/* ---------- Tokens ----------
   Text colors meet WCAG AA contrast (4.5:1) against the surfaces they sit on.
   Colors are defined by role, so both themes stay consistent. Light is the default; dark
   applies when the system prefers it (unless the visitor picked light) or when chosen. */
:root {
  --bg: #f7f5f0;
  --bg-glow: rgb(10 143 176 / 7%);
  --surface: #ffffff;
  --surface-2: #f3f0e9;
  --surface-3: #ebe7de;
  --ink: #16191d;
  --ink-2: #4a4f57;
  --ink-3: #686d75;
  --line: rgb(22 25 29 / 9%);
  --line-strong: rgb(22 25 29 / 16%);
  --accent: #066c84;
  --accent-hover: #055a6e;
  --accent-soft: rgb(6 108 132 / 10%);
  --on-accent: #ffffff;
  --green: #12803a;
  --red: #c4453b;
  --warn: #845a00;
  --warn-soft: #fbf1d5;
  --warn-line: #e9c46a;
  --topbar: rgb(247 245 240 / 78%);
  --shadow-card: 0 1px 2px rgb(22 25 29 / 4%), 0 12px 32px -12px rgb(22 25 29 / 12%);
  --shadow-float: 0 20px 60px -20px rgb(22 25 29 / 30%);
  --focus: 0 0 0 3px rgb(6 108 132 / 35%);

  --sans:
    -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', Arial,
    sans-serif;
  --display:
    -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue',
    Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme='light']) {
    --bg: #0c0e11;
    --bg-glow: rgb(61 184 218 / 9%);
    --surface: #15181d;
    --surface-2: #1b1f25;
    --surface-3: #242931;
    --ink: #f2f1ed;
    --ink-2: #b8bcc3;
    --ink-3: #868b93;
    --line: rgb(255 255 255 / 8%);
    --line-strong: rgb(255 255 255 / 15%);
    --accent: #45bddd;
    --accent-hover: #6fcde6;
    --accent-soft: rgb(69 189 221 / 14%);
    --on-accent: #06171d;
    --green: #4cc47a;
    --red: #eb7a71;
    --warn: #f0c35a;
    --warn-soft: rgb(240 195 90 / 12%);
    --warn-line: rgb(240 195 90 / 45%);
    --topbar: rgb(12 14 17 / 72%);
    --shadow-card: 0 0 0 1px rgb(255 255 255 / 4%), 0 16px 40px -16px rgb(0 0 0 / 60%);
    --shadow-float: 0 24px 70px -20px rgb(0 0 0 / 70%);
    --focus: 0 0 0 3px rgb(69 189 221 / 40%);
    color-scheme: dark;
  }
}

:root[data-theme='dark'] {
  --bg: #0c0e11;
  --bg-glow: rgb(61 184 218 / 9%);
  --surface: #15181d;
  --surface-2: #1b1f25;
  --surface-3: #242931;
  --ink: #f2f1ed;
  --ink-2: #b8bcc3;
  --ink-3: #868b93;
  --line: rgb(255 255 255 / 8%);
  --line-strong: rgb(255 255 255 / 15%);
  --accent: #45bddd;
  --accent-hover: #6fcde6;
  --accent-soft: rgb(69 189 221 / 14%);
  --on-accent: #06171d;
  --green: #4cc47a;
  --red: #eb7a71;
  --warn: #f0c35a;
  --warn-soft: rgb(240 195 90 / 12%);
  --warn-line: rgb(240 195 90 / 45%);
  --topbar: rgb(12 14 17 / 72%);
  --shadow-card: 0 0 0 1px rgb(255 255 255 / 4%), 0 16px 40px -16px rgb(0 0 0 / 60%);
  --shadow-float: 0 24px 70px -20px rgb(0 0 0 / 70%);
  --focus: 0 0 0 3px rgb(69 189 221 / 40%);
  color-scheme: dark;
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Author display rules (for example .file-banner { display: flex }) would otherwise override
   the hidden attribute and show elements that should be invisible. */
[hidden] {
  display: none !important;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1100px 520px at 50% -180px, var(--bg-glow), transparent 70%), var(--bg);
  color: var(--ink);
  font: 16px/1.5 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  color: var(--accent-hover);
}

