/* ==========================================================================
   shadcn/ui 风格单色系设计 (Zinc Minimal Monochrome)
   无大圆角、无花哨渐变、纯净黑白灰微对比、严谨精致的设计语言
   ========================================================================== */

:root {
  --background: #ffffff;
  --foreground: #09090b;
  --muted: #71717a;
  --muted-bg: #f4f4f5;
  --border: #e4e4e7;
  --border-hover: #a1a1aa;
  --primary: #18181b;
  --primary-foreground: #fafafa;
  --primary-hover: #27272a;
  --card: #ffffff;
  --danger: #ef4444;
  --danger-bg: #fef2f2;

  /* 严谨小圆角规范 (禁止大圆角与药丸形) */
  --radius-sm: 4px;
  --radius: 6px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.08), 0 1px 2px -1px rgba(0, 0, 0, 0.08);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: #fafafa;
  color: var(--foreground);
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
}

button,
input {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

/* ==========================================================================
   极简登录验证屏幕 (不暴露平台属性，纯黑白精简门禁)
   ========================================================================== */
.auth-screen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: #fafafa;
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.auth-card {
  width: 100%;
  max-width: 340px;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 28px 24px;
}

.auth-header {
  margin-bottom: 20px;
}

.auth-title {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--foreground);
  margin: 0 0 4px;
}

.auth-desc {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.input {
  width: 100%;
  height: 38px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: #ffffff;
  padding: 0 36px 0 12px;
  font-size: 13px;
  color: var(--foreground);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.input:focus {
  border-color: var(--foreground);
  box-shadow: 0 0 0 1px var(--foreground);
}

.input::placeholder {
  color: #a1a1aa;
}

.input-toggle-btn {
  position: absolute;
  right: 6px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 16px;
}

.input-toggle-btn:hover {
  color: var(--foreground);
}

.remember-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  margin: 2px 0;
}

.remember-label input[type="checkbox"] {
  accent-color: var(--primary);
  width: 14px;
  height: 14px;
  margin: 0;
  cursor: pointer;
  border-radius: 2px;
}

.auth-error {
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  background: var(--danger-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--danger);
  font-size: 12px;
}

/* ==========================================================================
   按钮系统 (shadcn/ui 按钮规范)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
  transition: all 0.15s ease;
  cursor: pointer;
  border: 1px solid transparent;
  padding: 0 14px;
  height: 38px;
  gap: 6px;
  white-space: nowrap;
  user-select: none;
}

.btn:active:not(:disabled) {
  transform: scale(0.985);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-sm {
  height: 32px;
  padding: 0 10px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

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

.btn-outline {
  background: #ffffff;
  border-color: var(--border);
  color: var(--foreground);
}

.btn-outline:hover {
  background: var(--muted-bg);
  border-color: var(--border-hover);
}

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

.btn-ghost:hover {
  background: var(--muted-bg);
  color: var(--foreground);
}

.w-full {
  width: 100%;
}

/* ==========================================================================
   主内容容器
   ========================================================================== */
.container {
  max-width: 820px;
  margin: 0 auto;
  padding: 16px;
  padding-top: max(16px, env(safe-area-inset-top));
  padding-bottom: max(32px, env(safe-area-inset-bottom));
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding: 10px 0 14px;
  margin-bottom: 16px;
}

.top-brand {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--foreground);
}

/* 搜索栏与过滤区 */
.search-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.search-form {
  display: flex;
  gap: 6px;
}

.search-input-wrap {
  flex: 1;
}

.search-btn {
  background: var(--primary);
  color: var(--primary-foreground);
  border-radius: var(--radius);
  padding: 0 16px;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}

.search-btn:hover {
  background: var(--primary-hover);
}

/* 分类小方角标签 (严格无大药丸，shadcn 徽章风) */
.tab-filter {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 4px 0 6px;
  flex-wrap: wrap;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.tab-filter::-webkit-scrollbar {
  display: none;
}

.tab-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 5px 11px;
  font-size: 12px;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: all 0.15s ease;
}

.tab-item:hover {
  border-color: var(--border-hover);
  color: var(--foreground);
}

.tab-item.active {
  background: var(--primary);
  color: var(--primary-foreground);
  border-color: var(--primary);
}

