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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: #1f2937;
    background: #ffffff;
    line-height: 1.7;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

.section {
    padding: 90px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 42px;
    font-family: 'Poppins', sans-serif;
}

.header {
    position: sticky;
    top: 0;
    z-index: 999;
    background: #111827;
    padding: 15px 0;
}

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

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-wrapper img {
    width: 58px;
}

.logo-wrapper h2 {
    color: #ffffff;
}

.logo-wrapper p {
    color: #d1d5db;
    font-size: 13px;
}

.nav-menu {
    display: flex;
    gap: 28px;
}

.nav-menu a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
}

.btn,
.whatsapp-btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}

.primary-btn,
.whatsapp-btn {
    background: #d62828;
    color: #ffffff;
}

.secondary-btn {
    border: 2px solid #ffffff;
    color: #ffffff;
}

.hero {
    background:
    linear-gradient(rgba(17,24,39,0.9), rgba(17,24,39,0.9)),
    url('../images/slide2.jpg');

    background-size: cover;
    background-position: center;

    padding: 120px 0;
    color: #ffffff;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-tag {
    display: inline-block;
    margin-bottom: 18px;
    background: rgba(255,255,255,0.1);
    padding: 10px 18px;
    border-radius: 40px;
}

.hero h1 {
    font-size: 58px;
    line-height: 1.2;
    margin-bottom: 24px;
    font-family: 'Poppins', sans-serif;
}

.hero h2 {
    color: #f77f00;
    font-size: 28px;
    margin-bottom: 24px;
}

.hero p {
    margin-bottom: 32px;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    gap: 18px;
}

.hero-image img {
    width: 100%;
    max-width: 500px;
}

.about-grid,
.applications-grid,
.product-grid,
.rjuip-features {

    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.info-card,
.product-card {
    background: #f3f4f6;
    padding: 32px;
    border-radius: 14px;
}

.featured-product {
    grid-column: span 2;
}

.featured-product img {
    width: 100%;
    border-radius: 12px;
    margin-bottom: 24px;
}

.product-content ul {
    margin: 20px 0;
    padding-left: 20px;
}

.rjuip-wrapper,
.contact-grid {

    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-form input,
.contact-form textarea {
    padding: 14px;
    border-radius: 8px;
    border: 1px solid #d1d5db;
}

.footer {
    background: #111827;
    color: #ffffff;
    padding-top: 50px;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    padding-bottom: 30px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    padding: 20px 0;
}

.floating-whatsapp {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #25d366;
    color: #ffffff;
    text-decoration: none;
    padding: 14px 22px;
    border-radius: 50px;
    font-weight: 600;
    z-index: 999;
}

@media (max-width: 992px) {

    .hero-grid,
    .contact-grid,
    .footer-grid {
        grid-template-columns: 1fr;
        display: grid;
    }

    .featured-product {
        grid-column: span 1;
    }

    .navbar {
        flex-direction: column;
        gap: 20px;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero h2 {
        font-size: 22px;
    }

    .hero-buttons {
        flex-direction: column;
    }
}

.success-message {
    background: #16a34a;
    color: #ffffff;
    padding: 15px;
    text-align: center;
    font-weight: 600;
}

.error-message {
    background: #dc2626;
    color: #ffffff;
    padding: 15px;
    text-align: center;
    font-weight: 600;
}

.rjuip-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.rjuip-image img {
    width: 100%;
    max-width: 420px;
    height: auto;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.rjuip-wrapper {
    align-items: center;
}