:root {
  --bg:      #070a0e;
  --sf:      #0c1018;
  --sf2:     #111820;
  --bd:      #1a2030;
  --bd-hi:   #252d3d;
  --text:    #cdd6e0;
  --muted:   #4a5568;
  --dim:     #1e2738;
  --blue:    #00c8ff;
  --blue-bg: rgba(0,200,255,.07);
  --blue-hi: rgba(0,200,255,.18);
  --green:   #48bb78;
  --red:     #f56565;
  --orange:  #ed8936;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  -webkit-font-smoothing: antialiased;
}

body {
  display: grid;
  place-items: start center;
  min-height: 100vh;
  padding: 32px 20px 80px;
}

.shell {
  width: 100%;
  max-width: 580px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.wordmark-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 10px rgba(0,200,255,.6);
  flex-shrink: 0;
}

.wordmark-name {
  font-size: 13px;
  font-weight: 700;
  font-style: italic;
  letter-spacing: -.02em;
  color: var(--blue);
}

.wordmark-sep { color: var(--muted); }

.wordmark-sub {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: .04em;
}

.drop-zone {
  border: 1px dashed var(--bd-hi);
  border-radius: 3px;
  padding: 48px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color .15s, background .15s;
  cursor: default;
  position: relative;
}

.drop-zone.over {
  border-color: var(--blue);
  background: var(--blue-bg);
}

.drop-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}

.drop-icon {
  font-size: 32px;
  color: var(--muted);
  line-height: 1;
}

.drop-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.drop-hint {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .06em;
}

.drop-btn {
  pointer-events: all;
  margin-top: 4px;
  background: none;
  border: 1px solid var(--bd-hi);
  border-radius: 2px;
  padding: 7px 16px;
  font-family: inherit;
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
  transition: color .12s, border-color .12s;
}

.drop-btn:hover { color: var(--text); border-color: var(--bd-hi); }

.file-info {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: 3px;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fi-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.fi-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.fi-size {
  font-size: 11px;
  color: var(--muted);
  flex-shrink: 0;
}

.fi-clear {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
  flex-shrink: 0;
  transition: color .12s;
}

.fi-clear:hover { color: var(--red); }

.fi-meta { display: flex; gap: 6px; }

.fi-badge {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 2px;
  background: var(--blue-bg);
  border: 1px solid rgba(0,200,255,.2);
  color: var(--blue);
  letter-spacing: .06em;
}

.fi-badge.dim {
  background: rgba(255,255,255,.03);
  border-color: var(--bd);
  color: var(--muted);
}

.convert-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.from-badge {
  font-size: 11px;
  padding: 7px 12px;
  border-radius: 2px;
  background: var(--blue-bg);
  border: 1px solid rgba(0,200,255,.2);
  color: var(--blue);
  flex-shrink: 0;
  letter-spacing: .06em;
}

.arrow { color: var(--muted); font-size: 16px; flex-shrink: 0; }

.format-search-wrap { flex: 1; position: relative; }

#fmt-search {
  width: 100%;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: 2px;
  padding: 8px 12px;
  font-family: inherit;
  font-size: 12px;
  color: var(--text);
  outline: none;
  caret-color: var(--blue);
  transition: border-color .15s;
}

#fmt-search:focus { border-color: rgba(0,200,255,.3); }
#fmt-search::placeholder { color: var(--muted); }

.fmt-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: 2px;
  max-height: 300px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  z-index: 100;
  box-shadow: 0 8px 32px rgba(0,0,0,.6);
}

.fmt-cats {
  display: flex;
  gap: 2px;
  padding: 6px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--bd);
  flex-shrink: 0;
}

.fmt-cat-btn {
  font-family: inherit;
  font-size: 9px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 2px;
  border: 1px solid var(--bd);
  background: none;
  color: var(--muted);
  cursor: pointer;
  transition: .12s;
}

.fmt-cat-btn:hover, .fmt-cat-btn.active {
  border-color: rgba(0,200,255,.3);
  color: var(--blue);
  background: var(--blue-bg);
}

.fmt-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px;
}

.fmt-list::-webkit-scrollbar { width: 4px; }
.fmt-list::-webkit-scrollbar-track { background: transparent; }
.fmt-list::-webkit-scrollbar-thumb { background: var(--bd-hi); border-radius: 2px; }

