/**
 * 朗慧科技 - Tailwind CSS 自定义样式
 * 基于设计系统: Modern Minimalism + Glassmorphism
 */

/* ============================================
   CSS 变量 - 设计系统令牌
   ============================================ */
:root {
  /* 主色调 */
  --color-primary: #0F172A;
  --color-primary-50: #F1F5F9;
  --color-primary-100: #E2E8F0;
  --color-primary-200: #CBD5E1;
  --color-primary-300: #94A3B8;
  --color-primary-400: #64748B;
  --color-primary-500: #475569;
  --color-primary-600: #334155;
  --color-primary-700: #1E293B;
  --color-primary-800: #0F172A;
  --color-primary-900: #020617;

  /* 强调色 */
  --color-accent: #0369A1;
  --color-accent-light: #0EA5E9;
  --color-accent-dark: #075985;

  /* 背景色 */
  --color-background: #F8FAFC;
  --color-background-alt: #FFFFFF;
  --color-foreground: #020617;

  /* 辅助色 */
  --color-muted: #E8ECF1;
  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  /* 状态色 */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #DC2626;
  --color-info: #3B82F6;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* 玻璃态效果 */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-bg-dark: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(12px);

  /* 动画时间 */
  --duration-fast: 150ms;
  --duration-normal: 200ms;
  --duration-slow: 300ms;
  --duration-slower: 500ms;

  /* 缓动函数 */
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
}

/* ============================================
   基础重置
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-foreground);
  background-color: var(--color-background);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   玻璃态组件
   ============================================ */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

.glass-dark {
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   按钮组件
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-out);
  cursor: pointer;
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  color: white;
  box-shadow: 0 4px 14px 0 rgba(3, 105, 161, 0.39);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(3, 105, 161, 0.23);
}

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

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary-600);
}

.btn-ghost:hover {
  background: var(--color-primary-50);
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: 0.75rem;
}

/* ============================================
   卡片组件
   ============================================ */
.card {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-out);
  overflow: hidden;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  transition: all var(--duration-normal) var(--ease-out);
}

.card-glass:hover {
  background: rgba(255, 255, 255, 0.85);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   表单组件
   ============================================ */
.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: 0.875rem;
  color: var(--color-foreground);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-out);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(3, 105, 161, 0.1);
}

.form-input::placeholder {
  color: var(--color-primary-400);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-700);
}

.form-group {
  margin-bottom: var(--space-4);
}

/* ============================================
   导航组件
   ============================================ */
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary-600);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
  color: var(--color-accent);
  background: var(--color-primary-50);
}

.nav-link.active {
  color: var(--color-accent);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

/* ============================================
   动画效果
   ============================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  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);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.animate-fadeIn { animation: fadeIn var(--duration-slow) var(--ease-out) forwards; }
.animate-fadeInUp { animation: fadeInUp var(--duration-slow) var(--ease-out) forwards; }
.animate-fadeInDown { animation: fadeInDown var(--duration-slow) var(--ease-out) forwards; }
.animate-slideInLeft { animation: slideInLeft var(--duration-slow) var(--ease-out) forwards; }
.animate-slideInRight { animation: slideInRight var(--duration-slow) var(--ease-out) forwards; }
.animate-scaleIn { animation: scaleIn var(--duration-slow) var(--ease-out) forwards; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }
.animate-spin { animation: spin 1s linear infinite; }

/* 交错动画延迟 */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }

/* ============================================
   滚动显示动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

.reveal-scale {
  opacity: 0;
  transform: scale(0.95);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* ============================================
   工具类
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* 文本截断 */
.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-3 {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 装饰性元素 */
.dot-pattern {
  background-image: radial-gradient(circle, var(--color-primary-300) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* ============================================
   响应式工具
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* 打印样式 */
@media print {
  .no-print {
    display: none !important;
  }
}