frontend/styles.css

/* ── PlainSQL — Pro AI Dark Theme ──────────────────────── */
/* Inspired by ChatGPT / Claude / Cursor                   */
/* Monochromatic indigo accent · No gradients on UI chrome  */

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

:root {
  --bg: #0a0a0a;
  --surface-1: #111111;
  --surface-2: #171717;
  --surface-3: #1e1e1e;
  --surface-4: #282828;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #ececec;
  --muted: #a1a1a1;
  --subtle: #737373;
  --faint: #525252;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-muted: rgba(99, 102, 241, 0.15);
  --accent-subtle: rgba(99, 102, 241, 0.08);
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #eab308;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --font: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", Consolas, monospace;
  --sidebar-w: 280px;
  --radius: 10px;
  --radius-sm: 6px;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
  cursor: pointer;
}

a {
  color: var(--accent);
  text-decoration: none;
}

/* ── Layout Shell ────────────────────────────────────────── */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  height: 100vh;
}

/* ── Sidebar ─────────────────────────────────────────────── */

.sidebar {
  border-right: 1px solid var(--line);
  background: var(--surface-1);
  display: flex;
  flex-direction: column;
  min-height: 0;
  z-index: 20;
}

.sidebar-head {
  padding: 16px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  flex-shrink: 0;
}

.brand-copy strong {
  display: block;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text);
}

.brand-copy span {
  display: block;
  margin-top: 2px;
  color: var(--subtle);
  font-size: 0.72rem;
}

.new-chat {
  width: 100%;
  margin-top: 14px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--text);
  min-height: 38px;
  padding: 0 12px;
  font-weight: 600;
  font-size: 0.82rem;
  transition: background 150ms ease, border-color 150ms ease;
}

.new-chat:hover {
  background: var(--surface-3);
  border-color: var(--accent);
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
}

/* Scrollbar styling */
.sidebar-scroll::-webkit-scrollbar,
.chat-scroll::-webkit-scrollbar,
.table-wrap::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.sidebar-scroll::-webkit-scrollbar-thumb,
.chat-scroll::-webkit-scrollbar-thumb,
.table-wrap::-webkit-scrollbar-thumb {
  background: var(--surface-4);
  border-radius: 6px;
}

.section {
  margin-bottom: 16px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px 8px;
  color: var(--subtle);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.history-list,
.saved-list {
  display: grid;
  gap: 2px;
}

.side-item {
  width: 100%;
  min-height: 36px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 8px 10px;
  cursor: pointer;
  display: flex;
  gap: 8px;
  align-items: center;
  transition: background 120ms ease, color 120ms ease;
}

.side-item:hover,
.side-item.active {
  background: var(--surface-3);
  color: var(--text);
}

.side-item.active {
  background: var(--accent-subtle);
  color: var(--accent-hover);
}

.side-item span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.8rem;
}

.side-item small {
  color: var(--faint);
  font-size: 0.7rem;
  margin-left: auto;
  flex-shrink: 0;
}

/* Schema panel */
.schema-panel {
  display: grid;
  gap: 8px;
  padding: 10px;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.field-label {
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 600;
}

.select {
  width: 100%;
  height: 36px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  color: var(--text);
  padding: 0 10px;
  outline: none;
  font-size: 0.8rem;
}

.schema-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--subtle);
  font-size: 0.7rem;
}

.sidebar-foot {
  padding: 12px 14px;
  border-top: 1px solid var(--line);
}

.system-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(34, 197, 94, 0.2);
  border-radius: var(--radius-sm);
  background: rgba(34, 197, 94, 0.06);
  color: var(--success);
  font-size: 0.72rem;
  font-weight: 700;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
}

.system-pill.warning {
  border-color: rgba(234, 179, 8, 0.25);
  background: rgba(234, 179, 8, 0.06);
  color: var(--warning);
}

.system-pill.warning .status-dot {
  background: var(--warning);
}

/* ── Workspace / Main Area ───────────────────────────────── */

.workspace {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-width: 0;
  min-height: 0;
  position: relative;
  background: var(--bg);
}

.topbar {
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  z-index: 12;
}

.mobile-menu {
  display: none;
  border: 1px solid var(--line);
  background: var(--surface-2);
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  font-size: 0.75rem;
}

