/* ═══════════════════════════════════════
   style.css - 立体オセロ 3D
   ═══════════════════════════════════════ */

/* --- リセット・全体 --- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  min-height: 100vh;
  background: #0a0a1a;
  font-family: 'Segoe UI', sans-serif;
  color: #eee;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
  user-select: none;
}

/* --- ヘッダー --- */
h1 {
  font-size: 1.8rem;
  margin: 12px 0 4px;
  letter-spacing: 3px;
}
.subtitle {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 8px;
}

#header {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 6px;
}
.score-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1.05rem;
}
.sd {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid #555;
}
.sd.b {
  background: #111;
}
.sd.w {
  background: #eee;
}
#info {
  font-size: 1rem;
  margin-bottom: 6px;
  min-height: 1.4em;
  color: #adf;
}

/* --- レイアウト --- */
#main {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  flex-wrap: wrap;
  justify-content: center;
}

/* ═══════════════════════════════════════
   3Dビュー
   ═══════════════════════════════════════ */
#scene-wrap {
  width: min(420px, 85vw);
  height: min(400px, 75vw);
  perspective: 900px;
  cursor: grab;
  position: relative;
  touch-action: none; /* タッチドラッグ時のスクロール防止 */
}
#scene-wrap:active {
  cursor: grabbing;
}

#scene {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.1s ease-out;
}

/* --- 3Dレイヤー --- */
.layer3d {
  position: absolute;
  left: 50%;
  top: 50%;
  transform-style: preserve-3d;
  display: grid;
  gap: 1px;
  padding: 1px;
  border-radius: 4px;
}
.layer3d.active-layer {
  box-shadow: 0 0 12px rgba(100, 200, 255, 0.4);
}

.layer-label {
  position: absolute;
  left: -36px;
  top: 50%;
  transform: translateY(-50%) rotateY(0deg);
  font-size: 0.75rem;
  color: #8cf;
  white-space: nowrap;
}

/* --- 3Dセル --- */
.layer3d .lcell {
  background: rgba(45, 106, 79, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  position: relative;
  cursor: pointer;
  transition: background 0.15s;
}
.layer3d .lcell:hover {
  background: rgba(58, 125, 92, 0.85);
}

.layer3d .lcell .d3 {
  width: 80%;
  height: 80%;
  border-radius: 50%;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.6);
}
.layer3d .lcell .d3.b {
  background: radial-gradient(circle at 35% 35%, #444, #111);
}
.layer3d .lcell .d3.w {
  background: radial-gradient(circle at 35% 35%, #fff, #bbb);
}

.layer3d .lcell.hint::after {
  content: '';
  width: 28%;
  height: 28%;
  border-radius: 50%;
  background: rgba(255, 255, 100, 0.45);
  position: absolute;
}

/* ═══════════════════════════════════════
   右パネル（フラットビュー）
   ═══════════════════════════════════════ */
#panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}
#panel h3 {
  font-size: 0.95rem;
  color: #8cf;
  margin-bottom: 2px;
}

/* --- レイヤータブ --- */
#layer-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.layer-tab {
  padding: 4px 14px;
  font-size: 0.85rem;
  border: 1px solid #444;
  background: #16213e;
  color: #ccc;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s;
}
.layer-tab:hover {
  background: #1a3a5c;
}
.layer-tab.active {
  background: #0f3460;
  border-color: #5dadec;
  color: #fff;
}

/* --- フラットグリッド --- */
#flat-view {
  display: grid;
  gap: 2px;
  background: #111;
  border: 2px solid #333;
  border-radius: 4px;
  padding: 2px;
}

.fcell {
  background: #2d6a4f;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  cursor: pointer;
  position: relative;
}
.fcell:hover {
  background: #3a7d5c;
}

.fcell .fd {
  width: 78%;
  height: 78%;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}
.fcell .fd.b {
  background: radial-gradient(circle at 35% 35%, #444, #111);
}
.fcell .fd.w {
  background: radial-gradient(circle at 35% 35%, #fff, #bbb);
}

.fcell.hint::after {
  content: '';
  width: 26%;
  height: 26%;
  border-radius: 50%;
  background: rgba(255, 255, 100, 0.45);
  position: absolute;
}

.fcell .stack-num {
  position: absolute;
  bottom: 1px;
  right: 2px;
  font-size: 0.55rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ═══════════════════════════════════════
   ボタン共通
   ═══════════════════════════════════════ */
button {
  padding: 8px 20px;
  font-size: 0.9rem;
  border: 1px solid #444;
  border-radius: 5px;
  cursor: pointer;
  background: #16213e;
  color: #eee;
  transition: background 0.2s;
}
button:hover {
  background: #0f3460;
}

.btn-group {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.btn-group button.active {
  background: #0f3460;
  border-color: #5dadec;
}

.btn-group-label {
  font-size: 0.75rem;
  color: #888;
  margin-bottom: 2px;
  text-align: center;
}

#controls {
  margin-top: 10px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

