/* 设备通信工作台共享外壳：导航、连接状态与基础控件
   视觉语言对齐工程工具台（Modern Tech Light）：
   冷灰蓝底 / 悬浮白卡 / 靛蓝渐变主操作 / 胶囊控件 / 柔和阴影 */
:root {
  --workbench-page: #edf0f5;
  --workbench-surface: #ffffff;
  --workbench-surface-soft: #f6f8fb;
  --workbench-surface-strong: #eef1f6;
  --workbench-ink: #0f1722;
  --workbench-muted: #64748b;
  --workbench-faint: #94a3b8;
  --workbench-line: #e2e8f0;
  --workbench-line-strong: #c3ccd9;
  /* 强调色：靛蓝（主操作、激活态、链接） */
  --workbench-accent: #4f46e5;
  --workbench-accent-strong: #3f3bcb;
  --workbench-accent-soft: #eef0fe;
  --workbench-accent-line: #c5cbf6;
  --workbench-accent-gradient: linear-gradient(135deg, #5850ec 0, #3b63f3 100%);
  --workbench-accent-gradient-hover: linear-gradient(135deg, #3f3bcb 0, #2f56d8 100%);
  /* 状态色：成功/连接沿用绿色语义，与工具台 ok 色板一致 */
  --workbench-green: #0e9f6e;
  --workbench-green-strong: #0a7d57;
  --workbench-green-bright: #10b981;
  --workbench-green-soft: #e2f6ee;
  --workbench-blue: #0284c7;
  --workbench-blue-soft: #e5f3fb;
  --workbench-amber: #c47a0a;
  --workbench-amber-soft: #fdf1dc;
  --workbench-red: #dc2640;
  --workbench-red-soft: #fdeaee;
  --workbench-dark: #1b232d;
  /* 终端区浅色化，与工具台 .well / .log 一致 */
  --workbench-terminal: #f6f8fb;
  --workbench-terminal-text: #0f1722;
  --workbench-terminal-muted: #64748b;
  --workbench-focus: #4f46e5;
  --workbench-mono: Consolas, "Courier New", monospace;
  --workbench-shadow-sm: 0 1px 2px rgba(15, 23, 34, 0.05);
  --workbench-shadow: 0 1px 2px rgba(15, 23, 34, 0.04), 0 8px 24px rgba(15, 23, 34, 0.05);
  --workbench-radius: 12px;
  --workbench-radius-sm: 8px;

  /* 兼容通用串口页既有变量，让旧控件沿用同一套色板 */
  --bg: var(--workbench-page);
  --bg-deep: var(--workbench-surface-soft);
  --surface-2: var(--workbench-surface-soft);
  --surface-3: var(--workbench-surface-strong);
  --border: var(--workbench-line);
  --border-bright: var(--workbench-line-strong);
  --text: var(--workbench-ink);
  --text-muted: var(--workbench-muted);
  --text-faint: var(--workbench-faint);
  --green: var(--workbench-green);
  --green-strong: var(--workbench-green-strong);
  --green-soft: var(--workbench-green-soft);
  --blue: var(--workbench-blue);
  --blue-soft: var(--workbench-blue-soft);
  --amber: var(--workbench-amber);
  --amber-soft: var(--workbench-amber-soft);
  --red: var(--workbench-red);
  --red-soft: var(--workbench-red-soft);
  --terminal: var(--workbench-terminal);
  --terminal-text: var(--workbench-terminal-text);
  --terminal-muted: var(--workbench-terminal-muted);
  --focus: var(--workbench-focus);
  --shadow-lg: 0 12px 36px rgba(15, 23, 34, 0.14);
}

body {
  background:
    radial-gradient(720px 300px at 12% -60px, rgba(79, 70, 229, 0.07), transparent 70%),
    radial-gradient(720px 300px at 88% -60px, rgba(2, 132, 199, 0.07), transparent 70%),
    var(--workbench-page);
  color: var(--workbench-ink);
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--workbench-focus);
  outline-offset: 2px;
}

button:disabled,
input:disabled,
select:disabled {
  opacity: 0.55;
}

/* ---------- 共享顶栏 ---------- */

.topbar,
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  min-height: 62px;
  align-items: center;
  gap: 24px;
  padding: 0 24px;
  border-bottom: 1px solid var(--workbench-line);
  background: rgb(255 255 255 / 94%);
  backdrop-filter: blur(10px);
}