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

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.wrap {
  width: min(1120px, 100% - 40px);
  margin-inline: auto;
}

.icon {
  width: 18px;
  height: 18px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ---------- Controls ---------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition:
    background-color 0.15s var(--ease),
    border-color 0.15s var(--ease),
    transform 0.15s var(--ease);
}
.button:hover {
  background: var(--surface-2);
}
.button:active {
  transform: scale(0.97);
}
.button.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}
.button.primary:hover {
  background: var(--ink-2);
  border-color: var(--ink-2);
}
.button .icon {
  width: 16px;
  height: 16px;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition:
    background-color 0.15s var(--ease),
    color 0.15s var(--ease);
}
.icon-button:hover {
  background: var(--surface-2);
  color: var(--ink);
}
.icon-button.subtle {
  border-color: transparent;
  background: transparent;
}
.icon-button.subtle:hover {
  background: var(--surface-3);
}

.segmented {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border-radius: 999px;
  background: var(--surface-3);
}
.segmented button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 32px;
  padding: 0 14px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color 0.2s var(--ease),
    color 0.2s var(--ease),
    box-shadow 0.2s var(--ease);
}
.segmented button:hover {
  color: var(--ink);
}
.segmented button[aria-pressed='true'],
.segmented button[aria-selected='true'] {
  background: var(--surface);
  color: var(--ink);
  box-shadow:
    0 1px 2px rgb(0 0 0 / 8%),
    0 2px 8px -2px rgb(0 0 0 / 10%);
}
.segmented .icon {
  width: 16px;
  height: 16px;
}

.chip {
  min-height: 30px;
  padding: 0 11px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition:
    background-color 0.15s var(--ease),
    color 0.15s var(--ease);
}
.chip:hover {
  background: var(--surface-3);
  color: var(--ink);
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border-radius: 999px;
  font: 600 13px/1 var(--mono);
}
.pill:empty {
  display: none;
}
.pill.warn {
  background: var(--warn-soft);
  color: var(--warn);
  border: 1px solid var(--warn-line);
}

/* ---------- Top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--topbar);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
}
.brand {
  font: 700 23px/1 var(--mono);
  letter-spacing: -0.03em;
  color: var(--ink);
}
.brand:hover {
  color: var(--ink);
}
.brand b {
  color: var(--accent);
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.lang .short {
  display: none;
}
#theme .icon-sun {
  display: none;
}
:root[data-resolved-theme='dark'] #theme .icon-sun {
  display: block;
}
:root[data-resolved-theme='dark'] #theme .icon-moon {
  display: none;
}

/* ---------- Hero ---------- */
.hero {
  padding: 44px 0 28px;
  text-align: center;
}
.eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}
h1 {
  margin: 0 auto;
  max-width: 820px;
  font-family: var(--display);
  font-size: clamp(32px, 5vw, 54px);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -0.035em;
  text-wrap: balance;
}
.sub {
  margin: 14px auto 0;
  max-width: 640px;
  color: var(--ink-2);
  font-size: clamp(16px, 1.8vw, 19px);
  line-height: 1.45;
  text-wrap: balance;
}
.letters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.letters li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px 7px 12px;
  border-radius: 999px;
  background: var(--surface);
  box-shadow: var(--shadow-card);
  animation: rise 0.6s var(--ease) both;
  animation-delay: calc(0.15s + var(--i) * 0.08s);
}
.letters .old {
  color: var(--ink-3);
  font-size: 15px;
  text-decoration: line-through;
  text-decoration-color: var(--red);
  text-decoration-thickness: 1.5px;
}
.letters .arrow {
  color: var(--ink-3);
  font-size: 13px;
}
.letters .new {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}

/* ---------- Converter ---------- */
.converter {
  position: relative;
  padding: 14px;
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}
.converter-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 2px 2px 12px;
}
.status {
  color: var(--ink-3);
  font-size: 13px;
}

