:root {
    /* Colors */
    --bg-color: #FFFFFF;
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --accent-color: #0071E3;
    --accent-hover: #0077ED;
    --glass-bg: rgba(255, 255, 255, 0.72);
    --border-color: rgba(0, 0, 0, 0.1);

    /* Shadows */
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.04);
    --shadow-nav: 0 4px 30px rgba(0, 0, 0, 0.03);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --tracking-tighter: -0.02em;
    --tracking-tight: -0.01em;
    --line-height-body: 1.6;
    --line-height-heading: 1.1;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: var(--line-height-body);
    overflow-x: hidden;
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Typography Utilities */
h1,
h2,
h3,
h4 {
    letter-spacing: var(--tracking-tighter);
    line-height: var(--line-height-heading);
    font-weight: 600;
}

p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 60ch;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

section {
    padding: 8rem 0;
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: 72px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100%;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--text-primary);
    letter-spacing: var(--tracking-tighter);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
    align-items: center;
}

/* Hamburger Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

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

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

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

.nav-links a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: opacity 0.2s ease;
}

.nav-links a:hover {
    opacity: 0.7;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.6rem;
    border-radius: 980px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: scale(1.02);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
}

.btn-secondary:after {
    content: ' →';
    transition: transform 0.2s ease;
}

.btn-secondary:hover:after {
    transform: translateX(4px);
    display: inline-block;
}

/* Hero Section */
.hero {
    padding-top: 12rem;
    text-align: center;
    overflow: hidden;
}

.hero h1 {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    max-width: 15ch;
    margin-left: auto;
    margin-right: auto;
}

.hero .sub-headline {
    font-size: 1.5rem;
    margin-bottom: 3rem;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-bottom: 5rem;
}

.hero-image-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: var(--shadow-soft);
    border-radius: 40px;
    overflow: hidden;
    transform: translateY(20px);
    opacity: 0;
    animation: slideUp 1s cubic-bezier(0.2, 0.8, 0.2, 1) forwards 0.3s;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-image-container img {
    width: 100%;
    display: block;
}

/* Features Section */
.features {
    background-color: #FBFBFD;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-header h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem;
}

.step-card {
    padding: 3rem;
    background: white;
    border-radius: 24px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: var(--border-color);
}

.step-number {
    font-size: 0.875rem;
    color: var(--accent-color);
    font-weight: 700;
    margin-bottom: 1rem;
    display: block;
}

.step-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Pricing Section */
.pricing {
    text-align: center;
}

.pricing-card {
    max-width: 500px;
    margin: 3rem auto;
    padding: 4rem;
    background: white;
    border-radius: 32px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-color);
}

.pricing-header h3 {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.price {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 2rem;
}

.price span {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
}

.features-list {
    list-style: none;
    text-align: left;
    margin-bottom: 3rem;
}

.features-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.features-list li::before {
    content: '✓';
    color: var(--accent-color);
    font-weight: 800;
}

/* FAQ Section */
.faq {
    background-color: #FBFBFD;
}

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

.faq-item {
    margin-bottom: 2.5rem;
}

.faq-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

/* Contact Section */
.contact {
    text-align: center;
}

.contact-form {
    max-width: 600px;
    margin: 4rem auto;
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: #FBFBFD;
    font-family: inherit;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background: white;
}

/* WhatsApp Floating Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 64px;
    height: 64px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.4);
    z-index: 9999;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
}

.whatsapp-float:hover {
    transform: scale(1.1) translateY(-5px);
    box-shadow: 0 12px 40px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
    width: 34px;
    height: 34px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
        padding: 4rem 2rem;
        gap: 2rem;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        font-size: 1.5rem;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: 5rem 0;
    }

    .pricing-card {
        padding: 2rem;
    }
}