/* danbuilds Translate — original branding inspired by a two-pane translator layout. */
:root {
  --teal: #0F6E6B;
  --teal-soft: #1A9A94;
  --teal-ink: #0A4F4D;
  --paper: #F6F4EF;
  --card: #FFFFFF;
  --ink: #1C1B19;
  --muted: #5E5C56;
  --line: #E4E2DB;
  --chip: transparent;
  --chip-active-bg: #E6F4F3;
  --chip-active: #0A4F4D;
  --shadow: 0 1px 2px rgba(28, 27, 25, 0.06), 0 8px 24px rgba(28, 27, 25, 0.06);
  --danger: #B42318;
  --ok: #0F6E6B;
  --radius: 16px;
  --font: "Source Sans 3", "Segoe UI", system-ui, sans-serif;
  --display: "Outfit", "Source Sans 3", system-ui, sans-serif;
  --topbar: 64px;
  --tabs: 48px;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --paper: #161514;
  --card: #232220;
  --ink: #F3F1EB;
  --muted: #B2AFA6;
  --line: #3A3935;
  --chip-active-bg: #1B3C3B;
  --chip-active: #8FDDD8;
  --teal: #3DC8C1;
  --teal-soft: #5ED4CE;
  --teal-ink: #8FDDD8;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.25);
  --danger: #FF8A80;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: var(--font);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.45;
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.topbar {
  height: var(--topbar);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
}
.brand img { display: block; border-radius: 8px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.05; }
.brand-kicker {
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 600;
}
.brand-name {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.03em;
}
.top-actions { display: flex; gap: 4px; }

.icon-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.icon-btn:hover:not(:disabled) { background: var(--line); color: var(--ink); }
.icon-btn:disabled { opacity: 0.35; cursor: default; }
.icon-btn svg { width: 22px; height: 22px; }
.icon-btn.is-active, .icon-btn[aria-pressed="true"] { color: var(--teal); background: var(--chip-active-bg); }

.tabs {
  display: flex;
  gap: 8px;
  padding: 0 16px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.tab {
  appearance: none;
  border: 0;
  background: none;
  color: var(--muted);
  font: 600 14px/1 var(--display);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: var(--tabs);
  padding: 0 14px;
  border-bottom: 3px solid transparent;
  cursor: default;
}
.tab svg { width: 20px; height: 20px; }
.tab.is-active { color: var(--teal); border-bottom-color: var(--teal); }

.stage {
  width: min(1120px, calc(100% - 24px));
  margin: 20px auto 40px;
}

.lang-bar {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  padding: 0 4px;
}
.lang-side {
  display: flex;
  align-items: center;
  min-width: 0;
}
.lang-side[data-side="target"] { justify-content: flex-end; }
.lang-chips {
  display: flex;
  gap: 2px;
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.lang-chips::-webkit-scrollbar { display: none; }
.lang-chip {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: 600 14px/1 var(--font);
  padding: 10px 12px;
  border-radius: 999px;
  white-space: nowrap;
  cursor: pointer;
}
.lang-chip:hover { background: var(--line); color: var(--ink); }
.lang-chip.is-active {
  color: var(--chip-active);
  background: var(--chip-active-bg);
}
.swap-btn { flex: 0 0 auto; }
.lang-more { flex: 0 0 auto; }

.boards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-height: 320px;
  overflow: hidden;
}
.board {
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
  padding: 16px 16px 8px;
}
.board-source { border-right: 1px solid var(--line); }
.board textarea,
.target-text {
  flex: 1;
  width: 100%;
  border: 0;
  resize: none;
  background: transparent;
  color: var(--ink);
  font: 400 24px/1.4 var(--font);
  min-height: 200px;
  outline: none;
}
.board textarea::placeholder { color: #9A978F; }
:root[data-theme="dark"] .board textarea::placeholder { color: #7A776F; }
.clear-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 1;
}
.target-body { flex: 1; min-height: 200px; }
.target-text { margin: 0; white-space: pre-wrap; word-break: break-word; }
.target-text:empty::before {
  content: "Translation";
  color: #9A978F;
}
:root[data-theme="dark"] .target-text:empty::before { color: #7A776F; }
.target-status {
  margin: 8px 0 0;
  color: var(--danger);
  font-size: 14px;
}
.target-status.is-info { color: var(--muted); }
.target-status.is-busy { color: var(--teal); }
.board-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 48px;
  padding-top: 4px;
}
.board-actions { display: flex; gap: 2px; }
.char-count, .detected {
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}
.char-count.is-over { color: var(--danger); font-weight: 600; }

.picker {
  position: fixed;
  inset: 0;
  background: rgba(28, 27, 25, 0.35);
  z-index: 40;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 8vh 16px 16px;
}
.picker[hidden] { display: none; }
.picker-panel {
  width: min(760px, 100%);
  max-height: 80vh;
  background: var(--card);
  border-radius: 20px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border: 1px solid var(--line);
}
.picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px 4px;
}
.picker-head h2 {
  margin: 0;
  font: 600 18px var(--display);
}
.picker-search {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 8px 16px 12px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
}
.picker-search svg { width: 18px; height: 18px; color: var(--muted); flex: 0 0 auto; }
.picker-search input {
  flex: 1;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: 16px var(--font);
  height: 42px;
  outline: none;
}
.picker-body { overflow: auto; padding: 0 8px 16px; }
.picker-section-title {
  margin: 8px 8px 4px;
  font: 600 12px var(--display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.picker-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 2px;
}
.picker-item {
  appearance: none;
  border: 0;
  background: transparent;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.picker-item:hover, .picker-item:focus-visible { background: var(--paper); }
.picker-item.is-active { background: var(--chip-active-bg); color: var(--chip-active); }
.picker-item .en { font-weight: 600; font-size: 14px; }
.picker-item .native { font-size: 13px; color: var(--muted); }
.picker-item.is-active .native { color: inherit; opacity: 0.8; }
.picker-empty { padding: 24px; text-align: center; color: var(--muted); }

.site-foot {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  padding: 8px 16px 32px;
}
.site-foot a { color: var(--teal-ink); }

.not-found {
  max-width: 480px;
  margin: 12vh auto;
  text-align: center;
  padding: 0 16px;
}
.not-found .brand { justify-content: center; margin-bottom: 24px; }
.btn-primary {
  display: inline-block;
  margin-top: 12px;
  background: var(--teal);
  color: #fff;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 999px;
  font-weight: 600;
}

@media (max-width: 800px) {
  .lang-bar {
    grid-template-columns: 1fr auto 1fr;
    margin-top: 4px;
  }
  .boards {
    grid-template-columns: 1fr;
    min-height: 0;
  }
  .board-source { border-right: 0; border-bottom: 1px solid var(--line); }
  .board textarea, .target-text, .target-body { min-height: 160px; font-size: 20px; }
  .lang-chip { padding: 10px 8px; font-size: 13px; }
  .stage { width: calc(100% - 16px); margin-top: 12px; }
}