:root {
    --primary-color: #1a73e8;
    --secondary-color: #4285f4;
    --text-color: #202124;
    --light-text: #5f6368;
    --background-color: #ffffff;
    --section-bg: #f8f9fa;
    --border-color: #dadce0;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


/* Navigation */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--background-color);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.logo img {
    height: 30px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

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

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

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    transition: var(--transition);
}


/* Hero Section */

.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('assets/201503200029310.sgbig.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.5rem;
    opacity: 0.9;
}


/* Sections */

.section {
    padding: 5rem 0;
    background-color: var(--section-bg);
}

.section:nth-child(even) {
    background-color: var(--background-color);
}

.section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1rem;
}

.border {
    width: 60px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 0 auto 2rem;
}

.sub-heading {
    text-align: center;
    font-size: 1.2rem;
    color: var(--light-text);
    margin-bottom: 2rem;
}

.feature-list {
    list-style: none;
    text-align: center;
    margin: 2rem 0;
}

.feature-list li {
    margin: 1rem 0;
    font-size: 1.1rem;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.features p {
    padding: 1.5rem;
    background-color: var(--background-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.description {
    max-width: 800px;
    margin: 2rem auto;
    text-align: center;
    color: var(--light-text);
}


/* Buttons */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
    margin: 1rem auto;
    text-align: center;
}

.btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

.btn-container {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 2rem 0;
}


/* Footer */

footer {
    background-color: var(--text-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    gap: 2rem;
}

.footer-logo img {
    /* filter: brightness(0) invert(1);*/
    transition: var(--transition);
}

.footer-logo img:hover {
    opacity: 0.8;
}

.footer-contact h3 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-contact p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: inline-block;
    transition: var(--transition);
}

.social-links a:hover {
    transform: translateY(-2px);
}

.social-links svg {
    color: white;
    opacity: 0.8;
    transition: var(--transition);
}

.social-links a:hover svg {
    opacity: 1;
    transform: translateY(-2px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}


/* About Section */

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-features {
    margin-top: 2rem;
}

.about-features h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    text-align: left;
}

.about-features h3:first-child {
    margin-top: 0;
}

.about-features p {
    margin-bottom: 1.5rem;
    text-align: left;
}

.about-features .feature-list {
    text-align: left;
    margin: 1rem 0 2rem;
}

.about-features .feature-list li {
    margin: 1rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.about-features .feature-list li::before {
    content: "•";
    color: var(--primary-color);
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}


/* Responsive Design */

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--background-color);
        flex-direction: column;
        padding: 1rem;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    }
    .nav-links.active {
        display: flex;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .hero-content p {
        font-size: 1.2rem;
    }
    .section h2 {
        font-size: 2rem;
    }
    .features {
        grid-template-columns: 1fr;
    }
    .about-features h3 {
        font-size: 1.3rem;
    }
    .about-features p,
    .about-features .feature-list {
        font-size: 1rem;
    }
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }
    .section {
        padding: 3rem 0;
    }
}