* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: #121212;
    color: #e0e0e0;
    display: flex;
    justify-content: center;
    padding: 40px 20px;
    min-height: 100vh;
}

.container {
    background-color: #1e1e1e;
    padding: 30px;
    border-radius: 12px;
    width: 100%;
    max-width: 800px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

h1 {
    text-align: center;
    color: #4caf50;
    margin-bottom: 25px;
}

.input-group {
    margin-bottom: 20px;
    width: 100%;
}

.row {
    display: flex;
    gap: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #b3b3b3;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #333;
    border-radius: 6px;
    background-color: #2c2c2c;
    color: #fff;
    font-size: 16px;
    transition: 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: #4caf50;
}

button {
    width: 100%;
    padding: 15px;
    background-color: #4caf50;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.3s;
}

button:hover {
    background-color: #45a049;
}

.result-box {
    margin-top: 30px;
    padding: 20px;
    background-color: #232323;
    border-left: 4px solid #4caf50;
    border-radius: 6px;
}

.hidden {
    display: none;
}

h2 {
    color: #fff;
    margin-bottom: 15px;
}

.steps {
    font-family: 'Courier New', Courier, monospace;
    background-color: #1a1a1a;
    padding: 15px;
    border-radius: 6px;
    overflow-x: auto;
    line-height: 1.6;
}

.step-title {
    color: #64b5f6;
    font-weight: bold;
    margin-top: 15px;
}