/* ぶたぶた日程調整：スマホの縦長を基本に、1段組。色はすべて下の印で決める */
:root {
  --bg: #f7f5f1; --paper: #ffffff; --ink: #2a2724; --muted: #6c655e; --line: #e4ded6;
  --accent: #1f7a6d; --accent-ink: #ffffff; --accent-soft: #e2f1ed;
  --pig: #f2a7b8; --pig-deep: #d76f8a;
  --o: #2f86d6; --t: #f2b630; --x: #a3a9b0; --off: #ebe8e3; --cell: #ffffff;
  --best: #d76f8a; --danger: #c0392b; --line-green: #06c755;
  --caution-bg: #fff6e0; --caution-ink: #6b4d00;
  --radius: 12px;
  --font: "Hiragino Maru Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic", Meiryo, sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #171615; --paper: #222120; --ink: #ece8e3; --muted: #a9a29a; --line: #3a3734;
    --accent: #4fbfac; --accent-ink: #0f1a18; --accent-soft: #1f3330;
    --o: #4c9fe6; --t: #e5ab2c; --x: #6f757c; --off: #2c2a28; --cell: #2f2d2b;
    --best: #f08aa4; --danger: #ff7b6b; --caution-bg: #3a3020; --caution-ink: #f3d79a;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font-family: var(--font); font-size: 16px; line-height: 1.7; }
a { color: var(--accent); }
img { max-width: 100%; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

.top { background: var(--paper); border-bottom: 1px solid var(--line); }
.top-in, .wrap, .foot { max-width: 980px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); }
.top-in { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding-block: 8px; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 18px; }
.top-link { font-size: 14px; }
.wrap { padding-block: 20px 48px; display: grid; gap: 20px; }
.wrap > * { min-width: 0; }
.foot { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: center; padding-block: 24px 40px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); }

.hero { padding-block: 12px 4px; }
.hero h1 { font-size: clamp(24px, 5.5vw, 34px); line-height: 1.35; margin: 0 0 8px; text-wrap: balance; }
.hero p { margin: 0; color: var(--muted); }

.step { background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; display: grid; gap: 10px; min-width: 0; }
.step > * { min-width: 0; }
.step h2 { font-size: 18px; margin: 0; display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.step-no { background: var(--accent); color: var(--accent-ink); font-size: 12px; letter-spacing: .06em; padding: 2px 8px; border-radius: 999px; }
#editor, #owner-editor { display: grid; gap: 20px; }
.note { margin: 0; color: var(--muted); font-size: 13px; }
.empty { color: var(--muted); margin: 0; }
.caution { margin: 0; background: var(--caution-bg); color: var(--caution-ink); border-radius: 8px; padding: 8px 12px; font-size: 13px; }

.field-label { font-size: 14px; font-weight: 700; display: block; margin-bottom: -4px; }
input[type="text"], textarea, select {
  font: inherit; font-size: 16px; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px; width: 100%;
}
select { width: auto; padding: 6px 8px; }
textarea { resize: vertical; }
.two { display: grid; gap: 10px; }
@media (min-width: 720px) { .two { grid-template-columns: 1fr 1.4fr; } }

button { font: inherit; cursor: pointer; }
.btn-main, .btn-sub, .btn-line {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 8px 20px;
  border-radius: 999px; font-weight: 700; font-size: 16px; text-decoration: none; border: 2px solid transparent;
}
.btn-main { background: var(--accent); color: var(--accent-ink); }
.btn-main:disabled { opacity: .55; cursor: wait; }
.btn-sub { background: var(--paper); color: var(--accent); border-color: var(--accent); }
.btn-line { background: var(--line-green); color: #fff; }
.small { min-height: 34px; padding: 4px 14px; font-size: 14px; }
.link-btn { background: none; border: 0; color: var(--accent); text-decoration: underline; padding: 4px 6px; font-size: 14px; min-height: 32px; }
.link-btn:disabled { color: var(--muted); text-decoration: none; cursor: default; }
.danger { color: var(--danger); }
.submit-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.submit-row .btn-main { min-width: 200px; }
.form-error { margin: 0; color: var(--danger); font-weight: 700; min-height: 0; }
.form-error:empty { display: none; }

/* 候補の出し方 */
.mode-switch { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.mode-opt { display: flex; gap: 10px; align-items: flex-start; border: 2px solid var(--line); border-radius: 10px; padding: 10px 12px; cursor: pointer; }
.mode-opt:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.mode-opt input { margin-top: 6px; accent-color: var(--accent); }
.mode-tx { display: grid; }

