:root {
  color-scheme: light;
  --bg: #eef2f6;
  --panel: #ffffff;
  --ink: #18202a;
  --muted: #667085;
  --soft: #f7f9fb;
  --line: #d7dee8;
  --accent: #0f766e;
  --accent-strong: #0b5f59;
  --accent-soft: #e7f4f2;
  --blue: #2f5f98;
  --danger: #b42318;
  --warn: #b54708;
  --ok: #087443;
  --shadow: 0 18px 50px rgba(24, 32, 42, 0.12);
  --timecode-input-width: 188px;
  --timecode-control-width: calc(var(--timecode-input-width) + 30px);
  --offset-timecode-control-width: calc(var(--timecode-input-width) + 82px);
  --calc-b-width: var(--timecode-control-width);
  --calc-label-height: 24px;
  --calc-control-height: 46px;
  --page-x: 28px;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background:
    linear-gradient(180deg, #f7f9fc 0, var(--bg) 260px);
  color: var(--ink);
  min-height: 100vh;
}

button, input, select {
  font: inherit;
}

button {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  height: 40px;
  padding: 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  white-space: nowrap;
  font-weight: 700;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease, box-shadow 140ms ease;
}

button:hover { border-color: #aab4c3; transform: translateY(-1px); }
button:disabled { opacity: 0.48; cursor: not-allowed; }
button:disabled:hover { transform: none; }

.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(15, 118, 110, 0.18);
}

.primary:hover { border-color: var(--accent-strong); background: var(--accent-strong); }

.danger {
  border-color: #f4c7c3;
  color: var(--danger);
  background: #fffafa;
}

.app {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto auto minmax(0, 1fr) auto;
}

header {
  background: #202a36;
  color: #fff;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

h1 {
  font-size: 20px;
  line-height: 1.2;
  margin: 0;
  font-weight: 700;
  letter-spacing: 0;
}

.app-title {
  display: inline-flex;
  align-items: flex-end;
  gap: 6px;
  flex-wrap: wrap;
}

.app-version {
  color: #9fb0c3;
  font-size: 11px;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0;
  transform: translateY(-1px);
}

.title-block {
  display: grid;
  gap: 4px;
}

.subtitle {
  color: #c8d2df;
  font-size: 13px;
  line-height: 1.35;
}

.header-meta {
  color: #d7dee8;
  font-size: 13px;
  display: flex;
  gap: 14px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.badge {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.install-btn {
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 13px;
  box-shadow: none;
}

.install-btn[hidden] {
  display: none;
}

.install-btn:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.18);
}

.toolbar {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  margin: 0 var(--page-x);
  padding: 14px;
  display: grid;
  grid-template-columns: max-content max-content minmax(0, 1fr) max-content;
  gap: 12px 14px;
  align-items: end;
  justify-content: start;
  box-shadow: var(--shadow);
  min-width: 0;
}

.toolbar-head {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  min-height: 24px;
  border-bottom: 1px solid #edf1f5;
  padding-bottom: 8px;
  margin-bottom: 2px;
}

.toolbar-title {
  margin: 0;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: 0;
}

.toolbar > label {
  min-width: 0;
}

.toolbar > button {
  height: 46px;
  min-width: 72px;
  justify-content: center;
}

.toolbar-actions {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
  justify-content: flex-start;
}

.toolbar-actions button {
  height: 46px;
  justify-content: center;
}

#previewBtn,
#applyBtn,
#undoBtn {
  min-width: 72px;
}

#exportMetadataBtn {
  min-width: 132px;
}

#combinePolyBtn {
  min-width: 106px;
}

.ltc-tools {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
  padding: 10px;
  display: grid;
  gap: 9px;
  align-self: end;
  justify-self: end;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.72);
}

.ltc-tools-title {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  line-height: 1;
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.ltc-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.ltc-actions button {
  height: 38px;
  min-width: 0;
  justify-content: center;
  padding: 0 10px;
}

.ltc-mute-option {
  min-height: 18px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  user-select: none;
}

