:root {
  --bg: #0b1020;
  --bg-soft: #131a30;
  --surface: #182038;
  --border: #2a3554;
  --text: #e8edf7;
  --text-muted: #9aa6c4;
  --accent: #7500c0; /* emphasis FILL (with white text) */
  --accent-text: #b57cff; /* lighter purple for accent-colored TEXT on dark bg (readability) */
  --accent-2: #e02fd0;
  --ok: #10b981;
  --danger: #ef4444;
  --radius: 14px;
  --font: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Meiryo", system-ui, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background:
    radial-gradient(1200px 800px at 80% -10%, #1d2748 0%, transparent 60%),
    radial-gradient(900px 700px at -10% 110%, #2a1840 0%, transparent 55%),
    var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: var(--accent-text); }
/* the hidden attribute must win over display-setting classes (e.g. .row) */
[hidden] { display: none !important; }

.app {
  max-width: 720px;
  margin: 0 auto;
  /* top clearance for the fixed header nav (grows with the notch safe-area) */
  padding: calc(3.4rem + env(safe-area-inset-top, 0px)) 1rem 4rem;
}

/* header nav: 🏠 ホーム | 🌌 スクリーン (top-left, tap-friendly, safe-area aware) */
.appnav {
  position: fixed;
  top: calc(0.5rem + env(safe-area-inset-top, 0px));
  left: calc(0.5rem + env(safe-area-inset-left, 0px));
  z-index: 45; /* below modals/sheets(80), toast/status(50-60); above canvas/log */
  display: flex;
  gap: 0.2rem;
  padding: 0.2rem;
  background: rgba(8, 12, 28, 0.85);
  backdrop-filter: blur(6px);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  transition: opacity 0.35s ease;
}
.appnav.faded {
  opacity: 0;
  pointer-events: none;
}
.appnav a {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  min-height: 40px;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  white-space: nowrap;
}
.appnav a.active {
  background: var(--accent);
  color: #fff;
  /* the current page's tab glows (gentle pulse) so the lit side is obvious */
  animation: navglow 2.2s ease-in-out infinite;
}
@keyframes navglow {
  0%,
  100% {
    box-shadow: 0 0 6px 1px color-mix(in srgb, var(--accent) 55%, transparent);
  }
  50% {
    box-shadow: 0 0 16px 3px color-mix(in srgb, var(--accent) 85%, transparent);
  }
}
@media (prefers-reduced-motion: reduce) {
  .appnav a.active {
    animation: none;
    box-shadow: 0 0 10px 1px color-mix(in srgb, var(--accent) 70%, transparent);
  }
}
.appnav a:not(.active):hover,
.appnav a:not(.active):active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text);
}
/* on narrow phones, drop the demo scenario switcher below the nav so they don't collide */
@media (max-width: 520px) {
  .scenario-switch {
    top: calc(3.4rem + env(safe-area-inset-top, 0px));
  }
}
.brand { text-align: center; margin: 1rem 0 1.5rem; }
.brand h1 {
  font-size: 1.45rem;
  font-weight: 800;
  background: linear-gradient(90deg, #fff, var(--accent) 60%, var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.brand p { color: var(--text-muted); font-size: .85rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: 0 8px 30px rgba(0,0,0,.25);
}
.card h2 { font-size: 1rem; margin-bottom: .85rem; }

/* collapsible card: the whole header is the toggle, sized as a thumb target */
.sec-head {
  display: flex; align-items: center; gap: .5rem; width: 100%;
  min-height: 44px; padding: 0; margin-bottom: .85rem;
  background: transparent; border: none; border-radius: 8px;
  color: var(--text); font-size: 1rem; font-weight: 700; text-align: left;
}
.sec-title { flex: 1; }
.sec-caret { flex: none; color: var(--text-muted); font-size: .85rem; transition: transform .15s ease; }
.card.collapsed .sec-caret { transform: rotate(-90deg); }
.card.collapsed .sec-head { margin-bottom: 0; }
.card.collapsed .sec-body { display: none; }
/* a collapsed card is just its header — drop the body's share of the padding */
.card.collapsed { padding-top: .85rem; padding-bottom: .85rem; }
@media (prefers-reduced-motion: reduce) {
  .sec-caret { transition: none; }
}

