/* ==========================================================================
   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;
}

/* Individual message bubble */
.message {
  padding: 10px 14px;
  border-radius: var(--radius);
  max-width: 85%;
  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);
  }
}