/* =========================================
   協作項目子頁面樣式 (/contact/collab/) - 增強版
   ========================================= */

/* 頁面容器 */
.contact-collab .sub-hero {
  padding: 3rem 0 2.5rem;
  background: var(--bg-card);
  border-bottom: 2px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.contact-collab .sub-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 200px;
  background: var(--primary-light);
  border-radius: 50%;
  opacity: 0.1;
  transform: translate(30%, -30%);
  z-index: 0;
}

.contact-collab .contact-wrap {
  position: relative;
  z-index: 1;
}

/* 麵包屑導航 - 增強效果 */
.contact-collab .sub-breadcrumb {
  font-size: 0.9rem;
  color: var(--text-light);
  display: flex;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  background: var(--bg-alt);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
  width: fit-content;
}

.contact-collab .sub-breadcrumb a {
  color: var(--primary-dark);
  text-decoration: none;
  font-weight: 600;
  padding: 0.25rem 0;
  position: relative;
  transition: all var(--transition);
}

.contact-collab .sub-breadcrumb a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}

.contact-collab .sub-breadcrumb a:hover {
  color: var(--primary-dark);
}

.contact-collab .sub-breadcrumb a:hover::after {
  width: 100%;
}

.contact-collab .sub-breadcrumb span[aria-hidden="true"] {
  color: var(--border-dark);
  font-weight: bold;
}

/* 頁面標題 - 增強效果 */
.contact-collab .sub-title {
  margin: 0 0 0.75rem;
  font-size: clamp(2.25rem, 4.5vw, 3rem);
  line-height: 1.1;
  color: var(--text-dark);
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
  display: inline-block;
}

.contact-collab .sub-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 80px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}

.contact-collab .sub-lead {
  margin: 1.5rem 0 0;
  color: var(--text);
  line-height: 1.7;
  font-size: clamp(1.05rem, 2vw, 1.2rem);
  max-width: 700px;
  font-weight: 500;
  padding: 1rem 0 0 1.5rem;
  border-left: 3px solid var(--border);
}

/* 頁面操作按鈕 - 增強效果 */
.contact-collab .sub-actions {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-light);
}

/* 主要內容區 - 添加背景紋理 */
.contact-collab .sub-section {
  padding: 2.5rem 0 4rem;
  background: 
    linear-gradient(135deg, 
      var(--bg) 0%, 
      var(--bg) 50%, 
      var(--bg-alt) 50%, 
      var(--bg-alt) 100%);
  background-size: 400% 400%;
  animation: subtleBackground 20s ease infinite;
}

@keyframes subtleBackground {
  0% { background-position: 0% 0% }
  50% { background-position: 100% 100% }
  100% { background-position: 0% 0% }
}

/* 區塊標題 - 卡片式設計 */
.contact-collab .h2 {
  margin: 2.5rem 0 1.5rem;
  font-size: 1.6rem;
  color: var(--text-dark);
  font-weight: 800;
  position: relative;
  padding: 1rem 0 1rem 1.5rem;
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-collab .h2::before {
  content: '';
  width: 8px;
  height: 24px;
  background: var(--primary);
  border-radius: 4px;
  flex-shrink: 0;
  display: block;
}

/* 核心定位面板 - 增強效果 */
.contact-collab .panel {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.contact-collab .panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: var(--primary);
}

.contact-collab .panel strong {
  color: var(--text-dark);
  font-weight: 700;
  background: linear-gradient(transparent 60%, var(--primary-light) 60%);
  padding: 0 0.25rem;
}

/* 服務範圍卡片 - 網格增強 */
.contact-collab .cards-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* 迷你卡片 - 增強效果 */
.contact-collab .mini {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-slow);
  height: 100%;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contact-collab .mini::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.contact-collab .mini:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.contact-collab .mini:hover::before {
  transform: scaleX(1);
}

