:root {
  --bg: #f4f6f9;
  --panel: #ffffff;
  --panel-2: #fafbfc;
  --border: #dde3ea;
  --text: #16202c;
  --muted: #6a7686;
  --accent: #2563eb;
  --accent-soft: #e8f0fe;
  --ok: #15803d;
  --ok-soft: #e7f6ec;
  --warn: #b45309;
  --warn-soft: #fdf3e3;
  --danger: #c0392b;
  --danger-soft: #fdecea;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 4px 12px rgba(16,24,40,.05);
  --sidebar-w: 208px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1319; --panel: #171d25; --panel-2: #1c232c; --border: #2b333e;
    --text: #e6ebf2; --muted: #94a0b0; --accent: #5b8dfa; --accent-soft: #1d2a44;
    --ok: #4ade80; --ok-soft: #14301f; --warn: #fbbf24; --warn-soft: #33280f;
    --danger: #f87171; --danger-soft: #3a1c1c;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 12px rgba(0,0,0,.25);
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.55;
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}
h1,h2,h3,h4 { margin: 0 0 10px; line-height: 1.35; }
h2 { font-size: 19px; } h3 { font-size: 15px; } h4 { font-size: 13px; color: var(--muted); }
p { margin: 0 0 8px; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: 13px; }
.tiny { font-size: 12px; }
.flex-spacer { flex: 1; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

/* ---------- フォーム ---------- */
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 10px; }
input, select, textarea {
  font: inherit; width: 100%; padding: 8px 10px; margin-top: 3px;
  border: 1px solid var(--border); border-radius: 7px;
  background: var(--panel); color: var(--text); transition: border-color .12s, box-shadow .12s;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { min-height: 110px; resize: vertical; font-family: inherit; line-height: 1.6; }
input[type=checkbox] { width: auto; margin: 0; vertical-align: middle; }
.check { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--text); margin-bottom: 10px; }
fieldset { border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin: 0 0 12px; }
legend { font-size: 12px; color: var(--muted); padding: 0 6px; }

.btn {
  font: inherit; font-size: 13px; padding: 7px 13px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel); color: var(--text);
  transition: background .12s, border-color .12s; white-space: nowrap;
}
.btn:hover:not(:disabled) { background: var(--panel-2); border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); background: var(--accent); }
.btn.danger { color: var(--danger); border-color: var(--danger); }
.btn.danger:hover:not(:disabled) { background: var(--danger-soft); }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.ghost:hover:not(:disabled) { background: var(--panel-2); }
.btn.sm { padding: 4px 9px; font-size: 12px; }
.btn.block { width: 100%; justify-content: center; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.icon-btn { border: none; background: none; font-size: 18px; cursor: pointer; color: var(--text); padding: 4px 8px; }

/* ---------- ログイン ---------- */
.auth-screen { display: grid; place-items: center; min-height: 100vh; padding: 20px; }
.auth-card {
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 30px; width: min(410px, 100%); box-shadow: var(--shadow);
}
.brand { margin-bottom: 22px; }
.brand-mark { font-weight: 700; font-size: 22px; letter-spacing: .06em; }
.brand-mark.small { font-size: 15px; }
.brand-sub { display: block; color: var(--muted); font-size: 12px; margin-top: 2px; }
.setup-block { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 12px; }
.setup-block summary { cursor: pointer; color: var(--muted); font-size: 12px; margin-bottom: 10px; }

