:root {
    --primary-color: #4CAF50;
    --secondary-color: #388E3C;
    --background-color: #f8f9fa;
    --text-color: #2c3e50;
    --success-color: #28a745;
    --error-color: #dc3545;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    background-color: var(--background-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
}

/* Header */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Main Content */
main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.hero {
    text-align: center;
    padding: 2rem 0;
}

.hero h1 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2.5rem;
}

.hero p {
    color: var(--text-color);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* Conversor (estilos existentes) */
.container {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 600px;
    width: 100%;
    margin: 2rem auto;
}

.upload-zone {
    border: 2px dashed var(--primary-color);
    padding: 3rem 2rem;
    border-radius: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    background: #f8fff9;
}

.upload-zone.dragover {
    background: var(--primary-color);
    border-color: var(--secondary-color);
}

.upload-zone.dragover * {
    color: white !important;
}

.upload-text {
    display: block;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.upload-subtext {
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.upload-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--primary-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}

.upload-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

#fileInput {
    display: none;
}

.convert-button {
    width: 100%;
    margin-top: 2rem;
    padding: 1rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.convert-button:hover {
    background: #2e7d32;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(46, 125, 50, 0.3);
}

.preview-container {
    margin: 1.5rem auto;
    position: relative;
    max-width: 400px;
    display: none;
}

.preview-image {
    width: 100%;
    height: auto;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary-color);
}

.preview-info {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-color);
}

.remove-button {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: var(--error-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.9;
    transition: opacity 0.2s;
}

.remove-button:hover {
    opacity: 1;
}

.status-message {
    margin-top: 1rem;
    padding: 0.8rem;
    border-radius: 0.5rem;
    display: none;
}

.status-message.success {
    background: #d4edda;
    color: var(--success-color);
}

.status-message.error {
    background: #f8d7da;
    color: var(--error-color);
}

/* Features */
.features {
    display: flex;
    gap: 1rem;
    margin: 3rem auto;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 1000px;
}

.feature-card {
    flex: 1;
    min-width: 250px;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
}

.feature-card i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

/* Footer */
footer {
    background-color: white;
    padding: 2rem;
    text-align: center;
    margin-top: auto;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

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

/* Estilos para Páginas Legais */
.legal-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.legal-container h1 {
    color: #2e7d32;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.last-update {
    color: #666;
    font-style: italic;
    margin-bottom: 2rem;
}

.legal-container section {
    margin-bottom: 2.5rem;
}

.legal-container h2 {
    color: #2e7d32;
    margin: 1.5rem 0 1rem;
    font-size: 1.3rem;
}

.legal-container ul {
    padding-left: 1.5rem;
    margin: 1rem 0;
}

.legal-container li {
    margin-bottom: 0.5rem;
}

/* Estilos para Página de Contato */
.contact-container {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
}

.submit-btn {
    background: #2e7d32;
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #1e5a21;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
}

.contact-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.contact-item i {
    font-size: 1.5rem;
    color: #2e7d32;
    margin-top: 3px;
}

.contact-item h4 {
    margin-bottom: 0.3rem;
}

.contact-item small {
    color: #666;
    font-size: 0.8rem;
}

/* Responsividade */
@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .legal-container, 
    .contact-form,
    .contact-info {
        padding: 1.5rem;
    }
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .nav-links {
        gap: 1rem;
    }
    
    .features {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .donation-options {
        flex-direction: column;
    }
    
    .donation-btn {
        justify-content: center;
    }
    
    .upload-zone {
        padding: 2rem 1rem;
    }
}