/* ============================================
   高级页面组件
   版本: 4.1 - Premium Components
=========================================== */

/* ============================================
   霓虹文字效果
=========================================== */
.neon-text {
  color: white;
  text-shadow:
    0 0 7px white,
    0 0 10px white,
    0 0 21px white,
    0 0 42px var(--primary-500),
    0 0 82px var(--primary-500),
    0 0 92px var(--primary-500),
    0 0 102px var(--primary-500),
    0 0 151px var(--primary-500);
}

/* ============================================
   全息卡片效果
=========================================== */
.holographic {
  position: relative;
  background: linear-gradient(45deg,
    var(--primary-500) 0%,
    var(--accent) 25%,
    var(--warning-500) 50%,
    var(--success-500) 75%,
    var(--primary-500) 100%);
  background-size: 400% 400%;
  animation: holographic-shift 8s ease infinite;
}

@keyframes holographic-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.holographic::before {
  content: '';
  position: absolute;
  inset: 2px;
  background: white;
  border-radius: calc(var(--radius-xl) - 2px);
  z-index: 0;
}

.holographic-content {
  position: relative;
  z-index: 1;
}

/* ============================================
   折叠卡片
=========================================== */
.accordion {
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--border-light);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  width: 100%;
  padding: var(--space-4) var(--space-6);
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: background var(--duration-200) var(--ease-in-out);
}

.accordion-header:hover {
  background: var(--gray-50);
}

.accordion-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  text-align: left;
}

.accordion-icon {
  transition: transform var(--duration-300) var(--ease-in-out);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--duration-300) var(--ease-in-out);
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--text-secondary);
}

/* ============================================
   卡片翻转效果
=========================================== */
.flip-card {
  perspective: 1000px;
  width: 100%;
  height: 300px;
}

.flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform var(--duration-500) var(--ease-in-out);
  transform-style: preserve-3d;
}

.flip-card:hover .flip-card-inner {
  transform: rotateY(180deg);
}

.flip-card-front,
.flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.flip-card-front {
  background: white;
  border: 1px solid var(--border-light);
}

.flip-card-back {
  background: linear-gradient(135deg, var(--primary-600), var(--accent));
  color: white;
  transform: rotateY(180deg);
}

/* ============================================
   悬浮操作按钮
=========================================== */
.fab {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-600), var(--accent));
  color: white;
  border: none;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.4);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-200) var(--ease-in-out);
  z-index: var(--z-fixed);
}

.fab:hover {
  transform: scale(1.1) rotate(90deg);
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.5);
}

.fab:active {
  transform: scale(0.95);
}

.fab-mini {
  width: 40px;
  height: 40px;
}

/* ============================================
   芯片标签组
=========================================== */
.chip-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.chip {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--gray-100);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-150) var(--ease-in-out);
  border: 1px solid transparent;
}

.chip:hover {
  background: var(--gray-200);
}

.chip.active {
  background: var(--primary-100);
  color: var(--primary-700);
  border-color: var(--primary-300);
}

.chip-close {
  width: 18px;
  height: 18px;
  margin-left: var(--space-2);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-150) var(--ease-in-out);
}

.chip-close:hover {
  background: rgba(0, 0, 0, 0.1);
}

/* ============================================
   面包屑导航
=========================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4) 0;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--duration-150) var(--ease-in-out);
}

.breadcrumb-item:hover {
  color: var(--primary-600);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: var(--font-medium);
}

.breadcrumb-separator {
  color: var(--text-tertiary);
}

/* ============================================
   模态框增强
=========================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  animation: fadeIn var(--duration-200) var(--ease-in-out);
}

.modal-container {
  background: white;
  border-radius: var(--radius-2xl);
  max-width: 540px;
  width: 90%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: var(--shadow-2xl);
  animation: scaleIn var(--duration-300) var(--ease-out);
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-primary);
}

.modal-close {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gray-100);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-150) var(--ease-in-out);
}

.modal-close:hover {
  background: var(--gray-200);
}

.modal-body {
  padding: var(--space-6);
}

.modal-footer {
  padding: var(--space-6);
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
}

/* ============================================
   Toast 通知
=========================================== */
.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-tooltip);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  min-width: 300px;
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border-left: 4px solid var(--primary-500);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  animation: slideInRight var(--duration-300) var(--ease-out);
}

.toast.success {
  border-left-color: var(--success-500);
}

.toast.error {
  border-left-color: var(--error-500);
}

.toast.warning {
  border-left-color: var(--warning-500);
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.toast-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

/* ============================================
   下拉菜单
=========================================== */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-light);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--duration-200) var(--ease-in-out);
  z-index: var(--z-dropdown);
}

.dropdown.open .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  text-align: left;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--duration-150) var(--ease-in-out);
}

.dropdown-item:hover {
  background: var(--gray-50);
  color: var(--text-primary);
}

.dropdown-item:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.dropdown-divider {
  height: 1px;
  background: var(--border-light);
  margin: var(--space-2) 0;
}