:root {
  --apt-bg: #0b0c10;
  --apt-panel: #111217;
  --apt-panel-2: #161823;
  --apt-muted: #aab1c5;
  --apt-text: #e8ebf5;
  --apt-accent: #2f81f7;
  --apt-border: #232634;
  --apt-success: #2fbf71;
  --apt-danger: #ff4d4f;
  --apt-warning: #f2b705;
  --apt-blue: #69a7ff;
  --apt-purple: #b07cff;
}

body.api-tester {
  margin: 0;
  background: var(--apt-bg);
  color: var(--apt-text);
  font: 14px/1.45 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial;
  min-height: 100vh;
}
body.api-tester [hidden] { display: none !important; }

.apt-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--apt-border);
  background: #0d0f15;
  position: sticky;
  top: 0;
  z-index: 10;
}
.apt-header h1 { font-size: 18px; margin: 0; }
.apt-help-link {
  font-size: 14px;
  margin-left: 10px;
  color: var(--apt-accent);
  text-decoration: none;
  font-weight: normal;
}
.apt-header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.apt-env-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--apt-muted);
}

.apt-main {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 12px;
  padding: 12px;
  min-height: calc(100vh - 60px);
  align-items: stretch;
}

.apt-sidebar {
  background: var(--apt-panel);
  border: 1px solid var(--apt-border);
  border-radius: 12px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.apt-sidebar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
}
.apt-sidebar-tools { display: flex; gap: 6px; }
.apt-clipboard-info {
  padding: 6px 8px;
  border: 1px dashed var(--apt-border);
  border-radius: 8px;
  font-size: 12px;
  color: var(--apt-muted);
  margin-bottom: 8px;
}

.apt-tree { overflow-y: auto; }
.apt-collection {
  border: 1px solid var(--apt-border);
  border-radius: 10px;
  margin-bottom: 6px;
  background: #0f1018;
}
.apt-collection-head {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  cursor: pointer;
  user-select: none;
}
.apt-collection-head:hover { background: #141726; }
.apt-collection.active > .apt-collection-head { background: #192038; }
.apt-collection-chev { width: 14px; text-align: center; opacity: 0.7; }
.apt-collection-name { flex: 1; font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.apt-collection-add, .apt-collection-menu {
  border: 1px solid var(--apt-border);
  background: var(--apt-panel-2);
  color: var(--apt-text);
  border-radius: 6px;
  width: 22px;
  height: 22px;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.apt-collection-add:hover, .apt-collection-menu:hover { background: #192038; }
.apt-requests { border-top: 1px solid var(--apt-border); padding: 4px 0; }
.apt-request {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 22px;
  cursor: pointer;
  user-select: none;
  border-left: 3px solid transparent;
}
.apt-request:hover { background: #141726; }
.apt-request.active { background: #192038; border-left-color: var(--apt-accent); }
.apt-request.cut { opacity: 0.5; font-style: italic; }
.apt-method-badge {
  display: inline-block;
  font-size: 10px;
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--apt-border);
  min-width: 38px;
  text-align: center;
  letter-spacing: 0.3px;
}
.apt-m-GET { background: #0a3a2a; border-color: #134437; }
.apt-m-POST { background: #2a0a2a; border-color: #3a143a; }
.apt-m-PUT { background: #3a2a0a; border-color: #4a3a1a; }
.apt-m-PATCH { background: #10314a; border-color: #1a3f5c; }
.apt-m-DELETE { background: #3a0a0a; border-color: #4a1a1a; }
.apt-m-HEAD, .apt-m-OPTIONS { background: #232634; border-color: #2d3140; }
.apt-request-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.apt-request-menu {
  visibility: hidden;
  border: 1px solid var(--apt-border);
  background: transparent;
  color: var(--apt-text);
  border-radius: 6px;
  width: 22px;
  height: 22px;
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
}
.apt-request:hover .apt-request-menu, .apt-request.active .apt-request-menu { visibility: visible; }
.apt-collection.empty .apt-requests::after {
  content: "(no requests yet)";
  display: block;
  padding: 4px 8px 4px 22px;
  color: var(--apt-muted);
  font-size: 12px;
}

.apt-workarea {
  background: var(--apt-panel);
  border: 1px solid var(--apt-border);
  border-radius: 12px;
  padding: 14px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.apt-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  color: var(--apt-muted);
  gap: 10px;
}
.apt-empty[hidden] { display: none; }
.apt-empty h2 { margin: 0; color: var(--apt-text); }

.apt-editor { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.apt-editor[hidden] { display: none; }

.apt-request-head {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.apt-req-name {
  flex: 1;
  font-size: 15px;
  font-weight: 600;
  min-width: 200px;
}
.apt-dirty-flag { color: var(--apt-warning); font-size: 12px; }

