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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo-img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
}

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

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover, .nav-menu a.active {
    color: #ffd700;
}

.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #1e3c72;
    min-width: 220px;
    padding: 10px 0;
    border-radius: 5px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    list-style: none;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    white-space: nowrap;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Slider */
.hero-slider {
    margin-top: 70px;
    position: relative;
    width: 100%;
    height: 85vh;
    overflow: hidden;
}

.slider-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide {
    display: none;
    width: 100%;
    height: 100%;
}

.slide.active {
    display: block;
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    color: white;
    border: none;
    font-size: 2rem;
    padding: 10px 20px;
    cursor: pointer;
    z-index: 10;
}

.slider-btn:hover {
    background: rgba(0,0,0,0.8);
}

.prev { left: 20px; }
.next { right: 20px; }

.slider-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
}

.dot.active {
    background: #ffd700;
}

.cta-overlay {
    position: absolute;
    bottom: 50px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(45deg, #ffd700, #ffed4e);
    color: #1e3c72;
    padding: 15px 40px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.2rem;
    box-shadow: 0 5px 20px rgba(255,215,0,0.4);
    transition: transform 0.3s;
}

.cta-button:hover {
    transform: translateY(-3px);
}

/* Sections */
.about-company, .why-choose, .home-products {
    padding: 80px 0;
}

.about-company {
    background: #f8fafc;
}

.about-company h2, .why-choose h2, .home-products h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e3c72;
    margin-bottom: 2rem;
}

.about-company p {
    max-width: 900px;
    margin: 0 auto 20px;
    font-size: 1.1rem;
    text-align: justify;
    line-height: 1.8;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.products-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.product-item {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.product-item:hover {
    transform: translateY(-5px);
}

.product-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.product-item h3 {
    padding: 1rem;
    color: #1e3c72;
}

.learn-more {
    display: block;
    padding: 1rem;
    color: #2a5298;
    text-decoration: none;
    font-weight: 600;
}

/* Chatbot */
.chatbot-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.chatbot-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(45deg, #1e3c72, #2a5298);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    cursor: pointer;
    box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

.chatbot-window {
    display: none;
    position: absolute;
    bottom: 80px;
    right: 0;
    width: 300px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.3);
}

.chatbot-window.active {
    display: block;
}

.chatbot-header {
    background: linear-gradient(45deg, #1e3c72, #2a5298);
    color: white;
    padding: 15px;
    border-radius: 10px 10px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chatbot-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.chatbot-body {
    padding: 20px;
}

.chatbot-message {
    background: #f0f4f8;
    padding: 10px;
    border-radius: 10px;
    margin-bottom: 15px;
}

.chatbot-options button {
    display: block;
    width: 100%;
    padding: 10px;
    margin: 5px 0;
    background: #1e3c72;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.chatbot-options button:hover {
    background: #2a5298;
}

/* Footer */
.footer {
    background: #1a202c;
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: #ffd700;
}

.footer-section a {
    color: #cbd5e0;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: #ffd700;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #2d3748;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #1e3c72;
        flex-direction: column;
        padding: 1rem;
    }

    .nav-menu.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
    }

    .dropdown-menu {
        position: static;
        display: none;
        background: #2a5298;
    }

    .dropdown.active .dropdown-menu {
        display: block;
    }

    .hero-slider {
        height: 50vh;
    }

    .logo-text {
        font-size: 1.2rem;
    }
}