:root {
  --bg: #f4f6f8;
  --surface: #ffffff;
  --text: #1b1f24;
  --muted: #5b6470;
  --border: #dde1e6;
  --accent: #0f6cbd;
  --accent-soft: #e6f0fa;
  --accent-text: #ffffff;
  --bar-bg: #0b2545;
  --bar-text: #f2f5f9;
  --ok: #107c41;
  --ok-soft: #e5f4ec;
  --warn: #9a4b00;
  --warn-soft: #fdeedc;
  --danger: #b42318;
  --grid: #e9ecf0;
  --map-street: #c9d0d8;
  --map-block: #eef1f4;
  --map-venue: #cfe2f6;
  --map-venue-on: #0f6cbd;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06);
  --radius: 12px;
  --tabbar-h: 60px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --surface: #1b2027;
    --text: #e8ebef;
    --muted: #9aa4b0;
    --border: #2d343e;
    --accent: #5aa9ec;
    --accent-soft: #19324b;
    --accent-text: #0b1520;
    --bar-bg: #0a1a30;
    --bar-text: #e8ebef;
    --ok: #6ccb95;
    --ok-soft: #173525;
    --warn: #f0b860;
    --warn-soft: #3a2c14;
    --danger: #ff8a80;
    --grid: #262c35;
    --map-street: #3a434f;
    --map-block: #20262e;
    --map-venue: #1d3a58;
    --map-venue-on: #5aa9ec;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Segoe UI", "Yu Gothic UI", "Meiryo", sans-serif;
  font-size: 15px;
  line-height: 1.65;
  padding-bottom: calc(var(--tabbar-h) + env(safe-area-inset-bottom));
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.4; }
button { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* app bar */
.appbar { background: var(--bar-bg); color: var(--bar-text); padding-top: env(safe-area-inset-top); }
.appbar-inner { max-width: 760px; margin: 0 auto; padding: 12px 16px; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.appbar h1 { margin: 0; font-size: 19px; }
.appbar-sub { margin: 0; font-size: 11.5px; opacity: .75; }
.appbar-note { margin: 0; font-size: 11.5px; opacity: .8; text-align: right; line-height: 1.4; }

.page { max-width: 760px; margin: 0 auto; padding: 0 16px; }
.view-title { font-size: 18px; margin: 16px 0 8px; }

/* buttons */
.btn {
  border: 1px solid var(--border); background: var(--surface); border-radius: 10px;
  padding: 8px 14px; min-height: 40px; cursor: pointer; font-size: 14px; white-space: nowrap;
}
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.btn.danger { color: var(--danger); }
.icon-btn { background: none; border: 0; font-size: 18px; width: 40px; height: 40px; cursor: pointer; color: var(--muted); }

/* search */
.searchbar {
  position: sticky; top: 0; z-index: 5; background: var(--bg);
  display: flex; gap: 8px; padding: 12px 0 8px;
}
.searchbar input {
  flex: 1; min-width: 0; padding: 9px 12px; min-height: 42px;
  border: 1px solid var(--border); border-radius: 10px;
  background: var(--surface); color: var(--text); font: inherit; font-size: 16px; /* 16px 未満だと iOS がズームする */
}
.filter-btn { position: relative; }
.dot {
  display: inline-block; min-width: 18px; height: 18px; line-height: 18px; margin-left: 6px; padding: 0 5px;
  border-radius: 9px; background: var(--accent); color: var(--accent-text); font-size: 11px; font-weight: 700; text-align: center;
}

/* day tabs */
.days { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 8px; scrollbar-width: none; }
.days::-webkit-scrollbar { display: none; }
.day {
  flex: 0 0 auto; border: 1px solid var(--border); background: var(--surface);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; cursor: pointer; white-space: nowrap; min-height: 36px;
}
.day[aria-pressed="true"] { background: var(--text); color: var(--bg); border-color: var(--text); }
.day .n { opacity: .6; margin-left: 4px; font-size: 11.5px; }

.active-filters { display: flex; flex-wrap: wrap; gap: 6px; }
.active-filters:empty { display: none; }
.active-filters .chip { background: var(--accent-soft); border-color: transparent; }
.count { color: var(--muted); font-size: 13px; margin: 6px 0; }

