/**
 * EducaCerto - Estilos principais
 * Plataforma educativa para crianças de 3 a 6 anos
 */

/* ==================== VARIÁVEIS CSS ==================== */
:root {
    /* Cores principais - Tema Claro Infantil com Azul Céu */
    --bg-color: #87CEEB;
    --container-color: #FFFFFF;
    --title-color: #FF1744;
    --text-color: #2C3E50;
    
    /* Paleta de cores fortes e vibrantes para botões */
    --c-primary: #FFD700;
    --c-primary-shadow: #FFA500;
    --c-secondary: #00E676;
    --c-secondary-shadow: #00C853;
    --c-tertiary: #FF4081;
    --c-tertiary-shadow: #F50057;
    --c-quaternary: #FF6F00;
    --c-quaternary-shadow: #E65100;
    --c-quinary: #AA00FF;
    --c-quinary-shadow: #7B1FA2;
    --c-senary: #2979FF;
    --c-senary-shadow: #2962FF;
    --c-septenary: #00E5FF;
    --c-septenary-shadow: #00B8D4;
    --c-neutral: #F5F5F5;
    --c-neutral-shadow: #E0E0E0;

    /* Cores de feedback vibrantes */
    --correct-color: #00E676;
    --incorrect-color: #FF1744;
    
    /* Fontes */
    --font-main: 'Nunito', sans-serif;
    --font-title: 'Fredoka One', cursive;

    /* Propriedades reutilizáveis */
    --border-radius: 16px;
    --transition-speed: 0.2s;
    --shadow-main: 0 10px 0 #FFD700, 0 15px 30px rgba(0, 0, 0, 0.2);
}

/* ==================== RESET E BASE ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Skip Link para acessibilidade */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--title-color);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 0 0 8px 0;
    z-index: 100;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 3px solid #FFD93D;
    outline-offset: 2px;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
    background-image: 
        radial-gradient(circle at 15% 25%, rgba(255, 255, 255, 0.4) 0%, transparent 25%),
        radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.35) 0%, transparent 20%),
        radial-gradient(circle at 70% 75%, rgba(255, 255, 255, 0.3) 0%, transparent 30%),
        radial-gradient(circle at 25% 85%, rgba(255, 255, 255, 0.35) 0%, transparent 25%);
}

/* Classe para elementos visualmente ocultos mas acessíveis */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==================== CARD PRINCIPAL ==================== */
.card {
    width: 100%;
    max-width: 420px;
    background-color: var(--container-color);
    border-radius: 24px;
    box-shadow: var(--shadow-main);
    padding: 2rem;
    text-align: center;
    border: 6px solid #FF4081;
    position: relative;
}

/* ==================== TELAS E TRANSIÇÕES ==================== */
.screen {
    transition: opacity var(--transition-speed) ease-out, 
                transform var(--transition-speed) ease-out;
}

.screen.hidden {
    opacity: 0;
    transform: scale(0.98);
    pointer-events: none;
    position: absolute;
    left: -9999px;
}

/* ==================== TIPOGRAFIA ==================== */
.game-title {
    font-family: var(--font-title);
    color: var(--title-color);
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.05);
    margin-bottom: 0.5rem;
    font-size: 3rem;
    line-height: 1.2;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.game-subtitle {
    font-size: 2.2rem;
}

/* Classe para esconder visualmente mas manter acessível para leitores de tela */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* ==================== CONTAINERS E LAYOUTS ==================== */
.game-choice-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.game-choice-container .btn {
    animation: popIn 0.5s ease-out backwards;
}

.game-choice-container .btn:nth-child(2) { animation-delay: 0.05s; }
.game-choice-container .btn:nth-child(3) { animation-delay: 0.1s; }
.game-choice-container .btn:nth-child(4) { animation-delay: 0.15s; }
.game-choice-container .btn:nth-child(5) { animation-delay: 0.2s; }
.game-choice-container .btn:nth-child(6) { animation-delay: 0.25s; }
.game-choice-container .btn:nth-child(7) { animation-delay: 0.3s; }

.options-grid {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

/* ==================== BARRA DE PROGRESSO ==================== */
.progress-container {
    width: 100%;
    margin: 1rem 0;
    padding: 0.5rem 0;
}

.progress-wrapper {
    width: 100%;
    height: 30px;
    background-color: #E0E0E0;
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #FFD700 0%, #FFA500 50%, #FF6F00 100%);
    border-radius: 15px;
    transition: width 0.4s ease-in-out;
    position: relative;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.5);
}

