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

:root {
  --bg-primary: #1e1e1e;
  --bg-secondary: #252526;
  --bg-tertiary: #2d2d2d;
  --border: #3e3e3e;
  --text-primary: #d4d4d4;
  --text-secondary: #9d9d9d;
  --accent: #0e639c;
  --accent-hover: #1177bb;
  --success: #4ec9b0;
  --error: #f44747;
  --warning: #ce9178;
}

body[data-theme="light"] {
  --bg-primary:    #ffffff;
  --bg-secondary:  #f3f3f3;
  --bg-tertiary:   #e8e8e8;
  --border:        #d4d4d4;
  --text-primary:  #1e1e1e;
  --text-secondary:#6e6e6e;
  --accent:        #0e639c;
  --accent-hover:  #1177bb;
  --success:       #0d7a5f;
  --error:         #c72e2e;
  --warning:       #7a4a1e;
}

body[data-theme="light"] .method-get    { color: #0d7a5f; }
body[data-theme="light"] .method-post   { color: #7a6e00; }
body[data-theme="light"] .method-put    { color: #7a4a1e; }
body[data-theme="light"] .method-patch  { color: #1a6fa8; }
body[data-theme="light"] .method-delete { color: #c72e2e; }

body[data-theme="light"] .status-2xx { color: #0d7a5f; }
body[data-theme="light"] .status-3xx { color: #7a6e00; }
body[data-theme="light"] .status-4xx { color: #7a4a1e; }
body[data-theme="light"] .status-5xx { color: #c72e2e; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

.app {
  display: flex;
  height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  min-width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

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

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  line-height: 1;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

.logo {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}

.sidebar-section {
  padding: 12px 0;
}

.section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding: 0 16px 8px;
  letter-spacing: 0.08em;
}

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

/* Main */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Request form */
.request-form {
  border-bottom: 1px solid var(--border);
}

.request-bar {
  display: flex;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.method-select {
  background: var(--bg-tertiary);
  color: var(--success);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  min-width: 100px;
}

.url-input {
  flex: 1;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 13px;
  outline: none;
}

.url-input:focus {
  border-color: var(--accent);
}

.send-btn {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 4px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

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

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

/* Tabs */
.tabs {
  display: flex;
  gap: 0;
  padding: 0 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-size: 13px;
  cursor: pointer;
}

.tab.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
}

.tab-panel {
  display: none;
  padding: 12px 16px;
  background: var(--bg-primary);
}

.tab-panel.active {
  display: block;
}

/* Headers */
.headers-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 8px;
}

.header-row {
  display: flex;
  gap: 8px;
}

.header-row input {
  flex: 1;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 10px;
  font-size: 12px;
  outline: none;
}

.header-row input:focus {
  border-color: var(--accent);
}

.remove-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--error);
  border-radius: 4px;
  padding: 6px 10px;
  cursor: pointer;
  font-size: 12px;
}

.add-btn {
  background: none;
  border: 1px dashed var(--border);
  color: var(--text-secondary);
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  width: 100%;
}

.add-btn:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* Body */
.body-input {
  width: 100%;
  height: 120px;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 10px;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  resize: vertical;
  outline: none;
}

.body-input:focus {
  border-color: var(--accent);
}

/* Response */
.response-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.response-meta {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 8px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
}

.response-meta.hidden {
  display: none;
}

.response-status {
  font-weight: 600;
}

.response-time {
  color: var(--text-secondary);
}

.response-body {
  flex: 1;
  padding: 16px;
  overflow: auto;
  font-family: 'Courier New', monospace;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text-secondary);
}

.status-2xx { color: #4ec9b0; }
.status-3xx { color: #dcdcaa; }
.status-4xx { color: #ce9178; }
.status-5xx { color: #f44747; }

/* Response tabs */
.response-tabs {
  display: flex;
  padding: 0 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.response-tabs.hidden { display: none; }

