*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, sans-serif;
  background: #0b0d12;
  color: #e6e8f2;
  height: 100vh;
}

.app {
  height: 100vh;
  padding: 12px;
}

.app-shell {
  height: calc(100vh - 24px);
  display: flex;
  flex-direction: row;
  gap: 12px;
}

.app-sidebar {
  width: 220px;
  min-width: 220px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 12px;
  padding: 12px 16px;
  border: 1px solid #d9e1ec;
  border-radius: 14px;
  background: #f7f9fc;
}

.sidebar-brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-title {
  font-size: 14px;
  font-weight: 700;
  color: #111827;
}

.nav-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: #6b7280;
}

.nav-actions {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}

.nav-btn {
  border: 1px solid #c7d5e8;
  background: #ffffff;
  color: #1f2937;
  border-radius: 10px;
  padding: 10px 14px;
  font-size: 12px;
  cursor: pointer;
  text-align: left;
}

.nav-btn-active {
  background: #2563eb;
  border-color: #2563eb;
  color: #ffffff;
}

.page-shell {
  flex: 1;
  min-height: 0;
}

/* Workspace */
.chat-workspace {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #10131b;
  border: 1px solid #232a3b;
  border-radius: 14px;
  overflow: hidden;
}

.workspace-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 12px 16px;
  background: #0d1017;
  border-bottom: 1px solid #232a3b;
}

.header-title {
  font-size: 14px;
  font-weight: 600;
  color: #dde3ff;
}

.header-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: #7f89a8;
}

.session-badge {
  font-size: 11px;
  color: #8f96af;
  font-family: monospace;
  border: 1px solid #2f3850;
  border-radius: 999px;
  padding: 4px 8px;
}

.workspace-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  flex: 1;
  min-height: 0;
}

.conversation-pane,
.reasoning-pane {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.conversation-pane {
  border-right: 1px solid #232a3b;
}

.pane-title {
  font-size: 12px;
  font-weight: 600;
  color: #98a3c7;
  letter-spacing: 0.02em;
  padding: 10px 14px;
  border-bottom: 1px solid #232a3b;
  background: #0f131d;
}

.conversation-list,
.reasoning-list {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.conversation-item {
  border-radius: 10px;
  padding: 10px 12px;
  border: 1px solid #273047;
  background: #131827;
  color: #dbe1f5;
}

.assistant-item {
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}

.assistant-item:hover {
  border-color: #4e5f8d;
  background: #161d30;
}

.active-item {
  border-color: #7288c9;
  background: #1a2238;
}

.user-item {
  border-color: #34466f;
  background: #18213a;
}

.item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}

.item-label {
  font-size: 11px;
  font-weight: 600;
  color: #9eb2f7;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.item-meta {
  font-size: 11px;
  color: #8f96af;
  font-family: monospace;
}

.item-content {
  font-size: 13px;
  color: #e2e7fb;
  white-space: pre-wrap;
  line-height: 1.45;
  word-break: break-word;
}

.final-render {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.artifact-panel {
  border: 1px solid #d8e3f2;
  border-radius: 10px;
  background: #f8fbff;
  padding: 10px;
}

.artifact-title {
  font-size: 12px;
  font-weight: 700;
  color: #1e3a5f;
  margin-bottom: 8px;
}

.artifact-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.artifact-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid #c9d9ee;
  border-radius: 8px;
  background: #ffffff;
  padding: 8px 10px;
  color: #1d4ed8;
  text-decoration: none;
}

.artifact-link:hover {
  border-color: #93b2db;
  background: #f4f8ff;
}

.artifact-name {
  font-size: 13px;
  font-weight: 600;
  color: #0f172a;
  word-break: break-word;
}

.artifact-size {
  font-size: 12px;
  color: #475569;
  white-space: nowrap;
}

.result-rich {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.result-heading {
  font-weight: 700;
  color: #eaf0ff;
  letter-spacing: 0.01em;
}

