:root {
  --bg: #0f1420;
  --card: #171d2b;
  --border: #2a3244;
  --text: #e7ebf3;
  --muted: #8892a6;
  --accent: #4f8cff;
  --danger: #e5484d;
  --ok: #3ecf8e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
}
header h1 { font-size: 18px; margin: 0; }
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
  margin-bottom: 20px;
}
.card h2 { margin-top: 0; font-size: 15px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
input[type=text], input[type=password], textarea {
  width: 100%;
  padding: 10px 12px;
  background: #0f1420;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 14px;
}
textarea { resize: vertical; }
.checkbox-row { display: flex; align-items: center; gap: 8px; }
.checkbox-row input { width: auto; }
hr.sep { border: none; border-top: 1px solid var(--border); margin: 20px 0 4px; }
input[type=file] {
  width: 100%;
  padding: 8px 0;
  color: var(--muted);
  font-size: 13px;
}
.image-preview { margin: 8px 0 4px; }
.image-preview img {
  max-width: 100%;
  max-height: 160px;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
  margin-bottom: 6px;
}
.link-row { display: flex; gap: 8px; }
.link-row input { width: auto; flex: 1; }
.link-row input:first-child { flex: 0 0 40%; }
.reply-thumb {
  max-width: 160px;
  max-height: 100px;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
  margin-top: 8px;
}
button {
  margin-top: 16px;
  padding: 10px 16px;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  color: white;
  font-size: 14px;
  cursor: pointer;
}
button.danger { background: var(--danger); }
button.link-btn { background: none; color: var(--muted); text-decoration: underline; padding: 0; margin: 0; }
.status { font-size: 14px; }
.status .ok { color: var(--ok); font-weight: 600; }
.status .off { color: var(--danger); font-weight: 600; }
.success { color: var(--ok); }
.error { color: var(--danger); }
.muted { color: var(--muted); }
.reply-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.reply-row:last-child { border-bottom: none; }
.reply-row.disabled { opacity: 0.45; }
.reply-main p { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.reply-actions { display: flex; gap: 8px; flex-shrink: 0; }
.reply-actions form { margin: 0; }
.reply-actions button { margin: 0; padding: 6px 10px; font-size: 12px; }
.login-body {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
  width: 320px;
}
.login-card h1 { font-size: 18px; margin: 0 0 8px; text-align: center; }