:root {
    /* Cores */
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #3f37c9;
    --white: #ffffff;
    --light: #f8f9fa;
    --light-gray: #e9ecef;
    --gray: #adb5bd;
    --dark: #222529;
    --success: #4cc9f0;
    --error: #f72585;
    --low-priority: #10b981;
    --medium-priority: #f59e0b;
    --high-priority: #ef4444;
    /* Sombras */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    /* Bordas */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    /* Transições */
    --transition: all 0.3s ease;
    /* Espaçamento fluido */
    --spacing-sm: clamp(0.5rem, 2vw, 0.75rem);
    --spacing-md: clamp(1rem, 3vw, 1.25rem);
    --spacing-lg: clamp(1.5rem, 4vw, 2rem);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--light);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    font-size: clamp(14px, 2vw, 16px);
    -webkit-overflow-scrolling: touch;
}

/* Container base */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Navbar */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
    padding: var(--spacing-sm) 0;
    height: 60px;
}

.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.nav-links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg);
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
}

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

.nav-links a {
    position: relative;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    padding: var(--spacing-md);
    font-size: clamp(1.25rem, 5vw, 1.5rem);
    min-height: 48px;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.nav-links a:hover,
.nav-links a:focus {
    color: var(--primary);
    outline: none;
}

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

.nav-links a:hover::after,
.nav-links a:focus::after {
    width: 100%;
}

.nav-links .btn-primary {
    background-color: var(--primary);
    color: var(--white) !important;
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-md);
    text-align: center;
    font-weight: 600;
    min-height: 48px;
    border-radius: var(--radius-sm);
    width: 100%;
    max-width: 300px;
}

.nav-links .btn-primary:hover,
.nav-links .btn-primary:focus {
    background-color: var(--primary-dark);
    color: var(--white) !important;
    outline: none;
}

.hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    font-size: clamp(1.25rem, 4vw, 1.5rem);
    color: var(--dark);
    transition: var(--transition);
}

.hamburger:hover,
.hamburger:focus {
    color: var(--primary);
    outline: none;
}

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--light), var(--white));
    position: relative;
    padding: calc(60px + var(--spacing-lg)) 0 var(--spacing-lg);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(67, 97, 238, 0.2), transparent);
    border-radius: 50%;
    z-index: 0;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--spacing-md);
}

.hero-content h1 {
    background: linear-gradient(90deg, var(--dark), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: clamp(1.75rem, 8vw, 2.5rem);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.hero-content p {
    font-size: clamp(0.875rem, 3vw, 1rem);
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}

.cta-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.btn-primary,
.btn-secondary {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: clamp(0.875rem, 3vw, 1rem);
    border-radius: var(--radius-sm);
    text-decoration: none;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    width: 100%;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--primary-dark);
    color: var(--white);
    outline: none;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--primary);
    color: var(--white);
    outline: none;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    max-height: 250px;
    object-fit: contain;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Features */
.features {
    padding: var(--spacing-lg) 0;
}

.features h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.subtitle {
    font-size: clamp(0.875rem, 3vw, 1rem);
    color: var(--gray);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card .icon {
    font-size: clamp(1.5rem, 5vw, 2rem);
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.feature-card h3 {
    font-size: clamp(1rem, 4vw, 1.25rem);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: clamp(0.75rem, 3vw, 0.875rem);
    color: var(--gray);
}

/* How It Works */
.how-it-works {
    padding: var(--spacing-lg) 0;
    background-color: var(--light-gray);
}

.how-it-works h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.step {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.step-number {
    width: clamp(36px, 10vw, 40px);
    height: clamp(36px, 10vw, 40px);
    background-color: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: clamp(0.875rem, 3vw, 1rem);
    transition: var(--transition);
}

.step:hover .step-number {
    transform: scale(1.1);
    background-color: var(--primary-dark);
}

.step h3 {
    font-size: clamp(1rem, 4vw, 1.25rem);
}

.step p {
    font-size: clamp(0.75rem, 3vw, 0.875rem);
    color: var(--gray);
}

/* Testimonials */
.testimonials {
    padding: var(--spacing-lg) 0;
}

.testimonials h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.testimonial-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.testimonial-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
    max-width: 400px;
}

.testimonial-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: border-color 0.3s ease;
}

.testimonial-card:hover::after {
    border-color: var(--primary);
}

.testimonial-card p {
    font-size: clamp(0.75rem, 3vw, 0.875rem);
    color: var(--gray);
    margin-bottom: var(--spacing-sm);
}

.author-info span {
    font-size: clamp(0.75rem, 3vw, 0.875rem);
}

/* CTA */
.cta {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    padding: var(--spacing-lg) 0;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.2), transparent);
    transform: translate(-50%, -50%) rotate(45deg);
    animation: pulse 6s infinite;
}

.cta h2 {
    font-size: clamp(1.5rem, 6vw, 2rem);
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.cta p {
    font-size: clamp(0.875rem, 3vw, 1rem);
    color: var(--light-gray);
    margin-bottom: var(--spacing-md);
}

.cta .btn-primary {
    background-color: var(--white);
    color: var(--primary);
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

.cta .btn-primary:hover,
.cta .btn-primary:focus {
    background-color: var(--light);
    color: var(--primary-dark);
    outline: none;
}

