:root {
  --bg: #d4d8dd;
  --bg-deep: #c2c8cf;
  --panel: #e9edf2;
  --panel-2: #dfe5ec;
  --line: #9ea9b7;
  --line-strong: #7f8da0;
  --text: #1f2a38;
  --text-muted: #4e5a69;
  --accent: #2f6ea9;
  --accent-2: #275b8b;
  --ok: #2f7c3d;
  --warn: #8f5a13;
  --error: #a0322b;
  --code-bg: #f5f7fa;
  --shadow: 0 4px 12px rgba(38, 55, 76, 0.2);
}

* {
  box-sizing: border-box;
}

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

body {
  background: linear-gradient(180deg, #e2e6eb 0%, var(--bg) 35%, var(--bg-deep) 100%);
  color: var(--text);
  font-family: "Bahnschrift", "Segoe UI", "Trebuchet MS", sans-serif;
  overflow: hidden;
}

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

.shell {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 1px;
  min-height: 100vh;
  padding: 1px;
}

.panel {
  background: linear-gradient(170deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: var(--shadow);
}

.menu-bar {
  display: flex;
  gap: 6px;
  padding: 8px;
}

.menu-item {
  border: 1px solid transparent;
  background: transparent;
  border-radius: 2px;
  padding: 6px 10px;
  cursor: default;
}

.menu-item:hover {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.6);
}

.toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  flex-wrap: wrap;
}

.toolbar-group {
  display: inline-flex;
  gap: 6px;
  padding-right: 8px;
  border-right: 1px solid var(--line);
}

.toolbar-group:last-child {
  border-right: none;
}

.tool-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 2px;
  padding: 6px 10px;
  cursor: pointer;
}

.tool-btn:hover {
  border-color: var(--line-strong);
}

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

.tool-btn.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.tool-btn.primary:hover {
  background: var(--accent-2);
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(280px, 1fr);
  gap: 8px;
  min-height: 0;
}

.main-column {
  display: grid;
  grid-template-rows: minmax(0, 3fr) minmax(160px, 1fr);
  gap: 8px;
  min-height: 0;
}

.main-pane,
.messages-pane,
.registers-pane {
  min-height: 0;
}

.main-pane {
  display: grid;
  grid-template-rows: auto 1fr auto;
}

.tabs,
.subtabs {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px;
  border-bottom: 1px solid var(--line);
}

.tab-btn,
.subtab-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 2px;
  padding: 5px 10px;
  cursor: pointer;
}

.tab-btn.active,
.subtab-btn.active {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
}

.tab-panel,
.subtab-panel {
  display: none;
  min-height: 0;
}

.tab-panel.active,
.subtab-panel.active {
  display: block;
  height: 100%;
}

.editor-wrap {
  height: 100%;
  padding: 8px;
}

#source-editor {
  width: 100%;
  height: 100%;
  resize: none;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 10px;
  background: var(--code-bg);
  color: var(--text);
  font-family: "Cascadia Code", "Consolas", "Lucida Console", monospace;
  font-size: 14px;
  line-height: 1.4;
}

.status-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding: 6px 10px;
  font-size: 12px;
  color: var(--text-muted);
}

.execute-wrap {
  display: grid;
  grid-template-rows: minmax(180px, 1fr) minmax(170px, 1fr);
  gap: 8px;
  padding: 8px;
  height: 100%;
}

.execute-top {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(200px, 1fr);
  gap: 8px;
  min-height: 0;
}

.segment-panel,
.labels-panel,
.data-panel,
.register-body,
.message-body {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: #fff;
  min-height: 0;
  overflow: auto;
}

.panel-title {
  border-bottom: 1px solid var(--line);
  margin: 0;
  padding: 8px 10px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--text-muted);
}

.table-wrap {
  padding: 4px;
  min-height: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

th,
td {
  border-bottom: 1px solid #eee3d7;
  padding: 6px 8px;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  background: #fcf6ef;
  z-index: 1;
}

.current-row {
  background: #fff6b2;
}

.labels-list {
  list-style: none;
  margin: 0;
  padding: 8px;
}

.labels-list li {
  padding: 6px 4px;
  border-bottom: 1px solid #eee3d7;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 12px;
}

.messages-pane {
  display: grid;
  grid-template-rows: auto 1fr;
}

.message-body {
  margin: 8px;
  padding: 10px;
  font-family: "Cascadia Code", "Consolas", monospace;
  font-size: 12px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.message-body.run {
  color: #1f3f74;
}

.message-body.mars {
  color: #4d341e;
}

.registers-pane {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 0;
}

.register-body {
  margin: 8px;
  min-height: 0;
}

.muted {
  color: var(--text-muted);
}

.tag {
  padding: 3px 8px;
  border-radius: 999px;
  font-size: 11px;
  border: 1px solid var(--line);
  background: #fff;
}

.tag.ok {
  color: var(--ok);
  border-color: #8eb497;
}

.tag.warn {
  color: var(--warn);
  border-color: #d6b181;
}

.tag.error {
  color: var(--error);
  border-color: #d9a2a0;
}

@media (max-width: 1100px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .main-column {
    grid-template-rows: minmax(380px, 1fr) minmax(180px, 0.5fr);
  }

  .execute-top {
    grid-template-columns: 1fr;
  }
}