:root {
  color-scheme: dark;
  --bg: #0d1328;
  --surface: #121b35;
  --surface-hover: #182345;
  --surface-raised: #1e2b53;
  --surface-soft: #0f1730;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --ink: #f3f6ff;
  --ink-muted: #a7b0cb;
  --ink-faint: #6f7aa3;
  --accent: #2a4290;
  --accent-strong: #1d2e66;
  --accent-dim: rgba(42, 66, 144, 0.22);
  --accent-mid: rgba(42, 66, 144, 0.42);
  --accent-soft: rgba(42, 66, 144, 0.14);
  --accent-faint: rgba(42, 66, 144, 0.08);
  --accent-gradient: linear-gradient(135deg, #243a81 0%, #2a4290 100%);
  --accent-ink: #eef2ff;
  --button-accent: #e3a528;
  --button-accent-strong: #d06519;
  --button-dim: rgba(227, 165, 40, 0.16);
  --button-mid: rgba(208, 101, 25, 0.26);
  --button-gradient: linear-gradient(135deg, #e3a528 0%, #d06519 100%);
  --button-ink: #211304;
  --danger: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 140ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
}

body {
  font-family: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

button,
textarea,
input {
  font: inherit;
}

.app-shell {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  background:
    radial-gradient(circle at top right, rgba(227, 165, 40, 0.1), transparent 20%),
    radial-gradient(circle at top left, var(--accent-soft), transparent 22%),
    var(--bg);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--border);
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--button-gradient);
  color: var(--button-ink);
  box-shadow: var(--shadow);
}

.brand-mark svg {
  width: 17px;
  height: 17px;
}

.brand-kicker {
  margin: 0 0 2px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.brand h1,
.chat-empty h2 {
  margin: 0;
  font-size: 14px;
  line-height: 1.1;
}

.brand-signature {
  display: block;
  height: 11px;
  margin-top: 4px;
  opacity: 0.96;
}

.context-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--accent-mid);
  border-radius: 999px;
  background: var(--accent-dim);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity var(--transition), transform var(--transition);
}

.context-badge.visible {
  opacity: 1;
  transform: scale(1);
}

.context-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: currentColor;
}

.tabs {
  display: flex;
  gap: 6px;
  padding: 8px 12px 8px;
  border-bottom: 1px solid var(--border);
}

.top-status-bar {
  padding: 8px 12px 0;
}

.tab {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--ink-muted);
  cursor: pointer;
  transition: color var(--transition), background var(--transition);
}

.tab:hover {
  background: var(--surface);
  color: var(--ink);
}

.tab.active {
  background: var(--surface-raised);
  color: var(--ink);
}

.tab svg {
  width: 14px;
  height: 14px;
}

.view {
  display: none;
  flex: 1;
  min-height: 0;
}

.view.active {
  display: flex;
}

.toolbox {
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  overflow-y: auto;
}

.selection-card,
.status-card,
.tool-card,
.chat-stream-mode,
.chat-input-wrap,
.chat-empty-icon {
  border: 1px solid var(--border);
  background: var(--surface);
}

.selection-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto auto;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: var(--radius);
}

.selection-card.has-selection {
  border-color: var(--accent-mid);
  background: linear-gradient(180deg, var(--accent-dim), var(--accent-faint));
}

.selection-icon,
.tool-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  flex: 0 0 auto;
}

.selection-icon {
  background: rgba(255, 255, 255, 0.03);
  color: var(--ink-muted);
}

.selection-icon svg,
.tool-icon svg,
.send-btn svg,
.icon-btn svg {
  width: 16px;
  height: 16px;
}

.selection-copy {
  min-width: 0;
}

.selection-label,
.section-label,
.tool-panel-kicker,
.field-label {
  margin: 0;
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.selection-text,
.status-text {
  margin: 0;
  line-height: 1.4;
}

.selection-text {
  color: var(--ink-muted);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.selection-count,
.tool-tag,
.stream-indicator {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 58px;
  padding: 4px 9px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--ink-muted);
  font-size: 11px;
  font-weight: 700;
}

.selection-card.has-selection .selection-count {
  background: var(--accent-mid);
  color: var(--accent);
}

.section-label {
  padding: 4px 4px 0;
}

.tool-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 36px;
  gap: 8px;
  align-items: stretch;
}

.tool-card {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 62px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: inherit;
  cursor: pointer;
  text-align: left;
  transition: background var(--transition), border-color var(--transition), transform 100ms ease;
}

.tool-card:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
}

.tool-card:active {
  transform: scale(0.988);
}

.tool-row.disabled {
  opacity: 0.56;
}

.tool-row.disabled .tool-card,
.tool-row.disabled .tool-help-btn {
  cursor: not-allowed;
}

