label {
    background-color: var(--success-color);
}

.toggle input:checked + label:before {
    transform: translateX(26px);
}

.secondary-btn {
    background-color: var(--highlight-color);
    color: var(--text-secondary);
    border: none;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
    font-weight: 500;
    display: block;
    width: 100%;
    text-align: center;
}

.secondary-btn:hover {
    background-color: var(--primary-light);
    color: var(--text-white);
}

/* Header */
header {
    background-color: var(--primary-color);
    color: var(--text-white);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: var(--z-header);
}

.header-content {
    flex-grow: 1;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-family: var(--font-heading);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
    letter-spacing: 1px;
}

header p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

.header-buttons {
    display: flex;
    gap: 15px;
}

.icon-btn {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-ease),
                transform var(--transition-speed) var(--transition-ease);
}

.icon-btn:hover {
    background-color: var(--accent-color);
    transform: scale(1.1);
}

/* Container principal */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Modais */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal .close {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    transition: color var(--transition-speed) var(--transition-ease);
}

.modal .close:hover {
    color: var(--danger-color);
}

.modal h2 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-family: var(--font-heading);
}

.modal p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

/* Modal de perfil */
.profile-header {
    text-align: center;
    margin-bottom: 30px;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background-color: var(--highlight-color);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    transition: transform var(--transition-speed) var(--transition-ease),
                box-shadow var(--transition-speed) var(--transition-ease);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-card i {
    font-size: 30px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card h3 {
    margin-bottom: 5px;
    color: var(--text-primary);
    font-size: 16px;
}

.stat-card p {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-color);
    margin: 0;
}

.achievement-section {
    margin-top: 20px;
}

.achievement-section h3 {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.achievement {
    background-color: var(--highlight-color);
    border-radius: var(--border-radius);
    padding: 15px;
    text-align: center;
    transition: transform var(--transition-speed) var(--transition-ease);
}

.achievement.unlocked {
    background-color: var(--accent-light);
}

.achievement i {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 5px;
}

.achievement.unlocked i {
    color: var(--accent-color);
}

.achievement p {
    font-size: 12px;
    margin: 0;
    color: var(--text-secondary);
}

/* Formulário de contato */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--highlight-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 16px;
    transition: border-color var(--transition-speed) var(--transition-ease);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(0, 51, 102, 0.2);
}

/* Menu principal e filtro de disciplinas */
#main-menu h2 {
    text-align: center;
    margin-bottom: 30px;
    font-family: var(--font-heading);
    color: var(--primary-color);
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

#main-menu h2:after {
    content: '';
    position: absolute;
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

.discipline-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
    gap: 10px;
}

.filter-btn {
    background-color: var(--highlight-color);
    color: var(--text-secondary);
    border: none;
    padding: 8px 15px;
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    transition: all var(--transition-speed) var(--transition-ease);
    font-weight: 500;
}

.filter-btn:hover {
    background-color: var(--primary-light);
    color: var(--text-white);
}

.filter-btn.active {
    background-color: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

/* Cards de jogos */
.game-selection {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.game-card {
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 1.8rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-align: center;
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.game-card .card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0,51,102,0.05) 0%, rgba(0,51,102,0.15) 100%);
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-speed) var(--transition-ease);
}

.game-card:hover {
    transform: translateY(-7px);
    box-shadow: var(--shadow-lg);
}

.game-card:hover .card-overlay {
    opacity: 1;
}

.card-icon {
    width: 60px;
    height: 60px;
    background-color: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 24px;
    transition: transform var(--transition-speed) var(--transition-ease),
                background-color var(--transition-speed) var(--transition-ease);
}

.game-card:hover .card-icon {
    transform: scale(1.1);
    background-color: var(--accent-color);
}

.game-card h3 {
    color: var(--primary-color);
    font-size: 1.4rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
    position: relative;
    z-index: 1;
}

