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

/* ============================= */
/* HEADER */
/* ============================= */
header {
    position: absolute;
    width: 100%;
    background: rgba(10,25,50,0.85);
    backdrop-filter: blur(4px);
    padding: 15px 30px;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 1000;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}

/* ============================= */
/* NAVIGATION */
/* ============================= */
nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 17px;
    font-weight: 600;
    padding: 8px 14px;
    transition: 0.3s ease;
    border-radius: 6px;
}

nav ul li a:hover,
nav ul li a.active {
    border-bottom: 3px solid #ff8c00;
    background: rgba(255,255,255,0.15);
}

/* ============================= */
/* DROPDOWN */
/* ============================= */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: #0072ff;
    min-width: 170px;
    padding: 10px 0;
    z-index: 999;
}

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

.dropdown-menu li {
    width: 100%;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    font-size: 16px;
}

.dropdown-menu li a:hover {
    background: rgba(255,255,255,0.25);
}

/* ============================= */
/* MOBILE MENU */
/* ============================= */
.menu-icon {
    display: none;
    font-size: 28px;
    cursor: pointer;
    color: #fff;
}

@media(max-width: 768px){

    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        right: 0;
        background: rgba(10,25,50,0.95);
        width: 220px;
        flex-direction: column;
        padding: 15px 0;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
    }

    nav ul.show {
        display: flex;
    }

    .menu-icon {
        display: block;
    }

    .dropdown-menu {
        position: relative;
        top: 0;
        box-shadow: none;
        background: rgba(255,255,255,0.1);
    }
}

/* ============================= */
/* HERO SECTION */
/* ============================= */
.hero {
    height: 100vh;
    background-image: url('../../image/home_page.png');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;

    display: flex;
    align-items: center;
    padding-left: 90px;
    color: white;
    overflow: hidden;
}

.hero-content {
    position: relative;
    max-width: 1000px;
    width: 100%;
    min-height: 400px;
    z-index: 2;
padding: 0 20px;
}

.hero-text {
color: white;
    font-size: 48px;
    font-weight: bold;    
transition: opacity 0.4s ease;
}

.hero-text h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.3;
    margin: 0;
}

/* ============================= */
/* BUTTON */
/* ============================= */
.hero .btn {
    display: inline-block;
    padding: 12px 28px;
    background: #ff8c00;
    color: #fff;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    cursor: pointer;
    transition: 0.3s ease;
}

.hero .btn:hover {
    background: #e67600;
}

/* ============================= */
/* HERO IMAGE SECTION */
/* ============================= */
.hero-images {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    animation: fadeIn 0.4s ease-in-out;
    max-height: 100%;
    overflow: auto;
}

.hero-images img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 15px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
}

/* SIDE-BY-SIDE IMAGES */
.image-row {
    display: flex;
    gap: 30px;
    justify-content: center;
    width: 100%;
}

.image-row img {
    width: 40%;
    border-radius: 15px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}

.image-row img:hover {
    transform: scale(1.05);
}

.show-less {
    margin-top: 10px;
    background: #ffffff;
    color: #0a1932;
}

.show-less:hover {
    background: #f0f0f0;
}

/* ============================= */
/* SERVICES SECTION */
/* ============================= */
.white-bg {
    background: #f2f2f2;
    padding-top: 120px;
}

.services {
    margin-top: -120px;
    display: flex;
    justify-content: center;
    gap: 35px;
    padding: 0 80px 80px;
}

.card {
    flex: 1;
    padding: 50px 30px;
    border-radius: 10px;
    color: #fff;
    text-align: center;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
    transition: 0.3s;
    text-decoration: none;
}

.card:hover {
    transform: translateY(-10px);
    opacity: 0.95;
}

.card i {
    font-size: 45px;
    margin-bottom: 20px;
}

.card h3 {
    font-weight: 600;
    line-height: 1.4;
}

.card-blue { background: linear-gradient(135deg, #2b8cff, #1c6ed5); }
.card-gray { background: linear-gradient(135deg, #9e9e9e, #6e6e6e); }
.card-orange { background: linear-gradient(135deg, #ff9a2f, #ff7b00); }

/* ============================= */
/* ANIMATION */
/* ============================= */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================= */
/* RESPONSIVE DESIGN */
/* ============================= */
@media(max-width: 992px){

    .hero {
        height: auto;
        padding: 120px 40px;
        background-position: center;
    }

    .hero-text h1 {
        font-size: 34px;
    }

    .image-row {
        flex-direction: column;
        align-items: center;
    }

    .image-row img {
        width: 80%;
    }

    .services {
        flex-direction: column;
        margin-top: -60px;
        padding: 0 30px 50px;
    }
}

.module{
    background:white;
    margin:10px 0;
    border-radius:8px;
    cursor:pointer;
    box-shadow:0 4px 8px rgba(0,0,0,0.2);
}

.module-header{
    padding:15px;
    font-size:18px;
    font-weight:bold;
    color:#333;
}

.module-header:hover{
    background:#f1f1f1;
}

.topic-list{
    display:none;
    padding:10px 20px 20px;
}

.topic{
    background:#f9f9f9;
    padding:8px;
    margin:5px 0;
    border-radius:5px;
}

.icon{
    color:#ff6b6b;
    margin-right:10px;
}