/* ============================================
   手工设计风格优化 - 消除AI生成感
   ============================================ */

/* ============ 1. 全局装饰性元素 ============ */

/* 手绘风格的装饰线 */
.hand-drawn-line {
  position: relative;
}

.hand-drawn-line::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(21, 101, 192, 0.3) 10%,
    rgba(21, 101, 192, 0.6) 50%,
    rgba(21, 101, 192, 0.3) 90%,
    transparent 100%
  );
  bottom: -8px;
  left: 0;
  border-radius: 50% 50% 50% 50% / 100% 100% 0% 0%;
  transform: scaleX(0.95);
  opacity: 0.7;
}

/* 手绘风格的圆点装饰 */
.hand-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #1565c0;
  border-radius: 50%;
  margin-right: 12px;
  opacity: 0.8;
  animation: dotPulse 2s ease-in-out infinite;
}

@keyframes dotPulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.2);
    opacity: 0.5;
  }
}

/* 不规则的装饰形状 */
.organic-shape {
  position: absolute;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  animation: organicFloat 8s ease-in-out infinite;
}

@keyframes organicFloat {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(10px, -10px) rotate(5deg);
  }
  50% {
    transform: translate(-5px, 15px) rotate(-3deg);
  }
  75% {
    transform: translate(-10px, -5px) rotate(3deg);
  }
}

/* 肌理质感叠加 */
.texture-overlay {
  position: relative;
}

.texture-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
  mix-blend-mode: multiply;
}

/* ============ 2. 非对称布局变量 ============ */

/* 不规则的间距变量 */
:root {
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;

  /* 随机化偏移 */
  --offset-random-1: 6px;
  --offset-random-2: -4px;
  --offset-random-3: 8px;
  --offset-random-4: -6px;

  /* 不规则圆角 */
  --radius-organic-1: 18px 22px 16px 24px;
  --radius-organic-2: 24px 16px 22px 18px;
  --radius-organic-3: 20px 20px 20px 20px;
}

/* ============ 3. 自定义卡片样式 ============ */

/* 手工风格卡片 */
.hand-card {
  background: white;
  border: 1px solid rgba(21, 101, 192, 0.15);
  border-radius: var(--radius-organic-1);
  padding: var(--space-lg) var(--space-lg) var(--space-lg);
  position: relative;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
}

.hand-card::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg,
    rgba(21, 101, 192, 0.1) 0%,
    transparent 30%,
    transparent 70%,
    rgba(66, 165, 245, 0.1) 100%
  );
  border-radius: var(--radius-organic-1);
  z-index: -1;
  opacity: 0;
  transition: opacity 0.4s ease;
}

.hand-card:hover {
  transform: translate(var(--offset-random-1), var(--offset-random-2));
  box-shadow: 6px 12px 24px rgba(21, 101, 192, 0.12);
  border-color: rgba(21, 101, 192, 0.3);
}

.hand-card:hover::before {
  opacity: 1;
}

/* 错落的卡片布局 */
.stagger-grid {
  display: grid;
  gap: 24px;
}

.stagger-grid > *:nth-child(3n+1) {
  transform: translateY(var(--offset-random-1));
}

.stagger-grid > *:nth-child(3n+2) {
  transform: translateY(var(--offset-random-2));
}

.stagger-grid > *:nth-child(3n+3) {
  transform: translateY(var(--offset-random-3));
}

.stagger-grid > *:hover {
  transform: translateY(0);
}

/* ============ 4. 自定义按钮样式 ============ */

/* 手工风格按钮 */
.hand-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 28px;
  background: linear-gradient(135deg, #1565c0 0%, #1976d2 100%);
  color: white;
  font-size: 16px;
  font-weight: 600;
  border: none;
  border-radius: 8px 12px 12px 8px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.hand-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: left 0.6s ease;
}

.hand-btn:hover::before {
  left: 100%;
}

.hand-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 20px rgba(21, 101, 192, 0.35);
}

.hand-btn:active {
  transform: translateY(0) scale(0.98);
}

/* ============ 5. 自定义标题样式 ============ */

/* 手工风格标题 */
.hand-title {
  position: relative;
  font-weight: 700;
  color: #1565c0;
  display: inline-block;
}