.display-option {
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
  padding: 0 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text);
  font-size: 13px;
  line-height: 1.2;
  user-select: none;
}

.display-option input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
}

label {
  display: grid;
  gap: 5px;
  font-size: 12px;
  color: var(--muted);
  font-weight: 650;
}

input, select {
  height: 40px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  padding: 0 11px;
  min-width: 0;
  font-weight: 650;
}

input:focus, select:focus, button:focus {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  outline-offset: 1px;
}

.select-field {
  position: relative;
  min-width: 0;
}

.select-field select {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  pointer-events: none;
}

.select-button {
  width: 100%;
  height: 46px;
  justify-content: space-between;
  border-color: var(--line);
  background: #fff;
  color: var(--ink);
  box-shadow: none;
  padding: 0 10px 0 11px;
  font-weight: 650;
}

.select-button:hover {
  transform: none;
  border-color: #aab4c3;
  background: #fdfefe;
}

.select-button::after {
  content: "";
  width: 8px;
  height: 8px;
  border-right: 2px solid #667085;
  border-bottom: 2px solid #667085;
  transform: rotate(45deg) translateY(-2px);
  transition: transform 140ms ease;
}

.select-field.open .select-button {
  border-color: #a7c9c5;
  outline: 3px solid rgba(15, 118, 110, 0.18);
  outline-offset: 1px;
}

.select-field.open .select-button::after {
  transform: rotate(225deg) translate(-1px, -1px);
}

.select-menu {
  position: absolute;
  z-index: 20;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: min(420px, calc(100vh - 190px));
  overflow: auto;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.select-menu[hidden] {
  display: none;
}

.select-option {
  width: 100%;
  height: 34px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--ink);
  justify-content: flex-start;
  padding: 0 10px;
  box-shadow: none;
  font-weight: 650;
}

.select-option:hover,
.select-option.active {
  transform: none;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

.select-option[aria-selected="true"] {
  background: #edf3f7;
  color: var(--ink);
}

.timecode-control {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr) 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  height: 40px;
  width: var(--timecode-control-width);
}

.timecode-control:focus-within {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  outline-offset: 1px;
  border-color: #a7c9c5;
}

.timecode-control input {
  border: 0;
  border-radius: 0;
  height: 40px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0;
  text-align: center;
}

.timecode-control input:focus {
  outline: none;
}

.toolbar .timecode-control {
  grid-template-columns: 52px minmax(0, 1fr) 30px;
  height: 46px;
  width: var(--offset-timecode-control-width);
}

.toolbar .timecode-control input {
  height: 46px;
  background: transparent;
  padding: 0 14px;
  font-size: 21px;
  font-weight: 750;
}

.calc-expression .timecode-control {
  grid-template-columns: minmax(0, 1fr) 30px;
  height: var(--calc-control-height);
  width: var(--timecode-control-width);
}

.calc-b-field {
  width: var(--calc-b-width);
}

.calc-b-field .timecode-control,
.calc-b-field .calc-frame-control {
  width: 100%;
}

.calc-frame-control {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 54px;
  height: var(--calc-control-height);
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
}

.calc-frame-control input {
  width: 100%;
  height: var(--calc-control-height);
  border: 0;
  border-radius: 0;
  background: transparent;
  text-align: center;
  font-size: 21px;
  font-weight: 750;
}

.calc-frame-unit {
  height: var(--calc-control-height);
  border-left: 1px solid var(--line);
  background: var(--soft);
  color: var(--warn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 16px;
  font-weight: 850;
  letter-spacing: 0;
}

.calc-frame-control:focus-within {
  outline: 3px solid rgba(15, 118, 110, 0.18);
  outline-offset: 1px;
  border-color: #a7c9c5;
}

[hidden] {
  display: none !important;
}

.calculator .timecode-control input {
  border: 0;
  border-radius: 0;
  height: var(--calc-control-height);
  background: transparent;
}

.app.drag-over::after {
  content: "";
  position: fixed;
  inset: 0;
  border: 4px dashed var(--accent);
  background: rgba(15, 118, 110, 0.04);
  pointer-events: none;
  z-index: 999;
}

