/* 図のタブ：ブラウザのようなタブ列。PCは左の一覧とキャンバスの上、スマホはヘッダーの下に置く。 */
.diagram-tabs {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: flex-end;
  height: 40px;
  padding: 0 10px;
  background: #e3e9f2;
  border-bottom: 1px solid #d3dce8;
  box-sizing: border-box;
}
body.app-page .diagram-tabs { flex: none; }
/* PCは画面の高さちょうどに収める作りなので、タブ列の分だけ一覧とキャンバスの高さを詰める */
@media (min-width: 861px) {
  body.app-page .main-grid,
  body.app-page.app-ui-refined .main-grid { flex: 1; min-height: 0; }
  body.app-page .sidebar,
  body.app-page.app-ui-refined .sidebar { max-height: calc(100vh - 40px); }
}
.diagram-tabs-list {
  display: flex;
  align-items: flex-end;
  flex: 0 1 auto;
  min-width: 0;
  height: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.diagram-tabs-list::-webkit-scrollbar { display: none; }
.diagram-tab {
  position: relative;
  display: flex;
  align-items: center;
  flex: 0 1 auto;
  width: 212px;
  min-width: 96px;
  height: 34px;
  margin-bottom: -1px;
  border: 1px solid transparent;
  border-bottom: 0;
  border-radius: 10px 10px 0 0;
  color: #475569;
  box-sizing: border-box;
}
.diagram-tab + .diagram-tab::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 9px;
  width: 1px;
  height: 16px;
  background: #c3cddb;
}
.diagram-tab.is-active::before,
.diagram-tab.is-active + .diagram-tab::before { display: none; }
.diagram-tab:not(.is-active):hover { background: rgba(255, 255, 255, 0.6); }
.diagram-tab.is-active {
  z-index: 1;
  height: 35px;
  background: #fff;
  border-color: #d3dce8;
  color: #111827;
}
.diagram-tab-main {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  height: 100%;
  padding: 0 6px 0 12px;
  border: 0;
  border-radius: inherit;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
}
.diagram-tab.is-active .diagram-tab-main { font-weight: 700; cursor: default; }
.diagram-tab-main:focus-visible { outline: 2px solid #0017c1; outline-offset: -3px; }
.diagram-tab-icon { flex: none; width: 16px; height: 16px; color: #64748b; }
.diagram-tab.is-active .diagram-tab-icon { color: #0017c1; }
.diagram-tab-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.diagram-tab-spoiler {
  flex: none;
  padding: 1px 6px;
  border-radius: 5px;
  background: #ffedd5;
  color: #9a3412;
  font-size: 10.5px;
  font-weight: 700;
  line-height: 1.5;
}
.diagram-tab-close {
  visibility: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 24px;
  height: 24px;
  margin-right: 5px;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #64748b;
  cursor: pointer;
}
.diagram-tab-close svg { width: 14px; height: 14px; }
.diagram-tab.is-active .diagram-tab-close,
.diagram-tab:hover .diagram-tab-close,
.diagram-tab-close:focus-visible { visibility: visible; }
.diagram-tab-close:hover { background: #e2e8f0; color: #111827; }
.diagram-tab-input {
  flex: 1;
  min-width: 0;
  height: 26px;
  margin: 0 6px;
  padding: 0 8px;
  border: 1.5px solid #0017c1;
  border-radius: 6px;
  background: #fff;
  color: #111827;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
}
.diagram-tabs-add {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 32px;
  height: 32px;
  margin: 0 0 3px 8px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #334155;
  cursor: pointer;
}
.diagram-tabs-add svg { width: 18px; height: 18px; }
.diagram-tabs-add:hover { background: #fff; }
.diagram-tabs-add[aria-expanded="true"] { background: #fff; box-shadow: 0 0 0 3px #c7d2fe; }
.diagram-tabs-crown,
.diagram-tabs-crown-sm,
.diagram-tabs-crown-md,
.diagram-tabs-crown-lg {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  border: 2px solid #fff;
  border-radius: 50%;
  background: linear-gradient(135deg, #ffe27a, #ff9f1c);
  box-shadow: 0 2px 6px rgba(122, 74, 0, 0.3);
  box-sizing: border-box;
}
.diagram-tabs-crown { position: absolute; top: -4px; right: -6px; width: 17px; height: 17px; }
.diagram-tabs-crown[hidden] { display: none; }
.diagram-tabs-crown svg { width: 10px; height: 10px; }