.game-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.game-card .badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--primary-color);
    color: var(--text-white);
    padding: 0.3rem 0.7rem;
    border-radius: var(--border-radius-xl);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.game-card .new-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: var(--accent-color);
    color: var(--text-white);
    padding: 3px 10px;
    border-radius: var(--border-radius-xl);
    font-size: 0.8rem;
    font-weight: 500;
    animation: pulse 2s infinite;
    z-index: 10;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 153, 51, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(255, 153, 51, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 153, 51, 0);
    }
}

/* Botões e controles */
.btn {
    background-color: var(--primary-color);
    color: var(--text-white);
    border: none;
    padding: 0.7rem 1.5rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-ease),
                transform var(--transition-speed) var(--transition-ease);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 51, 102, 0.3);
}

.btn i {
    font-size: 0.9rem;
}

/* Contêineres de jogos */
.game-container {
    display: none;
    background-color: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-top: 2rem;
    box-shadow: var(--shadow-md);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-speed) var(--transition-ease),
                transform var(--transition-speed) var(--transition-ease);
}

.game-container.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--highlight-color);
    padding-bottom: 1rem;
}

.game-header h2 {
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.game-stats {
    display: flex;
    gap: 1rem;
}

.stat {
    background-color: var(--highlight-color);
    padding: 0.7rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.stat i {
    color: var(--primary-color);
}

.back-btn {
    background-color: var(--highlight-color);
    color: var(--text-secondary);
    border: none;
    padding: 0.7rem 1rem;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed) var(--transition-ease),
                color var(--transition-speed) var(--transition-ease);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.back-btn:hover {
    background-color: var(--primary-light);
    color: var(--text-white);
}

.game-tip {
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: var(--highlight-color);
    padding: 15px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    animation: slideUp 0.5s 0.5s both;
}

.game-tip i {
    color: var(--warning-color);
    font-size: 20px;
}

.game-tip p {
    color: var(--text-secondary);
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Caça-palavras */
.word-search-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.word-search-grid {
    display: grid;
    grid-template-columns: repeat(15, 2rem);
    grid-template-rows: repeat(15, 2rem);
    gap: 4px;
}

.word-search-cell {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--highlight-color);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
    user-select: none;
    box-shadow: var(--shadow-sm);
    transform: scale(1);
}

.word-search-cell:hover {
    background-color: #d0d6e0;
    transform: scale(1.05);
    z-index: 1;
}

.word-search-cell.selected {
    background-color: var(--accent-color);
    color: var(--text-white);
    box-shadow: 0 0 10px rgba(255,153,51,0.5);
    transform: scale(1.1);
    z-index: 2;
}

.word-search-cell.found {
    background-color: var(--success-color);
    color: var(--text-white);
    animation: bounce 0.5s;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.word-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
    justify-content: center;
}

.word-item {
    padding: 0.7rem 1rem;
    background-color: var(--highlight-color);
    border-radius: var(--border-radius);
    transition: all 0.3s ease;
    font-weight: 500;
}

.word-item.found {
    background-color: var(--success-color);
    color: var(--text-white);
    text-decoration: line-through;
    transform: scale(0.95);
}

/* Quiz */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
}

.question {
    background-color: var(--highlight-color);
    padding: 1.8rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-speed) var(--transition-ease);
}

.question:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.question h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-family: var(--font-heading);
    line-height: 1.4;
    font-size: 1.3rem;
}

.option {
    background-color: var(--bg-card);
    padding: 1.2rem;
    border-radius: var(--border-radius);
    border: 2px solid var(--highlight-color);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.option:hover {
    border-color: var(--primary-color);
    background-color: rgba(0, 51, 102, 0.05);
    transform: translateX(5px);
}

.option.selected {
    border-color: var(--primary-color);
    background-color: rgba(0, 51, 102, 0.1);
    padding-left: 40px;
}

.option.selected::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 15px;
    color: var(--primary-color);
}