.sign-toggle {
  width: 52px;
  height: 46px;
  padding: 0 0 3px;
  border: 0;
  border-right: 1px solid var(--line);
  border-radius: 0;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 24px;
  line-height: 1;
  font-weight: 850;
  box-shadow: none;
  min-width: 0;
}

.sign-toggle[data-sign="-1"] {
  background: #fff3e5;
  color: var(--warn);
}

.sign-toggle:hover {
  transform: none;
  background: #dff0ed;
}

.sign-toggle[data-sign="-1"]:hover {
  background: #ffe7c7;
}

.tc-steppers {
  display: grid;
  grid-template-rows: 1fr 1fr;
  border-left: 1px solid var(--line);
  background: #f8fafc;
  min-height: 0;
}

.tc-step {
  height: 20px;
  width: 30px;
  min-width: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  justify-content: center;
  font-size: 10px;
  line-height: 1;
  color: #475467;
  background: transparent;
  box-shadow: none;
}

.tc-step + .tc-step {
  border-top: 1px solid var(--line);
}

.tc-step:hover {
  transform: none;
  background: #edf3f7;
}

main {
  padding: 20px var(--page-x) 18px;
  display: grid;
  gap: 16px;
  grid-template-rows: auto auto 1fr;
  min-height: 0;
}

.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(140px, 1fr));
  gap: 12px;
}

.stat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  min-height: 72px;
  box-shadow: 0 8px 24px rgba(24, 32, 42, 0.05);
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  margin-bottom: 6px;
}

.stat strong {
  display: block;
  font-size: 18px;
  line-height: 1.25;
  overflow-wrap: anywhere;
  letter-spacing: 0;
}

.calculator {
  background: var(--panel);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin: 40px var(--page-x) 14px;
  display: grid;
  gap: 14px;
  box-shadow: var(--shadow);
}

.calc-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  border-bottom: 1px solid #edf1f5;
  padding-bottom: 8px;
  margin-bottom: 2px;
}

.calc-title {
  font-size: 15px;
  line-height: 1.2;
  margin: 0;
  font-weight: 800;
  letter-spacing: 0;
}

.calc-expression {
  display: grid;
  grid-template-columns: 122px var(--timecode-control-width) 52px var(--calc-b-width) 20px var(--timecode-control-width) max-content minmax(260px, 1fr);
  grid-template-areas: "fps a op b eq result actions notes";
  gap: 12px;
  align-items: start;
  justify-content: start;
  min-width: 0;
}

.calculator label {
  color: var(--muted);
}

.calc-expression > label {
  display: grid;
  grid-template-rows: var(--calc-label-height) var(--calc-control-height);
  align-self: start;
  min-width: 0;
  gap: 5px;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.2;
}

.calc-fps-field { grid-area: fps; }
.calc-a-field { grid-area: a; }
.calc-op-stack { grid-area: op; }
.calc-b-field { grid-area: b; }
.calc-equals { grid-area: eq; }
.calc-result-field { grid-area: result; }
.calc-actions { grid-area: actions; }
.calc-notes {
  grid-area: notes;
  align-self: start;
  justify-self: end;
  max-width: 520px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
  font-weight: 650;
  text-align: left;
  opacity: 0.82;
}

.calc-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  height: var(--calc-label-height);
  min-width: 0;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.2;
}

.calc-b-field,
.calc-result-field {
  position: relative;
}

.calc-mode-toggle {
  display: inline-grid;
  grid-template-columns: repeat(2, 1fr);
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  background: var(--soft);
  height: var(--calc-label-height);
  flex: 0 0 auto;
}

.calculator .calc-mode-btn {
  height: 22px;
  min-width: 34px;
  border: 0;
  border-radius: 0;
  padding: 0 6px;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  box-shadow: none;
  justify-content: center;
}

.calculator .calc-mode-btn + .calc-mode-btn {
  border-left: 1px solid var(--line);
}

