/* ── リセット & ベース ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary:    #2e8b6e;
  --primary-dk: #1f6b52;
  --primary-lt: #e8f5f1;
  --accent:     #f0a500;
  --danger:     #d44;
  --bg:         #f7f9f8;
  --card:       #ffffff;
  --text:       #2c3e35;
  --muted:      #7a9088;
  --border:     #dde8e4;
  --radius:     12px;
  --shadow:     0 2px 12px rgba(0,0,0,.08);
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN",
               "Noto Sans JP", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; }

/* ── ヘッダー ─────────────────────────────────────── */
.site-header {
  background: var(--primary);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.site-header .logo { font-size: 18px; font-weight: 700; letter-spacing: .5px; }
.site-header .subtitle { font-size: 12px; opacity: .85; }

/* ── コンテナ ─────────────────────────────────────── */
.container { max-width: 520px; margin: 0 auto; padding: 20px 16px 60px; }

/* ── カード ───────────────────────────────────────── */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 16px;
}
.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--primary-dk);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-title::before {
  content: "";
  display: inline-block;
  width: 4px; height: 16px;
  background: var(--primary);
  border-radius: 2px;
}

/* ── カレンダー ───────────────────────────────────── */
.cal-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.cal-nav button {
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  color: var(--primary);
  font-size: 14px;
}
.cal-nav button:hover { background: var(--primary-lt); }
.cal-month { font-weight: 700; font-size: 16px; }

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  text-align: center;
}
.cal-dow {
  font-size: 11px;
  color: var(--muted);
  padding: 4px 0;
  font-weight: 600;
}
.cal-dow.sun { color: #e44; }
.cal-dow.sat { color: #44e; }

.cal-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: background .15s;
  position: relative;
  user-select: none;
}
.cal-day:empty { cursor: default; }
.cal-day.other-month { color: #ccc; cursor: default; }
.cal-day.past { color: #ccc; cursor: default; }
.cal-day.today { font-weight: 700; }
.cal-day.today .day-num::after {
  content: "今日";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 8px;
  color: var(--primary);
}
.cal-day.has-slots { background: var(--primary-lt); color: var(--primary-dk); }
.cal-day.has-slots:hover { background: #c5e8df; }
.cal-day.selected { background: var(--primary); color: #fff !important; }
.cal-day.no-slots { color: #ccc; cursor: not-allowed; }
.cal-day .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 2px;
}
.cal-day.selected .dot { background: #fff; }

/* ── 時間帯ボタン ─────────────────────────────────── */
.time-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.time-btn {
  padding: 12px 6px;
  border: 2px solid var(--border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  text-align: center;
  transition: all .15s;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}
.time-btn:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-lt); }
.time-btn.selected { border-color: var(--primary); background: var(--primary); color: #fff; }
.time-btn small { display: block; font-size: 11px; font-weight: 400; margin-top: 2px; opacity: .75; }
.weekday-label { display: block; font-size: 9px; font-weight: 600; margin-top: 3px; color: var(--primary); opacity: .85; letter-spacing: .02em; }

/* ── フォーム ─────────────────────────────────────── */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  margin-bottom: 6px;
}
.form-group label span { color: #e44; margin-left: 2px; }
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  background: #fff;
  color: var(--text);
  outline: none;
  transition: border .15s;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { resize: vertical; min-height: 72px; }

/* ── ボタン ───────────────────────────────────────── */
.btn {
  display: block;
  width: 100%;
  padding: 15px;
  border: none;
  border-radius: 12px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  text-align: center;
  transition: all .15s;
  letter-spacing: .5px;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dk); }
.btn-primary:disabled { background: #aaa; cursor: not-allowed; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-outline {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover { background: var(--primary-lt); }
.btn-sm { padding: 8px 14px; font-size: 13px; width: auto; border-radius: 8px; }

/* ── 確認画面 ─────────────────────────────────────── */
.confirm-box {
  background: var(--primary-lt);
  border: 1.5px solid var(--primary);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
}
.confirm-row { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); }
.confirm-row:last-child { border-bottom: none; }
.confirm-row dt { color: var(--muted); font-size: 13px; }
.confirm-row dd { font-weight: 600; }

/* ── 完了画面 ─────────────────────────────────────── */
.success-icon {
  font-size: 56px;
  text-align: center;
  margin: 20px 0 10px;
}
.success-title {
  font-size: 22px;
  font-weight: 700;
  text-align: center;
  color: var(--primary);
  margin-bottom: 6px;
}
.success-sub {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 20px;
}

/* ── ステップ表示 ─────────────────────────────────── */
.steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-bottom: 20px;
  padding: 0 10px;
}
.step {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--muted);
}
.step-num {
  width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--border);
  color: var(--muted);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
.step.active .step-num { background: var(--primary); color: #fff; }
.step.active { color: var(--primary-dk); font-weight: 600; }
.step.done .step-num { background: var(--primary-lt); color: var(--primary); }
.step-arrow { color: #ccc; font-size: 10px; }

/* ── 選択済みバナー ───────────────────────────────── */
.selected-info {
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 16px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ── 管理画面固有 ─────────────────────────────────── */
.admin-header {
  background: #1f3330;
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.admin-header .title { font-weight: 700; font-size: 16px; }

.admin-container { max-width: 900px; margin: 0 auto; padding: 20px 16px 60px; }

.admin-cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}
.admin-cal-day {
  min-height: 64px;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: background .15s;
}
.admin-cal-day:hover { background: var(--primary-lt); }
.admin-cal-day .day-label { font-weight: 700; margin-bottom: 4px; font-size: 13px; }
.admin-cal-day .badge {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 10px;
  margin: 1px;
}
.badge-avail  { background: var(--primary-lt); color: var(--primary-dk); }
.badge-booked { background: #fdecea; color: #c33; }

.slot-list { list-style: none; }
.slot-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  background: #fff;
}
.slot-item.booked { background: #fff8f8; border-color: #f5b5b5; }
.slot-item.unavail { background: #f9f9f9; opacity: .7; }

.res-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.res-table th { background: #f0f4f2; padding: 10px 8px; text-align: left; font-weight: 600; color: var(--muted); }
.res-table td { padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
.res-table tr:last-child td { border-bottom: none; }

.tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.tag-confirmed { background: var(--primary-lt); color: var(--primary-dk); }
.tag-cancelled { background: #eee; color: #999; }

/* ── モーダル ─────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  background: #fff;
  border-radius: var(--radius);
  padding: 24px;
  width: 100%; max-width: 460px;
  max-height: 90vh;
  overflow-y: auto;
}
.modal-title { font-size: 17px; font-weight: 700; margin-bottom: 18px; }
.modal-footer { display: flex; gap: 10px; margin-top: 20px; }
.hidden { display: none !important; }

/* ── トースト通知 ─────────────────────────────────── */
#toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%);
  background: #2c3e35; color: #fff;
  padding: 12px 24px; border-radius: 24px;
  font-size: 14px; z-index: 999;
  opacity: 0; transition: opacity .3s;
  pointer-events: none; white-space: nowrap;
}
#toast.show { opacity: 1; }

/* ── レスポンシブ ─────────────────────────────────── */
@media (max-width: 400px) {
  .time-grid { grid-template-columns: repeat(2, 1fr); }
  .time-btn { font-size: 14px; }
}