.tool-row.disabled .tool-card:hover,
.tool-row.disabled .tool-help-btn:hover {
  background: var(--surface);
  border-color: var(--border);
}

.tool-copy {
  display: flex;
  align-items: center;
  min-width: 0;
  flex: 1;
}

.tool-name {
  font-size: 14px;
  font-weight: 600;
}

.tool-tail {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.tool-help-btn {
  display: grid;
  place-items: center;
  width: 36px;
  min-width: 36px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink-faint);
  font-size: 14px;
  font-weight: 700;
}

.tool-help-btn:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
  color: var(--ink);
}

.tool-arrow {
  color: var(--ink-faint);
  font-size: 20px;
  line-height: 1;
}

.tool-icon.green {
  background: rgba(42, 66, 144, 0.18);
  color: #8fa6f2;
}

.tool-icon.blue {
  background: rgba(42, 66, 144, 0.22);
  color: #b5c4ff;
}

.tool-icon.amber {
  background: rgba(227, 165, 40, 0.18);
  color: #f3c15c;
}

.tool-icon.violet {
  background: rgba(208, 101, 25, 0.16);
  color: #ffb270;
}

.tool-icon.red {
  background: rgba(208, 101, 25, 0.18);
  color: #ff9861;
}

.tool-icon.teal {
  background: rgba(42, 66, 144, 0.18);
  color: #78d3c4;
}

.tool-icon.sky {
  background: rgba(42, 66, 144, 0.18);
  color: #83c5ff;
}

.status-card {
  padding: 10px 12px;
  border-radius: var(--radius);
}

.status-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02));
}

.status-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink-faint);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  flex: 0 0 auto;
}

.status-inline .status-text {
  color: var(--ink-muted);
  font-size: 12px;
}

.status-text.is-error {
  color: var(--danger);
}

.chat-view {
  flex-direction: column;
  min-height: 0;
}

.chat-stream-mode {
  display: flex;
  gap: 8px;
  margin: 12px 12px 0;
  padding: 6px;
  border-radius: 999px;
}

.mode-chip,
.tone-chip,
.ghost-btn,
.primary-btn,
.icon-btn,
.send-btn {
  border: 0;
  cursor: pointer;
  transition: opacity var(--transition), transform 100ms ease, background var(--transition), color var(--transition);
}

.mode-chip {
  flex: 1;
  padding: 8px 10px;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-muted);
}

.mode-chip.selected {
  background: var(--surface-raised);
  color: var(--ink);
}

.mode-chip:disabled,
.ghost-btn:disabled,
.primary-btn:disabled,
.send-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 14px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-empty {
  margin: auto 0;
  padding: 24px 12px;
  text-align: center;
  color: var(--ink-muted);
}

.chat-empty-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  border-radius: 16px;
  color: var(--ink-faint);
}

.chat-empty p {
  max-width: 260px;
  margin: 10px auto 0;
  line-height: 1.5;
  font-size: 13px;
}

.chat-suggestions {
  display: grid;
  gap: 8px;
  margin: 16px auto 0;
  max-width: 280px;
}

.chat-suggestion {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink-muted);
  text-align: left;
  cursor: pointer;
}

.chat-suggestion:hover {
  background: var(--surface-hover);
  color: var(--ink);
}

.message {
  max-width: 88%;
  padding: 11px 14px;
  border-radius: 15px;
  line-height: 1.5;
  font-size: 13px;
  white-space: pre-wrap;
  word-break: break-word;
  animation: message-in 160ms ease;
}

.message.user {
  align-self: flex-end;
  background: var(--accent-gradient);
  color: var(--accent-ink);
  border-bottom-right-radius: 4px;
}

.message.assistant {
  align-self: flex-start;
  background: var(--surface-raised);
  color: var(--ink);
  border-bottom-left-radius: 4px;
}

.message.streaming::after {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-left: 8px;
  border: 2px solid var(--ink-faint);
  border-top-color: var(--ink);
  border-radius: 999px;
  vertical-align: -1px;
  animation: spin 700ms linear infinite;
}

.chat-input-wrap {
  display: flex;
  gap: 8px;
  align-items: flex-end;
  margin: 0 12px 12px;
  padding: 10px;
  border-radius: 16px;
}

.chat-input,
.panel-textarea,
.result-textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--ink);
  padding: 12px 13px;
  resize: vertical;
  line-height: 1.5;
}

.chat-input:focus,
.panel-textarea:focus,
.result-textarea:focus {
  outline: none;
  border-color: var(--accent-mid);
}

.chat-input {
  min-height: 42px;
  max-height: 120px;
  resize: none;
}

.send-btn {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  border-radius: 12px;
  background: var(--button-gradient);
  color: var(--button-ink);
}

.tool-panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  transform: translateX(100%);
  transition: transform 220ms cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 20;
}