.direction {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 10px;
  margin-bottom: 12px;
}
.picker {
  display: grid;
  gap: 5px;
  min-width: 0;
}
.picker-label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 20px;
  padding-left: 4px;
  color: var(--ink-3);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.detected {
  color: var(--green);
  font-weight: 600;
}
.detected:empty {
  display: none;
}
.detected::before {
  content: '·';
  margin-right: 6px;
  color: var(--ink-3);
}
select {
  appearance: none;
  width: 100%;
  min-height: 46px;
  padding: 0 40px 0 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background-color: var(--surface-2);
  background-image:
    linear-gradient(45deg, transparent 50%, var(--ink-3) 50%),
    linear-gradient(135deg, var(--ink-3) 50%, transparent 50%);
  background-position:
    calc(100% - 20px) 21px,
    calc(100% - 15px) 21px;
  background-size: 5px 5px;
  background-repeat: no-repeat;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  text-overflow: ellipsis;
  transition: border-color 0.15s var(--ease);
}
select:hover {
  border-color: var(--line-strong);
}
.swap {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink-2);
  cursor: pointer;
  transition:
    transform 0.35s var(--ease),
    background-color 0.15s var(--ease),
    color 0.15s var(--ease);
}
.swap:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.swap:active {
  transform: rotate(180deg);
}
.swap:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}
.pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background: var(--surface-2);
  transition: background-color 0.2s var(--ease);
}
.pane.output {
  background: var(--surface);
}
.pane.dropping {
  background: var(--accent-soft);
}
textarea {
  display: block;
  flex: 1;
  width: 100%;
  min-height: 220px;
  max-height: 62vh;
  padding: 18px 20px 8px;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 19px;
  line-height: 1.55;
  resize: none;
  overflow-y: auto;
}
textarea:focus-visible {
  box-shadow: none;
}
textarea::placeholder {
  color: var(--ink-3);
}
textarea[readonly] {
  cursor: text;
}
textarea.stale {
  opacity: 0.45;
  transition: opacity 0.2s var(--ease);
}
.pane-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 56px;
  padding: 8px 10px 10px 16px;
}
.pane-tools {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}
.pane-tools .button {
  margin-left: 4px;
}
.examples {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.examples-label {
  color: var(--ink-3);
  font-size: 13px;
}
.count {
  margin-right: 4px;
  color: var(--ink-3);
  font: 12px var(--mono);
  white-space: nowrap;
}
.converter-foot {
  position: relative;
}
.privacy {
  position: absolute;
  top: 4px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  margin: 0;
  color: var(--ink-3);
  font-size: 13px;
}
/* With a Word file open, examples and clearing don't apply. */
.converter[data-doc-open] .examples,
.converter[data-doc-open] #clear {
  display: none;
}
.privacy .icon {
  width: 14px;
  height: 14px;
}
#copy .icon-check {
  display: none;
}
#copy.copied .icon-check {
  display: block;
  color: var(--green);
}
#copy.copied .icon-copy {
  display: none;
}

.dropzone {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 56px 24px;
  border-radius: var(--radius-md);
  border: 1.5px dashed var(--line-strong);
  background: var(--surface-2);
  text-align: center;
  transition:
    border-color 0.2s var(--ease),
    background-color 0.2s var(--ease);
}
.dropzone.dropping {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.dropzone-icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: var(--accent-soft);
  color: var(--accent);
}
.dropzone-icon .icon {
  width: 26px;
  height: 26px;
}
.dropzone-title {
  margin: 4px 0 6px;
  font-family: var(--display);
  font-size: 21px;
  font-weight: 650;
  letter-spacing: -0.015em;
}
.dropzone-formats {
  max-width: 520px;
  margin: 6px 0 0;
  color: var(--ink-3);
  font-size: 13px;
}

.file-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  padding: 10px 8px 10px 14px;
  border-radius: var(--radius-md);
  background: var(--accent-soft);
  color: var(--ink);
}
.file-banner > .icon {
  color: var(--accent);
  width: 22px;
  height: 22px;
}
.file-banner-text {
  display: grid;
  min-width: 0;
  flex: 1;
  font-size: 13px;
  color: var(--ink-2);
}
.file-banner-text strong {
  color: var(--ink);
  font-size: 15px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.notice {
  margin: 0 0 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  background: var(--warn-soft);
  border: 1px solid var(--warn-line);
  font-size: 14px;
}

