/* ===================================
   灵犀 AI - 公共样式
   =================================== */

/* CSS 变量 */
:root {
  --color-primary: #6366F1;
  --color-secondary: #8B5CF6;
  --color-accent: #06B6D4;
  --color-glow: rgba(99, 102, 241, 0.4);
  --color-dark: #0A0A0F;
  --color-bg: #0A0A0F;
  --color-bg-2: #13131F;
  --color-card: #161623;
  --color-card-hover: #1E1E30;
  --color-text: #F0F0F5;
  --color-text-muted: #8892A6;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-success: #10B981;
  --color-danger: #EF4444;

  --gradient-brand: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #06B6D4 100%);
  --gradient-dark: linear-gradient(180deg, #0A0A0F 0%, #13131F 100%);
  --gradient-glow: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.25);

  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;

  --nav-height: 64px;
  --sidebar-width: 280px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

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

img, svg {
  display: block;
  max-width: 100%;
}

ul, ol {
  list-style: none;
}

/* 滚动条 */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* 通用按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  user-select: none;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

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

.btn-ghost {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-border-hover);
}

/* 通用容器 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 文字渐变 */
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* 动画关键帧 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.85; }
}

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

@keyframes blink {
  0%, 90%, 100% { transform: scaleY(1); }
  95% { transform: scaleY(0.1); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 40px rgba(99, 102, 241, 0.25); }
  50% { box-shadow: 0 0 60px rgba(99, 102, 241, 0.5); }
}

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

@keyframes particleFloat {
  0% {
    transform: translateY(0) translateX(0) scale(1);
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  100% {
    transform: translateY(-60px) translateX(var(--tx, 20px)) scale(0);
    opacity: 0;
  }
}

@keyframes sparkle {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* 渐入工具类 */
.fade-in-up {
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.fade-in {
  animation: fadeIn 0.6s ease forwards;
}

/* 响应式 */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }
  .container {
    padding: 0 16px;
  }
  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }
}