.fmt-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 2px;
  cursor: pointer;
  transition: background .1s;
}

.fmt-item:hover, .fmt-item.focused {
  background: var(--blue-bg);
}

.fmt-item-name {
  font-size: 12px;
  color: var(--text);
  flex: 1;
}

.fmt-item-ext {
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .04em;
}

.fmt-item-rw {
  font-size: 9px;
  padding: 1px 5px;
  border-radius: 2px;
  flex-shrink: 0;
}

.fmt-item-rw.ok { background: rgba(72,187,120,.1); color: var(--green); }
.fmt-item-rw.ro { background: rgba(237,137,54,.08); color: var(--orange); }

.convert-btn {
  background: var(--blue-bg);
  border: 1px solid rgba(0,200,255,.25);
  border-radius: 2px;
  padding: 8px 18px;
  font-family: inherit;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--blue);
  cursor: pointer;
  flex-shrink: 0;
  transition: .15s;
}

.convert-btn:hover:not(:disabled) { background: var(--blue-hi); border-color: rgba(0,200,255,.5); }
.convert-btn:disabled { opacity: .3; cursor: not-allowed; }

.progress-wrap {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.progress-label {
  font-size: 11px;
  color: var(--text);
  letter-spacing: .06em;
}

.progress-bar {
  height: 2px;
  background: var(--bd);
  border-radius: 1px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--blue);
  border-radius: 1px;
  transition: width .3s ease;
  box-shadow: 0 0 6px var(--blue);
  width: 0%;
}

.progress-fill.indeterminate {
  animation: indeterminate 1.4s ease infinite;
  width: 40%;
}

@keyframes indeterminate {
  0%   { margin-left: -40%; }
  100% { margin-left: 100%; }
}

.progress-sub { font-size: 10px; color: var(--muted); }

.results { display: flex; flex-direction: column; gap: 8px; }

.result-card {
  background: var(--sf);
  border: 1px solid var(--bd);
  border-radius: 3px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.result-card.success { border-color: rgba(72,187,120,.25); }
.result-card.error { border-color: rgba(245,101,101,.2); }

.result-icon { font-size: 18px; flex-shrink: 0; }

.result-info { flex: 1; min-width: 0; }

.result-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-bottom: 3px;
}

.result-meta { font-size: 10px; color: var(--muted); }

.result-dl {
  background: none;
  border: 1px solid var(--bd);
  border-radius: 2px;
  padding: 6px 12px;
  font-family: inherit;
  font-size: 10px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: .12s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.result-dl:hover { color: var(--blue); border-color: rgba(0,200,255,.3); }

.sw-status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 10px;
  color: var(--muted);
  letter-spacing: .06em;
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
}

.sw-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--muted);
  flex-shrink: 0;
  transition: .3s;
}

.sw-dot.ok  { background: var(--green); box-shadow: 0 0 6px rgba(72,187,120,.6); }
.sw-dot.err { background: var(--red);   box-shadow: 0 0 6px rgba(245,101,101,.6); }
.sw-dot.loading { animation: blink .85s step-end infinite; }

@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.15} }

.fi-chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--sf2); border: 1px solid var(--bd);
  border-radius: 2px; padding: 3px 7px; font-size: 10px;
  color: var(--muted); max-width: 200px;
}
.fi-chip-ext {
  color: var(--blue); font-weight: 700; flex-shrink: 0;
}
.fi-chip-name {
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fi-chip-x {
  background: none; border: none; color: var(--muted);
  cursor: pointer; padding: 0; font-size: 10px; flex-shrink: 0;
  transition: color .1s;
}
.fi-chip-x:hover { color: var(--red); }

.result-dl-all {
  width: 100%; padding: 10px; background: var(--blue-bg);
  border: 1px solid rgba(0,200,255,.25); border-radius: var(--r);
  color: var(--blue); font-family: inherit; font-size: 12px;
  font-weight: 700; cursor: pointer; letter-spacing: .04em;
  transition: .12s; margin-bottom: 8px;
}
.result-dl-all:hover { background: var(--blue-hi); }