/* Medical Q&A Mini-Program - Mobile-first Style */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --primary: #1a73e8;
  --primary-light: #e8f0fe;
  --primary-dark: #1557b0;
  --success: #34a853;
  --warning: #fbbc04;
  --danger: #ea4335;
  --bg: #f0f2f5;
  --card-bg: #ffffff;
  --text: #1f1f1f;
  --text-secondary: #5f6368;
  --border: #dadce0;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 480px;
}

html, body { height: 100%; overflow: hidden; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
}

#app {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  position: relative;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  padding: 16px 20px 12px;
  text-align: center;
  flex-shrink: 0;
}
.header-title { font-size: 18px; font-weight: 600; letter-spacing: 1px; }
.header-subtitle { font-size: 11px; opacity: 0.8; margin-top: 2px; }

/* Tab Bar */
.tab-bar {
  display: flex;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.tab-item {
  flex: 1;
  text-align: center;
  padding: 10px 0;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
  user-select: none;
}
.tab-item.active { color: var(--primary); border-bottom: 2px solid var(--primary); font-weight: 500; }
.tab-icon { font-size: 16px; display: block; margin-bottom: 2px; }
.tab-item span { display: block; font-size: 11px; }

/* Panels */
.panel { flex: 1; overflow: hidden; display: flex; flex-direction: column; }
.panel.hidden { display: none; }

/* Generic hidden utility */
.hidden { display: none !important; }

/* Q&A Panel */
.qa-chat {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  scroll-behavior: smooth;
}

.message {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  animation: fadeIn 0.3s ease;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

.message-user { flex-direction: row-reverse; }
.message-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  background: var(--primary-light);
}
.message-user .message-avatar { background: #e8f5e9; }
.message-content { max-width: 80%; }
.message-sender { font-size: 11px; color: var(--text-secondary); margin-bottom: 4px; }
.message-user .message-sender { text-align: right; }
.message-text {
  background: var(--card-bg);
  padding: 10px 14px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 14px;
  line-height: 1.6;
}
.message-system .message-text { background: #f8f9fa; }
.message-user .message-text { background: var(--primary-light); }

.message-text p { margin-bottom: 6px; }
.message-text strong { color: var(--primary); }
.message-text hr { margin: 8px 0; border: none; border-top: 1px solid var(--border); }

/* Suggestions */
.suggestions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.suggestion-chip {
  background: var(--primary-light);
  color: var(--primary);
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
  border: 1px solid transparent;
}
.suggestion-chip:hover { border-color: var(--primary); }
.suggestion-chip:active { background: #d2e3fc; }

/* Source tags */
.source-tags { display: flex; flex-wrap: wrap; gap: 4px; margin: 8px 0 4px; }
.source-tag {
  background: #e8f5e9;
  color: #2e7d32;
  padding: 2px 8px;
  border-radius: 10px;
  font-size: 11px;
}

/* Q&A Input */
.qa-input-area {
  padding: 10px 16px 16px;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.qa-input-wrapper {
  display: flex;
  gap: 8px;
  align-items: center;
}
.qa-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: 24px;
  outline: none;
  font-size: 14px;
  transition: border-color 0.2s;
}
.qa-input:focus { border-color: var(--primary); }
.qa-send-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 24px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.qa-send-btn:active { background: var(--primary-dark); }
.qa-send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Browse Panel */
.browse-header {
  padding: 10px 16px;
  display: flex;
  gap: 8px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.kb-select {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}
.search-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 13px;
  outline: none;
}
.search-input:focus { border-color: var(--primary); }

.browse-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 16px;
}
.browse-item {
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 8px;
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: all 0.2s;
}
.browse-item:hover { box-shadow: 0 2px 8px rgba(0,0,0,0.1); }
.browse-item:active { transform: scale(0.98); }
.browse-item-name { font-weight: 500; font-size: 15px; color: var(--primary); margin-bottom: 4px; }
.browse-item-preview { font-size: 12px; color: var(--text-secondary); overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }

.browse-placeholder {
  text-align: center;
  color: var(--text-secondary);
  padding: 40px 20px;
  font-size: 14px;
}

.browse-pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.page-btn {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 13px;
  transition: all 0.2s;
}
.page-btn:hover { border-color: var(--primary); color: var(--primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
#page-info { font-size: 12px; color: var(--text-secondary); }