.conversation-title {
  min-width: 0;
}

.conversation-title h1 {
  margin: 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
}

.conversation-title p {
  margin: 2px 0 0;
  color: var(--subtle);
  font-size: 0.74rem;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.chip {
  height: 28px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 600;
  white-space: nowrap;
}

.ghost-action {
  height: 30px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  padding: 0 12px;
  font-size: 0.74rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}

.ghost-action:hover {
  color: var(--text);
  border-color: var(--accent);
}

/* ── Chat Area ───────────────────────────────────────────── */

.chat-scroll {
  overflow-y: auto;
  padding: 32px 28px 180px;
  min-height: 0;
  scroll-behavior: smooth;
}

.chat-inner {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 24px;
}

/* ── Welcome Screen ──────────────────────────────────────── */

.welcome {
  min-height: calc(100vh - 280px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
  padding: 48px 20px;
}

.welcome-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--line-strong);
  background: var(--surface-2);
  color: var(--muted);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.72rem;
  font-weight: 600;
}

.welcome h2 {
  max-width: 520px;
  margin: 0;
  font-size: 1.6rem;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
}

.welcome h2 span {
  color: var(--accent);
}

.welcome p {
  max-width: 460px;
  margin: 0;
  color: var(--subtle);
  font-size: 0.88rem;
  line-height: 1.6;
}

.prompt-grid {
  width: min(640px, 100%);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 8px;
}

.prompt-card {
  min-height: 80px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-1);
  color: var(--text);
  padding: 14px;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: border-color 150ms ease, background 150ms ease;
}

.prompt-card:hover {
  border-color: var(--accent);
  background: var(--accent-subtle);
}

.prompt-card strong {
  font-size: 0.82rem;
  font-weight: 600;
}

.prompt-card span {
  color: var(--subtle);
  font-size: 0.74rem;
  line-height: 1.4;
}

/* ── Messages ────────────────────────────────────────────── */

.message {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  animation: rise 200ms ease both;
}

.message.user {
  grid-template-columns: minmax(0, 1fr) 30px;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--surface-3);
  color: var(--subtle);
  font-weight: 700;
  font-size: 0.62rem;
  border: 1px solid var(--line);
  flex-shrink: 0;
}

.avatar.ai {
  background: var(--accent-muted);
  border-color: rgba(99, 102, 241, 0.25);
  color: var(--accent-hover);
}

.bubble {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-1);
  padding: 14px 16px;
  line-height: 1.65;
  color: var(--text);
  font-size: 0.88rem;
}

.user .bubble {
  justify-self: end;
  max-width: min(640px, 92%);
  background: var(--accent-muted);
  border-color: rgba(99, 102, 241, 0.2);
}

.ai .bubble {
  width: 100%;
  background: transparent;
  border-color: var(--line);
}

.bubble-stream {
  color: var(--text);
  white-space: pre-wrap;
  min-height: 20px;
}

.typing-caret::after {
  content: "";
  display: inline-block;
  width: 2px;
  height: 1em;
  margin-left: 3px;
  vertical-align: -0.12em;
  background: var(--accent);
  animation: blink 800ms steps(2, start) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ── Loading State ───────────────────────────────────────── */

.loading-row {
  display: grid;
  gap: 10px;
}

.loading-copy {
  color: var(--subtle);
  font-size: 0.8rem;
  font-weight: 500;
}

.skeleton {
  height: 10px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--surface-3), var(--surface-4), var(--surface-3));
  background-size: 200% 100%;
  animation: shimmer 1.4s ease infinite;
}

.skeleton:nth-child(2) {
  width: 75%;
}

.skeleton:nth-child(3) {
  width: 50%;
}

@keyframes shimmer {
  from {
    background-position: 100% 0;
  }

  to {
    background-position: -100% 0;
  }
}

.loading-stage {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 600;
}

.loading-stage .spinner {
  width: 14px;
  height: 14px;
  border: 2px solid var(--surface-4);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ── Meta Row ────────────────────────────────────────────── */

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.meta {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  padding: 4px 10px;
  color: var(--subtle);
  font-size: 0.68rem;
  font-weight: 600;
}

.meta b {
  color: var(--text);
  font-family: var(--mono);
  font-weight: 600;
}

