/* ========================================
   投研报告库 - 极简风格（参考 Apple 设计）
   ======================================== */

/* CSS 变量定义 */
:root {
  --color-bg: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-border: #d2d2d7;
  --color-primary: #0071e3;
  --color-primary-hover: #0062c4;
  --color-hover-bg: #f0f0f2;
  --color-tag-bg: #e8e8ed;
  --color-tag-text: #424245;
  --color-tag-hover-bg: #d8d8dc;
  --color-code-bg: #f5f5f7;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", monospace;
}

/* 全局重置 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button {
  font-family: inherit;
}

/* ========================================
   顶部导航栏
   ======================================== */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.topbar-inner {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-brand {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.topbar-domain {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* ========================================
   主容器
   ======================================== */
.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

/* ========================================
   搜索区域
   ======================================== */
.search-section {
  margin-bottom: 24px;
}

.page-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.page-subtitle {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.search-box {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 14px;
  color: var(--color-text-secondary);
  pointer-events: none;
}

.search-input {
  width: 100%;
  height: 44px;
  padding: 0 16px 0 44px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  font-size: 15px;
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input::placeholder {
  color: var(--color-text-secondary);
}

.search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

/* ========================================
   标签筛选区
   ======================================== */
.tags-section {
  margin-bottom: 24px;
}

.tags-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ========================================
   标签样式
   ======================================== */
.tag {
  display: inline-flex;
  align-items: center;
  border: none;
  background: var(--color-tag-bg);
  color: var(--color-tag-text);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
  font-family: var(--font-family);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  line-height: 1.6;
}

.tag:hover {
  background: var(--color-tag-hover-bg);
}

.tag.active {
  background: var(--color-primary);
  color: #fff;
}

.tag.active:hover {
  background: var(--color-primary-hover);
}

/* 标签筛选区的"全部"按钮 */
.tag-all {
  font-weight: 500;
}

/* ========================================
   报告列表
   ======================================== */
.reports-section {
  margin-bottom: 32px;
}

.report-list {
  list-style: none;
}

.report-item {
  padding: 16px 12px;
  border-bottom: 1px solid var(--color-border);
  margin: 0 -12px;
  border-radius: 8px;
  transition: background 0.15s;
}

.report-item:hover {
  background: var(--color-hover-bg);
}

.report-main {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.report-title {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  cursor: pointer;
  line-height: 1.4;
  transition: color 0.15s;
}

.report-item:hover .report-title {
  color: var(--color-primary);
}

.report-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.report-date {
  font-size: 12px;
  color: var(--color-text-secondary);
}

/* 列表中的小标签 */
.report-meta .tag {
  font-size: 12px;
}

/* ========================================
   空状态
   ======================================== */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-secondary);
}

.empty-icon {
  margin-bottom: 16px;
  color: var(--color-border);
}

.empty-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.empty-desc {
  font-size: 14px;
}

/* ========================================
   分页
   ======================================== */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.pagination-total {
  font-size: 13px;
  color: var(--color-text-secondary);
  margin-right: 12px;
}

.page-btn {
  min-width: 32px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  border-radius: 6px;
  font-size: 13px;
  font-family: var(--font-family);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-btn:hover {
  background: var(--color-hover-bg);
}

.page-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.page-btn.active:hover {
  background: var(--color-primary-hover);
}

/* ========================================
   Markdown 阅读页
   ======================================== */
.md-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg);
  z-index: 1000;
  overflow-y: auto;
}

.md-overlay-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--color-border);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  z-index: 10;
}

.md-back-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  border: none;
  background: none;
  color: var(--color-primary);
  font-size: 14px;
  font-family: var(--font-family);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 6px;
  transition: background 0.15s;
}

.md-back-btn:hover {
  background: var(--color-hover-bg);
}

.md-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.md-body {
  max-width: 760px;
  margin: 0 auto;
  padding: 32px 20px 80px;
}

/* Markdown 内容样式 */
.md-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text);
  word-wrap: break-word;
}

.md-content h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 32px 0 16px;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

.md-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 28px 0 14px;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.md-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  line-height: 1.3;
}

.md-content h4,
.md-content h5,
.md-content h6 {
  font-size: 16px;
  font-weight: 600;
  margin: 20px 0 10px;
}

.md-content p {
  margin: 12px 0;
}

.md-content ul,
.md-content ol {
  margin: 12px 0;
  padding-left: 24px;
}

.md-content li {
  margin: 6px 0;
}

.md-content code {
  font-family: var(--font-mono);
  font-size: 14px;
  background: var(--color-tag-bg);
  padding: 2px 6px;
  border-radius: 4px;
}

.md-content pre {
  background: var(--color-code-bg);
  padding: 16px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 16px 0;
}

.md-content pre code {
  background: none;
  padding: 0;
  font-size: 14px;
  line-height: 1.6;
}

.md-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: 16px;
  margin: 16px 0;
  color: var(--color-text-secondary);
}

.md-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  display: block;
  overflow-x: auto;
}

.md-content th,
.md-content td {
  border: 1px solid var(--color-border);
  padding: 8px 12px;
  text-align: left;
}

.md-content th {
  background: var(--color-hover-bg);
  font-weight: 600;
}

.md-content a {
  color: var(--color-primary);
  text-decoration: none;
}

.md-content a:hover {
  text-decoration: underline;
}

.md-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
}

.md-content hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 24px 0;
}

/* ========================================
   底部
   ======================================== */
.footer {
  text-align: center;
  padding: 24px 20px;
  font-size: 12px;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
}

/* ========================================
   响应式：移动端
   ======================================== */
@media (max-width: 640px) {
  .container {
    padding: 20px 16px 60px;
  }

  .topbar-inner {
    padding: 0 16px;
  }

  .page-title {
    font-size: 24px;
  }

  .md-overlay-header {
    padding: 10px 16px;
  }

  .md-body {
    padding: 20px 16px 60px;
  }

  .md-content {
    font-size: 15px;
  }

  .md-content h1 {
    font-size: 24px;
  }

  .md-content h2 {
    font-size: 20px;
  }

  .report-item {
    padding: 14px 8px;
    margin: 0 -8px;
  }

  .pagination {
    gap: 4px;
  }

  .page-btn {
    min-width: 28px;
    height: 28px;
    padding: 0 8px;
    font-size: 12px;
  }
}