* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, sans-serif;
    background: #0b0d12;
    color: #ffffff;
}

.app {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
    padding: 30px 16px;
    text-align: center;
}

h1 {
    margin: 10px 0 30px;
    font-size: 32px;
    letter-spacing: 4px;
}

.case {
    padding: 30px 20px;
    border-radius: 20px;
    background: #151922;
    border: 1px solid #252b38;
}

.case-image {
    font-size: 80px;
    margin-bottom: 15px;
}

.case h2 {
    margin: 10px 0;
}

.case p {
    color: #8f98a8;
}

button {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    border: none;
    border-radius: 12px;
    background: #5865f2;
    color: white;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
}

button:active {
    transform: scale(0.98);
}

.result {
    margin-top: 20px;
    min-height: 50px;
    padding: 15px;
    border-radius: 12px;
    background: #151922;
}