.option.correct {
    border-color: var(--success-color);
    background-color: rgba(40, 167, 69, 0.1);
    padding-left: 40px;
    animation: correctPulse 1s;
}

.option.correct::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 15px;
    color: var(--success-color);
}

.option.incorrect {
    border-color: var(--danger-color);
    background-color: rgba(220, 53, 69, 0.1);
    padding-left: 40px;
    animation: incorrectShake 0.5s;
}

.option.incorrect::before {
    content: '\f00d';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    position: absolute;
    left: 15px;
    color: var(--danger-color);
}

@keyframes correctPulse {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

@keyframes incorrectShake {
    0%, 100% {
        transform: translateX(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-5px);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(5px);
    }
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
}

.feedback {
    margin-top: 1.5rem;
    padding: 1.2rem;
    border-radius: var(--border-radius);
    animation: fadeInUp 0.5s;
}

.feedback-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.feedback-icon {
    font-size: 20px;
}

.feedback.correct {
    background-color: rgba(40, 167, 69, 0.1);
    border-left: 4px solid var(--success-color);
}

.feedback.correct .feedback-icon::before {
    content: '\f058';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--success-color);
}

.feedback.incorrect {
    background-color: rgba(220, 53, 69, 0.1);
    border-left: 4px solid var(--danger-color);
}

.feedback.incorrect .feedback-icon::before {
    content: '\f057';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--danger-color);
}

.feedback-text {
    font-weight: 500;
    color: var(--text-primary);
}

.explanation {
    margin-top: 1rem;
    padding: 1rem;
    background-color: rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.5;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.quiz-results {
    text-align: center;
    padding: 2rem;
    border-radius: var(--border-radius);
    background-color: var(--highlight-color);
    margin-top: 2rem;
    animation: zoomIn 0.6s;
}

@keyframes zoomIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.quiz-results h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-family: var(--font-heading);
}

.results-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.score-display {
    text-align: center;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: conic-gradient(var(--primary-color) 0%, var(--accent-color) 0);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    position: relative;
    box-shadow: var(--shadow-md);
}

.score-circle::before {
    content: '';
    width: 100px;
    height: 100px;
    background-color: var(--highlight-color);
    border-radius: 50%;
    position: absolute;
}

.score-number {
    position: relative;
    font-size: 30px;
    font-weight: 700;
    color: var(--primary-color);
    font-family: var(--font-heading);
}

.stars-container {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.stars-container i {
    font-size: 30px;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.stars-container i.fas {
    color: var(--warning-color);
    animation: starPop 0.5s;
}

@keyframes starPop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

.result-message {
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 10px;
}

.results-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

/* Confetti animation */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 999;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    background-color: var(--confetti-color);
    opacity: 0.7;
    top: -10px;
    animation: confetti-fall linear, confetti-shake ease-in-out;
    animation-iteration-count: infinite, infinite;
}

@keyframes confetti-fall {
    0% {
        top: -10px;
    }
    100% {
        top: calc(100% + 10px);
    }
}

@keyframes confetti-shake {
    0% {
        transform: translateX(0) rotate(0deg);
    }
    25% {
        transform: translateX(10px) rotate(90deg);
    }
    50% {
        transform: translateX(-10px) rotate(180deg);
    }
    75% {
        transform: translateX(10px) rotate(270deg);
    }
    100% {
        transform: translateX(0) rotate(360deg);
    }
}

/* Footer */
footer {
    background-color: var(--bg-footer);
    color: var(--text-white);
    padding: 3rem 0 1.5rem;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
}

.footer-section h4 {
    color: var(--accent-color);
    margin-bottom: 1.2rem;
    font-family: var(--font-heading);
    position: relative;
    display: inline-block;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 40px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-section p {
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 0.8rem;
}

.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-ease);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.footer-section a:hover {
    color: var(--accent-color);
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all var(--transition-speed) var(--transition-ease);
}

