/* ===========================================
   APP BETO CARVALHO - CSS COMPLETO
   =========================================== */
   
/* ===========================================
   FIX DO SLIDER (Adicione ao final do app.css)
   =========================================== */

/* O Container segura o slider dentro do layout */
.slider-container {
    width: 100%;
    max-width: 100%; /* Garante que não estoure a largura */
    height: 400px;   /* Altura fixa para evitar pulos no layout */
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden; /* Corta qualquer imagem que tente sair */
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    background-color: var(--bg-card); /* Fundo caso a imagem demore a carregar */
}

/* Ajuste para mobile */
@media (max-width: 768px) {
    .slider-container {
        height: 250px;
    }
}

.slider {
    width: 100%;
    height: 100%;
    position: relative;
}

/* O Slide individual */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    z-index: 1;
    display: flex; /* Centraliza conteúdo se não tiver imagem */
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
    z-index: 2;
}

/* Imagem controlada */
.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* A MÁGICA: Preenche sem esticar e sem quebrar layout */
    display: block;
}

/* Conteúdo/Texto sobre o slide */
.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 40px 20px 20px;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: #fff;
    z-index: 3;
}

.slide-content h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    color: #fff;
}

.slide-content p {
    font-size: 1rem;
    margin-bottom: 15px;
    opacity: 0.9;
    color: #e2e8f0;
}

/* Controles */
.slider-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s;
}

.slider-arrow:hover { background: var(--primary); }
.slider-prev { left: 10px; }
.slider-next { right: 10px; }

.slider-dots {
    position: absolute;
    bottom: 15px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s;
}

.slider-dot.active {
    background: var(--primary);
    transform: scale(1.2);
}

/* Reset e Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===========================================
   FIX DOS CARDS (GRID SYSTEM)
   =========================================== */

/* Container da Grade de Cards */
.cards-grid {
    display: grid;
    /* Cria colunas automáticas: Mínimo 280px, Máximo 1 fração da tela */
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px; /* Espaço entre os cards */
    margin-top: 24px;
    width: 100%;
}

/* O Card em si */
.card-item {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column; /* Garante que o rodapé do card fique embaixo */
}

.card-item:hover {
    transform: translateY(-5px); /* Efeito de "flutuar" ao passar o mouse */
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    border-color: var(--primary);
}

/* Imagem do Card */
.card-thumb {
    width: 100%;
    height: 160px;
    position: relative;
    overflow: hidden;
}

.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.card-item:hover .card-thumb img {
    transform: scale(1.05); /* Zoom suave na imagem */
}

/* Etiquetas/Badges (ex: "Premium", "Novo") */
.card-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: bold;
    padding: 4px 10px;
    border-radius: 20px;
    z-index: 2;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

/* Corpo do Card */
.card-body {
    padding: 20px;
    flex: 1; /* Empurra o rodapé para baixo se tiver pouco texto */
    display: flex;
    flex-direction: column;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3; /* Limita a 3 linhas de texto */
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Rodapé do Card (Botão) */
.card-footer {
    padding: 0 20px 20px;
    margin-top: auto;
}

.btn-card {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--bg-card-hover);
    color: var(--text-primary);
    padding: 10px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
    border: 1px solid rgba(255,255,255,0.05);
}

.btn-card:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Responsivo para Celulares Pequenos */
@media (max-width: 480px) {
    .cards-grid {
        grid-template-columns: 1fr; /* 1 coluna total no mobile */
    }
}

/* vvvvvvvvvvvvvvvvvv*/

/* ===========================================
   ESTILO DOS QUIZ CARDS (PREMIUM)
   =========================================== */

/* Grid Responsivo */
.quiz-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); /* Cards um pouco mais largos */
    gap: 24px;
    margin-bottom: 40px;
}

/* O Card Base */
.quiz-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.quiz-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.4);
    border-color: var(--primary);
}

/* Área da Imagem */
.quiz-card-image {
    height: 180px;
    width: 100%;
    position: relative;
    overflow: hidden;
    background: var(--bg-card-hover);
}