.app-header::before {
  content: none;
}

.brand {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  position: relative;
  display: grid;
  width: 40px;
  height: 40px;
  flex: 0 0 auto;
  place-items: center;
  border: 0;
  border-radius: 10px;
  background: var(--workbench-accent-gradient);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.28);
  color: #ffffff;
  font: 800 10px/1 var(--workbench-mono);
  letter-spacing: 0;
}

.brand-mark::before,
.brand-mark::after {
  position: absolute;
  left: 7px;
  width: 26px;
  height: 2px;
  border: 0;
  border-radius: 0;
  background: rgb(255 255 255 / 85%);
  box-shadow: none;
  content: "";
}

.brand-mark::before {
  top: 8px;
}

.brand-mark::after {
  top: auto;
  right: auto;
  bottom: 8px;
}

.brand-copy,
.brand-text {
  display: grid;
  min-width: 0;
  gap: 1px;
}

.brand-copy strong,
.brand-copy h1,
.brand-text h1 {
  display: block;
  margin: 0;
  overflow: hidden;
  color: var(--workbench-ink);
  font-size: 15px;
  font-weight: 750;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-copy span,
.brand-sub {
  display: block;
  margin: 2px 0 0;
  overflow: hidden;
  color: var(--workbench-faint);
  font: 10px/1.3 var(--workbench-mono);
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-nav {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-self: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid var(--workbench-line);
  border-radius: 999px;
  background: var(--workbench-surface-strong);
}

.tool-link {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 0 16px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--workbench-muted);
  font-size: 12px;
  font-weight: 680;
  text-decoration: none;
  white-space: nowrap;
  transition: background 140ms ease, color 140ms ease, box-shadow 140ms ease;
}

.tool-link:hover {
  background: rgb(255 255 255 / 60%);
  color: var(--workbench-ink);
}

.tool-link[aria-current="page"] {
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-ink);
}

.tool-link svg,
.tool-link .lucide {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
  stroke-width: 1.8;
}

.tool-link[aria-current="page"] svg,
.tool-link[aria-current="page"] .lucide {
  color: var(--workbench-accent);
}

.header-side {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-self: end;
  gap: 12px;
  margin-left: 0;
}

.header-meta {
  color: var(--workbench-faint);
  font: 10px/1.3 var(--workbench-mono);
  letter-spacing: 0;
  white-space: nowrap;
}

/* 返回工程工具台入口 */
.home-link {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 6px;
  padding: 0 13px;
  border: 1px solid var(--workbench-line);
  border-radius: var(--workbench-radius-sm);
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-muted);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 140ms ease, color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.home-link:hover {
  border-color: var(--workbench-accent);
  color: var(--workbench-accent);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.14);
  transform: translateY(-1px);
}

.home-link svg,
.home-link .lucide {
  width: 15px;
  height: 15px;
  stroke-width: 1.8;
}

.connection,
.connection-indicator {
  display: flex;
  min-width: 0;
  min-height: 34px;
  align-items: center;
  gap: 8px;
  padding: 0 11px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--workbench-muted);
  font-size: 12px;
  white-space: nowrap;
}

.connection-dot {
  width: 9px;
  height: 9px;
  flex: 0 0 auto;
  border: 2px solid #ffffff;
  border-radius: 50%;
  background: #98a4af;
  box-shadow: 0 0 0 1px var(--workbench-line-strong);
}

.connection[data-state="connecting"],
.connection-indicator[data-state="connecting"] {
  border-color: transparent;
  background: transparent;
  color: var(--workbench-amber);
}