label { display: block; font-size: .82rem; color: var(--text-muted); margin: .75rem 0 .3rem; }
input, select, textarea {
  width: 100%;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  padding: .6rem .75rem;
  font-size: .95rem;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-text); border-color: transparent; }
textarea { resize: vertical; min-height: 3rem; }
.hint { font-size: .72rem; color: var(--text-muted); margin-top: .2rem; }

button {
  font-family: inherit;
  font-weight: 700;
  border: none;
  border-radius: 10px;
  padding: .65rem 1rem;
  cursor: pointer;
  font-size: .92rem;
  transition: transform .05s ease, opacity .15s ease;
}
button:active { transform: translateY(1px); }
button:disabled { opacity: .45; cursor: not-allowed; }
.btn-primary { background: linear-gradient(90deg, var(--accent), var(--accent-2)); color: #fff; width: 100%; }
.btn-ghost { background: var(--bg-soft); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: var(--danger); color: #fff; }
.row { display: flex; gap: .5rem; flex-wrap: wrap; }
.row > * { flex: 1; }

.pill { display: inline-flex; align-items: center; gap: .35rem; font-size: .72rem; padding: .15rem .55rem; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--border); }
.dot { width: .6rem; height: .6rem; border-radius: 50%; display: inline-block; }

.status { position: fixed; top: .6rem; right: .6rem; font-size: .72rem; padding: .25rem .6rem; border-radius: 999px; z-index: 50; }
.status.on { background: rgba(16,185,129,.15); color: var(--ok); border: 1px solid rgba(16,185,129,.4); }
.status.off { background: rgba(239,68,68,.15); color: var(--danger); border: 1px solid rgba(239,68,68,.4); }

.list { list-style: none; }
.list li {
  display: flex; align-items: center; gap: .6rem;
  padding: .55rem .25rem; border-bottom: 1px solid var(--border); font-size: .9rem;
}
.list li:last-child { border-bottom: none; }
.list .name { font-weight: 700; }
.list .meta { color: var(--text-muted); font-size: .78rem; }
.spacer { flex: 1; }

.tag { font-size: .68rem; color: var(--text-muted); background: var(--bg-soft); border-radius: 6px; padding: .05rem .4rem; }
/* unread marker: Links somebody else drew to you since you last looked. Filled
   accent (not muted like .tag) because it's the one thing on the header that is
   asking to be noticed. */
.badge { font-size: .68rem; font-weight: 700; color: #fff; background: var(--accent-2); border-radius: 999px; padding: .05rem .4rem; margin-left: .3rem; }
.empty { color: var(--text-muted); font-size: .85rem; text-align: center; padding: 1rem; }
.toast { position: fixed; bottom: 1rem; left: 50%; transform: translateX(-50%); background: var(--surface); border: 1px solid var(--border); padding: .6rem 1rem; border-radius: 10px; font-size: .85rem; z-index: 60; box-shadow: 0 8px 30px rgba(0,0,0,.4); }

.counter { display: flex; gap: 1.5rem; justify-content: center; }
.counter .n { font-size: 1.6rem; font-weight: 900; font-family: var(--mono); }
.counter .l { font-size: .72rem; color: var(--text-muted); }

.qr-box { margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border); text-align: center; }
.qr-box .hint { margin-bottom: .6rem; }
.qr-img { display: inline-flex; padding: 10px; background: #fff; border-radius: 12px; line-height: 0; }
.qr-img img { display: block; width: 200px; height: 200px; image-rendering: pixelated; }

/* connect: search results */
.results { list-style: none; margin: .4rem 0 0; padding: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; max-height: 16rem; overflow-y: auto; }
.results li { display: flex; align-items: center; gap: .6rem; padding: .55rem .7rem; border-bottom: 1px solid var(--border); font-size: .9rem; cursor: pointer; }
.results li:last-child { border-bottom: none; }
.results li:hover { background: var(--bg-soft); }
.results li.empty { cursor: default; color: var(--text-muted); justify-content: center; }
.results .name { font-weight: 700; }
.results .meta { color: var(--text-muted); font-size: .78rem; }

/* connect: partner card shown as a modal */
.modal { position: fixed; inset: 0; z-index: 80; display: flex; align-items: center; justify-content: center; padding: 1rem; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(4,7,18,.72); backdrop-filter: blur(2px); }
.modal-card { position: relative; z-index: 1; width: 100%; max-width: 26rem; max-height: 90vh; overflow-y: auto; margin: 0; animation: modal-pop .16s ease-out; }
@keyframes modal-pop { from { opacity: 0; transform: translateY(8px) scale(.98); } to { opacity: 1; transform: none; } }
.commons { margin-top: .6rem; display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.chip { font-size: .72rem; font-weight: 700; color: #fff; background: var(--accent); border-radius: 999px; padding: .1rem .55rem; }

