/* 外見哲学レッスン 予約ポータル。色はChatGPT版の画面から取った値 */
:root {
  --bg: #f2f7f8;
  --surface: #ffffff;
  --primary: #26c4cf;        /* ロゴ・主ボタン */
  --primary-strong: #14a9b4; /* 進み具合のバー */
  --ink-primary: #13787f;    /* 選択中のタブ・リンク */
  --label: #368f98;          /* 英字の見出し */
  --text: #172628;
  --muted: #677e7d;
  --faint: #8fa1a2;
  --soft: #eaf5f6;           /* 小さなラベル */
  --info: #effafb;           /* お知らせの帯 */
  --selected: #f0fbfc;       /* 選んだカード */
  --disabled: #edf4f4;
  --border: #e0ebea;
  --line: #e3eded;
  --avatar-bg: #ece5e8;
  --avatar-ink: #946676;
  --danger: #b4545a;
  --danger-bg: #fbeeee;
  --stripe-1: #6ea9ac; --stripe-2: #d98588; --stripe-3: #e5bd6d; --stripe-4: #92b9bc; --stripe-5: #b5a4ca;
  --radius-lg: 24px;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(23, 38, 40, .03);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: 'Noto Sans JP', system-ui, -apple-system, 'Hiragino Sans', sans-serif;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: .02em;
}
button, input, select, textarea { font: inherit; color: inherit; letter-spacing: inherit; }
a { color: var(--ink-primary); }

.page { max-width: 1180px; margin: 0 auto; padding: 24px 16px 0; }

/* ヘッダー */
.site-header { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark { width: 44px; height: 44px; border-radius: 12px; background: var(--primary); color: #0c4f55; display: grid; place-items: center; flex: none; }
.brand-name { font-size: 20px; font-weight: 700; line-height: 1.3; }
.brand-sub { font-size: 12px; color: var(--muted); letter-spacing: .2em; }
.persona { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 14px; border-radius: 999px; background: var(--soft); color: #4a7675; font-size: 13px; border: 0; }
.persona select { border: 0; background: var(--soft); color: #4a7675; border-radius: 999px; padding: 6px 30px 6px 14px; font-size: 13px; appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, #4a7675 50%), linear-gradient(135deg, #4a7675 50%, transparent 50%);
  background-position: calc(100% - 15px) 52%, calc(100% - 10px) 52%; background-size: 5px 5px; background-repeat: no-repeat; max-width: 220px; }

.dev-note { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: 13px; margin: 14px 0 0; }
.i-info { width: 16px; height: 16px; border: 1.4px solid currentColor; border-radius: 50%; display: inline-grid; place-items: center; flex: none; }
.i-info::before { content: 'i'; font-size: 10px; font-weight: 700; line-height: 1; }

/* タブ */
.tabs { display: flex; gap: 6px; margin-top: 18px; border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tab { position: relative; display: inline-flex; align-items: center; gap: 8px; padding: 10px 14px 14px; border: 0; background: none; color: var(--muted); font-size: 15px; cursor: pointer; white-space: nowrap; border-radius: 10px 10px 0 0; }
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] { color: var(--ink-primary); font-weight: 500; }
.tab[aria-selected="true"]::after { content: ''; position: absolute; left: 6px; right: 6px; bottom: -1px; height: 3px; border-radius: 3px; background: var(--ink-primary); }
.tab:focus-visible { outline: 3px solid rgba(38, 196, 207, .45); outline-offset: -3px; }
.tab .count { font-size: 12px; background: var(--soft); color: var(--ink-primary); border-radius: 6px; padding: 0 7px; }
.tab svg { width: 18px; height: 18px; }

/* 見出し */
.hero { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin: 44px 0 32px; flex-wrap: wrap; }
.eyebrow { font-size: 13px; color: var(--label); letter-spacing: .22em; font-weight: 500; margin: 0 0 8px; }
.hero h1 { font-size: clamp(28px, 4vw, 40px); font-weight: 400; letter-spacing: .08em; margin: 0; line-height: 1.35; }
.hero p { color: var(--muted); margin: 10px 0 0; }
.hero-aside { display: flex; gap: 12px; align-items: center; color: var(--ink-primary); }
.hero-aside small { display: block; color: var(--muted); font-size: 12px; }