.result-heading.h1 { font-size: 18px; }
.result-heading.h2 { font-size: 16px; }
.result-heading.h3 { font-size: 14px; color: #cbd8ff; }
.result-heading.h4 { font-size: 13px; color: #b8c7ef; }

.result-text {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.5;
  color: #dbe5ff;
}

.result-inline-bold {
  font-weight: 700;
}

.result-inline-code {
  display: inline-block;
  padding: 1px 5px;
  border-radius: 6px;
  background: #e8eef8;
  color: #1e3a5f;
  font-size: 0.95em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.result-list {
  margin: 0;
  padding-left: 18px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  color: #d6e0ff;
  font-size: 12px;
  line-height: 1.5;
}

.result-quote {
  margin: 0;
  border-left: 3px solid #5674bc;
  background: #121c33;
  color: #c9d9ff;
  padding: 8px 10px;
  border-radius: 6px;
  font-size: 12px;
  line-height: 1.5;
}

.result-code-wrap {
  border: 1px solid #2d6248;
  border-radius: 8px;
  background: #0d1813;
  overflow: hidden;
}

.result-code-lang {
  padding: 6px 10px;
  font-size: 11px;
  color: #8fe5b1;
  border-bottom: 1px solid #2d6248;
  font-family: monospace;
  text-transform: uppercase;
}

.result-code {
  margin: 0;
  padding: 10px;
  font-size: 12px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  color: #b4f2ce;
}

.result-seq-wrap {
  border: 1px solid #3f6f5a;
  border-radius: 8px;
  background: #0f1c18;
  overflow: hidden;
}

.result-seq {
  margin: 0;
  padding: 10px;
  color: #8ef3b8;
  font-size: 12px;
  line-height: 1.45;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  white-space: pre-wrap;
  word-break: break-all;
}

.result-table-wrap {
  overflow-x: auto;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  color: #dce4ff;
  border: 1px solid #3a4b72;
  border-radius: 8px;
  overflow: hidden;
}

.result-table th,
.result-table td {
  padding: 8px 10px;
  border: 1px solid #2f3d5f;
  text-align: left;
  vertical-align: top;
  white-space: normal;
  word-break: break-word;
}

.result-table th {
  background: #1b2742;
  color: #c9d8ff;
  font-weight: 600;
}

.result-table tr:nth-child(even) td {
  background: #121b2f;
}

.reasoning-card {
  position: relative;
  border: 1px solid #273047;
  border-radius: 10px;
  background: #121927;
  padding: 10px 12px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

.reasoning-summary {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.summary-chip {
  font-size: 11px;
  color: #bfc9ef;
  background: #182037;
  border: 1px solid #324267;
  border-radius: 999px;
  padding: 2px 8px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.reasoning-progress {
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: #111b2f;
  border: 1px solid #273a62;
  overflow: hidden;
}

.reasoning-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, #5e78c9, #6dd4a2);
  box-shadow: 0 0 10px rgba(109, 212, 162, 0.5);
}

.reasoning-timeline {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.timeline-item {
  position: relative;
  padding-left: 20px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: -10px;
  width: 2px;
  background: linear-gradient(180deg, #3a4f82, #243252);
}

.timeline-item:last-child::before {
  bottom: 22px;
}

.timeline-node {
  position: absolute;
  left: 2px;
  top: 14px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid #7d90c9;
  background: #0f1422;
  box-shadow: 0 0 0 3px rgba(125, 144, 201, 0.15);
}

.live-step .timeline-node {
  border-color: #63d9a5;
  box-shadow: 0 0 0 3px rgba(99, 217, 165, 0.2), 0 0 10px rgba(99, 217, 165, 0.45);
}

.card-subtitle {
  font-size: 11px;
  color: #95a3cc;
  margin-bottom: 8px;
}

.card-icon {
  position: absolute;
  right: 12px;
  top: 38px;
  font-size: 16px;
  opacity: 0.9;
}

