/* ── Trust テイスト ── */
:root {
  --c-base: #FFFFFF;
  --c-main: #0A1628;
  --c-accent: #C0122C;
  --c-accent-soft: #FFF0F0;
  --c-sub: #4A607A;
  --c-border: #D1D9E6;
  --c-surface: #F4F6F9;
  --c-card: #FFFFFF;
  --c-text: #0A1628;
  --c-text-muted: #4A607A;
  --c-bridge-bg: #0A1628;
  --c-bridge-text: #FFFFFF;
  --font-head: 'Noto Sans JP', 'Inter', sans-serif;
  --font-body: 'Noto Sans JP', 'Inter', sans-serif;
  --shadow-soft: 0 2px 8px rgba(10,22,40,.08);
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }

html { font-size:16px; }
body {
  font-family: var(--font-body);
  background: var(--c-base);
  color: var(--c-text);
  overflow: hidden;
}
:lang(ja) { line-break: strict; }

/* ── Typography (cqw) ── */
.slide-hero   { font-size:7.2cqw; font-weight:900; line-height:1.15; letter-spacing:.02em; }
.slide-h1     { font-size:4.8cqw; font-weight:700; line-height:1.2;  letter-spacing:.02em; }
.slide-h2     { font-size:3.2cqw; font-weight:700; line-height:1.25; letter-spacing:.02em; }
.slide-h3     { font-size:2.2cqw; font-weight:600; line-height:1.3;  letter-spacing:.02em; }
.slide-title  { font-size:2cqw;   font-weight:400; line-height:1.4;  letter-spacing:.02em; }
.slide-body   { font-size:1.6cqw; font-weight:400; line-height:1.6;  letter-spacing:.02em; }
.slide-caption{ font-size:1.1cqw; font-weight:300; line-height:1.5;  letter-spacing:.05em; }
.slide-micro  { font-size:0.9cqw; font-weight:300; line-height:1.4;  letter-spacing:.05em; }
.slide-number { font-size:9.6cqw; font-weight:900; line-height:1;    letter-spacing:-.02em; }

.slide-hero, .slide-h1, .slide-h2, .slide-h3 {
  word-break: normal; overflow-wrap: normal; text-wrap: balance;
}

/* ── Slide Stage ── */
.slide-stage {
  width: 100vw; height: 100vh;
  display: grid; place-items: center;
  background: var(--c-base);
}
.slide {
  width: 100vw; height: 100vh;
  max-width: calc(100vh * 16 / 9);
  max-height: calc(100vw * 9 / 16);
  margin: auto;
  position: absolute; top:50%; left:50%;
  transform: translate(-50%,-50%);
  overflow: hidden;
  opacity: 0; pointer-events: none;
  transition: opacity .4s ease;
  container-type: inline-size;
  background: var(--c-base);
}
.slide.active {
  opacity: 1; pointer-events: auto; z-index: 10;
}

/* ── Top bar ── */
.topbar {
  position: fixed; top:0; left:0; right:0; height:48px;
  background: rgba(255,255,255,.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--c-border);
  display: flex; align-items: center; padding: 0 16px;
  z-index: 100; font-size:13px; color: var(--c-text-muted);
}
.topbar-title { font-weight:700; color: var(--c-main); margin-right:auto; }
.topbar-nav { display:flex; gap:4px; align-items:center; }
.topbar-nav button {
  background: var(--c-surface); border:1px solid var(--c-border);
  padding:4px 12px; cursor:pointer; font-size:12px; color: var(--c-text);
  transition: all .15s;
}
.topbar-nav button:hover { background: var(--c-accent); color:#fff; border-color:var(--c-accent); }
.slide-counter { margin: 0 8px; font-variant-numeric: tabular-nums; }

/* ── Progress bar ── */
.progress-bar {
  position: fixed; bottom:0; left:0; height:3px;
  background: var(--c-accent); z-index:100;
  transition: width .3s ease;
}

/* ── Sidebar ── */
.sidebar-toggle {
  background:none; border:none; font-size:20px; cursor:pointer;
  color: var(--c-text-muted); margin-right:12px; padding:4px;
}
.sidebar-toggle:hover { color: var(--c-accent); }
.sidebar-backdrop {
  position:fixed; inset:0; background:rgba(10,22,40,.3);
  z-index:150; display:none;
}
.sidebar-backdrop.open { display:block; }
.sidebar {
  position:fixed; top:0; left:0; bottom:0; width:280px;
  background:#fff; border-right:1px solid var(--c-border);
  z-index:160; transform:translateX(-100%);
  transition: transform .25s ease;
  overflow-y:auto; padding:60px 0 20px;
}
.sidebar.open { transform:translateX(0); }
.sidebar-item {
  display:flex; align-items:center; gap:8px;
  padding:10px 20px; cursor:pointer; font-size:13px;
  color: var(--c-text-muted); transition: all .12s;
  border-left:3px solid transparent;
}
.sidebar-item:hover { background:var(--c-surface); color:var(--c-main); }
.sidebar-item.active { color:var(--c-accent); font-weight:700; border-left-color:var(--c-accent); background:var(--c-accent-soft); }
.sidebar-item .num { font-weight:700; font-variant-numeric:tabular-nums; min-width:20px; }