@keyframes pulse {
    0%, 100% {
        transform: translate(-50%, -50%) rotate(45deg) scale(1);
        opacity: 0.2;
    }
    50% {
        transform: translate(-50%, -50%) rotate(45deg) scale(1.2);
        opacity: 0.4;
    }
}

/* Footer */
.footer {
    background-color: var(--dark);
    padding: var(--spacing-lg) 0;
    color: var(--white);
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.link-group ul li {
    margin-bottom: var(--spacing-sm);
}

.link-group a {
    position: relative;
    color: var(--white);
    text-decoration: none;
    font-size: clamp(0.75rem, 3vw, 0.875rem);
    padding: var(--spacing-sm) 0;
    display: block;
    transition: var(--transition);
}

.link-group a:hover,
.link-group a:focus {
    color: var(--primary);
    outline: none;
}

.link-group a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--primary);
    transition: width 0.3s ease;
}

.link-group a:hover::after,
.link-group a:focus::after {
    width: 100%;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray);
    text-align: center;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
}

.social-icons a {
    width: clamp(36px, 10vw, 40px);
    height: clamp(36px, 10vw, 40px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    border: 1px solid var(--gray);
    border-radius: 50%;
    font-size: clamp(0.875rem, 3vw, 1rem);
    transition: var(--transition);
}

.social-icons a:hover,
.social-icons a:focus {
    border-color: var(--primary);
    background-color: var(--primary);
    outline: none;
}

/* Animações */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

/* Reduzir animações */
@media (prefers-reduced-motion: reduce) {
    .animate-fadeInUp,
    .animate-slideInLeft,
    .animate-slideInRight,
    .animate-feature,
    .cta::before,
    .nav-links {
        animation: none !important;
        transition: none !important;
        transform: none !important;
        opacity: 1 !important;
    }
}

/* Breakpoints para responsividade */
@media (max-width: 480px) {
    .container {
        padding: var(--spacing-lg); /* Increased for mobile */
    }

    .hero-content h1 {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .hero-content p {
        font-size: clamp(0.75rem, 3vw, 0.875rem);
    }

    .hero-image img {
        max-height: 200px;
    }

    .features-grid {
        gap: var(--spacing-sm);
    }

    .feature-card {
        padding: var(--spacing-sm);
    }

    .step {
        padding: var(--spacing-sm);
    }

    .testimonial-card {
        padding: var(--spacing-sm);
    }

    .cta .btn-primary {
        max-width: 100%;
    }
}

@media (min-width: 640px) {
    .hero .container {
        flex-direction: row;
        align-items: center;
        text-align: left;
         padding: var(--spacing-lg);
        
    }

    .hero-content {
        flex: 1;
    }

    .hero-image {
        flex: 1;
    }

    .hero-content h1 {
        font-size: clamp(2rem, 6vw, 3rem);
    }

    .hero-content p {
        font-size: clamp(0.875rem, 3vw, 1rem);
    }

    .cta-buttons {
        flex-direction: row;
        width: auto;
        max-width: none;
    }

    .btn-primary,
    .btn-secondary {
        width: auto;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .hero-image img {
        max-height: 300px;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }

    .steps {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .step {
        flex: 1;
        min-width: 220px;
    }

    .testimonial-cards {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .testimonial-card {
        flex: 1;
        min-width: 220px;
    }

    .footer-content {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .footer-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: space-between;
    }

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

@media (min-width: 768px) {
    .container {
        padding: var(--spacing-lg);
      
    }

    .navbar {
        height: 70px;
    }

    .nav-links {
        display: flex;
        flex-direction: row;
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        backdrop-filter: none;
        padding: 0;
        justify-content: flex-end;
        align-items: center;
        gap: var(--spacing-md);
        transform: none;
    }

    .nav-links a {
        font-size: 1rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .nav-links .btn-primary {
        margin: 0;
        padding: var(--spacing-sm) var(--spacing-md);
        width: auto;
    }

    .hamburger {
        display: none;
    }

    .hero-content h1 {
        font-size: clamp(2.25rem, 6vw, 3.5rem);
    }

    .hero-content p {
        font-size: clamp(1rem, 3vw, 1.125rem);
    }

    .hero-image img {
        max-height: 350px;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }

    .step {
        min-width: 250px;
    }

    .testimonial-card {
        min-width: 250px;
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .hero-content h1 {
        font-size: clamp(2.5rem, 5vw, 4rem);
    }

    .hero-image img {
        max-height: 400px;
    }

    .step {
        min-width: 300px;
    }
}

@media (min-width: 1280px) {
    .container {
        max-width: 1200px;
    }

    .hero-image img {
        max-height: 450px;
    }

    .feature-card h3 {
        font-size: 1.5rem;
    }

    .feature-card p {
        font-size: 1rem;
    }
}

@media (min-width: 1600px) {
    .container {
        max-width: 1400px;
    }

    .hero-content h1 {
        font-size: clamp(3rem, 4vw, 4.5rem);
    }

    .hero-content p {
        font-size: 1.25rem;
    }

    .features-grid {
        gap: var(--spacing-lg);
    }

    .feature-card {
        padding: var(--spacing-lg);
    }
}