:root {
    --cor-primaria: #6B46C1;
    --cor-secundaria: #9333EA;
    --cor-acento: #F59E0B;
    --cor-sucesso: #10B981;
    --cor-erro: #EF4444;
    --cor-fundo: #F3F4F6;
    --cor-texto: #1F2937;
    --cor-texto-claro: #6B7280;
    --cor-roxo: #8B5CF6;
    --cor-rosa: #EC4899;
    --cor-azul: #3B82F6;
    --cor-verde: #22C55E;
    
    --sombra-pequena: 0 2px 4px rgba(0, 0, 0, 0.1);
    --sombra-media: 0 4px 6px rgba(0, 0, 0, 0.1);
    --sombra-grande: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    --transicao-rapida: all 0.2s ease;
    --transicao-normal: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--cor-texto);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    background: rgba(255, 255, 255, 0.95);
    padding: 20px 0;
    box-shadow: var(--sombra-media);
    position: sticky;
    top: 0;
    z-index: 100;
}

header h1 {
    text-align: center;
    color: var(--cor-primaria);
    font-size: 2.5rem;
    margin-bottom: 10px;
}

header p {
    text-align: center;
    color: var(--cor-texto-claro);
    font-size: 1.1rem;
}

.logo-portugol {
    display: inline-block;
    background: linear-gradient(135deg, var(--cor-primaria), var(--cor-roxo));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: bold;
}

/* Navegação */
.nav-voltar {
    display: inline-block;
    padding: 10px 20px;
    background: var(--cor-primaria);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 20px;
    transition: var(--transicao-rapida);
}

.nav-voltar:hover {
    background: var(--cor-secundaria);
    transform: translateX(-5px);
}

/* Hero Section */
.hero {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    margin: 40px 0;
    box-shadow: var(--sombra-grande);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, var(--cor-primaria), var(--cor-roxo), var(--cor-rosa));
}

.hero h2 {
    font-size: 3rem;
    color: var(--cor-primaria);
    margin-bottom: 20px;
}

.hero p {
    font-size: 1.3rem;
    color: var(--cor-texto-claro);
    max-width: 700px;
    margin: 0 auto 30px;
}

.codigo-exemplo {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 20px;
    border-radius: 10px;
    text-align: left;
    font-family: 'Courier New', monospace;
    margin: 20px auto;
    max-width: 600px;
    box-shadow: var(--sombra-media);
}

.codigo-linha {
    margin: 5px 0;
}

.keyword {
    color: #569cd6;
}

.string {
    color: #ce9178;
}

.function {
    color: #dcdcaa;
}

.comment {
    color: #6a9955;
}

/* Grade de Cards */
.grade-topicos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.card-topico {
    background: white;
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--sombra-media);
    transition: var(--transicao-normal);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.card-topico::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--cor-primaria), var(--cor-roxo));
    transform: scaleX(0);
    transition: var(--transicao-normal);
}

.card-topico:hover {
    transform: translateY(-10px);
    box-shadow: var(--sombra-grande);
}

.card-topico:hover::before {
    transform: scaleX(1);
}

.card-topico-numero {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--cor-primaria), var(--cor-roxo));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.card-topico h3 {
    color: var(--cor-primaria);
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.card-topico p {
    color: var(--cor-texto-claro);
    margin-bottom: 20px;
}

.btn-comecar {
    display: inline-block;
    padding: 12px 25px;
    background: var(--cor-primaria);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transicao-rapida);
    text-decoration: none;
}

.btn-comecar:hover {
    background: var(--cor-secundaria);
    transform: scale(1.05);
}

/* Seção de Jogos */
.secao-jogos {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    margin: 40px 0;
    box-shadow: var(--sombra-grande);
}

.secao-jogos h2 {
    text-align: center;
    color: var(--cor-primaria);
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.grade-jogos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.btn-jogo {
    padding: 30px;
    background: linear-gradient(135deg, var(--cor-primaria), var(--cor-roxo));
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 1.3rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transicao-normal);
    box-shadow: var(--sombra-media);
    text-align: center;
}

.btn-jogo:hover {
    transform: scale(1.05);
    box-shadow: var(--sombra-grande);
}

.icone-jogo {
    font-size: 3rem;
    display: block;
    margin-bottom: 15px;
}

/* Página de Tópico */
.conteudo-topico {
    background: white;
    border-radius: 15px;
    padding: 40px;
    margin: 20px 0;
    box-shadow: var(--sombra-media);
}

.conteudo-topico h2 {
    color: var(--cor-primaria);
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.conteudo-topico h3 {
    color: var(--cor-secundaria);
    font-size: 1.8rem;
    margin: 30px 0 15px;
}

.conteudo-topico p {
    font-size: 1.1rem;
    margin-bottom: 15px;
    line-height: 1.8;
}

.exemplo-box {
    background: #f8fafc;
    border-left: 4px solid var(--cor-primaria);
    padding: 20px;
    margin: 20px 0;
    border-radius: 8px;
}