/* ── SQL / Result / Chart / Insight Blocks ────────────────── */

.sql-block,
.result-block,
.chart-block,
.insight-block,
.explanation-block,
.error-box {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-1);
  overflow: hidden;
}

.block-head {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--surface-2);
}

.block-title {
  color: var(--subtle);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.block-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.icon-button,
.small-button {
  min-height: 28px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  color: var(--muted);
  padding: 0 10px;
  cursor: pointer;
  font-size: 0.7rem;
  font-weight: 600;
  transition: color 120ms ease, border-color 120ms ease;
}

.icon-button:hover,
.small-button:hover {
  color: var(--text);
  border-color: var(--accent);
}

.small-button.active,
.chart-toggle.active {
  color: #fff;
  border-color: var(--accent);
  background: var(--accent);
}

/* SQL code */
pre {
  margin: 0;
  padding: 14px 16px;
  overflow: auto;
  color: #d4d4d8;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.kw {
  color: var(--accent-hover);
  font-weight: 600;
}

.num {
  color: #fbbf24;
}

.str {
  color: #34d399;
}

/* Result tables */
.table-wrap {
  overflow: auto;
  max-height: 360px;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 560px;
}

th,
td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface-2);
  color: var(--subtle);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

td {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.76rem;
}

tr:hover td {
  background: var(--accent-subtle);
}

/* Charts */
.chart-body {
  height: 320px;
  padding: 14px;
  background: var(--surface-1);
}

/* Insights */
.insight-block {
  padding: 12px 16px;
  background: var(--accent-subtle);
  border-color: rgba(99, 102, 241, 0.15);
}

.insight-title {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.insight-list {
  margin: 0;
  padding-left: 16px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.insight-list li+li {
  margin-top: 5px;
}

/* Explanation */
.explanation-block {
  padding: 12px 16px;
  background: rgba(234, 179, 8, 0.05);
  border-color: rgba(234, 179, 8, 0.12);
}

.explanation-block p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
  font-size: 0.84rem;
}

/* Errors */
.error-box {
  padding: 12px 16px;
  color: #fca5a5;
  background: rgba(239, 68, 68, 0.06);
  border-color: rgba(239, 68, 68, 0.2);
  font-size: 0.84rem;
  line-height: 1.5;
}

.empty-result {
  padding: 20px 16px;
  color: var(--muted);
  background: var(--surface-2);
  border-color: var(--line);
  text-align: center;
  font-size: 0.84rem;
}

/* Message actions (regenerate, copy) */
.message-actions {
  display: flex;
  gap: 6px;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.message-actions .small-button {
  font-size: 0.72rem;
  min-height: 26px;
  padding: 0 10px;
}

.feedback-group {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.feedback-btn {
  font-size: 0.85rem !important;
  padding: 0 6px !important;
  min-width: 30px;
  transition: all 0.2s ease;
  opacity: 0.55;
}

.feedback-btn:hover {
  opacity: 1;
  transform: scale(1.15);
}

.feedback-btn.active {
  opacity: 1;
  background: rgba(99, 102, 241, 0.25) !important;
  border-color: var(--accent) !important;
}

/* Delete chat button in sidebar */
.side-item {
  position: relative;
}

.side-item .delete-chat {
  display: none;
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 4px;
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  font-size: 0.65rem;
  cursor: pointer;
  place-items: center;
}

.side-item:hover .delete-chat {
  display: grid;
}

.side-item .delete-chat:hover {
  background: rgba(239, 68, 68, 0.3);
}

/* Keyboard shortcut badge */
.kbd {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 1px 5px;
  border: 1px solid var(--line-strong);
  border-radius: 4px;
  background: var(--surface-3);
  color: var(--faint);
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 600;
}

/* Summary strip */
.summary-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-top: 12px;
}

.summary-strip div {
  min-height: 64px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  padding: 10px;
}

.summary-strip span {
  color: var(--subtle);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.summary-strip strong {
  min-width: 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.86rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ── Composer ────────────────────────────────────────────── */

.composer {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px 28px 20px;
  background: linear-gradient(0deg, var(--bg) 78%, transparent);
  z-index: 10;
}

.composer-inner {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 8px;
}

.suggestions {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.suggestions::-webkit-scrollbar {
  display: none;
}

