/* ===== Cyberpunk 2077 風格 - 絲滑動畫版 ===== */

:root {
  --cyber-cyan: #00f0ff;
  --cyber-pink: #ff2a6d;
  --cyber-purple: #bd00ff;
  --cyber-yellow: #f9f002;
  --cyber-blue: #0a0e27;
  --cyber-dark: #050816;
  --cyber-darker: #020408;
  --cyber-gray: #1a1f3c;
  --cyber-light: #e0e6ff;
  
  --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.5), 0 0 40px rgba(0, 240, 255, 0.3);
  --glow-pink: 0 0 20px rgba(255, 42, 109, 0.5), 0 0 40px rgba(255, 42, 109, 0.3);
  --glow-purple: 0 0 20px rgba(189, 0, 255, 0.5), 0 0 40px rgba(189, 0, 255, 0.3);
  
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== 基礎樣式 ===== */
.cyber-body {
  background: var(--cyber-darker);
  color: var(--cyber-light);
  overflow-x: hidden;
  min-height: 100vh;
}

/* ===== 載入動畫 ===== */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--cyber-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  transition: opacity 0.5s var(--ease-out-expo), visibility 0.5s;
}

.page-loader.loaded {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-content {
  text-align: center;
}

.loader-glitch {
  font-family: 'Orbitron', monospace;
  font-size: 2rem;
  font-weight: 700;
  color: var(--cyber-cyan);
  text-shadow: var(--glow-cyan);
  letter-spacing: 0.5em;
  animation: glitchText 2s infinite;
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: var(--cyber-gray);
  margin: 20px auto;
  border-radius: 2px;
  overflow: hidden;
}

.loader-progress {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyber-cyan), var(--cyber-pink));
  box-shadow: var(--glow-cyan);
  transition: width 0.3s var(--ease-out-expo);
}

.loader-percent {
  font-family: 'Orbitron', monospace;
  font-size: 0.875rem;
  color: var(--cyber-cyan);
  opacity: 0.7;
}

@keyframes glitchText {
  0%, 90%, 100% { opacity: 1; transform: translateX(0); }
  92% { opacity: 0.8; transform: translateX(-2px); }
  94% { opacity: 0.8; transform: translateX(2px); }
  96% { opacity: 0.9; transform: translateX(-1px); }
}

/* ===== 背景效果 ===== */
.cyber-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.cyber-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.cyber-scanline {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 2px,
    rgba(0, 0, 0, 0.1) 2px,
    rgba(0, 0, 0, 0.1) 4px
  );
  opacity: 0.3;
}

#particle-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

/* ===== 主內容區 ===== */
.site-main {
  position: relative;
  z-index: 1;
  padding: 2rem 0 4rem;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Hero 區域 ===== */
.hero-section {
  text-align: center;
  padding: 6rem 0 5rem;
  opacity: 0;
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* ===== Cyberpunk 2077 風格 Logo 動畫 ===== */
.cyber-logo {
  position: relative;
  margin-bottom: 3rem;
}

/* 主標題容器 */
.logo-main {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
  transform: skewX(-8deg);
}

/* Logo 層 - 共用樣式 - Cyberpunk 2077 風格 */
.logo-layer {
  font-family: 'Teko', 'Audiowide', sans-serif;
  font-size: clamp(4rem, 18vw, 9rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 0.85;
  white-space: nowrap;
  text-transform: uppercase;
  font-style: italic;
}

/* 青色主層 - 使用純色 + 發光效果 */
.logo-cyan {
  position: relative;
  color: #00f0ff;
  text-shadow: 
    0 0 10px #00f0ff,
    0 0 20px #00f0ff,
    0 0 40px rgba(0, 240, 255, 0.5),
    0 0 80px rgba(0, 240, 255, 0.3);
  z-index: 2;
}

