/* =====================================================================
   共通部品 — 切り角・傾き帯・オフセット影・ドット模様(ガイド第8〜9節)
   ===================================================================== */

/* ---- 切り角ユーティリティ ---- */
.cut-tl { clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut)); }
.cut-tr { clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%); }
.cut-br { clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%); }
.cut-2  { clip-path: polygon(var(--cut) 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%, 0 var(--cut)); }

/* ================= ヘッダー ================= */
.app-header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px var(--sp-4);
  background: var(--blue);
  color: var(--on-blue);
  border-bottom: 3px solid var(--navy);
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand-logo { height: 26px; width: auto; }
.brand small {
  font-family: var(--font-display);
  font-weight: 600; font-style: italic;
  font-size: 0.66rem; letter-spacing: 0.16em;
  color: var(--yellow);
}
.header-pt {
  font-family: var(--font-display);
  font-weight: 700; font-style: italic;
  font-size: var(--text-md);
  background: var(--yellow);
  color: var(--on-yellow);
  padding: 3px 14px;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  letter-spacing: 0.04em;
}

/* ================= ボトムナビ ================= */
.bottom-nav {
  position: fixed; bottom: 0; left: 50%; transform: translateX(-50%);
  width: 100%; max-width: var(--app-max);
  height: var(--nav-h);
  display: flex;
  background: var(--navy);
  border-top: 3px solid var(--yellow);
  z-index: 50;
}
.bottom-nav button {
  flex: 1;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px;
  color: #AAB6C6;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: color var(--dur-fast);
  position: relative;
}
.bottom-nav button svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; transition: transform var(--dur-fast) var(--ease-out); }
.bottom-nav button.active { color: var(--yellow); }
.bottom-nav button.active svg { transform: translateY(-2px) scale(1.08); }
.bottom-nav button.active::before {
  content: '';
  position: absolute; top: -3px; left: 18%; right: 18%;
  height: 4px; background: var(--yellow);
  clip-path: polygon(0 0, 100% 0, calc(100% - 4px) 100%, 4px 100%);
}

/* ================= 汎用 ================= */
.section { margin: var(--sp-5) 0; }

/* 傾いた見出し帯(ガイド第9.1 / 参考06・10のタブ帯) */
.section-title {
  display: inline-block;
  font-weight: 900;
  font-size: var(--text-sm);
  letter-spacing: 0.06em;
  color: var(--on-blue);
  padding: 4px 18px 4px 12px;
  margin: 0 0 var(--sp-3);
  position: relative;
  z-index: 0;
}
.section-title::before {
  content: '';
  position: absolute; inset: 0;
  background: var(--navy);
  transform: skewX(-8deg);
  z-index: -1;
}
.section-title::after {
  content: '';
  position: absolute; right: -8px; top: 0; bottom: 0;
  width: 6px; background: var(--yellow);
  transform: skewX(-8deg);
  z-index: -1;
}
.section-title.st-blue::before { background: var(--blue); }
.section-title.st-orange::before { background: var(--orange); }
.section-title.st-magenta::before { background: var(--magenta); }

.card {
  background: var(--paper);
  border: 2px solid var(--navy);
  padding: var(--sp-4);
  box-shadow: var(--shadow-offset);
  clip-path: none;
  position: relative;
}
.card.card-cut { clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut)); box-shadow: none; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 900;
  font-size: var(--text-md);
  letter-spacing: 0.04em;
  padding: 13px 22px;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  transition: transform var(--dur-fast) var(--ease-out), filter var(--dur-fast);
  width: 100%;
  position: relative;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--yellow); color: var(--on-yellow); }
.btn-primary:hover { filter: brightness(1.05); }
.btn-fire { background: var(--orange); color: #fff; }
.btn-fire:hover { filter: brightness(1.06); }
.btn-blue { background: var(--blue); color: #fff; }
.btn-navy { background: var(--navy); color: #fff; }
.btn-ghost {
  background: var(--paper);
  color: var(--navy);
  box-shadow: inset 0 0 0 2px var(--navy);
  clip-path: none;
}
.btn-ghost:hover { background: var(--blue-soft); }
.btn[disabled] { opacity: 0.4; cursor: not-allowed; filter: grayscale(0.6); }

