/* ============================================================
   深渊幽境（GI Endgame）— 父级 & 子页面专属样式
   依赖全局 ../style.css 的 CSS 变量
   设计风格：深色 + 液态玻璃 + 响应式
   ============================================================ */

/* ----------------------------------------------------------
   0. 页脚覆写：取消固定定位，跟随内容流
   ---------------------------------------------------------- */
.site-footer {
  position: static;
  margin-top: 3rem;
  padding: 1.5rem;
}

/* ----------------------------------------------------------
   1. 主内容容器
   ---------------------------------------------------------- */
.endgame-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: calc(var(--navbar-height) + 1.5rem) 2rem 4rem;
  min-height: 100vh;
  max-width: 100%;
  margin: 0 auto;
}

/* ----------------------------------------------------------
   2. 标签导航
   ---------------------------------------------------------- */
.endgame-tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem;
  padding: 0.4rem;
  margin-bottom: 2rem;
  border-radius: var(--radius-md);
}

.endgame-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--transition-fast),
    background var(--transition-fast);
  user-select: none;
}

.endgame-tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.endgame-tab.active {
  color: var(--accent);
  background: rgba(110, 168, 254, 0.12);
}

.endgame-tab:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

/* ----------------------------------------------------------
   3. 标签面板
   ---------------------------------------------------------- */
.endgame-panels {
  width: 100%;
  max-width: 100%;
}

.endgame-panel {
  display: none;
  width: 100%;
}

.endgame-panel.active {
  display: block;
}

.endgame-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 2rem;
  text-align: center;
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.endgame-placeholder i {
  font-size: 2.5rem;
  color: var(--text-tertiary);
}

/* ----------------------------------------------------------
   4. 挑战卡片网格
   ---------------------------------------------------------- */
.endgame-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  width: 100%;
}

/* 挑战卡片 */
.endgame-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  min-height: 160px;
}

.endgame-card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25),
    var(--glass-inner-shadow);
  transform: translateY(-3px);
}

.endgame-card:active {
  transform: translateY(0);
}

.endgame-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.4;
}

/* 版本标签（置于卡片顶部，醒目） */
.endgame-card-version {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(110, 168, 254, 0.12);
  padding: 0.2rem 0.75rem;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

/* 状态标签（未开始 / 进行中 / 已结束） */
.endgame-card-status {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
}

.endgame-card-status.status-upcoming {
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.12);
}

.endgame-card-status.status-ongoing {
  color: #4ade80;
  background: rgba(74, 222, 128, 0.12);
}

.endgame-card-status.status-ended {
  color: var(--text-tertiary);
  background: rgba(255, 255, 255, 0.06);
}

.endgame-card-date {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

/* ============================================================
   5. 子页面（st067）专属样式
   ============================================================ */

.st067-main {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: calc(var(--navbar-height) + 1.5rem) 2rem 4rem;
  min-height: 100vh;
  max-width: 100%;
  margin: 0 auto;
}

/* 难度切换按钮组 */
.diff-toggle {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.diff-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 1.25rem;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: none;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: color var(--transition-fast),
    background var(--transition-fast),
    border-color var(--transition-fast);
  user-select: none;
}

.diff-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.diff-btn.active {
  color: #ffffff;
  background: rgba(110, 168, 254, 0.15);
}

.diff-btn[data-diff="five"].active {
  border-color: #6ea8fe;
}

.diff-btn[data-diff="six"].active {
  border-color: #ff6b6b;
}

/* 敌人卡片网格 */
.enemy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
}

/* 敌人卡片 */
.enemy-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.25rem;
  text-align: center;
  gap: 0.5rem;
}

.enemy-card-img {
  width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  border-bottom: 1px solid transparent;
}

.enemy-card-name {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* HP + 等级同行（桌面端） */
.enemy-card-info {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.enemy-card-level {
  font-size: 0.72rem;
  font-weight: 600;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
}

.enemy-card-hp {
  font-size: 0.84rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.enemy-mechanism-title {
  display: inline-block;
  font-size: 0.62rem;
  font-weight: 700;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  margin-bottom: 0.4rem;
}

.enemy-card-mechanism {
  font-size: 0.68rem;
  color: #ffffff;
  line-height: 1.7;
  text-align: left;
  width: 100%;
  margin-top: 0.25rem;
  padding: 0.4rem 0.2rem;
  border-top: 1px solid transparent;
}

.enemy-card-mechanism p {
  margin-bottom: 0.75rem;
}

.enemy-card-mechanism p:last-child {
  margin-bottom: 0;
}

/* 加载/错误状态 */
.enemy-loading,
.enemy-error {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem;
  color: var(--text-secondary);
  font-size: 1rem;
}

.enemy-error {
  color: #ff6b6b;
}

/* ============================================================
   6. 子页面返回按钮
   ============================================================ */
.nav-back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.44rem 0.88rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast),
    background var(--transition-fast);
  text-decoration: none;
  user-select: none;
}

.nav-back:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

/* ============================================================
   7. 响应式：平板端 (768px - 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .endgame-main,
  .st067-main {
    padding: calc(var(--navbar-height) + 1rem) 1.25rem 3rem;
  }

  .endgame-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .enemy-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .endgame-card {
    padding: 1.5rem 1.25rem;
    min-height: 140px;
  }

  .endgame-card-title {
    font-size: 1.05rem;
  }
}

/* ============================================================
   8. 响应式：手机端 (< 768px)
   ============================================================ */
@media (max-width: 768px) {
  .endgame-main,
  .st067-main {
    padding: 2rem 0.75rem 3rem;
  }

  .endgame-grid {
    grid-template-columns: 1fr;
  }

  .enemy-grid {
    grid-template-columns: 1fr;
  }

  .endgame-card {
    min-height: 100px;
    padding: 1rem 0.75rem;
    gap: 0.3rem;
  }

  .endgame-card-version {
    font-size: 0.75rem;
    padding: 0.12rem 0.5rem;
  }

  .endgame-card-title {
    font-size: 0.9rem;
  }

  .endgame-card-status {
    font-size: 0.7rem;
  }

  .endgame-card-date {
    font-size: 0.7rem;
  }

  .endgame-tab,
  .endgame-tab {
    font-size: 0.8rem;
    padding: 0.4rem 0.7rem;
  }

  .diff-btn {
    font-size: 0.72rem;
    padding: 0.4rem 0.7rem;
    flex-direction: column;
    gap: 0.05rem;
    line-height: 1.2;
  }

  .diff-btn small {
    display: block;
    font-size: 0.65rem;
    font-weight: 400;
  }

  .enemy-card {
    padding: 0.85rem;
  }

  .enemy-card-img {
    max-height: 220px;
  }

  .enemy-card-name {
    font-size: 0.78rem;
  }

  .enemy-card-level {
    font-size: 0.65rem;
    white-space: nowrap;
  }

  .enemy-card-hp {
    font-size: 0.7rem;
    white-space: nowrap;
  }

  /* 手机端隐藏机制标题 */
  .enemy-mechanism-title {
    display: none;
  }

  .enemy-card-mechanism {
    font-size: 0.62rem;
    padding: 0.3rem 0.1rem;
  }

  /* 手机端等级和血量保持同行 */
  .enemy-card-info {
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 0.4rem;
  }
}

/* ============================================================
   9. 响应式：小屏手机 (< 400px)
   ============================================================ */
@media (max-width: 400px) {
  .endgame-tab {
    font-size: 0.75rem;
    padding: 0.35rem 0.55rem;
  }

  .diff-btn {
    font-size: 0.78rem;
    padding: 0.4rem 0.85rem;
  }
}