body {
    font-family: Arial, sans-serif;
}

.tool-box {
    max-width: 420px;
    margin: 30px auto;
    padding: 20px;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.tool-box h2 {
    text-align: center;
    margin-bottom: 15px;
}

input, textarea {
    width: 100%;
    padding: 12px;
    font-size: 18px;
    border-radius: 8px;
    border: 1px solid #ccc;
    margin-bottom: 10px;
}

/* Calculator Grid */
.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.calc-grid button {
    padding: 15px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    background: #f1f1f1;
    cursor: pointer;
    transition: 0.2s;
}

.calc-grid button:hover {
    background: #0073e6;
    color: #fff;
}

.calc-grid .full {
    grid-column: span 4;
    background: #ff4d4d;
    color: white;
}

/* Word Counter */
textarea {
    min-height: 120px;
}

/* Mobile */
@media (max-width: 480px) {
    .tool-box {
        margin: 15px;
        padding: 15px;
    }

    .calc-grid button {
        padding: 12px;
        font-size: 16px;
    }
}