/*designing......  man designing is tough */
:root {
    --bg:#050505;
    --text:#fff;
    --card:#1a1a1a;
    --input:#262626;
    --border: #333;
    --input-bdr: #444;
    --muted:#a3a3a3; 
    --accent:#EC3750;
}
*{
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body{
    font-family: 'Poppins', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;/*2 vs 1.8, who wins? */
}
.container{
    max-width: 600px;
    width: 100%;
    background: var(--card);
    padding: 2rem;/*2 won, sorry 1.8 */
    border-radius: 1rem;
    border: 1px solid var(--border);
}
.header{
    text-align: center;
    margin-bottom: 20px;
}
.header h1{
    font-size: 2.2rem;
    margin-bottom: 5px;
}
.header p{
    font-size:1rem;
}
.input-zone{
    padding: 15px;
    border-radius: 0.5rem;
    border: 1px solid var(--input);
    margin-bottom: 1.5rem;
    background: #1f1f1f;
}
.input-line{
    display: flex;
    gap: 15px;
    align-items: flex-end;
}
.input-line label{
    color: var(--muted);
    margin-bottom: 3px;
    display: block;
    font-size: 0.8rem; /* 0.8 vs 0.75 lol*/
}
.input-field, select{
    width: 100%;
    background: var(--input);
    color: var(--text);
    font-family: monospace;
    font-size: 1rem;
    padding: 10px 15px;
    border: 1px solid var(--input-bdr);
    border-radius: 4px;/* 4 vs 5, i love 4 more */
}
.output-grid{
    display: grid;
    gap: 10px;
}
.card{
    background: var(--input);
    border: 1px solid var(--input-bdr);
    border-radius: 6px;
    padding: 12px;
}
.card h4{
    color: var(--muted);
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 5px;
}
.card .number{
    font-family: monospace;
    font-size: 1rem;
    word-break: break-all;
}
.error-msg{
    color: var(--accent);
    height: 18px;
    margin-top: 5px;
    font-size: 0.8rem;/*0.8 won lol */
}

.footer {
    display: flex;
    align-items: center;
    justify-content: center;
}

footer {
    text-align: center;
    border-top: 1px solid #171717;
    bottom: 0;
    left: 49%;
    position: fixed;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 50px;
}
.back{
    align-items: left;
}
a{
    text-decoration: none;
    color: var(--text);
    position: fixed;
    left:35%;
    top:22%;
}