/* 高级感简约风格优化样式 */

/* CSS变量 - 高级配色系统 */
:root {
  /* 主色调 - 深蓝灰 */
  --primary: #0f172a;
  --primary-light: #1e293b;
  --primary-dark: #020617;
  
  /* 强调色 - 高级琥珀金 */
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-dark: #d97706;
  
  /* 中性色 */
  --neutral-50: #f8fafc;
  --neutral-100: #f1f5f9;
  --neutral-200: #e2e8f0;
  --neutral-300: #cbd5e1;
  --neutral-400: #94a3b8;
  --neutral-500: #64748b;
  --neutral-600: #475569;
  --neutral-700: #334155;
  --neutral-800: #1e293b;
  --neutral-900: #0f172a;
  
  /* 渐变 */
  --gradient-hero: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #334155 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(15,23,42,0.03) 100%);
  
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.1), 0 2px 4px -2px rgba(15, 23, 42, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.1), 0 4px 6px -4px rgba(15, 23, 42, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.1);
  --shadow-glow: 0 0 40px rgba(245, 158, 11, 0.3);
  
  /* 动画 */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 页面加载动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes countUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(245, 158, 11, 0.4); }
  50% { box-shadow: 0 0 40px rgba(245, 158, 11, 0.6); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* 滚动显示动画类 */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all var(--transition-slow);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all var(--transition-slow);
}

.reveal-left.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all var(--transition-slow);
}

.reveal-right.active {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: all var(--transition-slow);
}

.reveal-scale.active {
  opacity: 1;
  transform: scale(1);
}

/* 错开动画延迟 */
.stagger-1 { transition-delay: 100ms; }
.stagger-2 { transition-delay: 200ms; }
.stagger-3 { transition-delay: 300ms; }
.stagger-4 { transition-delay: 400ms; }
.stagger-5 { transition-delay: 500ms; }
.stagger-6 { transition-delay: 600ms; }

/* 导航栏优化 */
.nav-scrolled {
  background: rgba(255, 255, 255, 0.98) !important;
  backdrop-filter: blur(20px) !important;
  box-shadow: var(--shadow-md) !important;
}

.nav-scrolled .text-primary {
  color: var(--primary) !important;
}

/* Hero区域优化 */
.hero-title {
  background: linear-gradient(135deg, #ffffff 0%, #fbbf24 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* 按钮高级效果 */
.btn-primary {
  position: relative;
  overflow: hidden;
  background: var(--gradient-accent) !important;
  border: none !important;
  transition: all var(--transition-base) !important;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: left 0.5s;
}

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

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow) !important;
}

.btn-outline {
  position: relative;
  border: 2px solid rgba(255,255,255,0.3) !important;
  background: transparent !important;
  transition: all var(--transition-base) !important;
}

.btn-outline:hover {
  border-color: var(--accent) !important;
  background: rgba(245, 158, 11, 0.1) !important;
  transform: translateY(-2px);
}

/* 卡片高级效果 */
.card-premium {
  background: white;
  border-radius: 20px;
  padding: 2rem;
  transition: all var(--transition-base);
  border: 1px solid rgba(15, 23, 42, 0.05);
  position: relative;
  overflow: hidden;
}

.card-premium::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

.card-premium:hover::before {
  transform: scaleX(1);
}

.card-premium:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

/* 图片高级效果 */
.image-hover {
  overflow: hidden;
  border-radius: 16px;
}

.image-hover img {
  transition: transform var(--transition-slow);
}

.image-hover:hover img {
  transform: scale(1.08);
}

.image-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 0%, rgba(15, 23, 42, 0.8) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

.image-hover:hover .image-overlay {
  opacity: 1;
}

/* 统计数据动画 */
.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 服务卡片网格 */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

/* 时间线样式 */
.timeline-step {
  position: relative;
  padding-left: 3rem;
}

.timeline-step::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
}

/* 语言切换器优化 */
.lang-btn {
  position: relative;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all var(--transition-fast);
  font-weight: 500;
}

.lang-btn:hover {
  background: var(--neutral-100);
  transform: scale(1.05);
}

.lang-btn.active {
  background: var(--primary);
  color: white;
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
  background: var(--neutral-400);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neutral-500);
}

/* 加载动画 */
.page-loader {
  position: fixed;
  inset: 0;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s, visibility 0.5s;
}

.page-loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-spinner {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(255,255,255,0.1);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* 响应式优化 */
@media (max-width: 768px) {
  .stat-number {
    font-size: 2.5rem;
  }
  
  .card-premium {
    padding: 1.5rem;
  }
}