/* ---------- レイアウト ---------- */
.topbar {
  display: flex; align-items: center; gap: 10px; padding: 9px 14px; background: var(--panel);
  border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 30; min-height: 50px;
}
.ws-select { width: auto; max-width: 190px; margin: 0; padding: 5px 8px; font-size: 12px; }
.who { color: var(--muted); font-size: 12px; max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-toggle { display: none; }
.layout { display: flex; min-height: calc(100vh - 50px); }
.sidebar {
  width: var(--sidebar-w); flex-shrink: 0; background: var(--panel);
  border-right: 1px solid var(--border); padding: 10px 8px; display: flex; flex-direction: column; gap: 1px;
  position: sticky; top: 50px; height: calc(100vh - 50px); overflow-y: auto;
}
.sidebar a {
  display: flex; align-items: center; gap: 9px; padding: 8px 11px; border-radius: 7px;
  color: var(--muted); text-decoration: none; font-size: 13px;
}
.sidebar a:hover { background: var(--panel-2); color: var(--text); }
.sidebar a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.sidebar .ic { font-size: 14px; width: 16px; text-align: center; }
.content { flex: 1; padding: 18px; min-width: 0; max-width: 1240px; }
.page-head { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 14px; flex-wrap: wrap; }
.page-head h2 { margin: 0; }
.page-head .muted { margin: 2px 0 0; }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .sidebar {
    position: fixed; top: 50px; left: 0; z-index: 25; height: calc(100vh - 50px);
    transform: translateX(-100%); transition: transform .18s; box-shadow: var(--shadow);
  }
  .sidebar.open { transform: none; }
  .who { display: none; }
  .content { padding: 14px; }
}

/* ---------- カード ---------- */
.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 15px; margin-bottom: 14px; box-shadow: var(--shadow);
}
.card > h3:first-child { margin-top: 0; }
.card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.card-head h3 { margin: 0; }
.grid { display: grid; gap: 12px; }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.grid.cols-4 { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
.form-grid { display: grid; gap: 0 12px; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.form-grid .full { grid-column: 1 / -1; }
.row { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; }
.split { display: grid; gap: 14px; grid-template-columns: minmax(0,1.35fr) minmax(0,1fr); }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

.stat-card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px; box-shadow: var(--shadow); }
.stat-label { color: var(--muted); font-size: 11px; letter-spacing: .05em; text-transform: uppercase; }
.stat-value { font-size: 30px; font-weight: 650; line-height: 1.15; margin: 3px 0 1px; font-variant-numeric: tabular-nums; }
.stat-sub { color: var(--muted); font-size: 12px; }
.stat-card.alert .stat-value { color: var(--danger); }

/* ---------- テーブル ---------- */
.table-wrap { overflow-x: auto; margin: 0 -15px -15px; padding: 0 15px 15px; }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; white-space: nowrap; background: var(--panel-2); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--panel-2); }
td.actions { white-space: nowrap; }
td.actions .btn { margin: 1px 2px 1px 0; }
.empty { text-align: center; color: var(--muted); padding: 26px 10px; }

/* ---------- バッジ ---------- */
.pill {
  display: inline-block; padding: 2px 9px; border-radius: 99px; font-size: 11.5px;
  font-weight: 600; border: 1px solid var(--border); white-space: nowrap; background: var(--panel-2);
}
.pill.ok { color: var(--ok); border-color: var(--ok); background: var(--ok-soft); }
.pill.warn { color: var(--warn); border-color: var(--warn); background: var(--warn-soft); }
.pill.danger { color: var(--danger); border-color: var(--danger); background: var(--danger-soft); }
.pill.accent { color: var(--accent); border-color: var(--accent); background: var(--accent-soft); }

/* ---------- プレビュー ---------- */
.tweet {
  border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px;
  background: var(--panel-2); margin-bottom: 9px;
}
.tweet-head { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; }
.avatar {
  width: 32px; height: 32px; border-radius: 50%; background: var(--accent);
  color: #fff; display: grid; place-items: center; font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.tweet-body { white-space: pre-wrap; word-break: break-word; }
.tweet-media { display: flex; gap: 5px; margin-top: 9px; flex-wrap: wrap; }
.tweet-media .thumb {
  width: 76px; height: 76px; border-radius: 8px; object-fit: cover;
  border: 1px solid var(--border); background: var(--panel);
}
.thumb-ph { display: grid; place-items: center; color: var(--muted); font-size: 11px; }
.counter { font-variant-numeric: tabular-nums; font-size: 12px; color: var(--muted); }
.counter.over { color: var(--danger); font-weight: 600; }

