/* 增强的卡片样式 */
.card {
  backdrop-filter: blur(20px);
  background: linear-gradient(135deg, 
    rgba(255,255,255,.08) 0%, 
    rgba(255,255,255,.04) 100%);
  border: 1px solid rgba(255,255,255,.15);
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 
    0 8px 32px rgba(0,0,0,0.3),
    0 0 0 1px rgba(255,255,255,.05),
    inset 0 1px 0 rgba(255,255,255,.1);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255,255,255,.3) 50%, 
    transparent 100%);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 12px 40px rgba(0,0,0,0.4),
    0 0 0 1px rgba(255,255,255,.1),
    inset 0 1px 0 rgba(255,255,255,.15);
}

/* 增强的按钮样式 */
.btn {
  background: var(--primary-gradient);
  color: white !important;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.025em;
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 
    0 4px 14px rgba(200,70,194,.3),
    inset 0 1px 0 rgba(255,255,255,.2);
  text-decoration: none;
  display: inline-block;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--shimmer-gradient);
  transition: left 0.5s ease;
  border-radius: inherit;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 8px 25px rgba(200,70,194,.4),
    inset 0 1px 0 rgba(255,255,255,.3);
  color: white !important;
  text-decoration: none;
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #e5e7eb;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 确保下载链接按钮样式正确应用 */
a.btn, a.btn:hover, a.btn:visited, a.btn:active {
  color: white !important;
  text-decoration: none !important;
}

.btn:active {
  transform: translateY(0);
  box-shadow: 
    0 2px 8px rgba(200,70,194,.3),
    inset 0 1px 0 rgba(255,255,255,.1);
}

/* 确保 hidden 类能正确覆盖 btn 的 display 属性 */
.btn.hidden {
  display: none !important;
}

/* 增强的输入框样式 */
.form-input {
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.08) 0%, 
    rgba(255, 255, 255, 0.04) 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: white;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  box-shadow: 
    0 2px 8px rgba(0,0,0,0.1),
    inset 0 1px 0 rgba(255,255,255,0.05);
}

.form-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
  font-style: italic;
}

.form-input:focus {
  outline: none;
  border-color: rgba(200, 70, 194, 0.6);
  background: linear-gradient(135deg, 
    rgba(255, 255, 255, 0.12) 0%, 
    rgba(255, 255, 255, 0.06) 100%);
  box-shadow: 
    0 4px 16px rgba(200, 70, 194, 0.2),
    0 0 0 3px rgba(200, 70, 194, 0.1),
    inset 0 1px 0 rgba(255,255,255,0.1);
  transform: translateY(-1px);
}

/* 语言切换按钮样式 */
.lang-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  padding: 0.75rem 1.25rem;
  border-radius: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  height: 44px;
  min-width: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1;
  position: relative;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  box-sizing: border-box;
  z-index: 9999;
}

.lang-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
  transform: translateY(-1px);
}

.lang-btn.active {
  background: linear-gradient(135deg, #c846c2, #7a2ea0);
  border-color: rgba(200, 70, 194, 0.5);
  color: white;
  box-shadow: 0 4px 14px rgba(200, 70, 194, 0.3);
}

.lang-btn.active:hover {
  background: var(--secondary-gradient);
  box-shadow: 0 6px 20px rgba(200, 70, 194, 0.4);
}

.lang-btn:focus {
  outline: 2px solid rgba(200, 70, 194, 0.5);
  outline-offset: 2px;
}

/* GitHub按钮样式 */
.github-btn {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.7);
  padding: 0.75rem;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  height: 44px;
  width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  position: relative;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  box-sizing: border-box;
  z-index: 9999;
}

.github-btn:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
  color: white;
  transform: translateY(-1px);
  text-decoration: none;
}

.github-btn:focus {
  outline: 2px solid rgba(200, 70, 194, 0.5);
  outline-offset: 2px;
}

.github-btn svg {
  transition: transform 0.2s ease;
}

.github-btn:hover svg {
  transform: scale(1.1);
}

/* 页面底部样式 */
footer a {
  text-decoration: none;
  transition: color 0.2s ease;
}