.contact-collab .mini h3 {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  color: var(--text-dark);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.contact-collab .mini h3::before {
  content: '▸';
  color: var(--primary);
  font-size: 1.2em;
}

.contact-collab .mini ul {
  margin: 0;
  padding-left: 0;
}

.contact-collab .mini li {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.6;
  color: var(--text);
}

.contact-collab .mini li::before {
  content: '—';
  color: var(--primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

/* 協作原則 - 增強效果 */
.contact-collab .rules {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  line-height: 1.8;
  color: var(--text);
  margin-bottom: 2.5rem;
  counter-reset: rule-counter;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.contact-collab .rules::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(45deg, transparent 48%, var(--border-light) 48%, var(--border-light) 52%, transparent 52%),
    linear-gradient(-45deg, transparent 48%, var(--border-light) 48%, var(--border-light) 52%, transparent 52%);
  background-size: 20px 20px;
  opacity: 0.3;
  z-index: 0;
}

.contact-collab .rules > * {
  position: relative;
  z-index: 1;
}

.contact-collab .rules li {
  margin: 1rem 0;
  padding: 0.75rem 0 0.75rem 3rem;
  position: relative;
  counter-increment: rule-counter;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  padding-right: 1rem;
  border-left: 4px solid var(--primary);
}

.contact-collab .rules li::before {
  content: counter(rule-counter);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-weight: 800;
  font-size: 1.1rem;
  width: 28px;
  height: 28px;
  background: var(--bg-card);
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-collab .rules strong {
  color: var(--text-dark);
  font-weight: 700;
  display: inline-block;
  margin-right: 0.5rem;
}

/* 價格區塊 - 增強效果 */
.contact-collab .pricing {
  display: grid;
  grid-template-columns: minmax(320px, 1fr) minmax(320px, 2fr);
  gap: 2rem;
  align-items: start;
  margin-bottom: 2.5rem;
}

@media (max-width: 768px) {
  .contact-collab .pricing {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

/* 價格盒子 - 增強效果 */
.contact-collab .price-box {
  background: var(--bg-card);
  border: 3px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.contact-collab .price-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 8px;
  background: repeating-linear-gradient(
    90deg,
    var(--primary),
    var(--primary) 10px,
    transparent 10px,
    transparent 20px
  );
}

.contact-collab .price-tag {
  display: inline-flex;
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  border: 2px solid var(--primary);
  letter-spacing: 0.5px;
}

/* 價格數字 - 改為強調色 */
.contact-collab .price-num {
  margin-top: 0.75rem;
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -1px;
  line-height: 1;
  font-family: 'Arial', sans-serif;
  /* 價格數字改為深色強調 */
  color: #1e40af; /* 更深的藍色，更有份量感 */
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.25rem;
}

/* 貨幣符號樣式 */
.contact-collab .price-num::before {
  content: 'NT$';
  font-size: 1.1rem;
  color: var(--text-light);
  font-weight: 600;
  margin-right: 0.25rem;
  align-self: flex-start;
  position: relative;
  top: 0.5rem;
}
.contact-collab .price-suffix {
  font-size: 1.1rem;
  font-weight: 800;
  margin-left: 0.25rem;
  /* 紅色強調 */
  color: #dc2626; /* 鮮明的紅色 */
  position: relative;
  top: -0.3rem;
  text-shadow: 0 1px 2px rgba(220, 38, 38, 0.1);
}
/* 添加紅色裝飾 */
.contact-collab .price-suffix::after {
  content: '✨';
  position: absolute;
  top: -0.5rem;
  right: -1.2rem;
  font-size: 0.8rem;
  opacity: 0.7;
  animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
  0%, 100% { opacity: 0.7; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.2); }
}

.contact-collab .price-note {
  margin-top: 1rem;
  color: var(--text);
  line-height: 1.6;
  font-size: 1rem;
  padding: 0.75rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
  position: relative;
  z-index: 1;
}