.state-pill {
  font-size: 10px;
  color: #c5d2fc;
  border: 1px solid #425486;
  background: #17233f;
  border-radius: 999px;
  padding: 2px 7px;
  letter-spacing: 0.04em;
}

.live-pill {
  color: #bcffe1;
  border-color: #328a66;
  background: #133425;
}

.tool-preview {
  font-size: 11px;
  line-height: 1.4;
  color: #ffe4b7;
  border: 1px dashed #7f5d2b;
  border-radius: 7px;
  padding: 6px 8px;
  margin-bottom: 8px;
  background: rgba(127, 93, 43, 0.12);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.card-tag {
  font-size: 11px;
  font-weight: 600;
  color: #b7c6f8;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.thinking-card { border-color: #33405f; background: #121b2c; }
.code-card { border-color: #234035; background: #101c18; }
.observation-card { border-color: #27445a; background: #0f1a23; }
.tool-card { border-color: #4f3b1e; background: #1e1811; }
.result-card { border-color: #275238; background: #111f17; }
.error-card { border-color: #5b2a2a; background: #231313; }

.thinking-card .card-tag,
.thinking-card .card-subtitle {
  color: #9c87ff;
}

.observation-card .card-tag,
.observation-card .card-subtitle {
  color: #3fa7d6;
}

.tool-card .card-tag,
.tool-card .card-subtitle {
  color: #c7893c;
}

.thinking-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-block {
  border: 1px solid #3a4d78;
  border-radius: 8px;
  background: #16233f;
  padding: 8px 10px;
}

.task-title {
  font-size: 11px;
  font-weight: 600;
  color: #b5c8ff;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.task-block ul {
  margin-left: 16px;
  color: #dbe4ff;
  font-size: 13px;
  line-height: 1.45;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.task-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: #dbe4ff;
  font-size: 13px;
  line-height: 1.45;
}

.task-check {
  display: inline-flex;
  width: 16px;
  color: #9eddb8;
  font-weight: 700;
}

.plain-block {
  border: 1px solid #2b3550;
  border-radius: 8px;
  background: #0e1422;
  padding: 10px;
  color: #cfd7f2;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 12px;
  line-height: 1.55;
}

.planning-block {
  border-color: #5c46c9;
  background: linear-gradient(180deg, rgba(92, 70, 201, 0.14), rgba(14, 20, 34, 0.94));
}

.planning-text {
  color: #d4c7ff;
  font-weight: 600;
}

.reasoning-rich {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.observation-block {
  border-color: #31516a;
  background: #0c1520;
}

.observation-heading {
  font-weight: 700;
  letter-spacing: 0.01em;
}

.observation-heading.level-1 {
  font-size: 15px;
  color: #8ed7ff;
}

.observation-heading.level-2 {
  font-size: 13px;
  color: #6fc6f3;
}

.observation-heading.level-3,
.observation-heading.level-4 {
  font-size: 12px;
  color: #8bcfbc;
}

.observation-note {
  border: 1px solid #315a45;
  border-radius: 8px;
  background: rgba(37, 89, 62, 0.18);
  color: #b8f2cc;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.5;
}

.observation-list {
  margin-top: -2px;
}

.visualization-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.visualization-caption {
  font-size: 12px;
  font-weight: 600;
  color: #93c5fd;
}

.visualization-link {
  display: block;
  border: 1px solid #31516a;
  border-radius: 10px;
  overflow: hidden;
  background: #0c1520;
}

.visualization-image {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: contain;
  background: #0b1220;
}

.tool-activity-card {
  border: 1px solid #7f5d2b;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(127, 93, 43, 0.2), rgba(30, 24, 17, 0.96));
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tool-activity-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.tool-activity-label {
  font-size: 11px;
  font-weight: 700;
  color: #ffd892;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tool-activity-state {
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.tool-activity-state.running {
  color: #fff4d6;
  background: rgba(255, 193, 7, 0.18);
  border: 1px solid rgba(255, 208, 99, 0.55);
}

