/**
 * 基础样式
 * Base Styles for Index Module
 */

/* ========== 重置样式 ========== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

/* ========== 链接 ========== */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* ========== 按钮基础 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: var(--border-radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
  will-change: transform, box-shadow, background-color, border-color;
  transform: translateZ(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  color: var(--text-inverse);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-color: transparent;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
  color: var(--text-inverse);
}

.btn-secondary {
  color: var(--text-primary);
  background: var(--bg-secondary);
  border-color: var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-tertiary);
}

/* ========== 表单基础 ========== */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-md);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-md);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  will-change: border-color, box-shadow;
  transform: translateZ(0);
}

.form-control:focus {
  outline: none;
  border-color: var(--border-color-focus);
  box-shadow: 0 0 0 4px rgba(var(--color-primary-rgb), 0.1);
}

.form-control::placeholder {
  color: var(--text-tertiary);
}

/* ========== 顶部导航 - 现代简洁风格 ========== */
.top-bar {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color-light);
  font-size: var(--font-size-xs);
  padding: var(--space-sm) 0;
}

.top-bar-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: nowrap;
}

.top-bar-left {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  flex: 1;
  white-space: nowrap;
}

.top-bar-link {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: var(--font-weight-medium);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-md);
  white-space: nowrap;
  will-change: color, background-color, transform, box-shadow;
  transform: translateZ(0);
}

.top-bar-link:hover {
  color: var(--color-primary);
  background: rgba(255, 107, 107, 0.08);
}

.top-bar-link.primary {
  background: var(--gradient-orange);
  color: var(--text-inverse);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-semibold);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  white-space: nowrap;
}

.top-bar-link.primary .user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  margin: 0;
}

.top-bar-link.primary .user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.top-bar-link.primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
  color: var(--text-inverse);
}

.top-bar-right {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex: 2;
  justify-content: flex-end;
  white-space: nowrap;
}

.top-bar-divider {
  width: 1px;
  height: 14px;
  background: var(--border-color);
  margin: 0 var(--space-xs);
}

.top-bar-link.highlight {
  background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, rgba(255, 142, 83, 0.1) 100%);
  color: var(--color-primary);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--border-radius-full);
  font-weight: var(--font-weight-semibold);
  border: 1px solid rgba(255, 107, 107, 0.2);
  white-space: nowrap;
}

.top-bar-link.highlight:hover {
  background: var(--gradient-orange);
  color: var(--text-inverse);
  border-color: transparent;
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
}

/* ========== 主导航 - 现代扁平化 ========== */
.main-header {
  background: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background-color: rgba(255, 255, 255, 0.95);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  text-decoration: none;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gradient-orange);
  border-radius: var(--border-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
  font-size: var(--font-size-lg);
  box-shadow: var(--shadow-primary);
}

.logo-text-wrapper {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.logo-text {
  font-size: 22px;
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.5px;
}

.logo-slogan {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  font-weight: var(--font-weight-medium);
  letter-spacing: 0.5px;
}

/* 搜索框 - 现代药丸形状 */
.header-search {
  flex: 1;
  max-width: 520px;
}

.search-wrapper {
  display: flex;
  background: var(--bg-secondary);
  border: 2px solid transparent;
  border-radius: var(--border-radius-full);
  overflow: visible;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  will-change: background-color, border-color, box-shadow;
  transform: translateZ(0);
}

.search-wrapper:focus-within {
  background: var(--bg-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(255, 107, 107, 0.1);
}

/* 自定义下拉选择 */
.custom-select {
  position: relative;
  display: flex;
  align-items: center;
}

.custom-select-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  user-select: none;
  transition: all 0.2s;
}

.custom-select-trigger:hover {
  color: #ff5252;
}

.custom-select-trigger i {
  font-size: 10px;
  transition: transform 0.2s;
}

.custom-select.active .custom-select-trigger i {
  transform: rotate(180deg);
}

.custom-select-options {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  min-width: 120px;
  background: #ffffff;
  border: none;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 2px 8px rgba(0, 0, 0, 0.08);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 9999;
}

/* 添加小三角箭头 */
.custom-select-options::before {
  content: '';
  position: absolute;
  top: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-bottom: 6px solid #ffffff;
  filter: drop-shadow(0 -2px 2px rgba(0, 0, 0, 0.05));
}

.custom-select.active .custom-select-options {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.custom-select-option {
  padding: 10px 20px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s ease;
  text-align: center;
  margin-bottom: 4px;
}

.custom-select-option:last-child {
  margin-bottom: 0;
}

.custom-select-option:hover {
  background: #fff5f5;
  color: var(--color-primary);
}