.progress-bar::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.3) 0%, transparent 100%);
    border-radius: 15px 15px 0 0;
}

.progress-text {
    text-align: center;
    font-family: var(--font-title);
    font-size: 1.1rem;
    color: var(--text-color);
    margin-top: 0.5rem;
    font-weight: bold;
}

.game-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    gap: 1rem;
}

/* ==================== CHALLENGE BOX ==================== */
.challenge-box {
    font-family: var(--font-title);
    font-size: 2.4rem;
    letter-spacing: 4px;
    padding: 1rem;
    margin: 1rem 0 1.5rem 0;
    border: 5px dashed #FFD700;
    border-radius: var(--border-radius);
    background-color: #FFFEF0;
    color: #1A237E;
    min-height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform var(--transition-speed) ease-in-out, 
                border-color var(--transition-speed);
    word-break: break-word;
}

.challenge-box.correct {
    transform: scale(1.05);
    border-color: var(--correct-color);
}

.challenge-box.incorrect {
    animation: shake 0.5s;
    border-color: var(--incorrect-color);
}

/* ==================== BOTÕES ==================== */
.btn {
    font-family: var(--font-title);
    font-size: 1.5rem;
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.1s ease-in-out;
    position: relative;
    user-select: none;
    text-decoration: none;
    display: inline-block;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

/* Melhor visibilidade do foco para acessibilidade */
.btn:focus,
.btn:focus-visible {
    outline: 4px solid #FF1744;
    outline-offset: 4px;
    box-shadow: 0 0 0 6px rgba(255, 215, 0, 0.6);
}

.btn:focus:not(:focus-visible) {
    outline: none;
    box-shadow: none;
}

/* Hover e Active states */
.btn:hover:not(:disabled) {
    transform: translateY(-2px);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

/* Variantes de botões */
.btn--primary {
    background-color: var(--c-primary);
    box-shadow: 0 6px 0 var(--c-primary-shadow);
}

.btn--primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 0 var(--c-primary-shadow);
}

.btn--primary:active:not(:disabled) {
    transform: translateY(2px);
    box-shadow: 0 4px 0 var(--c-primary-shadow);
}

.btn--secondary {
    background-color: var(--c-secondary);
    box-shadow: 0 6px 0 var(--c-secondary-shadow);
}

.btn--secondary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-secondary-shadow);
}

.btn--secondary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-secondary-shadow);
}

.btn--tertiary {
    background-color: var(--c-tertiary);
    box-shadow: 0 6px 0 var(--c-tertiary-shadow);
}

.btn--tertiary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-tertiary-shadow);
}

.btn--tertiary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-tertiary-shadow);
}

.btn--quaternary {
    background-color: var(--c-quaternary);
    box-shadow: 0 6px 0 var(--c-quaternary-shadow);
}

.btn--quaternary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-quaternary-shadow);
}

.btn--quaternary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-quaternary-shadow);
}

.btn--quinary {
    background-color: var(--c-quinary);
    box-shadow: 0 6px 0 var(--c-quinary-shadow);
}

.btn--quinary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-quinary-shadow);
}

.btn--quinary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-quinary-shadow);
}

.btn--senary {
    background-color: var(--c-senary);
    box-shadow: 0 6px 0 var(--c-senary-shadow);
}

.btn--senary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-senary-shadow);
}

.btn--senary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-senary-shadow);
}

.btn--septenary {
    background-color: var(--c-septenary);
    box-shadow: 0 6px 0 var(--c-septenary-shadow);
}

.btn--septenary:hover:not(:disabled) {
    box-shadow: 0 8px 0 var(--c-septenary-shadow);
}

.btn--septenary:active:not(:disabled) {
    box-shadow: 0 4px 0 var(--c-septenary-shadow);
}

.btn--neutral {
    background-color: var(--c-neutral);
    box-shadow: 0 4px 0 var(--c-neutral-shadow);
    font-size: 1rem;
    padding: 0.5rem 1rem;
}

/* Botões de opção */
.btn--option {
    min-width: 4rem;
    min-height: 4rem;
    font-size: 3rem;
    padding: 0.5rem;
}

.btn--option:hover:not(:disabled) {
    transform: translateY(0) scale(1.08);
}

.btn--option.color {
    border: 3px solid #eee;
}

.btn--option svg,
.btn--option .emoji {
    max-width: 4rem;
    pointer-events: none;
    font-size: 3rem;
    line-height: 1;
}

