/* ===== Global Layout ===== */

body {
    background-color: #111;
    color: #eee;
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
}

/* Left-aligned container */
.container {
    max-width: 360px;
    margin: 0 auto;
    padding: 0 16px;
    text-align: left;
}

/* ===== Calculator Card ===== */

.input-section {
    background: #1a1a1a;
    padding: 20px;
    border-radius: 10px;
    margin-top: 20px;
    box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

/* ===== Labels & Inputs ===== */

label {
    display: block;
    margin-top: 12px;
    font-size: 0.9rem;
}

input[type="number"] {
    width: 200px;
    max-width: 100%;
    margin: 6px 0 10px 0; /* tightened spacing */
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #444;
    background: #222;
    color: #eee;
    font-size: 1rem;
}

/* ===== Button ===== */

button {
    width: 200px;
    max-width: 100%;
    padding: 12px;
    margin: 6px 0 0 0; /* sits directly under the last input */
    background: #4a90e2;
    border: none;
    border-radius: 6px;
    color: white;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
}

button:active {
    background: #357ab8;
}

/* ===== Result ===== */

#result {
    margin-top: 20px;
    font-size: 1.2rem;
    padding: 10px 0;
    text-align: left;
}