.calculator .calc-mode-btn.active {
  background: var(--accent);
  color: #fff;
}

.calculator .calc-swap-btn {
  width: 38px;
  height: var(--calc-label-height);
  min-width: 0;
  padding: 0;
  justify-content: center;
  border-radius: 7px;
  color: var(--muted);
  background: var(--soft);
  box-shadow: none;
}

.swap-arrows {
  width: 18px;
  height: 13px;
  display: grid;
  gap: 5px;
  align-content: center;
}

.swap-arrows span {
  position: relative;
  display: block;
  width: 15px;
  height: 1.5px;
  background: currentColor;
  border-radius: 999px;
}

.swap-arrows span:first-child {
  justify-self: start;
  border-radius: 999px 0 0 999px;
}

.swap-arrows span:first-child::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 6px;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transform: rotate(42deg);
  transform-origin: right center;
}

.swap-arrows span:last-child {
  justify-self: end;
  border-radius: 0 999px 999px 0;
}

.swap-arrows span:last-child::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 6px;
  height: 1.5px;
  border-radius: 999px;
  background: currentColor;
  transform: rotate(42deg);
  transform-origin: left center;
}

.calculator input,
.calc-result {
  height: var(--calc-control-height);
  border: 1px solid var(--line);
  background: var(--soft);
  color: var(--ink);
  border-radius: 6px;
  padding: 0 14px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 21px;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
}

.calculator input:focus {
  outline-color: rgba(15, 118, 110, 0.24);
  border-color: var(--accent);
}

.calc-op-stack {
  display: grid;
  grid-template-rows: var(--calc-label-height) var(--calc-control-height);
  gap: 5px;
  justify-items: center;
  align-self: start;
}

.calc-op-stack .calc-swap-btn {
  position: static;
}

.calc-operator {
  width: 52px;
  height: var(--calc-control-height);
  padding: 0 0 3px;
  align-items: center;
  justify-content: center;
  border-color: var(--line);
  background: var(--accent-soft);
  color: var(--accent-strong);
  border-radius: 6px;
  font-size: 24px;
  line-height: 1;
  font-weight: 850;
  box-shadow: none;
}

.calc-operator[data-op="-"] {
  background: #fff3e5;
  color: var(--warn);
}

.calc-operator:hover {
  transform: none;
  border-color: var(--accent);
  background: #dff0ed;
}

.calc-operator[data-op="-"]:hover {
  background: #ffe7c7;
}

.calc-equals {
  color: var(--muted);
  font-size: 22px;
  line-height: var(--calc-control-height);
  font-weight: 800;
  text-align: center;
  align-self: end;
}

.calc-result {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--accent-strong);
  font-weight: 750;
  width: var(--timecode-control-width);
}

.calc-meta {
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
  line-height: 1.2;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.calc-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: end;
  align-self: end;
}

.calculator .primary {
  height: var(--calc-control-height);
}

.calculator button {
  height: var(--calc-control-height);
}

.calculator .tc-step {
  width: 30px;
  height: 23px;
  min-height: 0;
  padding: 0;
  font-size: 10px;
}

.toolbar .tc-step {
  height: 23px;
}

.workspace {
  min-height: 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
}

.table-head {
  padding: 14px 16px;
  display: grid;
  grid-template-columns: auto auto minmax(0, 1fr);
  gap: 12px;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.table-title {
  font-size: 15px;
  font-weight: 750;
  display: flex;
  align-items: center;
  gap: 10px;
}

.phase {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  color: var(--accent);
  background: var(--accent-soft);
  font-size: 12px;
  font-weight: 750;
}

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

.table-actions button {
  height: 30px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 750;
}

.status {
  font-size: 13px;
  color: var(--muted);
  text-align: right;
  overflow-wrap: anywhere;
}

