/* ============================================================
   CSS Variables & Reset
   ============================================================ */
:root {
  --theme-color: #4CAF50;
  --bg-color: #f5f5f5;
  --text-color: #333;
  --card-bg: #fff;
  --border-color: #e0e0e0;
  --muted-color: #999;
  --card-border-color: #4CAF50;
  --card-border-radius: 12px;
  --danger-color: #e53935;
  --warning-color: #ff9800;
  --nav-bg: #1a1a2e;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.hidden {
  display: none !important;
}

/* ============================================================
   Query Page
   ============================================================ */
.app-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 20px 16px 40px;
  min-height: 100vh;
}

.header {
  text-align: center;
  padding: 24px 0 16px;
}

.logo {
  width: 64px;
  height: 64px;
  margin: 0 auto 12px;
  display: block;
  border-radius: 12px;
  object-fit: cover;
}

.header h1 {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-color);
}

/* Form */
.form-section {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px 20px;
  margin-bottom: 20px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.query-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 14px;
  font-weight: 500;
  color: #555;
}

.form-group input {
  height: 44px;
  padding: 0 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s;
  background: #fff;
  -webkit-appearance: none;
}

.form-group input:focus {
  border-color: var(--theme-color);
}

.btn-primary {
  height: 46px;
  background: var(--theme-color);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
  -webkit-appearance: none;
}

.btn-primary:active {
  opacity: 0.85;
}

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Loading */
.loading-section {
  text-align: center;
  padding: 20px 0;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border-color);
  border-top-color: var(--theme-color);
  border-radius: 50%;
  margin: 0 auto 8px;
  animation: spin 0.8s linear infinite;
}

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

.loading-section p {
  color: var(--muted-color);
  font-size: 14px;
}

/* Error message */
.error-section {
  background: #fff3e0;
  border-radius: 8px;
  padding: 16px 20px;
  margin-bottom: 20px;
  text-align: center;
}

.error-section p {
  color: #e65100;
  font-size: 14px;
}

/* Privacy Notice */
.privacy-notice {
  font-size: 12px;
  color: var(--muted-color);
  text-align: center;
  padding: 12px 16px;
  line-height: 1.5;
}

/* Footer */
.footer {
  font-size: 12px;
  color: var(--muted-color);
  text-align: center;
  padding: 8px 0;
}

/* Query closed message */
.query-closed-message {
  text-align: center;
  padding: 40px 20px;
  color: var(--muted-color);
  font-size: 15px;
}

/* ============================================================
   Modal (Query Result Popup)
   ============================================================ */
.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: flex-start;
  justify-content: center;
  overflow-y: auto;
  padding: 5vh 16px;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { transform: translateY(30px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.modal {
  background: var(--card-bg);
  border-radius: 16px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  animation: slideUp 0.3s ease;
  margin: auto 0;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-color);
}

.modal-close-btn {
  width: 32px;
  height: 32px;
  border: none;
  background: #f5f5f5;
  border-radius: 50%;
  font-size: 20px;
  color: #666;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  flex-shrink: 0;
  line-height: 1;
}

.modal-close-btn:hover {
  background: #e0e0e0;
}

.modal-body {
  padding: 20px 24px 24px;
  max-height: 65vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Result cards inside modal */
.result-card {
  background: var(--card-bg);
  border-radius: var(--card-border-radius);
  padding: 20px;
  margin-bottom: 12px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
  border-left: 4px solid var(--card-border-color);
}

.result-card.highlight-first .first-field {
  font-weight: 700;
  font-size: 18px;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--card-border-color);
}

.result-card.highlight-first .first-field .result-label {
  font-size: 14px;
  color: var(--muted-color);
}

.result-card.highlight-first .first-field .result-value {
  font-size: 20px;
  font-weight: 700;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #f0f0f0;
}

.result-item:last-child {
  border-bottom: none;
}

.result-label {
  font-size: 14px;
  color: var(--muted-color);
  flex-shrink: 0;
}

.result-value {
  font-size: 16px;
  font-weight: 600;
  text-align: right;
  color: var(--text-color);
  word-break: break-all;
}

/* Result table inside modal */
.result-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: var(--card-border-radius);
  overflow: hidden;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.result-table thead {
  background: var(--card-border-color);
}

.result-table th {
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  padding: 10px 12px;
  text-align: left;
  white-space: nowrap;
}

.result-table td {
  font-size: 14px;
  padding: 10px 12px;
  border-bottom: 1px solid #f0f0f0;
}

.result-table tbody tr:last-child td {
  border-bottom: none;
}

.result-table td.first-cell {
  font-weight: 700;
  font-size: 15px;
}

/* Modal error message */
.modal-error-msg {
  text-align: center;
  padding: 32px 16px;
  color: var(--muted-color);
  font-size: 15px;
}

