/* ============================================
   久米川卓球部 予約システム - スタイル
   ============================================ */
:root {
  --bk-primary: #0c5cf2;
  --bk-primary-dark: #0844b3;
  --bk-accent: #ff5a2b;
  --bk-success: #19a974;
  --bk-warn: #f4b400;
  --bk-danger: #e44;
  --bk-bg: #ffffff;
  --bk-bg-alt: #f5f7fb;
  --bk-text: #1c2230;
  --bk-text-sub: #5b6377;
  --bk-border: #e3e7ef;
  --bk-radius: 12px;
  --bk-shadow-sm: 0 2px 6px rgba(15, 30, 60, 0.06);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  color: var(--bk-text);
  background: var(--bk-bg-alt);
  line-height: 1.6;
}
.container { max-width: 760px; margin: 0 auto; padding: 0 16px; }

/* embedモード (HP内iframe表示): 背景を透明に、外側パディング調整 */
body.bk-embed {
  background: transparent;
}
body.bk-embed .container { padding: 8px 12px; }

/* LIFFバナー (LINEログイン中の表示) */
.bk-liff-banner {
  background: linear-gradient(90deg, #06C755 0%, #06A146 100%);
  color: #fff;
  padding: 8px 14px;
  text-align: center;
  font-size: 13px;
}
.bk-liff-banner .bk-liff-icon { margin-right: 6px; }
.bk-liff-banner strong { font-weight: 700; }

/* ===== DEMOバナー ===== */
.demo-ribbon {
  background: repeating-linear-gradient(45deg, #ff5a2b, #ff5a2b 14px, #ff7a3d 14px, #ff7a3d 28px);
  color: #fff;
  text-align: center;
  font-weight: 700;
  font-size: 13px;
  padding: 8px 12px;
  letter-spacing: 0.02em;
}

/* ===== Header ===== */
.bk-header {
  background: #fff;
  border-bottom: 1px solid var(--bk-border);
  padding: 14px 0;
}
.bk-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.bk-logo {
  font-weight: 800;
  color: var(--bk-text);
  text-decoration: none;
  font-size: 17px;
}
.bk-sub {
  color: var(--bk-text-sub);
  font-size: 13px;
}

/* ===== Facility Tabs ===== */
.bk-tabs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 8px;
  margin: 18px 0 12px;
}
.bk-tab {
  display: block;
  text-align: center;
  padding: 12px 14px;
  background: #fff;
  border: 2px solid var(--bk-border);
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  color: var(--bk-text-sub);
  transition: all 0.15s;
}
.bk-tab:hover { color: var(--bk-text); }
.bk-tab-active {
  background: var(--bk-primary);
  color: #fff !important;
  border-color: var(--bk-primary);
}

/* ===== Price summary ===== */
.bk-price-summary {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 12px 14px;
  margin-bottom: 14px;
  font-size: 14px;
  display: grid;
  gap: 10px;
}
.bk-price-heading {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--bk-text);
  min-width: 0;
}
.bk-price-heading strong {
  font-size: 14px;
  line-height: 1.4;
}
.bk-price-heading span {
  color: var(--bk-text-sub);
  font-size: 12px;
  font-weight: 700;
}
.bk-price-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px;
}
.bk-price-pill {
  background: #f4f7ff;
  border: 1px solid #dbe6ff;
  color: var(--bk-text);
  padding: 10px 12px;
  border-radius: 8px;
  display: grid;
  grid-template-columns: minmax(96px, 1fr) auto;
  grid-template-rows: auto auto;
  column-gap: 12px;
  row-gap: 3px;
  align-items: center;
  min-width: 0;
}
.bk-price-label {
  grid-row: 1 / 3;
  color: var(--bk-primary);
  font-size: 14px;
  font-weight: 900;
  line-height: 1.35;
}
.bk-price-main,
.bk-price-sub {
  display: grid;
  grid-template-columns: 52px auto auto;
  gap: 4px;
  justify-content: end;
  align-items: baseline;
  white-space: nowrap;
  line-height: 1.25;
}
.bk-price-main span,
.bk-price-sub span {
  color: var(--bk-text-sub);
  font-size: 11px;
  font-weight: 900;
}
.bk-price-main strong,
.bk-price-sub strong {
  color: var(--bk-text);
  font-size: 15px;
  font-weight: 900;
}
.bk-price-main em,
.bk-price-sub em {
  color: var(--bk-text-sub);
  font-size: 10px;
  font-style: normal;
  font-weight: 700;
}
@media (max-width: 560px) {
  .bk-price-heading {
    display: grid;
    gap: 2px;
  }
  .bk-price-list {
    grid-template-columns: 1fr;
  }
  .bk-price-pill {
    grid-template-columns: minmax(112px, 1fr) auto;
  }
}

