@import "tailwindcss";

/* ========== 设计系统 - CSS 变量 ========== */
:root {
  /* 背景色 */
  --bg-primary: #030712;     /* gray-950 */
  --bg-secondary: #111827;   /* gray-900 */
  --bg-tertiary: #1f2937;    /* gray-800 */
  --bg-elevated: #374151;    /* gray-700 */
  /* 边框 */
  --border-primary: #1f2937; /* gray-800 */
  --border-hover: #374151;   /* gray-700 */
  --border-active: rgba(99, 102, 241, 0.5); /* indigo-500/50 */
  /* 强调色 */
  --accent: #6366f1;         /* indigo-500 */
  --accent-hover: #818cf8;   /* indigo-400 */
  --accent-glow: rgba(99, 102, 241, 0.15);
  --accent-subtle: rgba(99, 102, 241, 0.1);
  /* 文字 */
  --text-primary: #f3f4f6;   /* gray-100 */
  --text-secondary: #9ca3af; /* gray-400 */
  --text-muted: #6b7280;     /* gray-500 */
  --text-dim: #4b5563;       /* gray-600 */
  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.15);
  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ========== 全局基础样式 ========== */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
}

/* 文字选中颜色 */
::selection {
  background: rgba(99, 102, 241, 0.3);
  color: #fff;
}

/* 焦点环 */
*:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ========== 滚动条美化 ========== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(75, 85, 99, 0.4);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(107, 114, 128, 0.5);
}

/* ========== 全局过渡动画 ========== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes slideUp {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes slideDown {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.2); }
  50% { box-shadow: 0 0 16px 4px rgba(99, 102, 241, 0.15); }
}
@keyframes breathe {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}
.animate-fade-in { animation: fadeIn 0.3s ease; }
.animate-slide-up { animation: slideUp 0.3s ease; }
.animate-slide-down { animation: slideDown 0.3s ease; }
.animate-float { animation: float 3s ease-in-out infinite; }
.animate-glow { animation: pulse-glow 2s ease-in-out infinite; }
.animate-breathe { animation: breathe 2s ease-in-out infinite; }

/* ========== 卡片悬浮效果 ========== */
.card-hover {
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* ========== Markdown 渲染样式 ========== */
.markdown-body h1 { font-size: 1.5em; font-weight: 700; margin: 1.2em 0 0.6em; color: var(--text-primary); }
.markdown-body h2 { font-size: 1.3em; font-weight: 600; margin: 1em 0 0.5em; color: var(--text-primary); }
.markdown-body h3 { font-size: 1.1em; font-weight: 600; margin: 0.8em 0 0.4em; color: var(--text-primary); }
.markdown-body p { margin: 0.8em 0; line-height: 1.8; }
.markdown-body ul, .markdown-body ol { padding-left: 1.5em; margin: 0.5em 0; }
.markdown-body li { margin: 0.3em 0; line-height: 1.7; }
.markdown-body a {
  color: var(--accent-hover);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast);
}
.markdown-body a:hover {
  border-bottom-color: var(--accent-hover);
}
.markdown-body img {
  border-radius: var(--radius-md);
  max-width: 100%;
  margin: 0.5em 0;
}
.markdown-body code {
  background: rgba(99, 102, 241, 0.1);
  color: #c7d2fe;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}
.markdown-body pre {
  background: #1e1e2e;
  color: #cdd6f4;
  padding: 1em 1.2em;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(99, 102, 241, 0.1);
  overflow-x: auto;
  margin: 0.8em 0;
}
.markdown-body pre code {
  background: none;
  color: inherit;
  padding: 0;
}
.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 0.8em 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.markdown-body th, .markdown-body td {
  border: 1px solid rgba(75, 85, 99, 0.3);
  padding: 0.6em 0.8em;
  text-align: left;
}
.markdown-body th {
  background: rgba(99, 102, 241, 0.08);
  font-weight: 600;
  color: var(--text-primary);
}
.markdown-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 1em;
  margin: 0.8em 0;
  color: var(--text-secondary);
  background: rgba(99, 102, 241, 0.03);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 0.6em 1em;
}
.markdown-body hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--border-primary), transparent);
  margin: 1.5em 0;
}

/* 思考过程折叠样式 */
.markdown-body details {
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.15);
  border-radius: var(--radius-lg);
  padding: 0;
  margin: 0.5em 0 1em;
  overflow: hidden;
}
.markdown-body details summary {
  padding: 0.6em 1em;
  cursor: pointer;
  font-weight: 500;
  color: #a5b4fc;
  user-select: none;
  font-size: 0.85em;
  transition: background var(--transition-fast);
}
.markdown-body details summary:hover {
  background: rgba(99, 102, 241, 0.1);
}
.markdown-body details[open] summary {
  border-bottom: 1px solid rgba(99, 102, 241, 0.12);
  margin-bottom: 0.5em;
}
.markdown-body details > *:not(summary) {
  padding: 0 1em;
  font-size: 0.85em;
  color: #9ca3af;
  line-height: 1.6;
}

/* ========== 通用组件样式 ========== */
/* 输入框统一 */
.input-base {
  background: var(--bg-tertiary);
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input-base::placeholder {
  color: var(--text-dim);
}
.input-base:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* 按钮统一 */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.btn-primary:hover {
  background: #4f46e5;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}
.btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* 标签 badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.5rem;
  font-size: 0.6875rem;
  border-radius: 9999px;
  font-weight: 500;
}