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

/* Variáveis CSS */
:root {
    /* Cores */
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    --background-light: #f9fafb;
    --background-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Tipografia */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-secondary: 'Poppins', sans-serif;
    
    /* Tamanhos de fonte */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Espaçamentos */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transições */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* Tipografia base */
body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-secondary);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

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

.section {
    padding: var(--space-20) 0;
}

.section-sm {
    padding: var(--space-12) 0;
}

/* 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(--border-color);
    z-index: 1000;
    transition: all var(--transition-normal);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
}

.logo {
    font-family: var(--font-secondary);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--primary-color);
}

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

nav ul li a {
    font-weight: 500;
    color: var(--text-primary);
    padding: var(--space-2) var(--space-4);
    border-radius: 6px;
    transition: all var(--transition-fast);
}

nav ul li a:hover {
    background-color: var(--background-light);
    color: var(--primary-color);
}

/* Hero Section */
#hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    text-align: center;
    padding: var(--space-20) 0;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-bg.jpg') center/cover;
    opacity: 0.1;
    z-index: 0;
}

#hero > * {
    position: relative;
    z-index: 1;
}

#hero h1 {
    font-size: var(--text-5xl);
    margin-bottom: var(--space-6);
    font-weight: 700;
}

#hero p {
    font-size: var(--text-xl);
    margin-bottom: var(--space-8);
    color: rgba(255, 255, 255, 0.9);
}

/* Botões */
.btn {
    display: inline-block;
    padding: var(--space-3) var(--space-6);
    background-color: var(--accent-color);
    color: white;
    font-weight: 600;
    border-radius: 8px;
    transition: all var(--transition-normal);
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* Seções de conteúdo */
#services {
    background-color: var(--background-light);
}

#services h2 {
    text-align: center;
    margin-bottom: var(--space-12);
    color: var(--text-primary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-8);
    margin-top: var(--space-8);
}

.service-item {
    background: white;
    padding: var(--space-8);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    text-align: center;
}

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

.service-item h3 {
    color: var(--primary-color);
    margin-bottom: var(--space-4);
}

/* Seção Sobre */
#about-short {
    text-align: center;
}

#about-short h2 {
    margin-bottom: var(--space-6);
}

#about-short p {
    font-size: var(--text-lg);
    max-width: 800px;
    margin: 0 auto var(--space-8);
}

/* Footer */
footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--space-12) 0 var(--space-8);
    text-align: center;
}

footer p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-6);
}

footer ul {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    list-style: none;
}

footer ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

footer ul li a:hover {
    color: white;
}

/* Responsividade */
@media (max-width: 768px) {
    :root {
        --text-4xl: 2rem;
        --text-5xl: 2.5rem;
    }
    
    nav {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    nav ul {
        gap: var(--space-4);
    }
    
    #hero {
        padding: var(--space-16) 0;
    }
    
    #hero h1 {
        font-size: var(--text-4xl);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    footer ul {
        flex-direction: column;
        gap: var(--space-3);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-3);
    }
    
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    #hero h1 {
        font-size: var(--text-3xl);
    }
    
    #hero p {
        font-size: var(--text-lg);
    }
}



/* Blog Filters */
.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

.filter-btn {
    background: var(--bg-light);
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
    font-size: var(--text-sm);
}

.filter-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card {
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.blog-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-card-content {
    padding: 1.5rem;
}

.blog-card .category {
    background: var(--primary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: var(--text-sm);
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1rem;
}

.blog-card h3 {
    margin: 0 0 0.5rem 0;
    font-size: var(--text-lg);
    line-height: 1.4;
}

.blog-card h3 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.blog-card h3 a:hover {
    color: var(--primary-color);
}

.blog-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
    color: var(--text-light);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
}

.pagination-btn {
    background: white;
    border: 2px solid var(--border-color);
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-weight: 500;
    min-width: 44px;
    text-align: center;
}

.pagination-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.pagination-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .blog-filters {
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.5rem;
    }
    
    .filter-btn {
        white-space: nowrap;
        flex-shrink: 0;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: 0.25rem;
    }
    
    .pagination-btn {
        padding: 0.5rem 0.75rem;
        font-size: var(--text-sm);
        min-width: 40px;
    }
}

@media (max-width: 480px) {
    .blog-card-content {
        padding: 1rem;
    }
    
    .blog-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
    }
}