/* selectable interest-category chips (registration form) */
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .35rem; }
.chip-toggle { font-size: .82rem; padding: .3rem .7rem; border-radius: 999px; background: var(--bg-soft); border: 1px solid var(--border); color: var(--text); cursor: pointer; transition: background .12s, border-color .12s; }
.chip-toggle[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 700; }
/* per-category tag input (registration): chips + autocomplete dropdown */
.tag-area { display: flex; flex-direction: column; gap: .6rem; margin-top: .5rem; }
.tagcat { border: 1px solid var(--border); border-radius: 10px; padding: .5rem .6rem; background: var(--bg-soft); }
.tagcat-head { font-size: .82rem; font-weight: 700; margin-bottom: .35rem; }
.tagcat-chips { display: flex; flex-wrap: wrap; gap: .35rem; margin-bottom: .35rem; }
.tagchip { display: inline-flex; align-items: center; gap: .25rem; font-size: .78rem; padding: .12rem .5rem; border-radius: 999px; background: var(--accent); color: #fff; font-weight: 700; }
.tagchip-x { border: none; background: transparent; color: #fff; cursor: pointer; font-size: .95rem; line-height: 1; padding: 0; }
.tag-input-wrap { position: relative; }
.tag-input { width: 100%; box-sizing: border-box; }
.tag-suggest { list-style: none; margin: .25rem 0 0; padding: 0; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--bg); }
.tag-suggest li { display: flex; align-items: center; gap: .5rem; padding: .45rem .6rem; font-size: .85rem; cursor: pointer; border-bottom: 1px solid var(--border); }
.tag-suggest li:last-child { border-bottom: none; }
.tag-suggest li:hover { background: var(--bg-soft); }
.tag-suggest li.new { color: var(--accent-text); font-weight: 700; }
.tag-suggest .meta { color: var(--text-muted); font-size: .78rem; }

/* recommendation list: strength badge (strong = shared exact tag, weak = shared category) */
.results .shared { font-size: .74rem; font-weight: 700; white-space: nowrap; }
.results .shared.strong { color: #f59e0b; }
/* near = 意味が近いだけの一致。strong(橙) と weak(灰) の中間に置く */
.results .shared.near { color: #22d3ee; }
.results .shared.weak { color: var(--text-muted); }
.chip.strong { background: #f59e0b; color: #241a00; }
.list li.tappable { cursor: pointer; border-radius: 8px; }
.list li.tappable:hover { background: var(--bg-soft); }

/* mock-only demo scenario switcher (top center) */
.scenario-switch { position: fixed; top: .5rem; left: 50%; transform: translateX(-50%); z-index: 60;
  display: flex; align-items: center; gap: .4rem; font-size: .75rem; color: var(--text-muted);
  background: rgba(8,12,28,.9); backdrop-filter: blur(6px); border: 1px solid var(--border);
  border-radius: 999px; padding: .25rem .6rem; box-shadow: 0 6px 20px rgba(0,0,0,.4); }
.scenario-switch select { background: transparent; color: var(--text); border: none; font-size: .8rem; font-weight: 700; cursor: pointer; outline: none; }
.scenario-switch select option { background: #0b1020; color: var(--text); }
.reveal { margin-top: .6rem; padding: .5rem .7rem; border-radius: 10px; background: color-mix(in srgb, var(--accent) 14%, transparent); border: 1px solid var(--accent); display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; }
.reveal .teaser { color: var(--text-muted); font-size: .82rem; }

