:root {
    --bg: #020205; /* Blue-Black background */
    --card: #08080c;
    --text: #8a8a9a;
    --accent: #1a1a2e; /* Deep blue border */
    --highlight: #ffffff;
    --neon-blue: #0044ff;
}

input[type="file"] {
    display: none !important;
}

body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Space Mono', monospace; /* Font lebih jelas */
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 450px;
    background: var(--card);
    padding: 50px 35px;
    border: 1px solid var(--accent);
    box-shadow: 0 0 50px rgba(0, 68, 255, 0.1); /* Glow biru halus */
    border-radius: 4px;
    box-sizing: border-box;
}

header h1 {
    font-family: 'Syncopate', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--highlight);
    text-align: center;
}

.divider {
    width: 40px;
    height: 2px;
    background: var(--neon-blue);
    margin: 15px auto;
}

.subtitle {
    font-size: 0.7rem;
    letter-spacing: 3px;
    opacity: 0.6;
    text-align: center;
    margin-bottom: 40px;
}

/* Square Art Box */
#drop-zone {
    width: 220px;
    height: 220px;
    background: #000;
    border: 2px dashed var(--accent);
    margin: 0 auto 35px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: 0.3s;
}

#drop-zone:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 20px rgba(0, 68, 255, 0.2);
}

.overlay-text {
    font-size: 0.75rem;
    font-weight: bold;
    letter-spacing: 1px;
    color: #333;
}

#cover-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
    filter: contrast(1.1);
}

/* Input Fields */
.input-group {
    margin-bottom: 25px;
}

.input-group label {
    display: block;
    font-size: 0.6rem;
    letter-spacing: 2px;
    margin-bottom: 8px;
    color: var(--neon-blue);
    font-weight: bold;
}

input[type="text"] {
    width: 100%;
    background: #000;
    border: 1px solid var(--accent);
    color: #fff;
    padding: 15px;
    box-sizing: border-box;
    font-family: inherit;
    font-size: 0.9rem;
    transition: 0.3s;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--neon-blue);
    background: #050510;
}

.custom-file-upload {
    display: block;
    width: 100%;
    padding: 18px;
    background: #000;
    border: 1px solid var(--neon-blue);
    color: var(--neon-blue);
    text-align: center;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: bold;
    letter-spacing: 2px;
    transition: 0.3s;
    box-sizing: border-box;
}

.custom-file-upload:hover {
    background: var(--neon-blue);
    color: #fff;
}

.hint {
    font-size: 0.6rem;
    color: #444;
    text-align: center;
    margin-top: 15px;
}

/* Tracklist */
.tracklist {
    margin-top: 40px;
    background: #050508;
    padding: 20px;
    border-left: 3px solid var(--neon-blue);
}

.tracklist h3 {
    font-size: 0.8rem;
    margin-bottom: 20px;
    color: var(--highlight);
}

ul {
    padding-left: 20px;
    font-size: 0.85rem;
}

li {
    margin-bottom: 12px;
    color: #bbb;
    border-bottom: 1px solid #111;
    padding-bottom: 5px;
}

/* Process Button */
#processBtn {
    width: 100%;
    padding: 22px;
    background: var(--highlight);
    color: #000;
    border: none;
    font-family: 'Syncopate', sans-serif;
    font-weight: bold;
    font-size: 0.8rem;
    letter-spacing: 3px;
    margin-top: 40px;
    cursor: pointer;
    transition: 0.3s;
}

#processBtn:hover:not(:disabled) {
    background: var(--neon-blue);
    color: #fff;
    transform: translateY(-2px);
}

#processBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

footer {
    text-align: center;
    font-size: 0.6rem;
    letter-spacing: 2px;
    margin-top: 50px;
    opacity: 0.3;
}