/* ---------------------------------------------------------------
   Datalygence — AI Analyst chat UI
   Matches the main site theme (Inter / Poppins, blue primary 217 91% 50%)
   --------------------------------------------------------------- */

:root {
  /* Pulled from the main site `base.html` */
  --background: hsl(210 20% 98%);
  --foreground: hsl(220 20% 10%);
  --card: hsl(0 0% 100%);
  --card-foreground: hsl(220 20% 10%);
  --primary: hsl(217 91% 50%);
  --primary-hover: hsl(217 91% 45%);
  --primary-foreground: hsl(0 0% 100%);
  --secondary: hsl(220 14% 96%);
  --secondary-foreground: hsl(220 20% 10%);
  --muted: hsl(220 14% 96%);
  --muted-foreground: hsl(220 10% 46%);
  --accent: hsl(217 91% 95%);
  --accent-foreground: hsl(217 91% 40%);
  --border: hsl(220 13% 91%);
  --input: hsl(220 13% 91%);
  --ring: hsl(217 91% 50%);
  --danger: hsl(0 72% 51%);
  --danger-soft: hsl(0 92% 95%);
  --success: hsl(142 71% 45%);

  --radius: 0.75rem;
  --radius-sm: 0.5rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 2px hsl(220 20% 10% / 0.04);
  --shadow-md: 0 4px 16px hsl(220 20% 10% / 0.08);
  --shadow-card: 0 2px 12px -2px hsl(220 20% 10% / 0.08);
  --shadow-soft: 0 4px 20px -4px hsl(217 91% 50% / 0.15);

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Poppins', 'Inter', sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  font-size: 14px;
  color: var(--foreground);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); }

/* ---------------- Login ---------------- */
.login-wrap {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
  background: linear-gradient(180deg, hsl(217 91% 97%) 0%, hsl(220 20% 98%) 100%);
}
.login-card {
  width: 400px; background: var(--card); padding: 36px;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  text-align: center;
  border: 1px solid var(--border);
}
.login-card .brand-block {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; margin-bottom: 18px;
}
.login-card .brand-mark {
  width: 36px; height: 36px;
  background: var(--primary); color: var(--primary-foreground);
  border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-soft);
}
.login-card .brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  color: var(--primary);
  letter-spacing: -0.02em;
}
.login-card h1 { margin: 4px 0 6px; font-size: 22px; color: var(--foreground); }
.login-sub { color: var(--muted-foreground); margin: 0 0 22px; font-size: 14px; }
.login-card label {
  display: block; text-align: left; margin-bottom: 14px;
  color: var(--muted-foreground); font-size: 12px; font-weight: 500;
}
.login-card input {
  width: 100%; padding: 10px 12px; margin-top: 4px;
  border: 1px solid var(--input); border-radius: 8px; font-size: 14px;
  background: var(--card); color: var(--foreground);
  font-family: var(--font);
}
.login-card input:focus {
  outline: 2px solid var(--accent); border-color: var(--primary);
}
.login-btn {
  width: 100%; padding: 11px;
  background: var(--primary); color: var(--primary-foreground);
  border: none; border-radius: 8px; font-size: 14px; cursor: pointer;
  font-weight: 600; font-family: var(--font);
  transition: background 0.15s;
}
.login-btn:hover { background: var(--primary-hover); }
.login-error {
  background: var(--danger-soft); color: var(--danger); padding: 10px 12px;
  border-radius: 8px; margin-bottom: 14px; font-size: 13px;
}

/* ---------------- App shell ---------------- */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  height: 100vh;
  overflow: hidden;
}
.app.sidebar-collapsed { grid-template-columns: 64px 1fr; }
.app.sidebar-collapsed .sidebar { width: 64px; }
.app.sidebar-collapsed .brand-name,
.app.sidebar-collapsed .new-chat-btn span,
.app.sidebar-collapsed .conv-title,
.app.sidebar-collapsed .user-name { display: none; }
.app.sidebar-collapsed .new-chat-btn { justify-content: center; padding: 10px; }
.app.sidebar-collapsed .conv-item    { justify-content: center; padding: 10px; }
.app.sidebar-collapsed .conv-icon    { margin: 0; }
.app.sidebar-collapsed .sidebar-foot { justify-content: center; }
.app.sidebar-collapsed .sidebar-toggle i { transform: rotate(180deg); }

