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

:root {
    /* Cores Modo Claro - Paleta mais vibrante e moderna */
    --bg-primary-dark: #1a202c;
    --text-primary-dark: #e2e8f0;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-secondary-dark: #94a3b8;
    --accent-primary: #3b82f6;
    --accent-secondary: #10b981;
    --accent-tertiary: #8b5cf6;
    --accent-quaternary: #f59e0b;
    --border-color: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-lg: rgba(0, 0, 0, 0.15);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-quaternary: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    /* Tipografia */
    --font-primary: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-h1: 3rem;
    --font-size-h2: 2.25rem;
    --font-size-h3: 1.75rem;
    --font-size-body: 1rem;
    --font-size-small: 0.875rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Espaçamentos */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 5rem;
    
    /* Bordas */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-full: 9999px;
}

/* Modo Noturno */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-primary: #60a5fa;
    --accent-secondary: #34d399;
    --accent-tertiary: #a78bfa;
    --accent-quaternary: #fbbf24;
    --border-color: #475569;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-lg: rgba(0, 0, 0, 0.4);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-quaternary: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

/* Importar Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

/* Header limpo e moderno */
.header-fixo {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 20px var(--shadow);
    z-index: 1000;
    transition: all 0.3s ease;
}

[data-theme="dark"] .header-fixo {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.navbar {
    padding: var(--spacing-md) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    color: var(--text-primary);
    font-size: var(--font-size-h3);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.025em;
}

.menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: var(--spacing-md);
}

.menu a {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: all 0.3s ease;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.menu a:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    transform: translateY(-1px);
}

/* Dropdown Styles */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    cursor: pointer;
    user-select: none;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 20px var(--shadow-lg);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    list-style: none;
    padding: var(--spacing-xs) 0;
    margin: 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s ease;
    border-radius: 0;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-primary);
    transform: none;
    padding-left: calc(var(--spacing-md) + 0.5rem);
}

.btn-modo {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px var(--shadow);
}

.btn-modo:hover {
    background-color: var(--accent-primary);
    color: white;
    transform: scale(1.05);
    box-shadow: 0 4px 15px var(--shadow);
}

/* Main Content */
main {
    margin-top: 90px;
}

/* Hero Section com gradiente suave */
.hero {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%"><stop offset="0%" stop-color="rgba(255,255,255,0.1)"/><stop offset="100%" stop-color="rgba(255,255,255,0)"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="120" fill="url(%23a)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-content h2 {
    font-size: var(--font-size-h1);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.025em;
    animation: slideInUp 1s ease-out;
}

.hero-content p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0.95;
    font-weight: var(--font-weight-normal);
    animation: slideInUp 1s ease-out 0.2s both;
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Ferramentas Section */
.quizzes {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
    position: relative;
    padding-top: calc(var(--spacing-3xl) + 20px); /* Aumenta o padding superior */
}
.ferramentas::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.quizzes h2 {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    position: relative;
    z-index: 2; /* Aumentando o z-index para garantir que fique acima dos cards */
}.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.card {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 40px var(--shadow);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.6s ease;
}

.card:hover::before {
    left: 100%;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 20px 60px var(--shadow-lg);
}

.card-icon {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    display: inline-block;
    transition: transform 0.3s ease;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card h3 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
}

.card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
    font-weight: var(--font-weight-normal);
}

.btn-card {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    text-decoration: none;
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-semibold);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* Cores específicas para cada card */
.card:nth-child(1) .btn-card { background: var(--gradient-primary); }
.card:nth-child(2) .btn-card { background: var(--gradient-secondary); }
.card:nth-child(3) .btn-card { background: var(--gradient-tertiary); }
.card:nth-child(4) .btn-card { background: var(--gradient-quaternary); }
.card:nth-child(5) .btn-card { background: var(--gradient-primary); }
.card:nth-child(6) .btn-card { background: var(--gradient-secondary); }
.card:nth-child(7) .btn-card { background: var(--gradient-tertiary); }
.card:nth-child(8) .btn-card { background: var(--gradient-quaternary); }
.card:nth-child(9) .btn-card { background: var(--gradient-primary); }
.card:nth-child(10) .btn-card { background: var(--gradient-secondary); }

/* Artigos Section */
.artigos-destaque {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
}

