/* SIROKURO の白黒。常に白地 */
:root {
  --bg: #ffffff;
  --text: #333333;
  --ink: #222222;
  --muted: #8a8a8a;
  --hover: #a1a1a1;
  --line: #d9d9d9;
  --soft: #f8f8f8;
  --soft2: #f1f1f1;
  --err: #a0302a;
  color-scheme: light only;
}

* { box-sizing: border-box; }
html, body { background: var(--bg); }
body {
  margin: 0;
  color: var(--text);
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  font-weight: 300;
  font-size: 15px;
  line-height: 1.8;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; }
a { color: var(--ink); text-decoration: none; border-bottom: 1px dotted currentColor; }
a:hover { color: var(--hover); }

.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }

/* ヘッダー：操作だけを小さく */
header { display: flex; justify-content: flex-end; gap: 18px; align-items: center; min-height: 48px; font-size: 12px; color: var(--muted); }
.textbtn { border: 0; background: none; padding: 0; cursor: pointer; color: var(--muted); font-size: 12px; letter-spacing: 0.06em; border-bottom: 1px dotted currentColor; }
.textbtn:hover { color: var(--hover); }
header a { color: var(--muted); }

/* タブ */
.tabs { display: flex; justify-content: center; gap: 36px; padding: 20px 0 36px; }
.tab { border: 0; background: none; padding: 4px 0; cursor: pointer; color: var(--muted); font-size: 15px; letter-spacing: 0.16em; border-bottom: 1px solid transparent; }
.tab .n { font-size: 12px; margin-left: 6px; letter-spacing: 0.04em; }
.tab.on { color: var(--ink); font-weight: 400; border-bottom-color: var(--ink); }
.tab:hover { color: var(--ink); }

/* 一覧と詳細 */
.layout { display: block; }
@media (min-width: 900px) {
  .layout { display: grid; grid-template-columns: 400px 1fr; gap: 48px; align-items: start; }
  .detail-pane { position: sticky; top: 16px; max-height: calc(100vh - 32px); overflow-y: auto; }
  .detail-pane .back { display: none; }
  .detail-pane { display: flex; flex-direction: column; }
  .detail-pane > * { order: 2; }
  .detail-pane .d-head { order: 0; padding-bottom: 16px; }
  .detail-pane .actions { order: 1; position: static; background: none; flex-direction: row; flex-wrap: wrap; align-items: center; padding: 0 0 28px; }
  .detail-pane .actions .btn { width: auto; padding: 10px 28px; font-size: 14px; }
}

.group { margin-bottom: 56px; }
.group h2 { margin: 0 0 14px; font-size: 13px; font-weight: 400; letter-spacing: 0.2em; color: var(--ink); }
.group h2 .n { color: var(--muted); font-weight: 300; margin-left: 8px; letter-spacing: 0.04em; }
.empty { color: var(--muted); font-size: 13px; padding: 8px 0; }

.card {
  display: block; width: 100%; text-align: left; cursor: pointer;
  background: var(--soft); border: 0; border-radius: 6px;
  padding: 16px 20px; margin-bottom: 10px;
  transition: background-color 0.15s;
}
.card:hover { background: var(--soft2); }
.card.on { background: var(--soft2); box-shadow: inset 2px 0 0 var(--ink); }
.card .when { font-size: 12px; color: var(--muted); letter-spacing: 0.06em; }
.card .when.alert { color: var(--ink); font-weight: 500; }
.card .who { font-size: 17px; font-weight: 400; color: var(--ink); margin: 2px 0 0; }
.card .what { font-size: 13px; color: var(--muted); margin-left: 10px; font-weight: 300; }
.card .sub { font-size: 12px; color: var(--muted); }

/* 過去：1行で詰めて表示 */
.search { width: 100%; border: 0; border-bottom: 1px solid var(--line); padding: 8px 2px; margin: 0 0 36px; font: inherit; font-size: 14px; background: transparent; color: var(--ink); outline: none; }
.search:focus { border-bottom-color: var(--ink); }
.row {
  display: grid; grid-template-columns: 52px 1fr auto; gap: 12px; align-items: baseline;
  width: 100%; text-align: left; cursor: pointer; border: 0; background: none;
  padding: 9px 8px; border-radius: 4px; font-size: 14px;
}
.row:hover, .row.on { background: var(--soft); }
.row .d { color: var(--muted); font-size: 12px; }
.row .who { color: var(--ink); font-weight: 400; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .who span { color: var(--muted); font-weight: 300; font-size: 12px; margin-left: 8px; }
.row .v { color: var(--muted); font-size: 12px; white-space: nowrap; }

