@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,600;0,6..72,700;1,6..72,400&family=Public+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg-main: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #21262d;
  --border-subtle: #30363d;
  --border-active: #484f58;
  --text-primary: #f4f3ef;
  --text-secondary: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #c86432;
  --accent-hover: #dd733d;
  --accent-glow: rgba(200, 100, 50, 0.15);
  --radius: 4px;
  --font-display: 'Newsreader', Georgia, serif;
  --font-body: 'Public Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 150ms ease;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

/* Header & Top Bar */
.top-nav {
  height: 56px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.brand-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-main);
  padding: 2px 6px;
  border-radius: var(--radius);
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
}

.user-identity {
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.user-role-tag {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  padding: 2px 6px;
  border-radius: var(--radius);
}

.logout-link {
  color: var(--text-muted);
  font-size: 13px;
}

.logout-link:hover {
  color: var(--text-primary);
}

/* Primary Layout Grid */
.app-layout {
  display: grid;
  grid-template-columns: 280px 1fr 340px;
  height: calc(100vh - 56px);
  overflow: hidden;
}

@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 240px 1fr;
  }
  .telemetry-sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
  .history-sidebar {
    display: none;
  }
}

/* Sidebar: Chats history */
.history-sidebar {
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

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

.sidebar-title {
  font-size: 14px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-new-chat {
  background-color: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-primary);
  padding: 6px 12px;
  font-size: 12px;
  border-radius: var(--radius);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all 150ms ease;
}

.btn-new-chat:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.chat-list {
  list-style: none;
  overflow-y: auto;
  flex: 1;
  padding: 8px;
}

.chat-item {
  padding: 10px 12px;
  margin-bottom: 4px;
  border-radius: var(--radius);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background-color 150ms ease;
}

.chat-item:hover {
  background-color: var(--bg-elevated);
}

.chat-item.active {
  background-color: var(--bg-main);
  border-color: var(--border-subtle);
  border-left: 3px solid var(--accent);
}

.chat-item-title {
  font-size: 13px;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-bottom: 4px;
}

.chat-item-meta {
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

/* Main Conversation Stage */
.main-stage {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-main);
  position: relative;
  overflow: hidden;
}

.stage-header {
  padding: 16px 24px;
  border-bottom: 1px solid var(--border-subtle);
  background-color: var(--bg-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.inquest-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
}

/* Messages Scroll Container */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.welcome-billboard {
  max-width: 680px;
  margin: 40px auto;
  padding: 32px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
}

.welcome-headline {
  font-size: 26px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.welcome-summary {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 20px;
}

@media (max-width: 640px) {
  .spec-grid {
    grid-template-columns: 1fr;
  }
}

.spec-box {
  padding: 12px;
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
}

.spec-box-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.spec-box-val {
  font-size: 13px;
  color: var(--text-primary);
  font-weight: 500;
}

/* Chat Message Bubbles */
.message-row {
  display: flex;
  flex-direction: column;
  max-width: 820px;
  width: 100%;
}

.message-row.user-row {
  align-self: flex-end;
}

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

.message-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 12px;
  font-family: var(--font-mono);
}

.message-sender-user {
  color: var(--accent);
  font-weight: 600;
}

.message-sender-assistant {
  color: var(--text-primary);
  font-weight: 600;
}

.message-time {
  color: var(--text-muted);
}

.message-card {
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border-subtle);
  line-height: 1.6;
  word-break: break-word;
}

.user-row .message-card {
  background-color: var(--bg-surface);
  border-color: var(--border-active);
  color: var(--text-primary);
}

.assistant-row .message-card {
  background-color: var(--bg-surface);
  border-left: 3px solid var(--accent);
  color: var(--text-primary);
}

/* Audit Trigger & Telemetry Toggle */
.audit-actions {
  margin-top: 8px;
  display: flex;
  gap: 12px;
}

.btn-inspect-grounding {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 4px;
}

.btn-inspect-grounding:hover {
  color: var(--accent);
}

/* Input Dock: Ask a Question */
.input-dock {
  padding: 16px 24px;
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}

.query-form {
  max-width: 820px;
  margin: 0 auto;
  position: relative;
}

.query-textarea {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 14px 120px 14px 16px;
  resize: none;
  min-height: 60px;
  max-height: 180px;
  line-height: 1.5;
  transition: border-color 150ms ease;
}

.query-textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-submit-query {
  position: absolute;
  right: 12px;
  bottom: 14px;
  background-color: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius);
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background-color 150ms ease;
  white-space: nowrap;
}

.btn-submit-query:hover {
  background-color: var(--accent-hover);
}

.btn-submit-query:disabled {
  background-color: var(--border-subtle);
  color: var(--text-muted);
  cursor: not-allowed;
}

.input-caption {
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
}

/* Telemetry Sidebar (Right Drawer) */
.telemetry-sidebar {
  background-color: var(--bg-surface);
  border-left: 1px solid var(--border-subtle);
  overflow-y: auto;
  padding: 16px;
}

.telemetry-header {
  font-family: var(--font-mono);
  font-size: 13px;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.telemetry-block {
  margin-bottom: 20px;
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  justify-content: space-between;
}

.telemetry-code {
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-secondary);
  overflow-x: auto;
  line-height: 1.5;
  max-height: 180px;
}

.node-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.node-chip {
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-primary);
}

.triple-item {
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 8px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
}

.triple-subject {
  color: var(--accent);
  font-weight: 600;
}

.triple-predicate {
  color: var(--text-muted);
}

.triple-object {
  color: var(--text-primary);
}

/* Signature Animation: Scanning line on telemetry */
.scan-container {
  position: relative;
  overflow: hidden;
}

.scan-line {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: scanSweep 2.4s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

@keyframes scanSweep {
  0% { transform: translateY(-10px); opacity: 0; }
  15% { opacity: 1; }
  85% { opacity: 1; }
  100% { transform: translateY(220px); opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .scan-line {
    animation: none;
    display: none;
  }
}

/* Login Page Styles */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background-color: var(--bg-main);
}

.login-card {
  width: 100%;
  max-width: 440px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  padding: 40px 36px;
}

.login-header {
  margin-bottom: 28px;
}

.login-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.login-title {
  font-size: 26px;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.login-subtitle {
  color: var(--text-secondary);
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.form-input {
  width: 100%;
  background-color: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 14px;
  transition: border-color 150ms ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn-primary {
  width: 100%;
  background-color: var(--accent);
  color: var(--text-primary);
  border: none;
  border-radius: var(--radius);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background-color 150ms ease;
}

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

.btn-primary:disabled {
  background-color: var(--border-subtle);
  color: var(--text-muted);
  cursor: not-allowed;
}

.alert-message {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 16px;
  display: none;
}

.alert-error {
  background-color: #3b1812;
  border: 1px solid #7a2b1c;
  color: #ffb4a2;
}

.alert-success {
  background-color: #12281a;
  border: 1px solid #1c592f;
  color: #a2e8b8;
}

.login-notice {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.5;
}