/* ═══════════════════════════════════════
   凡例
   ═══════════════════════════════════════ */
#legend {
  margin-top: 8px;
  font-size: 0.75rem;
  color: #777;
  text-align: center;
  max-width: 620px;
  line-height: 1.5;
}

/* ═══════════════════════════════════════
   ゲーム終了オーバーレイ
   ═══════════════════════════════════════ */
#gameover-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: background 0.6s;
}
#gameover-overlay.show {
  display: flex;
  background: rgba(0, 0, 0, 0.7);
}

#gameover-box {
  text-align: center;
  opacity: 0;
  transform: scale(0.3) rotateY(180deg);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
#gameover-overlay.show #gameover-box {
  opacity: 1;
  transform: scale(1) rotateY(0deg);
}

#go-result {
  font-size: 2.8rem;
  font-weight: bold;
  letter-spacing: 4px;
  text-shadow:
    0 0 30px currentColor,
    0 0 60px currentColor;
  margin-bottom: 12px;
}
#go-result.black-win {
  color: #aaa;
}
#go-result.white-win {
  color: #fff;
}
#go-result.draw {
  color: #f0c040;
}

#go-detail {
  display: flex;
  gap: 40px;
  justify-content: center;
  margin-bottom: 24px;
}
.go-disc-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.go-disc {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}
.go-disc.b {
  background: radial-gradient(circle at 35% 35%, #555, #111);
}
.go-disc.w {
  background: radial-gradient(circle at 35% 35%, #fff, #bbb);
}
.go-disc.winner {
  animation: winner-pulse 1s ease-in-out infinite alternate;
}
.go-count {
  font-size: 2rem;
  font-weight: bold;
}

@keyframes winner-pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  }
  100% {
    transform: scale(1.15);
    box-shadow:
      0 0 30px rgba(100, 200, 255, 0.6),
      0 0 60px rgba(100, 200, 255, 0.3);
  }
}

#go-restart {
  padding: 12px 36px;
  font-size: 1.1rem;
  border: 2px solid #5dadec;
  border-radius: 8px;
  background: #0f3460;
  color: #fff;
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0;
  transform: translateY(20px);
}
#gameover-overlay.show #go-restart {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.6s;
}
#go-restart:hover {
  background: #1a4a7a;
  transform: scale(1.05);
}

/* ═══════════════════════════════════════
   紙吹雪
   ═══════════════════════════════════════ */
.confetti {
  position: fixed;
  width: 10px;
  height: 10px;
  top: -20px;
  z-index: 1001;
  opacity: 0.9;
  animation: confetti-fall linear forwards;
}
@keyframes confetti-fall {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(110vh) rotate(720deg);
    opacity: 0;
  }
}

/* ═══════════════════════════════════════
   トップバー（言語・ナビ）
   ═══════════════════════════════════════ */
.top-bar {
  width: 100%;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 10px;
  padding: 6px 16px 0;
}
.nav-link {
  color: #8cf;
  text-decoration: none;
  font-size: 0.85rem;
  padding: 4px 12px;
  border: 1px solid #335;
  border-radius: 4px;
  transition: all 0.2s;
}
.nav-link:hover {
  background: #1a2a4a;
  border-color: #5dadec;
}
.lang-select {
  padding: 4px 8px;
  font-size: 0.8rem;
  border: 1px solid #555;
  border-radius: 4px;
  background: #222;
  color: #ccc;
  cursor: pointer;
  outline: none;
}
.lang-select:hover {
  background: #333;
}
.lang-select option {
  background: #222;
  color: #ccc;
}

/* ═══════════════════════════════════════
   オンライン対戦UI
   ═══════════════════════════════════════ */
#online-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding: 12px 20px;
  background: rgba(15, 52, 96, 0.3);
  border: 1px solid #335;
  border-radius: 8px;
  max-width: 400px;
}
.online-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
  width: 100%;
}
.online-btn {
  width: 100%;
  padding: 10px 20px !important;
  font-size: 0.9rem !important;
}
.room-join {
  display: flex;
  gap: 6px;
  width: 100%;
}
.room-input {
  flex: 1;
  padding: 8px 12px;
  font-size: 1rem;
  text-align: center;
  text-transform: uppercase;
  border: 1px solid #444;
  border-radius: 5px;
  background: #1a1a2e;
  color: #eee;
  letter-spacing: 3px;
  font-family: monospace;
}
.room-input::placeholder {
  color: #556;
  letter-spacing: 1px;
}

#online-waiting {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.waiting-text {
  color: #8cf;
  font-size: 0.95rem;
  text-align: center;
  line-height: 1.6;
}
.waiting-spinner {
  width: 28px;
  height: 28px;
  border: 3px solid #334;
  border-top: 3px solid #5dadec;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
.cancel-btn {
  padding: 6px 20px !important;
  font-size: 0.8rem !important;
  border-color: #633 !important;
  color: #c88 !important;
}
.cancel-btn:hover {
  background: #3a1a1a !important;
}
.copy-btn {
  padding: 4px 16px !important;
  font-size: 0.8rem !important;
  border-color: #5dadec !important;
}
.copy-url-btn {
  padding: 4px 16px !important;
  font-size: 0.8rem !important;
  border-color: #f0a030 !important;
  color: #f0a030 !important;
  margin-top: 4px;
}
.copy-url-btn:hover {
  background: #3a2a1a !important;
}