.apt-url-bar {
  display: grid;
  grid-template-columns: 110px 1fr auto auto;
  gap: 6px;
}
.apt-method {
  padding: 8px;
  border: 1px solid var(--apt-border);
  background: var(--apt-panel-2);
  color: var(--apt-text);
  border-radius: 8px;
  font-weight: 600;
}
.apt-url {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

.apt-input {
  padding: 6px 8px;
  border: 1px solid var(--apt-border);
  background: #0e1018;
  color: var(--apt-text);
  border-radius: 8px;
  font: inherit;
}
.apt-input-sm { padding: 4px 6px; font-size: 12px; }
.apt-input.invalid { border-color: var(--apt-danger); }

.apt-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px;
  border: 1px solid var(--apt-border);
  background: var(--apt-panel-2);
  color: var(--apt-text);
  border-radius: 8px;
  cursor: pointer;
  font: inherit;
}
.apt-btn:hover { background: #192038; }
.apt-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.apt-btn-sm { padding: 4px 8px; font-size: 12px; }
.apt-btn-xs { padding: 3px 6px; font-size: 11px; }
.apt-btn-primary { background: var(--apt-accent); border-color: var(--apt-accent); }
.apt-btn-primary:hover { filter: brightness(1.05); }
.apt-btn-danger { background: var(--apt-danger); border-color: var(--apt-danger); }
.apt-btn-danger:hover { filter: brightness(1.05); }

.apt-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--apt-border);
  flex-wrap: wrap;
}
.apt-tab {
  padding: 6px 12px;
  border: 1px solid var(--apt-border);
  border-bottom: none;
  background: #0f1322;
  color: var(--apt-text);
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  position: relative;
  top: 1px;
}
.apt-tab.active { background: #192038; }
.apt-tabs-sm .apt-tab { padding: 4px 10px; font-size: 12px; }

.apt-tab-panels { padding: 10px 0; }
.apt-panel { display: none; }
.apt-panel.active { display: block; }

.apt-hint { font-size: 12px; color: var(--apt-muted); }

.apt-kv-table {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) minmax(0, 1.5fr) minmax(0, 1.5fr) 30px;
  gap: 4px;
  margin-bottom: 6px;
}
.apt-kv-head {
  display: contents;
  font-size: 11px;
  color: var(--apt-muted);
}
.apt-kv-head > div {
  padding: 4px 6px;
  font-size: 11px;
  color: var(--apt-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.apt-kv-row { display: contents; }
.apt-kv-row input[type="checkbox"] { justify-self: center; align-self: center; }
.apt-kv-row input[type="text"] {
  width: 100%;
  min-width: 0;
  padding: 5px 8px;
  border: 1px solid var(--apt-border);
  background: #0e1018;
  color: var(--apt-text);
  border-radius: 6px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
}
.apt-kv-rm {
  align-self: center;
  text-align: center;
  cursor: pointer;
  color: #ff9a9c;
  font-weight: 600;
  background: transparent;
  border: none;
  font-size: 16px;
  padding: 0;
}

.apt-quick-headers {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
  align-items: center;
}

.apt-body-mode-row, .apt-auth-mode-row, .apt-body-view-toggle {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.apt-body-mode-row label, .apt-auth-mode-row label, .apt-body-view-toggle label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--apt-muted);
}

.spacer { flex: 1; }

textarea.apt-code, pre.apt-code, .apt-code {
  width: 100%;
  min-height: 120px;
  background: #0b0d16;
  color: #d6e3ff;
  border: 1px solid var(--apt-border);
  border-radius: 10px;
  padding: 10px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 12px;
  box-sizing: border-box;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}
textarea.apt-code { resize: vertical; }
.apt-preview { min-height: 80px; }
.apt-resp-body { min-height: 160px; max-height: 500px; }
.apt-body-err {
  margin-top: 6px;
  padding: 6px 8px;
  border: 1px solid rgba(255, 77, 79, 0.35);
  background: rgba(255, 77, 79, 0.08);
  border-radius: 8px;
  color: #ff9a9c;
  font-size: 12px;
}

.apt-auth-config { display: flex; flex-direction: column; gap: 6px; }
.apt-auth-config label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--apt-muted); }

.apt-response {
  border-top: 1px dashed var(--apt-border);
  padding-top: 10px;
  margin-top: 4px;
}
.apt-response-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}
.apt-resp-status { font-family: ui-monospace, monospace; font-size: 12px; }
.apt-resp-2xx { color: var(--apt-success); }
.apt-resp-3xx { color: var(--apt-blue); }
.apt-resp-4xx { color: var(--apt-warning); }
.apt-resp-5xx, .apt-resp-err { color: var(--apt-danger); }