/* Modal footer credit */
.modal-footer-text {
  text-align: center;
  padding: 16px 0 4px;
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted-color);
  border-top: 1px solid #f0f0f0;
}

/* ============================================================
   Admin Login Page
   ============================================================ */
.admin-login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.login-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 40px 32px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  text-align: center;
}

.login-icon {
  color: var(--muted-color);
  margin-bottom: 16px;
  display: flex;
  justify-content: center;
}

.login-card h2 {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-color);
}

.login-card input {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 16px;
  outline: none;
  margin-bottom: 16px;
  transition: border-color 0.2s;
  -webkit-appearance: none;
}

.login-card input:focus {
  border-color: var(--theme-color);
}

.login-card .btn-primary {
  width: 100%;
}

/* ============================================================
   Admin Page Layout
   ============================================================ */
.admin-page {
  min-height: 100vh;
  background: var(--bg-color);
}

.admin-nav {
  background: var(--nav-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.admin-nav-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
}

.admin-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  margin: 0;
}

.btn-text {
  background: none;
  border: none;
  color: rgba(255,255,255,0.7);
  font-size: 14px;
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.btn-text:hover {
  background: rgba(255,255,255,0.1);
  color: #fff;
}

.admin-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 20px 16px 80px;
}

/* ============================================================
   Admin Card
   ============================================================ */
.admin-card {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 24px 20px;
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-color);
}

/* ============================================================
   Data Overview
   ============================================================ */
.data-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.data-info-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid #f5f5f5;
}

.data-info-item:last-child {
  border-bottom: none;
}

.data-info-item .label {
  color: var(--muted-color);
  font-size: 14px;
}

.data-info-item .value {
  font-weight: 500;
  font-size: 14px;
}

/* ============================================================
   Upload Area
   ============================================================ */
.upload-area {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 32px 20px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.upload-area:hover,
.upload-area.drag-over {
  border-color: var(--theme-color);
  background: rgba(76, 175, 80, 0.04);
}

.upload-area svg {
  margin-bottom: 8px;
}

.upload-text {
  color: #555;
  font-size: 15px;
  font-weight: 500;
  margin-bottom: 4px;
}

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

.file-name {
  color: var(--theme-color);
  font-weight: 500;
  font-size: 14px;
  margin-top: 8px;
}

.upload-actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

#uploadWarnings {
  margin-top: 12px;
}

.upload-warning-item {
  padding: 8px 12px;
  background: #fff3e0;
  border-radius: 6px;
  border-left: 3px solid var(--warning-color);
  color: #e65100;
  font-size: 13px;
  margin-bottom: 4px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn-secondary {
  display: inline-block;
  height: 38px;
  line-height: 38px;
  padding: 0 20px;
  background: #f5f5f5;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  color: #555;
  cursor: pointer;
  text-decoration: none;
  -webkit-appearance: none;
  transition: background 0.2s;
}

.btn-secondary:hover {
  background: #eee;
}

.btn-danger-sm {
  height: 32px;
  padding: 0 16px;
  background: transparent;
  color: var(--danger-color);
  border: 1px solid var(--danger-color);
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  -webkit-appearance: none;
  transition: background 0.2s;
}

.btn-danger-sm:hover {
  background: var(--danger-color);
  color: #fff;
}

/* ============================================================
   Query Toggle Switch
   ============================================================ */
.query-toggle-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.switch-label {
  position: relative;
  display: inline-block;
  width: 52px;
  height: 28px;
  cursor: pointer;
  flex-shrink: 0;
}

.switch-label input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #ccc;
  border-radius: 28px;
  transition: background 0.3s;
}

.switch::before {
  content: '';
  position: absolute;
  width: 22px;
  height: 22px;
  left: 3px;
  bottom: 3px;
  background: #fff;
  border-radius: 50%;
  transition: transform 0.3s;
}

.switch-label input:checked + .switch {
  background: var(--theme-color);
}

.switch-label input:checked + .switch::before {
  transform: translateX(24px);
}

.toggle-status {
  font-size: 14px;
  font-weight: 500;
}

.toggle-status.on {
  color: var(--theme-color);
}

.toggle-status.off {
  color: var(--danger-color);
}

/* ============================================================
   Config Form Elements
   ============================================================ */
.field-hint {
  font-size: 13px;
  color: var(--muted-color);
  margin: 0;
  line-height: 1.5;
}

.section-label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: #555;
}

.config-group {
  margin-bottom: 16px;
}

.config-group > label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 6px;
  color: #555;
}

