/* Reset and Base Styles */
:root {
    --primary-color: #0f172a; /* Azul-marinho (Navy Blue) */
    --secondary-color: #334155; /* Grafite */
    --accent-color: #b49a5b; /* Dourado fosco */
    --accent-hover: #9c8449;
    --bg-color: #ffffff;
    --bg-light: #f8fafc;
    --text-color: #334155;
    --text-light: #64748b;
    --whatsapp-color: #25D366;
    --whatsapp-hover: #1ebd5a;
    
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;
    
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    font-weight: 600;
}

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    font-family: var(--font-body);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--accent-color);
    color: #ffffff;
}

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--accent-color);
    color: var(--accent-color);
}

.btn-outline:hover {
    background-color: var(--accent-color);
    color: #ffffff;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo h1 {
    font-size: 1.25rem;
    margin-bottom: 0.1rem;
    letter-spacing: 0.5px;
}

.logo span {
    font-size: 0.8rem;
    color: var(--text-light);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

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

.nav-list a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-list a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

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

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--primary-color);
    position: relative;
}

.hamburger::before, .hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--primary-color);
    left: 0;
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }

/* Hero Section */
.hero {
    padding-top: calc(100px + var(--spacing-xl));
    padding-bottom: var(--spacing-xl);
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: center;
}

.hero-title {
    color: #ffffff;
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    font-family: var(--font-heading);
    font-style: italic;
}

.hero-text {
    font-size: 1rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-md);
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

/* Expertise Section */
.expertise {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

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

.card {
    background: #ffffff;
    padding: 2.5rem 2rem;
    border-radius: 4px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.card-icon {
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.card-text {
    font-size: 0.95rem;
    color: var(--text-light);
}

/* Differential Section */
.differential {
    padding: var(--spacing-xl) 0;
    background-color: var(--primary-color);
    color: #ffffff;
    text-align: center;
}

.differential .section-title {
    color: #ffffff;
}

.differential-text {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
}

/* Trajectory Section */
.trajectory {
    padding: var(--spacing-xl) 0;
}

.trajectory-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    color: var(--text-light);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    height: 100%;
    width: 1px;
    background-color: rgba(180, 154, 91, 0.3);
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 2.5rem;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: 15px;
    top: 6px;
    width: 11px;
    height: 11px;
    border-radius: 50%;
    background-color: var(--accent-color);
    box-shadow: 0 0 0 4px #ffffff;
}

.timeline-date {
    display: block;
    font-size: 0.85rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.timeline-title {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.timeline-institution {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* Contact Section */
.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--bg-light);
}

.contact-text {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

.contact-card {
    max-width: 500px;
    margin: 0 auto;
    background: #ffffff;
    padding: 3rem 2rem;
    border-radius: 4px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--primary-color);
}

.contact-info svg {
    color: var(--whatsapp-color);
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-lg) 0 var(--spacing-md);
    text-align: center;
    font-size: 0.85rem;
}

.footer-name {
    color: #ffffff;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.footer-location {
    margin-bottom: 1.5rem;
}

.footer-links {
    margin-bottom: 1.5rem;
}

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

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

.separator {
    margin: 0 0.5rem;
    color: rgba(255, 255, 255, 0.2);
}

.footer-disclaimer p {
    margin-bottom: 0.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: rgba(255, 255, 255, 0.5);
}

/* Floating WhatsApp */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--whatsapp-color);
    color: white;
    border-radius: 50px;
    padding: 10px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    z-index: 999;
    transition: all 0.3s ease;
    animation: slideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.whatsapp-float:hover {
    background-color: var(--whatsapp-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
    color: white;
}

.whatsapp-text {
    font-weight: 500;
    font-size: 0.95rem;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .nav {
        gap: 1rem;
    }
    
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #ffffff;
        flex-direction: column;
        padding: 1.5rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
        text-align: center;
        gap: 1rem;
    }
    
    .nav-list.active {
        display: flex;
    }

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

    .nav .btn-outline {
        display: none;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero {
        padding-top: calc(80px + var(--spacing-lg));
    }

    .section-title {
        font-size: 2rem;
    }

    .whatsapp-float {
        bottom: 20px;
        right: 20px;
        padding: 12px;
        border-radius: 50%;
    }

    .whatsapp-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
}