.apt-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.apt-modal-overlay[hidden] { display: none; }
.apt-modal {
  background: var(--apt-panel);
  border: 1px solid var(--apt-border);
  border-radius: 12px;
  max-width: 95vw;
  width: 480px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
}
.apt-modal-lg { width: 800px; }
.apt-modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--apt-border);
}
.apt-modal-head h2 { margin: 0; font-size: 16px; }
.apt-modal-body { padding: 16px; overflow: auto; flex: 1; }
.apt-modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  padding: 10px 16px;
  border-top: 1px solid var(--apt-border);
}

.apt-env-section { margin-bottom: 16px; }
.apt-env-section h3 { margin: 0 0 8px 0; font-size: 14px; color: var(--apt-text); }
.apt-block-label { display: flex; flex-direction: column; gap: 4px; margin: 8px 0; font-size: 12px; color: var(--apt-muted); }
.apt-block-label > span { font-weight: 600; color: var(--apt-text); font-size: 12px; }

.apt-dialog-textarea { min-height: 60px; resize: vertical; font-family: inherit; }
.apt-desc-details { background: #0e1018; border: 1px solid var(--apt-border); border-radius: 10px; padding: 6px 10px; }
.apt-desc-details > summary { cursor: pointer; user-select: none; font-size: 12px; color: var(--apt-muted); padding: 2px 0; }
.apt-desc-details > summary:hover { color: var(--apt-text); }
.apt-desc-details[open] > summary { color: var(--apt-text); }
.apt-desc-details textarea { width: 100%; margin-top: 6px; box-sizing: border-box; }
.apt-desc-marker { color: var(--apt-warning); font-weight: 600; }
.apt-collection-desc-marker { color: var(--apt-muted); font-size: 11px; margin-left: 4px; opacity: 0.7; }
#dialogMessage { white-space: pre-wrap; margin: 0 0 10px 0; }
#dialogMessage p { margin: 0 0 8px 0; }
#dialogButtons { display: flex; justify-content: flex-end; gap: 6px; padding: 10px 16px; border-top: 1px solid var(--apt-border); }
.apt-env-controls {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.apt-toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--apt-panel-2);
  color: var(--apt-text);
  border: 1px solid var(--apt-border);
  padding: 10px 14px;
  border-radius: 10px;
  z-index: 200;
  font-size: 13px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.2s;
}
.apt-toast.show { opacity: 1; }
.apt-toast.error { border-color: var(--apt-danger); color: #ff9a9c; }

/* Help section */
.apt-help-section {
  margin: 20px 12px;
  background: var(--apt-panel);
  border: 1px solid var(--apt-border);
  border-radius: 14px;
}
.apt-help-header {
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--apt-border);
}
.apt-help-header h2 { margin: 0; font-size: 16px; }
.apt-help-header:hover { background: rgba(255, 255, 255, 0.04); }
.apt-help-content {
  padding: 14px 16px;
  display: none;
}
.apt-help-content.expanded { display: block; }
.apt-help-content h3 { color: var(--apt-accent); margin-top: 0; }
.apt-help-content h4 { color: var(--apt-text); margin-top: 14px; margin-bottom: 6px; }
.apt-help-content code {
  background: #0b0d16;
  border: 1px solid var(--apt-border);
  border-radius: 4px;
  padding: 1px 4px;
  font-size: 12px;
}
.apt-help-content ul { padding-left: 22px; line-height: 1.5; margin: 4px 0; }

/* Context menu */
.apt-context-menu {
  position: fixed;
  background: var(--apt-panel-2);
  border: 1px solid var(--apt-border);
  border-radius: 8px;
  padding: 4px;
  z-index: 150;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  min-width: 160px;
}
.apt-context-menu button {
  display: block;
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  color: var(--apt-text);
  padding: 6px 10px;
  border-radius: 6px;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}
.apt-context-menu button:hover { background: #192038; }
.apt-context-menu button:disabled { opacity: 0.4; cursor: not-allowed; }
.apt-context-menu button:disabled:hover { background: transparent; }
.apt-context-menu hr {
  border: none;
  border-top: 1px solid var(--apt-border);
  margin: 4px 0;
}
.apt-context-menu .danger { color: #ff9a9c; }

@media (max-width: 800px) {
  .apt-main { grid-template-columns: 1fr; }
  .apt-sidebar { max-height: 280px; }
  .apt-url-bar { grid-template-columns: 100px 1fr; }
  .apt-url-bar .apt-btn { grid-column: span 2; }
  .apt-kv-table { grid-template-columns: 24px 1fr 1fr 26px; }
  .apt-kv-head > div:nth-child(4), .apt-kv-row > input:nth-child(4) { display: none; }
}