:root {
    --bg: #0f172a; --card: #1e293b; --border: #334155; --text: #f8fafc; --muted: #94a3b8;
    --primary: #6366f1; --primary-hover: #4f46e5; --ok: #22c55e; --error: #ef4444;
    color-scheme: dark;
}
* { box-sizing: border-box; }
body {
    margin: 0; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 16px;
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text);
}
.card { width: 100%; max-width: 560px; background: var(--card); border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
h1 { font-size: 22px; margin: 0 0 8px; }
.muted { color: var(--muted); font-size: 13px; }
label { display: block; margin: 16px 0 6px; font-weight: 600; font-size: 14px; color: var(--muted); }
input[type=email], input[type=password], input[type=text] {
    width: 100%; padding: 12px 14px; font: inherit; font-size: 16px; color: var(--text);
    background: var(--bg); border: 1px solid var(--border); border-radius: 10px;
}
input:focus-visible, button:focus-visible, .drop:focus-within { outline: 2px solid var(--primary); outline-offset: 2px; }
button { font: inherit; cursor: pointer; }
form > button[type=submit]:not(.link) {
    width: 100%; margin-top: 24px; padding: 12px; border: 0; border-radius: 10px; background: var(--primary); color: #fff; font-weight: 600;
}
form > button[type=submit]:not(.link):hover { background: var(--primary-hover); }
.link { background: none; border: 0; padding: 0; color: var(--muted); text-decoration: underline; font-size: 13px; }
.link:hover { color: var(--text); }
.danger { color: var(--error); }
.secondary, .bottom { display: flex; gap: 20px; justify-content: space-between; margin-top: 20px; }
.notice, .error { padding: 10px 14px; border-radius: 10px; font-size: 14px; }
.notice { border: 1px solid var(--ok); color: var(--ok); }
.error { border: 1px solid var(--error); color: var(--error); }
.top { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.drop {
    display: flex; flex-direction: column; align-items: center; gap: 6px; margin: 20px 0; padding: 40px 16px; text-align: center;
    border: 2px dashed var(--border); border-radius: 12px; cursor: pointer; color: var(--text);
}
.drop.over, .drop:hover { border-color: var(--primary); }
.drop-title { font-size: 16px; font-weight: 600; }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.item { padding: 12px 0; border-top: 1px solid var(--border); }
.item-name { font-size: 13px; color: var(--muted); overflow-wrap: anywhere; }
.item progress { width: 100%; height: 6px; margin-top: 6px; accent-color: var(--primary); }
.item-status { font-size: 13px; margin-top: 4px; }
.item-status.ok { color: var(--ok); }
.item-status.error { color: var(--error); }
.url { display: flex; gap: 8px; margin-top: 6px; }
.url input { flex: 1; min-width: 0; padding: 8px 10px; font: 13px ui-monospace, monospace; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
.url button { padding: 8px 14px; border: 0; border-radius: 8px; background: var(--primary); color: #fff; }
@media (max-width: 480px) { .card { padding: 20px; } }