.suggestion {
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-2);
  color: var(--muted);
  min-height: 30px;
  padding: 0 12px;
  cursor: pointer;
  font-size: 0.74rem;
  font-weight: 600;
  transition: border-color 120ms ease, color 120ms ease;
}

.suggestion:hover {
  color: var(--text);
  border-color: var(--accent);
}

.composer-form {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface-1);
  padding: 8px 10px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  align-items: end;
  transition: border-color 200ms ease;
}

.composer-form:focus-within {
  border-color: var(--accent);
}

textarea {
  width: 100%;
  min-height: 42px;
  max-height: 150px;
  resize: none;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
  padding: 10px 8px 8px;
  line-height: 1.5;
  font-size: 0.88rem;
}

textarea::placeholder {
  color: var(--faint);
}

.send-button {
  width: 36px;
  height: 36px;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 120ms ease;
}

.send-button:hover {
  background: var(--accent-hover);
}

.send-button:disabled {
  background: var(--surface-4);
  color: var(--faint);
  cursor: not-allowed;
}

.composer-hint {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--faint);
  font-size: 0.68rem;
  padding: 0 4px;
}

/* ── Toasts ──────────────────────────────────────────────── */

.toasts {
  position: fixed;
  right: 16px;
  bottom: 16px;
  display: grid;
  gap: 8px;
  z-index: 100;
  max-width: min(340px, calc(100vw - 32px));
}

.toast {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text);
  padding: 10px 14px;
  font-size: 0.8rem;
  animation: rise 160ms ease both;
}

.toast.success {
  border-color: rgba(34, 197, 94, 0.3);
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.35);
}

/* ── Scrim (mobile sidebar backdrop) ─────────────────────── */

.scrim {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  z-index: 15;
}

/* ── Workspace Metrics (sidebar) — kept minimal ──────────── */

.workspace-card {
  display: grid;
  gap: 10px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
}

.metric-grid div {
  min-height: 56px;
  display: grid;
  align-content: center;
  gap: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-1);
  padding: 8px;
}

.metric-grid strong {
  font-family: var(--mono);
  font-size: 0.96rem;
  color: var(--text);
}

.metric-grid span {
  color: var(--subtle);
  font-size: 0.66rem;
  font-weight: 700;
  text-transform: uppercase;
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 4px;
}

.pipeline span {
  min-height: 24px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  color: var(--faint);
  font-size: 0.6rem;
  font-weight: 700;
}

.pipeline span.active {
  background: var(--accent-muted);
  color: var(--accent);
}

/* ── Command Strip (welcome) ─────────────────────────────── */

.command-strip {
  width: min(640px, 100%);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.command-strip span {
  min-height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
}

/* ── Responsive ──────────────────────────────────────────── */

@media (max-width: 1100px) {
  .top-actions .chip:nth-child(n+3) {
    display: none;
  }
}

@media (max-width: 920px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(84vw, 300px);
    transform: translateX(-102%);
    transition: transform 180ms ease;
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
  }

  body.sidebar-open .scrim {
    display: block;
  }

  .mobile-menu {
    display: grid;
    place-items: center;
  }

  .topbar {
    padding: 0 16px;
  }

  .top-actions .chip:nth-child(n+2) {
    display: none;
  }

  .chat-scroll {
    padding: 20px 16px 180px;
  }

  .composer {
    padding: 14px 16px;
  }

  .prompt-grid {
    grid-template-columns: 1fr;
  }

  .welcome {
    min-height: calc(100vh - 300px);
  }

  .welcome h2 {
    font-size: 1.35rem;
  }

  .summary-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .conversation-title p {
    display: none;
  }

  .top-actions {
    display: none;
  }

  .message,
  .message.user {
    grid-template-columns: 1fr;
  }

  .avatar {
    display: none;
  }

  .user .bubble {
    max-width: 100%;
  }

  .composer-hint {
    display: none;
  }

  .welcome h2 {
    font-size: 1.2rem;
  }

  .chat-scroll {
    padding-bottom: 190px;
  }

  .command-strip,
  .summary-strip {
    grid-template-columns: 1fr;
  }

  .prompt-card {
    min-height: 68px;
  }

  table {
    min-width: 480px;
  }
}