.connection[data-state="connecting"] .connection-dot,
.connection-indicator[data-state="connecting"] .connection-dot {
  animation: none;
  background: var(--workbench-amber);
  box-shadow: 0 0 0 1px var(--workbench-amber), 0 0 0 4px var(--workbench-amber-soft);
}

.connection[data-state="connected"],
.connection-indicator[data-state="connected"] {
  border-color: transparent;
  background: transparent;
  color: var(--workbench-green-strong);
}

.connection[data-state="connected"] .connection-dot,
.connection-indicator[data-state="connected"] .connection-dot {
  background: var(--workbench-green-bright);
  box-shadow: 0 0 0 1px var(--workbench-green-bright), 0 0 0 4px var(--workbench-green-soft);
}

.connection[data-state="error"],
.connection-indicator[data-state="error"] {
  border-color: transparent;
  background: transparent;
  color: var(--workbench-red);
}

.connection[data-state="error"] .connection-dot,
.connection-indicator[data-state="error"] .connection-dot {
  background: var(--workbench-red);
  box-shadow: 0 0 0 1px var(--workbench-red), 0 0 0 4px var(--workbench-red-soft);
}

.connection-text,
.connection-indicator span:last-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- 共享页面结构 ---------- */

.page {
  width: min(1680px, 100%);
  margin: 0 auto;
  padding: 18px 24px 28px;
}

.connection-band {
  display: grid;
  grid-template-columns: minmax(250px, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 16px 18px;
  border: 1px solid var(--workbench-line);
  border-radius: var(--workbench-radius);
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow);
}

.device-overview {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.device-visual {
  position: relative;
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  align-items: center;
  justify-items: stretch;
  padding: 7px 8px;
  border: 1px solid #303b47;
  border-radius: var(--workbench-radius-sm);
  background: #1b232d;
  box-shadow: none;
}

.device-visual::before,
.device-visual::after {
  position: static;
  grid-column: 1;
  width: 100%;
  height: 2px;
  border: 0;
  border-radius: 0;
  background: #36c690;
  content: "";
}

.device-visual::before {
  grid-row: 1;
}

.device-visual::after {
  grid-row: 3;
}

.device-led {
  position: absolute;
  top: 4px;
  right: 4px;
  width: 5px;
  height: 5px;
  border: 1px solid #1b232d;
  border-radius: 50%;
  background: #64717e;
}

.connection-band[data-device="open"] .device-led {
  background: #38d395;
  box-shadow: 0 0 8px #38d395;
}

.device-label {
  position: static;
  z-index: 1;
  grid-column: 1;
  grid-row: 2;
  color: #d9e2ea;
  font: 700 7px/1 var(--workbench-mono);
  text-align: center;
}

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

.device-copy h1 {
  margin: 0;
  overflow: hidden;
  color: var(--workbench-ink);
  font-size: 19px;
  font-weight: 760;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.device-meta {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: 5px 14px;
  margin-top: 5px;
  color: var(--workbench-muted);
  font-size: 12px;
}

.device-meta span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.device-meta code {
  color: var(--workbench-blue);
  font: 11px/1.4 var(--workbench-mono);
}

.connection-actions {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: 8px;
}

.connection-band .field {
  display: grid;
  min-width: 0;
  gap: 5px;
}

.connection-band .field label {
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--workbench-muted);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0;
}

.button {
  min-height: 38px;
  border-radius: var(--workbench-radius-sm);
}

.connection-actions .button {
  height: 38px;
}

.button-danger:hover:not(:disabled) {
  border-color: var(--workbench-red);
  background: var(--workbench-red);
  color: #ffffff;
}

.monitor-panel {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--workbench-line);
  border-radius: var(--workbench-radius);
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow);
}

.panel-toolbar {
  display: flex;
  min-width: 0;
  min-height: 48px;
  align-items: center;
  gap: 9px;
  padding: 7px 10px 7px 14px;
  border-bottom: 1px solid var(--workbench-line);
  background: var(--workbench-surface);
}