/* activity log panel (screen only): tabs + timestamped scrollable list */
.log { position: fixed; top: 5.5rem; right: 1.75rem; z-index: 30; width: 22rem; max-width: 38vw; display: flex; flex-direction: column; background: rgba(8,12,28,.9); backdrop-filter: blur(6px); box-shadow: 0 8px 30px rgba(0,0,0,.45); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.log-header { display: flex; align-items: center; justify-content: space-between; padding: .35rem .4rem .35rem .7rem; }
.log-title { font-size: .72rem; font-weight: 700; letter-spacing: .06em; color: var(--text-muted); }
.log-toggle { width: 1.8rem; height: 1.8rem; padding: 0; background: transparent; color: var(--text-muted); border: 1px solid var(--border); border-radius: 8px; font-size: .8rem; cursor: pointer; }
.log-toggle:hover { color: var(--text); }
.log.minimized .log-body { display: none; }
.log-list { max-height: 50vh; overflow-y: auto; padding: .3rem .5rem; border-top: 1px solid var(--border); }
.log-item { display: flex; gap: .5rem; align-items: baseline; padding: .25rem 0; font-size: .85rem; border-bottom: 1px solid rgba(255,255,255,.05); }
.log-item:last-child { border-bottom: none; }
.log-time { flex: none; font-family: var(--mono); font-size: .72rem; color: var(--text-muted); }
.log-text { color: var(--text); }
.log-empty { color: var(--text-muted); font-size: .8rem; text-align: center; padding: .8rem; }

/* connection celebration burst */
.confetti-layer { position: fixed; inset: 0; z-index: 90; pointer-events: none; overflow: hidden; }
.confetti { position: absolute; top: 50%; left: 50%; font-size: 1.8rem; will-change: transform, opacity; animation: confetti-burst 1.1s cubic-bezier(.15,.7,.3,1) forwards; }
@keyframes confetti-burst {
  0% { transform: translate(-50%, -50%) scale(.3); opacity: 0; }
  12% { opacity: 1; }
  100% { transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) rotate(var(--rot)) scale(1.1); opacity: 0; }
}

/* tap-a-star popover: pops up just above the tapped star (positioned in JS) */
.sheet { position: fixed; inset: 0; z-index: 80; }
.sheet[hidden] { display: none; }
.sheet-backdrop { position: absolute; inset: 0; background: transparent; }
.sheet-panel { position: absolute; z-index: 1; width: 14rem; max-width: 88vw; padding: .8rem; border-radius: 12px; box-shadow: 0 10px 32px rgba(0,0,0,.5); transform-origin: bottom center; animation: pop-up .16s cubic-bezier(.2,.9,.3,1.25); }
.sheet-panel.below { transform-origin: top center; }
.sheet-panel.wide { width: 19rem; } /* detail / emoji picker need more room than the icon menu */
@keyframes pop-up { from { opacity: 0; transform: scale(.85) translateY(6px); } to { opacity: 1; transform: none; } }
.sheet-name { font-size: .95rem; font-weight: 800; text-align: center; margin-bottom: .15rem; }
.sheet-sub { font-size: .75rem; color: var(--text-muted); text-align: center; margin-bottom: .6rem; }
.sheet-view .row { gap: .6rem; }
.sheet-view .row .btn-ghost, .sheet-view .row .btn-primary { flex: 1; }
emoji-picker {
  width: 100%;
  height: 280px;
  margin-top: .5rem;
  --background: var(--surface);
  --border-color: var(--border);
  --input-border-color: var(--border);
  --input-font-color: var(--text);
  --input-placeholder-color: var(--text-muted);
  --category-font-color: var(--text-muted);
  --num-columns: 7;
  --emoji-size: 1.3rem;
}

/* ---- 近似スコアのゲージ（admin）----
   生のコサイン値は 0.6〜0.95 の狭い帯に固まるため、0〜1 で描くと全部が右端に
   張り付いて差が読めない。有効帯の下限（サーバの gaugeFloor）を 0% として
   引き伸ばし、閾値の位置に縦線を出す。「どこで切るか」を目で決めるための道具。 */
/* overflow は敢えて切らない。閾値マーカーはバーの上下にはみ出して初めて
   「線」として読めるので、clip すると目的を失う。塗りは自前の border-radius
   で丸めるため、clip は不要。 */
.gauge {
  position: relative;
  height: .5rem;
  border-radius: 999px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  flex: 1 1 6rem;
  min-width: 4rem;
}
.gauge-fill {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}
.gauge.below .gauge-fill { background: var(--border); }
/* 閾値マーカー。overflow:hidden の外に出すため親に重ねる */
.gauge-mark {
  position: absolute;
  top: -2px;
  bottom: -2px;
  width: 2px;
  background: var(--ok);
  box-shadow: 0 0 4px 1px color-mix(in srgb, var(--ok) 70%, transparent);
}
.gauge-row { display: flex; align-items: center; gap: .5rem; width: 100%; }
.gauge-row .score { font-variant-numeric: tabular-nums; font-size: .72rem; color: var(--text-muted); min-width: 3rem; text-align: right; }
.gauge-row.below .name { color: var(--text-muted); }