.options {
  margin-top: 6px;
  padding: 0 6px;
}
.options summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 40px;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
}
.options summary::-webkit-details-marker {
  display: none;
}
.options summary::before {
  content: '';
  width: 6px;
  height: 6px;
  border-right: 1.8px solid currentColor;
  border-bottom: 1.8px solid currentColor;
  transform: rotate(-45deg);
  transition: transform 0.2s var(--ease);
}
.options[open] summary::before {
  transform: rotate(45deg);
}
.options-body {
  display: grid;
  gap: 12px;
  padding: 4px 0 10px;
}
.check {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--ink-2);
}
.check input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}
.field {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: var(--ink-2);
}
.field input {
  min-height: 42px;
  padding: 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
}

/* ---------- Review bar ---------- */
.review-bar {
  margin-top: 10px;
  border-radius: var(--radius-md);
  background: var(--warn-soft);
  border: 1px solid var(--warn-line);
}
.review-bar summary {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 46px;
  padding: 0 14px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  border-radius: var(--radius-md);
}
.review-bar summary::-webkit-details-marker {
  display: none;
}
.review-bar summary > .icon:first-child {
  color: var(--warn);
}
.review-bar .chevron {
  margin-left: auto;
  color: var(--ink-3);
  transition: transform 0.2s var(--ease);
}
.review-bar[open] .chevron {
  transform: rotate(180deg);
}
.review-list {
  display: grid;
  gap: 8px;
  padding: 0 10px 10px;
}
h2 {
  margin: 0;
  font-family: var(--display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
}
h3 {
  margin: 0;
  font-family: var(--display);
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.group {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface);
}
.group p {
  margin: 0 0 10px;
  color: var(--ink-2);
  font-size: 14px;
}
.words {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.word {
  padding: 4px 9px;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: 15px;
  line-height: 1.3;
}
.word mark {
  background: var(--warn-soft);
  color: inherit;
  border-radius: 3px;
  box-shadow: inset 0 -2px 0 var(--warn-line);
}
.word small {
  margin-left: 5px;
  color: var(--ink-3);
  font: 12px var(--mono);
}
.word.muted {
  color: var(--ink-3);
}
.alts {
  margin-top: 10px;
  color: var(--ink-3);
  font: 12px var(--mono);
}

/* ---------- Top bar buttons and panels ---------- */
.topbar-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 38px;
  padding: 0 12px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--ink-2);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color 0.15s var(--ease),
    color 0.15s var(--ease);
}
.topbar-button:hover {
  background: var(--surface-3);
  color: var(--ink);
}

dialog.sheet {
  width: min(520px, 100% - 32px);
  max-height: min(640px, 100% - 48px);
  margin: auto;
  padding: 20px 22px 22px;
  border: 0;
  border-radius: var(--radius-lg);
  background: var(--surface);
  color: var(--ink);
  box-shadow: var(--shadow-float);
  overflow-y: auto;
}
dialog.sheet[open] {
  animation: sheet-in 0.22s var(--ease);
}
dialog.sheet::backdrop {
  background: rgb(0 0 0 / 32%);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}
@keyframes sheet-in {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
}
.sheet-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: -4px -8px 12px 0;
}
.sheet-head h2 {
  font-size: 20px;
}
/* Focus starts on the title so screen readers announce it, without a visible ring. */
.sheet-head h2:focus {
  outline: none;
  box-shadow: none;
}
.sheet-text {
  margin: 0 0 16px;
  color: var(--ink-2);
  font-size: 15px;
}
.about-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.about-list li {
  display: flex;
  gap: 14px;
}
.about-list li > .icon {
  width: 22px;
  height: 22px;
  margin-top: 1px;
  color: var(--accent);
}
.about-list p {
  margin: 4px 0 0;
  color: var(--ink-2);
  font-size: 14px;
  line-height: 1.5;
}
.commands {
  display: grid;
  gap: 8px;
}
.command {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-height: 44px;
  padding: 0 12px 0 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
  cursor: pointer;
  transition: border-color 0.15s var(--ease);
}
.command:hover {
  border-color: var(--line-strong);
}
.command code {
  font: 14px var(--mono);
}
.command .icon {
  width: 16px;
  height: 16px;
  color: var(--ink-3);
}
.command.copied .icon {
  color: var(--green);
}
.sheet-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin: 16px 0 0;
  font-size: 14px;
  font-weight: 600;
}