.hand-title::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60%;
  height: 3px;
  background: linear-gradient(90deg,
    rgba(21, 101, 192, 0.6),
    rgba(66, 165, 245, 0.3)
  );
  border-radius: 2px;
  transform: skewX(-5deg);
}

/* 标题装饰元素 */
.hand-title-decoration {
  position: absolute;
  top: -10px;
  right: -15px;
  width: 20px;
  height: 20px;
  border: 2px solid rgba(21, 101, 192, 0.3);
  border-radius: 50%;
  animation: spinSlow 10s linear infinite;
}

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

/* ============ 6. 标题偏移优化 ============ */

.section-header {
  text-align: left;
  position: relative;
  margin-bottom: var(--space-2xl);
  padding-left: var(--space-md);
}

.section-header::before {
  content: '';
  position: absolute;
  left: 0;
  top: 5px;
  bottom: 5px;
  width: 4px;
  background: linear-gradient(180deg,
    rgba(21, 101, 192, 0.8) 0%,
    rgba(66, 165, 245, 0.4) 100%
  );
  border-radius: 2px;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  color: #1565c0;
  margin-bottom: 8px;
  line-height: 1.3;
  position: relative;
}

.section-subtitle {
  font-size: 16px;
  color: #616161;
  line-height: 1.6;
  margin-bottom: 0;
  font-weight: 400;
}

/* ============ 7. 分页/导航优化 ============ */

/* 手工风格分页 */
.hand-pagination {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-top: var(--space-xl);
}

.hand-pagination-item {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 1px solid rgba(21, 101, 192, 0.2);
  border-radius: 8px;
  font-weight: 600;
  color: #1565c0;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.hand-pagination-item:hover {
  transform: translateY(-3px);
  background: rgba(21, 101, 192, 0.05);
  border-color: rgba(21, 101, 192, 0.4);
}

.hand-pagination-item.active {
  background: linear-gradient(135deg, #1565c0 0%, #1976d2 100%);
  color: white;
  border-color: transparent;
}

/* ============ 8. 标签优化 ============ */

/* 手工风格标签 */
.hand-tag {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(21, 101, 192, 0.08);
  color: #1565c0;
  font-size: 13px;
  font-weight: 600;
  border-radius: 6px 10px 10px 6px;
  margin-right: 8px;
  margin-bottom: 8px;
  transition: all 0.3s ease;
  border: 1px solid rgba(21, 101, 192, 0.15);
}

.hand-tag:hover {
  background: rgba(21, 101, 192, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(21, 101, 192, 0.15);
}

/* ============ 9. 动画优化 ============ */

/* 随机延迟的淡入动画 */
.fade-in-stagger {
  opacity: 0;
  animation: fadeIn 0.6s cubic-bezier(0.23, 1, 0.32, 1) forwards;
}

.fade-in-stagger:nth-child(1) { animation-delay: 0s; }
.fade-in-stagger:nth-child(2) { animation-delay: 0.08s; }
.fade-in-stagger:nth-child(3) { animation-delay: 0.15s; }
.fade-in-stagger:nth-child(4) { animation-delay: 0.22s; }
.fade-in-stagger:nth-child(5) { animation-delay: 0.28s; }
.fade-in-stagger:nth-child(6) { animation-delay: 0.35s; }

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

/* 悬停时的微妙晃动 */
.hover-wiggle {
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1);
}

.hover-wiggle:hover {
  animation: wiggle 0.5s ease;
}

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25% { transform: rotate(-2deg); }
  75% { transform: rotate(2deg); }
}

/* ============ 10. 装饰性图标 ============ */

/* 手绘风格装饰图标 */
.hand-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(21, 101, 192, 0.08);
  border-radius: 50%;
  border: 1px dashed rgba(21, 101, 192, 0.3);
  color: #1565c0;
  transition: all 0.3s ease;
}

.hand-icon:hover {
  background: rgba(21, 101, 192, 0.15);
  border-color: rgba(21, 101, 192, 0.5);
  transform: rotate(10deg) scale(1.1);
}