/* ============================================
   巨寶數碼 - 深色科技風格網站
   ============================================ */

/* CSS 變數定義 */
:root {
  /* 背景顏色 */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #252525;
  
  /* 主題色 */
  --accent-blue: #00d4ff;
  --accent-purple: #b026ff;
  --accent-cyan: #00ffcc;
  --accent-pink: #ff00cc;
  
  /* 文字顏色 */
  --text-primary: #ffffff;
  --text-secondary: #b0b0b0;
  --text-muted: #808080;
  
  /* 邊框和陰影 */
  --border-color: rgba(0, 212, 255, 0.3);
  --glow-blue: 0 0 20px rgba(0, 212, 255, 0.5);
  --glow-purple: 0 0 20px rgba(176, 38, 255, 0.5);
  --glow-cyan: 0 0 20px rgba(0, 255, 204, 0.5);
  
  /* 間距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* 字體 */
  --font-primary: 'Segoe UI', 'Microsoft JhengHei', '微軟正黑體', Arial, sans-serif;
  --font-mono: 'Courier New', monospace;
}

/* 重置樣式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* 網格背景 */
.grid-pattern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(0, 212, 255, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.1) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
}

/* 容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 1;
}

/* 通用按鈕樣式 */
.btn {
  display: inline-block;
  padding: 12px 30px;
  background: transparent;
  border: 2px solid var(--accent-blue);
  color: var(--accent-blue);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.3s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.2), transparent);
  transition: left 0.5s;
}

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

.btn:hover {
  background: var(--accent-blue);
  color: var(--bg-primary);
  box-shadow: var(--glow-blue);
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--bg-primary);
}

.btn-primary:hover {
  background: var(--accent-cyan);
  box-shadow: var(--glow-cyan);
}

/* 標題樣式 */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0, 212, 255, 0.5);
}

h2 {
  font-size: 2.5rem;
  color: var(--text-primary);
}

h3 {
  font-size: 1.8rem;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-lg);
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), transparent);
  box-shadow: var(--glow-blue);
}

/* 卡片樣式 */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(176, 38, 255, 0.1));
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

.card:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--glow-blue);
  transform: translateY(-5px);
}

/* 發光效果 */
.glow-effect {
  box-shadow: var(--glow-blue);
}

.neon-border {
  border: 2px solid var(--accent-blue);
  box-shadow: var(--glow-blue);
}

/* 工具類 */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--text-secondary);
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Header 樣式 */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  padding: var(--spacing-sm) 0;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all 0.3s ease;
}

.logo:hover {
  color: var(--accent-blue);
  text-shadow: var(--glow-blue);
}

.logo img {
  height: 40px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 500;
  transition: all 0.3s ease;
  position: relative;
  padding: 5px 0;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: width 0.3s ease;
}

nav a:hover,
nav a.active {
  color: var(--accent-blue);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

.language-selector {
  display: flex;
  gap: var(--spacing-xs);
  align-items: center;
}

.language-selector a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  padding: 5px 10px;
  border-radius: 4px;
  transition: all 0.3s ease;
}

.language-selector a:hover,
.language-selector a.active {
  color: var(--accent-blue);
  background: rgba(0, 212, 255, 0.1);
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  width: 25px;
  height: 2px;
  background: var(--text-primary);
  transition: all 0.3s ease;
}

.mobile-menu-btn.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 10, 0.98);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-md);
}

.mobile-menu.active {
  display: block;
}

.mobile-menu ul {
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Footer 樣式 */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section h3 {
  color: var(--accent-blue);
  margin-bottom: var(--spacing-sm);
  font-size: 1.2rem;
}

.footer-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
}

.footer-section ul li a:hover {
  color: var(--accent-blue);
  transform: translateX(5px);
}

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.social-links a {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-links a:hover {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: var(--glow-blue);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-bottom-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.footer-bottom-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-bottom-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.3s ease;
}

.footer-bottom-links a:hover {
  color: var(--accent-blue);
}

/* 主要內容區域 */
main {
  min-height: calc(100vh - 200px);
  padding-top: 80px;
  position: relative;
  z-index: 1;
}

/* 響應式設計 */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  nav {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .footer-content {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom-content {
    flex-direction: column;
    text-align: center;
  }
  
  .language-selector {
    margin-left: auto;
    margin-right: var(--spacing-sm);
  }
}

/* 表單樣式 */
input, textarea, select {
  font-family: inherit;
}

input:focus, textarea:focus, select:focus {
  outline: none;
}

input.error, textarea.error {
  border-color: #ff0066 !important;
  box-shadow: 0 0 10px rgba(255, 0, 102, 0.3) !important;
}

.error-message {
  color: #ff0066;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* 留言板樣式 */
.message-item {
  margin-bottom: var(--spacing-md);
}

.message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--border-color);
}

.message-header strong {
  color: var(--accent-blue);
}

.message-date {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.message-content {
  color: var(--text-secondary);
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
}