.artigos-destaque h2 {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
}

.artigos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: var(--spacing-xl);
}

.artigo-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 40px var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.artigo-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.artigo-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px var(--shadow-lg);
}

.artigo-imagem {
    width: 100%;
    height: 200px;
    overflow: hidden;
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
}

.artigo-imagem img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.artigo-card:hover .artigo-imagem img {
    transform: scale(1.05);
}

.artigo-conteudo {
    padding: var(--spacing-xl);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.artigo-card h3 {
    font-size: var(--font-size-h3);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

.artigo-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
    font-weight: var(--font-weight-normal);
    flex: 1;
}

.btn-artigo {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: all 0.3s ease;
    position: relative;
}

.btn-artigo::after {
    content: '→';
    margin-left: var(--spacing-xs);
    transition: transform 0.3s ease;
}

.btn-artigo:hover::after {
    transform: translateX(4px);
}

.btn-artigo:hover {
    color: var(--accent-secondary);
}

/* Sobre Projeto Section */
.sobre-projeto {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    text-align: center;
    position: relative;
}

.sobre-projeto::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.sobre-projeto h2 {
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-h2);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.sobre-projeto p {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
    font-weight: var(--font-weight-normal);
    position: relative;
    z-index: 1;
}

/* Footer */
.footer {
    background-color: var(--bg-primary-dark);
    color: var(--text-primary-dark);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    animation: float 25s ease-in-out infinite reverse;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    position: relative;
    z-index: 1;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary-dark);
    font-weight: var(--font-weight-bold);
}

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

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--text-secondary-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    font-weight: var(--font-weight-normal);
}

.footer-section ul li a:hover {
    color: var(--accent-primary);
    transform: translateX(4px);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
}

.footer-bottom p {
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-normal);
}

/* Breadcrumbs */
.breadcrumbs {
    padding: var(--spacing-lg) 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color 0.3s ease;
}

.breadcrumbs a:hover {
    color: var(--accent-secondary);
}

/* Formulários */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-card);
    color: var(--text-primary);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-normal);
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

/* Resultado */
.resultado {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    margin-top: var(--spacing-xl);
    box-shadow: 0 10px 40px var(--shadow);
    position: relative;
    overflow: hidden;
}

.resultado::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.resultado h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-bold);
}

.resultado-valor {
    font-size: 3rem;
    font-weight: var(--font-weight-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.025em;
}

.resultado-interpretacao {
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: var(--font-weight-normal);
}

/* Menu Hambúrguer */
.menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-xs);
    border: none;
    background: transparent;
    z-index: 1001;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Responsividade */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex !important;
    }
    
    .menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--bg-primary);
        border-left: 1px solid var(--border-color);
        box-shadow: -5px 0 20px var(--shadow);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px var(--spacing-lg) var(--spacing-lg);
        gap: var(--spacing-lg);
        transition: right 0.3s ease;
        z-index: 1000;
        overflow-y: auto;
    }
    
    .menu.active {
        right: 0;
    }
    
    .menu li {
        width: 100%;
    }
    
    .menu a {
        width: 100%;
        padding: var(--spacing-md);
        border-radius: var(--border-radius-md);
        justify-content: flex-start;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        background: var(--bg-secondary);
        border-radius: var(--border-radius-md);
        margin-top: var(--spacing-xs);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    
    .dropdown.active .dropdown-menu {
        max-height: 300px;
    }
    
    .dropdown-menu a {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
        margin: 0;
    }
    
    .dropdown-toggle::after {
        content: '▼';
        margin-left: auto;
        font-size: 0.8rem;
        transition: transform 0.3s ease;
    }
    
    .dropdown.active .dropdown-toggle::after {
        transform: rotate(180deg);
    }
    
    .btn-modo {
        margin-top: var(--spacing-md);
    }
    
    .hero-content h2 {
        font-size: 2.5rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .artigos-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    :root {
        --font-size-h1: 2.5rem;
        --font-size-h2: 2rem;
        --font-size-h3: 1.5rem;
        --spacing-3xl: 4rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .ferramentas,
    .artigos-destaque,
    .sobre-projeto {
        padding: var(--spacing-xl) 0;
    }
    