.tool-activity-state.finished {
  color: #d9ffe7;
  background: rgba(34, 197, 94, 0.16);
  border: 1px solid rgba(99, 217, 165, 0.35);
}

.tool-activity-name-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.tool-activity-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #ffd064;
  box-shadow: 0 0 0 0 rgba(255, 208, 100, 0.6);
}

.tool-activity-live .tool-activity-dot {
  animation: toolPulse 1.4s infinite ease-out;
}

.tool-activity-name {
  color: #fff1ca;
  font-size: 14px;
  font-weight: 700;
}

.tool-activity-track {
  position: relative;
  height: 8px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(255, 214, 153, 0.08);
  border: 1px solid rgba(255, 214, 153, 0.15);
}

.tool-activity-wave {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 28%;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(255, 214, 153, 0), rgba(255, 214, 153, 0.9), rgba(255, 214, 153, 0));
  opacity: 0.85;
}

.tool-activity-live .tool-activity-wave {
  animation: toolWave 1.8s linear infinite;
}

.tool-activity-live .wave-2 {
  animation-delay: 0.45s;
}

.tool-activity-live .wave-3 {
  animation-delay: 0.9s;
}

.tool-activity-card:not(.tool-activity-live) .tool-activity-wave {
  left: 36%;
  opacity: 0.5;
}

.tool-activity-desc {
  color: #f7e7c0;
  font-size: 12px;
  line-height: 1.55;
  white-space: pre-wrap;
  word-break: break-word;
}

@keyframes toolPulse {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(255, 208, 100, 0.55);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 10px rgba(255, 208, 100, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 208, 100, 0);
  }
}

@keyframes toolWave {
  0% {
    left: -30%;
  }
  100% {
    left: 102%;
  }
}

.code-lang {
  color: #7be0a0;
  font-family: monospace;
  font-size: 11px;
  border: 1px solid #2d6248;
  border-radius: 999px;
  padding: 2px 8px;
}

.copy-btn {
  position: absolute;
  top: 10px;
  right: 12px;
  font-size: 11px;
  border: 1px solid #2d6248;
  border-radius: 6px;
  background: transparent;
  color: #7be0a0;
  padding: 3px 8px;
  cursor: pointer;
}

.code-block {
  border: 1px solid #2d6248;
  border-radius: 8px;
  background: #0b1411;
  padding: 10px;
  color: #a8efc5;
  font-family: monospace;
  font-size: 12px;
  line-height: 1.6;
  overflow-x: auto;
}

.code-grid {
  display: grid;
  grid-template-columns: 40px 1fr;
  border: 1px solid #2d6248;
  border-radius: 8px;
  overflow: hidden;
}

.code-grid .code-block {
  border: 0;
  border-radius: 0;
  margin: 0;
  min-width: 0;
}

.code-line-numbers {
  margin: 0;
  padding: 10px 8px;
  background: #0d1c15;
  border-right: 1px solid #2d6248;
  color: #5ca07a;
  font-size: 11px;
  line-height: 1.6;
  text-align: right;
  user-select: none;
}

.code-line-numbers span {
  display: block;
}

.result-content {
  color: #cbf8dc;
  font-size: 14px;
  white-space: pre-wrap;
  line-height: 1.55;
}

.tool-title {
  font-size: 13px;
  color: #ffd285;
  margin-bottom: 8px;
  font-weight: 600;
}

.empty-hint,
.running-hint {
  border: 1px dashed #354060;
  border-radius: 10px;
  padding: 10px;
  color: #91a0ca;
  font-size: 13px;
}

.streaming-indicator {
  display: flex;
  gap: 4px;
  padding: 6px 0;
}
.dot {
  width: 6px; height: 6px;
  background: #a78bfa;
  border-radius: 50%;
  animation: bounce 1.2s infinite ease-in-out;
}
.dot:nth-child(2) { animation-delay: 0.2s; }
.dot:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40% { transform: scale(1); opacity: 1; }
}