/* ---------------- Sidebar ---------------- */
.sidebar {
  background: var(--secondary);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  min-width: 0;
  transition: width 0.2s ease;
}
.sidebar-head {
  padding: 16px 14px;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  flex: 1; min-width: 0;
  text-decoration: none;
}
.brand-mark {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--primary); color: var(--primary-foreground);
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-soft);
}
.brand-mark i { width: 16px; height: 16px; }
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  color: var(--primary);
  letter-spacing: -0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-toggle {
  background: transparent; border: none;
  padding: 6px; border-radius: 6px;
  cursor: pointer; color: var(--muted-foreground);
  display: flex; align-items: center; justify-content: center;
}
.sidebar-toggle:hover { background: hsl(220 13% 88%); color: var(--foreground); }
.sidebar-toggle i { width: 16px; height: 16px; transition: transform 0.2s; }

.new-chat-form { padding: 0 12px 10px; }
.new-chat-btn {
  width: 100%;
  display: flex; align-items: center; gap: 8px;
  background: var(--card); color: var(--foreground);
  border: 1px solid var(--border);
  padding: 10px 12px; border-radius: 8px;
  font-size: 13px; cursor: pointer; font-weight: 500;
  font-family: var(--font);
  transition: all 0.15s;
}
.new-chat-btn:hover {
  background: var(--accent); border-color: var(--primary); color: var(--primary);
}
.new-chat-btn i { width: 16px; height: 16px; flex-shrink: 0; }

.conv-list { flex: 1; overflow-y: auto; padding: 4px 8px; }
.conv-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px; border-radius: 8px;
  color: var(--foreground); text-decoration: none;
  font-size: 13px; margin-bottom: 2px;
  transition: background 0.15s;
}
.conv-item:hover { background: hsl(220 13% 88%); }
.conv-item.active {
  background: var(--accent);
  color: var(--accent-foreground);
  font-weight: 500;
}
.conv-icon { width: 14px; height: 14px; flex-shrink: 0; color: var(--muted-foreground); }
.conv-item.active .conv-icon { color: var(--primary); }
.conv-title { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; flex: 1; min-width: 0; }
.conv-del-form { margin: 0; }
.conv-del {
  background: transparent; border: none; color: var(--muted-foreground);
  font-size: 16px; cursor: pointer; padding: 2px 6px; border-radius: 4px;
  opacity: 0; transition: opacity .15s;
  line-height: 1;
}
.conv-item:hover .conv-del { opacity: 1; }
.conv-del:hover { background: var(--danger-soft); color: var(--danger); }

.sidebar-foot {
  padding: 12px; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
}
.user { display: flex; align-items: center; gap: 10px; min-width: 0; flex: 1; }
.user-avatar {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--primary); color: var(--primary-foreground);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.user-name {
  font-size: 13px; font-weight: 500;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: var(--foreground);
}
.logout-btn {
  background: transparent; border: none; padding: 6px; border-radius: 6px;
  cursor: pointer; color: var(--muted-foreground);
  display: flex; align-items: center; justify-content: center;
}
.logout-btn:hover { color: var(--danger); background: var(--danger-soft); }
.logout-btn i { width: 16px; height: 16px; }

/* ---------------- Main chat ---------------- */
.chat {
  display: flex; flex-direction: column;
  height: 100vh; min-width: 0;
  background: var(--background);
}
.messages { flex: 1; overflow-y: auto; padding: 0; }

