/* ===== 色と書体（ARKUNO の証明書ページと同じ） ===== */
:root {
  --bg: #faf9f7;
  --fg: #2c2620;
  --fg-90: rgba(44, 38, 32, 0.90);
  --fg-60: rgba(44, 38, 32, 0.60);
  --fg-40: rgba(44, 38, 32, 0.40);
  --fg-20: rgba(44, 38, 32, 0.20);
  --fg-10: rgba(44, 38, 32, 0.10);

  --display: "Playfair Display", Georgia, "Noto Serif JP", serif;
  --num: "Jost", "Helvetica Neue", sans-serif;
  --body: "Lora", Georgia, "Noto Serif JP", serif;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  display: grid;
  place-items: center;
  padding: 40px 24px;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  line-height: 2;
  letter-spacing: 0.03em;
  overflow-x: hidden;
}

/* ===== 背景: 方眼紙のような点のマス目 ===== */
.grid {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(var(--fg-10) 1px, transparent 1.2px);
  background-size: 22px 22px;
  /* 真ん中ほど見えて、端に向かって消える */
  mask-image: radial-gradient(circle at center, #000 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at center, #000 0%, transparent 75%);
  pointer-events: none;
}

/* ===== 背景: NFCをかざしたときの波紋 ===== */
.signal {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}
.signal span {
  grid-area: 1 / 1;
  width: 40px;
  height: 40px;
  border: 1px solid var(--fg-40);
  border-radius: 50%;
  opacity: 0;
}

/* ===== 本文 ===== */
.page {
  position: relative;
  width: 100%;
  max-width: 420px;
  text-align: center;
}

/* ブランド表記と短い線 */
.brand-name {
  margin: 0;
  font-family: var(--display);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.4em;
  text-indent: 0.4em;
  color: var(--fg-40);
}
.brand-rule {
  width: 40px;
  height: 1px;
  margin: 20px auto 40px;
  background: var(--fg-20);
}

.welcome {
  margin: 0;
  font-family: var(--display);
  font-style: italic;
  font-weight: 300;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--fg-60);
}

.name {
  margin: 0;
  min-height: 1.3em;
  font-family: var(--display);
  font-size: 40px;
  font-weight: 300;
  line-height: 1.3;
  letter-spacing: 0.06em;
  color: var(--fg-90);
}

/* タイピング中のカーソル */
.caret {
  display: inline-block;
  width: 1px;
  height: 0.85em;
  margin-left: 6px;
  vertical-align: -0.05em;
  background: var(--fg-60);
  animation: blink 1.1s steps(1) infinite;
}

/* 名前の下のサインの線 */
.sign {
  width: 56%;
  height: 1px;
  margin: 14px auto 36px;
  background: linear-gradient(90deg, transparent, var(--fg-40) 20%, var(--fg-40) 80%, transparent);
}

.lead {
  margin: 0 0 40px;
  font-size: 15px;
  color: var(--fg-90);
}

.note {
  padding-top: 32px;
  border-top: 1px solid var(--fg-20);
  font-size: 14px;
  color: var(--fg-60);
}
.note p { margin: 0; }
.note p + p { margin-top: 10px; }
.note-label {
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--fg-40);
}
.next {
  font-family: var(--body);
  color: var(--fg-90);
  letter-spacing: 0.08em;
}

button {
  position: relative;
  overflow: hidden;
  margin-top: 40px;
  padding: 14px 40px;
  border: 1px solid var(--fg-20);
  border-radius: 6px;
  background: transparent;
  color: var(--fg-90);
  font-family: var(--body);
  font-size: 13px;
  letter-spacing: 0.2em;
  cursor: pointer;
  transition: border-color 0.4s ease, background 0.4s ease;
}
button:hover { border-color: var(--fg-60); background: rgba(255, 255, 255, 0.6); }
button:focus-visible { outline: 2px solid var(--fg-40); outline-offset: 3px; }

/* ボタンを押したところから広がる波紋 */
.tap-ripple {
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--fg-20);
  transform: translate(-50%, -50%) scale(0);
  animation: tap 0.7s ease-out forwards;
  pointer-events: none;
}