.input-dock {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 14px 16px;
  border-top: 1px solid #232a3b;
  background: #0e121b;
}

.file-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.file-row input[type="file"] {
  color: #cfd8f6;
  font-size: 12px;
}

.upload-hidden {
  display: none;
}

.upload-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.upload-btn {
  border: 1px solid #cfd8e5;
  background: #ffffff;
  color: #111827;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
}

.upload-btn:hover:not(:disabled) {
  border-color: #93a7c4;
  background: #f3f7ff;
}

.upload-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.file-hint {
  font-size: 12px;
  color: #8e98bc;
}

.composer-row {
  display: flex;
  gap: 10px;
  align-items: stretch;
}

.composer-row textarea {
  flex: 1;
  background: #12192a;
  border: 1px solid #2b3550;
  border-radius: 8px;
  color: #e6ebff;
  font-size: 13px;
  padding: 10px 12px;
  resize: none;
  outline: none;
  font-family: inherit;
  line-height: 1.5;
  min-height: 120px;
}
.composer-row textarea:focus { border-color: #7f93cf; }
.composer-row textarea:disabled { opacity: 0.5; cursor: not-allowed; }

.composer-row button {
  background: #6d5dfc;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0 20px;
  min-width: 120px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.composer-row button:hover:not(:disabled) { background: #5a4ce0; }
.composer-row button:disabled { opacity: 0.4; cursor: not-allowed; }

@media (max-width: 1080px) {
  .workspace-body {
    grid-template-columns: 1fr;
  }

  .conversation-pane {
    border-right: 0;
    border-bottom: 1px solid #232a3b;
    max-height: 38%;
  }
}

/* Light Theme Overrides */
body {
  background: #ffffff;
  color: #1f2937;
}

.chat-workspace {
  background: #ffffff;
  border: 1px solid #d9e1ec;
}

.workspace-header,
.pane-title,
.input-dock {
  background: #f7f9fc;
  border-color: #d9e1ec;
}

.header-title,
.item-content,
.result-heading,
.result-text,
.plain-block,
.code-block,
.result-content {
  color: #1f2937;
}

.header-subtitle,
.session-badge,
.item-meta,
.card-subtitle,
.running-hint,
.empty-hint,
.file-hint {
  color: #6b7280;
}

.session-badge,
.summary-chip,
.state-pill,
.code-lang {
  border-color: #cdd6e3;
  background: #eef3f9;
}

.conversation-pane {
  border-right: 1px solid #d9e1ec;
}

.conversation-item {
  background: #ffffff;
  border-color: #d9e1ec;
}

.assistant-item {
  background: #fbfcff;
}

.assistant-item:hover {
  border-color: #88a2c4;
  background: #f4f8ff;
}

.active-item {
  border-color: #5d7fae;
  background: #e8f1ff;
}

.user-item {
  border-color: #bfd2ea;
  background: #f4f8ff;
}

.item-label {
  color: #365ea8;
}

.assistant-item .item-content,
.assistant-item .result-rich,
.assistant-item .result-text,
.assistant-item .result-list,
.assistant-item .result-quote,
.assistant-item .result-table,
.assistant-item .result-table th,
.assistant-item .result-table td {
  color: #0f172a;
}

.assistant-item .result-heading {
  color: #0f172a;
}

.assistant-item .result-heading.h3,
.assistant-item .result-heading.h4 {
  color: #334155;
}

.assistant-item .result-list {
  color: #1e293b;
}

.assistant-item .result-quote {
  background: #eef4ff;
  border-left-color: #7c9ed6;
  color: #1e3a5f;
}

.assistant-item .result-table {
  background: #ffffff;
}

.assistant-item .result-table th {
  background: #dbe8f8;
  color: #0f172a;
}

.assistant-item .result-table tr:nth-child(even) td {
  background: #f6f9fc;
}

.reasoning-card {
  background: #ffffff;
  border-color: #d9e1ec;
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}

