* { box-sizing: border-box; }
:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #dde1e7;
  --text: #1c2430;
  --muted: #68727f;
  --accent: #2563eb;
  --danger: #dc2626;
  --crit-bg: #fef2f2;
  --crit-border: #fca5a5;
  --ok: #16a34a;
}
body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: #eef1f5; padding: 1px 5px; border-radius: 4px; }

.topnav {
  display: flex; align-items: center; gap: 14px;
  background: #111827; color: #e5e7eb;
  padding: 10px 20px;
}
.topnav a { color: #e5e7eb; }
.topnav .brand { font-weight: 700; font-size: 17px; margin-right: 10px; }
.topnav .spacer { flex: 1; }

.container { max-width: 1200px; margin: 20px auto; padding: 0 16px; }

.flash {
  background: #eff6ff; border: 1px solid #bfdbfe;
  padding: 10px 14px; border-radius: 8px; margin-bottom: 16px;
}
.flash.error { background: var(--crit-bg); border-color: var(--crit-border); }

.btn {
  display: inline-block; border: 1px solid var(--border); background: var(--panel);
  color: var(--text); padding: 7px 14px; border-radius: 8px;
  cursor: pointer; font-size: 14px; text-decoration: none;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.danger { color: var(--danger); border-color: #fecaca; }
.btn.ghost { background: transparent; }
.btn.sm { padding: 3px 8px; font-size: 12.5px; }
.btn.wide { width: 100%; }
.topnav .btn { background: transparent; color: #e5e7eb; border-color: #374151; }
.topnav .btn:hover { border-color: #9ca3af; }
form.inline { display: inline; }

.login-box {
  max-width: 360px; margin: 12vh auto; background: var(--panel);
  border: 1px solid var(--border); border-radius: 12px; padding: 30px; text-align: center;
}
.login-box input {
  width: 100%; padding: 10px; margin: 14px 0;
  border: 1px solid var(--border); border-radius: 8px; font-size: 15px;
}

.critical-zone {
  background: var(--crit-bg); border: 2px solid var(--crit-border);
  border-radius: 10px; padding: 14px 18px; margin-bottom: 20px;
}
.critical-zone h2 { margin: 0 0 10px; color: #991b1b; font-size: 17px; }
.crit-item {
  display: flex; gap: 10px; flex-wrap: wrap; padding: 6px 0;
  border-bottom: 1px dashed var(--crit-border); color: var(--text);
}
.crit-item:last-child { border-bottom: none; }
.crit-item .acc { font-weight: 600; }
.crit-item .from { color: var(--muted); }
.crit-item .reason { color: #991b1b; font-size: 13px; }

.filters {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px 14px; margin-bottom: 16px;
}
.filters select, .filters input[type="search"], .filters input[type="text"] {
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.filters label { color: var(--muted); font-size: 14px; }

.mail-list {
  width: 100%; border-collapse: collapse; background: var(--panel);
  border: 1px solid var(--border); border-radius: 10px; overflow: hidden;
}
.mail-list th, .mail-list td { padding: 9px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.mail-list th { background: #f1f3f6; font-size: 13px; color: var(--muted); }
.mail-list tr.unread td { font-weight: 600; background: #fbfcfe; }
.mail-list tr.critical td { background: var(--crit-bg); }
.mail-list tr.disabled-row td { opacity: 0.5; }
.mail-list .empty { text-align: center; color: var(--muted); padding: 30px; font-weight: normal; }
.from-cell { max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nowrap { white-space: nowrap; }
.right { text-align: right; }
.clip { margin-left: 4px; }
.badge {
  display: inline-block; font-size: 11.5px; font-weight: 600; padding: 1px 8px;
  border-radius: 10px; background: #e5e7eb; color: #374151; margin-left: 6px;
}
.badge.ok { background: #dcfce7; color: var(--ok); }
.badge.err { background: #fee2e2; color: var(--danger); }

.pager { display: flex; gap: 14px; align-items: center; justify-content: center; margin: 18px 0; color: var(--muted); }

.page-head { display: flex; align-items: center; justify-content: space-between; }
.row-actions { white-space: nowrap; }
.row-actions form { margin-right: 2px; }
.error-list li { margin: 6px 0; color: var(--danger); }

.msg-head { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 18px; margin-bottom: 14px; }
.msg-head.critical { border-color: var(--crit-border); }
.crit-banner {
  background: var(--crit-bg); border: 1px solid var(--crit-border); color: #991b1b;
  padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; font-weight: 600;
}
.msg-head h1 { margin: 0 0 10px; font-size: 20px; }
.meta { color: var(--muted); font-size: 14px; line-height: 1.6; margin-bottom: 14px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.attachments { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 10px 16px; margin-bottom: 14px; }
.attachments a { margin-right: 14px; }

.html-controls { margin-bottom: 8px; }
.mailframe {
  width: 100%; min-height: 65vh; background: #fff;
  border: 1px solid var(--border); border-radius: 10px;
}
.mail-text {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 18px; white-space: pre-wrap; word-wrap: break-word; font-family: inherit; font-size: 15px;
}

.compose-form { max-width: 760px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 20px; }
.compose-form label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 14px; }
.compose-form input, .compose-form select, .compose-form textarea {
  width: 100%; padding: 8px 10px; margin-top: 4px;
  border: 1px solid var(--border); border-radius: 8px; font-size: 15px; font-family: inherit;
}
.form-row { display: grid; grid-template-columns: 3fr 1fr; gap: 12px; }

.rules-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 16px; }
.hint { color: var(--muted); }

@media (max-width: 800px) {
  .rules-cols { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .topnav { flex-wrap: wrap; }
}