.quiz-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.quiz-card:hover .quiz-card-image img {
    transform: scale(1.08); /* Zoom suave na imagem */
}

/* Placeholder se não tiver imagem */
.quiz-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(45deg, var(--bg-card-hover), var(--bg-dark));
}
.quiz-card-placeholder i {
    font-size: 3rem;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Badges e Etiquetas sobre a imagem */
.quiz-card-badges {
    position: absolute;
    top: 12px;
    left: 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 2;
}

.badge-difficulty, .badge-category {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: 20px;
    color: #fff;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.3);
    backdrop-filter: blur(4px);
}

.badge-category {
    background: rgba(0,0,0,0.6); /* Fundo escuro translúcido para categoria */
    border: 1px solid rgba(255,255,255,0.1);
}

/* Ícones Flutuantes (Premium e Favorito) */
.quiz-card-premium {
    position: absolute;
    top: 12px;
    right: 12px;
    background: #F59E0B; /* Dourado */
    color: #fff;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    z-index: 2;
    box-shadow: 0 2px 5px rgba(0,0,0,0.3);
}

.quiz-card-favorite {
    position: absolute;
    bottom: -18px; /* Fica "pendurado" entre a imagem e o texto */
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    transition: all 0.2s;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
}

.quiz-card-favorite:hover {
    color: var(--danger);
    transform: scale(1.1);
}

/* Corpo do Card */
.quiz-card-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-top: 24px; /* Espaço extra por causa do botão de favorito */
}

/* Metadados (Tempo e Qtd) */
.quiz-card-meta {
    display: flex;
    gap: 12px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.quiz-card-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Título */
.quiz-card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    line-height: 1.4;
}

/* Avatares dos Usuários */
.quiz-card-users {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.user-avatars {
    display: flex;
    margin-right: 8px;
}

.user-avatar-mini {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
    background: var(--bg-card-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    margin-left: -8px; /* Sobreposição */
}

.user-avatar-mini:first-child { margin-left: 0; }

.user-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.badge-enrolled {
    margin-left: auto; /* Empurra para a direita */
    font-size: 0.7rem;
    color: var(--primary);
    background: rgba(16, 185, 129, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
}

/* Ações (Botões) */
.quiz-card-actions {
    margin-top: auto;
    display: grid;
    grid-template-columns: 1fr 1fr; /* Dois botões lado a lado */
    gap: 10px;
}

.quiz-card-actions .btn {
    font-size: 0.8rem;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
}

/* Responsivo Mobile */
@media (max-width: 480px) {
    .quiz-cards-grid {
        grid-template-columns: 1fr; /* Coluna única no celular */
    }
    
    .quiz-card-actions {
        grid-template-columns: 1fr; /* Botões empilhados no celular */
    }
}

/* outra */

/* ===========================================
   ESTATÍSTICAS DO USUÁRIO (STATS CARDS)
   =========================================== */

.stats-grid {
    display: grid;
    /* Cria colunas flexíveis: No PC ficam 4, no celular ajusta */
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
    border-color: var(--border-color); /* Mantém sutileza */
}

/* Círculo do Ícone */
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px; /* Quadrado arredondado moderno */
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

/* Cores específicas para cada tipo de stat */
.stat-icon.warning { background: rgba(245, 158, 11, 0.15); color: #F59E0B; } /* Pontos (Ouro) */
.stat-icon.info    { background: rgba(59, 130, 246, 0.15); color: #3B82F6; }  /* Nível (Azul) */
.stat-icon.purple  { background: rgba(139, 92, 246, 0.15); color: #8B5CF6; }  /* Quizzes (Roxo) */
.stat-icon.success { background: rgba(16, 185, 129, 0.15); color: #10B981; }  /* Acertos (Verde) */

/* Textos */
.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
}

/* Ajuste Mobile */
@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr 1fr; /* 2 colunas no celular fica melhor que 1 */
    }
    .stat-card {
        flex-direction: column; /* Ícone em cima, texto embaixo no mobile */
        align-items: flex-start;
        padding: 15px;
        gap: 10px;
    }
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    .stat-value {
        font-size: 1.25rem;
    }
}

