body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 2em;
    background: #181824;
    color: #f9f9fa;
}
h1 {
    text-align: center;
    color: #ffda47;
}
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1em;
    justify-content: center;
    background: #21213b;
    padding: 1em;
    border-radius: 12px;
    margin-bottom: 1em;
}
label {
    display: flex;
    flex-direction: column;
    font-weight: bold;
    color: #ffd76b;
}
input[type="range"] {
    accent-color: #ffda47;
}
input[type="number"], select {
    background: #21213b;
    color: #f9f9fa;
    border: 1px solid #ffda47;
    border-radius: 4px;
    padding: 0.3em;
}
button {
    background: #ffda47;
    color: #181824;
    border: none;
    padding: 0.6em 1.2em;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    font-weight: bold;
}

/* Progress */
.progress {
    margin: 1em auto;
    text-align: center;
    color: #ffda47;
    font-size: 1.2em;
}

/* Video output */
.output {
    display: flex;
    flex-direction: column;
    align-items: center;
}
#outputVideo {
    max-width: 80vw;
    max-height: 50vh;
    margin-top: 1em;
    border: 2px solid #ffda47;
    border-radius: 8px;
    background: #000;
}
#downloadLink {
    margin-top: 1em;
    font-size: 1.1em;
    background: #ffda47;
    color: #181824;
    padding: 0.5em 1em;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
}