:root {
    /* Paleta de Cores Base */
    --color-primary: #2563EB;
    --color-primary-hover: #1D4ED8;
    --color-secondary: #06B6D4;
    --color-bg-light: #F8FAFC;
    --color-text-dark: #1F2937;
    --color-text-muted: #64748B;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;
    
    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    
    /* Sombras (Premium) */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 10px 40px -10px rgba(37, 99, 235, 0.5);
    
    /* Bordas e Espaçamentos */
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Tipografia */
    --font-primary: 'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Poppins', var(--font-primary);
}

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

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg-light);
    color: var(--color-text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: var(--color-primary);
    transition: color 0.3s ease;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ================= Navbar ================= */
.navbar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    color: var(--color-primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-links a:not(.btn-primary-outline)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:not(.btn-primary-outline):hover::after {
    width: 100%;
}

.btn-primary-outline {
    border: 1px solid var(--color-primary);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    color: var(--color-primary) !important;
    transition: all 0.3s ease;
}

.btn-primary-outline:hover {
    background: var(--color-primary);
    color: var(--color-white) !important;
    box-shadow: var(--shadow-glow);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-dark);
    cursor: pointer;
}

/* ================= Botões Gerais ================= */
.btn-primary {
    background: var(--color-primary);
    color: var(--color-white);
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    border: none;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

/* ================= Hero Section ================= */
.hero {
    padding: 3rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--color-white);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.badge-premium {
    background: rgba(37, 99, 235, 0.1);
    color: var(--color-primary);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 1.5rem;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero .subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    margin-bottom: 2.5rem;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: 9999px;
    padding: 0.5rem;
    padding-left: 1.5rem;
    box-shadow: var(--shadow-md);
    max-width: 600px;
    margin: 0 auto;
    transition: box-shadow 0.3s ease;
}

.search-box:focus-within {
    box-shadow: var(--shadow-lg), 0 0 0 2px rgba(37, 99, 235, 0.2);
    border-color: var(--color-primary);
}

.search-box i {
    color: var(--color-text-muted);
    font-size: 1.2rem;
}

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    color: var(--color-text-dark);
}

/* Background Glows */
.hero-bg-glow {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(100px);
    z-index: 1;
    opacity: 0.4;
}

.glow-1 {
    top: -200px;
    left: -100px;
    background: rgba(37, 99, 235, 0.3);
}

.glow-2 {
    bottom: -200px;
    right: -100px;
    background: rgba(6, 182, 212, 0.3);
}

/* ================= Catalog Section ================= */
.catalog-section {
    padding: 2rem 0 5rem 0;
}

.section-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
}

.category-filters {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    padding: 0.5rem 1.25rem;
    border-radius: 9999px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

/* ================= Grid & Cards ================= */
.grid-tools {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.tool-card {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.tool-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.tool-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.tool-logo {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    object-fit: cover;
    box-shadow: var(--shadow-sm);
}

.tool-category {
    background: var(--color-bg-light);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tool-card-body {
    flex: 1;
}

.tool-card-body h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-text-dark);
}

.tool-card-body p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.tool-card-footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    padding-top: 1.25rem;
}

.btn-access {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    color: var(--color-primary);
    font-weight: 600;
}

.btn-access i {
    font-size: 1.25rem;
    transition: transform 0.3s ease;
}

.btn-access:hover i {
    transform: translateX(5px);
}

/* ================= Footer ================= */
.footer {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    padding: 4rem 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-top: 1rem;
    max-width: 300px;
}

.footer h4 {
    font-family: var(--font-heading);
    margin-bottom: 1.25rem;
    color: var(--color-text-dark);
}

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-text-muted);
}

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

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-bg-light);
    color: var(--color-text-dark);
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ================= Responsividade ================= */
@media (max-width: 1024px) {
    .grid-tools {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .search-box {
        flex-direction: column;
        border-radius: 1.5rem;
        padding: 1rem;
        gap: 0.5rem;
    }
    
    .search-box i {
        display: none;
    }
    
    .search-box input {
        width: 100%;
        text-align: center;
        padding: 0.5rem;
    }
    
    .search-box .btn-primary {
        width: 100%;
        justify-content: center;
    }
    
    .grid-tools {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand p {
        margin: 1rem auto;
    }
    
    .social-icons {
        justify-content: center;
    }
    
    .nav-links {
        display: none;
    }
    
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(12px);
        padding: 1.5rem;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--color-border);
        gap: 1.5rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }
}