* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

body {
    background: #f4f6f8;
    color: #333;
}

/* ===== HEADER ===== */
header {
    background: linear-gradient(135deg, #4caf50, #2e7d32);
    color: white;
    padding: 40px 20px;
    text-align: center;
}

header h1 {
    font-size: 3.2rem;
    margin-bottom: 10px;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

/* ===== SEARCH ===== */
.search-box {
    text-align: center;
    margin-bottom: 20px;
}

.search-box input {
    width: 100%;
    max-width: 400px;
    padding: 12px 15px;
    font-size: 16px;
    border-radius: 30px;
    border: 1px solid #ccc;
}

/* ===== CATEGORY TABS ===== */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 30px;
}

.tabs button {
    padding: 10px 18px;
    border-radius: 20px;
    border: none;
    background: #e0e0e0;
    cursor: pointer;
    font-size: 14px;
}

.tabs button.active {
    background: #2e7d32;
    color: white;
}

/* ===== GRID ===== */
.supplement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

/* ===== CARD ===== */
.card {
    background: white;
    border-radius: 14px;
    overflow: hidden;
    max-width: 350px;
    box-shadow: 0 6px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 25px rgba(0,0,0,0.15);
}

/* ===== IMAGE ===== */
.card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

/* ===== CONTENT ===== */
.card-content {
    padding: 18px;
}

.card-content h3 {
    color: #2e7d32;
    margin-bottom: 8px;
}

.card-content p {
    font-size: 0.95rem;
    color: #555;
    margin-bottom: 15px;
}

/* ===== BUY BUTTON ===== */
.buy-btn {
    display: inline-block;
    width: 100%;
    padding: 10px;
    background: #4caf50;
    color: white;
    border: none;
    border-radius: 25px;
    font-size: 15px;
    cursor: pointer;
}
a{
    text-decoration: none;
    margin:auto;
    text-align: center;
}

.buy-btn:hover {
    background: #388e3c;
}

/* ===== FOOTER ===== */
footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    background: #e8f5e9;
}

@media (max-width: 600px) {
    header h1 {
        font-size: 1.7rem;
    }
}