body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #c42ddf, #fe8bb4);
    color: white;
}

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

.back-btn, .logout-btn {
    background: white;
    padding: 8px 15px;
    border-radius: 20px;
    border: none;
}

.profile {
    display: flex;
    align-items: center;
    gap: 8px;
}

.profile-icon {
    background: #d05dec;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
}

.title {
    text-align: center;
    font-size: 32px;
    margin-top: 10px;
}
.subtitle {
    text-align: center;
    margin-top: -10px;
}

.filter-container {
    margin: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-btn {
    background: rgba(255,255,255,0.3);
    border: none;
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    color: white;
    font-weight: bold;
}

.filter-btn.active {
    background: white;
    color: #000000;
}
le {
    width: 95%;
    margin: auto;
    border-collapse: collapse;
    background: rgba(255,255,255,0.15);
    border-radius: 10px;
    overflow: hidden;
}

th, td {
    padding: 12px;
    text-align: center;
}

thead {
    background: rgba(255,255,255,0.2);
}

.tag {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 13px;
    color: black;
}
.hard    { background: #ff6b6b; }
.medium  { background: #ffe86a; }
.easy    { background: #7ddf8c; }

.cards {
    display: flex;
    justify-content: space-around;
    margin: 40px 20px;
}

.card {
    width: 28%;
    padding: 20px;
    background: rgba(255,255,255,0.25);
    text-align: center;
    border-radius: 15px;
}

.card h2 {
    color: rgb(255, 0, 0);
}