.exemplo-box h4 {
    color: var(--cor-primaria);
    margin-bottom: 10px;
}

.codigo-portugol {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 20px;
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    overflow-x: auto;
    margin: 15px 0;
    line-height: 1.5;
}

.lista-exemplos {
    list-style: none;
    padding-left: 0;
}

.lista-exemplos li {
    padding: 10px 0 10px 30px;
    position: relative;
}

.lista-exemplos li::before {
    content: '▶';
    color: var(--cor-primaria);
    position: absolute;
    left: 0;
}

/* Container de Jogo */
.jogo-container {
    background: white;
    border-radius: 15px;
    padding: 40px;
    margin: 20px 0;
    box-shadow: var(--sombra-media);
}

.jogo-header {
    text-align: center;
    margin-bottom: 30px;
}

.jogo-header h2 {
    color: var(--cor-primaria);
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.jogo-instrucoes {
    background: #f0f9ff;
    border-left: 4px solid var(--cor-azul);
    padding: 20px;
    margin: 20px 0;
    border-radius: 8px;
}

.painel-jogo {
    margin: 30px 0;
}

.placar {
    display: flex;
    justify-content: space-around;
    background: linear-gradient(135deg, var(--cor-primaria), var(--cor-roxo));
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.info-placar {
    text-align: center;
}

.info-placar h3 {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 5px;
}

.info-placar p {
    font-size: 2rem;
    font-weight: bold;
}

/* Drag and Drop */
.area-drag-drop {
    display: flex;
    gap: 30px;
    margin: 30px 0;
}

.coluna-opcoes, .coluna-codigo {
    flex: 1;
    min-height: 300px;
}

.coluna-opcoes h3, .coluna-codigo h3 {
    color: var(--cor-primaria);
    margin-bottom: 15px;
}

.drag-item {
    background: white;
    border: 2px solid var(--cor-primaria);
    padding: 15px;
    margin: 10px 0;
    border-radius: 8px;
    cursor: grab;
    transition: var(--transicao-rapida);
}

.drag-item:hover {
    background: #f0f9ff;
    transform: scale(1.02);
}

.drag-item.dragging {
    opacity: 0.5;
    cursor: grabbing;
}

.drop-zone {
    background: #f8fafc;
    border: 2px dashed var(--cor-primaria);
    padding: 20px;
    min-height: 60px;
    border-radius: 8px;
    margin: 10px 0;
    transition: var(--transicao-rapida);
}

.drop-zone.drag-over {
    background: #e0f2fe;
    border-color: var(--cor-azul);
}

.drop-zone.correto {
    background: #d1fae5;
    border-color: var(--cor-sucesso);
}

.drop-zone.incorreto {
    background: #fee2e2;
    border-color: var(--cor-erro);
}

/* Botões de Ação */
.botoes-acao {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin: 30px 0;
}

.btn-verificar, .btn-proximo, .btn-reiniciar {
    padding: 15px 30px;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transicao-rapida);
}

.btn-verificar {
    background: var(--cor-primaria);
    color: white;
}

.btn-verificar:hover {
    background: var(--cor-secundaria);
    transform: scale(1.05);
}

.btn-proximo {
    background: var(--cor-sucesso);
    color: white;
}

.btn-proximo:hover {
    background: #059669;
    transform: scale(1.05);
}

.btn-reiniciar {
    background: var(--cor-acento);
    color: white;
}

.btn-reiniciar:hover {
    background: #d97706;
    transform: scale(1.05);
}

/* Feedback */
.feedback {
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
    text-align: center;
    font-size: 1.2rem;
    font-weight: bold;
    display: none;
}

.feedback.sucesso {
    background: #d1fae5;
    color: #065f46;
    border: 2px solid var(--cor-sucesso);
    display: block;
}

.feedback.erro {
    background: #fee2e2;
    color: #991b1b;
    border: 2px solid var(--cor-erro);
    display: block;
}

/* Animações */
@keyframes flutuar {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes girar {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pulsar {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

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

@keyframes brilhar {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animacao-flutuar {
    animation: flutuar 3s ease-in-out infinite;
}

.animacao-girar {
    animation: girar 20s linear infinite;
}

.animacao-pulsar {
    animation: pulsar 2s ease-in-out infinite;
}

.animacao-aparecer {
    animation: aparecer 0.5s ease-out;
}

/* Estrelas de fundo */
.estrelas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.estrela {
    position: absolute;
    width: 3px;
    height: 3px;
    background: white;
    border-radius: 50%;
    animation: brilhar 3s ease-in-out infinite;
}

/* Confetes */
.confete {
    position: fixed;
    width: 10px;
    height: 10px;
    pointer-events: none;
    z-index: 1000;
    animation: cair 3s linear forwards;
}

@keyframes cair {
    to {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Responsividade */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .grade-topicos {
        grid-template-columns: 1fr;
    }
    
    .area-drag-drop {
        flex-direction: column;
    }
    
    .botoes-acao {
        flex-direction: column;
    }
    
    .botoes-acao button {
        width: 100%;
    }
}

/* Utilitários */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.oculto {
    display: none !important;
}