    .card,
    .artigo-card {
        padding: var(--spacing-lg);
    }
    
    .hero-content h2 {
        font-size: 2rem;
    }
    
    :root {
        --font-size-h1: 2rem;
        --font-size-h2: 1.75rem;
        --font-size-h3: 1.25rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
        --spacing-3xl: 3rem;
    }
}

/* Animações avançadas */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    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;
    }
}

.card,
.artigo-card {
    animation: fadeInUp 0.8s ease-out;
}

.card:nth-child(even) {
    animation-delay: 0.1s;
}

.card:nth-child(3n) {
    animation-delay: 0.2s;
}

/* Estados de Loading */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 24px;
    height: 24px;
    margin: -12px 0 0 -12px;
    border: 3px solid var(--accent-primary);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Estilos específicos para páginas de artigo - MELHORADOS */
.artigo-content {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
    position: relative;
}

.artigo-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
    z-index: 0;
}

.artigo-content .container {
    max-width: 900px;
    position: relative;
    z-index: 1;
}

.artigo-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 20px 60px var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.artigo-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
}

.artigo-header::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.artigo-header h1 {
    font-size: 3.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.025em;
    position: relative;
    z-index: 1;
}

.artigo-meta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    font-size: var(--font-size-small);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-medium);
    position: relative;
    z-index: 1;
}

.artigo-meta span {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-full);
    border: 1px solid var(--border-color);
}

.artigo-resumo {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
    font-weight: var(--font-weight-normal);
    position: relative;
    z-index: 1;
    font-style: italic;
}

.artigo-corpo {
    background: var(--bg-card);
    padding: var(--spacing-3xl);
    border-radius: var(--border-radius-xl);
    box-shadow: 0 10px 40px var(--shadow);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.artigo-corpo::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.1;
    border-radius: 0 var(--border-radius-xl) 0 100%;
}

.artigo-corpo h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-top: var(--spacing-3xl);
    margin-bottom: var(--spacing-xl);
    font-weight: var(--font-weight-bold);
    position: relative;
    padding-left: var(--spacing-lg);
}

.artigo-corpo h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    border-radius: var(--border-radius-full);
}

.artigo-corpo h2:first-child {
    margin-top: 0;
}

.artigo-corpo h3 {
    font-size: 2rem;
    color: var(--text-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    font-weight: var(--font-weight-bold);
    position: relative;
    padding-left: var(--spacing-md);
}

.artigo-corpo h3::before {
    content: '▶';
    position: absolute;
    left: 0;
    color: var(--text-primary);
    font-size: 0.8em;
}

.artigo-corpo h4 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: var(--font-weight-semibold);
}

.artigo-corpo p {
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
    font-size: 1.125rem;
    font-weight: var(--font-weight-normal);
    color: var(--text-primary);
}

.artigo-corpo ul,
.artigo-corpo ol {
    margin-bottom: var(--spacing-lg);
    margin-left: var(--spacing-xl);
    list-style-position: outside;
}

.artigo-corpo ul li,
.artigo-corpo ol li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    font-weight: var(--font-weight-normal);
    position: relative;
}

.artigo-corpo ul li::marker {
    color: var(--text-primary);
}

.artigo-corpo strong {
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
}

/* Destaque para fórmulas */
.formula-destaque {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    text-align: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin: var(--spacing-xl) 0;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

/* Seções especiais melhoradas */
.classificacao-obesidade,
.ferramentas-relacionadas,
.cta-calculadora {
    background: var(--bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    border: 1px solid var(--border-color);
    margin: var(--spacing-3xl) 0;
    box-shadow: 0 15px 50px var(--shadow);
    position: relative;
    overflow: hidden;
}

.classificacao-obesidade::before,
.ferramentas-relacionadas::before,
.cta-calculadora::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-tertiary) 100%);
}

.classificacao-obesidade::after,
.ferramentas-relacionadas::after,
.cta-calculadora::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent-secondary), var(--accent-tertiary));
    opacity: 0.1;
    border-radius: 50%;
}

.classificacao-obesidade h3,
.ferramentas-relacionadas h3,
.cta-calculadora h3 {
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-h3);
    position: relative;
    z-index: 1;
}

.classificacao-obesidade table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 8px 25px var(--shadow);
    position: relative;
    z-index: 1;
}

.classificacao-obesidade th,
.classificacao-obesidade td {
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-weight: var(--font-weight-medium);
}