/* ===== Date Navigation ===== */
.bk-date-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 10px 14px;
  margin-bottom: 16px;
}
.bk-date-btn {
  padding: 8px 14px;
  background: var(--bk-bg-alt);
  border-radius: 8px;
  color: var(--bk-text);
  text-decoration: none;
  font-weight: 600;
  font-size: 13px;
}
.bk-date-btn:hover { background: var(--bk-primary); color: #fff; }
.bk-date-btn.bk-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}
.bk-date-form {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
}
.bk-date-input {
  font-size: 16px;
  padding: 6px 10px;
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  font-family: inherit;
}
.bk-date-dow {
  font-weight: 700;
  color: var(--bk-primary);
}

/* ===== Slot Grid ===== */
.bk-h3 {
  font-size: 15px;
  margin: 18px 0 10px;
  color: var(--bk-text);
}
.bk-slot-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(86px, 1fr));
  gap: 8px;
  margin-bottom: 18px;
}
.bk-slot {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 8px;
  background: #fff;
  border: 2px solid var(--bk-border);
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}
.bk-slot input { display: none; }
.bk-slot-time {
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.02em;
  line-height: 1.1;
}
.bk-slot-end {
  font-size: 11px;
  color: var(--bk-text-sub);
  margin-top: 2px;
  line-height: 1;
}
.bk-slot-label {
  font-size: 11px;
  color: var(--bk-text-sub);
  margin-top: 3px;
  line-height: 1;
}
.bk-slot-available:hover { border-color: var(--bk-primary); }
.bk-slot-available input:checked ~ * { color: #fff; }
.bk-slot-available:has(input:checked) {
  background: var(--bk-primary);
  border-color: var(--bk-primary);
  color: #fff;
}
.bk-slot-available:has(input:checked) .bk-slot-label,
.bk-slot-available:has(input:checked) .bk-slot-end { color: #fff; }
.bk-slot-booked {
  background: #f5f5f5;
  border-color: #ddd;
  color: #999;
  cursor: not-allowed;
}
.bk-slot-booked .bk-slot-time { text-decoration: line-through; }
.bk-slot-turnover {
  background: repeating-linear-gradient(
    -45deg, #fff5e6, #fff5e6 4px, #fff 4px, #fff 8px
  );
  border-color: #f0d0a0;
  color: #9a7a40;
  cursor: not-allowed;
}
/* 選択された利用時間 (2h/3h) では足りないスロット */
.bk-slot-too-short {
  opacity: 0.4;
  cursor: not-allowed;
  background: #f8f8f8;
}

/* ===== 利用時間セレクター ===== */
.bk-duration {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.bk-duration label {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 14px;
  background: #fff;
  border: 2px solid var(--bk-border);
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.15s;
}
.bk-duration label:has(input:checked) {
  background: var(--bk-primary);
  color: #fff;
  border-color: var(--bk-primary);
}
.bk-duration input { display: none; }

/* ===== People ===== */
.bk-people {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 12px 16px;
  margin-bottom: 18px;
}
.bk-people-input {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 12px;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px dashed var(--bk-border);
}
.bk-people-input:last-of-type { border-bottom: 0; }
.bk-people-label { font-size: 14px; font-weight: 600; }
.bk-people-yen {
  color: var(--bk-text-sub);
  font-size: 13px;
  white-space: nowrap;
}

/* ===== 人数ステッパー (+/-) ===== */
.bk-stepper {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--bk-border);
  border-radius: 10px;
  overflow: hidden;
  background: #fff;
}
.bk-step {
  width: 44px;
  height: 44px;
  border: none;
  background: var(--bk-bg-alt);
  font-size: 22px;
  font-weight: 700;
  color: var(--bk-primary);
  cursor: pointer;
  line-height: 1;
  transition: background 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.bk-step:active { background: var(--bk-primary); color: #fff; }
.bk-stepper input[type="number"] {
  width: 52px;
  height: 44px;
  border: none;
  border-left: 1px solid var(--bk-border);
  border-right: 1px solid var(--bk-border);
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  font-family: inherit;
  background: #fff;
  color: var(--bk-text);
  -moz-appearance: textfield;
  pointer-events: none; /* readonly: タップしてもキーボード出さない */
}
.bk-stepper input[type="number"]::-webkit-outer-spin-button,
.bk-stepper input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.bk-people-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--bk-text-sub);
}