/* featured */
.featured { display: flex; gap: 10px; overflow-x: auto; padding: 4px 0 8px; scroll-snap-type: x mandatory; scrollbar-width: none; }
.featured::-webkit-scrollbar { display: none; }
.featured:empty { display: none; }
.feat {
  flex: 0 0 82%; max-width: 320px; scroll-snap-align: start;
  background: var(--accent-soft); border: 0; border-radius: var(--radius);
  padding: 12px 14px; cursor: pointer; text-align: left;
}
.feat .label { font-size: 11.5px; font-weight: 700; color: var(--accent); }
.feat .t { font-weight: 600; margin: 2px 0; line-height: 1.45; }
.feat .w { font-size: 12.5px; color: var(--muted); }

/* list */
.group-head { font-size: 14px; margin: 18px 0 8px; color: var(--muted); font-weight: 700; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; margin-bottom: 10px; box-shadow: var(--shadow); overflow-wrap: anywhere;
}
.card.flash { outline: 3px solid var(--accent); }
.card-top { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; }
.time { font-weight: 700; font-variant-numeric: tabular-nums; font-size: 15px; }
.badges { display: contents; }
.badge { font-size: 11px; padding: 1px 7px; border-radius: 4px; background: var(--bg); color: var(--muted); white-space: nowrap; }
.badge.type { color: var(--text); font-weight: 600; }
.badge.ok { background: var(--ok-soft); color: var(--ok); }
.badge.warn { background: var(--warn-soft); color: var(--warn); }
.card-title { margin: 6px 0 4px; font-size: 16px; }
.card-summary {
  margin: 0; color: var(--text);
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.card.open .card-summary { -webkit-line-clamp: unset; display: block; }
.more summary { cursor: pointer; color: var(--accent); font-size: 13px; padding: 6px 0; list-style: none; }
.more summary::-webkit-details-marker { display: none; }
.more summary::after { content: " ▾"; }
.more[open] summary::after { content: " ▴"; }
.more p { margin: 0 0 6px; font-size: 13px; color: var(--muted); }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 12.5px; border: 0; background: none; color: var(--accent); padding: 2px 0; cursor: pointer; }
.tag.theme { background: var(--accent-soft); padding: 2px 8px; border-radius: 4px; }
.card-foot { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.place {
  background: none; border: 0; padding: 4px 0; cursor: pointer; text-align: left;
  font-size: 12.5px; color: var(--muted); min-width: 0; flex: 0 1 auto;
}
.place[data-venue] { text-decoration: underline dotted; }
.spacer { flex: 1; }
.official { font-size: 13px; white-space: nowrap; }
.add { padding: 6px 12px; min-height: 36px; font-size: 13px; }
.add[aria-pressed="true"] { background: var(--ok-soft); color: var(--ok); border-color: transparent; font-weight: 600; }
.empty { text-align: center; color: var(--muted); padding: 40px 8px; }

/* pager */
.pager { display: flex; justify-content: center; align-items: center; gap: 4px; flex-wrap: wrap; margin: 16px 0 24px; }
.pager:empty { display: none; }
.pager button {
  min-width: 40px; height: 40px; padding: 0 8px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--surface); cursor: pointer; font-variant-numeric: tabular-nums;
}
.pager button[aria-current="page"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 700; }
.pager button:disabled { opacity: .4; cursor: default; }
.pager .gap { color: var(--muted); padding: 0 2px; }

/* chips */
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--border); background: var(--surface);
  border-radius: 999px; padding: 5px 12px; font-size: 13px; cursor: pointer; min-height: 34px;
}
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.chip .n { opacity: .6; margin-left: 4px; font-size: 11px; }

/* sheets */
.sheet {
  width: 100%; max-width: 760px; max-height: 88vh; margin: auto auto 0; padding: 0;
  border: 0; border-radius: 16px 16px 0 0; background: var(--surface); color: var(--text);
  display: none; flex-direction: column;
}
.sheet[open] { display: flex; }
.sheet::backdrop { background: rgba(0, 0, 0, .45); }
.sheet-head { display: flex; justify-content: space-between; align-items: center; padding: 8px 8px 0 16px; }
.sheet-head h2 { margin: 0; font-size: 16px; }
.sheet-body { overflow-y: auto; padding: 0 16px 16px; }
.sheet-body .card { box-shadow: none; }
.sheet-foot {
  display: flex; gap: 8px; padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
}
.sheet-foot .primary { flex: 1; }
fieldset { border: 0; padding: 0; margin: 16px 0 0; }
legend { font-weight: 700; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.check { display: flex; gap: 10px; align-items: center; min-height: 40px; cursor: pointer; }
.check input { width: 20px; height: 20px; }