.tool-panel.open {
  transform: translateX(0);
}

.tool-help-dialog {
  position: absolute;
  inset: 0;
  display: none;
  align-items: flex-end;
  padding: 14px;
  background: rgba(6, 7, 10, 0.72);
  z-index: 30;
}

.tool-help-dialog.open {
  display: flex;
}

.tool-help-card {
  width: 100%;
  padding: 14px;
  border: 1px solid var(--border-strong);
  border-radius: 18px;
  background:
    radial-gradient(circle at top right, rgba(227, 165, 40, 0.1), transparent 24%),
    var(--surface);
  box-shadow: var(--shadow);
}

.tool-help-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.tool-help-body {
  margin: 12px 0 0;
  color: var(--ink-muted);
  font-size: 13px;
  line-height: 1.55;
}

.tool-panel-header,
.tool-panel-footer {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.tool-panel-footer {
  border-top: 1px solid var(--border);
  border-bottom: 0;
}

.tool-panel-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-panel-title {
  margin: 3px 0 0;
  font-size: 16px;
}

.tool-panel-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tone-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.input-card,
.result-block {
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0.015));
}

.input-card {
  padding: 12px;
}

.input-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.input-card-meta,
.result-meta {
  margin: 4px 0 0;
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.45;
}

.prompt-card .panel-textarea,
.source-card .panel-textarea {
  margin-top: 10px;
}

.context-card .panel-textarea {
  margin-top: 10px;
}

.prompt-textarea {
  min-height: 88px;
  resize: vertical;
}

.context-textarea {
  min-height: 108px;
  resize: vertical;
}

.source-card {
  transition: border-color var(--transition), background var(--transition);
}

.source-card.is-collapsed {
  background: linear-gradient(180deg, rgba(42, 66, 144, 0.08), rgba(255, 255, 255, 0.015));
}

.source-card.is-collapsed .source-textarea {
  display: none;
}

.option-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tone-chip,
.option-chip {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--ink-muted);
}

.tone-chip.selected,
.option-chip.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
  color: var(--accent);
}

.ghost-btn,
.primary-btn,
.icon-btn {
  border-radius: var(--radius-sm);
}

.ghost-btn {
  padding: 10px 12px;
  background: var(--surface);
  color: var(--ink);
}

.ghost-btn.compact {
  padding: 8px 10px;
}

.primary-btn {
  width: 100%;
  padding: 12px 15px;
  background: var(--button-gradient);
  color: var(--button-ink);
  font-weight: 700;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  padding: 0;
  background: var(--surface);
  color: var(--ink);
}

.result-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  transition: border-color var(--transition), background var(--transition), transform var(--transition);
}

.result-head,
.result-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.result-head {
  align-items: flex-start;
}

.result-block.is-idle {
  background: linear-gradient(180deg, rgba(42, 66, 144, 0.06), rgba(255, 255, 255, 0.015));
}

.result-block.is-active {
  border-color: var(--accent-mid);
  background: linear-gradient(180deg, rgba(42, 66, 144, 0.12), rgba(255, 255, 255, 0.02));
}

.result-shell {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.result-status {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
}

.result-status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 74px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--ink);
  font-size: 11px;
  font-weight: 700;
  flex: 0 0 auto;
}

.result-status-text {
  color: var(--ink-muted);
  font-size: 12px;
  line-height: 1.4;
}

.result-status[data-state="running"] {
  border-color: var(--accent-mid);
  background: var(--accent-faint);
}

.result-status[data-state="running"] .result-status-badge {
  background: var(--accent-mid);
  color: var(--accent);
}

.result-status[data-state="success"] .result-status-badge {
  background: rgba(74, 222, 128, 0.16);
  color: #4ade80;
}

.result-status[data-state="fallback"] .result-status-badge {
  background: rgba(251, 191, 36, 0.16);
  color: #fbbf24;
}

.result-status[data-state="aborted"] .result-status-badge {
  background: rgba(255, 255, 255, 0.08);
  color: var(--ink-muted);
}

.result-status[data-state="error"] .result-status-badge {
  background: rgba(248, 113, 113, 0.16);
  color: var(--danger);
}

.stream-indicator {
  visibility: hidden;
}

.stream-indicator.visible {
  visibility: visible;
}

.result-editor {
  display: flex;
  flex-direction: column;
  gap: 10px;
  animation: result-expand 180ms ease;
}

.result-textarea {
  min-height: 210px;
  background: linear-gradient(180deg, var(--accent-soft), var(--accent-faint));
  border-color: var(--accent-mid);
}

.result-actions {
  justify-content: flex-start;
}

.result-actions .ghost-btn,
.result-actions .primary-btn {
  width: auto;
}

::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
}

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

@keyframes message-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes result-expand {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}