:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --border: #d9dce1;
  --text: #1f2329;
  --muted: #6b7280;
  --accent: #2563eb;
  --danger: #dc2626;
  --selected: #eef4ff;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 14px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
}

/* ---------- login ---------- */
.login-page {
  display: flex;
  min-height: 100vh;
  align-items: center;
  justify-content: center;
}
.login-card {
  background: var(--panel);
  padding: 32px;
  border-radius: 12px;
  box-shadow: var(--shadow);
  width: 320px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.login-card h1 { margin: 0 0 8px; font-size: 20px; }
.login-card label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
.login-card input {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: 6px; font-size: 14px;
}
.login-card button {
  margin-top: 6px; padding: 10px; border: 0; border-radius: 6px;
  background: var(--accent); color: #fff; font-size: 15px; cursor: pointer;
}
.error { color: var(--danger); margin: 0; font-size: 13px; }

/* ---------- topbar ---------- */
.topbar {
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.brand { font-weight: 700; font-size: 15px; }
.toolbar { display: flex; align-items: center; gap: 10px; flex: 1; flex-wrap: wrap; }
.field { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.field select, .field input {
  padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 13px; color: var(--text);
}
.field input[type="number"] { width: 74px; }
.spacer { flex: 1; }
.logout { color: var(--muted); text-decoration: none; font-size: 13px; }
.logout:hover { color: var(--accent); }

.btn {
  padding: 7px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: var(--panel); color: var(--text); font-size: 13px; cursor: pointer;
}
.btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn.action { background: #f0f3f9; }
.btn.danger:hover:not(:disabled) { border-color: var(--danger); color: var(--danger); }
.btn.small { padding: 4px 8px; font-size: 12px; }
.cache-info { font-size: 12px; color: var(--muted); white-space: nowrap; }

/* ---------- progress window ---------- */
.progress-overlay {
  position: fixed; inset: 0; z-index: 60;
  background: rgba(15, 23, 42, 0.45);
  display: flex; align-items: center; justify-content: center;
}
.progress-box {
  background: var(--panel); padding: 28px 36px; border-radius: 12px;
  box-shadow: var(--shadow); text-align: center; min-width: 260px;
}
.progress-box #progress-title { font-weight: 600; margin-bottom: 6px; }
.progress-count { color: var(--muted); font-size: 14px; }
.spinner {
  width: 32px; height: 32px; margin: 0 auto 14px;
  border: 3px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- move dropdown ---------- */
.move-wrap { position: relative; }
.move-menu {
  position: absolute; right: 0; top: calc(100% + 4px); min-width: 180px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px;
  box-shadow: var(--shadow); z-index: 30; overflow: hidden;
}
.move-item {
  display: block; width: 100%; text-align: left; padding: 9px 12px;
  border: 0; background: none; font-size: 13px; cursor: pointer;
}
.move-item:hover { background: var(--selected); }

/* ---------- status bar ---------- */
.status-bar {
  padding: 8px 16px; background: #eaf1ff; color: #1e40af; font-size: 13px;
  border-bottom: 1px solid var(--border);
}
.status-bar.error { background: #fdecec; color: var(--danger); }

/* ---------- table ---------- */
.content { position: relative; padding: 0; }
.msg-table { width: 100%; border-collapse: collapse; background: var(--panel); table-layout: fixed; }
.msg-table th, .msg-table td {
  padding: 8px 12px; text-align: left; border-bottom: 1px solid var(--border);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.msg-table thead th {
  position: sticky; top: 53px; background: #fafbfc; z-index: 10;
  font-size: 12px; color: var(--muted); font-weight: 600;
}
.col-check { width: 48px; text-align: center; cursor: pointer; }
.col-check input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; vertical-align: middle; }
.col-date { width: 160px; color: var(--muted); }
.col-from { width: 22%; }
.col-rcpt { width: 22%; }
.col-subj { width: auto; }
.msg-table tbody tr { cursor: pointer; }
.msg-table tbody tr:hover { background: #f7f9fc; }
.msg-table tbody tr.selected { background: var(--selected); }
.loading, .error { color: var(--muted); text-align: center; padding: 24px; }
.msg-table td.error { color: var(--danger); }
.empty-note { text-align: center; color: var(--muted); padding: 30px; }

/* ---------- overlay ---------- */
.overlay {
  position: fixed; inset: 53px 0 0 0; z-index: 40;
  background: rgba(15, 23, 42, 0.45);
  display: flex; justify-content: center; align-items: center;
  padding: 24px;
}
.overlay-panel {
  background: var(--panel); width: 80vw; height: 80vh; max-width: 100%; max-height: 100%;
  border-radius: 12px; box-shadow: var(--shadow);
  display: flex; flex-direction: column; overflow: hidden;
}
.overlay-head {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
}
.overlay-head strong { font-size: 15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overlay-meta { padding: 12px 16px; font-size: 13px; color: var(--text); border-bottom: 1px solid var(--border); }
.overlay-meta .mk { color: var(--muted); display: inline-block; min-width: 44px; }
.overlay-attach {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  padding: 10px 16px; border-bottom: 1px solid var(--border); background: #fafbfc;
}
.attach-label { font-size: 12px; color: var(--muted); }
.attach-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 10px; border: 1px solid var(--border); border-radius: 999px;
  font-size: 12px; background: var(--panel); max-width: 320px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.attach-chip .attach-size { color: var(--muted); }
.overlay-bodybar { display: flex; gap: 8px; padding: 8px 16px 0; }
.overlay-text {
  margin: 0; padding: 16px; overflow: auto; white-space: pre-wrap; word-break: break-word;
  font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, monospace; flex: 1;
}
.overlay-html { border: 0; width: 100%; flex: 1; min-height: 300px; background: #fff; }
.hidden { display: none !important; }