.diagram-tabs-crown-sm { width: 15px; height: 15px; border-width: 1.5px; }
.diagram-tabs-crown-sm svg { width: 8px; height: 8px; }
.diagram-tabs-crown-md { width: 20px; height: 20px; }
.diagram-tabs-crown-md svg { width: 11px; height: 11px; }
.diagram-tabs-crown-lg { width: 40px; height: 40px; box-shadow: 0 3px 10px rgba(122, 74, 0, 0.3); }
.diagram-tabs-crown-lg svg { width: 21px; height: 21px; }
.diagram-tabs-spacer { flex: 1; min-width: 8px; }
.diagram-tabs-overview-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  height: 30px;
  margin: 0 0 4px;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: #334155;
  font: inherit;
  font-size: 12.5px;
  font-weight: 700;
  white-space: nowrap;
  cursor: pointer;
}
.diagram-tabs-overview-btn svg { width: 16px; height: 16px; }
.diagram-tabs-overview-btn:hover { background: rgba(255, 255, 255, 0.7); }
.diagram-tabs-overview-btn.is-on { background: #fff; border-color: #c7d2fe; color: #0017c1; }
.diagram-tabs-count { display: none; }
.diagram-tabs-add:focus-visible,
.diagram-tabs-overview-btn:focus-visible,
.diagram-tab-close:focus-visible { outline: 2px solid #0017c1; outline-offset: 1px; }

/* 3つ目のタブの案内 */
.diagram-tabs-limit {
  position: fixed;
  z-index: 10002;
  display: flex;
  flex-direction: column;
  gap: 12px;
  width: min(344px, calc(100vw - 24px));
  padding: 20px;
  border: 1px solid #e2e7ef;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.22);
  color: #111827;
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  box-sizing: border-box;
}
.diagram-tabs-limit-arrow {
  position: absolute;
  top: -7px;
  width: 14px;
  height: 14px;
  border-left: 1px solid #e2e7ef;
  border-top: 1px solid #e2e7ef;
  background: #fff;
  transform: rotate(45deg);
}
.diagram-tabs-limit-head { display: flex; align-items: center; gap: 12px; }
.diagram-tabs-limit-title { margin: 0; color: #142845; font-size: 17px; font-weight: 800; line-height: 1.4; }
.diagram-tabs-limit-body { margin: 0; color: #475569; font-size: 13px; line-height: 1.75; }
.diagram-tabs-limit-sample {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  padding: 8px 8px 0;
  overflow: hidden;
  border-radius: 10px;
  background: #e3e9f2;
}
.diagram-tabs-limit-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
  height: 28px;
  padding: 0 10px;
  border-radius: 8px 8px 0 0;
  color: #475569;
  font-size: 11.5px;
  white-space: nowrap;
  overflow: hidden;
}
.diagram-tabs-limit-chip.is-active { background: #fff; color: #111827; font-weight: 700; }
.diagram-tabs-limit-chip.is-next {
  flex: none;
  border: 1.5px dashed #f5b400;
  border-bottom: 0;
  background: #fffbeb;
  color: #8a5300;
  font-weight: 700;
}
.diagram-tabs-limit-cta {
  height: 44px;
  margin-top: 4px;
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.28);
  color: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}
.diagram-tabs-limit-later {
  height: 40px;
  border: 0;
  background: transparent;
  color: #475569;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}
.diagram-tabs-limit-cta:focus-visible,
.diagram-tabs-limit-later:focus-visible { outline: 2px solid #0017c1; outline-offset: 2px; }

/* タブのメニュー */
.diagram-tab-menu {
  position: fixed;
  z-index: 10002;
  display: flex;
  flex-direction: column;
  min-width: 200px;
  padding: 4px 0;
  border: 1px solid #e2e7ef;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18);
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.diagram-tab-menu-item {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  min-height: 40px;
  padding: 0 14px;
  border: 0;
  background: none;
  color: #1f2937;
  font: inherit;
  font-size: 13.5px;
  text-align: left;
  cursor: pointer;
}
.diagram-tab-menu-item:hover:not(:disabled) { background: #f1f5f9; }
.diagram-tab-menu-item:focus-visible { outline: 2px solid #0017c1; outline-offset: -2px; }
.diagram-tab-menu-item:disabled { color: #a3afc2; cursor: default; }