.social-icon:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 2rem auto 0;
    padding: 1.5rem 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0.3rem 0;
}

/* Melhorias de acessibilidade */
:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Melhorias de performance */
.hardware-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Responsividade */
@media (max-width: 992px) {
    .container {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 2.2rem;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .results-actions .btn {
        width: 100%;
    }
}

@media (max-width: 768px) {
    header {
        padding: 1.2rem 1rem;
        flex-direction: column;
    }
    
    .header-buttons {
        margin-top: 15px;
    }
    
    .container {
        padding: 1rem;
    }
    
    .game-selection {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    
    .word-search-grid {
        grid-template-columns: repeat(15, 1.5rem);
        grid-template-rows: repeat(15, 1.5rem);
    }
    
    .word-search-cell {
        width: 1.5rem;
        height: 1.5rem;
        font-size: 0.8rem;
    }
    
    .game-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .game-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .modal-content {
        padding: 20px;
    }
    
    .profile-stats {
        grid-template-columns: 1fr;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quiz-controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .quiz-controls .btn {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    header p {
        font-size: 0.9rem;
    }
    
    .word-search-grid {
        grid-template-columns: repeat(15, 1.2rem);
        grid-template-rows: repeat(15, 1.2rem);
    }
    
    .word-search-cell {
        width: 1.2rem;
        height: 1.2rem;
        font-size: 0.7rem;
    }
    
    .filter-btn {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
    
    .game-tip {
        flex-direction: column;
        text-align: center;
    }
    
    .stars-container i {
        font-size: 24px;
    }
    
    .achievements-grid {
        grid-template-columns: 1fr;
    }
    
    .question h3 {
        font-size: 1.1rem;
    }
    
    .option {
        padding: 1rem;
    }
    
    .modal-content {
        width: 95%;
        padding: 15px;
    }
    
    .theme-switch-wrapper {
        top: 10px;
        right: 10px;
    }
}

/* Melhorias para dispositivos móveis */
@media (hover: none) {
    .game-card:hover {
        transform: none;
    }
    
    .option:hover {
        transform: none;
        background-color: inherit;
        border-color: var(--highlight-color);
    }
    
    .btn:hover {
        transform: none;
    }
    
    .social-icon:hover {
        transform: none;
    }
}

/* Suporte a telas maiores */
@media (min-width: 1400px) {
    .container {
        max-width: 1320px;
    }
    
    .game-selection {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
    
    header h1 {
        font-size: 3rem;
    }
    
    .quiz-container {
        max-width: 900px;
    }
}

/* Animações para theme changes */
.theme-transition {
    transition: background-color var(--transition-speed) var(--transition-ease), 
                color var(--transition-speed) var(--transition-ease), 
                border-color var(--transition-speed) var(--transition-ease);
}

/* Otimização para dispositivos com modo escuro */
@media (prefers-color-scheme: dark) {
    body:not([data-theme]) {
        --primary-color: #0055aa; 
        --primary-dark: #004488;
        --primary-light: #0066cc;
        --secondary-color: #333333;
        --highlight-color: #3a4252;
        
        --bg-color: #1a1a2e;
        --bg-card: #2a2a3e;
        --bg-footer: #0f0f1a;
        
        --text-primary: #e0e0e0;
        --text-secondary: #b0b0b0;
        --text-light: #808080;
    }
}

/* Print styles */
@media print {
    header, footer, .game-selection, .back-btn, .quiz-controls, 
    .theme-switch-wrapper, .settings-panel {
        display: none !important;
    }
    
    .container {
        padding: 0;
        margin: 0;
    }
    
    .game-container {
        box-shadow: none;
        padding: 0;
    }
    
    .question, .feedback {
        page-break-inside: avoid;
    }
    
    .quiz-results {
        page-break-before: always;
    }
    
    body, .modal-content, .game-container, .question {
        background-color: white !important;
        color: black !important;
    }
    
    * {
        box-shadow: none !important;
    }
}