:root {
  color-scheme: dark;
  --bg: #1e1e1e;
  --surface: #252526;
  --border: #3c3c3c;
  --text: #cccccc;
  --muted: #858585;
  --accent: #0078d4;
  --accent-hover: #1a86d9;
  --user-bg: #264f78;
  --assistant-bg: #2d2d2d;
  --danger: #f14c4c;
  --success: #4ec9b0;
  --warning-bg: #3a2f1a;
  --warning-border: #cca700;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--text);
}

body {
  display: flex;
  flex-direction: column;
}

.screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

.hidden {
  display: none !important;
}

.login-card {
  margin: auto;
  width: min(360px, 92vw);
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.login-card h1 {
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
}

.subtitle {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

input,
textarea,
select,
button {
  font: inherit;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

button {
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1rem;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

button.secondary {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#login-btn {
  width: 100%;
  margin-top: 0.75rem;
}

.error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.header {
  padding: 0.75rem 1rem 0.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.header h1 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.controls {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.controls select {
  width: auto;
  min-width: 5rem;
}

.controls #model-input {
  flex: 1;
  min-width: 6rem;
}

.tabs-bar {
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  padding: 0.5rem 0.5rem 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.tabs {
  display: flex;
  gap: 0.35rem;
  flex: 1;
  overflow-x: auto;
  min-width: 0;
}

.tab-add {
  flex-shrink: 0;
  width: 2.25rem;
  padding: 0.45rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 1.1rem;
  line-height: 1;
}

.tab-add:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.add-project-panel {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.add-project-title {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.field {
  display: block;
  margin-bottom: 0.65rem;
}

.field span {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.path-preview {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  color: var(--muted);
  word-break: break-all;
}

.checkbox-field {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
  font-size: 0.85rem;
}

.checkbox-field input {
  width: auto;
}

.add-project-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.tab {
  flex-shrink: 0;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: 0.85rem;
}

.tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.message {
  max-width: 92%;
  padding: 0.65rem 0.85rem;
  border-radius: 12px;
  line-height: 1.45;
  white-space: pre-wrap;
  word-break: break-word;
}

.message.user {
  align-self: flex-end;
  background: var(--user-bg);
}

.message.assistant {
  align-self: flex-start;
  background: var(--assistant-bg);
  border: 1px solid var(--border);
}

.message .thought {
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
  margin-bottom: 0.5rem;
}

.message .preamble {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.message .response-text {
  margin-top: 0.35rem;
}

.tool-calls-group {
  margin: 0.35rem 0 0.5rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.15);
  font-size: 0.85rem;
}

.tool-calls-group summary {
  cursor: pointer;
  padding: 0.45rem 0.55rem;
  color: var(--muted);
  list-style: none;
}

.tool-calls-group summary::-webkit-details-marker {
  display: none;
}

.tool-calls-group summary::before {
  content: '▸ ';
}

.tool-calls-group[open] summary::before {
  content: '▾ ';
}

.tool-calls-group[open] summary {
  border-bottom: 1px solid var(--border);
}

.tool-call {
  padding: 0.45rem 0.55rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.85rem;
}

.tool-call:first-of-type {
  border-top: none;
}

.tool-call .status {
  color: var(--success);
}

.permission-banner {
  margin: 0 0.75rem;
  padding: 0.75rem;
  border-radius: 10px;
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
}

.permission-hint {
  margin: 0.35rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

.permission-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.permission-actions .allow-all-btn {
  flex: 1 1 100%;
  font-weight: 600;
}

.auto-approve-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  white-space: nowrap;
  cursor: pointer;
}

.auto-approve-toggle input {
  width: 1rem;
  height: 1rem;
}

.composer {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem;
  padding-bottom: max(0.75rem, env(safe-area-inset-bottom));
  border-top: 1px solid var(--border);
  background: var(--surface);
  align-items: flex-end;
}

.composer textarea {
  flex: 1;
  resize: none;
  min-height: 2.5rem;
  max-height: 8rem;
}

.stop-btn {
  background: var(--danger);
  flex-shrink: 0;
}

.status-bar {
  margin: 0;
  padding: 0.25rem 0.75rem 0.5rem;
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
}

.status-bar.error {
  color: var(--danger);
}