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

body {
    background: linear-gradient(135deg, #eef2f7, #e3e9f2);
    display: flex;
    justify-content: center;
    padding: 40px 20px;
}

/* CONTAINER */
.wrapper {
    width: 100%;
    max-width: 1200px;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    position: relative;
}

/* CLOSE BUTTON */
.close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10;
}

.close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}

/* HEADER */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 30px;
    font-weight: 700;
}

.header p {
    color: #555;
    margin-top: 6px;
}

/* GRID */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

/* CARD BASE */
.card {
    border-radius: 16px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 320px;
    transition: all 0.35s ease;
    position: relative;
    overflow: hidden;
}

/* HOVER EFFECT */
.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

/* DARK CARD */
.card.dark {
    background: linear-gradient(135deg, #0d47a1, #1976d2);
    color: white;
}

/* LIGHT CARD */
.card.light {
    background: rgba(255,255,255,0.9);
}

/* PRICE TAG */
.price {
    display: inline-block;
    background: white;
    color: black;
    padding: 6px 12px;
    border-radius: 12px;
    font-weight: 700;
    margin-bottom: 15px;
    font-size: 14px;
}

/* FEATURES */
.features h4 {
    margin-bottom: 10px;
    font-size: 15px;
}

.features ul {
    list-style: none;
}

.features li {
    font-size: 14px;
    margin-bottom: 8px;
    padding-left: 18px;
    position: relative;
}

.features li::before {
    content: "✔";
    position: absolute;
    left: 0;
    font-size: 12px;
}

/* BUTTON */
.btn {
    margin-top: 18px;
    padding: 11px;
    border-radius: 12px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

/* BUTTON STYLES */
.card.dark .btn {
    background: white;
    color: #0d47a1;
}

.card.light .btn {
    background: #1976d2;
    color: white;
}

/* BUTTON HOVER */
.btn:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

/* NOTES */
.notes {
    margin-top: 30px;
    background: linear-gradient(135deg, #0d47a1, #1976d2);
    color: white;
    padding: 20px;
    border-radius: 16px;
    box-shadow: inset 0 0 20px rgba(255,255,255,0.1);
}

.notes h3 {
    margin-bottom: 10px;
}

.notes li {
    margin-bottom: 6px;
}

/* FOOTER */
.footer {
    margin-top: 20px;
    text-align: center;
    font-size: 14px;
}

.footer button {
    margin-left: 10px;
    padding: 8px 14px;
    border-radius: 12px;
    border: none;
    background: #1976d2;
    color: white;
    cursor: pointer;
    transition: 0.3s;
}

.footer button:hover {
    transform: scale(1.05);
}

/* MOBILE */
@media (max-width: 600px) {
    .header h1 {
        font-size: 24px;
    }
}