/* カレンダー */
.cal-wrap { display: grid; gap: 8px; }
.cal-months { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.cal-title { text-align: center; font-weight: 700; margin-bottom: 4px; }
.cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 3px; touch-action: pan-y; user-select: none; -webkit-user-select: none; }
.cal-wd { text-align: center; font-size: 12px; color: var(--muted); }
.cal-day { min-height: 40px; border: 1px solid var(--line); background: var(--cell); color: var(--ink); border-radius: 8px; font-size: 15px; touch-action: pan-y; }
.cal-day.sun, .sun { color: #d0454c; }
.cal-day.sat, .sat { color: #2f6fd0; }
.cal-day.today { border-color: var(--pig-deep); border-width: 2px; }
.cal-day.on { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.cal-day:disabled { color: var(--muted); opacity: .45; cursor: default; }
.cal-nav { display: flex; justify-content: space-between; align-items: center; gap: 8px; }

/* 時間の帯 */
.bulk { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; font-size: 14px; }
.day-list { display: grid; gap: 14px; }
.day-row { display: grid; gap: 4px; }
.day-head { display: flex; flex-wrap: wrap; align-items: center; gap: 2px 8px; }
.day-head b { margin-right: 6px; }
.strip { display: grid; gap: 6px; user-select: none; -webkit-user-select: none; }
.seg { display: grid; gap: 1px; }
.hours, .cells { display: grid; grid-template-columns: repeat(var(--n), 1fr); }
.hours span { grid-column: span 2; font-size: 11px; color: var(--muted); padding-left: 2px; border-left: 1px solid var(--line); }
.cells { border: 1px solid var(--line); border-radius: 6px; overflow: hidden; touch-action: pan-y; }
.cell { height: 34px; background: var(--off); border-left: 1px dotted var(--line); cursor: pointer; }
.cell.hh { border-left: 1px solid var(--line); }
.cell.on { background: var(--accent); }
.strip .cell:not(.off) { background: var(--cell); }
.strip .cell.on { background: var(--accent); }
.cell.m-o, .strip .cell.m-o { background: var(--o); }
.cell.m-t, .strip .cell.m-t { background: var(--t); }
.cell.m-x, .strip .cell.m-x { background: var(--x); }
.cell.off { background: repeating-linear-gradient(135deg, var(--off) 0 4px, transparent 4px 7px); cursor: not-allowed; }

.brush { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.brush-opt { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border: 2px solid var(--line); border-radius: 999px; cursor: pointer; font-size: 14px; }
.brush-opt input { accent-color: var(--accent); }
.brush-opt:has(input:checked) { border-color: var(--ink); font-weight: 700; }
.b-o span::before, .b-t span::before, .b-x span::before { content: ""; display: inline-block; width: 12px; height: 12px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.b-o span::before { background: var(--o); } .b-t span::before { background: var(--t); } .b-x span::before { background: var(--x); }

/* 調整さん式の回答 */
.slot-answer { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.slot-answer li { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 6px 12px; padding: 6px 0; border-bottom: 1px solid var(--line); }
.slot-label { font-weight: 700; overflow-wrap: anywhere; }
.mark-btns { display: flex; gap: 6px; }
.mark-btn { width: 48px; height: 44px; border-radius: 10px; border: 2px solid var(--line); background: var(--paper); color: var(--muted); font-size: 20px; font-weight: 700; }
.mark-btn[aria-pressed="true"].m-o { background: var(--o); border-color: var(--o); color: #fff; }
.mark-btn[aria-pressed="true"].m-t { background: var(--t); border-color: var(--t); color: #3b2a00; }
.mark-btn[aria-pressed="true"].m-x { background: var(--x); border-color: var(--x); color: #fff; }

/* イベントの見出し */
.ev-head { display: flex; flex-wrap: wrap; gap: 12px 20px; justify-content: space-between; align-items: flex-end; background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.ev-main { display: grid; gap: 4px; min-width: 0; flex: 1 1 320px; }
.ev-title { font-size: clamp(22px, 5vw, 28px); margin: 0; line-height: 1.35; overflow-wrap: anywhere; }
.ev-memo { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.ev-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { justify-self: start; font-size: 12px; background: var(--accent-soft); color: var(--accent); border-radius: 999px; padding: 1px 10px; font-weight: 700; }
.toast { position: sticky; top: 8px; z-index: 5; margin: 0; background: var(--ink); color: var(--bg); border-radius: 10px; padding: 8px 14px; text-align: center; }

