.stm32-wrap {
  width: 100%;
  max-width: none;
  height: 100vh;
  margin: 0;
  padding: max(6px, env(safe-area-inset-top)) max(6px, env(safe-area-inset-right))
    max(6px, env(safe-area-inset-bottom)) max(6px, env(safe-area-inset-left));
}

.notice {
  margin-bottom: 8px;
  padding: 10px 12px;
  border: 1px solid #613031;
  border-radius: var(--radius);
  background: #211313;
  color: #ffd2d2;
  line-height: 1.45;
}

.stm32-shell {
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto auto;
  gap: 6px;
  height: 100%;
  min-height: 0;
}

/* Keep the workspace in the flexible row even when the optional
   BOOT0/NRST panel is hidden. Without explicit placement, CSS Grid
   moves the action strip into the flexible row and it fills the screen. */
.stm32-shell > .toolbar {
  grid-row: 1;
}

.stm32-shell > .mode-tabs {
  grid-row: 2;
}

.stm32-shell > .boot-control-panel {
  grid-row: 3;
}

.stm32-shell > .workspace {
  grid-row: 4;
}

.stm32-shell > .action-strip {
  grid-row: 5;
}

.stm32-shell > .log-card {
  grid-row: 6;
}

.toolbar,
.toolbar-brand,
.toolbar-actions,
.mode-tabs,
.panel-header,
.preset-row,
.primary-area,
.log-header {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.toolbar {
  justify-content: space-between;
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #101412;
}

.toolbar-brand .brand-mark {
  flex: 0 0 32px;
  margin-bottom: 0;
  text-decoration: none;
}

.toolbar-brand h1 {
  margin: 0;
  color: var(--text);
  font-size: 1rem;
  line-height: 1.2;
}

.toolbar-subtitle {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.status-pill {
  min-height: 34px;
  padding: 7px 10px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0d0d0d;
  color: var(--cyan);
  white-space: nowrap;
}

.mode-tabs {
  padding: 6px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #101412;
}

.mode-tab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 92px;
  min-height: 36px;
  padding: 8px 12px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0b0d0c;
  color: #d8ddd8;
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
}

.tab-icon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
}

.tab-icon path,
.tab-icon rect,
.tab-icon circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mode-tab.is-active {
  border-color: #00ffcc88;
  background: linear-gradient(135deg, #17252b, #101517);
  color: var(--cyan);
}

.mode-tab.danger-tab.is-active {
  border-color: #854040;
  background: linear-gradient(135deg, #321717, #130d0d);
  color: #ffd1d1;
}

.boot-mode-select {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.boot-control-panel {
  margin: 0;
  padding: 8px 10px;
  border-color: #5d4624;
  background: #17130c;
}

.boot-control-panel summary {
  cursor: pointer;
  color: #ffd27d;
  font-size: 0.82rem;
  font-weight: 700;
}

.boot-control-panel p {
  margin-top: 8px;
  color: #d8c59e;
  font-size: 0.76rem;
}

.boot-control-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 8px;
  align-items: center;
}

.boot-control-grid label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.boot-control-grid .check-label {
  display: flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  color: #d8ddd8;
  text-transform: none;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.38fr);
  gap: 6px;
  min-height: 0;
}

.work-panel,
.side-panel {
  min-height: 0;
}

.work-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--panel-bg), var(--panel-bg-deep));
  box-shadow: inset 0 0 5px #000;
  overflow: hidden;
}

.boot-help {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 10px 10px 0;
  padding: 10px;
  border: 1px solid #775323;
  border-radius: var(--radius);
  background: #19150d;
  color: #ffe4a8;
}

.boot-help div {
  display: grid;
  gap: 3px;
}

.boot-help strong {
  color: #ffd27d;
  font-size: 0.86rem;
}

.boot-help span {
  color: #f3dcb3;
  font-size: 0.78rem;
  line-height: 1.35;
}

.serial-format {
  display: grid;
  min-width: 48px;
  min-height: 32px;
  place-items: center;
  border: 1px solid #8b6330;
  border-radius: var(--radius);
  color: #ffd27d !important;
  font-weight: 900;
}

.side-panel {
  display: grid;
  grid-template-rows: auto minmax(180px, 1fr);
  gap: 6px;
}

.mode-panel {
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr);
  gap: 10px;
  height: 100%;
  min-height: 0;
  padding: 10px;
  overflow: auto;
}

