:root {
  /* 全新现代主题色彩 */
  --primary-color: #6c5ce7;
  --secondary-color: #a29bfe;
  --accent-color: #fd79a8;
  --complement-color: #00cec9;
  --dark-color: #2d3436;
  --light-color: #f7f7f7;
  --success-color: #00b894;
  --warning-color: #fdcb6e;
  --danger-color: #e17055;
  --info-color: #0984e3;
  --text-primary: #2d3436;
  --text-secondary: #636e72;
  --text-light: #f7f7f7;
  --bg-primary: #ffffff;
  --bg-secondary: #f1f2f6;
  --bg-tertiary: #dfe6e9;
  --border-color: rgba(0, 0, 0, 0.1);
  --card-bg: rgba(255, 255, 255, 0.95);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 15px 30px rgba(0, 0, 0, 0.15);
  --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --gradient-secondary: linear-gradient(135deg, var(--accent-color), var(--complement-color));
  --gradient-tertiary: linear-gradient(135deg, var(--complement-color), var(--primary-color));
  --border-radius-small: 8px;
  --border-radius-medium: 12px;
  --border-radius-large: 16px;
}

/* 基础样式重置 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', 'Segoe UI', sans-serif;
  background: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 按钮样式 */
.modern-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  background: var(--gradient-primary);
  color: var(--text-light);
  border: none;
  border-radius: var(--border-radius-small);
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow);
  z-index: 1;
}

.modern-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-secondary);
  z-index: -1;
  opacity: 0;
  transition: var(--transition);
}

.modern-button:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.modern-button:hover::before {
  opacity: 1;
}

.modern-button:active {
  transform: translateY(-1px);
}

.modern-button.secondary {
  background: var(--gradient-secondary);
}

.modern-button.secondary::before {
  background: var(--gradient-tertiary);
}

.modern-button.small {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.modern-button.large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

/* 卡片样式 */
.modern-card {
  background: var(--card-bg);
  border-radius: var(--border-radius-medium);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
  box-shadow: var(--shadow);
  z-index: 1;
}

.modern-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

/* 标题样式 */
.modern-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  position: relative;
  display: inline-block;
  margin-bottom: 20px;
}

.modern-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 50px;
  height: 3px;
  background: var(--gradient-primary);
  border-radius: 3px;
}

/* 动画关键帧 */
@keyframes float {
  0% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-15px);
  }
  100% {
    transform: translateY(0px);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 动画类 */
.float-animation {
  animation: float 4s ease-in-out infinite;
}

.pulse-animation {
  animation: pulse 2s ease-in-out infinite;
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.slide-in-left {
  animation: slideInLeft 0.6s ease-out forwards;
}

.slide-in-right {
  animation: slideInRight 0.6s ease-out forwards;
}

/* 网格布局 */
.modern-grid {
  display: grid;
  gap: 25px;
}

/* 加载动画 */
.modern-loader {
  width: 48px;
  height: 48px;
  border: 5px solid rgba(108, 92, 231, 0.3);
  border-radius: 50%;
  display: inline-block;
  position: relative;
  box-sizing: border-box;
  animation: rotation 1s linear infinite;
}

.modern-loader::after {
  content: '';
  box-sizing: border-box;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 5px solid transparent;
  border-bottom-color: var(--primary-color);
  animation: rotation 0.5s linear infinite reverse;
}

@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .modern-grid {
    gap: 15px;
  }
  
  .modern-title {
    font-size: 1.5rem;
  }
  
  .modern-button {
    padding: 10px 20px;
    font-size: 0.875rem;
  }
}