.diagram-tab-menu-item.is-danger:not(:disabled) { color: #b91c1c; }
.diagram-tab-menu-sep { height: 1px; margin: 4px 8px; background: #e5e7eb; }

/* タブ一覧：タブ列の下を覆って、各タブの図を大きく並べる */
.diagram-tabs-overview {
  position: fixed;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px 40px 32px;
  overflow-y: auto;
  background: #f3f6fb;
  color: #111827;
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  box-sizing: border-box;
}
.diagram-tabs-overview-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.diagram-tabs-overview-title { margin: 0; color: #142845; font-size: 22px; font-weight: 800; }
.diagram-tabs-overview-sub { margin: 4px 0 0; color: #53627a; font-size: 13px; }
.diagram-tabs-overview-actions { display: flex; align-items: center; gap: 12px; }
.diagram-tabs-overview-esc { color: #64748b; font-size: 12px; }
.diagram-tabs-overview-back {
  height: 40px;
  padding: 0 16px;
  border: 1px solid #e2e7ef;
  border-radius: 8px;
  background: #fff;
  color: #111827;
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}
.diagram-tabs-overview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.diagram-tabs-overview-grid.is-many { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.diagram-tabs-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid #e2e7ef;
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}
.diagram-tabs-card.is-active { border: 2px solid #0017c1; box-shadow: 0 10px 28px rgba(0, 23, 193, 0.12); }
.diagram-tabs-card-open {
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
}
.diagram-tabs-card-open:focus-visible { outline: 3px solid #0017c1; outline-offset: -3px; }
.diagram-tabs-card-thumb {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  max-height: 46vh;
  overflow: hidden;
  border-bottom: 1px solid #eef1f6;
  background: #fff;
}
.diagram-tabs-card-canvas { display: block; width: 100%; height: 100%; }
.diagram-tabs-card-now {
  position: absolute;
  left: 14px;
  top: 14px;
  z-index: 1;
  padding: 2px 10px;
  border: 1px solid #c7d2fe;
  border-radius: 999px;
  background: #eef2ff;
  color: #0017c1;
  font-size: 11.5px;
  font-weight: 700;
}
.diagram-tabs-card-watermark {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(-20deg);
  color: rgba(15, 23, 42, 0.08);
  font-size: 22px;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
}
.diagram-tabs-card-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  font-size: 13px;
}
.diagram-tabs-card-foot { display: flex; flex-direction: column; gap: 5px; padding: 12px 10px 14px 16px; }
.diagram-tabs-card-row { display: flex; align-items: center; gap: 6px; }
.diagram-tabs-card-name { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; font-size: 15px; font-weight: 800; }
.diagram-tabs-card-name .diagram-tab-icon { width: 17px; height: 17px; }
.diagram-tabs-card.is-active .diagram-tab-icon { color: #0017c1; }
.diagram-tabs-card-label { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.diagram-tabs-card-more,
.diagram-tabs-card-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 32px;
  height: 32px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #64748b;
  cursor: pointer;
}
.diagram-tabs-card-more svg { width: 18px; height: 18px; }
.diagram-tabs-card-close svg { width: 14px; height: 14px; }
.diagram-tabs-card-more:hover,
.diagram-tabs-card-close:hover { background: #f1f5f9; color: #111827; }
.diagram-tabs-card-close { display: none; }
.diagram-tabs-card-meta { color: #64748b; font-size: 12px; }
.diagram-tabs-overview-new {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 88px;
  padding: 14px 22px;
  border: 2px dashed #c3cddb;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.65);
  color: #334155;
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.diagram-tabs-overview-new:hover { border-color: #93a4bc; background: #fff; }
.diagram-tabs-overview-new-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: #eef2ff;