/* カード */
.card { background: var(--surface); border-radius: var(--radius-lg); border: 1px solid var(--line); box-shadow: var(--shadow); padding: 32px; }
.card + .card { margin-top: 24px; }
.card h2 { font-size: 20px; font-weight: 500; margin: 0 0 20px; display: flex; align-items: center; gap: 12px; }
.step-no { width: 30px; height: 30px; border-radius: 50%; background: var(--info); color: var(--ink-primary); display: inline-grid; place-items: center; font-size: 15px; font-weight: 400; flex: none; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.card-head h2 { margin: 0; }

.book-grid { display: grid; grid-template-columns: minmax(280px, 380px) 1fr; gap: 28px; align-items: start; }
@media (max-width: 860px) { .book-grid { grid-template-columns: 1fr; } .card { padding: 22px; } }

/* コースのカード */
.course-visual { margin-top: 20px; border-radius: 20px; background: var(--primary); color: #0c3c41; padding: 26px 28px 22px; min-height: 200px; display: flex; flex-direction: column; }
.course-visual .en { font-size: 12px; letter-spacing: .28em; }
.course-visual .copy { font-size: 26px; line-height: 1.6; margin-top: 18px; letter-spacing: .06em; }
.stripes { margin-top: auto; align-self: flex-end; display: flex; gap: 5px; }
.stripes i { width: 32px; height: 9px; border-radius: 2px; display: block; }
.course-name { font-size: 20px; margin: 22px 0 0; font-weight: 400; }
.course-meta { color: var(--muted); font-size: 14px; }
.progress { display: grid; gap: 6px; margin: 18px 0 10px; }
.progress i { height: 7px; border-radius: 4px; background: var(--disabled); display: block; }
.progress i.on { background: var(--primary-strong); }
.progress i.done { background: var(--ink-primary); }
.count-row { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding-bottom: 18px; border-bottom: 1px solid var(--line); }
.count-row strong { font-size: 40px; font-weight: 500; }
.count-row span { color: var(--muted); }
.count-row small { color: var(--muted); font-size: 13px; }
.facts { list-style: none; padding: 16px 0; margin: 0; display: grid; gap: 10px; color: var(--muted); border-bottom: 1px solid var(--line); }
.facts li { display: flex; gap: 10px; align-items: flex-start; }
.facts li::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); margin-top: 10px; flex: none; }
.limits { padding-top: 16px; display: grid; gap: 6px; }
.limits .note { color: var(--faint); font-size: 13px; }

/* 入力 */
label.field { display: grid; gap: 6px; font-size: 14px; color: var(--muted); }
.input, select.input, textarea.input { width: 100%; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); padding: 12px 14px; color: var(--text); font-size: 15px; }
select.input { appearance: none; padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position: calc(100% - 20px) 52%, calc(100% - 15px) 52%; background-size: 5px 5px; background-repeat: no-repeat; }
.input:focus, .btn:focus-visible { outline: 3px solid rgba(38, 196, 207, .35); outline-offset: 1px; border-color: var(--primary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px 24px; }
@media (max-width: 700px) { .form-grid { grid-template-columns: 1fr; } }
.check { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 14px; }

/* ボタン */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 12px; padding: 12px 22px; border: 1px solid var(--border); background: var(--surface); color: var(--ink-primary); font-weight: 500; cursor: pointer; text-decoration: none; font-size: 15px; }
.btn:hover { background: var(--selected); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #0f3d42; }
.btn-primary:hover { background: #22b6c1; }
.btn-danger { color: var(--danger); }
.btn-danger:hover { background: var(--danger-bg); }
.btn-small { padding: 7px 14px; font-size: 13px; border-radius: 10px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }
.btn-wide { width: 100%; }
.link { background: none; border: 0; color: var(--ink-primary); cursor: pointer; padding: 0; font-size: 14px; }

