:root {
  --bg: #f6f7f9; --card: #ffffff; --text: #1a1d23; --muted: #6b7280; --line: #e5e7eb;
  --accent: #2563eb; --accent-2: #1d4ed8; --ok: #15803d; --err: #b91c1c; --ok-bg: #ecfdf5; --err-bg: #fef2f2;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1115; --card: #171a21; --text: #e6e8ee; --muted: #9aa3b2; --line: #2a2f3a;
    --accent: #3b82f6; --accent-2: #60a5fa; --ok-bg: #0f2a1c; --err-bg: #2a1214; --ok: #4ade80; --err: #f87171; }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
main { max-width: 640px; margin: 8vh auto; padding: 0 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 28px; box-shadow: 0 1px 2px rgba(0,0,0,.04); }
h1 { font-size: 22px; margin: 0 0 4px; }
.sub { color: var(--muted); margin: 0 0 22px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
input[type=password] { width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); color: var(--text); font-size: 15px; }
input[type=password]:focus { outline: 2px solid var(--accent); border-color: transparent; }
button { cursor: pointer; border: 0; border-radius: 9px; padding: 11px 18px; font-size: 15px; font-weight: 600; background: var(--accent); color: #fff; }
button:hover { background: var(--accent-2); }
button:disabled { opacity: .5; cursor: default; }
button.ghost { background: transparent; color: var(--muted); padding: 6px 10px; font-weight: 500; }
button.ghost:hover { color: var(--text); }
.row { display: flex; gap: 12px; align-items: center; margin-top: 16px; }
.topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.drop { border: 2px dashed var(--line); border-radius: 12px; padding: 40px 20px; text-align: center; color: var(--muted); transition: border-color .15s, background .15s; }
.drop.over { border-color: var(--accent); background: rgba(37,99,235,.06); color: var(--text); }
.drop strong { color: var(--text); }
.drop input { display: none; }
.msg { margin-top: 14px; padding: 10px 12px; border-radius: 9px; font-size: 14px; display: none; white-space: pre-wrap; }
.msg.ok { display: block; background: var(--ok-bg); color: var(--ok); }
.msg.err { display: block; background: var(--err-bg); color: var(--err); }
.list { margin: 14px 0 0; padding: 0; list-style: none; }
.list li { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-top: 1px solid var(--line); font-size: 14px; }
.list li span.meta { color: var(--muted); white-space: nowrap; }
.note { color: var(--muted); font-size: 13px; margin-top: 20px; }
.note code { font-size: 12px; }