/* ==========================================================================
   ポイントカード詳細 — トークン
   白と水色を基調に、pt数が上がるほど背景色が濃くなる「積み上がっていく」
   配色でカード（ポイントカード）らしさを表現。
   ========================================================================== */

:root {
  --white:        #ffffff;
  --mizuiro-00:   #f2fafd;  /* ページ地色 */
  --mizuiro-01:   #e3f4fa;
  --mizuiro-02:   #cfeaf6;
  --mizuiro-03:   #b0defa;
  --mizuiro-04:   #8ccdef;
  --blue-05:      #62b9e6;
  --blue-06:      #3fa2d9;
  --blue-07:      #2c8bc4;
  --blue-08:      #1f76ab;
  --blue-09:      #17608c;
  --blue-10:      #124d72;

  --ink:          #113349;
  --ink-soft:     #3c5c6e;
  --line:         #cfe8f3;

  --font-display: 'M PLUS Rounded 1c', sans-serif;
  --font-body:    'Noto Sans JP', sans-serif;

  --max-width: 760px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--mizuiro-00);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); margin: 0; }

/* ==========================================================================
   暗証番号ロック（簡易的なクライアント側ゲート）
   ========================================================================== */

.lock-content { display: block; }

body.is-locked .lock-content { display: none; }

.lock-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(180deg, var(--mizuiro-01), var(--mizuiro-03));
}

body.is-locked .lock-overlay {
  display: flex;
}

.lock-card {
  width: 100%;
  max-width: 320px;
  background: var(--white);
  border-radius: 20px;
  padding: 32px 24px;
  box-shadow: 0 12px 32px rgba(17, 51, 73, 0.15);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.lock-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  text-align: center;
}

.lock-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 12px;
  border: 2px solid var(--mizuiro-03);
  font-size: 18px;
  letter-spacing: 0.2em;
  text-align: center;
  color: var(--ink);
  background: var(--mizuiro-00);
}

.lock-input:focus {
  outline: none;
  border-color: var(--blue-06);
}

.lock-button {
  width: 100%;
  padding: 12px 14px;
  border: none;
  border-radius: 12px;
  background: var(--blue-06);
  color: var(--white);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
}

.lock-button:hover { background: var(--blue-07); }

.lock-error {
  margin: 0;
  font-size: 12.5px;
  color: #c0392b;
  display: none;
}

.lock-error.is-visible { display: block; }

/* ==========================================================================
   ヒーロー画像
   ========================================================================== */

.hero {
  width: 100%;
  line-height: 0;
  background: var(--white);
}

.lock-content > header + .hero {
  margin-top: 60px;
}

.hero-image {
  display: block;
  width: 100%;
  height: auto;
}

/* ==========================================================================
   共通レイアウト
   ========================================================================== */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 96px;
}

main > section {
  margin-top: 56px;
}

.section-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--blue-09);
  letter-spacing: 0.02em;
  padding-bottom: 10px;
  margin-bottom: 20px;
  border-bottom: 3px solid var(--mizuiro-03);
}

.or {
  color: var(--blue-07);
  font-size: 0.85em;
  font-weight: 700;
  margin: 0 0.3em;
}

/* ==========================================================================
   ポイントの貯め方
   ========================================================================== */

.intro {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 24px;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.earn-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.earn-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
}

.earn-pt {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 32px;
  padding: 0 10px;
  background: var(--mizuiro-02);
  color: var(--blue-09);
  border-radius: 999px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 14px;
}

.term-list {
  margin: 0;
  padding-left: 16px;
  border-left: 2px solid var(--mizuiro-02);
}

.term-row {
  margin-bottom: 10px;
}

.term-row dt {
  font-size: 12px;
  color: var(--blue-07);
  font-weight: 700;
}

.term-row dd {
  margin: 2px 0 0;
  font-size: 15px;
}

.note-inline {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 13.5px;
  color: var(--ink-soft);
}

/* ==========================================================================
   特典一覧（ポイント段階カード）
   ========================================================================== */

.tier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tier {
  display: flex;
  align-items: stretch;
  border-radius: 16px;
  overflow: hidden;
}

.tier-pt {
  flex: none;
  width: 92px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 26px;
  background: rgba(255, 255, 255, 0.28);
}

.tier-pt small {
  font-size: 12px;
  font-weight: 700;
  margin-top: 2px;
}

.tier-pt .pt-suffix {
  margin-top: -2px;
  opacity: 0.85;
}

.tier-body {
  flex: 1;
  padding: 16px 18px;
  display: flex;
  align-items: center;
}

.tier-name {
  margin: 0;
  font-weight: 700;
  font-size: 15.5px;
}

.tier-detail {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
}

.tier-detail b {
  font-weight: 800;
}

.tier-detail-sub {
  font-size: 12.5px;
  opacity: 0.85;
}

/* pt が上がるほど濃い水色 → 青へ */
.tier--01 { background: var(--mizuiro-00); color: var(--ink); border: 1px solid var(--line); }
.tier--02 { background: var(--mizuiro-01); color: var(--ink); }
.tier--03 { background: var(--mizuiro-02); color: var(--ink); }
.tier--04 { background: var(--mizuiro-03); color: var(--ink); }
.tier--05 { background: var(--mizuiro-04); color: var(--ink); }
.tier--06 { background: var(--blue-06); color: var(--white); }
.tier--07 { background: var(--blue-07); color: var(--white); }
.tier--08 { background: var(--blue-08); color: var(--white); }
.tier--09 { background: var(--blue-09); color: var(--white); }
.tier--10 { background: var(--blue-10); color: var(--white); }

.tier-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 14px;
  text-align: center;
  color: var(--blue-08);
  font-weight: 700;
  font-size: 13.5px;
}

.tier-divider::before,
.tier-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--mizuiro-04);
}

.tag-new {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--white);
  color: var(--blue-08);
  font-size: 11px;
  font-weight: 800;
  vertical-align: middle;
}

.tier-note {
  list-style: none;
  font-size: 13px;
  color: var(--ink-soft);
  padding: 4px 4px 0;
}

/* ==========================================================================
   ルール系（特典ルール／日程調整／衣装）
   ========================================================================== */

.rules, .schedule, .costume {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 28px 24px;
}

.rule-list, .rule-sub {
  margin: 0;
  padding-left: 1.1em;
}

.rule-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 14.5px;
}

.rule-sub {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 13.5px;
  color: var(--ink-soft);
}

.step-list {
  list-style: none;
  counter-reset: step;
  margin: 0 0 24px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-list li {
  position: relative;
  padding-left: 44px;
  font-weight: 700;
  font-size: 15px;
  min-height: 32px;
  display: flex;
  align-items: center;
}

.step-list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--blue-06);
  color: var(--white);
  font-family: var(--font-display);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}

/* ==========================================================================
   レスポンシブ
   ========================================================================== */

@media (max-width: 600px) {
  main { padding: 0 16px 72px; }
  main > section { margin-top: 40px; }

  .intro-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .term-list {
    border-left: none;
    border-top: 2px solid var(--mizuiro-02);
    padding-left: 0;
    padding-top: 14px;
  }

  .tier {
    flex-direction: column;
  }

  .tier-pt {
    width: 100%;
    flex-direction: row;
    gap: 6px;
    padding: 8px 0;
  }

  .tier-body {
    padding: 14px 16px 18px;
  }
}

/* ==========================================================================
   アクセシビリティ
   ========================================================================== */

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--blue-06);
  outline-offset: 2px;
}