/* ===========================================
   CTA PREMIUM (BANNER DOURADO)
   =========================================== */

.premium-cta {
    /* Fundo escuro com um toque de dourado degradê */
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.15) 0%, var(--bg-card) 60%);
    border: 1px solid rgba(245, 158, 11, 0.4); /* Borda dourada sutil */
    border-radius: var(--radius-md);
    padding: 24px 30px;
    margin-bottom: 40px; /* Espaço para o próximo elemento */
    
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.1); /* Sombra amarela suave */
    transition: transform 0.3s ease;
}

.premium-cta:hover {
    transform: scale(1.01); /* Leve "respiro" ao passar o mouse */
    border-color: #F59E0B; /* Borda fica mais forte */
}

/* Ícone da Coroa */
.premium-cta-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: white;
    box-shadow: 0 4px 10px rgba(245, 158, 11, 0.4);
    flex-shrink: 0; /* Não deixa o ícone esmagar */
}

/* Texto */
.premium-cta-content {
    flex: 1; /* Ocupa o espaço do meio */
}

.premium-cta-content h3 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 4px;
    /* Efeito de texto dourado */
    background: linear-gradient(to right, #F59E0B, #FCD34D);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.premium-cta-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

/* Botão Específico do CTA */
.premium-cta .btn-warning {
    background: #F59E0B;
    color: #0F172A; /* Texto escuro para contraste no amarelo */
    font-weight: 700;
    padding: 12px 24px;
    border-radius: 50px; /* Botão bem redondo */
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    border: none;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
    transition: all 0.3s;
    white-space: nowrap; /* Não quebra o texto do botão */
}

.premium-cta .btn-warning:hover {
    background: #D97706;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

/* Responsivo Mobile */
@media (max-width: 600px) {
    .premium-cta {
        flex-direction: column;
        text-align: center;
        padding: 24px 20px;
    }
    
    .premium-cta-content {
        margin-bottom: 16px;
    }
    
    .premium-cta .btn-warning {
        width: 100%; /* Botão largura total no celular */
    }
}

:root {
    --primary: #10B981;
    --primary-dark: #059669;
    --secondary: #3B82F6;
    --accent: #F59E0B;
    --danger: #EF4444;
    --purple: #8B5CF6;
    
    --bg-dark: #0F172A;
    --bg-card: #1E293B;
    --bg-card-hover: #334155;
    --bg-input: #334155;
    
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    --border-color: rgba(255,255,255,0.1);
    --shadow: 0 4px 20px rgba(0,0,0,0.3);
    
    --sidebar-width: 260px;
    --header-height: 60px;
    --bottom-nav-height: 70px;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }

/* Layout Principal */
.app-container { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.user-info { display: flex; align-items: center; gap: 12px; }

.user-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: white;
}

.user-details h3 { font-size: 1rem; font-weight: 600; }
.user-details p { font-size: 0.75rem; color: var(--text-secondary); }

.sidebar-nav { flex: 1; padding: 16px 0; overflow-y: auto; }
.nav-section { margin-bottom: 8px; }
.nav-section-title {
    padding: 8px 20px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    transition: all 0.2s;
    cursor: pointer;
    border-left: 3px solid transparent;
}

.nav-item:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.nav-item.active { background: rgba(16, 185, 129, 0.15); color: var(--primary); border-left-color: var(--primary); }
.nav-item i { width: 20px; text-align: center; font-size: 1rem; }
.nav-item span { font-size: 0.9rem; font-weight: 500; }

/* Main Content */
.main-content { flex: 1; margin-left: var(--sidebar-width); min-height: 100vh; display: flex; flex-direction: column; }

/* Header */
.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 50;
}

.header-title { font-size: 1.125rem; font-weight: 600; }
.header-actions { display: flex; align-items: center; gap: 16px; }

.header-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-input);
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.header-btn:hover { background: var(--bg-card-hover); color: var(--text-primary); }
.menu-toggle { display: none; }

/* Page Content */
.page-content { flex: 1; padding: 24px; padding-bottom: calc(var(--bottom-nav-height) + 24px); }

