:root {
    primary-color: #5b3d75;
    secondary-color: #ff9900;
    background-color: #eef2f7;
    card-background: #ffffff;
    text-dark: #2c3e50;
    text-light: #7f8c8d;
    shadow-light: 0 5px 15px rgba(0, 0, 0, 0.08);
    shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.15);
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-dark);
    margin: 0;
    padding: 30px 20px;
    line-height: 1.6;
}

h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 50px;
    font-size: 3em;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    padding-bottom: 15px;
}

h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    border-radius: 2px;
}

.batch-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
    max-width: 1300px;
    margin: 0 auto;
}

.batch-card {
    background-color: var(--card-background);
    border-radius: 15px;
    padding: 30px;
    box-shadow: var(--shadow-light);
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-top: 5px solid var(--primary-color);
}

.batch-card:hover {
    transform: translateY(-8px) scale(1.01);
    box-shadow: var(--shadow-hover);
}

.batch-card h2 {
    color: var(--text-dark);
    font-size: 1.7em;
    margin-top: 0;
    margin-bottom: 5px;
    font-weight: 600;
}

.tagline {
    font-style: normal;
    color: var(--text-light);
    margin-bottom: 20px;
    font-size: 1em;
}

.price {
    margin: 20px 0;
    display: flex;
    align-items: baseline;
    gap: 15px;
    padding: 10px 0;
    border-top: 1px solid #ecf0f1;
    border-bottom: 1px solid #ecf0f1;
}

.old-price {
    text-decoration: line-through;
    color: var(--text-light);
    font-size: 1.1em;
}

.new-price {
    color: var(--primary-color);
    font-weight: 800;
    font-size: 2.2em;
    line-height: 1;
}

.features {
    list-style: none;
    padding: 0;
    margin-top: 20px;
    margin-bottom: 30px;
    flex-grow: 1;
}

.features li {
    padding: 8px 0;
    font-size: 0.95em;
    position: relative;
    padding-left: 30px;
    color: var(--text-dark);
}

.features li::before {
    content: '★';
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
    font-size: 1.1em;
}

.btn {
    display: block;
    text-align: center;
    padding: 14px 25px;
    background-color: var(--secondary-color);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 700;
    font-size: 1.1em;
    letter-spacing: 0.5px;
    transition: background-color 0.2s ease, transform 0.1s ease;
    border: none;
}

.btn:hover {
    background-color: #ffb333;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(255, 153, 0, 0.4);
}

@media (max-width: 768px) {
    .batch-list {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 25px;
    }
    h1 {
        font-size: 2.5em;
        margin-bottom: 40px;
    }
    .batch-card {
        padding: 25px;
    }
}
@media (max-width: 480px) {
    body {
        padding: 15px;
    }
    h1 {
        font-size: 2em;
        padding-bottom: 10px;
    }
    .new-price {
        font-size: 1.8em;
    }
}