/* Landing page */
.landing-wrap {
  display: flex; flex-direction: column;
  align-items: center; justify-content: flex-start;
  min-height: 100%;
  padding: 60px 24px 40px;
  text-align: center;
}
.landing-brand {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, hsl(217 91% 55%), hsl(217 91% 40%));
  box-shadow: var(--shadow-soft);
  margin-bottom: 24px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--primary-foreground);
}
.landing-brand i { width: 28px; height: 28px; }
.landing-greeting {
  font-family: var(--font-display);
  font-size: 32px; font-weight: 700;
  color: var(--foreground);
  margin: 0 0 8px;
  line-height: 1.2;
}
.landing-subtitle {
  font-family: var(--font-display);
  font-size: 32px; font-weight: 700;
  color: var(--foreground);
  margin: 0 0 48px;
  line-height: 1.2;
}
.landing-subtitle .accent { color: var(--primary); }

.suggestions-wrap {
  max-width: 920px; width: 100%;
  margin-top: 16px;
}
.suggestions-label {
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--muted-foreground);
  margin-bottom: 14px; text-align: center;
}
.suggestions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}
.suggestion-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  text-align: left;
  transition: all 0.15s;
  box-shadow: var(--shadow-sm);
}
.suggestion-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}
.suggestion-icon {
  width: 32px; height: 32px;
  border-radius: 8px;
  background: var(--accent);
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 10px;
  color: var(--primary);
}
.suggestion-icon i { width: 16px; height: 16px; }
.suggestion-card p {
  margin: 0;
  font-size: 14px;
  color: var(--foreground);
  line-height: 1.45;
  font-weight: 500;
}

/* Message rows */
.msg-row {
  padding: 24px 0;
  border-bottom: 1px solid transparent;
}
.msg-row.assistant { background: var(--secondary); }
.msg-row.user      { background: var(--background); }
.msg {
  max-width: 860px; margin: 0 auto; padding: 0 28px;
  display: grid; grid-template-columns: 32px 1fr; gap: 14px;
}
.msg-avatar {
  width: 30px; height: 30px; border-radius: 8px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 700; flex-shrink: 0;
  margin-top: 2px;
}
.msg-avatar.user { background: hsl(220 13% 88%); color: var(--foreground); }
.msg-avatar.assistant {
  background: linear-gradient(135deg, hsl(217 91% 55%), hsl(217 91% 40%));
  color: var(--primary-foreground);
  box-shadow: var(--shadow-soft);
}
.msg-body { min-width: 0; }
.msg-content {
  font-size: 15px; line-height: 1.55;
  white-space: pre-wrap; word-wrap: break-word;
  color: var(--foreground);
}
.msg-content.error { color: var(--danger); }

.msg-row.user .msg-content {
  color: var(--primary);
  font-weight: 500;
}

.msg-meta { margin-top: 8px; color: var(--muted-foreground); font-size: 12px; }
.msg-meta-right { text-align: right; font-weight: 500; }

/* Collapsible sections */
.msg-block {
  margin-top: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.msg-block-head {
  padding: 10px 14px;
  background: hsl(220 14% 98%);
  font-size: 12px;
  color: var(--muted-foreground);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
  display: flex; align-items: center; justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.msg-block-head .caret { transition: transform .15s; }
.msg-block.collapsed .msg-block-head .caret { transform: rotate(-90deg); }
.msg-block.collapsed .msg-block-body { display: none; }
.msg-block.collapsed .msg-block-head { border-bottom: none; }
.msg-block-body { padding: 14px; }

pre.sql {
  margin: 0; padding: 14px;
  background: hsl(220 30% 12%); color: hsl(220 14% 90%);
  border-radius: 8px; overflow-x: auto;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6;
  white-space: pre;
}