/* Visible connection help is accounted for by the :has() rule below. */

.panel-header {
  justify-content: space-between;
}

.panel-header.panel-actions {
  justify-content: flex-end;
}

.panel-header h2,
.panel-header .eyebrow,
.tight .eyebrow {
  margin: 0;
}

.panel-header.tight {
  margin-bottom: 8px;
}

.action-button {
  min-width: 112px;
  margin-top: 0;
  cursor: pointer;
  font-family: var(--font-mono);
}

.action-button.primary {
  color: #b8ffb8;
  border-color: #2b2b2b;
  background: linear-gradient(135deg, #26332a, #151a17);
}

.action-button.danger,
.primary.danger {
  color: #ffd1d1;
  border-color: #6f3838;
  background: linear-gradient(135deg, #3a1919, #170f0f);
}

.action-button.subtle {
  min-width: 78px;
  min-height: 34px;
  padding: 6px 10px;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.inline-select,
.form-grid input,
.form-grid select {
  min-height: 36px;
  padding: 7px 10px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0b0d0c;
  color: var(--text);
  font: inherit;
}

.inline-select {
  width: min(100%, 180px);
}

.compact-select {
  width: auto;
  min-width: 110px;
}

.wide-select {
  width: min(100%, 360px);
}

.drop-zone {
  display: grid;
  gap: 3px;
  min-height: 74px;
  place-items: center;
  border: 1px dashed #3a4a42;
  border-radius: var(--radius);
  background: #0b0d0c;
  color: #d8ddd8;
  text-align: center;
  cursor: pointer;
}

.drop-zone.firmware-picker {
  min-height: 112px;
  padding: 18px;
  box-sizing: border-box;
}

.drop-zone.firmware-picker:hover,
.drop-zone.firmware-picker:focus-visible {
  border-color: var(--green);
  background: #0d1511;
  outline: none;
}

.drop-zone strong {
  color: var(--green);
  font-size: 0.9rem;
}

.drop-zone span {
  color: var(--muted);
  font-size: 0.78rem;
}

.drop-zone.is-dragging {
  border-color: var(--cyan);
  background: #0d1817;
}

.firmware-card {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(100px, 0.5fr) minmax(100px, 0.5fr) auto;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
}

.firmware-card.empty {
  opacity: 0.72;
}

.firmware-card div {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.firmware-card span,
.field-title {
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
}

.firmware-card strong {
  overflow: hidden;
  color: #d8fff2;
  font-size: 0.84rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-button {
  width: 30px;
  height: 30px;
  border: 1px solid #3b3333;
  border-radius: var(--radius);
  background: #140f0f;
  color: #ffd1d1;
  cursor: pointer;
  font: inherit;
}

.form-grid {
  display: grid;
  grid-template-columns: 170px minmax(180px, 360px);
  gap: 10px;
  align-content: start;
  align-items: center;
}

.form-grid label {
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 700;
  text-transform: uppercase;
}

.options-grid,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  align-items: center;
}

.options-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  color: #d8ddd8;
  font-size: 0.82rem;
}

.segment-list {
  min-height: 48px;
  overflow: auto;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
  color: var(--muted);
  font-size: 0.78rem;
}

.segment-list.empty {
  padding: 10px;
  box-sizing: border-box;
}

.segment-list > div {
  display: grid;
  grid-template-columns: 110px minmax(0, 1fr) 100px;
  gap: 10px;
  align-items: center;
  padding: 8px 10px;
  border-bottom: 1px solid #202523;
}

.segment-list > div:last-child {
  border-bottom: 0;
}

.segment-list strong {
  color: #d8fff2;
}

.segment-list em {
  color: var(--cyan);
  font-style: normal;
  text-align: right;
}

.metric-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: auto;
}

.metric-grid div {
  display: grid;
  gap: 4px;
  padding: 10px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0b0d0c;
}

.metric-grid span {
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.metric-grid strong {
  color: var(--cyan);
  font-size: 0.92rem;
}

.erase-choice-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.choice-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 5px 8px;
  padding: 12px;
  border: 1px solid #413030;
  border-radius: var(--radius);
  background: #120d0d;
  cursor: pointer;
}

.choice-card input {
  grid-row: 1 / span 2;
  align-self: start;
  margin-top: 3px;
}

.choice-card strong {
  color: #ffd1d1;
  font-size: 0.88rem;
}

.choice-card span {
  color: #c7aaaa;
  font-size: 0.76rem;
  line-height: 1.4;
}

.danger-confirm {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border: 1px solid #6f3838;
  border-radius: var(--radius);
  background: #180f0f;
  color: #ffd1d1;
  font-size: 0.82rem;
}