/* ===== 画面の切り替え ===== */
.screen { animation: screen-in 0.6s ease-out both; }
.screen.leaving { animation: screen-out 0.45s ease-in both; }

/* ===== 画面2: TOKI ===== */
.toki-moment {
  margin: 0 0 24px;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--fg-60);
}

.toki-time { min-height: 150px; display: grid; place-items: center; }

.toki-mode {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 12px;
  animation: screen-in 0.5s ease-out both;
}
.toki-mode[hidden] { display: none; }
.toki-mode[data-mode="days"],
.toki-mode[data-mode="breath"] { flex-direction: column; align-items: center; gap: 0; }

.toki-layer { display: flex; flex-direction: column; align-items: center; }

.toki-num {
  font-family: var(--num);
  font-weight: 200;
  font-size: 64px;
  line-height: 1.1;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--fg-90);
}
.toki-num--hero { font-size: clamp(40px, 15vw, 96px); }

.toki-sep {
  font-family: var(--num);
  font-weight: 200;
  font-size: 40px;
  color: var(--fg-20);
}

.toki-unit {
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--fg-40);
}

.toki-since {
  margin: 20px 0 0;
  font-family: var(--display);
  font-style: italic;
  font-size: 13px;
  color: var(--fg-40);
}

.toki-modes {
  display: inline-flex;
  gap: 2px;
  margin-top: 28px;
  padding: 4px;
  border-radius: 999px;
  background: var(--fg-10);
}
.toki-modes button {
  margin: 0;
  padding: 6px 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--fg-60);
  font-size: 12px;
  letter-spacing: 0.18em;
  transition: background 0.4s ease, color 0.4s ease;
}
.toki-modes button:hover { background: rgba(255, 255, 255, 0.5); }
.toki-modes button[aria-pressed="true"] { background: #fff; color: var(--fg-90); }

.toki-brand {
  margin: 32px 0 0;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--fg-40);
}
.toki-brand span {
  font-family: var(--num);
  font-weight: 300;
  letter-spacing: 0.4em;
  color: var(--fg-60);
}

.toki-note {
  margin: 32px 0 0;
  padding-top: 28px;
  border-top: 1px solid var(--fg-20);
  font-size: 13px;
  color: var(--fg-60);
}

/* ===== 開いたときの演出（script.js が body に intro を付けたときだけ動く） ===== */
.intro .grid { animation: grid-in 1.8s ease-out both; }

.intro .signal span { animation: signal 2.4s cubic-bezier(0.2, 0.7, 0.3, 1) forwards; }
.intro .signal span:nth-child(2) { animation-delay: 0.3s; }
.intro .signal span:nth-child(3) { animation-delay: 0.6s; }

.intro .reveal {
  opacity: 0;
  transform: translateY(10px);
}
.intro.ready .reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  transition-delay: calc(0.4s + var(--i) * 0.18s);
}
/* ブランド表記と Welcome は名前より先に出す */
.intro .brand.reveal,
.intro .welcome.reveal {
  animation: fade-up 0.8s ease-out 0.5s both;
  opacity: 1;
  transform: none;
}

.intro .sign { width: 0; }
.intro.ready .sign {
  width: 56%;
  transition: width 1.2s cubic-bezier(0.6, 0, 0.2, 1);
}

@keyframes signal {
  0%   { opacity: 0.5; transform: scale(0.2); }
  100% { opacity: 0;   transform: scale(28); }
}
@keyframes grid-in {
  from { opacity: 0; transform: scale(1.04); }
  to   { opacity: 1; transform: none; }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: none; }
}
@keyframes screen-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}
@keyframes screen-out {
  to { opacity: 0; transform: translateY(-8px); }
}
@keyframes blink {
  50% { opacity: 0; }
}
@keyframes tap {
  to { transform: translate(-50%, -50%) scale(40); opacity: 0; }
}

/* 動きを減らす設定の人には、演出なしで最初から全部見せる */
@media (prefers-reduced-motion: reduce) {
  .intro .grid,
  .intro .signal span,
  .intro .brand.reveal,
  .intro .welcome.reveal { animation: none; }
  .intro .reveal { opacity: 1; transform: none; }
  .intro .sign { width: 56%; }
  .caret { animation: none; }
  .screen, .screen.leaving, .toki-mode { animation: none; }
}