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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2563eb;
}

.logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #2563eb;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #2563eb;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #2563eb 0%, #16a34a 100%);
    color: white;
    padding: 120px 0 80px;
    min-height: 70vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    display: inline-block;
    background: #16a34a;
    color: white;
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
    background: #15803d;
    transform: translateY(-2px);
}

.hero-image {
    text-align: center;
}

.hero-image i {
    font-size: 15rem;
    opacity: 0.3;
}

/* Quick Links */
.quick-links {
    padding: 3rem 0;
    background: #f8fafc;
}

.quick-links h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #1e293b;
    font-size: 2rem;
}

.quick-links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.quick-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    background: white;
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.quick-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    border-color: #2563eb;
}

.quick-link i {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.quick-link span {
    color: #333;
    font-weight: 500;
}

/* Sections */
.section {
    padding: 4rem 0;
}

.bg-light {
    background: #f8fafc;
}

.section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #1e293b;
}

/* Benefits Section */
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid #2563eb;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.benefit-card i {
    font-size: 3rem;
    color: #16a34a;
    margin-bottom: 1rem;
}

.benefit-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

/* Obligations Section */
.obligations-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.obligation-group {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.obligation-group h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: #2563eb;
    font-size: 1.25rem;
}

.obligation-list {
    list-style: none;
}

.obligation-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.obligation-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #16a34a;
    font-weight: bold;
}

.warning-box {
    grid-column: 1 / -1;
    background: #fef2f2;
    border: 2px solid #fca5a5;
    padding: 2rem;
    border-radius: 12px;
}

.warning-box h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #dc2626;
    margin-bottom: 1rem;
}

.warning-box ul {
    list-style: none;
}

.warning-box li {
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.warning-box li::before {
    content: '⚠';
    position: absolute;
    left: 0;
    color: #dc2626;
}

/* Documents Section */
.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.document-category {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.document-category h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: #2563eb;
}

.document-category ul {
    list-style: none;
}

.document-category li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.document-category li::before {
    content: '📄';
    position: absolute;
    left: 0;
}

.tip-box {
    background: #f0f9ff;
    border: 2px solid #0ea5e9;
    padding: 2rem;
    border-radius: 12px;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.tip-box i {
    color: #0ea5e9;
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

/* Tax Section */
.tax-content {
    display: grid;
    gap: 2rem;
}

.das-table {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.das-table h3 {
    margin-bottom: 1.5rem;
    color: #1e293b;
    text-align: center;
}

.das-table table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
}

.das-table th,
.das-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.das-table th {
    background: #2563eb;
    color: white;
    font-weight: 600;
}

.das-table tr:hover {
    background: #f8fafc;
}

.tax-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.info-card,
.steps-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.info-card h3,
.steps-card h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: #16a34a;
}

.info-card ul,
.steps-card ol {
    list-style-position: inside;
}

.info-card li,
.steps-card li {
    padding: 0.5rem 0;
}

.steps-card ol {
    counter-reset: step-counter;
}

.steps-card li {
    counter-increment: step-counter;
    position: relative;
    padding-left: 2rem;
}

.steps-card li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0.5rem;
    background: #16a34a;
    color: white;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: bold;
}

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

.error-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    border-left: 4px solid #dc2626;
}

.error-card i {
    font-size: 2rem;
    color: #dc2626;
    margin-bottom: 1rem;
}

.error-card h3 {
    color: #dc2626;
    margin-bottom: 1rem;
}

.tips-section {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.tips-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    color: #16a34a;
    text-align: center;
    justify-content: center;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tip {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f0f9ff;
    border-radius: 8px;
}

.tip i {
    color: #0ea5e9;
    font-size: 1.5rem;
}

/* Footer */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: #2563eb;
}

.footer .logo {
    color: #2563eb;
    margin-bottom: 1rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.contact-info i {
    color: #16a34a;
    width: 20px;
}

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

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-image i {
        font-size: 8rem;
    }
    
    .obligations-content {
        grid-template-columns: 1fr;
    }
    
    .tax-info {
        grid-template-columns: 1fr;
    }
    
    .quick-links-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .documents-grid {
        grid-template-columns: 1fr;
    }
    
    .errors-grid {
        grid-template-columns: 1fr;
    }
    
    .tips-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-container {
        padding: 1rem 15px;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .section h2 {
        font-size: 2rem;
    }
    
    .quick-links-grid {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.benefit-card,
.obligation-group,
.document-category,
.error-card {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Active Hamburger Animation */
.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}