/* ============================================================
   KAMEN THERAPY — Kawaii Design System
   女性に好まれる可愛らしいデザイン
   ============================================================ */

/* ── CSS カスタムプロパティ（カラーパレット） ── */
:root {
  --bg-1: #fff3f8;
  --bg-2: #fce4ef;
  --ink: #4a2d3c;
  --muted: #7d5e6e;
  --accent: #ff7aaa;
  --accent-strong: #e0508a;
  --accent-soft: #ffdcea;
  --lavender: #dbb8f8;
  --peach: #ffd4bc;
  --teal: #c96f9b;
  --card: rgba(255, 252, 254, 0.92);
  --card-border: rgba(255, 170, 210, 0.3);
  --shadow: 0 12px 36px rgba(200, 88, 140, 0.12);
  --board: #d4849e;
  --board-dark: #a05878;
  --white: #fffcfd;
  --black: #4a2235;
  --radius-sm: 16px;
  --radius-md: 22px;
  --radius-lg: 30px;
}

* {
  box-sizing: border-box;
}

/* ── ベースタイポグラフィ ── */
body {
  margin: 0;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  font-family: "M PLUS Rounded 1c", "Noto Sans JP", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(ellipse at 8% 0%,   rgba(255, 160, 200, 0.28) 0%, transparent 42%),
    radial-gradient(ellipse at 88% 8%,  rgba(220, 160, 255, 0.18) 0%, transparent 36%),
    radial-gradient(ellipse at 18% 85%, rgba(255, 190, 220, 0.22) 0%, transparent 48%),
    radial-gradient(ellipse at 92% 72%, rgba(255, 160, 190, 0.18) 0%, transparent 40%),
    linear-gradient(160deg, var(--bg-1) 0%, #fdf0f8 52%, var(--bg-2) 100%);
  overflow-x: hidden;
}

h1 {
  margin: 0 0 14px;
  font-family: "M PLUS Rounded 1c", serif;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, var(--ink) 0%, #8c3568 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

p {
  margin: 0;
  color: var(--muted);
  line-height: 1.72;
}

/* ── レイアウト ── */
.wrap {
  position: relative;
  z-index: 1;
  width: min(100%, 1120px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 40px 20px 72px;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

/* ── ヒーローセクション ── */
.hero {
  grid-column: 1 / -1;
  padding: 28px 32px;
  border-radius: var(--radius-lg);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  border: 1px solid var(--card-border);
  position: relative;
  overflow: hidden;
}

/* 右上の装飾グロー */
.hero::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 170, 210, 0.45), transparent 68%);
  pointer-events: none;
}

/* 右下の桜マーク装飾 */
.hero::after {
  content: "✿ ✿";
  position: absolute;
  bottom: 14px;
  right: 22px;
  font-size: 1.4rem;
  color: rgba(255, 140, 190, 0.28);
  pointer-events: none;
  letter-spacing: 0.4em;
  line-height: 1;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--teal);
  margin-bottom: 10px;
}

.hero__eyebrow::before {
  content: "✦";
  font-size: 0.6rem;
  color: var(--accent);
}

/* ── パネル共通 ── */
.panel {
  padding: 24px;
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  border: 1px solid var(--card-border);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.panel--wide {
  grid-column: 1 / -1;
}

/* パネルヘッダー（♡アイコン付き） */
.panel__header {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid rgba(255, 170, 210, 0.25);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.panel__header::before {
  content: "♡";
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── テキストユーティリティ ── */
.status {
  font-size: 1.1rem;
  font-weight: 700;
}

.meta {
  margin-top: 8px;
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.68;
}

/* ── ボタン行 ── */
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

/* ── ボタン ── */
.btn {
  border: none;
  border-radius: 999px;
  padding: 10px 22px;
  font-weight: 700;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
  letter-spacing: 0.02em;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.02);
  filter: brightness(1.06);
  box-shadow: 0 10px 24px rgba(200, 90, 140, 0.22);
}

.btn:active:not(:disabled) {
  transform: translateY(0) scale(0.98);
}

.btn--apple {
  background: linear-gradient(135deg, #7a4060, #4a2235);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(122, 64, 96, 0.28);
}

.btn--google {
  background: linear-gradient(135deg, #fff8fb, #ffeef6);
  color: #6a3850;
  box-shadow: 0 4px 14px rgba(200, 120, 160, 0.14);
  border: 1px solid rgba(200, 140, 170, 0.24);
}

.btn--ghost {
  background: rgba(255, 200, 225, 0.2);
  color: var(--ink);
  border: 1px solid rgba(255, 160, 200, 0.28);
}

.btn--accent {
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #fff5f9;
  box-shadow: 0 8px 22px rgba(224, 80, 138, 0.26);
}