/* 設定行レイアウト（サイズ・層数＋スタンプ/広告） */
.settings-row {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 4px;
}
.settings-left {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* オンライン待機中のボタン点滅（オレンジ） */
@keyframes online-pulse {
  0%,
  100% {
    background: #16213e;
    border-color: #444;
  }
  50% {
    background: rgba(240, 160, 48, 0.35);
    border-color: #f0a030;
  }
}
.btn-group button.online-waiting {
  animation: online-pulse 2s ease-in-out infinite;
  color: #f0a030;
}

/* オンライン対戦中のボタン点滅（薄い緑） */
@keyframes online-playing-pulse {
  0%,
  100% {
    background: #16213e;
    border-color: #444;
  }
  50% {
    background: rgba(80, 200, 120, 0.25);
    border-color: #50c878;
  }
}
.btn-group button.online-playing {
  animation: online-playing-pulse 3s ease-in-out infinite;
  color: #50c878;
}

/* スタンプ受信通知（赤白の速い点滅） */
@keyframes stamp-notify {
  0%,
  100% {
    background: #16213e;
    border-color: #444;
    color: #eee;
  }
  50% {
    background: rgba(220, 50, 50, 0.5);
    border-color: #fff;
    color: #fff;
  }
}
.btn-group button.stamp-notify {
  animation: stamp-notify 0.4s ease-in-out 5;
}

/* ═══════════════════════════════════════
   スタンプチャット
   ═══════════════════════════════════════ */
.stamp-chat {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: rgba(15, 52, 96, 0.15);
  border: 1px solid #335;
  border-radius: 8px;
  padding: 8px 12px;
  min-width: 130px;
  min-height: 70px;
}
.stamp-ad {
  font-size: 0.7rem;
  color: #556;
  text-align: center;
  line-height: 1.4;
}
.stamp-display {
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  width: 100%;
  text-align: center;
  position: relative;
}
.stamp-display .stamp-msg {
  animation: stamp-pop 2.5s ease-out forwards;
}
@keyframes stamp-pop {
  0% {
    transform: scale(0.3);
    opacity: 0;
  }
  15% {
    transform: scale(1.3);
    opacity: 1;
  }
  25% {
    transform: scale(1);
  }
  80% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
.stamp-buttons {
  display: flex;
  gap: 4px;
}
.stamp-btn {
  padding: 4px 8px !important;
  font-size: 1.1rem !important;
  border: 1px solid #335 !important;
  background: rgba(20, 30, 50, 0.6) !important;
  border-radius: 6px !important;
  cursor: pointer;
  transition: all 0.15s;
  min-width: 0 !important;
}
.stamp-btn:hover {
  background: rgba(40, 60, 100, 0.6) !important;
  transform: scale(1.15);
}

/* ═══════════════════════════════════════
   ボード点滅（ゲーム終了時）
   ═══════════════════════════════════════ */
.board-flash .layer3d {
  animation: board-glow 0.6s ease-in-out 3;
}
@keyframes board-glow {
  0%,
  100% {
    filter: brightness(1);
  }
  50% {
    filter: brightness(1.5);
  }
}

/* ═══════════════════════════════════════
   モバイル対応
   ═══════════════════════════════════════ */
@media (max-width: 768px) {
  body {
    padding-bottom: 20px;
  }
  h1 {
    font-size: 1.4rem;
    margin: 8px 0 2px;
    letter-spacing: 2px;
  }
  .subtitle {
    font-size: 0.75rem;
    margin-bottom: 4px;
  }

  #main {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  #panel {
    width: 90vw;
    max-width: 400px;
  }
  #panel h3 {
    font-size: 0.85rem;
  }

  .btn-group {
    gap: 4px;
    margin-bottom: 4px;
  }
  button {
    padding: 6px 14px;
    font-size: 0.8rem;
  }

  #info {
    font-size: 0.9rem;
    margin-bottom: 4px;
  }
  .score-item {
    font-size: 0.95rem;
  }

  .layer-tab {
    padding: 3px 10px;
    font-size: 0.8rem;
  }

  #controls {
    margin-top: 6px;
  }
  #legend {
    font-size: 0.65rem;
    max-width: 90vw;
    padding: 0 8px;
  }

  #go-result {
    font-size: 2rem;
  }
  .go-disc {
    width: 44px;
    height: 44px;
  }
  .go-count {
    font-size: 1.5rem;
  }
  #go-detail {
    gap: 24px;
  }
  #go-restart {
    padding: 10px 28px;
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.2rem;
  }
  .btn-group-label {
    font-size: 0.65rem;
  }
  button {
    padding: 5px 10px;
    font-size: 0.75rem;
  }
  .layer-tab {
    padding: 3px 8px;
    font-size: 0.75rem;
  }
}