/* ボタンの「面の傾き+短いずれ影」を親で作る */
.btn-wrap { position: relative; display: block; }
.btn-wrap::after {
  content: ''; position: absolute; inset: 0; transform: translate(4px, 4px);
  background: var(--navy); z-index: -1;
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.chip {
  display: inline-flex; align-items: center; gap: 4px;
  font-size: var(--text-xs);
  font-weight: 900;
  letter-spacing: 0.04em;
  padding: 2px 10px;
  background: var(--blue-soft);
  color: var(--blue-deep);
  clip-path: polygon(5px 0, 100% 0, calc(100% - 5px) 100%, 0 100%);
  vertical-align: middle;
}
.chip-gold, .chip-royal { background: var(--magenta); color: #fff; }
.chip-orange, .chip-crew { background: var(--orange); color: #fff; }
.chip-yellow { background: var(--yellow); color: var(--on-yellow); }
.chip-lock { background: #E4E6EA; color: var(--text-dim); }
.chip-new { background: var(--lime); color: var(--navy-deep); }

.field { margin-bottom: var(--sp-4); }
.field label {
  display: block;
  font-size: var(--text-sm);
  color: var(--text);
  margin-bottom: 6px;
  font-weight: 900;
}
.hint { font-size: var(--text-xs); color: var(--text-dim); margin-top: 4px; }

/* ================= トースト ================= */
#toast-root {
  position: fixed; bottom: calc(var(--nav-h) + 14px); left: 50%;
  transform: translateX(-50%);
  z-index: 90;
  width: min(92vw, 420px);
  display: flex; flex-direction: column; gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--navy);
  color: #fff;
  border-left: 6px solid var(--blue);
  padding: 12px 16px;
  font-size: var(--text-sm);
  font-weight: 700;
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
  animation: toast-in var(--dur) var(--ease-out);
}
.toast.err { border-left-color: var(--red); }
.toast.pt { border-left-color: var(--yellow); background: var(--blue); }
@keyframes toast-in {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ================= モーダル ================= */
.modal-back {
  position: fixed; inset: 0; z-index: 80;
  background: rgba(22, 32, 45, 0.6);
  display: flex; align-items: center; justify-content: center;
  padding: var(--sp-4);
  animation: fade-in var(--dur-fast);
}
.modal {
  width: min(100%, 420px);
  background: var(--paper);
  border: 2px solid var(--navy);
  box-shadow: 6px 6px 0 var(--navy);
  padding: var(--sp-5);
  animation: toast-in var(--dur) var(--ease-out);
  max-height: 84dvh; overflow-y: auto;
  clip-path: polygon(var(--cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--cut));
}
.modal h3 { font-size: var(--text-lg); margin-bottom: var(--sp-2); }
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }

/* ================= デモパネル ================= */
.demo-fab {
  position: fixed;
  bottom: calc(var(--nav-h) + 16px);
  right: calc(50% - min(50%, var(--app-max) / 2) + 12px);
  z-index: 60;
  width: 46px; height: 46px;
  background: var(--paper);
  border: 2px solid var(--navy);
  box-shadow: var(--shadow-offset-sm);
  color: var(--navy);
  font-size: 1.1rem;
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
}
.demo-panel .phase-row { display: flex; gap: 8px; margin: var(--sp-3) 0 var(--sp-4); }
.demo-panel .phase-row button {
  flex: 1;
  padding: 12px 4px;
  border: 2px solid var(--line);
  font-weight: 700;
  color: var(--text-dim);
  font-size: var(--text-xs);
  line-height: 1.4;
  background: var(--rest);
}
.demo-panel .phase-row button strong {
  display: block; font-family: var(--font-display); font-style: italic; font-weight: 700;
  font-size: 1rem; color: var(--navy);
}
.demo-panel .phase-row button.on {
  border-color: var(--navy);
  background: var(--yellow);
  color: var(--navy-deep);
}
.demo-panel .btn { margin-top: 8px; }