:root {
    --bg-main: #F5F7FB;
    --bg-card: #FFFFFF;
    --primary: #3B82F6;
    --primary-hover: #2563EB;

    --text-main: #111827;
    --text-body: #374151;
    --text-muted: #6B7280;

    --border-light: #E5E7EB;
}

.tool-box {
    max-width: 1000px;
    margin: auto;
    background: var(--bg-card);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-light);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

textarea {
    width: 100%;
    min-height: 150px;
    max-height: 300px;
    margin-bottom: 10px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    padding: 12px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
    align-items: center;
}

select {
    padding: 10px;
    border-radius: 10px;
    border: 1px solid var(--border-light);
}

button {
    background: var(--primary);
    border: none;
    padding: 10px 16px;
    border-radius: 10px;
    cursor: pointer;
    color: #fff;
    margin-right: 8px;
}

button:hover {
    background: var(--primary-hover);
}

.info {
    font-size: 13px;
    color: var(--text-muted);
}

.copy-wrap {
    position: relative;
    display: inline-block;
}

#copyMsg5 {
    position: absolute;
    top: 50%;
    left: 110%;
    transform: translateY(-50%);
    background: #DCFCE7;
    color: #16A34A;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 12px;
    opacity: 0;
    transition: 0.3s;
}