/* NEXUS Terminal Interface - Clean PuTTY-style with premium fonts */

/* Premium font stack with optimal rendering */
:root {
  --terminal-font: 'Fira Code', 'IBM Plex Mono', 'JetBrains Mono', 'Consolas', 'Monaco', monospace;
  --terminal-bg: #0c0c0e;
  --terminal-surface: #111114;
  --terminal-border: #1a1a1f;
  --terminal-glow: rgba(20, 184, 166, 0.15);
  --scanline-opacity: 0.03;
}

/* Optimal font rendering for crisp terminal text */
.nexus-container,
.nexus-container * {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "liga" 1, "calt" 1; /* Enable ligatures for Fira Code */
}

.nexus-container {
  display: grid;
  grid-template-columns: 240px 1fr;
  height: calc(100vh - 56px);
  margin-top: 56px;
  background: var(--terminal-bg);
  position: relative;
}

/* Subtle CRT scanline effect */
.nexus-container::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 2px,
    rgba(0, 0, 0, var(--scanline-opacity)) 4px
  );
  pointer-events: none;
  z-index: 100;
}

@media (max-width: 800px) {
  .nexus-container {
    grid-template-columns: 1fr;
  }
  .nexus-sidebar {
    display: none;
  }
}

/* Sidebar - Terminal panel style */
.nexus-sidebar {
  background: var(--terminal-surface);
  border-right: 1px solid var(--terminal-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  font-family: var(--terminal-font);
  font-size: 12px;
}

.sidebar-section {
  padding: 1rem;
  border-bottom: 1px solid var(--terminal-border);
}

.sidebar-section:last-child {
  border-bottom: none;
  margin-top: auto;
}

.sidebar-title {
  font-family: var(--terminal-font);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent);
  margin-bottom: 0.75rem;
  opacity: 0.8;
}

/* Status Grid - Terminal indicators */
.status-grid {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.status-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--terminal-font);
  font-size: 11px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-dim);
}

.status-dot.online {
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse-glow 2s infinite;
}

.status-dot.degraded {
  background: #f59e0b;
  box-shadow: 0 0 6px #f59e0b;
}

.status-dot.offline {
  background: var(--danger);
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.status-label {
  color: var(--text-muted);
}

/* Quick Commands - Terminal buttons */
.quick-commands {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.quick-cmd {
  padding: 0.5rem 0.625rem;
  background: transparent;
  border: 1px solid var(--terminal-border);
  color: var(--text-muted);
  font-family: var(--terminal-font);
  font-size: 11px;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease;
}

.quick-cmd::before {
  content: "> ";
  color: var(--accent);
  opacity: 0.5;
}

.quick-cmd:hover {
  background: var(--terminal-glow);
  border-color: var(--accent);
  color: var(--text);
}

.quick-cmd:hover::before {
  opacity: 1;
}

/* Usage Display */
.usage-display {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.usage-bar {
  height: 3px;
  background: var(--terminal-border);
  border-radius: 1px;
  overflow: hidden;
}

.usage-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-light));
  transition: width 0.3s ease;
  box-shadow: 0 0 8px var(--accent);
}

.usage-text {
  font-family: var(--terminal-font);
  font-size: 11px;
  color: var(--text-dim);
}

/* Version Info */
.version-info {
  display: flex;
  justify-content: space-between;
  font-family: var(--terminal-font);
  font-size: 10px;
  color: var(--text-dim);
  opacity: 0.6;
}

/* Main Chat Area - Terminal window */
.nexus-main {
  display: flex;
  flex-direction: column;
  background: var(--terminal-bg);
  position: relative;
}

.chat-container {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem 2rem;
  font-family: var(--terminal-font);
}

/* Custom scrollbar for terminal feel */
.chat-container::-webkit-scrollbar {
  width: 8px;
}

.chat-container::-webkit-scrollbar-track {
  background: var(--terminal-bg);
}

.chat-container::-webkit-scrollbar-thumb {
  background: var(--terminal-border);
  border-radius: 4px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Welcome Screen - Terminal boot sequence aesthetic */
.chat-welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  height: 100%;
  max-width: 520px;
  margin: 0 auto;
  font-family: var(--terminal-font);
}

.welcome-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 1.5rem;
  opacity: 0.9;
  filter: drop-shadow(0 0 20px var(--accent));
}

.chat-welcome h2 {
  font-family: var(--terminal-font);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
  color: var(--accent);
}

.chat-welcome p {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.example-queries {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

.example-query {
  padding: 0.75rem 1rem;
  background: transparent;
  border: 1px solid var(--terminal-border);
  color: var(--text-muted);
  font-family: var(--terminal-font);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
  position: relative;
  padding-left: 2rem;
}

