:root {
    --primary: #FFD700;
    --primary-hover: #FFA500;
    --text-light: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.65);
    --font-stack: 'CustomFont', Arial, sans-serif;
}
@font-face {
    font-family: 'CustomFont';
    src: url('font.ttf') format('truetype');
}
body {
    font-family: var(--font-stack);
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #111; 
}
#bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: url('bg.png');
    background-repeat: repeat;
    z-index: -1;
    will-change: background-position;
    animation: scroll-bg 100s linear infinite;
}
@keyframes scroll-bg {
    0% { 
        background-position: 0px 0px; 
    }
    100% { 
        background-position: -1000px 1000px; 
    }
}
#container {
    background-color: var(--bg-overlay);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 800px;
    width: 90%;
}
h1 {
    color: var(--text-light);
    text-align: center;
    margin-top: 0;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.controls {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 30px;
}
button {
    background-color: var(--primary);
    color: #333;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}
button:hover:not(:disabled) {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
}
button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #cccccc;
}
#mainContent {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 30px;
    width: 100%;
}
#mainContent.hidden {
    display: none;
}
label {
    color: var(--text-light);
    font-size: 18px;
    display: block;
    margin-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
    padding-bottom: 5px;
}
select {
    width: 100%;
    font-size: 16px;
    padding: 10px;
    border-radius: 6px;
    border: 1px solid #ccc;
    background-color: #fff;
    font-family: var(--font-stack);
    cursor: pointer;
    overflow-y: auto;
}
select option {
    padding: 5px;
}
.reference-section ul {
    color: var(--text-light);
    margin: 0;
    padding-left: 20px;
    max-height: 250px;
    overflow-y: auto;
    font-size: 14px;
    line-height: 1.5;
    list-style-type: square;
}
.reference-section ul::-webkit-scrollbar {
    width: 8px;
}
.reference-section ul::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}