/* 價格區塊懸停效果增強 */
.contact-collab .price-box:hover .price-num {
  color: #1d4ed8; /* 懸停時稍微亮一點 */
  transform: scale(1.05);
  transition: all 0.3s ease;
}

.contact-collab .price-box:hover .price-suffix {
  color: #ef4444; /* 懸停時更亮的紅色 */
  animation: pulseRed 1s ease-in-out infinite;
}

@keyframes pulseRed {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

/* 響應式調整 */
@media (max-width: 768px) {
  .contact-collab .price-num {
    font-size: 2.5rem;
  }
  
  .contact-collab .price-suffix {
    font-size: 1rem;
    top: -0.2rem;
  }
}

@media (max-width: 480px) {
  .contact-collab .price-num {
    font-size: 2.2rem;
  }
  
  .contact-collab .price-num::before {
    font-size: 0.9rem;
    top: 0.3rem;
  }
  
  .contact-collab .price-suffix {
    font-size: 0.9rem;
    top: -0.1rem;
  }
  
  .contact-collab .price-suffix::after {
    top: -0.3rem;
    right: -1rem;
    font-size: 0.7rem;
  }
}

/* 合作流程 - 增強效果 */
.contact-collab .how {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  color: var(--text);
  line-height: 1.7;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contact-collab .how::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 30% 30%, var(--primary-light) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, var(--primary-light) 0%, transparent 50%);
  opacity: 0.1;
  z-index: 0;
}

.contact-collab .how > * {
  position: relative;
  z-index: 1;
}

.contact-collab .how h3 {
  margin: 0 0 1.5rem;
  font-size: 1.3rem;
  color: var(--text-dark);
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.contact-collab .how h3::before {
  content: '⟳';
  color: var(--primary);
  font-size: 1.2em;
}

.contact-collab .how ol {
  margin: 0;
  padding-left: 0;
  display: grid;
  gap: 1.25rem;
}

.contact-collab .how li {
  margin: 0;
  padding: 1rem 1rem 1rem 3.5rem;
  position: relative;
  counter-increment: step-counter;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}

.contact-collab .how li:hover {
  transform: translateX(5px);
  border-color: var(--primary-light);
  background: var(--bg-card);
}

.contact-collab .how li::before {
  content: counter(step-counter);
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 1.1rem;
  width: 32px;
  height: 32px;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-collab .how code {
  background: var(--bg-card);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 0.85em;
  color: var(--primary-dark);
  border: 1px solid var(--border);
}

/* 作品集 - 增強效果 */
.contact-collab .portfolio {
  margin-top: 2.5rem;
}

.contact-collab .muted {
  color: var(--text-light);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border-left: 4px solid var(--border);
}

.contact-collab .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

/* 作品卡片 - 增強效果 */
.contact-collab .work {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.contact-collab .work::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(45deg, transparent 49.5%, var(--border-light) 49.5%, var(--border-light) 50.5%, transparent 50.5%),
    linear-gradient(-45deg, transparent 49.5%, var(--border-light) 49.5%, var(--border-light) 50.5%, transparent 50.5%);
  background-size: 15px 15px;
  opacity: 0.3;
  z-index: 0;
}

.contact-collab .work > * {
  position: relative;
  z-index: 1;
}

.contact-collab .work:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.contact-collab .work-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  padding-bottom: 1rem;
  border-bottom: 2px dotted var(--border);
}

.contact-collab .work-title {
  margin: 0;
  font-size: 1.3rem;
  color: var(--text-dark);
  font-weight: 700;
  flex: 1;
  min-width: 200px;
}

.contact-collab .work-tag {
  font-size: 0.8rem;
  color: var(--primary-dark);
  background: var(--primary-light);
  border: 2px solid var(--primary);
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.contact-collab .work-desc {
  margin: 1.25rem 0;
  color: var(--text);
  line-height: 1.7;
  font-size: 0.95rem;
  padding: 0.75rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--primary);
}

