* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Arial', sans-serif;
}

body {
    background: #eef2f7;
    color: #2d2d2d;
    line-height: 1.6;
    overflow-x: hidden;
    margin: 0;
}

/* Navigation */
nav {
    background: #0066cc;
    padding: 15px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: background 0.3s ease;
}

nav.scrolled {
    background: #004d99;
}

nav .container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    position: relative;
}

nav .logo {
    color: #fff;
    font-size: 1.8em;
    font-weight: 700;
    letter-spacing: 1px;
}

nav .logo span {
    color: #ff9900;
    font-size: 1.1em;
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
    margin: 0;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 1.1em;
    padding: 5px 8px;
    transition: all 0.3s ease;
}

nav ul li a:hover {
    color: #ff9900;
    border-bottom: 2px solid #ff9900;
}

.menu-toggle {
    display: none;
    font-size: 1.6em;
    color: #fff;
    cursor: pointer;
}

/* Language Switch Button */
.lang-switch {
    background: #fff;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin-left: 15px;
}

.lang-switch:hover {
    background: #ff9900;
}

.lang-switch img {
    width: 18px;
    height: 18px;
    display: block;
}

/* Hero Section with Parallax */
.hero {
    position: relative;
    height: 100vh;
    width: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('../images/gp3img2.webp');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    z-index: -1;
    transform: scale(1.1);
    transition: transform 0.1s ease;
}

.hero .container {
    width: 100%;
    max-width: 900px;
    padding: 0 20px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s ease;
}

.hero .container.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero h1 {
    font-size: 3.5em;
    margin-bottom: 15px;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.4em;
    margin-bottom: 30px;
}

.hero .btn {
    background: #ff9900;
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 30px;
    font-size: 1.2em;
    font-weight: bold;
    transition: transform 0.3s ease, background 0.3s ease;
}

.hero .btn:hover {
    background: #e68a00;
    transform: scale(1.05);
}

/* Sections */
section {
    padding: 80px 20px;
    width: 100%;
}

section h2 {
    text-align: center;
    font-size: 2.5em;
    color: #0066cc;
    margin-bottom: 40px;
    position: relative;
}

section h2::after {
    content: '';
    width: 50px;
    height: 4px;
    background: #ff9900;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* About Section */
.about {
    width: 100%;
}

.about .container {
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.about p {
    font-size: 1.2em;
    text-align: center;
    color: #555;
}

/* Products Section */
.products {
    background: #fff;
    padding: 60px 20px;
    width: 100%;
}

.products .container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
    width: 100%;
}

.product-item {
    text-align: center;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 15px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.5s ease;
}

.product-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.product-item img {
    max-width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 10px;
}

.product-item h3 {
    margin: 15px 0;
    color: #0066cc;
    font-size: 1.4em;
}

.product-item p {
    color: #666;
    font-size: 1em;
}

/* Contact Section */
.contact {
    background: linear-gradient(135deg, #0066cc 0%, #004d99 100%);
    color: #fff;
    padding: 60px 20px;
    width: 100%;
}

.contact .container {
    width: 100%;
    max-width: 700px;
    margin: 0 auto;
}

.contact form {
    width: 100%;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-size: 1.1em;
    margin-bottom: 8px;
}

input, textarea {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    background: #fff;
    transition: box-shadow 0.3s ease;
}

input:focus, textarea:focus {
    box-shadow: 0 0 10px rgba(255, 153, 0, 0.5);
    outline: none;
}

textarea {
    min-height: 120px;
}

button {
    background: #ff9900;
    color: #fff;
    padding: 12px;
    border: none;
    border-radius: 10px;
    width: 100%;
    font-size: 1.1em;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    background: #e68a00;
    transform: scale(1.02);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #ff9900;
    color: #fff;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4em;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #e68a00;
    transform: scale(1.1);
}

/* Footer */
footer {
    background: #2d2d2d;
    color: #ccc;
    text-align: center;
    padding: 25px 20px;
    font-size: 0.9em;
    width: 100%;
}

footer a {
    color: #ff9900;
    text-decoration: none;
}

/* Responsive Design */
@media (max-width: 1024px) {
    nav .logo {
        font-size: 1.6em;
    }

    nav ul li {
        margin-left: 20px;
    }

    nav ul li a {
        font-size: 1em;
    }

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

    .hero p {
        font-size: 1.2em;
    }

    .hero .btn {
        padding: 10px 25px;
        font-size: 1.1em;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 25px;
    }

    .product-item img {
        height: 140px;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 10px 0;
    }

    nav .container {
        flex-wrap: wrap;
        padding: 0 15px;
    }

    nav .logo {
        font-size: 1.5em;
    }

    .menu-toggle {
        display: block;
        order: 3;
    }

    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        background: #004d99;
        padding: 15px 0;
        position: absolute;
        top: 100%;
        left: 0;
    }

    nav ul.active {
        display: flex;
    }

    nav ul li {
        margin: 10px 0;
        text-align: center;
    }

    nav ul li a {
        font-size: 1.1em;
        padding: 8px 0;
        display: block;
    }

    .lang-switch {
        position: static;
        margin-left: 10px;
        order: 2;
    }

    .hero {
        height: 80vh;
    }

    .hero h1 {
        font-size: 2.2em;
    }

    .hero p {
        font-size: 1.1em;
    }

    .hero .btn {
        padding: 10px 20px;
        font-size: 1em;
    }

    .hero::before {
        background-attachment: scroll; /* Parallax disabled on mobile */
    }

    section {
        padding: 50px 15px;
    }

    section h2 {
        font-size: 2em;
    }

    .about p {
        font-size: 1.1em;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .product-item img {
        height: 150px;
    }

    .contact .container {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    nav .logo {
        font-size: 1.3em;
    }

    nav .logo span {
        font-size: 1em;
    }

    .menu-toggle {
        font-size: 1.4em;
    }

    .lang-switch {
        width: 24px;
        height: 24px;
        border-radius: 12px;
    }

    .lang-switch img {
        width: 16px;
        height: 16px;
    }

    .hero {
        height: 70vh;
    }

    .hero h1 {
        font-size: 1.8em;
    }

    .hero p {
        font-size: 0.9em;
    }

    .hero .btn {
        padding: 8px 18px;
        font-size: 0.9em;
    }

    .hero .container {
        padding: 0 15px;
    }

    section {
        padding: 40px 10px;
    }

    section h2 {
        font-size: 1.8em;
    }

    .about p {
        font-size: 1em;
    }

    .product-item img {
        height: 130px;
    }

    .product-item h3 {
        font-size: 1.2em;
    }

    .product-item p {
        font-size: 0.9em;
    }

    label {
        font-size: 1em;
    }

    input, textarea {
        padding: 10px;
        font-size: 0.9em;
    }

    textarea {
        min-height: 100px;
    }

    button {
        padding: 10px;
        font-size: 1em;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        font-size: 1.2em;
        bottom: 15px;
        right: 15px;
    }

    footer {
        padding: 20px 15px;
        font-size: 0.8em;
    }
}