/* 六六学社 · 响应式断点 + 通用优化 */
/* 平板 (768px+) 和 桌面 (1024px+) 适配 */
/* 底部安全区 + 焦点态 + 空状态 */

/* ===== 全局基础优化 ===== */

/* 底部安全区适配（iPhone全面屏等） */
.bottom-nav {
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
.bottom-action {
  padding-bottom: calc(16px + env(safe-area-inset-bottom, 0px));
}
.container {
  padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px));
}

/* 按钮焦点态（键盘无障碍） */
button:focus-visible,
.btn:focus-visible,
input:focus-visible {
  outline: 2px solid #6C4F9B;
  outline-offset: 2px;
}

/* 按钮点击态优化 */
button:active, .btn:active {
  transform: scale(0.97);
  opacity: 0.9;
}

/* 空状态统一样式 */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: rgba(255,255,255,0.4);
}
.empty-state .empty-icon {
  font-size: 48px;
  margin-bottom: 12px;
  opacity: 0.6;
}
.empty-state .empty-title {
  font-size: 16px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 4px;
}
.empty-state .empty-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* 卡片阴影统一 */
.card {
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

/* 圆角统一基准 */
:root {
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
}

@media (min-width: 768px) {
  .container {
    max-width: 720px !important;
    padding: 24px 20px 60px !important;
  }
  
  .top-nav {
    padding: 14px 20px !important;
  }
  
  .top-nav .title {
    font-size: 18px !important;
  }
  
  .card {
    padding: 18px !important;
    border-radius: 16px !important;
  }
  
  .btn {
    padding: 14px 20px !important;
    font-size: 16px !important;
  }
  
  .bottom-nav {
    max-width: 720px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
  }
  
  .list-item {
    padding: 14px 16px !important;
  }
  
  .entry-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 16px !important;
  }
  
  .entry-card .entry-title {
    font-size: 14px !important;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 900px !important;
    padding: 32px 24px 80px !important;
  }
  
  .top-nav {
    padding: 16px 24px !important;
  }
  
  .top-nav .title {
    font-size: 20px !important;
  }
  
  .card {
    padding: 24px !important;
    border-radius: 20px !important;
  }
  
  .bottom-nav {
    max-width: 900px !important;
  }
  
  .entry-grid {
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 20px !important;
  }
  
  .entry-card {
    border-radius: 16px !important;
  }
  
  .entry-card .entry-title {
    font-size: 15px !important;
    padding: 12px !important;
  }
}