:root {
    --dark-blue: #00054d;
    --orange: #ff720d;
    --white: #ffffff;
    --pastel-orange: #fbc39a;
}

/* Base and General Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    color: var(--dark-blue);
    line-height: 1.6;
    background-color: var(--white);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
    color: var(--white);
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 1rem;
}

p {
    font-weight: 300;
}

.subtitle {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 1.1rem;
    color: #555;
}

.section-container {
    padding: 6rem 0;
}

.bg-light {
    background-color: #f7f9fc;
}

.bg-dark {
    background-color: var(--dark-blue);
    color: var(--white);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--dark-blue);
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

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

.logo {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-links {
    list-style: none;
    display: none; /* Hidden by default for mobile-first approach */
    flex-direction: column;
    width: 100%;
    text-align: center;
    position: absolute;
    top: 60px;
    left: 0;
    background-color: var(--dark-blue);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    padding: 1rem 0;
    transition: transform 0.3s ease-in-out;
    transform: translateY(-100%);
}

.nav-links.active {
    display: flex;
    transform: translateY(0);
}

.nav-links li {
    padding: 1rem 0;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.menu-toggle {
    display: block; /* Show hamburger on mobile */
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--white);
    margin: 5px 0;
    transition: all 0.3s ease-in-out;
}

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

.menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 5, 77, 0.8), rgba(0, 5, 77, 0.8)), url('https://via.placeholder.com/1920x1080.png?text=Hero+Image') no-repeat center center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    padding-top: 60px; /* Offset for fixed navbar */
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: var(--orange);
    color: var(--white);
    padding: 1rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.cta-button:hover {
    background-color: #e56500;
    transform: translateY(-3px);
}

/* Services and Plan Cards */
.card-grid, .plan-grid {
    display: grid;
    gap: 2rem;
}

.service-card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.icon-placeholder {
    width: 60px;
    height: 60px;
    background-color: var(--pastel-orange);
    border-radius: 50%;
    margin: 0 auto 1rem;
}

.plan-card {
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 2.5rem 1.5rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.plan-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.plan-card.featured {
    background-color: var(--orange);
    color: var(--white);
    border-color: var(--orange);
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.plan-card.featured .plan-cta-button {
    background-color: var(--dark-blue);
}

.plan-card.featured .plan-cta-button:hover {
    background-color: #00022a;
}

.plan-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.plan-desc {
    margin-bottom: 1.5rem;
}

.price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--orange);
}

.plan-card.featured .price {
    color: var(--white);
}

.price span {
    font-size: 1rem;
    font-weight: 400;
}

.plan-cta-button {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.plan-cta-button:hover {
    background-color: #00022a;
}

/* "Como Funciona" Section */
.step-grid {
    display: grid;
    gap: 2rem;
}

.step-card {
    text-align: center;
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--pastel-orange);
    margin-bottom: 1rem;
}

/* "O que é Conasi" Section */
.o-que-e-grid {
    display: grid;
    gap: 2rem;
}

.o-que-e-grid h2 {
    text-align: left;
}

.o-que-e-grid p {
    font-weight: 400;
    font-size: 1.1rem;
}

.o-que-e-grid img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* Footer */
.footer {
    background-color: #000333;
    color: var(--white);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: 2rem;
}

.footer-block h4 {
    color: var(--pastel-orange);
    margin-bottom: 1rem;
}

.social-icons a {
    color: var(--white);
    margin: 0 10px;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: var(--orange);
}

.copyright {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.fade-in.show {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.fade-in-up.show {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.slide-in-left.show {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 1s ease-out, transform 1s ease-out;
}

.slide-in-right.show {
    opacity: 1;
    transform: translateX(0);
}

.delay-1 { transition-delay: 0.3s; }
.delay-2 { transition-delay: 0.6s; }

/* Media Queries (Desktop) */
@media (min-width: 768px) {
    .hero-content h1 {
        font-size: 3.5rem;
    }

    .hero-content p {
        font-size: 1.3rem;
    }

    .navbar .container {
        flex-direction: row;
        justify-content: space-between;
    }

    .nav-links {
        display: flex;
        flex-direction: row;
        position: static;
        width: auto;
        box-shadow: none;
        padding: 0;
        transform: translateY(0);
    }

    .nav-links li {
        padding: 0 1rem;
    }

    .menu-toggle {
        display: none;
    }

    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .plan-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .step-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .o-que-e-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
        gap: 4rem;
    }

    .footer-content {
        flex-direction: row;
        text-align: left;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}