/* 粉色 Glitch 層 */
.logo-pink {
  position: absolute;
  top: 0;
  left: 0;
  color: #ff2a6d;
  text-shadow: 
    0 0 10px #ff2a6d,
    0 0 20px #ff2a6d;
  opacity: 0;
  z-index: 1;
  pointer-events: none;
}

/* 單個字符 */
.logo-char {
  display: inline-block;
}

/* 副標題區塊 - Cyberpunk 風格 */
.logo-sub {
  position: relative;
  display: inline-block;
  padding: 0.5rem 2rem;
  margin-top: 0.5rem;
  transform: skewX(-8deg);
  /* 確保初始可見 */
  opacity: 1;
}

.sub-bg {
  position: absolute;
  inset: 0;
  /* 半透明科技感背景 */
  background: linear-gradient(
    90deg,
    rgba(0, 240, 255, 0.08),
    rgba(124, 255, 0, 0.05),
    rgba(0, 240, 255, 0.08)
  );
  border: 1px solid rgba(0, 240, 255, 0.4);
  box-shadow: 
    0 0 15px rgba(0, 240, 255, 0.2),
    0 0 30px rgba(124, 255, 0, 0.1),
    inset 0 0 20px rgba(0, 240, 255, 0.03);
  transform: scaleX(0);
  transform-origin: left;
  z-index: 1;
  /* 切角效果 */
  clip-path: polygon(2% 0, 100% 0, 98% 100%, 0% 100%);
}

/* 掃描線動畫 */
.sub-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(124, 255, 0, 0.3),
    rgba(0, 240, 255, 0.2),
    transparent
  );
  animation: scanLine 2.5s ease-in-out infinite;
  animation-delay: 1.5s;
}

@keyframes scanLine {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* 副標題文字 - 使用純色避免 background-clip 問題 */
.sub-text {
  position: relative;
  z-index: 2;
  font-family: 'Teko', 'Audiowide', sans-serif;
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 600;
  letter-spacing: 0.2em;
  /* 科技綠色 + 發光效果 */
  color: #7cff00;
  text-shadow: 
    0 0 8px rgba(124, 255, 0, 0.9),
    0 0 16px rgba(124, 255, 0, 0.6),
    0 0 32px rgba(0, 240, 255, 0.4);
  text-transform: uppercase;
  font-style: italic;
  /* 確保文字可見 */
  opacity: 1;
  visibility: visible;
}

/* 英文副標題樣式 */
.sub-text-en {
  letter-spacing: 0.1em;
  font-size: clamp(1.3rem, 4vw, 2.2rem);
}

.sub-char {
  display: inline-block;
}

/* 裝飾元素 */
.logo-decor {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 100%;
  pointer-events: none;
}

.decor-line {
  position: absolute;
  top: 30%;
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyber-cyan), transparent);
  transform: scaleX(0);
}

.decor-line.left {
  right: 100%;
  margin-right: 20px;
  transform-origin: right;
}

.decor-line.right {
  left: 100%;
  margin-left: 20px;
  background: linear-gradient(-90deg, var(--cyber-cyan), transparent);
  transform-origin: left;
}

.decor-dot {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--cyber-cyan);
  border-radius: 50%;
  box-shadow: var(--glow-cyan);
  opacity: 0;
}

.decor-dot.dot-1 {
  top: 20%;
  right: 100%;
  margin-right: 110px;
}

.decor-dot.dot-2 {
  top: 20%;
  left: 100%;
  margin-left: 110px;
}

/* 描述文字 */
.hero-desc {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: rgba(224, 230, 255, 0.7);
  margin-bottom: 3rem;
  opacity: 0;
  transform: translateY(20px);
}

.desc-bracket {
  color: var(--cyber-cyan);
  font-weight: 700;
}

.desc-text {
  margin: 0 8px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.stat-item {
  text-align: center;
  opacity: 1;
}

