/* ============================================
   苏竹斋集团 - 自定义样式
   苹果官网风格设计系统
   ============================================ */

/* ---------- 设计令牌 ---------- */
:root {
  /* 紫色系主色 */
  --purple-900: #2D1B4E;
  --purple-800: #3D2466;
  --purple-700: #6B46C1;
  --purple-600: #7C3AED;
  --purple-500: #9F7AEA;
  --purple-400: #B794F4;
  --purple-300: #D6BCFA;
  --purple-200: #E9D8FD;
  --purple-100: #F3EBFF;
  --purple-50: #FAF5FF;

  /* 中性色 */
  --black: #1D1D1F;
  --gray-700: #3A3A3C;
  --gray-600: #6E6E73;
  --gray-500: #86868B;
  --gray-400: #AEAEB2;
  --gray-300: #C7C7CC;
  --gray-200: #F5F5F7;
  --gray-100: #FAFAFC;
  --white: #FFFFFF;
}

/* ---------- 基础重置 ---------- */
* {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text',
    'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  color: var(--black);
  background-color: var(--white);
  overflow-x: hidden;
  scrollbar-width: thin; /* Firefox */
  scrollbar-color: var(--purple-600) transparent;
}

/* ---------- 自定义滚动条（隐藏轨道，保留滑块） ---------- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--purple-500), var(--purple-700));
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
  transition: width 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--purple-400), var(--purple-600));
  border-radius: 10px;
  background-clip: padding-box;
}

::-webkit-scrollbar-thumb:active {
  background: linear-gradient(180deg, var(--purple-600), var(--purple-800));
}

/* Firefox 滚动条 */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--purple-600) var(--gray-200);
}

/* ---------- 渐变背景（白色主调，紫色点缀） ---------- */
.gradient-hero {
  background:
    radial-gradient(ellipse at top left, rgba(191, 148, 244, 0.18), transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(159, 122, 234, 0.15), transparent 50%),
    linear-gradient(180deg, #FFFFFF 0%, #FAFAFC 100%);
}

.gradient-purple-soft {
  background: linear-gradient(180deg, #FFFFFF 0%, #FAF5FF 100%);
}

.gradient-purple-deep {
  background:
    radial-gradient(ellipse at top, rgba(159, 122, 234, 0.12), transparent 60%),
    radial-gradient(ellipse at bottom, rgba(107, 70, 193, 0.08), transparent 60%),
    linear-gradient(180deg, #FFFFFF 0%, #F5F5F7 100%);
}

.gradient-text {
  background: linear-gradient(135deg, #7C3AED 0%, #6B46C1 50%, #4c1d95 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

/* ---------- 玻璃态效果（高级高斯模糊） ---------- */
.glass {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: saturate(180%) blur(30px);
  -webkit-backdrop-filter: saturate(180%) blur(30px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.glass-card {
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: 0 8px 32px rgba(45, 27, 78, 0.06);
}

.glass-tint {
  background: rgba(243, 235, 255, 0.5);
  backdrop-filter: saturate(180%) blur(24px);
  -webkit-backdrop-filter: saturate(180%) blur(24px);
  border: 1px solid rgba(191, 148, 244, 0.2);
}

.glass-dark {
  background: rgba(29, 27, 46, 0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
}

/* ---------- 滚动动画 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ---------- 滚动指示器动画 ---------- */
.scroll-indicator {
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(10px); opacity: 0.5; }
}

/* ---------- 产品卡片悬停效果 ---------- */
.product-card {
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px -15px rgba(107, 70, 193, 0.25),
              0 10px 30px -10px rgba(45, 27, 78, 0.15);
}

.product-card:hover .product-icon-wrap {
  transform: scale(1.08) rotate(-3deg);
}

.product-icon-wrap {
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- 按钮微交互 ---------- */
.btn-primary {
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px -5px rgba(107, 70, 193, 0.5);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.btn-secondary:hover {
  transform: translateY(-2px);
}

/* ---------- 导航链接下划线动画 ---------- */
.nav-link {
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--purple-700);
  transition: width 0.3s ease, left 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