/* ==================== FEEDBACK E SCORE ==================== */
.feedback-area {
    font-size: 1.5rem;
    font-weight: bold;
    min-height: 30px;
    margin-bottom: 1rem;
    transition: transform 0.2s;
}

.feedback-area.correct {
    color: var(--correct-color);
    animation: popIn 0.3s ease;
}

.feedback-area.incorrect {
    color: var(--incorrect-color);
}

.score-display,
.final-score {
    font-size: 1.25rem;
    font-weight: bold;
    color: #777;
    transition: transform 0.2s;
}

.score-display.updated {
    animation: scoreUpdate 0.4s ease-out;
}

.final-score {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

/* ==================== CONTROLES DE ÁUDIO ==================== */
.audio-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.8rem;
    padding: 0.5rem;
    transition: transform 0.2s;
}

.audio-toggle:hover {
    transform: scale(1.1);
}

.audio-toggle:active {
    transform: scale(0.95);
}

/* ==================== INFORMAÇÕES DO PROJETO ==================== */
.project-info {
    max-width: 550px;
    text-align: center;
    margin: 2rem 1rem 0 1rem;
    color: #4a4a4a;
    font-size: 1rem;
    line-height: 1.6;
}

/* ==================== FOOTER ==================== */
footer {
    text-align: center;
    padding: 2rem 1rem;
    margin-top: 2rem;
    color: #666;
    font-size: 0.9rem;
}

footer nav {
    margin-bottom: 1rem;
}

footer nav a {
    margin: 0 0.5rem;
    color: #4a4a4a;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

footer nav a:hover {
    color: var(--title-color);
    text-decoration: underline;
}

footer nav a:focus {
    outline: 2px solid var(--title-color);
    outline-offset: 4px;
    border-radius: 4px;
}

footer p {
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

/* Botão voltar ao menu */
.back-to-menu {
    display: inline-block;
    margin: 2rem 0 1rem 0;
    padding: 1rem 2rem;
    background-color: var(--c-primary);
    color: var(--text-color);
    text-decoration: none;
    border-radius: 12px;
    font-family: var(--font-title);
    font-size: 1.3rem;
    font-weight: 700;
    box-shadow: 0 6px 0 var(--c-primary-shadow);
    transition: all 0.1s ease-in-out;
    text-align: center;
}

.back-to-menu:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 0 var(--c-primary-shadow);
}

.back-to-menu:active {
    transform: translateY(2px);
    box-shadow: 0 4px 0 var(--c-primary-shadow);
}

.back-to-menu:focus {
    outline: 4px solid var(--title-color);
    outline-offset: 4px;
    box-shadow: 0 0 0 6px rgba(255, 215, 0, 0.6);
}

/* ==================== ANIMAÇÕES ==================== */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

@keyframes popIn {
    0% { transform: scale(0.8); }
    80% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

@keyframes scoreUpdate {
    0%, 100% { transform: scale(1); }
    50% { 
        transform: scale(1.2); 
        color: var(--correct-color); 
    }
}

/* ==================== MEDIA QUERIES ==================== */
@media (max-width: 480px) {
    .game-title {
        font-size: 2.5rem;
    }
    
    .game-subtitle {
        font-size: 1.8rem;
    }
    
    .challenge-box {
        font-size: 2.2rem;
        min-height: 100px;
        letter-spacing: 2px;
    }
    
    .btn {
        font-size: 1.3rem;
        padding: 0.8rem 1.5rem;
    }
    
    .btn--option {
        font-size: 2.5rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .game-footer {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* ==================== ACESSIBILIDADE ==================== */

/* Reduzir animações para usuários que preferem menos movimento */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .btn:hover:not(:disabled) {
        transform: none;
    }
    
    .challenge-box.correct {
        transform: none;
    }
}

/* Alto contraste para melhor legibilidade */
@media (prefers-contrast: high) {
    :root {
        --text-color: #000;
        --bg-color: #fff;
    }
    
    .btn {
        border: 2px solid #000;
    }
    
    .challenge-box {
        border-width: 3px;
        border-style: solid;
    }
}

/* Suporte para impressão */
@media print {
    body {
        background: white;
    }
    
    .audio-toggle,
    .btn:not(.btn--option) {
        display: none;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}