.response-panel {
  flex: 1;
  overflow: auto;
}

/* Headers table */
.headers-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  font-family: 'Courier New', monospace;
  padding: 8px;
}

.headers-table td {
  padding: 4px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.headers-table td:first-child {
  color: var(--text-secondary);
  white-space: nowrap;
  width: 220px;
}

/* History */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px 8px;
}

.section-header .section-title {
  padding: 0;
}

.clear-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 11px;
  padding: 2px 4px;
  border-radius: 3px;
}

.clear-btn:hover {
  color: var(--error);
}

.history-item {
  display: flex;
  align-items: center;
  padding: 0 8px;
}

.history-item:hover {
  background: var(--bg-tertiary);
}

.history-load {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  text-align: left;
  overflow: hidden;
  min-width: 0;
}

.history-method {
  font-size: 10px;
  font-weight: 700;
  font-family: 'Courier New', monospace;
  min-width: 40px;
}

.method-get    { color: #4ec9b0; }
.method-post   { color: #dcdcaa; }
.method-put    { color: #ce9178; }
.method-patch  { color: #9cdcfe; }
.method-delete { color: #f44747; }

.history-url {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  padding: 4px;
  opacity: 0;
  flex-shrink: 0;
}

.history-item:hover .history-delete {
  opacity: 1;
}

.history-delete:hover {
  color: var(--error);
}

.history-empty {
  font-size: 12px;
  color: var(--text-secondary);
  padding: 8px 16px;
  font-style: italic;
}

/* Save button */
.save-btn {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 13px;
  cursor: pointer;
  flex-shrink: 0;
}

.save-btn:hover {
  color: var(--text-primary);
  border-color: var(--accent);
}

/* Collections */
.collection-group {
  padding: 0;
}

.collection-header {
  display: flex;
  align-items: center;
  padding: 0 8px;
}

.collection-header:hover {
  background: var(--bg-tertiary);
}

.collection-toggle {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  text-align: left;
  color: var(--text-primary);
  font-size: 12px;
  font-weight: 500;
  overflow: hidden;
}

.collection-arrow {
  font-size: 9px;
  color: var(--text-secondary);
  flex-shrink: 0;
  transition: transform 0.15s;
}

.collection-arrow.open {
  transform: rotate(90deg);
}

.collection-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collection-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  padding: 4px;
  opacity: 0;
  flex-shrink: 0;
}

.collection-header:hover .collection-delete {
  opacity: 1;
}

.collection-delete:hover {
  color: var(--error);
}

.collection-items {
  list-style: none;
  display: none;
}

.collection-items.open {
  display: block;
}

.collection-item {
  display: flex;
  align-items: center;
  padding: 0 8px 0 24px;
}

.collection-item:hover {
  background: var(--bg-tertiary);
}

.collection-item-load {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px 8px;
  text-align: left;
  overflow: hidden;
  min-width: 0;
}

.collection-item-name {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.collection-item-delete {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 10px;
  padding: 4px;
  opacity: 0;
  flex-shrink: 0;
}

.collection-item:hover .collection-item-delete {
  opacity: 1;
}

.collection-item-delete:hover {
  color: var(--error);
}

/* Save modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 100;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open {
  display: flex;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  min-width: 300px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.modal h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.modal select,
.modal input[type="text"] {
  width: 100%;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 8px 10px;
  font-size: 13px;
  outline: none;
}

.modal select:focus,
.modal input[type="text"]:focus {
  border-color: var(--accent);
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

.modal-actions button {
  padding: 6px 16px;
  border-radius: 4px;
  font-size: 13px;
  cursor: pointer;
  border: 1px solid var(--border);
}

.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent) !important;
}

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

.btn-cancel {
  background: none;
  color: var(--text-secondary);
}

.btn-cancel:hover {
  color: var(--text-primary);
}

.btn-danger {
  background: var(--error);
  color: white;
  border-color: var(--error) !important;
}

.btn-danger:hover {
  opacity: 0.85;
}

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