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.modal-content {
  background: var(--card-bg);
  border-radius: var(--radius);
  max-width: 500px;
  width: 100%;
  max-height: 80vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 32px rgba(0,0,0,0.2);
}
.modal-wide { max-width: 700px; }
.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.modal-title { font-size: 16px; font-weight: 600; }
.modal-close {
  width: 28px; height: 28px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}
.modal-close:hover { background: #f0f0f0; }
.modal-body {
  padding: 16px 18px;
  overflow-y: auto;
  flex: 1;
}
.modal-footer {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* Detail view */
.detail-field {
  margin-bottom: 14px;
}
.detail-field-label {
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.detail-field-value {
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Edit form */
.form-field {
  margin-bottom: 12px;
}
.form-field label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
  font-weight: 500;
}
.form-field .required::after { content: " *"; color: var(--danger); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}
.form-field input:focus, .form-field textarea:focus { border-color: var(--primary); }
.form-field textarea { min-height: 80px; resize: vertical; }

/* Admin Panel */
.admin-login {
  max-width: 320px;
  margin: 40px auto;
  text-align: center;
  padding: 24px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.admin-login h3 { margin-bottom: 16px; font-size: 16px; }
.admin-input {
  width: 100%;
  padding: 10px 14px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
}
.admin-input:focus { border-color: var(--primary); }
.admin-btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
  width: 100%;
}
.admin-btn:hover { background: var(--primary-dark); }
.admin-btn.small { padding: 6px 12px; font-size: 12px; width: auto; }
.admin-btn.danger { background: var(--danger); }
.admin-btn.danger:hover { background: #d93025; }
.admin-btn.secondary { background: #f1f3f4; color: var(--text); }
.admin-btn.secondary:hover { background: #e8eaed; }
.admin-error { color: var(--danger); font-size: 12px; margin-top: 8px; }

.admin-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.admin-header h3 { font-size: 14px; flex: 1; }
.admin-controls {
  display: flex;
  gap: 8px;
  padding: 8px 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.admin-toolbar {
  padding: 8px 16px;
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.admin-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 16px;
}

.admin-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--card-bg);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
  box-shadow: var(--shadow);
}
.admin-item-info { flex: 1; min-width: 0; }
.admin-item-name { font-size: 14px; font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-item-actions { display: flex; gap: 6px; flex-shrink: 0; }
.admin-action-btn {
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card-bg);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
}
.admin-action-btn:hover { border-color: var(--primary); color: var(--primary); }
.admin-action-btn.edit:hover { border-color: var(--primary); color: var(--primary); }
.admin-action-btn.delete:hover { border-color: var(--danger); color: var(--danger); }

/* Toast */
.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  background: #323232;
  color: white;
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 13px;
  z-index: 2000;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
  transition: all 0.3s;
  max-width: 80%;
  text-align: center;
}
.toast.hidden { opacity: 0; transform: translateX(-50%) translateY(20px); pointer-events: none; }

/* Loading dots */
.loading-dots::after {
  content: "...";
  animation: dots 1.5s steps(4, end) infinite;
}
@keyframes dots { 0%, 20% { content: ""; } 40% { content: "."; } 60% { content: ".."; } 80%, 100% { content: "..."; } }

/* Scrollbar */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 2px; }

.modal-overlay.hidden { display: none; }

/* Hidden utility */
.modal-overlay.hidden { display: none; }

.browse-item-kb{display:inline-block;background:#e8f0fe;color:#1a73e8;padding:2px 8px;border-radius:10px;font-size:11px;margin-bottom:4px}

.admin-link{color:rgba(255,255,255,0.7);font-size:11px;position:absolute;top:14px;right:16px;text-decoration:none}.admin-link:hover{color:#fff}
/* ICP Footer - fixed at bottom of viewport */
.icp-footer {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: var(--max-width);
  text-align: center;
  padding: 8px 16px;
  background: var(--card-bg);
  border-top: 1px solid var(--border);
  z-index: 999;
}


/* Reserve space for fixed footer */
#app {
  padding-bottom: 35px;
}
.icp-number {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.icp-link {
  font-size: 12px;
  line-height: 1.6;
}
.icp-link a {
  color: var(--text-secondary);
  text-decoration: none;
}
.icp-link a:hover {
  color: var(--primary);
  text-decoration: underline;
}
/* Login overlay for QA page */
.login-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
}
.login-overlay.hidden {
  display: none;
}
.login-box {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 32px 24px;
  max-width: 340px;
  width: 90%;
  text-align: center;
  box-shadow: var(--shadow);
}
.login-box-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 4px;
}
.login-box-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.login-input {
  width: 100%;
  padding: 10px 14px;
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  outline: none;
  box-sizing: border-box;
}
.login-input:focus {
  border-color: var(--primary);
}
.login-btn {
  width: 100%;
  padding: 10px;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.2s;
}
.login-btn:hover {
  background: var(--primary-dark);
}
.login-error {
  color: var(--danger);
  font-size: 12px;
  margin-bottom: 8px;
  min-height: 18px;
}

/* Generic hidden utility */
.hidden { display: none !important; }