.classificacao-obesidade th {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: var(--font-size-small);
}

.classificacao-obesidade tr:nth-child(even) {
    background: linear-gradient(90deg, var(--bg-secondary) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.classificacao-obesidade tr:hover {
    background: linear-gradient(90deg, var(--border-color) 0%, rgba(59, 130, 246, 0.05) 100%);
    transform: scale(1.01);
    transition: all 0.3s ease;
}

.cta-calculadora p,
.ferramentas-relacionadas p {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

.cta-calculadora .btn-primary,
.ferramentas-relacionadas .btn-secondary {
    display: block;
    width: fit-content;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: white;
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(245, 87, 108, 0.3);
}

/* Modo noturno para artigos */
[data-theme="dark"] .artigo-header h1,
[data-theme="dark"] .artigo-corpo h3,
[data-theme="dark"] .artigo-corpo h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .artigo-corpo h2::after,
[data-theme="dark"] .artigo-header::after {
    background: var(--gradient-primary);
}

[data-theme="dark"] .artigo-corpo strong {
    color: var(--text-primary);
}

[data-theme="dark"] .classificacao-obesidade,
[data-theme="dark"] .ferramentas-relacionadas,
[data-theme="dark"] .cta-calculadora {
    background-color: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .classificacao-obesidade th {
    background: var(--gradient-primary);
}

[data-theme="dark"] .classificacao-obesidade tr:nth-child(even) {
    background-color: var(--bg-secondary);
}

[data-theme="dark"] .classificacao-obesidade tr:hover {
    background-color: var(--border-color);
}

/* Scroll suave */
html {
    scroll-behavior: smooth;
}

/* Scrollbar personalizada */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gradient-secondary);
}

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

::-moz-selection {
    background: var(--accent-primary);
    color: white;
}



.artigo-imagem {
    width: 100%;
    height: 200px; /* Altura fixa para as imagens */
    overflow: hidden;
    border-radius: 10px;
    margin-bottom: 20px;
}

.artigo-imagem img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Garante que a imagem cubra o espaço sem distorcer */
    transition: transform 0.3s ease;
}

.artigo-item:hover .artigo-imagem img {
    transform: scale(1.05);
}




/* Estilos para imagens dos artigos */
.artigo-imagem {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.artigo-item:hover .artigo-imagem {
    transform: scale(1.05);
}

/* Ajustes para o layout dos cards com imagem */
.artigo-item {
    padding: 0;
    overflow: hidden;
}

.artigo-conteudo {
    padding: 30px;
}

.artigo-item::before {
    display: none;
}

/* Modo noturno para imagens */
.modo-noturno .artigo-imagem {
    opacity: 0.9;
}

@media (max-width: 768px) {
    .artigo-imagem {
        height: 150px;
    }
    
    .artigo-conteudo {
        padding: 20px;
    }
}



/* Estilos para imagens dos artigos */
.artigo-imagem {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 20px;
    transition: transform 0.3s ease;
}

.artigo-item:hover .artigo-imagem {
    transform: scale(1.05);
}

/* Ajustes para o layout dos cards com imagem */
.artigo-item {
    padding: 0;
    overflow: hidden;
}

.artigo-conteudo {
    padding: 30px;
}

.artigo-item::before {
    display: none;
}

/* Modo noturno para imagens */
.modo-noturno .artigo-imagem {
    opacity: 0.9;
}

@media (max-width: 768px) {
    .artigo-imagem {
        height: 150px;
    }
    
    .artigo-conteudo {
        padding: 20px;
    }
}



/* Estilos específicos da página de artigos */
.artigos-page {
    padding: 120px 0 60px;
    min-height: 100vh;
}

.artigos-header {
    text-align: center;
    margin-bottom: 60px;
}

.artigos-header h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.artigos-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.filtros-artigos {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.filtro-btn {
    padding: 10px 20px;
    border: 2px solid var(--accent-primary);
    background: transparent;
    color: var(--text-primary);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.filtro-btn:hover,
.filtro-btn.ativo {
    background: var(--accent-primary);
    color: white;
}

.busca-artigos {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
}

.busca-input {
    width: 100%;
    max-width: 500px;
    padding: 15px 20px;
    border: 2px solid var(--border-color);
    border-radius: 30px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s ease;
    background-color: var(--bg-card);
    color: var(--text-primary);
}