.danger-text {
  color: #ff9d9d;
}

.info-panel {
  grid-template-rows: auto auto auto minmax(0, 1fr);
}

.info-dashboard {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.info-dashboard article {
  display: grid;
  gap: 5px;
  padding: 11px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0b0d0c;
}

.info-dashboard span {
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
}

.info-dashboard strong {
  color: #d8fff2;
  font-size: 0.86rem;
}

.command-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 7px;
}

.command-chips span {
  padding: 6px 8px;
  border: 1px solid #2b403a;
  border-radius: 999px;
  background: #0d1816;
  color: #b8ffdd;
  font-size: 0.7rem;
}

.advanced-memory-settings {
  align-self: start;
  padding: 9px;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #0b0d0c;
}

.advanced-memory-settings summary {
  cursor: pointer;
  color: var(--green);
  font-size: 0.8rem;
  font-weight: 700;
}

.advanced-memory-settings .form-grid {
  margin: 10px 0;
}

.console-panel {
  grid-template-rows: auto auto minmax(0, 1fr);
  overflow: hidden;
}

.console-note {
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.4;
}

.terminal-host {
  min-height: 240px;
  overflow: hidden;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
  padding: 6px;
}

.terminal-host .xterm,
.terminal-host .xterm-viewport {
  height: 100%;
}

.compact-card {
  display: grid;
  min-height: 0;
  padding: 10px;
}

.device-card {
  align-content: start;
}

.memory-card {
  grid-template-rows: auto minmax(0, 1fr) auto;
}

.info-list {
  display: grid;
  gap: 8px;
}

.info-list div {
  display: grid;
  grid-template-columns: minmax(110px, 0.62fr) minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.info-list dt {
  color: var(--muted);
  font-size: 0.74rem;
  text-transform: uppercase;
}

.info-list dd {
  min-width: 0;
  overflow-wrap: anywhere;
  color: #f2fff2;
  font-size: 0.86rem;
}

.memory-map {
  position: relative;
  min-height: 0;
  overflow: hidden;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
}

.memory-addresses {
  display: flex;
  justify-content: space-between;
  padding: 8px 9px 5px;
  color: var(--muted);
  font-size: 0.66rem;
}

.memory-track {
  position: absolute;
  inset: 34px 10px 12px;
  overflow: hidden;
  border: 1px solid #2b2b2b;
  border-radius: 5px;
  background:
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px) 0 0 / 12.5% 100%,
    #0b0d0c;
}

.memory-boundary {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: rgba(255,255,255,0.08);
}

.memory-segment {
  position: absolute;
  top: 20%;
  bottom: 20%;
  min-width: 7px;
  border: 1px solid #00ffcc88;
  border-radius: 4px;
  background: linear-gradient(180deg, #163333, #10201d);
}

.validation-list {
  min-height: 40px;
  margin-top: 8px;
  overflow: auto;
  color: #d8ddd8;
  font-size: 0.76rem;
  line-height: 1.45;
}

.validation-list.error {
  color: #ffd1d1;
}

.validation-list.warning {
  color: #ffe0a6;
}

.validation-list.success {
  color: #b8ffb8;
}

.action-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  min-height: 58px;
  margin: 0;
  padding: 8px 10px;
}

.primary-area {
  flex-wrap: wrap;
}

.primary-area #operationStatus {
  color: var(--muted);
  font-size: 0.82rem;
}

.action-hint {
  max-width: 680px;
  color: #d8ddd8;
  font-size: 0.76rem;
  line-height: 1.35;
}

.progress-stack {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.progress-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 48px;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 0.82rem;
}

.progress-row progress {
  width: 100%;
  height: 14px;
  overflow: hidden;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
}

.progress-row progress::-webkit-progress-bar {
  background: #080a09;
}

.progress-row progress::-webkit-progress-value {
  background: linear-gradient(90deg, var(--green-dim), var(--cyan));
}

.progress-row progress::-moz-progress-bar {
  background: linear-gradient(90deg, var(--green-dim), var(--cyan));
}

.log-card {
  position: relative;
  margin: 0;
  padding: 8px 10px;
}

.log-card summary {
  min-height: 34px;
  padding-right: 170px;
  cursor: pointer;
  color: var(--green);
  font-size: 0.82rem;
  font-weight: 700;
  line-height: 34px;
}

.log-header {
  position: absolute;
  top: 8px;
  right: 10px;
  justify-content: flex-end;
}