/* ===== Memo feature ===== */
.memo-list-btn{
  margin-left:12px;background:var(--c-accent-soft);color:var(--c-accent);
  border:1px solid #ffd6cc;padding:6px 12px;border-radius:18px;cursor:pointer;
  font-size:12px;font-weight:700;display:flex;align-items:center;gap:6px;transition:all .15s;
}
.memo-list-btn:hover{background:var(--c-accent);color:#fff}
.memo-list-btn span{
  background:var(--c-accent);color:#fff;border-radius:10px;
  min-width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;
  font-size:11px;padding:0 5px;
}
.memo-list-btn:hover span{background:#fff;color:var(--c-accent)}
.memo-btn{
  position:fixed;top:80px;right:20px;width:48px;height:48px;border-radius:50%;
  background:var(--c-card);border:none;cursor:pointer;font-size:20px;
  box-shadow:var(--shadow-soft);z-index:54;display:flex;align-items:center;justify-content:center;
  transition:transform .15s,background .15s;
}
.memo-btn:hover{background:var(--c-accent-soft);transform:scale(1.05)}
.memo-dot{
  position:absolute;top:8px;right:8px;width:10px;height:10px;border-radius:50%;
  background:var(--c-accent);display:none;border:2px solid #fff;
}
.memo-btn.has-note .memo-dot{display:block}
.modal{
  position:fixed;inset:0;background:rgba(10,22,40,.5);
  display:none;align-items:center;justify-content:center;z-index:200;padding:20px;
}
.modal.open{display:flex}
.modal-card{
  background:#fff;border-radius:16px;padding:24px;width:520px;max-width:100%;
  box-shadow:0 20px 60px rgba(0,0,0,.2);display:flex;flex-direction:column;gap:16px;
}
.modal-card-lg{width:680px;max-height:80vh}
.modal-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}
.modal-head strong{font-size:16px;color:var(--c-main)}
.modal-sub{font-size:12px;color:var(--c-text-muted);margin-top:4px}
.modal-close{
  background:none;border:none;font-size:24px;cursor:pointer;color:var(--c-text-muted);
  padding:0 8px;line-height:1;
}
.modal-close:hover{color:var(--c-accent)}
#memo-textarea{
  width:100%;min-height:160px;padding:12px;border:1px solid var(--c-border);
  border-radius:8px;font-family:inherit;font-size:14px;line-height:1.6;resize:vertical;
  color:var(--c-text);background:#fff8f0;
}
#memo-textarea:focus{outline:none;border-color:var(--c-accent)}
.modal-actions{display:flex;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.btn-primary{
  background:var(--c-accent);color:#fff;border:none;padding:10px 20px;
  border-radius:8px;font-size:14px;font-weight:700;cursor:pointer;transition:background .15s;
}
.btn-primary:hover{background:#9E0E24}
.btn-ghost{
  background:none;color:var(--c-text-muted);border:1px solid var(--c-border);
  padding:10px 16px;border-radius:8px;font-size:13px;cursor:pointer;transition:all .15s;
}
.btn-ghost:hover{background:var(--c-accent-soft);color:var(--c-accent);border-color:var(--c-accent)}
.memo-list{
  flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:12px;
  max-height:50vh;padding-right:4px;
}
.memo-list-empty{text-align:center;color:var(--c-text-muted);padding:32px;font-size:13px}
.memo-item{background:#fff8f0;border:1px solid var(--c-border);border-radius:8px;padding:12px 16px;}
.memo-item-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.memo-item-title{font-size:13px;font-weight:700;color:var(--c-accent);cursor:pointer}
.memo-item-title:hover{text-decoration:underline}
.memo-item-text{font-size:13px;color:var(--c-text);line-height:1.7;white-space:pre-wrap}
.memo-item-del{background:none;border:none;color:var(--c-text-muted);cursor:pointer;font-size:14px;padding:2px 6px}
.memo-item-del:hover{color:var(--c-accent)}