:root {
  --fg: #111;
  --muted: #667085;
  --bg: #f7f7f5;
  --card: #fff;
  --border: #e5e7eb;
  --accent: #2563eb;
  --danger: #b91c1c;
  --warn-bg: #fff7ed;
  --warn-border: #fed7aa;
  --warn-fg: #9a3412;
  --err-bg: #fef2f2;
  --err-border: #fecaca;
  --err-fg: #991b1b;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  background: var(--card);
  position: sticky;
  top: 0;
  z-index: 10;
}
.topbar h1 { margin: 0; font-size: 20px; }

.actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

button {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 14px;
  min-height: 40px;
  cursor: pointer;
  touch-action: manipulation;
}
button:hover { border-color: var(--accent); color: var(--accent); }
button.linkish { border: none; background: transparent; color: var(--muted); padding: 8px 6px; }
button.linkish:hover { color: var(--accent); }

.status { color: var(--muted); font-size: 13px; }

main { max-width: 860px; margin: 0 auto; padding: 20px 18px 48px; }

.banner {
  max-width: 860px;
  margin: 12px auto 0;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
}
.banner.warn { background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn-fg); }
.banner.error { background: var(--err-bg); border: 1px solid var(--err-border); color: var(--err-fg); }
.banner a { color: inherit; font-weight: 600; }

section { margin-bottom: 32px; }
section h2 { font-size: 13px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 10px; }

.items { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
}
.item .row1 { display: flex; justify-content: space-between; gap: 12px; align-items: baseline; flex-wrap: wrap; }
.item .subject { font-weight: 600; }
.item .sender { color: var(--muted); font-size: 13px; }
.item .snippet { color: var(--muted); margin-top: 4px; font-size: 13px; }
.item .reason { color: var(--muted); font-size: 12px; margin-top: 6px; font-style: italic; }
.item .actions-row { margin-top: 10px; display: flex; gap: 6px; flex-wrap: wrap; }
.item .actions-row button { font-size: 13px; padding: 8px 12px; }
.item.focus-on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.item a.source { color: inherit; text-decoration: none; }
.item a.source:hover { color: var(--accent); }

.empty { color: var(--muted); font-size: 13px; margin: 0; }
.items:empty + .empty { display: block; }
.items:not(:empty) + .empty { display: none; }

section[data-group="noise"] .items { display: none; }
section[data-group="noise"]:not(.collapsed) .items { display: grid; }
section[data-group="noise"] .toggle { background: none; border: 0; padding: 0; cursor: pointer; font: inherit; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; min-height: auto; }
section[data-group="noise"] .caret { display: inline-block; transition: transform 0.15s; }
section[data-group="noise"]:not(.collapsed) .caret { transform: rotate(90deg); }

/* --- Sign-in page --- */
.signin-page { display: flex; min-height: 100vh; align-items: center; justify-content: center; padding: 24px; }
.signin-card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 28px; max-width: 360px; width: 100%; text-align: center; }
.signin-card h1 { margin: 0 0 8px; font-size: 20px; }
.signin-card .muted { color: var(--muted); margin: 0 0 20px; font-size: 14px; }
.signin-card button { width: 100%; font-weight: 600; }
.signin-card .error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 12px 0 0; }

/* --- Mobile tweaks --- */
@media (max-width: 560px) {
  .topbar { padding: 10px 14px; }
  .topbar h1 { font-size: 18px; }
  main { padding: 16px 14px 40px; }
  .item .actions-row button { flex: 1 1 calc(50% - 3px); min-width: 0; }
}