.busca-input:focus {
    border-color: var(--accent-primary);
}

.artigos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.artigo-item {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.artigo-item::before {
    content: \'\';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
}

.artigo-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-lg);
}

.artigo-categoria {
    display: inline-block;
    background: var(--accent-primary);
    color: white;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.artigo-titulo {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.artigo-descricao {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.artigo-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.artigo-link:hover {
    color: var(--accent-secondary);
    transform: translateX(5px);
}

.artigo-link::after {
    content: \'→\';
    margin-left: 8px;
    transition: transform 0.3s ease;
}

.artigo-link:hover::after {
    transform: translateX(3px);
}

.sem-resultados {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.sem-resultados h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

@media (max-width: 768px) {
    .artigos-header h1 {
        font-size: 2rem;
    }
    
    .filtros-artigos {
        gap: 10px;
    }
    
    .filtro-btn {
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
    .artigos-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .artigo-item {
        padding: 20px;
    }
}

/* Modo noturno para a página de artigos */
[data-theme="dark"] .artigo-item {
    background: var(--bg-card);
    border-color: var(--border-color);
}

[data-theme="dark"] .busca-input {
    background: var(--bg-card);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .filtro-btn {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .filtro-btn:hover,
[data-theme="dark"] .filtro-btn.ativo {
    background: var(--accent-primary);
    color: white;
}

[data-theme="dark"] .artigo-titulo {
    color: var(--text-primary);
}

[data-theme="dark"] .artigo-descricao {
    color: var(--text-secondary);
}

[data-theme="dark"] .artigo-link {
    color: var(--text-primary);
}

[data-theme="dark"] .artigo-link:hover {
    color: var(--accent-secondary);
}




/* Destaque dos Desafios */
.desafios-destaque {
    padding: 60px 0;
    text-align: center;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.desafios-destaque h2 {
    color: var(--text-primary);
    margin-bottom: 20px;
}

.desafios-destaque p {
    font-size: 1.2em;
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.desafio-card {
    background: var(--bg-card);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px var(--shadow);
    margin-bottom: 30px;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.desafio-card h3 {
    color: var(--accent-secondary);
    margin-bottom: 15px;
}

.desafio-card p {
    font-size: 1.1em;
    color: var(--text-primary);
    font-weight: 500;
}

.desafios-destaque .btn-card {
    background-color: var(--accent-secondary);
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    display: inline-block;
    transition: background-color 0.3s ease;
}

.desafios-destaque .btn-card:hover {
    background-color: #34d399; /* Um tom um pouco mais escuro para o hover */
}




body {
    zoom: 75%;
    -moz-transform: scale(0.75); /* Firefox */
    -moz-transform-origin: top left; /* Firefox */
}




/* Estilos para o calendário no modo escuro */
[data-theme="dark"] .calendar-container {
    background-color: var(--bg-card);
    box-shadow: 0 2px 10px var(--shadow);
}

[data-theme="dark"] .calendar-header h2 {
    color: var(--text-primary);
}

[data-theme="dark"] .calendar-day {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .calendar-day.completed {
    background-color: #34d399; /* Um verde mais escuro para o modo escuro */
    border-color: #10b981;
    color: #ffffff; /* Cor do texto branca para melhor contraste no modo escuro */
}

[data-theme="dark"] .calendar-day:hover {
    background-color: var(--bg-card);
}

[data-theme="dark"] .calendar-day.completed:hover {
    background-color: #2ebc8d;
}

[data-theme="dark"] .day-number {
    color: var(--text-primary);
}

[data-theme="dark"] .day-challenge {
    color: var(--text-secondary);
}

[data-theme="dark"] .day-status {
    color: var(--accent-secondary);
}

[data-theme="dark"] .weekdays {
    color: var(--text-secondary);
}

[data-theme="dark"] .weekday-name {
    background-color: var(--bg-secondary);
}

[data-theme="dark"] .empty-day {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}




/* Estilos para o modo escuro no calendário */
[data-theme="dark"] .calendar-day.completed {
    background-color: var(--bg-card);
    border-color: var(--accent-secondary);
}

[data-theme="dark"] .calendar-day.completed .day-status {
    color: var(--accent-secondary);
}