.stat-number {
  display: block;
  font-family: 'Orbitron', monospace;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--cyber-cyan);
  text-shadow: var(--glow-cyan);
  line-height: 1;
  opacity: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: rgba(224, 230, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 4px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, transparent, var(--cyber-cyan), transparent);
  opacity: 1;
}

/* ===== Section 標題 ===== */
.section-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyber-cyan), transparent);
}

.section-title {
  font-family: 'Orbitron', 'LXGW WenKai TC', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cyber-light);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 12px;
}

.title-icon {
  color: var(--cyber-cyan);
  font-size: 0.75rem;
}

/* ===== 系列卡片 ===== */
.series-section {
  padding: 2rem 0;
  opacity: 0;
}

.series-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

@media (max-width: 900px) {
  .series-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .series-grid {
    grid-template-columns: 1fr;
  }
}

.series-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: linear-gradient(135deg, rgba(26, 31, 60, 0.8), rgba(10, 14, 39, 0.9));
  border-radius: 12px;
  padding: 2rem;
  text-decoration: none;
  overflow: hidden;
  transform: translateY(0);
  transition: transform 0.4s var(--ease-out-expo);
  min-height: 280px;
}

.series-card:hover {
  transform: translateY(-8px);
}

.card-glow {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.4s var(--ease-out-expo);
}

.series-card:hover .card-glow {
  opacity: 1;
}

.series-card[data-card="cpp"] .card-glow {
  background: radial-gradient(circle at 50% 0%, rgba(0, 240, 255, 0.15), transparent 60%);
}

.series-card[data-card="flutter"] .card-glow {
  background: radial-gradient(circle at 50% 0%, rgba(189, 0, 255, 0.15), transparent 60%);
}

.series-card[data-card="security"] .card-glow {
  background: radial-gradient(circle at 50% 0%, rgba(255, 42, 109, 0.15), transparent 60%);
}

.card-border {
  position: absolute;
  inset: 0;
  border-radius: 12px;
  border: 1px solid rgba(0, 240, 255, 0.2);
  transition: border-color 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-expo);
}

.series-card:hover .card-border {
  border-color: var(--cyber-cyan);
  box-shadow: inset 0 0 30px rgba(0, 240, 255, 0.1);
}

.series-card[data-card="flutter"]:hover .card-border {
  border-color: var(--cyber-purple);
  box-shadow: inset 0 0 30px rgba(189, 0, 255, 0.1);
}

.series-card[data-card="security"]:hover .card-border {
  border-color: var(--cyber-pink);
  box-shadow: inset 0 0 30px rgba(255, 42, 109, 0.1);
}

.card-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: flex-start;  /* 內容靠上對齊 */
}

.card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 1.25rem;
  color: var(--cyber-cyan);
  transition: color 0.3s, transform 0.4s var(--ease-out-expo);
}

.series-card:hover .card-icon {
  transform: scale(1.1);
}

.series-card[data-card="flutter"] .card-icon { color: var(--cyber-purple); }
.series-card[data-card="security"] .card-icon { color: var(--cyber-pink); }

.card-icon svg {
  width: 100%;
  height: 100%;
}

.card-title {
  font-family: 'Orbitron', 'LXGW WenKai TC', sans-serif;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--cyber-light);
  margin-bottom: 0.75rem;
  height: 2.5rem; /* 固定標題高度，避免單雙行標題導致下方內容位移 */
  display: flex;
  align-items: center;
}

.card-desc {
  font-size: 0.875rem;
  color: rgba(224, 230, 255, 0.6);
  line-height: 1.6;
  margin-bottom: 1.5rem;
  min-height: 2.8em;  /* 約兩行文字高度 */
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.card-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: rgba(224, 230, 255, 0.5);
}

.tag-dot {
  width: 6px;
  height: 6px;
  background: var(--cyber-cyan);
  border-radius: 50%;
}

.series-card[data-card="flutter"] .tag-dot { background: var(--cyber-purple); }
.series-card[data-card="security"] .tag-dot { background: var(--cyber-pink); }

