/* DataChat — shared dark theme styles */
:root {
  --bg-body: #0d1117;
  --bg-sidebar: #161b22;
  --bg-card: #21262d;
  --bg-input: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #1f6feb;
}

body {
  background: var(--bg-body);
  color: var(--text);
}

/* ─── Sidebar ─────────────────────────────────────── */
.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  min-height: 100vh;
}
.sidebar a {
  color: var(--text-muted);
  text-decoration: none;
}
.sidebar a:hover,
.sidebar a.active {
  color: var(--text);
  background: var(--bg-card);
}

/* Offcanvas sidebar on mobile */
.offcanvas.sidebar-mobile {
  background: var(--bg-sidebar);
  max-width: 280px;
}
.offcanvas.sidebar-mobile a {
  color: var(--text-muted);
  text-decoration: none;
}
.offcanvas.sidebar-mobile a:hover,
.offcanvas.sidebar-mobile a.active {
  color: var(--text);
  background: var(--bg-card);
}

/* Mobile nav bar */
.mobile-nav {
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
}

/* ─── Chat messages ───────────────────────────────── */
.chat-message {
  padding: 12px 16px;
  border-radius: 12px;
  margin-bottom: 8px;
  max-width: 85%;
  word-wrap: break-word;
}
.chat-message.user {
  background: var(--accent);
  margin-left: auto;
}
.chat-message.assistant {
  background: var(--bg-card);
}
.chat-message pre {
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  overflow-x: auto;
}
.chat-message code {
  font-size: 0.9em;
}

/* Tables in messages — horizontal scroll on mobile */
.chat-message .table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 8px 0;
}
.chat-message table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9em;
  white-space: nowrap;
}
.chat-message th,
.chat-message td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
}
.chat-message th {
  background: var(--bg-body);
}

/* ─── Artifacts (embedded files) ──────────────────── */
.artifact-embed {
  margin: 10px 0;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}
.artifact-iframe {
  width: 100%;
  height: 450px;
  border: none;
  background: #fff;
  border-radius: 8px 8px 0 0;
}
.artifact-link {
  display: block;
  padding: 6px 12px;
  font-size: 0.8em;
  color: var(--accent);
  background: var(--bg-sidebar);
  text-align: right;
}
.artifact-img {
  max-width: 100%;
  border-radius: 8px;
}
@media (max-width: 767.98px) {
  .artifact-iframe {
    height: 300px;
  }
}

/* ─── Chart ───────────────────────────────────────── */
.chart-toggle {
  display: inline-block;
  margin: 4px 0 8px;
  padding: 3px 10px;
  font-size: 0.8em;
  cursor: pointer;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
}
.chart-toggle:hover {
  color: var(--text);
  border-color: var(--accent);
}
.chart-container {
  position: relative;
  max-width: 100%;
  margin: 8px 0;
}
.chart-container canvas {
  max-height: 300px;
}

/* ─── Trace (thinking + tool calls) ──────────────── */
.trace-details {
  margin-top: 8px;
  border-top: 1px solid var(--border);
  padding-top: 6px;
}
.trace-details summary {
  font-size: 0.8em;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}
.trace-details summary:hover { color: var(--text); }
.trace-body {
  margin-top: 6px;
  max-height: 400px;
  overflow-y: auto;
}
.trace-block {
  margin-bottom: 6px;
  font-size: 0.82em;
}
.trace-block pre {
  background: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 6px 8px;
  margin: 2px 0 0;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow-y: auto;
  font-size: 0.9em;
}
.trace-label {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.85em;
}
.trace-thinking .trace-label { color: #b392f0; }
.trace-tool_use .trace-label { color: #79c0ff; }
.trace-tool_result .trace-label { color: #7ee787; }

/* ─── Input area ──────────────────────────────────── */
.chat-input {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  resize: none;
  overflow-y: hidden;
  min-height: 44px;
  max-height: 120px;
}
.chat-input:focus {
  background: var(--bg-input);
  border-color: var(--accent);
  color: var(--text);
  box-shadow: none;
}

/* ─── Buttons ─────────────────────────────────────── */
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
}

/* ─── Typing indicator ────────────────────────────── */
.typing-indicator { opacity: 0.6; }
.typing-indicator span { animation: blink 1.4s infinite; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 100% { opacity: 0.2; } 50% { opacity: 1; } }

/* ─── Form controls ──────────────────────────────── */
textarea.form-control,
input.form-control,
select.form-select {
  color: var(--text);
}

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

.spinner { display: none; }
.spinner.active { display: inline-block; }

/* ─── Chat layout ─────────────────────────────────── */
#chat-container {
  overflow-y: auto;
}

/* Desktop: sidebar visible, chat fills remaining height */
@media (min-width: 768px) {
  #chat-container {
    height: calc(100vh - 180px);
  }
  .mobile-nav { display: none !important; }
}

/* Mobile: no sidebar, full-screen chat, fixed bottom input */
@media (max-width: 767.98px) {
  .sidebar { display: none !important; }

  .main-content {
    padding: 12px !important;
    padding-bottom: 80px !important;
  }

  #chat-container {
    height: calc(100vh - 160px);
  }

  .chat-message {
    max-width: 95%;
    padding: 10px 12px;
    font-size: 0.95em;
  }

  #chat-form {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 8px 12px;
    background: var(--bg-sidebar);
    border-top: 1px solid var(--border);
    z-index: 100;
  }

  /* Stack new-chat form on mobile */
  .new-chat-form .row { flex-direction: column; }
  .new-chat-form .row > div { width: 100% !important; max-width: 100% !important; flex: 0 0 100%; }
}