/* RESET & VARIABLES */
:root {
    --primary-color: #2c3e50;
    --secondary-color: #e74c3c;
    --bg-color: #ffffff;
    --text-color: #333333;
    --light-gray: #f9f9f9;
    --border-color: #eeeeee;
    --font-family: 'Inter', sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* TOP HEADER */
.top-header {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 10px 0;
    font-size: 14px;
}

.top-header .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
}

.top-header-left span {
    margin-right: 20px;
}

.top-header-left i, .top-header-right i {
    color: var(--secondary-color);
    margin-right: 5px;
}

.top-header-right a {
    color: #ffffff;
    margin-left: 15px;
    transition: color 0.3s;
}

.top-header-right a:hover {
    color: var(--secondary-color);
}

/* HEADER & MENU */
.main-header {
    position: relative;
    width: 100%;
    z-index: 100;
    padding: 20px 0;
    background-color: transparent;
}


.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
}

.logo img {
    height: 60px;
    object-fit: contain;
}

.menu-toggle {
    font-size: 30px;
    color: #fff;
    cursor: pointer;
    transition: transform 0.3s;
}

.menu-toggle:hover {
    transform: scale(1.1);
}

/* FULL SCREEN MENU */
.full-screen-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(255, 255, 255, 0.98);
    z-index: 999;
    display: flex;
    justify-content: center;
    align-items: center;
    transform: translateY(-100%);
    transition: transform 0.5s cubic-bezier(0.77, 0.2, 0.05, 1.0);
    opacity: 0;
}

.full-screen-menu.active {
    transform: translateY(0);
    opacity: 1;
}

.menu-close {
    position: absolute;
    top: 40px;
    right: 50px;
    font-size: 40px;
    color: var(--primary-color);
    cursor: pointer;
    transition: transform 0.3s;
}

.menu-close:hover {
    transform: rotate(90deg);
}

.nav-links {
    text-align: center;
}

.nav-links > li {
    margin: 20px 0;
    position: relative;
}

.nav-links > li > a {
    font-size: 30px;
    font-weight: 600;
    color: var(--primary-color);
    transition: color 0.3s;
}

.nav-links > li > a:hover {
    color: var(--secondary-color);
}

.dropdown-menu {
    display: none;
    background-color: var(--light-gray);
    padding: 10px 0;
    border-radius: 8px;
    margin-top: 10px;
    min-width: 200px;
}

.dropdown-menu li {
    margin: 10px 0;
}

.dropdown-menu a {
    font-size: 18px;
    color: var(--text-color);
    display: block;
    padding: 5px 20px;
    transition: color 0.3s;
}

.dropdown-menu a:hover {
    color: var(--secondary-color);
}

/* HERO BANNER */
.hero-banner {
    position: relative;
    height: 100vh;
    background-image: url('../images/bg01.jpg'); /* using existing bg */
    background-size: cover;
    background-position: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.5); /* overlay */
}

.banner-content {
    position: relative;
    z-index: 10;
}

.banner-content h1 {
    font-size: 60px;
    font-weight: 700;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 24px;
    font-weight: 300;
}

/* ABOUT SECTION */
.about-section {
    padding: 100px 0;
    background-color: var(--bg-color);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 40px;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    font-size: 18px;
    color: #666;
    margin-bottom: 30px;
}

.btn-primary {
    display: inline-block;
    padding: 15px 30px;
    background-color: var(--secondary-color);
    color: #fff;
    border-radius: 30px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.3s;
}

.btn-primary:hover {
    background-color: #c0392b;
    transform: translateY(-3px);
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* REFERENCES SECTION (MARQUEE) */
.references-section {
    padding: 80px 0;
    background-color: var(--light-gray);
    overflow: hidden;
}

.section-title {
    text-align: center;
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 50px;
}

.marquee-container {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
}

.marquee-content {
    display: inline-block;
    animation: marquee 20s linear infinite;
}

.marquee-content img {
    height: 80px;
    margin: 0 40px;
    vertical-align: middle;
    filter: grayscale(100%);
    transition: filter 0.3s;
}

.marquee-content img:hover {
    filter: grayscale(0%);
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* NEWS SECTION */
.news-section {
    padding: 100px 0;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.news-item {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.news-item:hover {
    transform: translateY(-10px);
}

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

.news-info {
    padding: 25px;
}

.news-info h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.news-info p {
    color: #666;
    margin-bottom: 20px;
}

.read-more {
    font-weight: 600;
    color: var(--secondary-color);
}

/* FOOTER */
.main-footer {
    background-color: var(--primary-color);
    color: #fff;
    padding: 80px 0 0;
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-logo img {
    height: 60px;
    filter: brightness(0) invert(1);
    margin-bottom: 20px;
}

.footer-about {
    font-size: 14px;
    color: #ccc;
    margin-bottom: 20px;
    line-height: 1.8;
}

.footer-socials a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    color: #fff;
    margin-right: 10px;
    transition: all 0.3s;
}

.footer-socials a:hover {
    background-color: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-col h3 {
    font-size: 20px;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: var(--secondary-color);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #ccc;
    font-size: 15px;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.footer-contact li {
    position: relative;
    padding-left: 30px;
    margin-bottom: 15px;
    color: #ccc;
    font-size: 14px;
    line-height: 1.6;
}

.footer-contact li i {
    position: absolute;
    left: 0;
    top: 4px;
    color: var(--secondary-color);
}

.footer-bottom {
    background-color: #1a252f;
    text-align: center;
    padding: 20px 0;
    font-size: 14px;
    color: #888;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .about-content {
        flex-direction: column;
    }
    .header-container {
        padding: 0 20px;
    }
    .banner-content h1 {
        font-size: 40px;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
}