/* ===== Customer info ===== */
.bk-customer {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 12px 16px;
  margin-bottom: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.bk-customer label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 13px;
  font-weight: 600;
}
.bk-customer input {
  padding: 8px 10px;
  border: 1px solid var(--bk-border);
  border-radius: 6px;
  font-size: 16px;
  font-family: inherit;
}
.bk-customer input:focus {
  outline: none;
  border-color: var(--bk-primary);
  box-shadow: 0 0 0 3px rgba(12, 92, 242, 0.12);
}
.bk-req { color: var(--bk-accent); }

/* ===== Summary ===== */
.bk-summary {
  background: var(--bk-bg-alt);
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 14px 18px;
  margin-bottom: 16px;
  font-size: 14px;
}
.bk-summary > div { margin: 4px 0; }
.bk-summary strong { color: var(--bk-primary); font-size: 16px; }
#sumPrice { font-size: 20px !important; }

/* ===== Actions ===== */
.bk-actions { text-align: center; margin: 18px 0; }
.bk-btn {
  display: inline-block;
  padding: 14px 32px;
  border: none;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s;
}
.bk-btn-primary {
  background: var(--bk-primary);
  color: #fff;
}
.bk-btn-primary:hover {
  background: var(--bk-primary-dark);
  transform: translateY(-1px);
}

/* ===== Closed / Empty ===== */
.bk-closed {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 40px 20px;
  text-align: center;
  color: var(--bk-text-sub);
  margin: 18px 0;
}

/* ===== Legend ===== */
.bk-legend {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin: 20px 0;
  font-size: 12px;
  color: var(--bk-text-sub);
}
.bk-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.bk-legend-dot {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--bk-border);
  border-radius: 4px;
}
.bk-legend-dot.bk-slot-available { background: #fff; border-color: var(--bk-primary); }
.bk-legend-dot.bk-slot-booked    { background: #f5f5f5; }
.bk-legend-dot.bk-slot-turnover  {
  background: repeating-linear-gradient(-45deg, #fff5e6, #fff5e6 2px, #fff 2px, #fff 4px);
  border-color: #f0d0a0;
}

/* ===== Note ===== */
.bk-note {
  font-size: 12px;
  color: var(--bk-text-sub);
  text-align: center;
  line-height: 1.8;
  margin: 24px 0;
}

/* ===== Reserve form ===== */
.bk-reserve-form {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-radius: var(--bk-radius);
  padding: 16px 20px;
  box-shadow: var(--bk-shadow-sm);
}

/* ===== Completion page ===== */
.bk-complete {
  background: #fff;
  border-radius: var(--bk-radius);
  padding: 32px 24px;
  margin: 20px 0;
  text-align: center;
}
.bk-complete-icon {
  font-size: 48px;
  margin-bottom: 8px;
}
.bk-complete-num {
  font-family: monospace;
  font-size: 20px;
  color: var(--bk-primary);
  background: var(--bk-bg-alt);
  padding: 6px 14px;
  border-radius: 8px;
  display: inline-block;
  margin: 8px 0 16px;
}
.bk-complete-detail {
  text-align: left;
  background: var(--bk-bg-alt);
  border-radius: 8px;
  padding: 14px 18px;
  margin: 16px 0;
  font-size: 14px;
}
.bk-complete-detail dt {
  font-weight: 700;
  color: var(--bk-text-sub);
  font-size: 12px;
  margin-top: 6px;
}
.bk-complete-detail dt:first-child { margin-top: 0; }
.bk-complete-detail dd { margin: 0 0 4px; }
.bk-error-msg {
  background: #fdecec;
  border: 1px solid #f5b8b8;
  color: #a01616;
  padding: 14px;
  border-radius: 8px;
  margin: 16px 0;
}

/* ===== マイ予約 (my.php) ===== */
.bk-myres {
  background: #fff;
  border: 1px solid var(--bk-border);
  border-left: 4px solid var(--bk-primary);
  border-radius: var(--bk-radius);
  padding: 16px;
  margin-bottom: 12px;
  box-shadow: var(--bk-shadow-sm);
}
.bk-myres-head { display: flex; align-items: center; gap: 8px; margin-bottom: 6px; }
.bk-myres-fac { font-weight: 800; font-size: 16px; }
.bk-myres-today { background: var(--bk-accent); color: #fff; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 999px; }
.bk-myres-dt { font-size: 15px; font-weight: 700; color: var(--bk-primary); }
.bk-myres-info { font-size: 13px; color: var(--bk-text-sub); margin: 4px 0 12px; }
.bk-myres-actions { display: flex; gap: 8px; }
.bk-btn-mini { padding: 8px 16px; font-size: 13px; }
.bk-btn-danger { background: var(--bk-danger); color: #fff; }
.bk-btn-danger:hover { filter: brightness(1.1); }

