/* ==========================================================================
   Flynn Gateway — Shared Dark Theme
   Terminal-aesthetic dark theme used by chat.html and index.html (dashboard).
   ========================================================================== */

/* ---------- CSS Custom Properties (Design Tokens) ---------- */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #1c2128;
  --bg-input: #0d1117;

  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;

  --accent: #58a6ff;
  --accent-muted: rgba(88, 166, 255, 0.15);

  --error: #f85149;
  --error-muted: rgba(248, 81, 73, 0.15);

  --success: #3fb950;
  --success-muted: rgba(63, 185, 80, 0.15);

  --warning: #d29922;

  --border: #30363d;
  --border-light: #21262d;

  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-size-base: 14px;
  --font-size-sm: 12px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;

  --line-height: 1.55;
  --radius: 6px;
  --radius-lg: 10px;
  --container-max: 900px;

  --transition: 150ms ease;
}

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

/* ---------- Base ---------- */
html,
body {
  height: 100%;
  width: 100%;
  overflow: hidden; /* Pages handle their own scrolling */
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- Links ---------- */
a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ---------- Container ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Header ---------- */
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--text-primary);
  margin-right: auto;
}

header #status {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

header #status.connected {
  color: var(--success);
}

header #status.disconnected,
header #status.status-error {
  color: var(--error);
}

header #status.status-ok {
  color: var(--success);
}

/* ---------- Scrollbar (Webkit) ---------- */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ==========================================================================
   Chat-Specific Styles
   ========================================================================== */

/* Chat layout — full viewport flex column */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: var(--container-max);
  margin: 0 auto;
}

/* Scrollable message area */
.messages {
  flex: 1 1 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Message wrapper - contains message box and actions below it */
.message-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-width: 85%;
}

/* Individual message bubble */
.message {
  padding: 10px 14px;
  border-radius: var(--radius);
  word-wrap: break-word;
  white-space: pre-wrap;
  font-size: var(--font-size-base);
  line-height: var(--line-height);
}

/* User messages — right-aligned with accent tint */
.message.user {
  align-self: flex-end;
  background-color: var(--accent-muted);
  color: var(--text-primary);
  border: 1px solid rgba(88, 166, 255, 0.25);
}

/* Assistant messages — left-aligned with subtle bg */
.message.assistant {
  align-self: flex-start;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

/* Error messages */
.message.error {
  align-self: flex-start;
  background-color: var(--error-muted);
  color: var(--text-primary);
  border: 1px solid rgba(248, 81, 73, 0.35);
}

/* Input area — fixed at the bottom of chat */
.input-area {
  display: flex;
  flex-direction: row;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  background-color: var(--bg-secondary);
}

.input-area input {
  flex: 1 1 0;
  padding: 10px 12px;
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
}

.input-area input::placeholder {
  color: var(--text-muted);
}

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

.input-area button {
  padding: 10px 18px;
  background-color: var(--accent);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity var(--transition);
}

.input-area button:hover {
  opacity: 0.85;
}

.input-area button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ==========================================================================
   Dashboard-Specific Styles
   ========================================================================== */

/* Dashboard layout — grid of cards */
.dashboard {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
  padding: 24px 0;
}

/* Section headings in dashboard page */
.container > section {
  padding: 16px 0;
}

.container > section > h2 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* Dashboard header — spans full width */
.dashboard-header {
  grid-column: 1 / -1;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}

.dashboard-header h1 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

/* Card component */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--text-muted);
}

.card h2 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 12px;
}

.card .value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
}

.card .label {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-top: 4px;
}

/* Status indicators */
.status-ok {
  color: var(--success);
}

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

.status-warning {
  color: var(--warning);
}

.status-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 6px;
}

.status-dot.ok {
  background-color: var(--success);
}

.status-dot.error {
  background-color: var(--error);
}

.status-dot.warning {
  background-color: var(--warning);
}

/* Session list */
.session-list {
  list-style: none;
}

.session-list li {
  padding: 8px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.session-list li:last-child {
  border-bottom: none;
}

.session-list li a {
  color: var(--accent);
}

/* Tool list */
.tool-list {
  list-style: none;
}

.tool-list li {
  padding: 6px 0;
  border-bottom: 1px solid var(--border-light);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.tool-list li:last-child {
  border-bottom: none;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

/* Tool event display — monospace block for tool_start / tool_end */
.tool-event {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 8px 10px;
  margin: 4px 0;
  white-space: pre-wrap;
  word-break: break-all;
}

/* CSS spinner animation */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

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

/* Text utilities */
.text-muted {
  color: var(--text-muted);
}

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

.text-accent {
  color: var(--accent);
}

.text-error {
  color: var(--error);
}

.text-success {
  color: var(--success);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-lg {
  font-size: var(--font-size-lg);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: var(--font-size-sm);
  border-radius: 12px;
  font-weight: 600;
}

.badge.ok {
  background-color: var(--success-muted);
  color: var(--success);
}

.badge.error {
  background-color: var(--error-muted);
  color: var(--error);
}

/* ==========================================================================
   Responsive — Small Screens (<600px)
   ========================================================================== */
@media (max-width: 600px) {
  .container {
    padding: 0 8px;
  }

  .chat-container {
    max-width: 100%;
  }

  .messages {
    padding: 10px 8px;
  }

  .message {
    max-width: 95%;
    padding: 8px 10px;
  }

  .input-area {
    padding: 8px;
  }

  .input-area input {
    padding: 8px 10px;
  }

  .input-area button {
    padding: 8px 14px;
  }

  .dashboard {
    grid-template-columns: 1fr;
    padding: 16px 8px;
    gap: 12px;
  }

  .card {
    padding: 12px;
  }

  .card .value {
    font-size: var(--font-size-lg);
  }

  .chat-layout {
    height: calc(100vh - 32px);
  }

  .chat-header {
    padding-bottom: 8px;
    margin-bottom: 8px;
  }

  .btn-action {
    font-size: 11px;
    padding: 6px 8px;
    min-height: 36px;
  }

  .slash-popup-item {
    padding: 10px 12px;
  }

  .slash-popup-item .cmd-name {
    min-width: 70px;
    font-size: var(--font-size-sm);
  }

  .message-actions {
    opacity: 1;
  }

  .msg-action-btn {
    width: 28px;
    height: 28px;
  }
}

/* ==========================================================================
   SPA Shell Layout
   ========================================================================== */

.app-shell {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar navigation */
.sidebar {
  width: 220px;
  min-width: 220px;
  background-color: 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);
}

.logo {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
}

.nav-links {
  flex: 1;
  padding: 8px 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  transition: all var(--transition);
  border-left: 3px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
  background-color: var(--bg-tertiary);
  text-decoration: none;
  opacity: 1;
}

.nav-link.active {
  color: var(--accent);
  background-color: var(--accent-muted);
  border-left-color: var(--accent);
}

.nav-icon {
  font-size: var(--font-size-base);
  width: 20px;
  text-align: center;
}

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
}

.conn-status {
  font-size: var(--font-size-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.conn-status::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--text-muted);
}

.conn-status.connected::before {
  background-color: var(--success);
}

.conn-status.connecting::before {
  background-color: var(--warning);
}

.conn-status.disconnected::before {
  background-color: var(--error);
}

/* Main content area */
.content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
}

/* Page titles */
.page-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

/* ── Dashboard Cards ────────────────────────────────────────── */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
  transition: border-color var(--transition);
}

.stat-card:hover {
  border-color: var(--text-muted);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.stat-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.stat-value.ok { color: var(--success); }
.stat-value.error { color: var(--error); }
.stat-value.warning { color: var(--warning); }

/* ── Channels Grid ──────────────────────────────────────────── */

.channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.channel-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.channel-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.channel-dot.connected { background-color: var(--success); }
.channel-dot.connecting { background-color: var(--warning); }
.channel-dot.disconnected { background-color: var(--text-muted); }
.channel-dot.error { background-color: var(--error); }

.channel-name {
  font-weight: 600;
  color: var(--text-primary);
  text-transform: capitalize;
}

/* ── Services Grid ──────────────────────────────────────────── */

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin-bottom: 32px;
}

.service-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  border-left: 3px solid var(--border);
}

.service-card.service-connected {
  border-left-color: var(--success);
}

.service-card.service-configured {
  border-left-color: var(--accent);
}

.service-card.service-error {
  border-left-color: var(--error);
}

.service-card.service-not-configured {
  border-left-color: var(--text-muted);
  opacity: 0.6;
}

.service-type-icon {
  font-size: var(--font-size-base);
  flex-shrink: 0;
}

.service-name {
  font-weight: 600;
  color: var(--text-primary);
  text-transform: capitalize;
}

.service-status {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  text-transform: uppercase;
}

.service-card.service-connected .service-status {
  color: var(--success);
}

.service-card.service-configured .service-status {
  color: var(--accent);
}

.service-card.service-error .service-status {
  color: var(--error);
}

.service-card.service-not-configured .service-status {
  color: var(--text-muted);
  font-style: italic;
}

.service-description {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* ── Section Headers ────────────────────────────────────────── */

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  margin-top: 24px;
}

/* ── Usage Page Header ─────────────────────────────────────── */

.usage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.usage-header .page-title {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
  flex: 1;
}

.usage-header .btn {
  flex-shrink: 0;
}

/* ── Data Tables ────────────────────────────────────────────── */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-light);
}

th {
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom-color: var(--border);
}

td {
  color: var(--text-primary);
}

tr:hover td {
  background-color: var(--bg-tertiary);
}

/* ── Chat Page ──────────────────────────────────────────────── */

.chat-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 48px);
  max-width: var(--container-max);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}

.chat-header select {
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  outline: none;
}

.chat-header select:focus {
  border-color: var(--accent);
}

.chat-header button {
  padding: 6px 12px;
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.chat-header button:hover {
  background-color: var(--accent-muted);
  border-color: var(--accent);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 0;
}

.chat-input {
  display: flex;
  gap: 8px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.chat-input textarea {
  flex: 1;
  padding: 10px 12px;
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  resize: none;
  min-height: 42px;
  max-height: 150px;
  line-height: var(--line-height);
  transition: border-color var(--transition);
}

.chat-input textarea::placeholder {
  color: var(--text-muted);
}

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

.chat-input button {
  padding: 10px 18px;
  background-color: var(--accent);
  color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: opacity var(--transition);
  align-self: flex-end;
}

.chat-input button:hover {
  opacity: 0.85;
}

.chat-input button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Chat actions bar (search button, etc.) */
.chat-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  flex-wrap: wrap;
}

.chat-attachments {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.attachment-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.attachment-name {
  max-width: 220px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attachment-remove {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0;
}

.attachment-remove:hover {
  color: var(--text-primary);
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 16px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  transition: all var(--transition);
}

.btn-action:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  background: var(--bg-secondary);
}

.btn-action.active {
  background: var(--accent-muted);
  color: var(--accent);
  border-color: var(--accent);
}

.btn-action svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  fill: currentColor;
}

/* Slash command autocomplete popup */
.chat-input-wrapper {
  position: relative;
}

.slash-popup {
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  margin-bottom: 4px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-height: 240px;
  overflow-y: auto;
  z-index: 100;
  box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
}

.slash-popup-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 12px;
  cursor: pointer;
  transition: background var(--transition);
}

.slash-popup-item:hover,
.slash-popup-item.selected {
  background: var(--bg-tertiary);
}

.slash-popup-item .cmd-name {
  color: var(--accent);
  font-weight: 600;
  font-size: var(--font-size-base);
  min-width: 80px;
}

.slash-popup-item .cmd-desc {
  color: var(--text-muted);
  font-size: var(--font-size-sm);
}

/* System messages */
.message.system {
  align-self: stretch;
  max-width: 100%;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  font-size: var(--font-size-sm);
}

.message.system strong {
  color: var(--text-primary);
}

.message.system code {
  color: var(--accent);
  background: var(--bg-secondary);
  padding: 1px 4px;
  border-radius: 3px;
}

/* Message wrapper alignment */
.message-wrapper.user {
  align-self: flex-end;
}

.message-wrapper.assistant {
  align-self: flex-start;
}

/* Message action buttons (copy, edit) */
.message-actions {
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity var(--transition);
  align-self: flex-end;
}

.message-wrapper:hover .message-actions {
  opacity: 1;
}

/* User message actions align right */
.message-wrapper.user .message-actions {
  align-self: flex-end;
}

/* Assistant message actions align left */
.message-wrapper.assistant .message-actions {
  align-self: flex-start;
}

.msg-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
}

.msg-action-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.msg-action-btn.copied {
  color: var(--success);
}

.msg-action-btn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  fill: currentColor;
}

/* Streaming text cursor */
.streaming-cursor::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--accent);
}

@keyframes blink {
  50% { opacity: 0; }
}

/* Tool event in chat (collapsible) */
.tool-event-group {
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  margin: 4px 0;
  overflow: hidden;
}

.tool-event-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background-color: var(--bg-tertiary);
  cursor: pointer;
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  user-select: none;
}

.tool-event-header:hover {
  color: var(--text-secondary);
}

.tool-event-body {
  padding: 8px 10px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  background-color: var(--bg-secondary);
  display: none;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 200px;
  overflow-y: auto;
}

.tool-event-body.open {
  display: block;
}

/* Code blocks in assistant messages */
.message.assistant pre {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius);
  padding: 12px;
  overflow-x: auto;
  margin: 8px 0;
}

.message.assistant code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
}

.message.assistant p code {
  background-color: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 3px;
}

/* ── Settings Page ──────────────────────────────────────────── */

.settings-section {
  margin-bottom: 32px;
}

.config-view {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  white-space: pre-wrap;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  max-height: 400px;
  overflow-y: auto;
}

.hook-editor {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hook-group {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
}

.hook-group label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 600;
  text-transform: uppercase;
}

.hook-group textarea {
  width: 100%;
  padding: 8px;
  background-color: var(--bg-input);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  resize: vertical;
  min-height: 60px;
}

.hook-group textarea:focus {
  border-color: var(--accent);
}

.assistant-mode-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
  margin-bottom: 12px;
}

.assistant-toggle,
.assistant-field {
  display: flex;
  align-items: center;
  gap: 8px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 12px;
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.assistant-field {
  flex-direction: column;
  align-items: flex-start;
}

.assistant-field input[type="number"],
.assistant-field input[type="text"] {
  width: 100%;
  padding: 8px;
  background-color: var(--bg-input);
  color: var(--text-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
}

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

.assistant-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  padding: 8px 16px;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background-color: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}

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

.btn-danger {
  background-color: var(--error-muted);
  color: var(--error);
  border-color: rgba(248, 81, 73, 0.35);
}

.btn-danger:hover {
  background-color: var(--error);
  color: white;
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--accent-muted);
  border-color: var(--accent);
}

/* ── Sessions Page ──────────────────────────────────────────── */

.session-actions {
  display: flex;
  gap: 6px;
}

.session-actions button {
  padding: 4px 10px;
  font-size: var(--font-size-sm);
}

.session-detail {
  margin-top: 24px;
}

.session-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.message-history {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 60vh;
  overflow-y: auto;
  padding: 12px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

/* ── Empty States ───────────────────────────────────────────── */

.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-muted);
  font-size: var(--font-size-base);
}

/* ── Event Stream ──────────────────────────────────────── */
.event-stream {
  max-height: 300px;
  overflow-y: auto;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  font-size: var(--font-size-sm);
  font-family: var(--font-mono);
}

.event-row {
  padding: 4px 8px;
  border-bottom: 1px solid var(--border-light);
  white-space: pre-wrap;
  word-break: break-word;
}

.event-row:last-child {
  border-bottom: none;
}

.event-level-error { color: var(--error); }
.event-level-warn { color: var(--warning); }
.event-level-info { color: var(--text-secondary); }

/* ── Model Metrics Summary ─────────────────────────────── */
.metrics-summary {
  display: flex;
  gap: 24px;
  margin-bottom: 12px;
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.metrics-summary .metric {
  display: flex;
  gap: 6px;
}

.metrics-summary .metric-value {
  font-weight: 600;
  color: var(--text-primary);
}

.assistant-health-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.assistant-chip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 12px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: var(--font-size-sm);
}

.assistant-chip-label {
  color: var(--text-secondary);
}

.assistant-chip-value {
  font-weight: 700;
  color: var(--text-primary);
}

/* ── Responsive: Mobile ─────────────────────────────────────── */

@media (max-width: 768px) {
  .sidebar {
    width: 60px;
    min-width: 60px;
  }

  .sidebar-header {
    padding: 12px 8px;
    text-align: center;
  }

  .logo {
    font-size: var(--font-size-base);
  }

  .nav-link {
    padding: 12px;
    justify-content: center;
  }

  .nav-link span:not(.nav-icon) {
    display: none;
  }

  .nav-icon {
    margin: 0;
  }

  .sidebar-footer {
    padding: 8px;
    text-align: center;
  }

  .conn-status {
    font-size: 0;
  }

  .content {
    padding: 16px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .chat-header {
    flex-wrap: wrap;
    gap: 8px;
  }

  .chat-header select {
    min-width: 0;
    flex: 1;
  }

  .chat-actions {
    padding: 6px 0;
  }

  .btn-action {
    padding: 8px 10px;
    min-height: 36px;
  }

  .slash-popup {
    max-height: 200px;
  }
}