/* CSS Variables */
:root {
    --primary-color: #1E5AA8;
    --primary-dark: #164785;
    --primary-light: #2B6FC4;
    --text-color: #1a1a2e;
    --text-light: #555;
    --background: #ffffff;
    --background-alt: #f8fafc;
    --border-color: #e2e8f0;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

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

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

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

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-color);
    font-weight: 700;
    font-size: 1.25rem;
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.nav-menu .btn {
    padding: 0.5rem 1.25rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e8f4fc 100%);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--text-color);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features Section */
.features {
    padding: 6rem 0;
}

.features h2 {
    font-size: 2.25rem;
    text-align: center;
    margin-bottom: 3.5rem;
    color: var(--text-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border-radius: 12px;
    background: var(--background);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--primary-color));
    border-radius: 12px;
    margin-bottom: 1.25rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-color);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
}

.cta h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.cta p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn-primary:hover {
    background: #f0f0f0;
}

/* Footer */
.footer {
    padding: 3rem 0 2rem;
    background: var(--background-alt);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    color: var(--text-color);
}

.footer-brand img {
    height: 32px;
    width: auto;
}

.footer-social {
    display: flex;
    gap: 1.25rem;
}

.footer-social a {
    color: var(--text-light);
    transition: color 0.2s ease;
}

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

.footer-bottom {
    padding-top: 1.5rem;
    text-align: center;
}

.footer-bottom p {
    color: var(--text-light);
    font-size: 0.9rem;
}

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

    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hero {
        padding: 8rem 0 4rem;
    }

    .hero h1 {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .features {
        padding: 4rem 0;
    }

    .features h2 {
        font-size: 1.75rem;
    }

    .cta {
        padding: 4rem 0;
    }

    .cta h2 {
        font-size: 1.75rem;
    }

    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero h1 {
        font-size: 1.85rem;
    }

    .btn-lg {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}