.example-query::before {
  content: "$";
  position: absolute;
  left: 0.75rem;
  color: var(--accent);
  opacity: 0.5;
}

.example-query:hover {
  background: var(--terminal-glow);
  border-color: var(--accent);
  color: var(--text);
}

.example-query:hover::before {
  opacity: 1;
}

/* Chat Messages - Terminal output style */
.chat-message {
  margin-bottom: 1.25rem;
  max-width: 900px;
  font-family: var(--terminal-font);
}

.chat-message.user {
  margin-left: auto;
}

.message-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.chat-message.user .message-header {
  justify-content: flex-end;
}

.message-sender {
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}

.chat-message.nexus .message-sender {
  color: var(--accent);
}

.message-time {
  font-size: 10px;
  color: var(--text-dim);
  opacity: 0.6;
}

.message-content {
  padding: 1rem 1.25rem;
  background: var(--terminal-surface);
  border: 1px solid var(--terminal-border);
  font-size: 13px;
  line-height: 1.7;
  border-radius: 2px;
}

.chat-message.user .message-content {
  background: rgba(20, 184, 166, 0.08);
  border-color: rgba(20, 184, 166, 0.2);
}

.chat-message.nexus .message-content {
  border-left: 2px solid var(--accent);
  box-shadow: inset 4px 0 12px -4px var(--terminal-glow);
}

/* Code blocks in messages - Terminal code style */
.message-content pre {
  background: var(--terminal-bg);
  padding: 1rem;
  margin: 0.75rem 0;
  overflow-x: auto;
  font-family: var(--terminal-font);
  font-size: 12px;
  border: 1px solid var(--terminal-border);
  border-radius: 2px;
}

.message-content code {
  font-family: var(--terminal-font);
  background: rgba(20, 184, 166, 0.1);
  padding: 0.125rem 0.375rem;
  font-size: 12px;
  border-radius: 2px;
  color: var(--accent-light);
}

.message-content pre code {
  background: none;
  padding: 0;
  color: var(--text);
}

/* Data tables in messages - Terminal table style */
.message-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 12px;
  font-family: var(--terminal-font);
}

.message-content th,
.message-content td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--terminal-border);
  text-align: left;
}

.message-content th {
  background: var(--terminal-bg);
  font-weight: 500;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.message-content tr:hover td {
  background: rgba(20, 184, 166, 0.03);
}

/* Typing indicator - Terminal cursor blink */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--terminal-font);
}

.typing-dots {
  display: flex;
  gap: 3px;
}

.typing-dots span {
  width: 4px;
  height: 4px;
  background: var(--accent);
  border-radius: 50%;
  animation: terminal-blink 1s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.15s; }
.typing-dots span:nth-child(3) { animation-delay: 0.3s; }

@keyframes terminal-blink {
  0%, 50%, 100% { opacity: 0.3; }
  25% { opacity: 1; }
}

/* Input Area - Terminal command line */
.chat-input-area {
  padding: 1rem 2rem 1.5rem;
  border-top: 1px solid var(--terminal-border);
  background: var(--terminal-surface);
}

.chat-form {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.chat-form input {
  flex: 1;
  padding: 0.875rem 1rem;
  padding-left: 2rem;
  background: var(--terminal-bg);
  border: 1px solid var(--terminal-border);
  color: var(--text);
  font-family: var(--terminal-font);
  font-size: 13px;
  border-radius: 2px;
  transition: all 0.15s ease;
}

.chat-form input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--terminal-glow), inset 0 0 20px var(--terminal-glow);
}

.chat-form input::placeholder {
  color: var(--text-dim);
  font-style: normal;
}

/* Command prompt indicator */
.chat-form {
  position: relative;
}

.chat-form::before {
  content: ">";
  position: absolute;
  left: calc(2rem + 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-family: var(--terminal-font);
  font-size: 13px;
  font-weight: 500;
  z-index: 1;
}

.send-btn {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border: none;
  color: #000;
  cursor: pointer;
  transition: all 0.15s ease;
  border-radius: 2px;
}

.send-btn:hover {
  background: var(--accent-light);
  box-shadow: 0 0 16px var(--accent);
}

.send-btn:disabled {
  background: var(--terminal-border);
  color: var(--text-dim);
  cursor: not-allowed;
  box-shadow: none;
}

.send-btn svg {
  width: 18px;
  height: 18px;
}

.input-hint {
  font-family: var(--terminal-font);
  font-size: 10px;
  color: var(--text-dim);
  margin-top: 0.5rem;
  opacity: 0.6;
}

/* Terminal cursor animation for empty state */
@keyframes cursor-blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

.chat-welcome h2::after {
  content: "_";
  animation: cursor-blink 1s infinite;
  color: var(--accent);
}