.text-input,
.select-input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  background: #fff;
}

.text-input:focus,
.select-input:focus {
  border-color: var(--theme-color);
}

.color-input {
  width: 100%;
  height: 40px;
  padding: 2px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  -webkit-appearance: none;
  background: #fff;
}

.color-input::-webkit-color-swatch-wrapper {
  padding: 0;
}

.color-input::-webkit-color-swatch {
  border: none;
  border-radius: 6px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: #555;
  cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  cursor: pointer;
}

/* Inline config row (e.g. font size + color) */
.inline-config-row {
  display: flex;
  gap: 16px;
  align-items: flex-end;
}

.inline-config-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.inline-config-item label {
  font-size: 13px;
  color: var(--muted-color);
}

/* Page config grid */
.page-config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.page-config-grid .full-width {
  grid-column: 1 / -1;
}

/* ============================================================
   Match Columns List
   ============================================================ */
.match-columns-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.match-column-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  background: #f9f9f9;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  transition: border-color 0.2s;
}

.match-column-row:hover {
  border-color: #d0d0d0;
}

.match-column-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  cursor: pointer;
}

.mc-col-name {
  font-size: 14px;
  font-weight: 500;
  min-width: 80px;
  flex-shrink: 0;
  cursor: pointer;
  color: #333;
}

.mc-label-input,
.mc-placeholder-input {
  flex: 1;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 13px;
  outline: none;
  min-width: 80px;
  transition: border-color 0.2s;
}

.mc-label-input:focus,
.mc-placeholder-input:focus {
  border-color: var(--theme-color);
}

/* ============================================================
   Display Fields List
   ============================================================ */
.display-fields-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.display-field-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.display-field-row select {
  flex: 1;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
  background: #fff;
}

.display-field-row input {
  flex: 1;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  outline: none;
}

.display-field-row select:focus,
.display-field-row input:focus {
  border-color: var(--theme-color);
}

.btn-remove {
  width: 36px;
  height: 36px;
  background: #fff0f0;
  border: 1px solid #ffcdd2;
  border-radius: 6px;
  color: var(--danger-color);
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
  transition: background 0.2s;
}

.btn-remove:hover {
  background: #ffe0e0;
}

.btn-reorder {
  width: 32px;
  height: 36px;
  background: #f5f5f5;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: #666;
  cursor: pointer;
  font-size: 10px;
  line-height: 1;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}

.btn-reorder:hover {
  background: #e8e8e8;
  border-color: var(--theme-color);
  color: var(--theme-color);
}

.btn-add-field {
  margin-top: 8px;
  padding: 8px 16px;
  background: #f5f5f5;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  color: #666;
  transition: border-color 0.2s, color 0.2s;
}

.btn-add-field:hover {
  border-color: var(--theme-color);
  color: var(--theme-color);
}

/* ============================================================
   Save Bar
   ============================================================ */
.save-bar {
  position: sticky;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 0;
  text-align: center;
  z-index: 50;
}

.btn-save {
  height: 48px;
  padding: 0 48px;
  background: var(--theme-color);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  -webkit-appearance: none;
  box-shadow: 0 4px 12px rgba(76, 175, 80, 0.3);
  transition: opacity 0.2s, transform 0.1s;
}

.btn-save:active {
  opacity: 0.85;
  transform: scale(0.98);
}

/* ============================================================
   QR Code Section
   ============================================================ */
.qr-section {
  text-align: center;
}

.qr-actions {
  margin-top: 12px;
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

#qrImage img {
  max-width: 240px;
  border-radius: 8px;
  margin: 16px auto 0;
  display: block;
}

.qr-url {
  font-size: 13px;
  color: var(--muted-color);
  word-break: break-all;
  margin: 8px 0;
}

/* ============================================================
   Toast
   ============================================================ */
.toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 14px;
  z-index: 9999;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  opacity: 1;
}

.toast.error {
  background: var(--danger-color);
}

.toast.success {
  background: var(--theme-color);
}

.toast.info {
  background: #2196F3;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 600px) {
  .page-config-grid {
    grid-template-columns: 1fr;
  }

  .match-column-row {
    flex-wrap: wrap;
  }

  .match-column-row .mc-col-name {
    min-width: 60px;
  }

  .match-column-row .mc-label-input,
  .match-column-row .mc-placeholder-input {
    flex: 1 1 120px;
  }

  .admin-content {
    padding: 16px 12px 80px;
  }

  .admin-card {
    padding: 20px 16px;
  }

  .modal {
    border-radius: 12px;
  }

  .modal-header {
    padding: 16px 20px;
  }

  .modal-body {
    padding: 16px 20px 20px;
  }
}