:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --border: #e2e5ea;
  --text: #1c2330;
  --muted: #67707f;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --ok: #16a34a;
  --warn: #d97706;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b;
    --panel: #1b2029;
    --border: #2b323e;
    --text: #e6e9ee;
    --muted: #939aa8;
    --accent: #3b82f6;
    --accent-hover: #60a5fa;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}
a { color: var(--accent); }

header.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.topbar h1 { font-size: 17px; margin: 0; }
.topbar nav { display: flex; gap: 4px; flex-wrap: wrap; }
.topbar nav button {
  background: none;
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--muted);
  font-size: 14px;
}
.topbar nav button.active { background: var(--bg); color: var(--text); font-weight: 600; }
.topbar .spacer { flex: 1; }

main { max-width: 1080px; margin: 0 auto; padding: 20px; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 18px;
}
.card h2 { margin: 0 0 12px; font-size: 16px; }
.card p.hint { color: var(--muted); font-size: 13px; margin: 6px 0 12px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; }
.stat {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.stat .num { font-size: 26px; font-weight: 700; }
.stat .label { color: var(--muted); font-size: 13px; }

label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
input, textarea, select {
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button.btn {
  padding: 9px 16px;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
}
button.btn:hover { background: var(--accent-hover); }
button.btn.secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
button.btn.danger { background: var(--danger); }
button.mini {
  padding: 4px 9px;
  font-size: 12.5px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text);
  border-radius: 6px;
  cursor: pointer;
  margin: 0 2px;
}
button.mini:hover { border-color: var(--accent); color: var(--accent); }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
td.body-cell { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.badge.pending    { background: #fef3c7; color: #92400e; }
.badge.processing { background: #dbeafe; color: #1e40af; }
.badge.sent       { background: #dcfce7; color: #166534; }
.badge.delivered  { background: #bbf7d0; color: #14532d; }
.badge.failed     { background: #fee2e2; color: #991b1b; }
.badge.canceled   { background: #e5e7eb; color: #374151; }
@media (prefers-color-scheme: dark) {
  .badge.pending    { background: #45340a; color: #fcd34d; }
  .badge.processing { background: #172a54; color: #93c5fd; }
  .badge.sent       { background: #103a22; color: #86efac; }
  .badge.delivered  { background: #0c4a26; color: #86efac; }
  .badge.failed     { background: #4c1414; color: #fca5a5; }
  .badge.canceled   { background: #2b323e; color: #cbd5e1; }
}

.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
.row > * { flex: 1; min-width: 160px; }
.row > .fit { flex: 0 0 auto; min-width: 0; }

.device-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; }
.device-dot.on  { background: var(--ok); }
.device-dot.off { background: var(--danger); }

.toast {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--text);
  color: var(--bg);
  padding: 11px 18px;
  border-radius: 8px;
  font-size: 14px;
  opacity: 0;
  transition: opacity .25s;
  pointer-events: none;
  max-width: 380px;
  z-index: 50;
}
.toast.show { opacity: 1; }
.toast.error { background: var(--danger); color: #fff; }

code.block {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 12.5px;
  overflow-x: auto;
  white-space: pre;
  margin: 8px 0;
}
.key-reveal {
  background: var(--bg);
  border: 1px dashed var(--accent);
  border-radius: 8px;
  padding: 10px 12px;
  font-family: ui-monospace, monospace;
  font-size: 13px;
  word-break: break-all;
  margin-top: 10px;
}
.pager { display: flex; gap: 8px; align-items: center; margin-top: 12px; color: var(--muted); font-size: 13px; }

/* login */
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 20px; }
.login-card { width: 100%; max-width: 360px; }
.login-card h1 { font-size: 20px; margin: 0 0 4px; }
.login-card p { color: var(--muted); font-size: 13.5px; margin-top: 0; }