  color: #0017c1;
}
.diagram-tabs-overview-new-icon svg { width: 24px; height: 24px; }
.diagram-tabs-overview-new-text { display: flex; flex-direction: column; gap: 3px; flex: 1; min-width: 0; }
.diagram-tabs-overview-new-title { color: #111827; font-size: 16px; font-weight: 800; }
.diagram-tabs-overview-new-hint { color: #64748b; font-size: 12.5px; }
.diagram-tabs-overview-premium {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex: none;
  height: 30px;
  padding: 0 12px 0 6px;
  border: 1px solid #fcd9a0;
  border-radius: 999px;
  background: #fff7e6;
  color: #8a5300;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}
.diagram-tabs-overview-back:focus-visible,
.diagram-tabs-overview-new:focus-visible,
.diagram-tabs-card-more:focus-visible,
.diagram-tabs-card-close:focus-visible { outline: 2px solid #0017c1; outline-offset: 2px; }

@media (max-width: 768px) {
  /* スマホは指で押しやすい大きさにする。タイトル欄は置かない（名前はプロジェクトメニューから変える）ので、
     タブの列は横幅いっぱいまで使い、入りきらないぶんは横にスクロールする。 */
  .diagram-tabs { height: 52px; padding: 0 10px; }
  .diagram-tab { width: auto; min-width: 118px; max-width: 200px; height: 44px; }
  .diagram-tab.is-active { height: 45px; }
  .diagram-tab + .diagram-tab::before { top: 14px; }
  .diagram-tab-icon { display: none; }
  .diagram-tab-main { padding-left: 14px; font-size: 15px; }
  .diagram-tab-close { width: 32px; height: 32px; }
  .diagram-tab:not(.is-active) .diagram-tab-close { display: none; }
  .diagram-tabs-add { align-self: center; width: 40px; height: 40px; margin-bottom: 0; }
  .diagram-tabs-add svg { width: 20px; height: 20px; }
  .diagram-tabs-overview-btn {
    align-self: center;
    margin-bottom: 0;
    justify-content: center;
    height: 36px;
    width: 40px;
    padding: 0;
    border: 2px solid #1f2937;
    border-radius: 8px;
    background: #fff;
    color: #1f2937;
  }
  .diagram-tabs-overview-btn svg,
  .diagram-tabs-overview-label { display: none; }
  .diagram-tabs-count { display: inline; font-size: 14px; font-weight: 800; }
  .diagram-tabs-overview-btn.is-on { border-color: #0017c1; background: #0017c1; color: #fff; }

  .diagram-tabs-overview { gap: 14px; padding: 16px 14px 18px; }
  .diagram-tabs-overview-head { flex-wrap: nowrap; align-items: flex-start; }
  .diagram-tabs-overview-heading { flex: 1; min-width: 0; }
  .diagram-tabs-overview-back { flex: none; }
  .diagram-tabs-overview-title { font-size: 20px; }
  .diagram-tabs-overview-sub { font-size: 12px; }
  .diagram-tabs-overview-esc { display: none; }
  .diagram-tabs-overview-grid,
  .diagram-tabs-overview-grid.is-many { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .diagram-tabs-card { border-radius: 14px; }
  .diagram-tabs-card-thumb { aspect-ratio: 1 / 1; }
  .diagram-tabs-card-now { left: 8px; top: 8px; padding: 1px 8px; font-size: 10.5px; }
  .diagram-tabs-card-foot { gap: 2px; padding: 8px 4px 10px 10px; }
  .diagram-tabs-card-name { gap: 5px; font-size: 13.5px; }
  .diagram-tabs-card-name .diagram-tab-icon,
  .diagram-tabs-card-more { display: none; }
  .diagram-tabs-card-close { display: inline-flex; }
  .diagram-tabs-card-meta { font-size: 11px; }
  .diagram-tabs-overview-new {
    justify-content: center;
    gap: 8px;
    min-height: 54px;
    margin-top: auto;
    padding: 0 16px;
    border: 0;
    border-radius: 14px;
    background: #0017c1;
    box-shadow: 0 8px 20px rgba(0, 23, 193, 0.25);
    color: #fff;
  }
  .diagram-tabs-overview-new:hover { background: #0012a0; }
  .diagram-tabs-overview-new-icon { width: auto; height: auto; background: none; color: #fff; }
  .diagram-tabs-overview-new-icon svg { width: 20px; height: 20px; }
  .diagram-tabs-overview-new-text { flex: none; }
  .diagram-tabs-overview-new-title { color: #fff; font-size: 15px; }
  .diagram-tabs-overview-new-hint { display: none; }
  .diagram-tabs-overview-premium { height: auto; padding: 0; border: 0; background: none; font-size: 0; }
}