* { box-sizing: border-box; }

body {
    background: linear-gradient(135deg, #dbeafe, #93c5fd);
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    padding: 10px;
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

h2 { margin: 10px; text-align: center; color: #1e3a8a; }

.container {
    background-color: #ffffffcc;
    padding: 20px;
    width: 350px;
    max-width: 100%;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.result_container {
    display: flex;
    justify-content: space-between; 
    align-items: center;
    position: relative;
    width: 100%;
    height: 50px;
    padding: 0 10px;
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.05);
    margin-bottom: 15px;
    background-color: rgba(255,255,255,0.8);
}

.result {
    flex-grow: 1;          
    overflow-x: auto;      
    white-space: nowrap;   
    padding-right: 10px;   
}


.btn {
    border: none;
    background-color: #60a5fa;
    color: white;
    font-size: 16px;
    padding: 8px 12px;
    cursor: pointer;
    transition: background 0.3s ease, transform 0.1s ease;
    border-radius: 6px;
    position: relative;
}

.btn:hover { background-color: #3b82f6; transform: translateY(-2px); }
.btn-large { width: 100%; display: block; margin-top: 15px; }

.settings { display: flex; flex-direction: column; }

.setting {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 10px 0;
}

.btn .tooltiptext {
    visibility: hidden;
    width: 130px;
    background-color: #1e3a8a;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    top: -35px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 1;
}

.btn:hover .tooltiptext { visibility: visible; opacity: 1; }