.thinking-card,
.code-card,
.observation-card,
.tool-card,
.result-card,
.error-card {
  background: #ffffff;
  border-color: #d9e1ec;
}

.thinking-card .card-tag,
.thinking-card .card-subtitle {
  color: #6d28d9;
}

.observation-card .card-tag,
.observation-card .card-subtitle {
  color: #0369a1;
}

.tool-card .card-tag,
.tool-card .card-subtitle {
  color: #b45309;
}

.timeline-item::before {
  background: #d5deeb;
}

.timeline-node {
  background: #ffffff;
  border-color: #8da7c7;
  box-shadow: 0 0 0 3px rgba(141, 167, 199, 0.18);
}

.tool-preview,
.plain-block,
.result-quote,
.task-block,
.result-code-wrap,
.result-seq-wrap,
.code-grid {
  background: #f8fafc;
  border-color: #d4deeb;
  color: #1f2937;
}

.planning-block {
  border-color: #c4b5fd;
  background: linear-gradient(180deg, #f5f3ff, #ffffff);
}

.planning-text {
  color: #6d28d9;
}

.observation-block {
  border-color: #cfe3f0;
  background: #f8fbfd;
}

.observation-heading.level-1 {
  color: #075985;
}

.observation-heading.level-2 {
  color: #0f766e;
}

.observation-heading.level-3,
.observation-heading.level-4 {
  color: #4d7c0f;
}

.observation-note {
  border-color: #b7d7c2;
  background: #f2fbf5;
  color: #166534;
}

.visualization-caption {
  color: #075985;
}

.visualization-link {
  border-color: #cfe3f0;
  background: #f8fbfd;
}

.visualization-image {
  background: #f8fbfd;
}

.tool-activity-card {
  border-color: #f3d7a2;
  background: linear-gradient(180deg, #fffaf0, #ffffff);
}

.tool-activity-label {
  color: #b45309;
}

.tool-activity-state.running {
  color: #92400e;
  background: #fff7e6;
  border-color: #f3c778;
}

.tool-activity-state.finished {
  color: #166534;
  background: #effcf3;
  border-color: #b7e4c7;
}

.tool-activity-dot {
  background: #f59e0b;
}

.tool-activity-name {
  color: #7c2d12;
}

.tool-activity-track {
  background: #fff7e8;
  border-color: #f4d7a1;
}

.tool-activity-wave {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0), rgba(245, 158, 11, 0.65), rgba(245, 158, 11, 0));
}

.tool-activity-desc {
  color: #5b3a10;
}

.result-table,
.result-table th,
.result-table td {
  border-color: #d4deeb;
  color: #1f2937;
}

.result-table th {
  background: #eef3f9;
}

.result-table tr:nth-child(even) td {
  background: #f9fbfd;
}

.composer-row textarea {
  background: #ffffff;
  border-color: #cfd8e5;
  color: #111827;
}

.composer-row textarea:focus {
  border-color: #6d8bb7;
}

.composer-row button {
  background: #2563eb;
}

.composer-row button:hover:not(:disabled) {
  background: #1d4ed8;
}

.converter-panel {
  border: 1px solid #d4deeb;
  border-radius: 10px;
  background: #f8fafc;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.converter-title {
  color: #111827;
  font-size: 13px;
  font-weight: 600;
}

.converter-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.converter-input,
.converter-select {
  height: 32px;
  border-radius: 8px;
  border: 1px solid #cfd8e5;
  background: #ffffff;
  color: #111827;
  padding: 0 10px;
  font-size: 12px;
}

.converter-input {
  min-width: 220px;
}

.converter-select {
  min-width: 120px;
}

.converter-file {
  font-size: 12px;
  color: #1f2937;
}

.secondary-btn {
  border: 1px solid #c7d5e8;
  background: #ffffff;
  color: #1f2937;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}

.secondary-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.tool-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid #d4deeb;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  background: #ffffff;
}