.panel-title {
  flex: 0 0 auto;
  margin: 0 auto 0 0;
  color: var(--workbench-ink);
  font-size: 13px;
  font-weight: 740;
  white-space: nowrap;
}

.capture-count {
  color: var(--workbench-faint);
  font: 10px/1.2 var(--workbench-mono);
  white-space: nowrap;
}

body[data-tool="serial"] .app {
  height: auto;
  min-height: 100vh;
}

body[data-tool="serial"] .workspace {
  display: grid;
  grid-template-rows: auto auto minmax(620px, auto);
  gap: 12px;
  align-content: start;
  width: min(1680px, 100%);
  min-height: 0;
  margin: 0 auto;
  padding: 18px 24px 28px;
}

.serial-connection-actions {
  align-items: center;
}

.connection-band .serial-baud-field {
  display: flex;
  align-items: center;
  gap: 10px;
}

.connection-band .serial-baud-field label {
  white-space: nowrap;
}

.serial-baud-field .baud-input {
  width: 150px;
  height: 38px;
}

body[data-tool="serial"] .monitor-shell.monitor-panel {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 0;
  min-height: 620px;
}

body[data-tool="serial"] .monitor-bar.panel-toolbar {
  flex: none;
}

body[data-tool="serial"] .monitor-shell > .parser-panel,
body[data-tool="serial"] .monitor-shell > .terminal-panel {
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body[data-tool="serial"] .parser-toolbar,
body[data-tool="serial"] .terminal-toolbar {
  min-height: 48px;
  background: var(--workbench-surface-soft);
}

body[data-tool="serial"] .parser-stats-strip {
  background: var(--workbench-surface-soft);
}

/* ---------- 与工程工具台一致的独立子页外壳 ---------- */

.communication-shell {
  position: relative;
  width: min(1400px, calc(100% - 24px));
  margin: 12px auto 40px;
}

.communication-shell .tblock {
  display: grid;
  grid-template-columns: minmax(0, 1fr) repeat(3, auto);
  overflow: hidden;
  border: 1px solid var(--workbench-line);
  border-radius: 999px;
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  font-family: var(--workbench-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.communication-shell .tblock > .cell {
  padding: 7px 14px;
  border-right: 1px solid var(--workbench-line);
  color: var(--workbench-muted);
  white-space: nowrap;
}

.communication-shell .tblock > .cell:last-child {
  border-right: 0;
}

.communication-shell .tblock .cell b {
  color: var(--workbench-ink);
  font-weight: 700;
}

.communication-shell .masthead {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 8px 16px;
}

.communication-shell .masthead > div:first-child {
  min-width: 0;
}

.communication-shell .kicker {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--workbench-accent);
  font: 700 11px/1.4 var(--workbench-mono);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.communication-shell .kicker::before {
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: linear-gradient(135deg, var(--workbench-accent), var(--workbench-blue));
  content: "";
}

.communication-shell .masthead h1 {
  margin: 6px 0 0;
  color: var(--workbench-ink);
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 0;
}

.communication-shell .masthead p {
  margin: 5px 0 0;
  color: var(--workbench-muted);
  font-size: 13px;
}

.communication-shell .usb-home {
  display: inline-flex;
  min-height: 34px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 6px 13px;
  border: 1px solid var(--workbench-line-strong);
  border-radius: var(--workbench-radius-sm);
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-ink);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.communication-shell .usb-home:hover {
  border-color: var(--workbench-accent);
  color: var(--workbench-accent);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.14);
  transform: translateY(-1px);
}

.communication-shell .workbench-status {
  display: inline-flex;
  min-height: 0;
  align-items: center;
  gap: 8px;
  margin-top: 6px;
  padding: 4px 10px;
  border: 1px solid var(--workbench-line);
  border-radius: 999px;
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-muted);
  font: 600 12px/1.4 var(--workbench-mono);
  white-space: nowrap;
}

.communication-shell .workbench-status[data-state="connecting"] {
  color: var(--workbench-amber);
}

.communication-shell .workbench-status[data-state="connected"] {
  color: var(--workbench-green-strong);
}