/* ---------- 浮动光斑装饰（柔和点缀） ---------- */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  pointer-events: none;
  animation: float 20s ease-in-out infinite;
}

.blob-1 {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(191, 148, 244, 0.6), transparent 70%);
  top: -120px;
  right: -120px;
  animation-delay: 0s;
}

.blob-2 {
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(214, 188, 250, 0.5), transparent 70%);
  bottom: -80px;
  left: -80px;
  animation-delay: -10s;
}

.blob-3 {
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(159, 122, 234, 0.35), transparent 70%);
  top: 40%;
  left: 50%;
  animation-delay: -5s;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

/* ---------- 数字计数动画 ---------- */
.stat-number {
  font-variant-numeric: tabular-nums;
}

/* ---------- 移动端菜单动画 ---------- */
.mobile-menu {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.hidden-menu {
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

/* ---------- 流程步骤连接线 ---------- */
.step-connector {
  background: linear-gradient(90deg, var(--purple-300), var(--purple-500), var(--purple-300));
}

/* ---------- 选中文字颜色 ---------- */
::selection {
  background: var(--purple-200);
  color: var(--purple-900);
}

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

/* ---------- 焦点可见性 ---------- */
:focus-visible {
  outline: 2px solid var(--purple-600);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============================================
   加载动画 Preloader
   ============================================ */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.preloader-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader-logo {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, #7C3AED, #2D1B4E);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  animation: preloaderPulse 1.4s ease-in-out infinite;
}

.preloader-ring {
  position: absolute;
  width: 80px;
  height: 80px;
  border: 2px solid transparent;
  border-top-color: #6B46C1;
  border-right-color: #B794F4;
  border-radius: 50%;
  animation: preloaderSpin 1s linear infinite;
}

@keyframes preloaderPulse {
  0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(107, 70, 193, 0.4); }
  50% { transform: scale(1.08); box-shadow: 0 0 0 12px rgba(107, 70, 193, 0); }
}

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

/* ============================================
   异形悬浮卡片词云
   ============================================ */
.wordcloud {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 480px;
}

.cloud-card {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 1.25rem;
  font-weight: 600;
  white-space: nowrap;
  will-change: transform;
  box-shadow: 0 8px 30px rgba(45, 27, 78, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.6);
}

.cloud-card i {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
}

/* 异形卡片变体：不同尺寸与色调 */
.cloud-card--lg {
  font-size: 1.25rem;
  padding: 1rem 1.75rem;
  border-radius: 1.5rem;
}

.cloud-card--sm {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: 1rem;
}

.cloud-card--solid {
  background: linear-gradient(135deg, #6B46C1, #4c1d95);
  color: #FFFFFF;
  border-color: transparent;
}

.cloud-card--glass {
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: #2D1B4E;
}

.cloud-card--tint {
  background: rgba(243, 235, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  color: #4c1d95;
  border-color: rgba(191, 148, 244, 0.3);
}

.cloud-card--outline {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: #6B46C1;
  border: 1.5px solid rgba(107, 70, 193, 0.3);
}

/* 词云装饰圆环 */
.cloud-ring {
  position: absolute;
  border-radius: 50%;
  border: 1.5px dashed rgba(107, 70, 193, 0.2);
  pointer-events: none;
}

/* ---------- 语言切换器 ---------- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem;
  border-radius: 9999px;
  background: rgba(243, 235, 255, 0.5);
  border: 1px solid rgba(191, 148, 244, 0.25);
}

.lang-btn {
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #6E6E73;
  transition: all 0.25s ease;
  cursor: pointer;
}

.lang-btn:hover {
  color: #6B46C1;
}

.lang-btn.lang-active {
  background: #6B46C1;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(107, 70, 193, 0.3);
}

/* ---------- i18n 切换过渡 ---------- */
[data-i18n], [data-i18n-placeholder] {
  transition: opacity 0.3s ease;
}

.lang-switching [data-i18n] {
  opacity: 0.4;
}