/* timeline */
.notice { border-radius: 10px; padding: 10px 12px; font-size: 13.5px; margin: 4px 0 10px; }
.notice.warn { background: var(--warn-soft); color: var(--warn); }
.notice.info { background: var(--accent-soft); }
.timeline { position: relative; margin: 8px 0 16px 44px; }
.hour { position: absolute; left: -44px; right: 0; border-top: 1px solid var(--grid); }
.hour span { position: absolute; top: -9px; left: 0; width: 38px; font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.ev {
  position: absolute; border-radius: 8px; padding: 4px 6px; overflow: hidden; cursor: pointer; text-align: left;
  background: var(--accent-soft); border: 1px solid var(--accent); border-left-width: 4px;
  font-size: 12px; line-height: 1.35;
}
.ev.conflict { background: var(--warn-soft); border-color: var(--warn); }
.ev .et { font-weight: 700; font-variant-numeric: tabular-nums; }
.ev .tt { display: block; font-weight: 600; }
.ev .pl { display: block; color: var(--muted); font-size: 11px; }
/* 15〜30分の予定は1行に詰める */
.ev.short { display: flex; align-items: center; gap: 4px; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
.ev.short .tt { overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.ev.short .pl { display: none; }
.plan-list .card { margin-bottom: 8px; }
.plan-actions { display: flex; flex-direction: column; gap: 8px; margin: 12px 0 24px; }

/* map */
.map-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 8px; }
.map-card svg { display: block; width: 100%; height: auto; }
.map-card .street { stroke: var(--map-street); stroke-width: 14; }
.map-card .street-label { fill: var(--muted); font-size: 11px; }
.map-card .block { fill: var(--map-block); }
.map-card .venue { fill: var(--map-venue); stroke: var(--map-venue-on); stroke-width: 1; cursor: pointer; }
.map-card .venue.on { fill: var(--map-venue-on); }
.map-card .venue-label { fill: var(--text); font-size: 12px; font-weight: 700; pointer-events: none; }
.map-card .venue-label.on { fill: var(--accent-text); }
.map-card .sub-label { fill: var(--muted); font-size: 10.5px; pointer-events: none; }
.map-card .compass { fill: var(--muted); font-size: 11px; }
.note { font-size: 12.5px; color: var(--muted); }
.venue-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px; margin: 10px 0; scroll-margin-top: 12px;
}
.venue-card.on { outline: 3px solid var(--accent); }
.venue-card h3 { margin: 0; font-size: 16px; }
.venue-card .desc { margin: 2px 0 8px; font-size: 13px; color: var(--muted); }
.venue-card .rooms { margin: 6px 0; padding: 0; list-style: none; }
.venue-card .rooms li { display: flex; justify-content: space-between; gap: 8px; border-top: 1px solid var(--grid); }
.venue-card .rooms button { background: none; border: 0; padding: 8px 0; cursor: pointer; text-align: left; color: var(--accent); flex: 1; }
.venue-card .rooms .n { color: var(--muted); font-size: 12.5px; padding: 8px 0; white-space: nowrap; }
.venue-card .acts { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 8px; }
.venue-card .floor { font-size: 12.5px; font-weight: 700; color: var(--muted); margin: 10px 0 0; }

/* tab bar */
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 10;
  display: flex; background: var(--surface); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabbar a {
  flex: 1; height: var(--tabbar-h); display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-decoration: none; color: var(--muted); font-size: 11px; position: relative;
}
.tabbar a[aria-current="page"] { color: var(--accent); font-weight: 700; }
.tabbar .ico { font-size: 20px; line-height: 1.2; }
.tab-badge {
  position: absolute; top: 6px; left: calc(50% + 8px); min-width: 18px; height: 18px; padding: 0 5px;
  border-radius: 9px; background: var(--danger); color: #fff; font-size: 11px; line-height: 18px; text-align: center;
}

.toast {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(var(--tabbar-h) + 12px + env(safe-area-inset-bottom));
  z-index: 20; max-width: calc(100% - 32px); background: var(--text); color: var(--bg);
  padding: 10px 14px; border-radius: 10px; font-size: 13.5px; box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
}

.site-footer { font-size: 12px; color: var(--muted); padding: 24px 0; border-top: 1px solid var(--border); margin-top: 16px; }
.site-footer p { margin: 0 0 8px; }

@media (min-width: 761px) {
  .sheet { margin: auto; border-radius: 16px; }
}