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

:root {
    /* Cores principais */
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    
    /* Cores neutras */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Tipografia */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Espaçamentos */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    
    /* Bordas */
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transições */
    --transition: all 0.2s ease-in-out;
    --transition-slow: all 0.3s ease-in-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-6);
    }
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-8);
}

.nav-link {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--gray-600);
    margin: 2px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: calc(70px + var(--spacing-20)) 0 var(--spacing-20);
    background: var(--white);
    position: relative;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(90deg,rgba(155, 210, 232, 1) 0%, rgba(255, 255, 255, 1) 35%, rgba(255, 255, 255, 1) 41%, rgba(255, 255, 255, 1) 59%, rgba(155, 210, 232, 1) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%); */
    z-index: 1;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    /* background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%); */
    z-index: 2;
}



.hero-content {
    position: relative;
    z-index: 3;
    max-width: 800px;
    margin: 0 auto;
   
/* background: radial-gradient(circle, rgba(155, 210, 232, 1) 0%, rgba(255, 255, 255, 1) 100%); */
}

.hero-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-6);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 400;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--spacing-6);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-600);
    margin-bottom: var(--spacing-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 3;
}

.hero-cta .btn {
    animation: fadeInUp 0.6s ease-out;
}

.hero-cta .btn:nth-child(2) {
    animation-delay: 0.1s;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4) var(--spacing-8);
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: var(--font-size-base);
    min-width: 140px;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    border: 2px solid var(--primary-color);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 2px solid var(--gray-300);
}

.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    color: var(--gray-900);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-text {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
}

.btn-text:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* Section Titles */
.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--gray-900);
    text-align: center;
    margin-bottom: var(--spacing-12);
}

/* Featured Articles */
.featured-articles {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.article-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.article-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.article-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.article-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.article-card:hover .article-image img {
    transform: scale(1.05);
}

.article-content {
    padding: var(--spacing-6);
}

.article-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--spacing-3);
    line-height: 1.4;
}

.article-excerpt {
    color: var(--gray-600);
    margin-bottom: var(--spacing-4);
    line-height: 1.6;
}

/* AdSense Container */
.ad-container {
    background: var(--gray-50);
    border-radius: var(--border-radius);
    padding: var(--spacing-4);
    text-align: center;
    border: 1px solid var(--gray-200);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-6) 0;
}

.ad-container::before {
    content: 'Publicidade';
    color: var(--gray-500);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* AdSense Sidebar */
.ad-sidebar {
    position: fixed;
    top: 50%;
    right: 20px;
    transform: translateY(-50%);
    width: 300px;
    height: 600px;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    border: 1px solid var(--gray-200);
    display: none;
    z-index: 100;
}

@media (min-width: 1200px) {
    .ad-sidebar {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* AdSense Top/Bottom */
.ad-top {
    margin-bottom: var(--spacing-8);
}

.ad-bottom {
    margin-top: var(--spacing-8);
}

/* Categories */
.categories {
    padding: var(--spacing-20) 0;
    /* background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%); */
    /* background: radial-gradient(circle,rgba(155, 210, 232, 1) 0%, rgba(255, 255, 255, 1) 44%, rgba(155, 210, 232, 1) 100%); */
    position: relative;
    overflow: hidden;
    /* background: #9cd3e8; */
    background: linear-gradient(90deg,rgba(155, 210, 232, 1) 0%, rgba(230, 250, 255, 1) 51%, rgba(155, 210, 232, 1) 100%);;
}

.categories::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: linear-gradient(135deg, rgba(37, 99, 235, 0.95) 0%, rgba(29, 78, 216, 0.95) 100%); */
    z-index: 1;
}

.categories::after {
    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 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>'); */
    opacity: 0.1;
    z-index: 2;
}

.categories .container {
    position: relative;
    z-index: 3;
}

.categories .section-title {
    color: var(--white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

.category-card {
    animation: fadeIn 0.5s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }

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

@media (min-width: 768px) {
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .categories-grid {
        grid-template-columns: repeat(6, 1fr);
    }
}

.category-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--border-radius-lg);
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.05) 0%, rgba(37, 99, 235, 0.02) 100%);
    opacity: 0;
    transition: var(--transition);
}

.category-card:hover::before {
    opacity: 1;
}

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

.category-card:hover::before {
    opacity: 1;
}

.category-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
    position: relative;
    z-index: 2;
}

.category-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--gray-900);
    position: relative;
    z-index: 2;
}

.category-card p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    position: relative;
    z-index: 2;
}

/* Tools */
.tools {
    padding: var(--spacing-20) 0;
    background: var(--white);
}

.tools-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.tool-card {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--border-radius-lg);
    text-align: center;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-color);
}

.tool-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-4);
}

.tool-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--gray-900);
}

.tool-card p {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

/* Latest Articles */
.latest-articles {
    padding: var(--spacing-20) 0;
    background: var(--gray-50);
}

.latest-articles-list {
    max-width: 800px;
    margin: 0 auto;
}

.latest-article {
    background: var(--white);
    padding: var(--spacing-6);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-4);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.latest-article:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.article-meta {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-2);
}

.article-date,
.article-category {
    font-size: var(--font-size-sm);
    color: var(--gray-500);
}

.article-category {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--border-radius);
    font-weight: 500;
}

.latest-article h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.latest-article h3 a {
    color: var(--gray-900);
    text-decoration: none;
    transition: var(--transition);
}

.latest-article h3 a:hover {
    color: var(--primary-color);
}

/* Newsletter */
.newsletter {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

.newsletter-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.newsletter-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-6);
}

.newsletter h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-4);
}

.newsletter p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-8);
    opacity: 0.9;
}

.newsletter-form {
    max-width: 400px;
    margin: 0 auto;
}

.form-group {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.form-group input {
    flex: 1;
    min-width: 200px;
    padding: var(--spacing-3) var(--spacing-4);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    background: var(--white);
    color: var(--gray-900);
}

.form-group input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.form-group .btn {
    background: var(--accent-color);
    color: var(--white);
    border: none;
    white-space: nowrap;
}

.form-group .btn:hover {
    background: #d97706;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-16) 0 var(--spacing-8);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-4);
    color: var(--white);
}

.footer-section p {
    color: var(--gray-300);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-2);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-email {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.footer-email:hover {
    text-decoration: underline;
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-8);
    text-align: center;
    color: var(--gray-400);
}

/* Mobile Menu */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .form-group input,
    .form-group .btn {
        width: 100%;
    }
}

/* Performance Optimizations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .header,
    .newsletter,
    .footer {
        display: none;
    }
    
    .hero {
        padding: var(--spacing-8) 0;
    }
    
    .article-card,
    .category-card,
    .tool-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
}

/* Focus styles for accessibility */
.btn:focus,
.nav-link:focus,
.category-card:focus,
.tool-card:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* AdSense responsive adjustments */
@media (max-width: 480px) {
    .ad-container {
        min-height: 200px;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --gray-600: #000000;
        --gray-800: #000000;
    }
}