/* お知らせ */
.info { background: var(--info); color: #5f8689; border-radius: 12px; padding: 12px 16px; font-size: 14px; display: flex; gap: 10px; align-items: flex-start; }
.info .i-info { margin-top: 4px; color: var(--ink-primary); }
.errors { background: var(--danger-bg); color: var(--danger); border-radius: 12px; padding: 12px 16px; font-size: 14px; margin: 0 0 16px; }
.errors ul { margin: 0; padding-left: 18px; }
.badge { display: inline-block; font-size: 13px; background: var(--soft); color: #4a7675; border-radius: 999px; padding: 4px 14px; }

/* 担当者カード */
.qual { color: var(--muted); font-size: 15px; margin: 10px 0; }
.staff-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; }
.staff-card { position: relative; border: 1px solid var(--line); border-radius: 18px; padding: 22px 14px 14px; text-align: center; background: var(--surface); cursor: pointer; transition: border-color .15s; }
.staff-card:hover { border-color: var(--primary); }
.staff-card.selected { border: 2px solid var(--primary-strong); background: var(--selected); padding: 21px 13px 13px; }
.staff-card.selected::after { content: '✓'; position: absolute; top: 10px; right: 14px; color: var(--ink-primary); }
.staff-card.off { background: var(--disabled); cursor: not-allowed; opacity: .75; }
.staff-card.off .staff-name, .staff-card.off .staff-title { color: var(--faint); }
.avatar { width: 72px; height: 72px; border-radius: 50%; background: var(--avatar-bg); color: var(--avatar-ink); display: grid; place-items: center; font-size: 26px; margin: 0 auto 10px; overflow: hidden; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.staff-card.off .avatar { background: #e3ecec; color: #a6b4b4; }
.staff-name { font-weight: 700; font-size: 17px; }
.staff-title { color: var(--muted); font-size: 13px; min-height: 2.6em; }
.staff-card .link { margin-top: 8px; }
.off-label { font-size: 13px; color: var(--faint); }

/* 形式の選択 */
.format-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 700px) { .format-grid { grid-template-columns: 1fr; } }
.format { border: 1px solid var(--line); border-radius: 18px; padding: 20px; background: var(--surface); text-align: left; cursor: pointer; }
.format:hover { border-color: var(--primary); }
.format.selected { border: 2px solid var(--primary-strong); background: var(--selected); padding: 19px; }
.format strong { display: block; font-size: 17px; font-weight: 500; }
.format span { color: var(--muted); font-size: 14px; }

/* カレンダー */
.cal-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.cal-head strong { font-weight: 500; font-size: 17px; }
.cal { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal .dow { text-align: center; color: var(--faint); font-size: 12px; padding: 4px 0; }
.cal button { aspect-ratio: 1 / .82; border-radius: 12px; border: 1px solid transparent; background: none; color: #b7c4c4; font-size: 15px; cursor: default; }
.cal button.open { background: var(--info); color: var(--ink-primary); cursor: pointer; font-weight: 500; }
.cal button.open:hover { border-color: var(--primary); }
.cal button.picked { background: var(--primary); color: #0f3d42; }
.times { display: grid; grid-template-columns: repeat(auto-fill, minmax(92px, 1fr)); gap: 8px; margin-top: 16px; }
.times button { border: 1px solid var(--border); background: var(--surface); border-radius: 10px; padding: 10px 0; cursor: pointer; color: var(--ink-primary); }
.times button:hover { border-color: var(--primary); background: var(--selected); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; } }

.cart { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 18px; }
.cart-item { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px; border-radius: 12px; background: var(--info); margin-bottom: 8px; font-size: 15px; }
.done-box { text-align: center; padding: 32px 10px; color: var(--muted); }
.done-box .ok { width: 34px; height: 34px; border-radius: 50%; border: 1.6px solid var(--ink-primary); color: var(--ink-primary); display: inline-grid; place-items: center; margin-bottom: 12px; }
.done-box strong { display: block; color: var(--text); font-weight: 400; font-size: 20px; margin-bottom: 6px; }