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 { font-size: 1rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.card-body { padding: 20px; }

/* Welcome Banner */
.welcome-banner {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-xl);
    padding: 24px;
    margin-bottom: 24px;
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
}

.welcome-banner h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 8px; position: relative; }
.welcome-banner p { color: rgba(255,255,255,0.9); margin-bottom: 16px; position: relative; }

/* Quick Actions Grid */
.quick-actions { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }

.quick-action-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.quick-action-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--primary); }

.quick-action-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.5rem;
    color: white;
}

.quick-action-icon.quiz { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }
.quick-action-icon.caca { background: linear-gradient(135deg, var(--secondary), #1D4ED8); }
.quick-action-icon.videos { background: linear-gradient(135deg, var(--danger), #DC2626); }
.quick-action-icon.ranking { background: linear-gradient(135deg, var(--accent), #D97706); }

.quick-action-card h3 { font-size: 0.95rem; font-weight: 600; margin-bottom: 4px; }
.quick-action-card p { font-size: 0.75rem; color: var(--text-secondary); }

/* Stats Grid */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 24px; }

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 20px;
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.stat-label { font-size: 0.8rem; color: var(--text-secondary); }

/* Section Header */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; }
.section-title { font-size: 1.125rem; font-weight: 600; display: flex; align-items: center; gap: 10px; }
.section-link { color: var(--primary); font-size: 0.875rem; font-weight: 500; display: flex; align-items: center; gap: 4px; }
.section-link:hover { text-decoration: underline; }

/* Quiz Grid */
.quiz-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; margin-bottom: 32px; }

.quiz-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.quiz-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.3); border-color: var(--primary); }

.quiz-card-image { position: relative; height: 180px; overflow: hidden; }
.quiz-card-image img { width: 100%; height: 100%; object-fit: cover; }

.quiz-card-image .placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1E293B, #334155);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: var(--text-muted);
}

.quiz-card-badges { position: absolute; top: 12px; left: 12px; right: 12px; display: flex; justify-content: space-between; align-items: flex-start; }

.badge { padding: 6px 12px; border-radius: 20px; font-size: 0.7rem; font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.badge-difficulty { background: rgba(0,0,0,0.7); color: white; }
.badge-difficulty.facil { background: var(--primary); }
.badge-difficulty.medio { background: var(--accent); }
.badge-difficulty.dificil { background: var(--danger); }
.badge-category { background: rgba(0,0,0,0.7); color: white; }

.quiz-card-favorite {
    position: absolute;
    bottom: 12px;
    left: 12px;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.quiz-card-favorite:hover { background: white; transform: scale(1.1); }
.quiz-card-favorite i { color: var(--text-muted); }
.quiz-card-favorite.active i { color: var(--danger); }

.quiz-card-content { padding: 16px; }
.quiz-card-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 8px; font-size: 0.8rem; color: var(--text-secondary); }
.quiz-card-meta span { display: flex; align-items: center; gap: 4px; }
.quiz-card-title { font-size: 1rem; font-weight: 600; margin-bottom: 12px; color: var(--text-primary); }

.quiz-card-users { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.user-avatars { display: flex; }

.user-avatars .avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: 2px solid var(--bg-card);
    margin-left: -8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: white;
}

.user-avatars .avatar:first-child { margin-left: 0; }
.user-count { font-size: 0.75rem; color: var(--text-secondary); }
.quiz-card-status { font-size: 0.75rem; color: var(--text-secondary); padding: 4px 12px; background: var(--bg-input); border-radius: 20px; }
.quiz-card-actions { display: flex; gap: 12px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    text-decoration: none;
}

.btn-primary { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: white; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: white; }
.btn-secondary { background: var(--bg-input); color: var(--text-primary); }
.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-block { width: 100%; }

/* Premium Lock */
.premium-lock {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    opacity: 0;
    transition: opacity 0.3s;
}

.quiz-card:hover .premium-lock { opacity: 1; }
.premium-lock i { font-size: 2rem; color: var(--accent); margin-bottom: 8px; }
.premium-lock span { font-size: 0.875rem; font-weight: 600; }