.card-arrow {
  display: flex;
  align-items: center;
  gap: 6px;
  font-family: 'Orbitron', monospace;
  font-size: 0.75rem;
  color: var(--cyber-cyan);
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.3s, transform 0.3s var(--ease-out-expo);
}

.series-card:hover .card-arrow {
  opacity: 1;
  transform: translateX(0);
}

.series-card[data-card="flutter"] .card-arrow { color: var(--cyber-purple); }
.series-card[data-card="security"] .card-arrow { color: var(--cyber-pink); }

.card-arrow svg {
  width: 16px;
  height: 16px;
}

.card-hologram {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(0deg, rgba(0, 240, 255, 0.05), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.series-card:hover .card-hologram {
  opacity: 1;
}


/* ===== 最新文章 ===== */
.recent-section {
  padding: 3rem 0;
  opacity: 0;
}

.posts-container {
  margin-bottom: 2rem;
}

.post-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  opacity: 0;
  transform: translateX(-20px);
}

.post-index {
  font-family: 'Orbitron', monospace;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--cyber-cyan);
  opacity: 0.3;
  min-width: 30px;
}

.post-link {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  text-decoration: none;
  transition: transform 0.3s var(--ease-out-expo);
}

.post-link:hover {
  transform: translateX(8px);
}

.post-info {
  flex: 1;
}

.post-category {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--cyber-pink);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.post-title {
  font-family: 'LXGW WenKai TC', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  color: var(--cyber-light);
  transition: color 0.3s;
  line-height: 1.4;
}

.post-link:hover .post-title {
  color: var(--cyber-cyan);
}

.post-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: rgba(224, 230, 255, 0.4);
  white-space: nowrap;
}

.post-line {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyber-cyan), transparent);
  opacity: 0.1;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s var(--ease-out-expo);
}

.post-item:hover .post-line {
  transform: scaleX(1);
}

/* ===== 查看全部按鈕 ===== */
.view-all-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 28px;
  background: transparent;
  border: 1px solid var(--cyber-cyan);
  border-radius: 4px;
  text-decoration: none;
  overflow: hidden;
  transition: all 0.4s var(--ease-out-expo);
}

.view-all-btn:hover {
  background: rgba(0, 240, 255, 0.1);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

.btn-text {
  font-family: 'Orbitron', 'LXGW WenKai TC', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--cyber-cyan);
  letter-spacing: 0.05em;
}

.btn-icon {
  display: flex;
  color: var(--cyber-cyan);
  transition: transform 0.3s var(--ease-out-expo);
}

.view-all-btn:hover .btn-icon {
  transform: translateX(4px);
}

.btn-icon svg {
  width: 18px;
  height: 18px;
}

.btn-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(0, 240, 255, 0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s var(--ease-out-expo);
}

.view-all-btn:hover .btn-glow {
  transform: translateX(100%);
}

/* ===== 側邊裝飾 ===== */
.side-decor {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  pointer-events: none;
  opacity: 0;
}

.side-decor.left {
  left: 20px;
}

.side-decor.right {
  right: 20px;
}

.decor-line {
  width: 2px;
  height: 200px;
  background: linear-gradient(180deg, transparent, var(--cyber-cyan), transparent);
  margin: 0 auto 20px;
}

.decor-nodes {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.decor-nodes span {
  width: 8px;
  height: 8px;
  background: var(--cyber-cyan);
  border-radius: 50%;
  box-shadow: var(--glow-cyan);
  animation: nodePulse 2s infinite;
}

.decor-nodes span:nth-child(2) { animation-delay: 0.5s; }
.decor-nodes span:nth-child(3) { animation-delay: 1s; }
.decor-nodes span:nth-child(4) { animation-delay: 1.5s; }

@keyframes nodePulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.3); opacity: 1; }
}

