:root {
    --blue-dark: #003B73;
    --blue: #1F6FB2;
    --green-dark: #5B7F29;
    --green: #8BC743;
    --gray-light: #F5F7FA;
    --gray-dark: #333;
    --white: #fff;
}

/* GLOBAL RESET */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", Arial, sans-serif;
}

body {
    background: var(--white);
    color: var(--gray-dark);
}

/* SMOOTH SCROLL */
html {
    scroll-behavior: smooth;
}

/* ----------------------------------------------
   HEADER / NAVIGATION
   ---------------------------------------------- */
header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 60px;
    background: rgba(255,255,255,0.95);
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    box-shadow: 0 3px 12px rgba(0,0,0,0.1);
    backdrop-filter: blur(8px);
}

header img {
    height: 65px;
}

nav a {
    margin: 0 20px;
    text-decoration: none;
    color: var(--gray-dark);
    font-weight: 600;
    font-size: 15px;
    position: relative;
    transition: 0.3s;
}

nav a:hover {
    color: var(--blue);
}

nav a::after {
    content: "";
    width: 0%;
    height: 3px;
    background: var(--blue);
    position: absolute;
    bottom: -5px;
    left: 0;
    transition: 0.3s;
}

nav a:hover::after {
    width: 100%;
}

/* CTA BUTTON */
.btn-primary {
    background: linear-gradient(to right, var(--blue), var(--green-dark));
    color: white !important;
    padding: 12px 25px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: 0.3s;
    pointer-events:none;
}

.btn-primary:hover {
    transform: scale(1.05);
}

/* ----------------------------------------------
   HERO SLIDER
   ---------------------------------------------- */
.hero-slider {
    width: 100%;
    height: 90vh;
    position: relative;
    margin-top: 95px;
    overflow: hidden;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    display: none; /* hide all slides */
}

    .slide.active {
        display: block; /* show only active slide */
    }


.slide-overlay {
    position: absolute;
    z-index: 1;
    pointer-events: none;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.45);
}

.slide-content {
    position: absolute;
    z-index: 2;
    color: white;
    bottom: 30%;
    left: 7%;
    max-width: 500px;
    animation: fadeUp 1.2s ease-in-out;
}

.slide-content h1 {
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 15px;
}

.slide-content p {
    font-size: 20px;
    line-height: 1.6;
    margin-bottom: 25px;
}

.slide-content a {
    pointer-events: auto;
    z-index: 3;
}

/* Fade-up animation */
@keyframes fadeUp {
    0% { opacity: 0; transform: translateY(40px);}
    100% { opacity: 1; transform: translateY(0);}
}

/* ----------------------------------------------
   SECTION TITLES
   ---------------------------------------------- */
.section-title {
    text-align: center;
    font-size: 36px;
    margin-top: 80px;
    margin-bottom: 15px;
    color: var(--blue-dark);
    font-weight: 700;
    animation: fadeUp 1s ease;
}

/* ----------------------------------------------
   SERVICES SECTION
   ---------------------------------------------- */
.services-box {
    padding: 50px 60px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 35px;
}

.service-card {
    padding: 25px;
    text-align: center;
    border-radius: 12px;
    background: white;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    transition: 0.3s;
    cursor: pointer;
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 28px rgba(0,0,0,0.18);
}

.service-icon {
    font-size: 55px;
    color: var(--green-dark);
}

/* ----------------------------------------------
   TRACKING BOX
   ---------------------------------------------- */
.tracking-section {
    background: var(--gray-light);
    padding: 60px 40px;
    text-align: center;
}

.tracking-section input {
    width: 330px;
    padding: 14px;
    border-radius: 6px;
    border: 1px solid #ccc;
    margin-right: 10px;
}

.tracking-section button {
    padding: 14px 22px;
    border: none;
    background: var(--green-dark);
    color: white;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: 0.3s;
}

.tracking-section button:hover {
    background: var(--green);
}

/* ----------------------------------------------
   NETWORK
   ---------------------------------------------- */
.network img {
    width: 75%;
    margin: 30px auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* ----------------------------------------------
   GALLERY GRID
   ---------------------------------------------- */
.gallery-grid {
    padding: 50px 60px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-grid img {
    width: 100%;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
    transition: 0.3s;
}

.gallery-grid img:hover {
    transform: scale(1.05);
}

/* ----------------------------------------------
   FOOTER
   ---------------------------------------------- */
footer {
    background: var(--blue-dark);
    color: white;
    padding: 50px 60px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

footer div {
    width: 30%;
    margin-bottom: 20px;
}

footer a {
    color: #d4e8ff;
    display: block;
    margin-bottom: 8px;
    text-decoration: none;
}

footer a:hover {
    color: var(--green);
}

/* ----------------------------------------------
   RESPONSIVE ADJUSTMENTS
   ---------------------------------------------- */
@media (max-width: 900px) {
    header {
        flex-direction: column;
        padding: 15px;
    }

    nav a {
        margin: 10px;
        display: inline-block;
    }

    .slide-content h1 {
        font-size: 36px;
    }

    .slide-content p {
        font-size: 16px;
    }

    footer div {
        width: 100%;
    }
}