.communication-shell .workbench-status[data-state="error"] {
  color: var(--workbench-red);
}

.communication-shell > .page,
body[data-tool="serial"] .communication-shell > .workspace {
  width: 100%;
  margin: 0;
  padding: 0 8px 8px;
}

/* ---------- 通用串口页控件协调 ---------- */

.controls,
.parser-panel,
.terminal-panel {
  border-color: var(--workbench-line);
  border-radius: var(--workbench-radius);
  box-shadow: var(--workbench-shadow);
}

.controls,
.parser-panel,
.terminal-panel {
  background: var(--workbench-surface);
}

.button,
.parser-pause-button,
.parser-clear-button,
.clear-button,
.latest-frame-button {
  border-color: var(--workbench-line-strong);
  border-radius: var(--workbench-radius-sm);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-ink);
  transition: background 140ms ease, color 140ms ease, border-color 140ms ease, box-shadow 140ms ease, transform 140ms ease;
}

.button:hover:not(:disabled),
.parser-pause-button:hover:not(:disabled),
.parser-clear-button:hover:not(:disabled),
.clear-button:hover:not(:disabled),
.latest-frame-button:hover:not(:disabled) {
  border-color: var(--workbench-accent);
  color: var(--workbench-accent);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.14);
}

.button-primary,
.send-button {
  border-color: transparent;
  border-radius: var(--workbench-radius-sm);
  background: var(--workbench-accent-gradient);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.28);
  color: #ffffff;
}

.button-primary:hover:not(:disabled),
.send-button:hover:not(:disabled) {
  border-color: transparent;
  background: var(--workbench-accent-gradient-hover);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.34);
  color: #ffffff;
}

.button-primary:disabled,
.send-button:disabled {
  border-color: var(--workbench-line);
  background: var(--workbench-surface-strong);
  box-shadow: none;
  color: var(--workbench-muted);
  opacity: 1;
}

.button-secondary:hover:not(:disabled),
.clear-button:hover:not(:disabled) {
  border-color: var(--workbench-red);
  background: var(--workbench-red-soft);
  color: var(--workbench-red);
  box-shadow: 0 4px 14px rgba(220, 38, 64, 0.14);
}

.baud-input,
.parser-select,
.send-input {
  border-color: var(--workbench-line);
  border-radius: var(--workbench-radius-sm);
  background-color: var(--workbench-surface);
  box-shadow: none;
  color: var(--workbench-ink);
}

.baud-input:hover:not(:disabled),
.parser-select:hover:not(:disabled),
.send-input:hover:not(:disabled) {
  border-color: var(--workbench-line-strong);
}

.baud-input:focus,
.parser-select:focus,
.send-input:focus {
  border-color: var(--workbench-accent);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.14);
  outline: none;
}

.view-tabs,
.segmented {
  border: 1px solid var(--workbench-line);
  border-radius: 999px;
  background: var(--workbench-surface-strong);
}

.view-tab,
.segment-button {
  border-radius: 999px;
  color: var(--workbench-muted);
}

.view-tab[aria-selected="true"],
.segment-button[aria-selected="true"],
.segment-button[aria-pressed="true"] {
  background: var(--workbench-surface);
  box-shadow: var(--workbench-shadow-sm);
  color: var(--workbench-ink);
}

.notice {
  border-radius: var(--workbench-radius-sm);
}

.stat-card {
  border-color: var(--workbench-line);
  border-radius: var(--workbench-radius-sm);
  background: var(--workbench-surface);
}

.stat-card::before,
.stat-card::after {
  content: none;
}

.output {
  background: var(--workbench-terminal);
  color: var(--workbench-terminal-text);
}

.output:empty::before {
  color: var(--workbench-terminal-muted);
}

.output .tx-data {
  color: var(--workbench-blue);
}

.terminal-toolbar,
.terminal-footer {
  background: var(--workbench-surface-soft);
}

/* ---------- 响应式外壳 ---------- */

@media (max-width: 1100px) {
  .header-meta {
    display: none;
  }
}

@media (max-width: 980px) {
  .topbar,
  .app-header {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 12px;
  }

