:root {
    /* Primary brand colors */
    --primary: #0E8B8E;
    --primary-dark: #0A6D70;
    --primary-light: #35A5A8;
    --secondary: #F89C36;
    --secondary-dark: #E57F17;
    --accent: #E74C3C;

    /* Neutral colors */
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-family-heading: 'Poppins', var(--font-family-base);

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border radius */
    --border-radius-sm: 0.125rem;
    --border-radius: 0.25rem;
    --border-radius-md: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    --border-radius-2xl: 1rem;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

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

html,
body {
    font-family: var(--font-family-base);
    font-size: 16px;
    line-height: 1.5;
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    scroll-behavior: smooth;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--neutral-900);
}

h1 {
    font-size: 3.5rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-6);
}

h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-4);
}

p {
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease-in-out;
}

a:hover {
    color: var(--primary-dark);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
    cursor: pointer;
    text-align: center;
    border: none;
    gap: var(--spacing-2);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
    text-decoration: none;
}

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

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    color: white;
    text-decoration: none;
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 1.125rem;
}

/* Header */
.header {
    background-color: white;
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo img {
    height: 40px;
    margin-right: var(--spacing-2);
}

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

.nav-list {
    display: flex;
    list-style: none;
    margin-right: var(--spacing-6);
}

.nav-item {
    margin-left: var(--spacing-6);
}

.nav-link {
    color: var(--neutral-700);
    font-weight: 500;
}

.nav-link:hover {
    color: var(--primary);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--neutral-700);
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding-top: 160px;
    padding-bottom: var(--spacing-20);
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    color: white;
    position: relative;
    overflow: hidden;
}

.hero:before {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 500px;
    height: 500px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.hero-container {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero h1 {
    color: white;
    margin-bottom: var(--spacing-4);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-8);
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-4);
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 10px 15px rgba(0, 0, 0, 0.2));
}

/* Features Section */
.features {
    padding: var(--spacing-20) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
}

.section-header p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--neutral-600);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-6);
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    background-color: rgba(14, 139, 142, 0.1);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-4);
    color: var(--primary);
    font-size: 1.5rem;
}

/* How It Works Section */
.how-it-works {
    padding: var(--spacing-20) 0;
    background-color: var(--neutral-100);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-8);
    counter-reset: step;
}

.step {
    position: relative;
    padding-left: 60px;
}

.step:before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background-color: var(--primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.25rem;
}

/* Testimonials */
.testimonials {
    padding: var(--spacing-20) 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

.testimonial-card {
    background-color: white;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
}

.testimonial-content {
    font-style: italic;
    margin-bottom: var(--spacing-4);
    color: var(--neutral-700);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-light);
    margin-right: var(--spacing-3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
}

.testimonial-info h4 {
    margin-bottom: var(--spacing-1);
    font-size: 1rem;
}

.testimonial-info p {
    margin-bottom: 0;
    color: var(--neutral-500);
    font-size: 0.875rem;
}

/* CTA Section */
.cta {
    padding: var(--spacing-16) 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    text-align: center;
}

.cta h2 {
    color: white;
    margin-bottom: var(--spacing-6);
}

.cta p {
    max-width: 600px;
    margin: 0 auto var(--spacing-8) auto;
    opacity: 0.9;
}

/* Footer */
.footer {
    padding: var(--spacing-12) 0;
    background-color: var(--neutral-800);
    color: var(--neutral-300);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-8);
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--spacing-4);
}

.footer-logo img {
    height: 30px;
    margin-right: var(--spacing-2);
}

.footer-description {
    margin-bottom: var(--spacing-4);
}

.footer-social {
    display: flex;
    gap: var(--spacing-3);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: background-color 0.2s ease;
}

.footer-social a:hover {
    background-color: var(--primary);
}

.footer h4 {
    color: white;
    margin-bottom: var(--spacing-4);
    font-size: 1.125rem;
}

.footer-links {
    list-style: none;
}

.footer-link {
    margin-bottom: var(--spacing-2);
}

.footer-link a {
    color: var(--neutral-300);
    transition: color 0.2s ease;
}

.footer-link a:hover {
    color: white;
}

.footer-bottom {
    margin-top: var(--spacing-12);
    padding-top: var(--spacing-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    font-size: 0.875rem;
    color: var(--neutral-400);
}

/* Media Queries */
@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-container {
        flex-direction: column;
        text-align: center;
    }

    .hero-content {
        margin-bottom: var(--spacing-8);
    }

    .hero-buttons {
        justify-content: center;
    }

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

    .footer-container {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-8) var(--spacing-4);
    }
}

@media (max-width: 768px) {
    .header-container {
        height: 70px;
    }

    .nav-list {
        display: none;
    }

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

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

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

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .hero {
        padding-top: 120px;
        padding-bottom: var(--spacing-12);
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}