.table-wrap {
  overflow: auto;
  min-height: 260px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  min-width: 1340px;
  font-size: 13px;
}

th, td {
  border-bottom: 1px solid #edf0f5;
  padding: 10px 11px;
  text-align: left;
  vertical-align: middle;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f8fafc;
  color: #475467;
  font-size: 12px;
  font-weight: 750;
  border-bottom: 1px solid var(--line);
}

tbody tr:hover { background: #f8fbfb; }

tbody tr[data-record-key],
tbody tr[data-group-record-keys] {
  cursor: pointer;
}

tbody tr.selected-row td {
  background: #e7f4f2;
}

tbody tr.selected-row:hover td {
  background: #dff0ed;
}

tbody tr.partial-selected-row td {
  background: #f2f8f7;
}

.group-row td {
  background: #eef4f6;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: #344054;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
}

.group-row:hover td {
  background: #eef4f6;
}

.group-row.selected-row td {
  background: #dff0ed;
}

.group-row.partial-selected-row td {
  background: #edf7f5;
}

.meta-record td:first-child {
  border-left: 3px solid #d4a574;
  padding-left: 12px;
}

.video-record td:first-child {
  border-left: 3px solid #6aa6b8;
  padding-left: 12px;
}

.group-title {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.group-name {
  color: var(--ink);
  font-weight: 850;
}

.group-meta {
  color: var(--muted);
  font-weight: 700;
}

.track-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.track-name::before {
  content: "";
  width: 14px;
  height: 1px;
  background: #aab4c3;
}

.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-variant-numeric: tabular-nums;
}

.pending {
  color: #98a2b3;
}

.new-value {
  color: var(--warn);
  font-weight: 750;
}

.fps-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 800;
  background: #f2f4f7;
  color: #475467;
}

.fps-badge.ixml {
  background: #ecfdf3;
  color: #087443;
  border: 1px solid #abefc6;
}

.fps-badge.ltc {
  background: #eef4ff;
  color: #175cd3;
  border: 1px solid #b2ccff;
}

.fps-badge.video {
  background: #eff8ff;
  color: #026aa2;
  border: 1px solid #b9e6fe;
}

.ltc-value-ok {
  color: #0f8f5f;
  font-weight: 850;
  background: #ecfdf3;
}

.ltc-value-warn {
  color: var(--warn);
  font-weight: 850;
  background: #fff3e5;
}

.empty {
  height: 210px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--muted);
  font-size: 17px;
  font-weight: 650;
  background: linear-gradient(180deg, #fff, #fbfcfd);
  user-select: none;
  cursor: pointer;
}

.empty:hover,
.empty:focus-visible {
  color: var(--accent-strong);
  background: linear-gradient(180deg, #fbfffe, #f4fbfa);
  outline: none;
}

.empty::before {
  content: "↓";
  width: 56px;
  height: 56px;
  border: 3px solid var(--line);
  border-radius: 50%;
  font-size: 28px;
  line-height: 50px;
  text-align: center;
  color: var(--muted);
}

.empty:hover::before,
.empty:focus-visible::before {
  border-color: rgba(28, 127, 119, 0.35);
  color: var(--accent-strong);
}

.log {
  min-height: 46px;
  max-height: 100px;
  overflow: auto;
  border-top: 1px solid var(--line);
  background: var(--soft);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  padding: 10px 14px;
  white-space: pre-wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  height: 22px;
  border-radius: 999px;
  padding: 0 8px;
  font-size: 12px;
  font-weight: 700;
}

.pill.ok { color: var(--ok); background: #e6f4ee; }
.pill.idle { color: #475467; background: #edf1f5; }
.pill.warn { color: var(--warn); background: #fff3e5; }
.pill.err { color: var(--danger); background: #fef0ef; }

#previewTable[data-ltc-visible="false"] .ltc-col {
  display: none;
}

@media (max-width: 1500px) {
  .toolbar {
    grid-template-columns: max-content max-content minmax(0, 1fr);
  }
  .ltc-tools {
    grid-column: 1 / -1;
    justify-self: start;
    max-width: 100%;
  }
}

