:root {
  --bg: #0f1115;
  --panel: #171a21;
  --border: #262a35;
  --text: #e6e8ee;
  --muted: #8892a6;
  --accent: #6ea8fe;
  --accent-2: #56d364;
  --warn: #f0883e;
  --danger: #f47c7c;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif; font-size: 14px; }

header {
  padding: 8px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
header h1 { font-size: 15px; margin: 0; font-weight: 600; }
.status { color: var(--muted); font-size: 12px; }
.header-right { display: flex; gap: 16px; align-items: center; }
.auth-status { display: flex; gap: 8px; align-items: center; font-size: 12px; color: var(--muted); }
.auth-status.signed-in #auth-label { color: var(--accent-2); }

main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  height: calc(100vh - 40px);
}

.pane {
  background: var(--panel);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

/* --- dashboard --- */
.tabs { display: flex; gap: 0; border-bottom: 1px solid var(--border); padding: 0 8px; }
.tab {
  background: transparent; color: var(--muted); border: none;
  padding: 8px 12px; cursor: pointer; font-size: 13px;
  border-bottom: 2px solid transparent;
}
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tab-panel { padding: 12px; overflow-y: auto; flex: 1; min-height: 0; }

table { border-collapse: collapse; width: 100%; font-size: 12px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.due-soon td { color: var(--warn); }
tr.overdue td { color: var(--muted); text-decoration: line-through; }

#calendar-list .cal-day { margin-bottom: 12px; }
#calendar-list h4 { margin: 6px 0; font-size: 13px; color: var(--muted); }
.cal-ev {
  display: flex; gap: 8px; padding: 6px 8px; border-radius: 4px;
  background: #1e222c; margin: 3px 0; font-size: 12px;
}
.cal-ev .time { color: var(--muted); font-variant-numeric: tabular-nums; min-width: 90px; }
.cal-ev.auto { border-left: 3px solid var(--accent-2); }
.cal-ev.busy { border-left: 3px solid var(--warn); }
.cal-ev.all-day { opacity: 0.5; }

/* --- chat --- */
#messages { flex: 1; overflow-y: auto; padding: 12px; display: flex; flex-direction: column; gap: 12px; }
.msg { max-width: 90%; padding: 10px 12px; border-radius: 8px; white-space: pre-wrap; word-wrap: break-word; line-height: 1.5; }
.msg.user { align-self: flex-end; background: #24344d; }
.msg.assistant { align-self: flex-start; background: #1e222c; }
.msg.error { align-self: center; background: #4a1e1e; color: var(--danger); font-size: 12px; }

.tool-card {
  align-self: stretch;
  background: #1e222c;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-size: 13px;
}
.tool-card h4 { margin: 0 0 6px 0; font-size: 13px; color: var(--accent); }
.tool-card .reason { color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.tool-card pre {
  background: #0f1115;
  padding: 8px;
  border-radius: 4px;
  font-size: 11px;
  overflow-x: auto;
  max-height: 300px;
  overflow-y: auto;
  margin: 0 0 8px 0;
}
.tool-card .diff-line-add { color: var(--accent-2); }
.tool-card .diff-line-del { color: var(--danger); }
.tool-card .actions { display: flex; gap: 8px; }
.tool-card.pending { border-color: var(--warn); }
.tool-card.applied { border-color: var(--accent-2); opacity: 0.7; }
.tool-card.rejected { border-color: var(--danger); opacity: 0.5; }

#composer { border-top: 1px solid var(--border); padding: 10px; }
#composer textarea {
  width: 100%; background: #0f1115; color: var(--text); border: 1px solid var(--border);
  border-radius: 4px; padding: 8px; font-size: 13px; font-family: inherit; resize: vertical;
}
.row { display: flex; gap: 8px; margin-top: 6px; }
button {
  background: var(--accent); color: #0f1115; border: none; padding: 6px 14px;
  border-radius: 4px; cursor: pointer; font-size: 13px; font-weight: 500;
}
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.reject { background: transparent; color: var(--danger); border: 1px solid var(--danger); }

#signin-gate {
  position: fixed;
  inset: 40px 0 0 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
}
#signin-gate .gate-card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 32px 40px;
  border-radius: 8px;
  max-width: 480px;
  text-align: center;
}
#signin-gate h2 { margin-top: 0; font-size: 18px; }
#signin-gate code {
  background: #0f1115;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 12px;
}
#signin-gate .muted { color: var(--muted); font-size: 13px; margin-bottom: 0; }

#toasts {
  position: fixed; bottom: 16px; right: 16px; display: flex; flex-direction: column; gap: 6px;
  z-index: 100;
}
.toast {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 8px 12px; border-radius: 6px; font-size: 12px; min-width: 220px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4);
}
.toast.success { border-color: var(--accent-2); }
.toast.error { border-color: var(--danger); }