/* Premium Banner */
.premium-banner {
    background: linear-gradient(135deg, var(--purple), #6D28D9);
    border-radius: var(--radius-xl);
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.premium-banner-content h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 4px; display: flex; align-items: center; gap: 8px; }
.premium-banner-content p { color: rgba(255,255,255,0.8); font-size: 0.9rem; }

/* Premium Modal */
.premium-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.premium-modal.active { opacity: 1; visibility: visible; }

.premium-modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 32px;
    max-width: 400px;
    width: 90%;
    text-align: center;
}

.premium-modal-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent), #D97706);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    color: white;
}

.premium-modal h3 { font-size: 1.5rem; margin-bottom: 8px; }
.premium-modal p { color: var(--text-secondary); margin-bottom: 20px; }
.premium-features { text-align: left; margin-bottom: 24px; list-style: none; }
.premium-features li { display: flex; align-items: center; gap: 10px; padding: 8px 0; color: var(--text-secondary); }
.premium-features li i { color: var(--primary); }
.premium-modal-actions { display: flex; gap: 12px; }

/* Bottom Navigation */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    z-index: 100;
}

.bottom-nav-items { display: flex; height: 100%; }

.bottom-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.bottom-nav-item.active { color: var(--primary); }
.bottom-nav-item i { font-size: 1.25rem; }
.bottom-nav-item span { font-size: 0.65rem; font-weight: 500; }

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-dark), var(--bg-card));
}

.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    border: 1px solid var(--border-color);
}

.login-header { text-align: center; margin-bottom: 32px; }

.login-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    font-weight: 700;
    color: white;
}

.login-header h1 { font-size: 1.5rem; margin-bottom: 8px; }
.login-header p { color: var(--text-secondary); }

.form-group { margin-bottom: 20px; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 8px; }

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s;
}

.form-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2); }
.form-input::placeholder { color: var(--text-muted); }

/* Sobre Page */
.sobre-content { max-width: 800px; margin: 0 auto; }
.sobre-header { text-align: center; margin-bottom: 32px; }

.sobre-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 3rem;
    color: white;
}

.sobre-social { display: flex; justify-content: center; gap: 16px; margin-top: 24px; }

.social-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.social-icons {
    display: flex;
    gap: 10px;
}

.social-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.social-icon:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.sidebar-social {
    margin-top: auto;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-input);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.social-link:hover { background: var(--primary); color: white; transform: translateY(-4px); }

/* Responsivo */
@media (max-width: 1024px) {
    .quick-actions { grid-template-columns: repeat(2, 1fr); }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.active { transform: translateX(0); }
    .main-content { margin-left: 0; }
    .bottom-nav { display: block; }
    .page-content { padding: 16px; }
    .quick-actions { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .quick-action-card { padding: 16px; }
    .quick-action-icon { width: 48px; height: 48px; font-size: 1.25rem; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .quiz-grid { grid-template-columns: 1fr; }
    .header { padding: 0 16px; }
    .menu-toggle { display: flex; }
}

@media (max-width: 480px) {
    .quick-actions { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .quiz-card-actions { flex-direction: column; }
    .btn { width: 100%; }
}

/* Animações */
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes pulse { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.05); } }
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }

.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-pulse { animation: pulse 2s infinite; }

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* Utilitários */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Overlay para sidebar mobile */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.sidebar-overlay.active { opacity: 1; visibility: visible; }

/* Toast Notifications */
.toast-container { position: fixed; top: 20px; right: 20px; z-index: 9999; }

.toast {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--primary);
    animation: fadeIn 0.3s ease;
}

.toast.success { border-left-color: var(--primary); }
.toast.error { border-left-color: var(--danger); }
.toast.warning { border-left-color: var(--accent); }

/* Alerts */
.alert {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success { background: rgba(16, 185, 129, 0.2); color: var(--primary); }
.alert-error { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.alert-warning { background: rgba(245, 158, 11, 0.2); color: var(--accent); }
.alert-info { background: rgba(59, 130, 246, 0.2); color: var(--secondary); }