.decor-bars {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.decor-bars span {
  height: 3px;
  background: var(--cyber-pink);
  border-radius: 2px;
  animation: barPulse 3s infinite;
}

.decor-bars span:nth-child(1) { width: 40px; animation-delay: 0s; }
.decor-bars span:nth-child(2) { width: 60px; animation-delay: 0.3s; }
.decor-bars span:nth-child(3) { width: 30px; animation-delay: 0.6s; }
.decor-bars span:nth-child(4) { width: 50px; animation-delay: 0.9s; }
.decor-bars span:nth-child(5) { width: 35px; animation-delay: 1.2s; }

@keyframes barPulse {
  0%, 100% { opacity: 0.3; transform: scaleX(1); }
  50% { opacity: 0.8; transform: scaleX(1.1); }
}

/* ===== 滑鼠光暈 ===== */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 60%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  transform: translate(-50%, -50%);
  will-change: transform;
}

/* ===== 響應式 ===== */
@media (max-width: 1200px) {
  .side-decor {
    display: none;
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 3rem 0 4rem;
  }
  
  .hero-title {
    font-size: 1.75rem;
  }
  
  .hero-stats {
    gap: 1rem;
  }
  
  .stat-number {
    font-size: 1.75rem;
  }
  
  .series-grid {
    grid-template-columns: 1fr;
  }
  
  .post-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .post-index {
    display: none;
  }
  
  .post-link {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ===== 滾動條 ===== */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--cyber-darker);
}

::-webkit-scrollbar-thumb {
  background: var(--cyber-gray);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--cyber-cyan);
}


/* ===== Header 樣式 ===== */
.cyber-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(5, 8, 22, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.cyber-header .header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
}

.site-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  font-family: 'Orbitron', monospace;
  font-size: 1.25rem;
  font-weight: 700;
}

.logo-bracket {
  color: var(--cyber-cyan);
  opacity: 0.5;
  transition: opacity 0.3s;
}

.site-logo:hover .logo-bracket {
  opacity: 1;
}

.logo-text {
  color: var(--cyber-light);
  margin: 0 4px;
  transition: color 0.3s, text-shadow 0.3s;
}

.site-logo:hover .logo-text {
  color: var(--cyber-cyan);
  text-shadow: var(--glow-cyan);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  position: relative;
  text-decoration: none;
  padding: 8px 0;
}

.nav-text {
  font-family: 'Orbitron', 'LXGW WenKai TC', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(224, 230, 255, 0.7);
  letter-spacing: 0.05em;
  transition: color 0.3s;
}

.nav-link:hover .nav-text {
  color: var(--cyber-cyan);
}

.nav-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--cyber-cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.3s var(--ease-out-expo);
}

.nav-link:hover .nav-line {
  transform: scaleX(1);
  transform-origin: left;
}

.header-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyber-cyan), transparent);
  opacity: 0.3;
}

/* ===== Footer 樣式 ===== */
.site-footer {
  position: relative;
  background: var(--cyber-darker);
  border-top: 1px solid rgba(0, 240, 255, 0.1);
  padding: 2rem 0;
  margin-top: 4rem;
}

.site-footer .container {
  text-align: center;
}

.site-footer p {
  font-size: 0.875rem;
  color: rgba(224, 230, 255, 0.4);
  margin-bottom: 0.5rem;
}

.site-footer a {
  color: var(--cyber-cyan);
  text-decoration: none;
  transition: text-shadow 0.3s;
}

.site-footer a:hover {
  text-shadow: var(--glow-cyan);
}

/* ===== 調整主內容區 padding ===== */
.site-main {
  padding-top: 80px;
}

/* ===== 移動端 Header ===== */
@media (max-width: 768px) {
  .site-nav {
    gap: 1rem;
  }
  
  .nav-text {
    font-size: 0.75rem;
  }
  
  .site-logo {
    font-size: 1rem;
  }
}