/* ========================================
   组件样式 - 按钮、卡片、标签、表单等
   ======================================== */

/* ========== 按钮组件 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-color);
  color: #fff;
}

.btn-primary:hover {
  background-color: var(--primary-dark);
  color: #fff;
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: #fff;
}

.btn-secondary:hover {
  background-color: #1e272e;
  color: #fff;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-outline:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background-color: var(--bg-light);
  color: var(--primary-color);
}

.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 50%;
}

/* ========== 标签组件 ========== */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 500;
  border-radius: 20px;
  background-color: var(--bg-light);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tag:hover {
  background-color: var(--primary-light);
  color: #fff;
}

.tag-primary {
  background-color: var(--primary-color);
  color: #fff;
}

.tag-strategy { background-color: var(--tag-strategy); color: #fff; }
.tag-competitive { background-color: var(--tag-competitive); color: #fff; }
.tag-openworld { background-color: var(--tag-openworld); color: #fff; }
.tag-action { background-color: var(--tag-action); color: #fff; }
.tag-idle { background-color: var(--tag-idle); color: #fff; }
.tag-shooter { background-color: var(--tag-shooter); color: #fff; }
.tag-rpg { background-color: var(--tag-rpg); color: #fff; }

/* ========== 卡片组件 ========== */
.card {
  background-color: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-image {
  position: relative;
  width: 100%;
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.card:hover .card-image img {
  transform: scale(1.05);
}

.card-image .card-tag {
  position: absolute;
  top: var(--spacing-sm);
  left: var(--spacing-sm);
}

.card-body {
  padding: var(--spacing-md);
}

.card-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-title:hover {
  color: var(--primary-color);
}

.card-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-sm);
  font-size: 12px;
  color: var(--text-muted);
}

/* 横向卡片 */
.card-horizontal {
  display: flex;
  flex-direction: row;
}

.card-horizontal .card-image {
  width: 200px;
  flex-shrink: 0;
}

.card-horizontal .card-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

/* ========== 游戏卡片 ========== */
.game-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--bg-white);
  transition: all var(--transition-normal);
}

.game-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.game-card-image {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.game-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.game-card:hover .game-card-image img {
  transform: scale(1.08);
}

.game-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: #fff;
}

.game-card-title {
  font-size: 14px;
  font-weight: 600;
}

/* ========== 输入框组件 ========== */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input {
  width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-white);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.input::placeholder {
  color: var(--text-muted);
}

.input-icon {
  position: absolute;
  right: 12px;
  color: var(--text-muted);
  pointer-events: none;
}

.input-with-icon {
  padding-right: 40px;
}

/* 搜索框 */
.search-box {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.search-box .input {
  padding-right: 50px;
}

.search-box .btn-search {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  padding: 0;
  background-color: var(--primary-color);
  color: #fff;
  border-radius: var(--radius-sm);
}

.search-box .btn-search:hover {
  background-color: var(--primary-dark);
}

/* ========== Tab 组件 ========== */
.tabs {
  display: flex;
  gap: var(--spacing-xs);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

.tab-item {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-item:hover {
  color: var(--primary-color);
}

.tab-item.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

/* ========== 分页组件 ========== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.page-item {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.page-item:hover {
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.page-item.active {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
}

.page-item.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========== 轮播组件 ========== */
.carousel {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.carousel-inner {
  display: flex;
  transition: transform var(--transition-slow);
}

.carousel-item {
  min-width: 100%;
  position: relative;
}

.carousel-item img {
  width: 100%;
  height: auto;
}

.carousel-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-xl) var(--spacing-lg);
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: #fff;
}

.carousel-caption h3 {
  font-size: 24px;
  color: #fff;
  margin-bottom: var(--spacing-sm);
}

.carousel-caption p {
  font-size: 14px;
  opacity: 0.9;
}

.carousel-controls {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: space-between;
  padding: 0 var(--spacing-md);
  pointer-events: none;
}

.carousel-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 20px;
  pointer-events: auto;
  transition: all var(--transition-fast);
}

.carousel-btn:hover {
  background-color: #fff;
  color: var(--primary-color);
}

.carousel-indicators {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
}

.carousel-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-indicator.active {
  background-color: #fff;
  width: 24px;
  border-radius: 4px;
}

/* ========== 空状态 ========== */
.empty-state {
  padding: var(--spacing-xxl);
  text-align: center;
  color: var(--text-muted);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: var(--spacing-md);
}

.empty-state-text {
  font-size: 16px;
}

/* ========== 加载状态 ========== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xxl);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ========== 分割线 ========== */
.divider {
  height: 1px;
  background-color: var(--border-color);
  margin: var(--spacing-lg) 0;
}

.divider-vertical {
  width: 1px;
  height: 100%;
  background-color: var(--border-color);
}

/* ========== 徽标 ========== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 6px;
  font-size: 11px;
  font-weight: 600;
  background-color: var(--error-color);
  color: #fff;
  border-radius: 9px;
}

.badge-dot {
  width: 8px;
  height: 8px;
  min-width: 8px;
  padding: 0;
  border-radius: 50%;
}