:root { --bg: #0b0c10; --panel: #16181d; --ink: #e6e9ef; --muted: #98a2b3; --accent: #7c3aed; }
* { box-sizing: border-box; }
html, body { height: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.4 system-ui, -apple-system, Segoe UI, Roboto, Arial; }
.container { max-width: 920px; margin: 40px auto; padding: 20px; background: var(--panel); border-radius: 16px; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
h1 { margin-top: 0; font-weight: 700; font-size: 28px; }
.drop-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
.dropzone { border: 2px dashed #2b2f36; border-radius: 14px; padding: 18px; text-align: center; cursor: pointer; background: #111318; }
.dropzone.drag { border-color: var(--accent); background: #0f1020; }
.dropzone strong { display: block; font-size: 16px; margin-bottom: 6px; }
.dropzone p { margin: 0 0 8px; color: var(--muted); }
.file-info { font-size: 12px; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 16px 0; }
label { display: flex; align-items: center; justify-content: space-between; gap: 8px; background: #111318; padding: 8px 10px; border-radius: 10px; }
input, select { background: #0b0d12; color: var(--ink); border: 1px solid #23262d; padding: 6px 8px; border-radius: 8px; width: 110px; }
button { background: var(--accent); color: white; border: none; padding: 10px 14px; border-radius: 10px; font-weight: 600; cursor: pointer; }
button[disabled] { opacity: 0.5; cursor: not-allowed; }
.status { margin-top: 16px; padding: 10px 12px; background: #0b0d12; border: 1px solid #23262d; border-radius: 10px; white-space: pre-wrap; }
.hidden { display: none; }
#downloadLink { display: inline-block; margin-top: 12px; color: white; text-decoration: none; padding: 10px 12px; border: 1px solid #2b2f36; border-radius: 10px; }