body {
    margin: 0;
    font-family: Arial, sans-serif;
    color: #333;
}

.container {
    width: 90%;
    margin: auto;
}

/* HEADER */
.header {
    background: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    width: 50px;
    border-radius: 50%;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

nav a {
    margin: 0 10px;
    text-decoration: none;
    color: #333;
}

nav a:hover {
    color: #0f766e;
}

.btn-primary {
    background: #0f766e;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
}

/* HERO */
.hero {
    text-align: center;
    padding: 120px 20px;
    color: white;
    background: linear-gradient(rgba(0,0,0,.6), rgba(0,0,0,.6)),
        url('images/header_image.jpg') center/cover;
}

/* SECTIONS */
.section {
    padding: 60px 20px;
    text-align: center;
}

.gray-bg {
    background: #f3f4f6;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px,1fr));
    gap: 20px;
    margin-top: 40px;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.1);
}

/* SLIDER */
.slider {
    overflow: hidden;
    margin-top: 40px;
}

.slides {
    display: flex;
    animation: slide 15s infinite;
}

.slide {
    min-width: 100%;
    height: 400px;
    background-size: cover;
    background-position: center;
    position: relative;
    color: white;
}

.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.6);
}

.slide .content {
    position: relative;
    top: 40%;
}

@keyframes slide {
    0% {transform: translateX(0%);}
    33% {transform: translateX(-100%);}
    66% {transform: translateX(-200%);}
    100% {transform: translateX(0%);}
}

/* FOOTER */
footer {
    background: #064e3b;
    color: white;
    padding: 40px 20px;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.download-buttons {
    margin-top: 20px;
}

.store-btn {
    display: inline-block;
    margin: 10px;
    padding: 10px 20px;
    background: #333;
    color: white;
    border-radius: 6px;
    text-decoration: none;
}