.contact-collab .work-meta {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 0.75rem;
  color: var(--text-light);
  font-size: 0.85rem;
}

.contact-collab .work-meta li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.contact-collab .work-meta li::before {
  content: attr(data-label);
  font-weight: 600;
  color: var(--text);
  font-size: 0.8rem;
  opacity: 0.8;
}

/* 行動呼籲區 - 增強效果 */
.contact-collab .cta-row {
  margin-top: 3.5rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
  padding-top: 2.5rem;
  border-top: 3px solid var(--border);
  position: relative;
}

.contact-collab .cta-row::before {
  content: '✦';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  color: var(--primary);
  font-size: 1.5rem;
  padding: 0 1rem;
}

/* 響應式調整 */
@media (max-width: 768px) {
  .contact-collab .sub-hero {
    padding: 2rem 0 1.5rem;
  }
  
  .sub-breadcrumb {
    width: 100%;
  }
  
  .contact-collab .sub-actions {
    flex-direction: column;
  }
  
  .contact-collab .cards-2,
  .contact-collab .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-collab .pricing {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .contact-collab .work-meta {
    grid-template-columns: 1fr;
  }
  
  .contact-collab .cta-row {
    flex-direction: column;
    margin-top: 2.5rem;
    gap: 1rem;
  }
  
  .contact-collab .h2 {
    padding: 0.75rem 0 0.75rem 1.25rem;
    font-size: 1.4rem;
  }
}

@media (max-width: 480px) {
  .contact-collab .sub-section {
    padding: 1.75rem 0 3rem;
  }
  
  .contact-collab .h2 {
    font-size: 1.3rem;
    margin: 2rem 0 1.25rem;
  }
  
  .contact-collab .panel,
  .contact-collab .mini,
  .contact-collab .rules,
  .contact-collab .price-box,
  .contact-collab .how,
  .contact-collab .work {
    padding: 1.5rem;
  }
  
  .contact-collab .price-num {
    font-size: 2.5rem;
  }
  
  .contact-collab .work-title {
    min-width: 100%;
  }
}
/* =========================================
   協作項目子頁面樣式 (/contact/collab/) - 增強版
   ========================================= */

/* ... 前面的樣式保持不變 ... */

/* 作品集 - 增強效果，包含空狀態 */
.contact-collab .portfolio {
  margin-top: 2.5rem;
}

.contact-collab .muted {
  color: var(--text-light);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border-left: 4px solid var(--border);
}

/* 空狀態作品集 */
.contact-collab .portfolio-empty {
  background: var(--bg-card);
  border: 3px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  text-align: center;
  margin: 1.5rem 0;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-slow);
}

.contact-collab .portfolio-empty:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.contact-collab .portfolio-empty::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(45deg, transparent 49%, var(--border-light) 49%, var(--border-light) 51%, transparent 51%),
    linear-gradient(-45deg, transparent 49%, var(--border-light) 49%, var(--border-light) 51%, transparent 51%);
  background-size: 40px 40px;
  opacity: 0.1;
  z-index: 0;
}

.contact-collab .portfolio-empty-content {
  position: relative;
  z-index: 1;
}

.contact-collab .empty-icon {
  font-size: 3.5rem;
  color: var(--text-lighter);
  margin-bottom: 1.5rem;
  opacity: 0.5;
  animation: subtleFloat 3s ease-in-out infinite;
}

@keyframes subtleFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.contact-collab .empty-title {
  font-size: 1.5rem;
  color: var(--text-dark);
  font-weight: 700;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.contact-collab .empty-title::before,
.contact-collab .empty-title::after {
  content: '✧';
  color: var(--primary);
  font-size: 1.2rem;
  opacity: 0.7;
}

.contact-collab .empty-desc {
  color: var(--text-light);
  line-height: 1.7;
  font-size: 1.05rem;
  margin-bottom: 2rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 1rem;
}

