* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.main {
    background-color: #1a1a1a;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 420px;
    border: 1px solid #2a2a2a;
}

.main h1 {
    font-size: 22px;
    color: #f0f0f0;
    margin-bottom: 24px;
    text-align: center;
}

.main-content {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 24px;
}

label {
    font-size: 14px;
    font-weight: 600;
    color: #aaa;
    margin-bottom: -6px;
}

input {
    padding: 10px 14px;
    border: 1px solid #333;
    border-radius: 8px;
    font-size: 14px;
    color: #f0f0f0;
    background-color: #242424;
    outline: none;
    transition: border-color 0.2s;
}

input::placeholder {
    color: #555;
}

input:focus {
    border-color: #666;
}

button {
    margin-top: 4px;
    padding: 11px;
    background-color: #2a2a2a;
    color: #f0f0f0;
    border: 1px solid #3a3a3a;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, transform 0.1s;
}

button:hover {
    background-color: #3a3a3a;
    border-color: #555;
}

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

.result {
    background-color: #242424;
    border: 1px solid #2a2a2a;
    border-radius: 8px;
    padding: 16px;
}

.result h3 {
    font-size: 14px;
    color: #aaa;
    margin-bottom: 8px;
}

.result p {
    font-size: 14px;
    color: #ddd;
    line-height: 2;
}