:root {
  --bg: #0a0a0c;
  --bg-elev: #131318;
  --card: #16161c;
  --card-2: #1c1c24;
  --line: rgba(255,255,255,.08);
  --line-2: rgba(255,255,255,.14);
  --text: #ececf1;
  --muted: #9a9aa6;
  --dim: #6b6b78;
  --accent: #f2b544;
  --accent-2: #ffd27a;
  --accent-ink: #1a1200;
  --accent-glow: rgba(242,181,68,.35);
  --ok: #6fd39a;
  --err: #ff6b6b;
  --warn: #ffb15c;
  --radius: 18px;
  --shadow: 0 20px 60px rgba(0,0,0,.45), 0 1px 0 rgba(255,255,255,.04) inset;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
button, input, a { font: inherit; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
[hidden] { display: none !important; }

/* фон: мягкое янтарное свечение сверху */
.bg {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 40% at 50% -5%, rgba(242,181,68,.16), transparent 70%),
    radial-gradient(40% 30% at 85% 10%, rgba(120,90,255,.08), transparent 70%),
    var(--bg);
}

.top { display: flex; align-items: center; padding: 22px 28px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); font-weight: 600; letter-spacing: .2px; }
.logo:hover { text-decoration: none; }
.logo b { color: var(--accent); font-weight: 700; }

.wrap { width: 100%; max-width: 680px; margin: 0 auto; padding: 24px 20px 40px; flex: 1; }

.hero { text-align: center; margin: 24px 0 28px; }
.hero h1 { font-size: clamp(34px, 6vw, 48px); font-weight: 700; letter-spacing: -.02em; margin: 0 0 12px; }
.sub { color: var(--muted); font-size: 17px; margin: 0; }

.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  transition: border-color .25s;
}
.state { animation: fade .35s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* drop-зона */
.drop {
  border: 1.5px dashed var(--line-2);
  border-radius: 14px;
  padding: 36px 20px 26px;
  text-align: center;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .2s, background .2s, transform .2s;
  outline: none;
}
.drop:hover, .drop:focus-visible { border-color: var(--accent); background: rgba(242,181,68,.04); }
.drop.over { border-color: var(--accent); background: rgba(242,181,68,.08); transform: scale(1.01); }
.drop-ico { width: 44px; height: 44px; color: var(--accent); margin-bottom: 8px; }
.drop-text { display: flex; flex-direction: column; gap: 4px; margin-bottom: 14px; }
.drop-text strong { color: var(--text); font-size: 17px; }
.drop-text span { font-size: 13px; color: var(--dim); }
.drop-hint { margin-top: 16px; font-size: 13px; color: var(--dim); }

/* инфо о файле */
.fileinfo { margin-top: 16px; padding: 14px 16px; background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px; }
.fi-row { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.fi-name { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.fi-meta { display: flex; gap: 14px; color: var(--muted); font-size: 14px; margin-top: 4px; }
.link { background: none; border: 0; color: var(--muted); cursor: pointer; padding: 0; font-size: 14px; }
.link:hover { color: var(--accent); }

/* кнопки */
.actions { display: flex; justify-content: center; margin-top: 18px; }
.actions-row { gap: 10px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border-radius: 12px; padding: 12px 22px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; transition: transform .15s, box-shadow .2s, background .2s, opacity .2s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: 0 8px 24px var(--accent-glow); }
.btn-primary:not(:disabled):hover { background: var(--accent-2); box-shadow: 0 10px 30px var(--accent-glow); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.btn-text { background: transparent; color: var(--muted); }
.btn-text:hover { color: var(--text); }

/* сообщения */
.msg { margin-top: 12px; padding: 10px 14px; border-radius: 10px; font-size: 14px; }
.msg-warn { background: rgba(255,177,92,.1); color: var(--warn); }
.msg-err { background: rgba(255,107,107,.1); color: var(--err); }

/* работа */
.work-head { display: flex; align-items: center; gap: 16px; }
.work-title { font-weight: 600; font-size: 17px; }
.work-sub { color: var(--muted); font-size: 14px; min-height: 20px; }
.spinner {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  border: 3px solid var(--line-2); border-top-color: var(--accent);
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.bar { height: 6px; background: var(--bg-elev); border-radius: 6px; overflow: hidden; margin-top: 18px; }
.bar-fill { height: 100%; width: 0%; background: linear-gradient(90deg, var(--accent), var(--accent-2)); border-radius: 6px; transition: width .25s; }
.bar.indeterminate .bar-fill { width: 35%; animation: slide 1.4s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(300%); } }
.work-file { margin-top: 12px; color: var(--dim); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* результат */
.done-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 12px; }
.done-title { font-weight: 700; font-size: 18px; color: var(--ok); }
.done-meta { color: var(--dim); font-size: 13px; }
.result {
  white-space: pre-wrap; word-wrap: break-word;
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 12px;
  padding: 18px; max-height: 52vh; overflow: auto; font-size: 15.5px; line-height: 1.65;
  outline: none;
}
.result:focus-visible { border-color: var(--accent); }

/* ошибка */
.fail-ico { width: 44px; height: 44px; border-radius: 50%; margin: 0 auto 12px; display: grid; place-items: center; background: rgba(255,107,107,.12); color: var(--err); font-weight: 800; font-size: 22px; }
.fail-title { text-align: center; font-weight: 700; font-size: 18px; }
.fail-text { text-align: center; color: var(--muted); margin-top: 6px; }

/* фичи */
.feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 26px; }
.feat { padding: 14px 16px; border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.015); }
.feat b { display: block; font-size: 14px; margin-bottom: 4px; }
.feat span { font-size: 13px; color: var(--muted); }

.foot { color: var(--dim); font-size: 13px; text-align: center; padding: 24px 20px 32px; display: flex; flex-direction: column; gap: 6px; align-items: center; }
.terms { max-width: 560px; text-align: left; color: var(--muted); font-size: 13px; margin-top: 8px; padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
.terms p { margin: 0 0 8px; }
.terms p:last-child { margin: 0; }

@media (max-width: 640px) {
  .top { padding: 16px 18px; }
  .card { padding: 16px; }
  .drop { padding: 28px 14px 20px; }
  .feats { grid-template-columns: 1fr; }
  .actions-row .btn { flex: 1 1 45%; }
}
@media (prefers-reduced-motion: reduce) {
  .state, .drop, .btn, .bar-fill { animation: none; transition: none; }
}