.log-card:not([open]) .log-header {
  display: none;
}

.log-output {
  width: 100%;
  max-height: 180px;
  min-height: 120px;
  margin-top: 8px;
  overflow: auto;
  border: 1px solid #2b2b2b;
  border-radius: var(--radius);
  background: #080a09;
  color: #c7d4cf;
  font-size: 0.78rem;
  line-height: 1.45;
  padding: 10px;
  white-space: pre-wrap;
}

@media (max-width: 1080px) {
  .boot-control-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mode-tab {
    min-width: 82px;
  }
}

@media (max-width: 920px) {
  .stm32-wrap {
    height: auto;
    min-height: 100vh;
  }

  .stm32-shell,
  .workspace,
  .side-panel,
  .mode-panel,
  .action-strip {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: none;
    height: auto;
  }

  .toolbar,
  .mode-tabs,
  .panel-header,
  .toolbar-actions,
  .boot-mode-select {
    align-items: stretch;
    flex-wrap: wrap;
    justify-content: stretch;
  }

  .toolbar-brand,
  .toolbar-actions,
  .mode-tab,
  .action-button,
  .inline-select,
  .boot-mode-select {
    width: 100%;
  }

  .boot-mode-select {
    margin-left: 0;
  }

  .boot-help {
    align-items: stretch;
    flex-direction: column;
  }

  .boot-control-grid,
  .options-grid,
  .metric-grid,
  .form-grid,
  .erase-choice-grid,
  .info-dashboard,
  .progress-row,
  .firmware-card {
    grid-template-columns: 1fr;
  }

  .segment-list > div {
    grid-template-columns: 1fr;
  }

  .segment-list em {
    text-align: left;
  }

  .memory-map {
    min-height: 180px;
  }

  .terminal-host {
    min-height: 360px;
  }
}

@media (max-width: 920px) {
  .log-card summary {
    min-height: 0;
    padding-right: 0;
    line-height: normal;
  }

  .log-header {
    position: static;
    margin-top: 8px;
  }

  .log-header .action-button {
    width: auto;
  }
}

/* UART / ST-Link transport controls */
.toolbar-field {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
}

.transport-select {
  min-width: 170px;
}

[hidden] {
  display: none !important;
}

.work-panel:has(> .boot-help:not([hidden])) > .mode-panel {
  height: calc(100% - 76px);
}

@media (max-width: 920px) {
  .toolbar-field,
  .transport-select {
    width: 100%;
  }

  .toolbar-field {
    align-items: stretch;
    flex-direction: column;
  }
}

/* Keep the Read operation metrics anchored to the bottom of the work panel. */
.mode-panel[data-mode-panel="read"] {
  grid-template-rows: auto auto minmax(0, 1fr) auto;
}

.mode-panel[data-mode-panel="read"] .metric-grid {
  grid-row: 4;
  margin-top: 0;
}
/* Keep Flash memory ranges flexible and its write options anchored underneath. */
.mode-panel[data-mode-panel="flash"] {
  grid-template-rows: auto auto auto minmax(48px, 1fr) auto;
}

.mode-panel[data-mode-panel="flash"] .segment-list {
  grid-row: 4;
}

.mode-panel[data-mode-panel="flash"] .options-grid {
  grid-row: 5;
  margin-top: 0;
  padding-inline: 10px;
  box-sizing: border-box;
}


/* Small-screen layout: keep the complete tool in the document scroll flow. */
@media (max-width: 760px) {
  html,
  body {
    height: auto;
    min-height: 100%;
  }

  body {
    overflow-y: auto;
  }

  .stm32-wrap {
    min-height: 100dvh;
    height: auto;
    overflow: visible;
  }

  .stm32-shell,
  .workspace,
  .work-panel,
  .side-panel,
  .mode-panel,
  .action-strip,
  .work-panel:has(> .boot-help:not([hidden])) > .mode-panel {
    height: auto;
    min-height: 0;
    overflow: visible;
  }

  .mode-panel,
  .mode-panel[data-mode-panel="read"],
  .mode-panel[data-mode-panel="flash"],
  .memory-card {
    grid-template-rows: auto;
  }

  .mode-panel[data-mode-panel="read"] .metric-grid,
  .mode-panel[data-mode-panel="flash"] .segment-list,
  .mode-panel[data-mode-panel="flash"] .options-grid {
    grid-row: auto;
  }

  .console-panel {
    overflow: visible;
  }

  .toolbar {
    position: relative;
  }

  .toolbar-brand {
    min-height: 32px;
    padding-right: 40px;
  }

  .toolbar > .toolbar-actions > .help-icon-button {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 2;
    width: 30px;
    height: 30px;
    margin: 0;
  }
}