:root {
    
    /* cores principais */
    --color-petroleum: #1E3A5F; /* Azul petróleo */
    --color-mint: #48C9B0;      /* Verde menta */
    --color-bg: #ffffff;        /* Fundo branco */
    --color-bg-soft: #f6f8fa;   /* Fundo cinza muito claro / alternativa */
    --color-border: #e0e0e0;    /* Cor do borda */

    /* tipografia */
    --font-sans: 'Inter', 'Lexend', 'Atkinson Hyperlegible', Arial, sans-serif;

    /* auxiliares */
    --text-default: #222;
    --text-soft: #555;
    --accent: var(--color-petroleum);
    --accent-2: var(--color-mint);
}

body {
    font-family: var(--font-sans);
    color: var(--text-default);
    margin: 0;
    line-height: 1.7;
}

.site-header {
    background: var(--color-bg);
    padding-bottom: 2rem;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem;
    background: var(--color-bg);
}

.logo {
    width: 100px;
    height: auto;
    object-fit: contain;
    object-position: center;
    object-fit: cover;
    object-position: center;
}

.main-nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-default);
}

.main-nav a:hover {
    text-decoration: underline;
}

.hero {
    text-align: center;
    padding: 4rem 2rem 2rem 2rem;
    background: var(--color-bg-soft);
}

.hero figure {
    margin: 0;
    overflow: hidden;
    border-radius: 1rem;
}

.hero figure img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;     
    max-height: 400px;      
    object-fit: cover;      
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-default);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-soft);
    margin-bottom: 2rem;
    max-width: 70ch;
    margin-inline: auto;
}

.cta-btn {
    background: var(--accent);
    color: var(--color-bg-soft);
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    border-radius: 2rem;
    cursor: pointer;
    margin-bottom: 2rem;
    transition: background 0.2s;
}

.cta-btn:hover {
    background: #005177;
}

details {
    margin-bottom: 1rem;
    padding: 1rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-soft);
}

details summary {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-default);
}

.about-section, .services-section, .testimonial-section, .contact-section {
    background: var(--color-bg);
    margin: 2rem auto;
    max-width: 900px;
    border-radius: 1rem;
    padding: 2rem;
}

.about-section header, .services-section header, .testimonial-section header, .contact-section header {
    margin-bottom: 2rem;
}

.about-section h2, .services-section h2, .testimonial-section h2, .contact-section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-default);
}

.contact-section form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-section form label {
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-default);
}

.contact-section form input, .contact-section form textarea {
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--color-border);
    font-size: 1rem;
    color: var(--text-default);
    width: 100%;
    box-sizing: border-box;
}

.contact-section form textarea {
    resize: vertical;
}

.contact-section form button {
    background: var(--accent);
    color: var(--color-bg-soft);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background 0.2s;
}

.contact-section form button:hover {
    background: #005177;
}

.col2 {
    display: flex;
    gap: 2rem;
    align-items: center;
    margin-bottom: 2rem;
}

.col2 figure img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.auto-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--color-bg-soft);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    padding: 2rem;
    text-align: left;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 24px rgba(0,0,0,0.07);
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--accent);
}

.card p {
    color: #444;
}

.testimonial-section .testimonial {
    background: var(--color-bg-soft);
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
    padding: 2rem;
    margin-bottom: 2rem;
    align-items: flex-start;
}

.testimonial blockquote {
    font-size: 1.1rem;
    color: var(--text-default);
    margin: 0;
}

.testimonial cite {
    display: block;
    margin-top: 1rem;
    color: var(--accent);
    font-style: normal;
}

.site-footer {
    background: var(--accent);
    color: var(--color-bg-soft);
    padding: 3rem 2rem 1rem 2rem;
    margin-top: 3rem;
}

.site-footer .auto-grid {
    gap: 2rem;
}

.site-footer ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1rem 0;
}

.site-footer h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-bg-soft);
}

.site-footer a {
    color: #fff;
    text-decoration: none;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.site-footer a:hover {
    text-decoration: underline;
}

.site-footer .icon {
    width: 20px;
    height: 20px;
    vertical-align: middle;
}

.site-footer .copyright {
    text-align: center;
    font-size: 0.95rem;
    color: var(--color-mint);
    margin-top: 2rem;
}

/* Responsive styles */
@media (min-width: 768px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 700px) {
    .main-nav {
        flex-direction: column;
        align-items: flex-start;
        padding: 1rem;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
    }
    .hero-title {
        font-size: 2.2rem;
    }
    .about-section, .services-section, .testimonial-section {
        padding: 1rem;
    }
    .col2 {
        flex-direction: column;
        gap: 1rem;
    }
    .auto-grid {
        grid-template-columns: 1fr;
    }
}