:root {
    --bs-primary-rgb: 0, 86, 179;
    --bs-btn-hover-bg: 0, 68, 148;
    --bs-btn-bg: 0, 86, 179;
}

.btn-warning {
    display: inline-block;
    background-color: #fd7e14;
    color: #fff;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease;
    border-color: transparent;
}

.btn-warning:hover {
    background-color: #ed720d;
    color: #fff;
    border-color: transparent;
}

header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    font-weight: bold;
    font-size: 1.5rem;
    color: #0056b3;
    text-decoration: none;
}

.logo img {
    margin-right: 10px;
    border-radius: 4px;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #0056b3;
}

.hero {
    margin-top: 56px;
    position: relative;
    background-size: cover;
    background-position: center;
    min-height: calc(100vh - 56px);
    background: url(../images/hero-bg/hero-bg.png) no-repeat center center / cover !important;
    /* Full viewport height */
    color: white;
}

.hero.en-bg {
    /* background: linear-gradient(rgba(0, 86, 179, 0.5), rgba(0, 86, 179, 0.5)), url(../images/hero-bg/en.png) no-repeat center center / cover !important; */
    background: url(../images/hero-bg/hero-bg.png) no-repeat center center / cover !important;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    /* Dark overlay for contrast */
}

.hero-content {
    position: relative;
    z-index: 1;
    margin: 150px 0;
}

.card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.products .card:hover,
.applications .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.applications ul,
ul.custom-check {
    list-style: none;
    padding-left: 0;
    margin-bottom: 20px;
}

.applications ul li,
ul.custom-check li {
    padding-left: 25px;
    position: relative;
    margin-bottom: 10px;
}

.applications ul li::before,
ul.custom-check li::before {
    content: '✔️';
    position: absolute;
    left: 0;
}

footer {
    background-color: #1a1a1a;
    color: #e0e0e0;
    padding-top: 3rem;
    padding-bottom: 1rem;
}

footer a {
    color: #e0e0e0;
    text-decoration: none;
}

footer a:hover {
    color: #ff8c00;
}

.footer-title {
    color: #ffffff;
    font-weight: bold;
    border-bottom: 2px solid #ff8c00;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.contact-info i {
    color: #ff8c00;
    margin-right: 0.75rem;
}

.copyright {
    border-top: 1px solid #333;
    padding-top: 1rem;
    margin-top: 2rem;
    font-size: 0.9rem;
}

.row .d-flex.align-items-stretch .card {
    width: 100%;
}

.img-fluid-air {
    max-width: 100%;
    height: 100%;
    object-fit: cover;
}