body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    background: #ffffff;
    padding: 30px;
    width: 380px;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

h2 {
    text-align: center;
    margin-bottom: 20px;
}

.input-box {
    position: relative;
    display: flex;
}

input {
    flex: 1;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 14px;
}

button {
    margin-left: 5px;
    padding: 10px;
    border: none;
    background: #667eea;
    color: white;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background: #5a67d8;
}

.strength-meter {
    height: 10px;
    background: #eee;
    border-radius: 5px;
    margin-top: 15px;
    overflow: hidden;
}

#strength-bar {
    height: 10px;
    width: 0%;
    transition: width 0.4s ease-in-out;
}

#strength-text {
    margin-top: 8px;
    font-weight: bold;
}

#crack-time {
    font-size: 13px;
    margin-top: 5px;
    color: #444;
}

ul {
    font-size: 13px;
    margin-top: 10px;
    padding-left: 18px;
}