/* 詳細 */
.detail-pane:empty { display: none; }
@media (max-width: 899px) {
  .detail-pane { position: fixed; inset: 0; z-index: 10; background: var(--bg); overflow-y: auto; padding: 0 16px calc(140px + env(safe-area-inset-bottom)); }
  .detail-pane:empty { display: none; }
  body.locked { overflow: hidden; }
}
.back { border: 0; background: none; cursor: pointer; color: var(--muted); font-size: 13px; padding: 14px 0; letter-spacing: 0.08em; }
.back:hover { color: var(--ink); }
.d-head { padding: 12px 0 28px; }
.d-state { font-size: 12px; color: var(--muted); letter-spacing: 0.12em; }
.d-name { font-size: 24px; font-weight: 400; color: var(--ink); margin: 4px 0 2px; letter-spacing: 0.06em; line-height: 1.5; }
.d-sub { font-size: 13px; color: var(--muted); }

.block { background: var(--soft); border-radius: 6px; padding: 24px 28px; margin-bottom: 20px; }
@media (max-width: 520px) { .block { padding: 20px 18px; } }
.block h3 { margin: 0 0 14px; font-size: 12px; font-weight: 400; letter-spacing: 0.2em; color: var(--ink); }

.kv { display: grid; grid-template-columns: 7.5em 1fr; gap: 6px 16px; font-size: 14px; }
.kv dt { color: var(--muted); font-size: 12px; padding-top: 2px; }
.kv dd { margin: 0; color: var(--ink); word-break: break-all; }

.copy { margin-bottom: 18px; }
.copy:last-child { margin-bottom: 0; }
.copy-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 4px; }
.copy-label { font-size: 12px; color: var(--muted); }
.copy-btn {
  border: 1px solid var(--line); background: var(--bg); border-radius: 999px; cursor: pointer;
  font-size: 11px; padding: 2px 12px; color: var(--text); letter-spacing: 0.1em; white-space: nowrap;
}
.copy-btn:hover { border-color: var(--hover); color: var(--hover); }
.copy-btn.done { border-color: var(--ink); color: var(--ink); }
.copy-text {
  white-space: pre-wrap; word-break: break-all; font-size: 14px; color: var(--ink); cursor: copy;
  background: var(--bg); border-radius: 4px; padding: 10px 14px; line-height: 1.85;
}
.copy-text.long { max-height: 220px; overflow: hidden; position: relative; }
.copy-text.long.open { max-height: none; }
.more { border: 0; background: none; cursor: pointer; color: var(--muted); font-size: 12px; padding: 4px 0 0; border-bottom: 1px dotted currentColor; }

/* 完了ボタン：スマホは画面下 */
.actions { display: flex; flex-direction: column; gap: 10px; padding: 28px 0 8px; }
@media (max-width: 899px) {
  .actions { position: fixed; left: 0; right: 0; bottom: 0; padding: 14px 16px calc(14px + env(safe-area-inset-bottom)); background: rgba(255,255,255,0.96); }
}
.btn {
  border: 1.5px solid var(--ink); background: var(--bg); color: var(--ink); border-radius: 999px;
  padding: 12px 22px; cursor: pointer; font-weight: 400; letter-spacing: 0.12em; font-size: 15px; width: 100%;
}
.btn:hover { border-color: var(--hover); color: var(--hover); }
.btn:disabled { opacity: 0.35; pointer-events: none; }
.undo { display: flex; justify-content: center; gap: 22px; font-size: 12px; color: var(--muted); }
.flags { display: flex; justify-content: center; gap: 18px; font-size: 12px; color: var(--muted); letter-spacing: 0.08em; }

/* ログイン・読み込み */
.center { min-height: 70vh; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 20px; color: var(--muted); font-size: 13px; }
.error { color: var(--err); font-size: 13px; text-align: center; margin: 0 0 24px; }

.toast {
  position: fixed; left: 50%; bottom: calc(110px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: var(--bg); color: var(--ink); border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 20px; font-size: 13px; letter-spacing: 0.08em; opacity: 0; pointer-events: none;
  transition: opacity 0.2s; z-index: 20; white-space: nowrap;
}
.toast.show { opacity: 1; }
@media (min-width: 900px) { .toast { bottom: 32px; } }
@media (max-width: 520px) { .row { grid-template-columns: 44px 1fr; } .row .v { display: none; } }