:root {
    --color-brown-dark: #715b46;
    --color-terracotta: #9f5535;
    --color-beige: #f3e2cc;
    --color-beige-light: #f7f3ed;
    --color-pink-pastel: #d8beb6;
    --color-white: #ffffff;
    
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Montserrat', sans-serif;

    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-brown-dark);
    background-color: var(--color-beige-light);
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-primary {
    background-color: var(--color-terracotta);
    color: var(--color-white);
    border: none;
}

.btn-primary:hover {
    background-color: var(--color-brown-dark);
    transform: translateY(-2px);
}

/* Header */
.header {
    background-color: var(--color-beige-light);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(113, 91, 70, 0.05);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    max-height: 80px; /* Adjust based on the actual logo aspect ratio */
    width: auto;
}

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

.nav ul {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-brown-dark);
}

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

.btn-nav {
    border: 1px solid var(--color-terracotta);
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    color: var(--color-terracotta) !important;
}

.btn-nav:hover {
    background-color: var(--color-terracotta);
    color: var(--color-white) !important;
}

/* Hero Section */
.hero {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(to bottom, rgba(247, 243, 237, 0.9), rgba(255, 255, 255, 0.8)), url('imgs/doutor02.webp');
    background-size: cover;
    background-position: top center;
    background-attachment: fixed;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--color-brown-dark);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--color-terracotta);
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    font-size: 1.1rem;
    color: var(--color-brown-dark);
}

/* About Section */
.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.section-tag {
    display: block;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-terracotta);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.about-text p {
    margin-bottom: var(--spacing-sm);
}

.content-img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(113, 91, 70, 0.1);
    display: block;
}

/* Differentials */
.differentials {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-brown-dark);
    color: var(--color-beige-light);
    position: relative;
    overflow: hidden;
}

.differentials::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background-image: url('imgs/logo.png');
    background-repeat: no-repeat;
    background-size: contain;
    opacity: 0.03;
    transform: rotate(-15deg);
    pointer-events: none;
}

.differentials h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-beige);
}

.differentials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.differential-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.differential-item .icon {
    color: var(--color-terracotta);
    font-size: 1.5rem;
    line-height: 1;
}

.differential-item p {
    font-size: 1.1rem;
}

/* Treatments */
.treatments {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-beige-light);
}

.treatments h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.treatments-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.treatment-card {
    flex: 1 1 300px;
    max-width: 350px;
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(113, 91, 70, 0.05);
    transition: transform 0.3s ease;
    border-top: 4px solid var(--color-terracotta);
    text-align: center;
}

.treatment-card:hover {
    transform: translateY(-5px);
}

.treatment-icon {
    font-size: 2.5rem;
    color: var(--color-terracotta);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.treatment-card h3 {
    font-size: 1.3rem;
    color: var(--color-brown-dark);
    margin-bottom: var(--spacing-sm);
}

/* Office */
.office {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-white);
}

.office-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.office-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

/* FAQ */
.faq {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-beige-light);
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(113, 91, 70, 0.2);
}

.faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: var(--spacing-sm) 0;
    font-size: 1.2rem;
    font-family: var(--font-serif);
    color: var(--color-brown-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--color-terracotta);
}

.faq-question.active::after {
    content: '-';
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding-bottom: var(--spacing-sm);
    color: var(--color-brown-dark);
}

/* CTA */
.cta {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background-color: var(--color-terracotta);
    color: var(--color-white);
}

.cta h2 {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-white);
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn-primary {
    background-color: var(--color-white);
    color: var(--color-terracotta);
}

.cta .btn-primary:hover {
    background-color: var(--color-beige);
}

/* Footer */
.footer {
    background-color: var(--color-brown-dark);
    color: var(--color-beige-light);
    padding: var(--spacing-md) 0;
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.developed-by {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
}

.head-logo {
    height: 20px;
    width: auto;
    opacity: 0.7;
    transition: opacity 0.3s ease;
    vertical-align: middle;
}

.head-logo:hover {
    opacity: 1;
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        text-align: center;
        justify-content: center;
    }
}

/* Carousel */
.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(113, 91, 70, 0.1);
}

.carousel-inner {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.carousel-item {
    min-width: 100%;
    box-sizing: border-box;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: 0; /* Reset border radius for inner images as container has it */
    box-shadow: none; /* Reset shadow */
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(113, 91, 70, 0.5);
    color: white;
    border: none;
    padding: 10px 15px;
    cursor: pointer;
    font-size: 1.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
    z-index: 10;
}

.carousel-control:hover {
    background-color: rgba(159, 85, 53, 0.8);
}

.carousel-control.prev {
    left: 10px;
}

.carousel-control.next {
    right: 10px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        /* Keep row to have logo and burger side by side */
        flex-direction: row; 
        justify-content: space-between;
        align-items: center;
        position: relative;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .logo-img {
        max-height: 50px;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-beige-light);
        padding: var(--spacing-md);
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
        display: none; /* Hidden by default */
        text-align: center;
    }

    .nav.active {
        display: block;
    }

    .nav ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    /* Centering elements */
    body {
        text-align: center;
    }

    .hero, .about, .differentials, .treatments, .office, .faq, .cta, .footer {
        text-align: center;
    }

    .hero h1 {
        font-size: 2.5rem;
        margin-left: auto;
        margin-right: auto;
    }

    .about-container, .office-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-image, .office-image {
        order: -1;
        margin-bottom: var(--spacing-md);
    }

    .differentials-grid, .treatments-grid {
        justify-content: center;
    }

    .differential-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .faq-question {
        text-align: center;
        justify-content: center;
        gap: 10px;
    }
    
    .faq-answer {
        text-align: center;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
        justify-content: center;
    }
}

/* WhatsApp Float Button */
.whatsapp-float {
    position: fixed;
    width: 60px;
    height: 60px;
    bottom: 40px;
    right: 40px;
    background-color: #25d366;
    color: #FFF;
    border-radius: 50%;
    text-align: center;
    font-size: 30px;
    box-shadow: 2px 2px 3px #999;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.whatsapp-float:hover {
    background-color: #128C7E;
    transform: scale(1.1);
    color: #FFF;
}

@media (max-width: 768px) {
    .whatsapp-float {
        width: 50px;
        height: 50px;
        bottom: 20px;
        right: 20px;
        font-size: 25px;
    }
}