@media (max-width: 1180px) {
  .toolbar {
    grid-template-columns: max-content max-content;
  }
  .toolbar-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 1050px) {
  .calc-expression {
    grid-template-columns: 122px minmax(var(--timecode-control-width), 1fr) 52px minmax(var(--calc-b-width), 1fr);
    grid-template-areas:
      "fps a op b"
      ". . eq result"
      ". . . actions"
      ". notes notes notes";
  }
  .calc-result,
  .calc-result-field {
    width: 100%;
  }
  .calc-equals {
    justify-self: end;
  }
  .calc-actions {
    justify-content: flex-start;
  }
  .calc-notes {
    justify-self: start;
    max-width: none;
  }
}

@media (max-width: 980px) {
  header { align-items: flex-start; flex-direction: column; }
  .header-meta { justify-content: flex-start; }
  .toolbar { grid-template-columns: max-content max-content; }
  .toolbar-actions,
  .ltc-tools { grid-column: 1 / -1; }
  .stats { grid-template-columns: repeat(2, minmax(130px, 1fr)); }
  .calc-expression {
    grid-template-columns: 122px minmax(var(--timecode-control-width), 1fr) 52px;
    grid-template-areas:
      "fps a op"
      ". b b"
      ". eq result"
      ". . actions"
      "notes notes notes";
  }
}

@media (max-width: 620px) {
  :root { --page-x: 14px; }
  .toolbar { grid-template-columns: 1fr; }
  .timecode-control,
  .toolbar .timecode-control,
  .calc-expression .timecode-control,
  .calc-fps-field,
  .calc-b-field,
  .calc-result { width: 100%; }
  .ltc-tools { width: 100%; justify-self: stretch; }
  .ltc-actions { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr; }
  .calc-expression {
    grid-template-columns: 1fr;
    grid-template-areas:
      "fps"
      "a"
      "op"
      "b"
      "eq"
      "result"
      "actions"
      "notes";
  }
  .calc-op-stack,
  .calc-operator { width: 100%; }
  .calculator .calc-swap-btn { width: 100%; }
  .calc-equals, .calc-result, .calc-actions { grid-column: auto; }
  .calc-equals {
    justify-self: center;
    width: 100%;
  }
  .calc-actions { display: grid; grid-template-columns: 1fr; }
  button { width: 100%; justify-content: center; }
  .table-head {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }
  .table-actions { width: 100%; }
  .status { text-align: left; }
}
footer {
  padding: 12px 24px;
  font-size: 13px;
  color: var(--muted);
}
footer .footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
footer .github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s;
}
footer .github-link:hover {
  color: var(--accent);
}
footer .github-link svg {
  width: 16px;
  height: 16px;
}
footer .copyright {
  font-size: 12px;
  color: var(--muted);
}
#progressOverlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
#progressOverlay.show {
  display: flex;
}
#progressBox {
  background: var(--panel);
  border-radius: 12px;
  padding: 32px 40px;
  min-width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  text-align: center;
}
#progressBox .progress-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}
#progressBox .progress-file {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
#progressBox .progress-track {
  width: 100%;
  height: 8px;
  background: var(--line);
  border-radius: 4px;
  overflow: hidden;
}
#progressBox .progress-fill {
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 4px;
  transition: width .3s ease;
}
#progressBox .progress-pct {
  font-size: 13px;
  color: var(--muted);
  margin-top: 8px;
}
#confirmOverlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.42);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1100;
  padding: 20px;
}
#confirmOverlay.show {
  display: flex;
}
.confirm-dialog {
  width: min(460px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 24px 70px rgba(0,0,0,.28);
  padding: 24px;
}
.confirm-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}
.confirm-copy {
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 18px;
}
.confirm-copy strong {
  color: var(--danger);
  font-weight: 700;
}
.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.confirm-actions button {
  width: auto;
}
.confirm-actions [hidden] {
  display: none !important;
}
#toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 28px;
  box-shadow: 0 8px 30px rgba(0,0,0,.15);
  font-size: 14px;
  font-weight: 600;
  color: var(--ok);
  opacity: 0;
  transition: opacity .3s ease, transform .3s ease;
  z-index: 1001;
  pointer-events: none;
}
#toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}