* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Tahoma, sans-serif;
}

body {
    color: #333;
    background-color: #f9fafb;
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: auto;
}

/* Navigation */
header {
    background: #0f172a;
    padding: 1rem 0;
}

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

.logo {
    color: #fff;
    font-size: 1.2rem;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    color: #cbd5f5;
    text-decoration: none;
    font-weight: 500;
}

nav ul li a:hover {
    color: #ffffff;
}

/* Hero */
.hero {
    background: linear-gradient(rgba(15, 23, 42, 0.7), rgba(15, 23, 42, 0.7)),
                url("https://images.unsplash.com/photo-1581091012184-7b6d9a28d3d4") center/cover no-repeat;
    height: 70vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
}

.hero-content {
    width: 100%;
    padding: 2rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.btn {
    background: #38bdf8;
    color: #0f172a;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

.btn:hover {
    background: #0ea5e9;
}

.download-btn {
    background: #3878f8;
    color: #0f172a;
    padding: 0.75rem 1.5rem;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
}

.download-btn:hover {
    background: #0e62e9;
}

.btn-container {
    text-align: center;
} 


/* Features */
.features {
    padding: 4rem 0;
    background: #ffffff;
}

.features h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

.features p {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: #f1f5f9;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: #0f172a;
}

/* Free Web Version */
.free-web-version {
    padding: 2rem 0;
}

.free-web-version h2 {
    text-align: center;
    margin-bottom: 2rem;
}

/* BabaCAD Home 2020 */
.babacad-home-2020 {
    padding: 2rem 0;
}

.babacad-home-2020 h2 {
    text-align: center;
    margin-bottom: 2rem;
}

/* Gallery */
.gallery {
    padding: 4rem 0;
}

.gallery h2 {
    text-align: center;
    margin-bottom: 2rem;
}

/* BabaCAD Home 2020 */
.babacad-home-2020 {
    padding: 2rem 0;
}

.free-web-version h2 {
    text-align: center;
    margin-bottom: 2rem;
}


.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.image-grid img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    border-radius: 8px;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.video-grid iframe {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 8px;
}

.babacad-img {
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 1.5rem;
}

.babacad-img img {
    max-width: 100%;
}

/* Footer */
footer {
    background: #0f172a;
    color: #cbd5f5;
    padding: 2rem 0;
    text-align: center;
}

footer p {
    margin: 0.3rem 0;
}