  .brand-copy span,
  .brand-sub {
    display: none;
  }
}

@media (max-width: 840px) {
  body[data-tool="serial"] .workspace {
    padding: 10px 10px 18px;
  }

  body[data-tool="serial"] .communication-shell > .workspace {
    padding: 0 8px 8px;
  }

  body[data-tool="serial"] .connection-band {
    grid-template-columns: minmax(0, 1fr);
    padding: 13px;
  }

  body[data-tool="serial"] .connection-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  body[data-tool="serial"] .serial-connection-actions {
    display: grid;
    grid-template-columns: minmax(90px, 1fr) auto auto;
    align-items: center;
  }

  body[data-tool="serial"] .serial-connection-actions .button {
    flex: none;
    padding: 0 10px;
  }

  body[data-tool="serial"] .serial-baud-field {
    flex: none;
    display: grid;
    gap: 5px;
  }

  body[data-tool="serial"] .connection-band .serial-baud-field label {
    display: none;
  }

  body[data-tool="serial"] .serial-baud-field .baud-input {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .topbar,
  .app-header {
    position: static;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    min-height: 0;
    padding: 8px 12px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
  }

  .tool-nav {
    grid-column: 1 / -1;
    grid-row: 2;
    justify-self: stretch;
    width: 100%;
  }

  .tool-link {
    flex: 1 1 50%;
    min-width: 0;
    padding: 0 8px;
  }

  .header-side {
    gap: 8px;
  }

  .home-link span {
    display: none;
  }

  .home-link {
    padding: 0 9px;
  }

  .connection,
  .connection-indicator {
    min-height: 32px;
    padding: 0 9px;
  }

  .page,
  body[data-tool="serial"] .workspace {
    padding: 10px 10px 18px;
  }

  .connection-band {
    grid-template-columns: minmax(0, 1fr);
    padding: 13px;
  }

  .connection-actions {
    width: 100%;
    flex-wrap: wrap;
  }

  .connection-actions .button {
    flex: 1 1 130px;
  }

  .serial-connection-actions {
    display: grid;
    grid-template-columns: minmax(90px, 1fr) auto auto;
    align-items: center;
  }

  .serial-connection-actions .button {
    flex: none;
    padding: 0 10px;
  }

  .serial-baud-field {
    flex: none;
    display: grid;
    gap: 5px;
  }

  .connection-band .serial-baud-field label {
    display: none;
  }

  .serial-baud-field .baud-input {
    width: 100%;
  }

  body[data-tool="serial"] .monitor-shell.monitor-panel {
    min-height: 560px;
  }
}

@media (max-width: 520px) {
  .brand-copy strong,
  .brand-copy h1,
  .brand-text h1 {
    font-size: 13px;
  }

  .connection-text,
  .connection-indicator span:last-child {
    display: none;
  }

  .device-visual {
    display: none;
  }

  .device-copy h1 {
    white-space: normal;
  }
}

@media (max-width: 760px) {
  .communication-shell {
    width: calc(100% - 12px);
    margin: 6px auto 30px;
  }

  .communication-shell .tblock {
    grid-template-columns: minmax(0, 1fr);
    border-radius: var(--workbench-radius);
  }

  .communication-shell .tblock .cell:not(:first-child) {
    display: none;
  }

  .communication-shell .tblock .cell {
    min-width: 0;
    overflow: hidden;
    letter-spacing: 0.04em;
    text-overflow: ellipsis;
  }

  .communication-shell .masthead {
    align-items: flex-start;
    padding: 16px 4px 12px;
  }

  .communication-shell .masthead h1 {
    overflow-wrap: anywhere;
    font-size: 26px;
  }

  .communication-shell > .page,
  body[data-tool="serial"] .communication-shell > .workspace {
    padding: 0 4px 4px;
  }

  .communication-shell .workbench-status span:last-child,
  .communication-shell .workbench-status .connection-text {
    display: inline;
  }
}