/* みんなの予定 */
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin: 0; font-size: 13px; color: var(--muted); }
.sw { display: inline-block; width: 14px; height: 14px; border-radius: 3px; margin-right: 4px; vertical-align: -2px; border: 1px solid var(--line); }
.sw.m-o { background: var(--o); } .sw.m-t { background: var(--t); } .sw.m-x { background: var(--x); }
.sw.off { background: repeating-linear-gradient(135deg, var(--off) 0 3px, var(--cell) 3px 6px); }
.sw.best { background: var(--cell); border: 2px solid var(--best); }
#board { display: grid; gap: 16px; }
#board > *, .tl-block { min-width: 0; }
.tl-block h3 { margin: 0 0 4px; font-size: 16px; }
.scroll-x { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; font-size: 13px; }
th, td { border-bottom: 1px solid var(--line); }
.sticky { position: sticky; left: 0; z-index: 1; background: var(--paper); text-align: left; padding: 4px 8px; min-width: 96px; max-width: 140px; border-right: 1px solid var(--line); font-weight: 400; }
.tl td { width: 14px; min-width: 14px; height: 30px; padding: 0; border-left: 1px dotted var(--line); background: var(--cell); }
.tl td.hh { border-left: 1px solid var(--line); }
.tl td.off { background: var(--off); }
.tl td.m-o { background: var(--o); } .tl td.m-t { background: var(--t); } .tl td.m-x { background: var(--x); }
.tl th.hr { font-size: 11px; color: var(--muted); font-weight: 400; text-align: left; padding: 2px 0 2px 2px; border-left: 1px solid var(--line); }
.tl tr.sum td { font-size: 11px; text-align: center; font-variant-numeric: tabular-nums; }
.tl tr.sum td.best { background: var(--best); color: #fff; font-weight: 700; }
.slots th.col { font-size: 13px; padding: 6px 8px; min-width: 88px; text-align: center; border-left: 1px solid var(--line); vertical-align: bottom; }
.slots td.mk { text-align: center; padding: 6px; font-size: 18px; font-weight: 700; border-left: 1px solid var(--line); color: var(--muted); }
.slots td.m-o { color: var(--o); } .slots td.m-t { color: var(--t); } .slots td.m-x { color: var(--x); }
.slots .sum td.mk { font-size: 14px; color: var(--ink); font-variant-numeric: tabular-nums; }
.slots .best { box-shadow: inset 2px 0 0 var(--best), inset -2px 0 0 var(--best); }
.slots th.best { color: var(--best); }
.name-btn { background: none; border: 0; padding: 4px 0; color: var(--accent); text-decoration: underline; font-size: 14px; text-align: left; overflow-wrap: anywhere; min-height: 30px; }
.sum .sticky { font-size: 12px; color: var(--muted); }
.comments { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.comments li { border-bottom: 1px dashed var(--line); padding-bottom: 6px; }
.comments p { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }

.confirm { border: 2px solid var(--pig-deep); border-radius: 10px; padding: 12px; display: grid; gap: 8px; }
.confirm p { margin: 0; font-weight: 700; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.owner summary { cursor: pointer; font-weight: 700; font-size: 17px; }
.owner[open] summary { margin-bottom: 4px; }

/* 作成完了 */
.overlay { position: fixed; inset: 0; z-index: 20; background: rgba(20, 18, 16, .55); display: grid; place-items: center; padding: 16px; }
.sheet { background: var(--paper); border-radius: 16px; padding: 20px; max-width: 520px; width: 100%; display: grid; gap: 10px; max-height: 100%; overflow-y: auto; }
.sheet h2 { margin: 0; font-size: 20px; }
.sheet p { margin: 0; }
.url-text { font-size: 13px; color: var(--muted); overflow-wrap: anywhere; user-select: all; }

/* 使い方・ポリシー */
.howto { display: grid; gap: 10px; }
.howto h2 { font-size: 20px; margin: 12px 0 0; }
.flow { margin: 0; padding-left: 1.4em; display: grid; gap: 6px; }
.faq { margin: 0; display: grid; gap: 4px; }
.faq dt { font-weight: 700; margin-top: 8px; }
.faq dd { margin: 0; color: var(--muted); }
.prose { max-width: 760px; }
.prose h1 { margin: 0; font-size: 26px; }
.prose h2 { font-size: 18px; margin: 12px 0 0; }
.prose p, .prose ul { margin: 0; }

/* 候補に付ける時刻（いくつでも選べる） */
.time-pick { display: grid; gap: 6px; }
.time-chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(58px, 1fr)); gap: 4px; }
.time-chip { min-height: 36px; border: 1px solid var(--line); background: var(--cell); color: var(--ink); border-radius: 8px; font-size: 14px; font-variant-numeric: tabular-nums; }
.time-chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }

/* 広告：ボタンから離し、「広告」と書く */
.ad { margin-block: 24px; min-height: 100px; display: grid; gap: 4px; }
.ad-label { margin: 0; font-size: 11px; color: var(--muted); letter-spacing: .1em; }

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }