/* ============================================================
   Agentic Dashboard — Design System
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Backgrounds */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-surface: #1c2128;
  --bg-hover: #252c35;
  --bg-input: #0d1117;

  /* Text */
  --text-primary: #e6edf3;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --text-inverse: #0d1117;

  /* Accent */
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-muted: #1f3a5f;

  /* Status */
  --status-success: #3fb950;
  --status-warning: #d29922;
  --status-error: #f85149;
  --status-info: #58a6ff;

  /* Agent roles */
  --agent-planner: #bc8cff;
  --agent-coder: #3fb950;
  --agent-collector: #d29922;
  --agent-reviewer: #f778ba;
  --agent-orchestrator: #58a6ff;

  /* Event types */
  --event-lifecycle: #58a6ff;
  --event-content: #3fb950;
  --event-tool: #d29922;
  --event-orchestration: #bc8cff;
  --event-error: #f85149;
  --event-keepalive: #6e7681;

  /* Borders */
  --border: #30363d;
  --border-subtle: #21262d;

  /* Misc */
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;
  --shadow: 0 2px 8px rgba(0,0,0,.3);
  --transition: 150ms ease;
  --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;

  /* Layout */
  --sidebar-width: 260px;
  --inspector-width: 340px;
  --toolbar-height: 48px;
}

/* --- Light theme --- */
[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f6f8fa;
  --bg-surface: #ffffff;
  --bg-hover: #f3f4f6;
  --bg-input: #f6f8fa;
  --text-primary: #1f2328;
  --text-secondary: #656d76;
  --text-muted: #8b949e;
  --text-inverse: #ffffff;
  --accent: #0969da;
  --accent-hover: #0550ae;
  --accent-muted: #ddf4ff;
  --border: #d0d7de;
  --border-subtle: #e1e4e8;
  --shadow: 0 1px 3px rgba(0,0,0,.12);
  --bg-surface: #f6f8fa;
}

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

html, body {
  height: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow: hidden;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ============================================================
   Layout — 3-column grid
   ============================================================ */
#app {
  display: grid;
  grid-template-rows: var(--toolbar-height) 1fr;
  grid-template-columns: var(--sidebar-width) 1fr var(--inspector-width);
  grid-template-areas:
    "toolbar toolbar toolbar"
    "sidebar main inspector";
  height: 100vh;
}

#toolbar   { grid-area: toolbar; }
#sidebar   { grid-area: sidebar; }
#main      { grid-area: main; }
#inspector { grid-area: inspector; }

/* ============================================================
   Toolbar
   ============================================================ */
#toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.toolbar-brand {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-primary);
  white-space: nowrap;
}

.toolbar-separator {
  width: 1px;
  height: 20px;
  background: var(--border);
}

.toolbar-session-id {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.toolbar-session-id:hover { background: var(--bg-hover); }

.toolbar-spacer { flex: 1; }

.toolbar-actions {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* ============================================================
   Sidebar
   ============================================================ */
#sidebar {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow: hidden;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.sidebar-header h3 {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
}

.session-list {
  flex: 1;
  overflow-y: auto;
  padding: 6px;
}

.session-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}
.session-item:hover { background: var(--bg-hover); }
.session-item.active {
  background: var(--accent-muted);
  color: var(--accent);
}

.session-item .delete-btn {
  margin-left: auto;
  opacity: 0;
  transition: opacity var(--transition);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 4px;
  border-radius: var(--radius-sm);
}
.session-item:hover .delete-btn { opacity: 1; }
.session-item .delete-btn:hover { color: var(--status-error); }

.sidebar-footer {
  padding: 10px 14px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================================
   Status Dot
   ============================================================ */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.idle      { background: var(--status-success); }
.status-dot.active    { background: var(--status-success); }
.status-dot.executing { background: var(--status-warning); animation: pulse 1.5s infinite; }
.status-dot.completed { background: var(--text-muted); }
.status-dot.error     { background: var(--status-error); }
.status-dot.connected { background: var(--status-success); }
.status-dot.disconnected { background: var(--status-error); }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

/* ============================================================
   Main Panel
   ============================================================ */
#main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-primary);
}

/* --- Chat messages --- */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--text-muted);
  gap: 8px;
}
.chat-empty .icon { font-size: 40px; opacity: .3; }
.chat-empty p { font-size: 13px; }

.message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 14px;
  line-height: 1.6;
  word-wrap: break-word;
}
.message.user {
  align-self: flex-end;
  background: var(--accent);
  color: var(--text-inverse);
  border-bottom-right-radius: 4px;
}
.message.assistant {
  align-self: flex-start;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-bottom-left-radius: 4px;
}
.message.assistant .agent-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  padding: 1px 6px;
  border-radius: 3px;
  margin-bottom: 6px;
}
.message.system {
  align-self: center;
  background: transparent;
  color: var(--text-muted);
  font-size: 12px;
  padding: 4px 12px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}

/* Markdown inside messages */
.message h1, .message h2, .message h3 {
  margin: 8px 0 4px;
  font-size: 14px;
  font-weight: 700;
}
.message h3 { font-size: 13px; }
.message p { margin: 4px 0; }
.message ul, .message ol { padding-left: 20px; margin: 4px 0; }
.message pre {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  margin: 8px 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
}
.message code {
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--bg-primary);
  padding: 1px 5px;
  border-radius: 3px;
}
.message pre code { background: none; padding: 0; }
.message strong { font-weight: 700; }

/* --- Execution indicator --- */
.execution-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  font-size: 12px;
  color: var(--text-secondary);
  align-self: flex-start;
}
.execution-indicator .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Chat input --- */
.chat-input-area {
  padding: 12px 24px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.chat-input-wrapper {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.chat-input-wrapper textarea {
  flex: 1;
  resize: none;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  border-radius: var(--radius);
  padding: 10px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.5;
  min-height: 42px;
  max-height: 160px;
  outline: none;
  transition: border-color var(--transition);
}
.chat-input-wrapper textarea:focus { border-color: var(--accent); }
.chat-input-wrapper textarea::placeholder { color: var(--text-muted); }
.chat-input-wrapper textarea:disabled {
  opacity: .5;
  cursor: not-allowed;
}

/* ============================================================
   Event Log (collapsible, below chat)
   ============================================================ */
.event-log-panel {
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.event-log-panel.open { max-height: 280px; }

.event-log-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-subtle);
  user-select: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.event-log-header .chevron {
  transition: transform var(--transition);
  font-size: 10px;
}
.event-log-panel.open .event-log-header .chevron { transform: rotate(180deg); }

.event-log-filters {
  display: flex;
  gap: 4px;
  padding: 6px 12px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-subtle);
}

.event-filter-btn {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.event-filter-btn.active {
  background: var(--accent-muted);
  color: var(--accent);
  border-color: var(--accent);
}

.event-log-entries {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.event-entry {
  display: flex;
  gap: 8px;
  padding: 3px 6px;
  border-radius: var(--radius-sm);
  align-items: flex-start;
}
.event-entry:hover { background: var(--bg-hover); }

.event-time { color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }
.event-type-badge {
  font-size: 10px;
  padding: 0 6px;
  border-radius: 3px;
  font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
}
.event-data {
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  cursor: pointer;
}
.event-data.expanded {
  white-space: pre-wrap;
  word-break: break-all;
}

/* Event type colors */
.event-type-badge.lifecycle { background: rgba(88,166,255,.15); color: var(--event-lifecycle); }
.event-type-badge.content   { background: rgba(63,185,80,.15); color: var(--event-content); }
.event-type-badge.tool      { background: rgba(210,153,34,.15); color: var(--event-tool); }
.event-type-badge.orchestration { background: rgba(188,140,255,.15); color: var(--event-orchestration); }
.event-type-badge.error     { background: rgba(248,81,73,.15); color: var(--event-error); }
.event-type-badge.keepalive { background: rgba(110,118,129,.1); color: var(--event-keepalive); }

/* ============================================================
   Inspector (right panel)
   ============================================================ */
#inspector {
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-left: 1px solid var(--border);
  overflow-y: auto;
}

.inspector-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 13px;
}

.inspector-section {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.inspector-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.inspector-field {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 13px;
}
.inspector-field .label {
  color: var(--text-secondary);
}
.inspector-field .value {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-primary);
}

/* --- Status badge --- */
.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 10px;
  text-transform: capitalize;
}
.badge.idle      { background: rgba(63,185,80,.15); color: var(--status-success); }
.badge.active    { background: rgba(63,185,80,.15); color: var(--status-success); }
.badge.executing { background: rgba(210,153,34,.15); color: var(--status-warning); }
.badge.completed { background: rgba(110,118,129,.15); color: var(--text-muted); }
.badge.error     { background: rgba(248,81,73,.15); color: var(--status-error); }
.badge.pending   { background: rgba(110,118,129,.1); color: var(--text-muted); }
.badge.planning  { background: rgba(188,140,255,.15); color: var(--agent-planner); }
.badge.reviewing { background: rgba(247,120,186,.15); color: var(--agent-reviewer); }
.badge.failed    { background: rgba(248,81,73,.15); color: var(--status-error); }

/* --- Agent timeline --- */
.timeline {
  position: relative;
  padding-left: 20px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-step {
  position: relative;
  padding: 6px 0 12px;
}
.timeline-step::before {
  content: '';
  position: absolute;
  left: -17px;
  top: 10px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg-secondary);
}
.timeline-step.active::before {
  border-color: var(--status-warning);
  background: var(--status-warning);
  animation: pulse 1.5s infinite;
}
.timeline-step.completed::before {
  border-color: var(--status-success);
  background: var(--status-success);
}
.timeline-step.failed::before {
  border-color: var(--status-error);
  background: var(--status-error);
}

.timeline-step-header {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}
.timeline-step-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
  line-height: 1.4;
}
.timeline-tools {
  margin-top: 4px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}
.tool-chip {
  font-size: 10px;
  font-family: var(--font-mono);
  padding: 1px 6px;
  border-radius: 3px;
  background: rgba(210,153,34,.1);
  color: var(--event-tool);
  border: 1px solid rgba(210,153,34,.2);
}

/* --- Agent role badge --- */
.role-badge {
  font-size: 10px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 3px;
  text-transform: uppercase;
  letter-spacing: .3px;
}
.role-badge.planner    { background: rgba(188,140,255,.15); color: var(--agent-planner); }
.role-badge.coder      { background: rgba(63,185,80,.15); color: var(--agent-coder); }
.role-badge.collector  { background: rgba(210,153,34,.15); color: var(--agent-collector); }
.role-badge.reviewer   { background: rgba(247,120,186,.15); color: var(--agent-reviewer); }
.role-badge.orchestrator { background: rgba(88,166,255,.15); color: var(--agent-orchestrator); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--bg-surface);
  color: var(--text-primary);
  font-size: 13px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn:hover { background: var(--bg-hover); }
.btn:disabled { opacity: .4; cursor: not-allowed; }

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

.btn-danger {
  color: var(--status-error);
  border-color: transparent;
  background: transparent;
}
.btn-danger:hover { background: rgba(248,81,73,.1); }

.btn-sm { padding: 3px 10px; font-size: 12px; }
.btn-icon {
  padding: 4px 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: 16px;
}
.btn-icon:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ============================================================
   Modal
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s ease;
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }

.modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  width: 520px;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,.4);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
}
.modal-header h2 { font-size: 15px; font-weight: 600; }

.modal-body { padding: 18px; }

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--border-subtle);
}

/* --- Form fields --- */
.form-group {
  margin-bottom: 14px;
}
.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}
.form-group textarea,
.form-group input {
  width: 100%;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-primary);
  border-radius: var(--radius);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  outline: none;
  transition: border-color var(--transition);
}
.form-group textarea:focus,
.form-group input:focus { border-color: var(--accent); }
.form-group textarea { min-height: 80px; resize: vertical; }
.form-group .error-text {
  font-size: 11px;
  color: var(--status-error);
  margin-top: 3px;
}

.rules-list { display: flex; flex-direction: column; gap: 6px; }
.rule-row {
  display: flex;
  gap: 6px;
  align-items: center;
}
.rule-row input { flex: 1; }

/* ============================================================
   JSON tree viewer
   ============================================================ */
.json-tree details { margin-left: 14px; }
.json-tree summary {
  cursor: pointer;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 12px;
  user-select: none;
}
.json-tree summary:hover { color: var(--text-primary); }
.json-tree .json-key { color: var(--accent); }
.json-tree .json-string { color: var(--status-success); }
.json-tree .json-number { color: var(--agent-planner); }
.json-tree .json-bool { color: var(--status-warning); }
.json-tree .json-null { color: var(--text-muted); }
.json-tree .json-leaf {
  margin-left: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 1px 0;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 1200px) {
  #app {
    grid-template-columns: var(--sidebar-width) 1fr;
    grid-template-areas:
      "toolbar toolbar"
      "sidebar main";
  }
  #inspector { display: none; }
}
@media (max-width: 768px) {
  #app {
    grid-template-columns: 1fr;
    grid-template-areas:
      "toolbar"
      "main";
  }
  #sidebar { display: none; }
}

/* ============================================================
   Utility
   ============================================================ */
.hidden { display: none !important; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mono { font-family: var(--font-mono); }
.text-muted { color: var(--text-muted); }
.text-sm { font-size: 12px; }
.mt-2 { margin-top: 8px; }
.gap-4 { gap: 4px; }