/* 提示与状态条 (默认全部隐藏，仅在 JS 主动展示时由 inline style 控制) */
.status-msg {
  display: none;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: 12px;
  margin-bottom: 10px;
  border: 1px solid transparent;
}

.status-msg.error {
  background: var(--danger-bg);
  border-color: rgba(239, 68, 68, 0.2);
  color: var(--danger);
}

.status-msg.loading {
  background: var(--muted-bg);
  border-color: var(--border);
  color: var(--muted);
  align-items: center;
  gap: 6px;
}

.no-results {
  text-align: center;
  padding: 36px 16px;
  color: var(--muted);
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 13px;
}

/* ==========================================================================
   资源卡片列表（shadcn 矩形极简卡片）
   ========================================================================== */
.results-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 18px;
}

@media (min-width: 680px) {
  .results-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

.result-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.15s ease, background 0.15s ease;
}

.result-card:hover {
  border-color: var(--border-hover);
}

.result-card:active {
  background: #fafafa;
}

.card-img {
  width: 86px;
  height: 86px;
  border-radius: var(--radius);
  background-size: cover;
  background-position: center;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--border);
  background-color: var(--muted-bg);
}

.card-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-title {
  font-size: 14px;
  font-weight: 600;
  margin: 0;
  color: var(--foreground);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-subtitle {
  font-size: 12px;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 2px;
}

.tag-badge {
  display: inline-block;
  background: var(--muted-bg);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: #3f3f46;
}

.card-meta {
  font-size: 11px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 4px;
}

/* 分页器 */
.pagination {
  display: flex;
  gap: 6px;
  align-items: center;
  justify-content: center;
  margin: 16px 0;
}

.page-info {
  font-size: 12px;
  color: var(--muted);
  padding: 0 6px;
}

/* ==========================================================================
   全屏详情页 (全屏展开，非抽屉非弹窗)
   ========================================================================== */
.detail-fullscreen {
  display: none;
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100vh;
  background: #ffffff;
  z-index: 1200;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.detail-nav {
  height: 50px;
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: #ffffff;
  z-index: 10;
  padding-top: env(safe-area-inset-top);
}

.detail-nav-title {
  flex: 1;
  font-size: 14px;
  font-weight: 600;
  color: var(--foreground);
  margin: 0 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: center;
}

.detail-nav-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.detail-body {
  max-width: 820px;
  margin: 0 auto;
  padding: 16px;
  padding-bottom: calc(36px + env(safe-area-inset-bottom));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.detail-cover-img {
  width: 100%;
  max-height: 260px;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 1px solid var(--border);
  background: var(--muted-bg);
}

.detail-section-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: #ffffff;
  padding: 14px;
}

.detail-section-heading {
  font-size: 13px;
  font-weight: 600;
  color: var(--foreground);
  margin: 0 0 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}

.detail-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 8px;
  font-size: 12px;
  color: #52525b;
}

.detail-meta-grid span strong {
  color: var(--foreground);
}

/* 附件下载列表 */
.attachment-container {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.attachment-row {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #ffffff;
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.attachment-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--foreground);
  word-break: break-all;
}

.attachment-size {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}

.attachment-btns {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.detail-article {
  font-size: 13px;
  line-height: 1.7;
  color: #27272a;
  word-break: break-word;
}

.detail-article img {
  max-width: 100%;
  height: auto;
  margin: 12px auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.detail-article video {
  max-width: 100%;
  height: auto;
  margin: 12px auto;
  border-radius: var(--radius);
  background: #000;
}

/* Toast 提示 (shadcn 纯黑微矩形) */
.toast {
  position: fixed;
  bottom: calc(20px + env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 3000;
  background: #18181b;
  color: #fafafa;
  padding: 8px 16px;
  border-radius: var(--radius);
  font-size: 12px;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: 1px solid #27272a;
  white-space: nowrap;
  pointer-events: none;
  animation: toastIn 0.15s ease;
}

.toast.hidden {
  display: none;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translate(-50%, 8px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

.spin {
  display: inline-block;
  animation: spin 0.8s linear infinite;
}

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

.hidden {
  display: none !important;
}