/* ============================
   CSS 设计令牌 - 多主题系统
   ============================ */
:root {
  --primary-50: 245 243 255;
  --primary-100: 237 233 254;
  --primary-200: 221 214 254;
  --primary-300: 196 181 253;
  --primary-400: 167 139 250;
  --primary-500: 139 95 191;
  --primary-600: 124 58 237;
  --primary-700: 109 40 217;

  --bg-100: 245 243 247;
  --bg-200: 248 245 255;
  --bg-300: 240 235 255;
  --bg-400: 255 255 255;

  --text-100: #1a1a2e;
  --text-200: #4b5563;
  --text-300: #9ca3af;

  --border-100: #e5e7eb;
  --border-200: #d1d5db;

  --sidebar-bg: #ffffff;
  --sidebar-width: 16rem;

  --shadow-soft: 0 4px 24px rgba(139, 95, 191, 0.08);
  --shadow-card: 0 2px 8px rgba(0,0,0,0.06), 0 0 0 1px rgba(0,0,0,0.04);
}

/* 暗金主题 */
[data-theme="darkGold"] {
  --bg-100: 15 14 10;
  --bg-200: 28 25 18;
  --bg-300: 40 35 22;
  --bg-400: 20 18 12;
  --text-100: #fef3c7;
  --text-200: #d4a843;
  --text-300: #92773a;
  --border-100: #3d3420;
  --border-200: #4a4020;
  --primary-500: 212 168 67;
  --primary-400: 245 200 100;
  --sidebar-bg: #16130d;
}

/* 花朵光晕主题 */
[data-theme="bloomGlow"] {
  --bg-100: 253 244 248;
  --bg-200: 255 245 250;
  --bg-300: 252 235 245;
  --bg-400: 255 255 255;
  --text-100: #2d1b2e;
  --text-200: #8b5c7e;
  --text-300: #c9a0b8;
  --border-100: #f3dce8;
  --border-200: #ecc4d8;
  --primary-500: 236 72 153;
  --primary-400: 244 114 182;
  --sidebar-bg: #fff5fa;
}

/* 暖光主题 */
[data-theme="warmLit"] {
  --bg-100: 255 251 245;
  --bg-200: 255 245 235;
  --bg-300: 255 235 215;
  --bg-400: 255 255 255;
  --text-100: #2d1f14;
  --text-200: #8b6914;
  --text-300: #c9a05c;
  --border-100: #f5e6d0;
  --border-200: #eccbb0;
  --primary-500: 234 88 12;
  --primary-400: 249 115 22;
  --sidebar-bg: #fffaf0;
}

/* 学者蓝主题 */
[data-theme="scholarBlue"] {
  --bg-100: 240 244 255;
  --bg-200: 235 242 255;
  --bg-300: 224 235 255;
  --bg-400: 255 255 255;
  --text-100: #1a1a3e;
  --text-200: #3b5b9e;
  --text-300: #7a9bc7;
  --border-100: #d4e0f5;
  --border-200: #bccceb;
  --primary-500: 37 99 235;
  --primary-400: 59 130 246;
  --sidebar-bg: #f0f6ff;
}

/* ============================
   基础样式
   ============================ */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  background-color: rgb(var(--bg-100));
  color: var(--text-100);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ============================
   滚动条样式
   ============================ */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  border-radius: 9999px;
  background-color: rgba(139, 95, 191, 0.25);
}
::-webkit-scrollbar-thumb:hover {
  background-color: rgba(139, 95, 191, 0.45);
}

/* ============================
   页面过渡动画
   ============================ */
.page-enter-active,
.page-leave-active {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.page-enter-from {
  opacity: 0;
  transform: translateY(8px);
}
.page-leave-to {
  opacity: 0;
  transform: translateY(-8px);
}

/* ============================
   下拉菜单动画
   ============================ */
.dropdown-enter-active,
.dropdown-leave-active {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.dropdown-enter-from,
.dropdown-leave-to {
  opacity: 0;
  transform: translateY(-8px) scale(0.95);
}

/* ============================
   骨架屏动画
   ============================ */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, #f3f4f6 25%, #e5e7eb 50%, #f3f4f6 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite linear;
  border-radius: 6px;
}

/* ============================
   卡片通用样式
   ============================ */
.card-hover {
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(139, 95, 191, 0.15);
}

/* ============================
   渐变文字
   ============================ */
.gradient-text {
  background: linear-gradient(135deg, rgb(var(--primary-500)), rgb(var(--primary-300)));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ============================
   流体blob动画
   ============================ */
@keyframes fluid-blob {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -50px) scale(1.1); }
  66% { transform: translate(-20px, 20px) scale(0.9); }
}

.animate-fluid-blob {
  animation: fluid-blob 20s infinite alternate cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================
   按钮基础样式
   ============================ */
.btn-primary {
  background: linear-gradient(135deg, rgb(var(--primary-500)), rgb(var(--primary-600)));
  color: white;
  border: none;
  border-radius: 10px;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}
.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(139, 95, 191, 0.35);
}

.btn-secondary {
  background: rgb(var(--bg-200));
  color: var(--text-200);
  border: 1px solid var(--border-100);
  border-radius: 10px;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}
.btn-secondary:hover {
  background: rgb(var(--bg-300));
  border-color: rgba(var(--primary-500), 0.3);
}

/* ============================
   侧边栏
   ============================ */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border-100);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 50;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.625rem 0.75rem;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-200);
  text-decoration: none;
  margin: 0 0.5rem;
}

.nav-item:hover {
  background: rgb(var(--primary-50) / 0.6);
  color: rgb(var(--primary-600));
}

.nav-item.active {
  background: rgb(var(--primary-100));
  color: rgb(var(--primary-700));
}

.nav-item.active svg {
  color: rgb(var(--primary-600));
}

/* ============================
   主内容区
   ============================ */
.main-layout {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

@media (min-width: 768px) {
  .main-content {
    margin-left: var(--sidebar-width);
  }
}

/* ============================
   顶部 Header
   ============================ */
.top-header {
  height: 64px;
  background: white;
  border-bottom: 1px solid var(--border-100);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 40;
  flex-shrink: 0;
}

/* ============================
   内容容器
   ============================ */
.content-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}

/* ============================
   标签/徽章
   ============================ */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.125rem 0.625rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-primary {
  background: rgb(var(--primary-100));
  color: rgb(var(--primary-700));
}

.badge-success {
  background: #d1fae5;
  color: #065f46;
}

/* ============================
   表单元素
   ============================ */
.form-input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border-100);
  border-radius: 10px;
  font-size: 0.875rem;
  background: white;
  color: var(--text-100);
  transition: all 0.15s ease;
  outline: none;
}

.form-input:focus {
  border-color: rgb(var(--primary-400));
  box-shadow: 0 0 0 3px rgba(var(--primary-500), 0.1);
}

/* ============================
   模态框基础
   ============================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-box {
  background: white;
  border-radius: 24px;
  padding: 2rem;
  width: 90%;
  max-width: 480px;
  box-shadow: 0 25px 60px rgba(0,0,0,0.2);
}

/* ============================
   空状态
   ============================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 2rem;
  color: var(--text-300);
  text-align: center;
}