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

body {
    background-color: #0d0d0d;
    color: #222;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

header {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 255, 242, 0.9), rgba(0, 255, 85, 0.9));
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    border-bottom: 3px solid cyan;
}

h1 {
    font-family: "Archivo Black", sans-serif;
    font-weight: 400;
    font-style: normal;
    color: #0d0d0d;
    font-size: 2.5rem;
    letter-spacing: 1px;
    margin-bottom: 8px;
    text-shadow: 1px 1px 4px rgba(255,255,255,0.3);
}

header sub {
    font-size: 0.9rem;
    color: #111;
    opacity: 0.8;
    margin: 2px 0;
}

header a {
    margin-top: 8px;
    text-decoration: none;
    color: #fff;
    background: rgba(0,0,0,0.25);
    padding: 6px 14px;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: bold;
}
header a:hover {
    color: cyan;
    background: rgba(0,0,0,0.5);
    transform: scale(1.05);
}

main {
    flex: 1;
    border-radius: 10px;
    margin: 20px auto;
    padding: 20px;
    max-width: 700px;
    width: 95%;
    background-color: #fff;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    overflow-wrap: break-word;
}

main h2 {
    font-family: 'Franklin Gothic Medium', 'Arial Narrow', Arial, sans-serif;
    font-size: 1.6rem;
    margin-bottom: 12px;
    color: #111;
    text-align: center;
}

main p {
    text-align: center;
    margin-top: 15px;
    font-size: 1rem;
}

form {
    text-align: center;
    padding: 15px;
}

label {
    font-weight: bold;
    color: #222;
}

input[type="number"] {
    margin-left: 10px;
    padding: 6px;
    border-radius: 6px;
    border: 1px solid #aaa;
    outline: none;
    transition: border 0.3s ease;
}
input[type="number"]:focus {
    border: 1px solid cyan;
    box-shadow: 0 0 5px rgba(0,255,255,0.6);
}

input[type="radio"] {
    margin: 0 6px;
    accent-color: cyan;
    cursor: pointer;
}

.sub-button {
    background: linear-gradient(135deg, cyan, #00ff85);
    border: none;
    padding: 12px 24px;
    margin-top: 15px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
    cursor: pointer;
    font-size: 1rem;
    font-weight: bold;
    transition: all 0.3s ease;
}
.sub-button:hover {
    transform: scale(1.08);
    box-shadow: 0 6px 16px rgba(0,0,0,0.35);
}

#copyBtn {
    margin-top: 10px;
    background: linear-gradient(135deg, #b6ff00, #00ff73);
    border: none;
    padding: 8px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
}
#copyBtn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0,0,0,0.25);
}

ol {
    padding: 30px;
    list-style: decimal inside;
    font-size: 1rem;
}
ol li {
    margin: 12px 0;
    line-height: 1.5;
}

#generated {
    text-align: center;
    word-break: break-all;
    overflow-wrap: anywhere;
    margin-top: 15px;
    padding: 10px;
    background: #f5f5f5;
    border-radius: 8px;
    border: 1px solid #ccc;
    max-width: 100%;
    font-family: monospace;
    font-size: 1rem;
    white-space: pre-wrap;
}


@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }

    main {
        padding: 18px;
    }

    .sub-button, #copyBtn {
        width: 100%;
        padding: 12px;
    }
}