/* ---------- 素材グリッド ---------- */
.asset-grid { display: grid; gap: 11px; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); }
.asset-tile { border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--panel); }
.asset-tile .media { height: 118px; background: var(--panel-2); display: grid; place-items: center; overflow: hidden; }
.asset-tile .media img { width: 100%; height: 100%; object-fit: cover; }
.asset-tile .meta { padding: 8px 9px; }
.asset-tile .name { font-size: 12px; word-break: break-all; margin-bottom: 5px; line-height: 1.4; }
.asset-tile .btn { font-size: 11px; padding: 3px 7px; }

/* ---------- カレンダー ---------- */
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.cal-head { background: var(--panel-2); padding: 7px 4px; text-align: center; font-size: 11px; color: var(--muted); font-weight: 600; }
.cal-cell { background: var(--panel); min-height: 92px; padding: 5px 6px; }
.cal-cell.dim { background: var(--panel-2); }
.cal-cell.today .cal-date { background: var(--accent); color: #fff; border-radius: 50%; width: 20px; height: 20px; display: grid; place-items: center; }
.cal-date { font-size: 11px; color: var(--muted); margin-bottom: 3px; font-weight: 600; }
.cal-item {
  font-size: 10.5px; padding: 2px 5px; border-radius: 4px; margin-bottom: 2px;
  background: var(--accent-soft); color: var(--accent); cursor: pointer;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.cal-item.ok { background: var(--ok-soft); color: var(--ok); }
.cal-item.warn { background: var(--warn-soft); color: var(--warn); }
.cal-item.danger { background: var(--danger-soft); color: var(--danger); }

/* ---------- モーダル ---------- */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(12,18,28,.5); z-index: 50;
  display: grid; place-items: center; padding: 18px; backdrop-filter: blur(2px);
}
.modal {
  background: var(--panel); border-radius: 13px; width: min(560px, 100%);
  max-height: 88vh; display: flex; flex-direction: column; box-shadow: 0 18px 45px rgba(0,0,0,.28);
}
.modal.wide { width: min(880px, 100%); }
.modal-head { padding: 15px 18px; border-bottom: 1px solid var(--border); display: flex; align-items: center; gap: 10px; }
.modal-head h3 { margin: 0; flex: 1; }
.modal-body { padding: 16px 18px; overflow-y: auto; }
.modal-foot { padding: 12px 18px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ---------- トースト ---------- */
.toast-root { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 90; display: grid; gap: 7px; width: min(520px, calc(100vw - 30px)); }
.toast {
  padding: 10px 15px; border-radius: 9px; background: var(--text); color: var(--bg);
  box-shadow: var(--shadow); font-size: 13px; white-space: pre-wrap; animation: slide .18s;
}
.toast.err { background: var(--danger); color: #fff; }
.toast.ok { background: var(--ok); color: #fff; }
@keyframes slide { from { opacity: 0; transform: translateY(8px); } }

.error { color: var(--danger); font-size: 13px; white-space: pre-wrap; margin: 8px 0 0; }
.notice { padding: 9px 12px; border-radius: 8px; background: var(--warn-soft); color: var(--warn); font-size: 12.5px; margin-bottom: 12px; border: 1px solid var(--warn); }
.notice.info { background: var(--accent-soft); color: var(--accent); border-color: var(--accent); }
.violation-list { margin: 8px 0 0; padding-left: 18px; }
.violation-list li { color: var(--danger); font-size: 12.5px; margin-bottom: 3px; }
.skeleton { height: 15px; border-radius: 5px; background: linear-gradient(90deg, var(--panel-2) 25%, var(--border) 50%, var(--panel-2) 75%); background-size: 200% 100%; animation: sk 1.1s infinite; margin-bottom: 8px; }
@keyframes sk { from { background-position: 200% 0; } to { background-position: -200% 0; } }
.kv { display: grid; grid-template-columns: minmax(96px, auto) 1fr; gap: 5px 12px; font-size: 13px; }
.kv dt { color: var(--muted); font-size: 12px; }
.kv dd { margin: 0; word-break: break-word; }