/* ---------- Footer ---------- */
.footer {
  margin-top: 48px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 13px;
}
.legal {
  max-width: 760px;
  margin: 0 0 16px;
}
.footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}
.author {
  margin: 0;
  color: var(--ink-2);
}
.author strong {
  color: var(--ink);
}
.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.socials a {
  min-height: 32px;
  display: inline-flex;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  font-size: 13px;
  font-weight: 600;
  transition:
    color 0.15s var(--ease),
    border-color 0.15s var(--ease);
}
.socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.license {
  margin: 16px 0 0;
}

/* ---------- Drop overlay ---------- */
.drop-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 24px;
  background: rgb(0 0 0 / 22%);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  pointer-events: none;
  animation: fade 0.15s var(--ease);
}
.drop-overlay-card {
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 36px 48px;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--accent);
  background: var(--surface);
  box-shadow: var(--shadow-float);
  font-family: var(--display);
  font-size: 20px;
  font-weight: 650;
}
.drop-overlay-card p {
  margin: 0;
}
.drop-overlay-card .icon {
  width: 30px;
  height: 30px;
  color: var(--accent);
}
@keyframes fade {
  from {
    opacity: 0;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .panes {
    grid-template-columns: 1fr;
  }
  textarea {
    min-height: 150px;
    max-height: 45vh;
    font-size: 18px;
  }
}

@media (max-width: 600px) {
  .topbar-actions {
    gap: 4px;
  }
  .topbar-button span {
    display: none;
  }
  .topbar-button {
    width: 38px;
    padding: 0;
    justify-content: center;
  }
  dialog.sheet {
    width: 100%;
    max-width: 100%;
    max-height: 85vh;
    margin: auto 0 0;
    padding: 18px 18px calc(22px + env(safe-area-inset-bottom));
    border-radius: 22px 22px 0 0;
  }
  @keyframes sheet-in {
    from {
      transform: translateY(40px);
    }
  }
  .wrap {
    width: min(1120px, 100% - 24px);
  }
  .lang .long {
    display: none;
  }
  .lang .short {
    display: inline;
  }
  .lang button {
    padding: 0 11px;
  }
  .hero {
    padding: 26px 4px 18px;
  }
  .sub {
    font-size: 15px;
  }
  .letters {
    gap: 6px;
    margin-top: 16px;
  }
  .letters li {
    padding: 5px 10px 5px 9px;
    gap: 5px;
  }
  .letters .new {
    font-size: 19px;
  }
  .converter {
    padding: 10px;
    border-radius: 20px;
  }
  .converter-top {
    padding-bottom: 10px;
  }
  select {
    min-height: 44px;
    padding: 0 26px 0 10px;
    font-size: 14px;
    background-position:
      calc(100% - 14px) 20px,
      calc(100% - 9px) 20px;
  }
  .picker-label {
    font-size: 11px;
  }
  textarea {
    padding: 14px 14px 6px;
    font-size: 17px;
  }
  .pane-bar {
    padding: 6px 8px 8px 12px;
  }
  .privacy {
    position: static;
    min-height: 0;
    padding: 10px 6px 0;
    font-size: 12px;
  }
  .direction {
    grid-template-columns: 1fr 44px;
    grid-template-areas:
      'from swap'
      'to swap';
    align-items: center;
    gap: 8px;
  }
  .direction .picker:first-child {
    grid-area: from;
  }
  .direction .picker:last-child {
    grid-area: to;
  }
  .direction .swap {
    grid-area: swap;
    width: 44px;
    height: 100%;
    min-height: 96px;
    border-radius: 14px;
  }
  .direction .swap .icon {
    transform: rotate(90deg);
  }
  .picker {
    grid-template-columns: 1fr;
  }
  #download span {
    display: none;
  }
  #download {
    width: 38px;
    padding: 0;
  }
  .dropzone {
    padding: 36px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
}