/* Data table */
.data-table-wrap {
  overflow: auto; max-height: 460px;
  border-radius: 8px; border: 1px solid var(--border);
  background: var(--card);
}
.table-actions {
  display: flex; justify-content: flex-end;
  padding: 8px 12px;
  background: hsl(220 14% 98%);
  border-bottom: 1px solid var(--border);
  gap: 8px;
}
.download-btn {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 12px; font-weight: 500;
  color: var(--foreground);
  cursor: pointer;
  transition: all 0.15s;
  font-family: var(--font);
}
.download-btn:hover {
  background: var(--accent);
  border-color: var(--primary);
  color: var(--primary);
}
.download-btn i { width: 14px; height: 14px; flex-shrink: 0; }

table.data-table {
  width: 100%; border-collapse: collapse; font-size: 13px;
}
table.data-table th, table.data-table td {
  padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.data-table thead th {
  background: hsl(220 14% 98%);
  font-weight: 600; position: sticky; top: 0;
  color: var(--muted-foreground);
  text-transform: uppercase; font-size: 11px;
  letter-spacing: .04em;
}
table.data-table tbody tr:hover { background: hsl(220 14% 98%); }

.chart-wrap { width: 100%; min-height: 380px; }
.chart-hint { color: var(--muted-foreground); font-size: 12px; margin-top: 8px; }

/* ---------------- Composer ---------------- */
.composer-wrap {
  padding: 18px 24px 28px;
  background: linear-gradient(to top, var(--background) 70%, hsla(220 20% 98% / 0));
}
.composer {
  max-width: 760px; margin: 0 auto;
  display: flex; align-items: flex-end; gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: var(--shadow-md);
  min-height: 56px;
}
.composer:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--accent), var(--shadow-md);
}
.composer textarea {
  border: none; outline: none; resize: none;
  font-family: var(--font); font-size: 15px;
  line-height: 1.5; padding: 6px 4px;
  max-height: 220px; min-height: 28px;
  background: transparent; color: var(--foreground);
  flex: 1; min-width: 0;
}
.composer button {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: var(--primary-foreground);
  border: none; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: background 0.15s;
  flex-shrink: 0;
}
.composer button i { width: 16px; height: 16px; }
.composer button:disabled { opacity: 0.4; cursor: not-allowed; }
.composer button:hover:not(:disabled) { background: var(--primary-hover); }

.composer-hint {
  max-width: 760px; margin: 8px auto 0;
  font-size: 11px;
  color: var(--muted-foreground);
  text-align: center;
}
.composer-hint kbd {
  font-family: var(--mono); font-size: 10px;
  background: var(--secondary);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}

/* ---------------- Thinking indicator ---------------- */
.thinking-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 520px;
  box-shadow: var(--shadow-sm);
}
.thinking-block.collapsed .thinking-content { display: none; }
.thinking-block.collapsed .thinking-toggle i { transform: rotate(-90deg); }

.thinking-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 14px;
  background: var(--accent);
  cursor: pointer;
}
.thinking-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 600;
  color: var(--accent-foreground);
}

.spinning-wheel {
  width: 18px; height: 18px;
  color: var(--primary);
  animation: spin-wheel 1.2s linear infinite;
}
@keyframes spin-wheel {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.thinking-toggle {
  background: transparent; border: none;
  padding: 4px; cursor: pointer;
  color: var(--muted-foreground);
  display: flex; align-items: center; justify-content: center;
  border-radius: 4px;
}
.thinking-toggle:hover { background: hsl(220 13% 88% / 0.5); }
.thinking-toggle i { width: 14px; height: 14px; transition: transform 0.2s; }

.thinking-content { padding: 12px 16px; background: var(--card); }
.thinking-step {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 0;
  font-size: 13px; color: var(--foreground);
  transition: opacity 0.3s;
}
.step-indicator {
  width: 8px; height: 8px; border-radius: 50%;
  background: hsl(220 13% 86%);
  flex-shrink: 0;
}
.step-indicator.active {
  background: var(--primary);
  animation: pulse 1.2s infinite;
}
.step-indicator.complete { background: var(--success); }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.1); }
}

/* Responsive */
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .landing-greeting, .landing-subtitle { font-size: 24px; }
  .suggestions-grid { grid-template-columns: 1fr; }
}