/* ── オセロボード ── */
.board-wrap {
  position: relative;
  margin-top: 10px;
}

.board {
  --cell-size: min(9vw, 56px);
  display: grid;
  grid-template-columns: repeat(8, var(--cell-size));
  grid-template-rows: repeat(8, var(--cell-size));
  gap: 4px;
  padding: 14px;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--board), var(--board-dark));
  box-shadow:
    inset 0 0 24px rgba(103, 50, 74, 0.2),
    0 12px 30px rgba(160, 88, 120, 0.22);
}

.cell {
  position: relative;
  border: none;
  border-radius: 12px;
  background: rgba(130, 70, 100, 0.28);
  cursor: pointer;
  transition: transform 0.15s ease, background 0.2s ease;
}

.cell:disabled {
  cursor: not-allowed;
  opacity: 0.85;
}

.cell:hover:not(:disabled) {
  transform: translateY(-2px) scale(1.05);
  background: rgba(255, 216, 232, 0.28);
}

.cell::before {
  content: "";
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  background: transparent;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.3);
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.cell--black::before {
  background: radial-gradient(circle at 30% 30%, #394150, var(--black));
  opacity: 1;
  transform: scale(1);
}

.cell--white::before {
  background: radial-gradient(circle at 30% 30%, #ffffff, var(--white));
  opacity: 1;
  transform: scale(1);
}

.cell--hint::after {
  content: "";
  position: absolute;
  inset: 35%;
  border-radius: 50%;
  background: rgba(255, 214, 232, 0.88);
}

/* ── オーバーレイ ── */
.overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
  border-radius: 20px;
  background: rgba(110, 60, 86, 0.62);
  backdrop-filter: blur(4px);
  color: #fff9fb;
  font-weight: 700;
  letter-spacing: 0.04em;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.overlay.is-visible {
  opacity: 1;
  pointer-events: auto;
}

/* ── ゲーム情報 ── */
.game-info {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

/* ── ピルバッジ ── */
.pill {
  padding: 7px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(255, 250, 252, 0.94), rgba(255, 226, 240, 0.88));
  font-weight: 700;
  border: 1px solid rgba(255, 176, 210, 0.28);
  font-size: 0.9rem;
}

/* ── ログ表示エリア ── */
.log {
  min-height: 140px;
  max-height: 220px;
  overflow-y: auto;
  font-family: inherit;
  font-size: 0.85rem;
  color: var(--muted);
  background: rgba(255, 240, 248, 0.65);
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 176, 210, 0.2);
}

.log div + div {
  margin-top: 8px;
}

/* ── 装飾オーブ（背景グロー） ── */
.orb {
  position: fixed;
  border-radius: 50%;
  opacity: 0.6;
  z-index: 0;
  animation: float 14s ease-in-out infinite;
  pointer-events: none;
  filter: blur(2px);
}

.orb--one {
  width: 260px;
  height: 260px;
  top: -80px;
  right: 8%;
  background: radial-gradient(circle at 35% 35%, rgba(255, 152, 200, 0.7), transparent 65%);
}

.orb--two {
  width: 320px;
  height: 320px;
  bottom: -140px;
  left: 4%;
  background: radial-gradient(circle at 40% 35%, rgba(218, 170, 255, 0.52), transparent 65%);
  animation-delay: 2.5s;
}

.orb--three {
  width: 200px;
  height: 200px;
  top: 45%;
  left: -70px;
  background: radial-gradient(circle at 40% 40%, rgba(255, 200, 220, 0.8), transparent 68%);
  animation-delay: 5s;
}

/* ── 花びら落下アニメーション ── */
.petal {
  position: fixed;
  width: var(--w, 12px);
  height: var(--w, 12px);
  left: var(--x, 20%);
  border-radius: 50% 0 50% 0;
  background: radial-gradient(circle at 30% 30%, #ffdaea, #ffaac8);
  opacity: 0;
  z-index: 0;
  pointer-events: none;
  animation: petal-fall var(--dur, 10s) ease-in var(--delay, 0s) infinite;
}

@keyframes petal-fall {
  0% {
    opacity: 0;
    top: -24px;
    transform: rotate(0deg) translateX(0px);
  }
  8% { opacity: 0.75; }
  85% { opacity: 0.45; }
  100% {
    opacity: 0;
    top: 100vh;
    transform: rotate(390deg) translateX(45px);
  }
}

/* ── フェードインアニメーション ── */
[data-animate] {
  opacity: 0;
  transform: translateY(16px);
  animation: fadeUp 0.85s ease forwards;
  animation-delay: var(--delay, 0s);
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── 浮遊アニメーション（オーブ用） ── */
@keyframes float {
  0%, 100% { transform: translateY(0px) scale(1); }
  50% { transform: translateY(18px) scale(1.04); }
}

/* ── レスポンシブ ── */
@media (max-width: 720px) {
  .wrap {
    grid-template-columns: 1fr;
    padding: 24px 16px 56px;
  }
  .hero {
    padding: 22px 20px;
    border-radius: 24px;
  }
  .panel {
    border-radius: 20px;
    padding: 18px;
  }
  .board {
    --cell-size: min(10.5vw, 48px);
  }
}