:root {
  --bg: #f6f7f9; --fg: #1a2338; --muted: #6b7590; --line: #dfe3ea;
  --card: #fff; --accent: #3b6fd4; --ok: #17864a; --warn: #a86a00; --err: #c0392b;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.6 -apple-system, "Segoe UI", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: var(--bg); color: var(--fg); }

.topbar { display: flex; align-items: center; gap: 20px; padding: 10px 20px;
  background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.topbar h1 { font-size: 16px; margin: 0; }
.topbar nav { display: flex; gap: 4px; }
.tab { border: 0; background: transparent; padding: 7px 14px; border-radius: 6px; cursor: pointer;
  color: var(--muted); font-size: 14px; }
.tab.active { background: #eef2fb; color: var(--accent); font-weight: 600; }
.conn { margin-left: auto; display: flex; align-items: center; gap: 7px; color: var(--muted); font-size: 12px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #c8cdd8; display: inline-block; }
.dot.on { background: var(--ok); }

.view { padding: 20px; }
.hidden { display: none !important; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px;
  margin-bottom: 20px; }
.card.narrow { max-width: 460px; margin: 60px auto; }
h2 { font-size: 15px; margin: 0 0 14px; }
h3 { font-size: 13px; color: var(--muted); margin: 0 0 10px; }

label { display: block; margin-bottom: 12px; font-size: 12px; color: var(--muted); }
input, textarea, select { width: 100%; padding: 8px 10px; border: 1px solid var(--line);
  border-radius: 6px; font: inherit; background: #fff; color: var(--fg); margin-top: 4px; }
textarea { resize: vertical; font-family: inherit; line-height: 1.7; }
button { padding: 8px 14px; border: 1px solid var(--line); background: #fff; border-radius: 6px;
  cursor: pointer; font: inherit; }
button:hover { background: #f0f3f8; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover { background: #325ec0; }

.hint { font-size: 12px; color: var(--muted); margin: 4px 0; }
.hint.ok { color: var(--ok); } .hint.warn { color: var(--warn); } .hint.error, .error { color: var(--err); }
.msg { font-size: 12px; color: var(--ok); min-height: 18px; }
.msg.error { color: var(--err); }
.row { display: flex; gap: 10px; align-items: center; }
.empty { color: var(--muted); font-size: 13px; padding: 16px; text-align: center; }

/* 一覧 + エディタ */
.split { display: grid; grid-template-columns: 320px 1fr; gap: 20px; align-items: start; }
.list { background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.listHead { display: flex; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.listHead select { margin: 0; }
#postList { list-style: none; margin: 0; padding: 0; max-height: 70vh; overflow-y: auto; }
#postList li { padding: 10px 12px; border-bottom: 1px solid var(--line); cursor: pointer;
  display: grid; grid-template-columns: auto 1fr; gap: 4px 8px; }
#postList li:hover { background: #f7f9fc; }
#postList li.sel { background: #eef2fb; }
.pTitle { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pWhen { grid-column: 2; font-size: 11px; color: var(--muted); }

.editor { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; }
.editorHead { display: flex; gap: 10px; align-items: center; margin-bottom: 16px; }
.editorHead select { width: auto; margin: 0; }
.editorBody { display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 11px;
  background: #eceff5; color: var(--muted); white-space: nowrap; }
.badge.draft { background: #eceff5; color: #5a637a; }
.badge.approved { background: #e3f2e9; color: var(--ok); }
.badge.scheduled { background: #e6edfb; color: var(--accent); }
.badge.posted { background: #dff0e6; color: #0f6b3a; }
.badge.failed { background: #fbe6e3; color: var(--err); }
.tag { font-size: 11px; color: var(--muted); border: 1px solid var(--line); padding: 1px 7px; border-radius: 4px; }
.tag.on { color: var(--ok); border-color: #bfe3cd; }

.actions { display: flex; gap: 8px; margin: 14px 0 8px; flex-wrap: wrap; }
.scheduleRow { display: flex; gap: 10px; align-items: flex-end; }
.scheduleRow label { flex: 1; margin: 0; }
details.ai { border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; margin: 12px 0; }
details.ai summary { cursor: pointer; font-size: 13px; color: var(--accent); }
details.ai > * { margin-top: 8px; }

/* Instagram 風プレビュー */
.ig { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; }
.igHead { display: flex; align-items: center; gap: 8px; padding: 10px; border-bottom: 1px solid var(--line); }
.igAvatar { width: 28px; height: 28px; border-radius: 50%;
  background: linear-gradient(45deg, #f9ce34, #ee2a7b, #6228d7); }
.igName { font-weight: 600; font-size: 13px; }
.igMedia { aspect-ratio: 1; background: #f0f2f6; display: flex; align-items: center;
  justify-content: center; color: var(--muted); font-size: 12px; }
.igActions { padding: 8px 10px; font-size: 16px; color: #333; }
.igBody { padding: 0 10px 10px; font-size: 13px; white-space: pre-wrap; word-break: break-word; }
.igTime { padding: 0 10px 12px; font-size: 11px; color: var(--muted); }

/* カレンダー */
.calHead { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.calHead h2 { margin: 0; }
.calGrid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.calHeadCell { background: #f2f4f8; padding: 7px; text-align: center; font-size: 12px; color: var(--muted); }
.calCell { background: #fff; min-height: 92px; padding: 5px; }
.calCell.empty { background: #fafbfc; }
.calDay { font-size: 11px; color: var(--muted); margin-bottom: 3px; }
.calItem { font-size: 11px; padding: 2px 5px; border-radius: 4px; margin-bottom: 2px; cursor: pointer;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap; background: #eceff5; color: #5a637a; }
.calItem.approved { background: #e3f2e9; color: var(--ok); }
.calItem.scheduled { background: #e6edfb; color: var(--accent); }
.calItem.posted { background: #dff0e6; color: #0f6b3a; }
.calItem.failed { background: #fbe6e3; color: var(--err); }

table { width: 100%; border-collapse: collapse; margin-top: 14px; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); font-size: 12px; }
th { color: var(--muted); font-weight: 600; }
td.ok { color: var(--ok); } td.error { color: var(--err); }
#accountList { list-style: none; padding: 0; }
#accountList li { padding: 7px 0; border-bottom: 1px solid var(--line); display: flex; gap: 8px; align-items: center; }

@media (max-width: 900px) {
  .split, .editorBody { grid-template-columns: 1fr; }
}