.contact-collab .empty-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin: 2rem 0 1.5rem;
}

.contact-collab .empty-stat {
  text-align: center;
  padding: 1rem 1.5rem;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 2px solid var(--border);
  min-width: 140px;
  transition: all var(--transition);
}

.contact-collab .empty-stat:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.contact-collab .stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: 'Arial', sans-serif;
}

.contact-collab .stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-collab .empty-timeline {
  margin-top: 2.5rem;
  padding-top: 2rem;
  border-top: 2px dashed var(--border);
}

.contact-collab .timeline-title {
  font-size: 1.1rem;
  color: var(--text-dark);
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.contact-collab .timeline-title::before {
  content: '⏳';
  font-size: 1.2rem;
}

.contact-collab .timeline-steps {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  max-width: 600px;
  margin: 0 auto;
}

.contact-collab .timeline-step {
  flex: 1;
  min-width: 180px;
  text-align: center;
  padding: 1rem;
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 2px solid var(--border);
  position: relative;
  transition: all var(--transition);
}

.contact-collab .timeline-step:hover {
  border-color: var(--primary);
  transform: translateY(-3px);
}

.contact-collab .timeline-step::before {
  content: '○';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--bg-card);
  color: var(--primary);
  font-size: 0.9rem;
  line-height: 20px;
  border-radius: 50%;
  border: 2px solid var(--primary);
}

.contact-collab .timeline-step.current::before {
  content: '●';
  background: var(--primary);
  color: white;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.4); }
  50% { box-shadow: 0 0 0 10px rgba(59, 130, 246, 0); }
}

.contact-collab .step-label {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.contact-collab .step-text {
  font-size: 0.95rem;
  color: var(--text);
  font-weight: 600;
}

.contact-collab .empty-cta {
  margin-top: 2.5rem;
  text-align: center;
}

.contact-collab .empty-cta .btn {
  display: inline-flex;
  width: auto;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
  background: var(--primary);
  color: white;
  border: 2px solid var(--primary-dark);
  font-weight: 700;
  transition: all var(--transition);
}

.contact-collab .empty-cta .btn:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: var(--shadow-lg);
  background: var(--primary-dark);
}

.contact-collab .empty-cta .btn .arrow {
  margin-left: 0.5rem;
  transition: transform var(--transition);
}

.contact-collab .empty-cta .btn:hover .arrow {
  transform: translateX(5px);
}

/* 有作品時的網格樣式保持不變 */
.contact-collab .portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

/* 作品卡片 - 增強效果 */
.contact-collab .work {
  background: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  transition: all var(--transition-slow);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

/* ... 作品卡片樣式保持不變 ... */

/* 響應式調整 - 空狀態 */
@media (max-width: 768px) {
  .contact-collab .empty-stats {
    gap: 1rem;
  }
  
  .contact-collab .empty-stat {
    min-width: 120px;
    padding: 0.75rem 1rem;
  }
  
  .contact-collab .stat-number {
    font-size: 1.75rem;
  }
  
  .contact-collab .timeline-steps {
    flex-direction: column;
    align-items: center;
  }
  
  .contact-collab .timeline-step {
    width: 100%;
    max-width: 300px;
  }
  
  .contact-collab .timeline-step::before {
    top: 50%;
    left: -10px;
    transform: translateY(-50%);
  }
  
  .contact-collab .empty-cta .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .contact-collab .portfolio-empty {
    padding: 2rem 1rem;
  }
  
  .contact-collab .empty-icon {
    font-size: 2.5rem;
  }
  
  .contact-collab .empty-title {
    font-size: 1.3rem;
  }
  
  .contact-collab .empty-stat {
    min-width: calc(50% - 0.5rem);
    padding: 0.75rem;
  }
  
  .contact-collab .stat-number {
    font-size: 1.5rem;
  }
}