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

body {
    background-color: #f5f5f7;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.product-container {
    width: 100%;
    max-width: 800px;
    background-color: #ffffff;
    border: 1px solid #ccc;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.product-header {
    background-color: #1e1e1e;
    color: #ffffff;
    text-align: center;
    padding: 15px;
    font-size: 20px;
    font-weight: bold;
}

.hero-banner {
    background-image: linear-gradient(rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3)), url('../images/phonebgrd.jpg');
    background-size: cover;
    background-position: center;
    height: 250px;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #d1d1d6;
}

.hero-text {
    font-size: 28px;
    font-weight: bold;
    color: #ebd082;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
    text-align: center;
    padding: 0 10px;
}

.specs-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    padding: 20px;
    background-color: #ffffff;
}

.spec-card {
    border: 1px solid #e5e5ea;
    padding: 15px;
    border-radius: 4px;
    background-color: #ffffff;
}

.spec-card h3 {
    font-size: 13px;
    font-weight: bold;
    color: #1d1d1f;
    margin-bottom: 10px;
    line-height: 1.4;
}

.spec-card p {
    font-size: 11px;
    color: #86868b;
    line-height: 1.4;
}

.promo-bar {
    background-color: #28a745;
    color: #ffffff;
    text-align: center;
    padding: 20px;
}

.promo-bar h2 {
    font-size: 16px;
    margin-bottom: 10px;
    font-weight: bold;
}

.buy-btn {
    background-color: #ffffff;
    color: #000000;
    border: none;
    padding: 8px 24px;
    font-size: 12px;
    font-weight: bold;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.buy-btn:hover {
    background-color: #f5f5f7;
}

.buy-btn:active {
    transform: scale(0.97);
}