/* ===== モーダル ===== */
.bk-modal[hidden] { display: none !important; }
.bk-modal {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: 16px;
}
.bk-modal-box {
  background: #fff; border-radius: var(--bk-radius);
  padding: 24px; width: 100%; max-width: 400px;
}
.bk-modal-title { margin: 0 0 14px; font-size: 17px; }
.bk-modal-target { font-size: 13px; color: var(--bk-text-sub); margin-bottom: 12px; }
.bk-change-panel {
  border: 1px solid var(--bk-border);
  border-radius: 8px;
  padding: 10px 12px;
  margin-bottom: 10px;
}
.bk-change-before { background: #f7f9fc; }
.bk-current-line {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 8px;
  align-items: baseline;
  margin: 4px 0;
}
.bk-current-line span {
  font-size: 12px;
  color: var(--bk-text-sub);
  font-weight: 800;
}
.bk-current-line strong {
  font-size: 16px;
  color: var(--bk-text);
  font-weight: 900;
  line-height: 1.35;
}
.bk-change-after { background: #eef5ff; border-color: rgba(12, 92, 242, 0.24); }
.bk-change-label {
  font-size: 11px;
  font-weight: 800;
  color: var(--bk-text-sub);
  margin-bottom: 4px;
}
.bk-change-main {
  font-size: 15px;
  font-weight: 800;
  color: var(--bk-text);
  line-height: 1.45;
}
.bk-change-after .bk-change-main { color: var(--bk-primary); }
.bk-change-sub {
  font-size: 12px;
  color: var(--bk-text-sub);
  line-height: 1.45;
  margin-top: 2px;
}
.bk-modal-field { display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 600; margin-bottom: 12px; flex: 1; }
.bk-modal-field input, .bk-modal-field select {
  height: 44px; padding: 0 12px; border: 1px solid var(--bk-border);
  border-radius: 8px; font-size: 15px; font-family: inherit; box-sizing: border-box;
}
.bk-modal-row { display: flex; gap: 10px; }
.bk-modal-actions { display: flex; gap: 10px; margin-top: 8px; }
.bk-modal-actions .bk-btn { flex: 1; }
.bk-modal-cancel {
  display: block;
  width: 100%;
  margin-top: 10px;
  border-radius: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 540px) {
  .bk-customer { grid-template-columns: 1fr; }
  .bk-slot-grid { grid-template-columns: repeat(auto-fill, minmax(70px, 1fr)); }
  .bk-slot-time { font-size: 14px; }
  .bk-tabs { grid-template-columns: 1fr 1fr; }
  .bk-date-nav { flex-wrap: wrap; }
  .bk-price-summary {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 12px;
  }
  .bk-date-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    padding: 10px;
  }
  .bk-date-form {
    grid-column: 1 / -1;
    grid-row: 1;
    justify-content: center;
    width: 100%;
  }
  .bk-date-btn {
    min-height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 10px;
    white-space: nowrap;
  }
  .bk-date-input {
    width: min(100%, 170px);
    text-align: center;
  }
  .bk-join-notice,
  .bk-member-guide {
    align-items: stretch;
    flex-direction: column;
  }
  .bk-join-actions {
    width: 100%;
    justify-content: stretch;
  }
  .bk-join-actions .bk-join-btn,
  .bk-join-actions .bk-login-btn {
    flex: 1 1 130px;
  }
}

.bk-join-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff7ec;
  border: 1px solid #ffd9a8;
  border-radius: 10px;
  padding: 10px 12px;
  margin: -4px 0 14px;
}
.bk-join-notice .bk-note {
  margin: 0;
  color: #8a5a00;
}
.bk-member-guide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: #fff7ec;
  border: 1px solid #ffd9a8;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 13px;
  line-height: 1.7;
  color: #8a5a00;
  margin: 6px 0 4px;
}
.bk-join-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
.bk-login-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--bk-primary);
  color: var(--bk-primary);
  background: #fff;
  font-weight: 900;
  text-decoration: none;
}
.bk-login-btn:hover {
  background: #eef5ff;
}
.bk-join-btn {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--bk-accent);
  color: #fff;
  font-weight: 900;
  text-decoration: none;
  box-shadow: 0 3px 10px rgba(255, 90, 43, 0.28);
}
.bk-join-btn:hover {
  background: #e84b20;
}