*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background: #121212;
    color: #f1f1f1;
    margin: 0;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: auto;
    overflow-x: hidden;
}

/* HEADER */
.app-header {
    text-align: center;
    margin-bottom: 15px;
}

.logo-wrap {
    display: flex;
    justify-content: center;
    margin-bottom: 10px;
}

.logo-wrap img {
    width: 180px;
    max-width: 60%;
    height: auto;
}

/* TITLE */
h1 {
    margin: 0;
    font-size: 22px;
    letter-spacing: 0.5px;
}

/* CARDS */
.card {
    background: #1e1e1e;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 15px;
    border: 1px solid #2a2a2a;

    overflow: hidden; /* prevents visual spill outside card */
}

/* FORM FIELDS (SINGLE COLUMN LIKE CLIFFSIDE STYLE) */
.field {
    display: flex;
    flex-direction: column;
    margin-bottom: 12px;
}

/* LABELS */
label {
    font-size: 13px;
    margin-bottom: 6px;
    color: #bdbdbd;
}

/* INPUTS */
input {
    width: 100%;
    max-width: 100%;
    display: block;

    padding: 12px;
    border-radius: 8px;
    border: 1px solid #333;

    background: #121212;
    color: #fff;
    font-size: 15px;

    box-sizing: border-box;
}

input:focus {
    outline: none;
    border-color: #4c8dff;
}

/* BUTTON */
button {
    width: 100%;
    padding: 14px;
    background: #4c8dff;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
}

button:hover {
    background: #2f6fe0;
}

/* OUTPUT */
.result {
    white-space: pre-line;
    font-family: monospace;
}

/* MOBILE */
@media (max-width: 600px) {
    body {
        padding: 10px;
    }

    .card {
        padding: 12px;
    }

    h1 {
        font-size: 20px;
    }
}