.tool-ready {
  border-color: #a8d0b8;
  background: #f3fcf5;
}

.tool-missing {
  border-color: #e5c6c6;
  background: #fff7f7;
}

.tool-status {
  color: #6b7280;
  font-size: 11px;
}

.panel-notice {
  font-size: 12px;
  color: #374151;
  border: 1px dashed #cfd8e5;
  border-radius: 8px;
  background: #ffffff;
  padding: 6px 8px;
}

.warning-banner {
  border: 1px solid #f5c56a;
  background: #fffaf0;
  color: #92400e;
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.5;
}

.primary-ghost-btn {
  border: 1px solid #2563eb;
  background: #eff6ff;
  color: #1d4ed8;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.section-title {
  color: #111827;
  font-size: 14px;
  font-weight: 700;
}

.feature-caption {
  color: #475569;
  font-size: 12px;
  line-height: 1.5;
}

.studio-page {
  height: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid #d9e1ec;
  border-radius: 14px;
  background: #ffffff;
  overflow: hidden;
}

.studio-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: #f8fafc;
}

.studio-summary-grid,
.studio-action-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

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

.studio-summary-card,
.studio-card,
.catalog-card {
  border: 1px solid #d4deeb;
  border-radius: 12px;
  background: #ffffff;
  padding: 14px;
}

.featured-summary,
.featured-card {
  background: linear-gradient(180deg, #fffaf0, #ffffff);
  border-color: #f1cf8a;
}

.summary-label {
  font-size: 12px;
  color: #64748b;
}

.summary-value {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 700;
  color: #0f172a;
}

.summary-note {
  margin-top: 8px;
  color: #475569;
  font-size: 12px;
  line-height: 1.5;
}

.catalog-toolbar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.catalog-search {
  width: 100%;
  height: 38px;
  border-radius: 10px;
  border: 1px solid #cfd8e5;
  background: #ffffff;
  color: #111827;
  padding: 0 12px;
  font-size: 13px;
}

.category-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.category-chip {
  border: 1px solid #d4deeb;
  background: #ffffff;
  color: #334155;
  border-radius: 999px;
  padding: 6px 10px;
  font-size: 12px;
  cursor: pointer;
}

.active-category-chip {
  background: #eff6ff;
  border-color: #93c5fd;
  color: #1d4ed8;
}

.featured-chip {
  border-color: #f1cf8a;
  background: #fffaf0;
}

.catalog-groups {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.catalog-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.catalog-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.catalog-group-title {
  font-size: 14px;
  font-weight: 700;
  color: #0f172a;
}

.catalog-group-subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: #64748b;
}

.catalog-card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.catalog-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.catalog-card-title {
  font-size: 15px;
  font-weight: 700;
  color: #111827;
}

.catalog-card-subtitle,
.catalog-card-desc {
  font-size: 12px;
  color: #64748b;
  line-height: 1.5;
}

.catalog-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-end;
}

.status-badge,
.source-badge,
.asset-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 8px;
  font-size: 11px;
  border: 1px solid #d4deeb;
  background: #f8fafc;
  color: #334155;
}

.status-ready {
  border-color: #a7f3d0;
  background: #ecfdf5;
  color: #047857;
}

.status-incomplete {
  border-color: #fecaca;
  background: #fef2f2;
  color: #b91c1c;
}

.catalog-meta-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.catalog-meta-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  color: #64748b;
}

.catalog-meta-body,
.catalog-meta-row code {
  display: block;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  background: #f8fafc;
  padding: 8px 10px;
  color: #0f172a;
  font-size: 11px;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
}

.catalog-asset-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.asset-on {
  background: #eefbf4;
  border-color: #b7e4c7;
  color: #166534;
}

@media (max-width: 1280px) {
  .studio-summary-grid,
  .studio-action-grid,
  .catalog-card-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 960px) {
  .app-shell {
    flex-direction: column;
  }

  .app-sidebar {
    width: auto;
    min-width: 0;
  }

  .nav-actions {
    flex-direction: row;
    flex-wrap: wrap;
  }
}