/* ====================
   全局变量 - 配色管理
   ==================== */
:root {
  /* 主色调 */
  --color-primary: #7B68EE;
  --color-primary-light: #9B7BFF;
  --color-primary-dark: #5B48DE;

  /* 辅助色 */
  --color-secondary: #98FB98;
  --color-secondary-light: #B8FFB8;
  --color-secondary-dark: #78DB78;

  /* 强调色 */
  --color-accent: #FFD700;
  --color-accent-light: #FFE44D;
  --color-accent-dark: #D4AF37;

  /* 背景色 */
  --color-bg-start: #1a1a3e;
  --color-bg-end: #2d1b4e;
  --color-bg-overlay: rgba(0, 0, 0, 0.3);

  /* 文字颜色 */
  --color-text: #FFFFFF;
  --color-text-secondary: #CCCCCC;
  --color-text-muted: #E0E0E0;

  /* 卡片颜色 */
  --color-card-bg: rgba(255, 255, 255, 0.1);
  --color-card-border: rgba(255, 255, 255, 0.2);
  --color-card-hover: rgba(255, 255, 255, 0.15);

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 20px rgba(123, 104, 238, 0.6);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* 字体 */
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ====================
   全局样式重置
   ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* 星光背景效果 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.3), transparent),
    radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(2px 2px at 130px 80px, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 160px 30px, rgba(255, 255, 255, 0.3), transparent);
  background-size: 200px 100px;
  animation: stars 60s linear infinite;
  pointer-events: none;
  z-index: -1;
}

@keyframes stars {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-100px);
  }
}

/* ====================
   容器样式
   ==================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ====================
   页头区域
   ==================== */
header {
  text-align: center;
  padding: 60px 20px 40px;
}

header h1 {
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--color-text);
  margin-bottom: 15px;
  text-shadow: 0 0 20px rgba(123, 104, 238, 0.5);
  letter-spacing: 2px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  font-weight: 300;
}

.seo-description {
  max-width: 900px;
  margin: 25px auto 0;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  text-align: left;
}

.seo-description p {
  margin: 0;
}

/* ====================
   控制面板
   ==================== */
.control-panel {
  background: var(--color-card-bg);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 40px;
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-md);
}

/* 风格选择器 */
.style-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 30px;
}

.style-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--color-card-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.style-btn:hover {
  background: var(--color-card-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.style-btn.active {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-glow);
  animation: glow 2s ease-in-out infinite;
}

.style-btn .btn-icon {
  font-size: 1.3rem;
}

.style-btn .btn-text {
  color: var(--color-text);
}

/* 生成按钮 */
.generate-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0 auto;
  padding: 18px 48px;
  font-size: 1.2rem;
  font-weight: 600;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  color: var(--color-bg-start);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-md);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.generate-btn:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 0 30px rgba(255, 215, 0, 0.6);
}

.generate-btn:active {
  transform: scale(0.98);
}

.generate-btn .btn-icon {
  font-size: 1.5rem;
}

/* ====================
   名字展示区域
   ==================== */
.name-grid-container {
  margin-bottom: 40px;
}

.name-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
  padding: 10px;
}

/* 名字卡片 */
.name-card {
  background: var(--color-card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: 25px 20px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-height: 160px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 10px;
}

.name-card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.name-card:hover {
  transform: translateY(-8px);
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(123, 104, 238, 0.4);
  background: var(--color-card-hover);
}

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

.elf-name {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--color-accent);
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
  z-index: 1;
}

.name-meaning {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
  font-weight: 400;
  z-index: 1;
}

.name-background {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  font-style: italic;
  line-height: 1.3;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 8px;
  z-index: 1;
}

/* Empty state */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-secondary);
  font-size: 1.2rem;
}

.name-grid:not(.empty) .empty-state {
  display: none;
}

/* ====================
   Toast 提示
   ==================== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  padding: 15px 30px;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ====================
   SEO Section
   ==================== */
.seo-section {
  margin-top: 60px;
  margin-bottom: 40px;
}

.seo-section .seo-description {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-primary);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  text-align: left;
}

.seo-section .seo-description p {
  margin: 0;
}

/* ====================
   Footer Area
   ==================== */
footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.copyright {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

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

.contact-email {
  margin-top: 15px;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.contact-email a {
  color: var(--color-primary-light);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.contact-email a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Modal styles */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 30px;
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 15px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 2rem;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.modal-close:hover {
  color: var(--color-accent);
}

.modal h2 {
  color: var(--color-accent);
  margin-bottom: 20px;
  font-size: 1.5rem;
}

.modal p {
  line-height: 1.8;
  margin-bottom: 15px;
}

/* ====================
   Animations
   ==================== */

/* 名字生成动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 发光效果 */
@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 10px rgba(123, 104, 238, 0.5);
  }
  50% {
    box-shadow: 0 0 20px rgba(123, 104, 238, 0.8), 0 0 30px rgba(255, 215, 0, 0.5);
  }
}

/* 名字卡片动画 */
.name-card.animate-in {
  animation: fadeInUp 0.5s ease-out forwards;
  opacity: 0;
}

/* ====================
   响应式设计
   ==================== */

/* 平板端 (768px - 1199px) */
@media (max-width: 1199px) {
  header h1 {
    font-size: 2.2rem;
  }

  .name-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 15px;
  }

  .style-selector {
    gap: 10px;
  }

  .style-btn {
    padding: 10px 20px;
    font-size: 0.95rem;
  }
}

/* 移动端 (最大 767px) */
@media (max-width: 767px) {
  header {
    padding: 40px 20px 30px;
  }

  header h1 {
    font-size: 1.8rem;
    letter-spacing: 1px;
  }

  .subtitle {
    font-size: 1rem;
  }

  .seo-section {
    margin-top: 40px;
    margin-bottom: 30px;
  }

  .seo-section .seo-description {
    padding: 15px;
    font-size: 0.9rem;
  }

  .control-panel {
    padding: 20px;
  }

  .style-selector {
    gap: 8px;
  }

  .style-btn {
    flex: 1 1 calc(50% - 4px);
    padding: 10px 16px;
    font-size: 0.9rem;
  }

  .style-btn .btn-icon {
    font-size: 1.2rem;
  }

  .generate-btn {
    width: 100%;
    padding: 16px 32px;
    font-size: 1.1rem;
  }

  .name-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    padding: 5px;
  }

  .name-card {
    min-height: 140px;
    padding: 20px 15px;
  }

  .elf-name {
    font-size: 1.3rem;
  }

  .name-meaning {
    font-size: 0.9rem;
  }

  .name-background {
    font-size: 0.8rem;
  }

  .toast {
    left: 50%;
    right: auto;
    bottom: 20px;
    font-size: 0.9rem;
    padding: 12px 24px;
  }
}

/* 小屏幕移动端 (最大 480px) */
@media (max-width: 480px) {
  header h1 {
    font-size: 1.5rem;
  }

  .style-btn {
    flex: 1 1 100%;
  }

  .name-grid {
    grid-template-columns: 1fr;
  }
}

/* ====================
   无障碍优化
   ==================== */

/* 焦点样式 */
button:focus-visible,
.name-card:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

/* 减少动画（用户偏好） */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
  .name-card,
  .control-panel {
    background: rgba(0, 0, 0, 0.8);
    border: 2px solid white;
  }
}