/**
 * Islands Art - 过渡层 CSS
 * 用于兼容老代码中的 Bootstrap 类名
 * 随着重构进度，逐步删除此文件中的内容
 */

/* ========== Tailwind 扩展样式（登录 Tab 切换）========== */
.login-tab-btn {
  color: #6b7280;
}

.login-tab-btn:hover {
  color: #111827;
}

.login-tab-btn.active {
  background-color: white;
  color: #111827;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* ========== Dropdown 菜单显示动画 ========== */
.dropdown-trigger .dropdown-menu {
  pointer-events: none;
}

.dropdown-trigger .dropdown-menu.opacity-100 {
  pointer-events: auto;
}

/* ========== 旋转动画（加载状态）========== */
@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.animate-spin {
  animation: spin 1s linear infinite;
}

/* ========== Bootstrap 按钮兼容 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.25rem;
  border-radius: 0.5rem;
  transition: all 0.2s;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: #2563eb;
  color: white;
}

.btn-primary:hover {
  background-color: #1d4ed8;
}

.btn-secondary {
  background-color: #6b7280;
  color: white;
}

.btn-secondary:hover {
  background-color: #4b5563;
}

.btn-outline {
  border-color: #d1d5db;
  background-color: transparent;
  color: #374151;
}

.btn-outline:hover {
  background-color: #f9fafb;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

/* ========== Bootstrap 卡片兼容 ========== */
.card {
  background-color: white;
  border: 1px solid #e5e7eb;
  border-radius: 0.75rem;
  overflow: hidden;
}

.card-body {
  padding: 1rem;
}

.card-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid #e5e7eb;
  font-weight: 500;
  background-color: #f9fafb;
}

.card-footer {
  padding: 0.75rem 1rem;
  border-top: 1px solid #e5e7eb;
  background-color: #f9fafb;
}

/* ========== Bootstrap 表单兼容 ========== */
.form-control {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  line-height: 1.25rem;
  border: 1px solid #d1d5db;
  border-radius: 0.5rem;
  background-color: white;
  transition: all 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: #2563eb;
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: #374151;
}

.form-group {
  margin-bottom: 1rem;
}

/* ========== Bootstrap 工具类兼容 ========== */
.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.text-muted {
  color: #6b7280;
}

.d-flex {
  display: flex;
}

.d-inline-flex {
  display: inline-flex;
}

.d-block {
  display: block;
}

.d-inline-block {
  display: inline-block;
}

.d-none {
  display: none;
}

.justify-content-center {
  justify-content: center;
}

.justify-content-between {
  justify-content: space-between;
}

.justify-content-around {
  justify-content: space-around;
}

.align-items-center {
  align-items: center;
}

.align-items-start {
  align-items: flex-start;
}

.align-items-end {
  align-items: flex-end;
}

.flex-column {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-2 {
  gap: 0.5rem;
}

.gap-3 {
  gap: 0.75rem;
}

.gap-4 {
  gap: 1rem;
}

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 0.75rem; }
.mt-4 { margin-top: 1rem; }
.mt-5 { margin-top: 1.25rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-5 { margin-bottom: 1.25rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 0.75rem; }
.p-4 { padding: 1rem; }
.p-5 { padding: 1.25rem; }

/* ========== 响应式工具类 ========== */
@media (min-width: 768px) {
  .d-md-none {
    display: none;
  }
  
  .d-md-block {
    display: block;
  }
  
  .d-md-flex {
    display: flex;
  }
}

@media (max-width: 767px) {
  .d-md-none {
    display: block;
  }
}