/* たましいつなぎ */

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(ellipse at top, #1a0a3e 0%, #0d0221 60%, #000 100%);
  color: var(--sg-text-light);
  font-family: var(--sg-font-body);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#game-wrapper {
  position: relative;
  width: 400px;
  height: 680px;
  background: linear-gradient(180deg, rgba(26, 10, 62, 0.8) 0%, rgba(13, 2, 33, 0.8) 100%);
  border-radius: 16px;
  overflow: hidden;
}

.screen {
  position: absolute;
  inset: 0;
  padding: 60px 20px 20px;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}
.screen.active {
  display: flex;
}

/* ===== タイトル画面 ===== */
#title-screen {
  padding-top: 70px;
  justify-content: center;
}
.title-icon {
  font-size: 4.5rem;
  animation: floatY 3s ease-in-out infinite;
}
@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.title-main {
  font-family: var(--sg-font-heading);
  font-size: 2.2rem;
  color: #fff;
  margin: 12px 0 6px;
  text-shadow: 0 0 16px rgba(255, 110, 199, 0.6);
}
.title-sub {
  font-size: 0.9rem;
  color: var(--sg-text-muted);
  margin-bottom: 24px;
}
.title-rules {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 14px 20px;
  margin-bottom: 24px;
  text-align: left;
}
.title-rules p {
  font-size: 0.85rem;
  line-height: 1.8;
  color: #e0d8ff;
}
.title-rules p::before {
  content: '👻 ';
}

/* ===== ボタン ===== */
.btn-primary {
  padding: 12px 32px;
  font-size: 1.1rem;
  font-weight: 700;
  font-family: var(--sg-font-heading);
  color: #1a0a3e;
  background: linear-gradient(135deg, #ffd43b, #ff922b);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(255, 146, 43, 0.4);
  transition: transform 0.15s;
}
.btn-primary:hover {
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-ctrl {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.15s;
}
.btn-ctrl:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ===== プレイ画面 ===== */
#play-screen {
  padding-top: 60px;
  gap: 12px;
}
.hud {
  display: flex;
  justify-content: space-between;
  width: 100%;
  max-width: 360px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 12px;
}
.hud-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.hud-label {
  font-size: 0.65rem;
  color: var(--sg-text-muted);
  letter-spacing: 0.08em;
}
.hud-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  font-family: var(--sg-font-heading);
}

/* ===== グリッド ===== */
#grid-wrap {
  width: 360px;
  max-width: 100%;
  aspect-ratio: 1 / 1;
  padding: 8px;
  background: rgba(0, 0, 0, 0.35);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  touch-action: none;
}
#grid {
  width: 100%;
  height: 100%;
  display: grid;
  gap: 2px;
  position: relative;
}
.cell {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  line-height: 1;
  user-select: none;
  -webkit-user-select: none;
  transition: background 0.1s;
}
.cell.path {
  background: var(--path-color, rgba(255, 255, 255, 0.15));
}
.cell.endpoint {
  background: var(--path-color, rgba(255, 255, 255, 0.1));
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.25);
}
.soul {
  font-size: calc(1.4rem * var(--soul-scale, 1));
  line-height: 1;
  pointer-events: none;
}
.cell.endpoint .soul {
  filter: drop-shadow(0 0 6px rgba(255, 255, 255, 0.6));
  transform: scale(calc(1.2 * var(--soul-scale, 1) + (1 - var(--soul-scale, 1)) * 0.4));
}
.cell.endpoint.connected .soul {
  animation: soulGlow 1.2s ease-in-out infinite alternate;
}
@keyframes soulGlow {
  from { filter: drop-shadow(0 0 4px rgba(255, 255, 255, 0.4)); }
  to { filter: drop-shadow(0 0 12px rgba(255, 255, 255, 1)); }
}
.cell.active-head {
  box-shadow: inset 0 0 0 3px rgba(255, 255, 255, 0.9);
}

/* ===== コントロール ===== */
.controls {
  display: flex;
  gap: 12px;
  margin-top: 6px;
}

/* ===== クリア画面 ===== */
#clear-screen, #ending-screen {
  justify-content: center;
  gap: 12px;
}
.clear-icon {
  font-size: 4rem;
  animation: popIn 0.5s ease-out;
}
@keyframes popIn {
  0% { transform: scale(0) rotate(-20deg); }
  60% { transform: scale(1.2) rotate(5deg); }
  100% { transform: scale(1) rotate(0); }
}
.clear-title {
  font-family: var(--sg-font-heading);
  font-size: 2rem;
  color: #fff;
  text-shadow: 0 0 16px rgba(255, 212, 59, 0.6);
}
.clear-badge {
  font-size: 1.1rem;
  padding: 6px 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, #ffd43b, #ff922b);
  color: #1a0a3e;
  font-weight: 700;
}
.clear-badge.perfect {
  background: linear-gradient(135deg, #ff6ec7, #00fff7);
  animation: badgeShine 1.2s ease-in-out infinite alternate;
}
@keyframes badgeShine {
  from { box-shadow: 0 0 8px rgba(255, 110, 199, 0.5); }
  to { box-shadow: 0 0 20px rgba(0, 255, 247, 0.8); }
}
.clear-message {
  font-size: 0.95rem;
  color: var(--sg-text-muted);
  text-align: center;
  max-width: 280px;
  line-height: 1.6;
}
.clear-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

/* ===== 戻るリンク ===== */
.back-to-top-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 5000;
  padding: 6px 14px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.8);
  background: rgba(0, 0, 0, 0.3);
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 6px;
  text-decoration: none;
  backdrop-filter: blur(4px);
}
.back-to-top-link:hover {
  background: rgba(0, 0, 0, 0.5);
}