/* 菜单额外样式 */

/* 菜单按钮悬停动画 */
.menu-btn {
  position: relative;
  overflow: hidden;
}

.menu-content {
  width: min(430px, 88vw);
  margin-left: clamp(28vw, 48vw, 720px);
  margin-right: 3vw;
  text-align: left;
}

.menu-content::before {
  content: '恋爱视觉小说  ·  EPISODE 01';
  display: block;
  margin-bottom: 0.9rem;
  color: rgba(116,217,173,0.9);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.game-title {
  color: #f4f0e8;
  font-size: clamp(2.4rem, 4.5vw, 4.2rem);
  letter-spacing: 0.16em;
  text-shadow: 0 4px 24px rgba(0,0,0,0.42);
}

.game-subtitle {
  color: rgba(244,240,232,0.72);
  margin-bottom: 2.2rem;
}

.menu-buttons {
  align-items: flex-start;
  gap: 0.35rem;
}

.menu-buttons .menu-btn:nth-child(-n+2) {
  font-size: 1.2rem;
  min-width: 285px;
  padding: 14px 20px;
  background: rgba(8, 10, 14, 0.58);
  border-left: 2px solid rgba(255,255,255,0.8);
}

.menu-btn {
  min-width: 230px;
  padding: 12px 18px;
  border: 0;
  border-left: 2px solid rgba(116,217,173,0.82);
  border-radius: 0;
  background: rgba(7,12,19,0.34);
  color: rgba(255,255,255,0.9);
  box-shadow: none;
  text-align: left;
}

.menu-btn::after {
  content: '›';
  display: inline-block;
  width: 0;
  margin-left: 0;
  opacity: 0;
  color: #74d9ad;
  transition: width 0.2s, margin-left 0.2s, opacity 0.2s;
}

.menu-btn:hover {
  transform: translateX(7px);
  background: rgba(116,217,173,0.18);
  box-shadow: none;
}

.menu-btn:hover::after,
.menu-btn:focus-visible::after {
  width: 1em;
  margin-left: 0.45rem;
  opacity: 1;
}

.menu-btn:focus-visible {
  outline: 1px solid rgba(116,217,173,0.9);
  outline-offset: 4px;
}

.menu-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255,255,255,0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.menu-btn:hover::before {
  width: 300px;
  height: 300px;
}

/* 粒子背景（主菜单） */
.menu-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(255,107,157,0.08) 1px, transparent 1px),
    radial-gradient(circle at 30% 60%, rgba(255,179,209,0.06) 1px, transparent 1px),
    radial-gradient(circle at 50% 10%, rgba(255,255,255,0.04) 1px, transparent 1px),
    radial-gradient(circle at 70% 40%, rgba(255,107,157,0.05) 1px, transparent 1px),
    radial-gradient(circle at 90% 80%, rgba(255,179,209,0.07) 1px, transparent 1px);
  background-size: 200px 200px;
  animation: float 60s linear infinite;
}

@keyframes float {
  from { transform: translateY(0); }
  to { transform: translateY(-200px); }
}

/* 版本号 */
.menu-content::after {
  content: 'v1.0';
  display: block;
  margin-top: 3rem;
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .menu-content {
    width: min(330px, calc(100vw - 40px));
    margin: 0 18px;
  }

  .menu-content::before { font-size: 0.66rem; }
  .game-subtitle { margin-bottom: 1.7rem; }
  .menu-btn { min-width: 210px; }
}