/* 統計 */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 24px; }
@media (max-width: 760px) { .stats { grid-template-columns: 1fr; } }
.stat { background: #e9f4f5; border-radius: 18px; padding: 26px 30px; }
.stat strong { font-size: 38px; font-weight: 500; line-height: 1.2; display: block; }
.stat strong small { font-size: 16px; font-weight: 700; }
.stat span { color: var(--muted); font-size: 14px; }

/* 予約一覧 */
.lesson { display: grid; grid-template-columns: 80px 1fr auto; gap: 26px; padding: 26px 0; border-bottom: 1px solid var(--line); align-items: start; }
.lesson:last-child { border-bottom: 0; }
@media (max-width: 700px) { .lesson { grid-template-columns: 64px 1fr; } .lesson .actions { grid-column: 1 / -1; } }
.datebox { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; text-align: center; background: var(--surface); }
.datebox .m { background: var(--bg); font-size: 13px; padding: 4px 0; }
.datebox .d { font-size: 30px; padding: 4px 0 8px; }
.lesson h3 { margin: 8px 0 0; font-weight: 400; font-size: 19px; }
.lesson .when { font-size: 17px; }
.lesson .sub { color: var(--muted); font-size: 14px; line-height: 1.9; }
.lesson .actions { display: flex; flex-direction: column; gap: 8px; align-items: stretch; min-width: 170px; }
.tag { display: inline-block; background: var(--soft); color: #4a7675; border-radius: 999px; padding: 3px 14px; font-size: 13px; margin-right: 8px; }
.tag.done { background: #e2eeee; color: var(--muted); }
.muted { color: var(--muted); }

/* 講師画面 */
.slot-row { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; background: var(--info); border-radius: 12px; margin-bottom: 8px; }
.empty { background: var(--info); border-radius: 16px; padding: 34px 16px; text-align: center; color: var(--muted); }
.toolbar { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; margin-bottom: 26px; }
.toolbar .field { min-width: 220px; }

/* 運営管理 */
.subtabs { display: flex; gap: 6px; padding: 8px; background: #e7f2f3; border-radius: 18px; margin-bottom: 28px; overflow-x: auto; }
.subtab { border: 0; background: none; padding: 10px 22px; border-radius: 12px; color: var(--muted); cursor: pointer; white-space: nowrap; font-size: 15px; }
.subtab[aria-selected="true"] { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(23, 38, 40, .08); }
table.list { width: 100%; border-collapse: collapse; font-size: 14px; }
table.list th { text-align: left; color: var(--muted); font-weight: 400; padding: 8px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.list td { padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.table-wrap { overflow-x: auto; }
.hint { color: var(--faint); font-size: 13px; margin: 10px 0 0; }
.section-title { font-size: 17px; font-weight: 500; margin: 28px 0 12px; }
code.url { background: var(--info); padding: 2px 8px; border-radius: 6px; font-size: 13px; word-break: break-all; }

/* フッター・モーダル・トースト */
.site-footer { display: flex; justify-content: space-between; gap: 10px; color: var(--faint); font-size: 13px; padding: 30px 0 40px; margin-top: 56px; border-top: 1px solid var(--line); flex-wrap: wrap; }
.modal { position: fixed; inset: 0; background: rgba(23, 38, 40, .35); display: grid; place-items: center; padding: 16px; z-index: 20; }
.modal[hidden] { display: none; }
.modal-card { position: relative; background: var(--surface); border-radius: var(--radius-lg); padding: 32px; width: min(560px, 100%); max-height: 90vh; overflow: auto; }
.modal-close { position: absolute; top: 14px; right: 16px; border: 0; background: none; font-size: 24px; color: var(--muted); cursor: pointer; }
.modal-card h3 { margin: 0 0 14px; font-weight: 500; font-size: 20px; }
.modal-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 22px; flex-wrap: wrap; }
.toast { position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%); background: #173436; color: #fff; padding: 12px 22px; border-radius: 12px; z-index: 30; font-size: 14px; max-width: calc(100% - 32px); }
.toast[hidden] { display: none; }
.add-cal { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; margin-top: 18px; }
.btn-line { background: #06c755; border-color: #06c755; color: #fff; }
.btn-line:hover { background: #05b34c; }
.card ul { padding-left: 20px; color: var(--text); }
[hidden] { display: none !important; }