:root {
  --bg: #f4f5f7; --card: #fff; --text: #1d2330; --muted: #667085;
  --accent: #2f5bea; --accent-h: #2449c4; --border: #d0d5dd;
  --err: #b42318; --err-bg: #fef3f2; --warn: #93370d; --warn-bg: #fffaeb;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151c; --card: #1b2029; --text: #e6e8ec; --muted: #98a2b3;
    --accent: #5b7ff2; --accent-h: #7895f5; --border: #344054;
    --err: #fda29b; --err-bg: #3a1714; --warn: #fec84b; --warn-bg: #352a10;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; background: var(--bg); color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: flex; flex-direction: column; align-items: center; padding: 40px 16px;
}
.card {
  width: 100%; max-width: 640px; background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 28px;
}
h1 { margin: 0 0 8px; font-size: 1.5rem; }
.muted { color: var(--muted); }
.small { font-size: .875rem; margin-top: 24px; }
textarea, input[type=text], select {
  width: 100%; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
}
textarea { resize: vertical; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: .95rem; }
select { width: auto; margin-left: 6px; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 14px 0; }
.row input[type=text] { flex: 1; min-width: 0; }
.row label { flex: 1; }
button {
  font: inherit; font-weight: 600; border: 0; border-radius: 8px; padding: 10px 18px;
  background: var(--accent); color: #fff; cursor: pointer;
}
button:hover { background: var(--accent-h); }
button:disabled { opacity: .6; cursor: wait; }
button.secondary { background: transparent; color: var(--accent); border: 1px solid var(--border); }
.g-recaptcha { margin: 16px 0; }
.error { color: var(--err); background: var(--err-bg); padding: 10px 12px; border-radius: 8px; }
.warn { color: var(--warn); background: var(--warn-bg); padding: 10px 12px; border-radius: 8px; font-size: .9rem; }
a { color: var(--accent); }
input[type=password] {
  flex: 1; min-width: 0; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px;
}
.card { position: relative; }
.logout { position: absolute; top: 20px; right: 24px; margin: 0; }
button.link { background: none; color: var(--muted); padding: 4px 0; font-weight: 400; font-size: .875rem; }
button.link:hover { background: none; color: var(--accent); text-decoration: underline; }
.logo { width: 100%; max-width: 640px; text-align: center; margin-bottom: 24px; }
.logo img { max-width: 240px; max-height: 80px; width: auto; height: auto; }