.custom-select-option.active {
  background: linear-gradient(135deg, #ff6b6b 0%, #ff8e8e 100%);
  color: #ffffff;
  font-weight: var(--font-weight-semibold);
  box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
}

.search-input {
  flex: 1;
  padding: var(--space-md) var(--space-lg);
  border: none;
  font-size: var(--font-size-md);
  outline: none;
  background: transparent;
}

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

.search-btn {
  padding: var(--space-md) var(--space-xl);
  background: var(--gradient-orange);
  color: var(--text-inverse);
  border: none;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: 0 var(--border-radius-full) var(--border-radius-full) 0;
  white-space: nowrap;
}

.search-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
  color: var(--text-inverse);
}

/* 头部操作 - 更简洁 */
.header-actions {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
}

.header-action {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-md);
  white-space: nowrap;
  will-change: color, background-color;
  transform: translateZ(0);
}

.header-action:hover {
  color: var(--color-primary);
  background: rgba(255, 107, 107, 0.08);
}

.header-action i {
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

/* 用户信息项 */
.header-action.user-info {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  white-space: nowrap;
}

.header-action.user-info .user-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  margin: 0;
}

.header-action.user-info .user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========== 分类导航 - 现代极简 ========== */
.category-nav {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color-light);
}

.category-nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.all-categories {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-lg);
  background: var(--gradient-orange);
  color: var(--text-inverse);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
}

.all-categories:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-primary);
  color: var(--text-inverse);
}

.nav-menu {
  display: flex;
  gap: var(--space-md);
  flex: 1;
}

.nav-item {
  padding: var(--space-md) var(--space-lg);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  border-radius: var(--border-radius-md);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  will-change: color, background-color;
  transform: translateZ(0);
}

.nav-item:hover {
  color: var(--color-primary);
  background: rgba(255, 107, 107, 0.06);
}

.nav-item.active {
  color: var(--color-primary);
  background: rgba(255, 107, 107, 0.1);
  font-weight: var(--font-weight-semibold);
}

.nav-divider {
  width: 1px;
  height: 20px;
  background: var(--border-color);
  margin: 0 var(--space-sm);
}

.nav-item.highlight {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
  margin-left: var(--space-xs);
}

.nav-item.highlight:hover {
  background: var(--gradient-orange);
  color: var(--text-inverse);
  border-color: transparent;
}

/* ========== 底部 - 现代深色风格 ========== */
.main-footer {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--space-3xl) 0 0;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-inverse);
}

.footer-brand h3 i {
  background: var(--gradient-orange);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-brand p {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
  will-change: color;
  transform: translateZ(0);
}

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

.footer-contact-item i {
  width: 20px;
  text-align: center;
  color: var(--color-primary);
}

.footer-column h4 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-lg);
  color: var(--text-inverse);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-link {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  will-change: color, padding-left;
  transform: translateZ(0);
}

.footer-link:hover {
  color: var(--color-primary);
  padding-left: var(--space-xs);
}

.footer-bottom {
  padding: var(--space-lg) 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-copyright {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.4);
}

.footer-certificates {
  display: flex;
  gap: var(--space-xl);
}

.footer-certificate {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.5);
}

.footer-certificate i {
  color: var(--color-success);
}

/* ========== 工具类 ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-flex { display: flex; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }
.d-none { display: none; }

.flex-column { flex-direction: column; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.m-0 { margin: 0; }
.mt-auto { margin-top: auto; }
.mb-auto { margin-bottom: auto; }

.p-0 { padding: 0; }

/* ========== 动画 ========== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-fadeIn {
  animation: fadeIn var(--transition-base);
  will-change: opacity;
  transform: translateZ(0);
}

.animate-fadeInUp {
  animation: fadeInUp var(--transition-base);
  will-change: opacity, transform;
  transform: translateZ(0);
}

.animate-shake {
  animation: shake 0.5s ease;
  will-change: transform;
  transform: translateZ(0);
}

.animate-spin {
  animation: spin 1s linear infinite;
  will-change: transform;
  transform: translateZ(0);
}

/* ========== 隐藏 ========== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
  .header-container {
    flex-wrap: wrap;
    gap: var(--space-md);
  }
  
  .header-search {
    order: 3;
    flex-basis: 100%;
    max-width: none;
  }
  
  .category-nav-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .all-categories {
    display: none;
  }
  
  .nav-menu {
    flex-wrap: nowrap;
    padding: var(--space-sm) 0;
  }
  
  .nav-item {
    white-space: nowrap;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}