body {
    font-family: system-ui, -apple-system, Segoe UI, Roboto,
        sans-serif;
    background: #f9fafb;
    margin: 0;
    padding: 0;
    color: #111827;
}
.webp h1 {
    margin-top: 0;
}
.webp.card {
    max-width: 900px;
    margin: auto;
    margin-top: 20px;
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}
.webp #dropZone {
    border: 2px dashed #94a3b8;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    color: #475569;
    transition: 0.3s all;
    cursor: pointer;
    margin-bottom: 16px;
}
.webp #dropZone.dragover {
    background: #eff6ff;
    border-color: #2563eb;
    color: #1d4ed8;
}
.webp .options {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    margin-bottom: 10px;
}
.webp label {
    font-weight: 600;
}
.webp select,
.webp input[type="number"] {
    padding: 6px 8px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
}
.webp button {
    background: #2563eb;
    color: #fff;
    border: none;
    border-radius: 6px;
    padding: 10px 18px;
    font-weight: 600;
    cursor: pointer;
}
.webp button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.webp progress {
    width: 100%;
    height: 14px;
    margin-top: 10px;
}
.webp ul {
    list-style: none;
    padding: 0;
    margin-top: 12px;
}
.webp li {
    background: #f1f5f9;
    margin-bottom: 6px;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.9rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.webp a.download {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}