/* ── Design tokens ──────────────────────────────────────────────────────────
   Premium dusk theme: deep violet-tinted charcoal, glassy layered cards,
   restrained warm-orange accent (CTA + progress only — never washes).
   [data-theme="light"] is the day version. */
:root {
  /* deep indigo-violet dusk — rich, not black; warm accent used sparingly */
  --bg1: #0B0A14; --bg2: #17152B;
  --card: #14131F; --card-2: #1B1A2A;
  --line: rgba(255, 255, 255, .08);
  --line-soft: rgba(255, 255, 255, .05);
  --fg: #F0EFF7; --muted: #9997B0;
  --accent: #FF7E36;            /* brand orange — CTA + progress only */
  --accent-soft: #FFA168;       /* readable orange for text on dark */
  --accent-ink: #210E00;        /* text on accent */
  --accent-2: #E9BE8C;          /* soft gold — labels/slogans */
  --accent-grad: linear-gradient(135deg, #FF9A55 0%, #FF6E28 100%);
  --danger: #FF7A96;
  --ok: #FFA168;
  --radius: 20px;
  --radius-sm: 12px;
  --glow: 0 6px 24px rgba(255, 110, 40, .28);
  --shadow: 0 18px 50px rgba(5, 4, 14, .55);
  --field: rgba(10, 9, 20, .45);
  --glass: rgba(255, 255, 255, .035);
  --glass-hi: rgba(255, 255, 255, .07);
  --ring: 0 0 0 3px rgba(255, 126, 54, .22);
}
[data-theme="light"] {
  --bg1: #F8F7FC; --bg2: #ECEAF6;
  --card: #FFFFFF; --card-2: #F4F3FA;
  --line: #E5E2F0;
  --line-soft: #EEECF6;
  --fg: #1B1830; --muted: #6E6B85;
  --accent: #EE660D; --accent-soft: #D95B0A; --accent-ink: #FFFFFF;
  --accent-2: #B07A2A;
  --accent-grad: linear-gradient(135deg, #FF8A3C 0%, #EE5F0A 100%);
  --danger: #DE4763;
  --ok: #D95B0A;
  --glow: 0 8px 22px rgba(238, 102, 13, .22);
  --shadow: 0 14px 36px rgba(40, 32, 80, .10);
  --field: #F2F0F9;
  --glass: #F7F6FC;
  --glass-hi: #EFEDF8;
  --ring: 0 0 0 3px rgba(238, 102, 13, .18);
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
[data-theme="light"] html { color-scheme: light; }
::selection { background: rgba(255, 126, 54, .30); }
body {
  margin: 0;
  font-family: -apple-system, "SF Pro Display", "Segoe UI", Inter, "Noto Sans HK",
               system-ui, sans-serif;
  color: var(--fg);
  line-height: 1.55;
  min-height: 100vh;
  /* layered dusk: indigo aurora top, violet drift right, near-black floor */
  background:
    radial-gradient(1100px 640px at 18% -12%, rgba(101, 96, 255, .16), transparent 60%),
    radial-gradient(900px 560px at 88% 8%, rgba(168, 96, 255, .10), transparent 62%),
    radial-gradient(760px 520px at 50% 108%, rgba(255, 110, 40, .05), transparent 65%),
    linear-gradient(165deg, var(--bg2) 0%, var(--bg1) 55%, #080810 100%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}
[data-theme="light"] body {
  background:
    radial-gradient(1100px 640px at 18% -12%, rgba(120, 110, 255, .10), transparent 60%),
    radial-gradient(900px 560px at 88% 8%, rgba(180, 120, 255, .07), transparent 62%),
    linear-gradient(165deg, var(--bg2) 0%, var(--bg1) 60%, var(--bg1) 100%);
}

/* ── Header ─────────────────────────────────────────────────────────────── */
header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 26px; max-width: 780px; margin: 0 auto;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 650; font-size: 20px; letter-spacing: -.02em; }
.brand .logo { height: 28px; width: 28px; }
.brand span { font-size: 15px; color: var(--accent-2); font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.balance { color: var(--muted); }
.balance b { color: var(--fg); font-variant-numeric: tabular-nums; }
#auth-user { color: var(--fg); font-weight: 550; }

/* ── Layout ─────────────────────────────────────────────────────────────── */
main {
  max-width: 780px; margin: 0 auto; padding: 8px 22px 90px;
  display: grid; gap: 22px;
}
.card {
  background: linear-gradient(180deg, var(--glass) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow);
}
h1 {
  font-size: 31px; line-height: 1.15; margin: 0 0 6px; font-weight: 650; letter-spacing: -.03em;
  background: linear-gradient(120deg, var(--fg) 55%, #B9B4E6 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
[data-theme="light"] h1 { background: none; color: var(--fg); }
h2 { font-size: 19px; margin: 0 0 4px; font-weight: 600; letter-spacing: -.02em; }
h3 { font-weight: 600; }
.sub { color: var(--muted); margin: 0 0 22px; font-size: 14.5px; }
.slogan { color: var(--accent-2); font-weight: 600; font-size: 15px; margin: 0 0 12px; letter-spacing: .01em; }

/* small uppercase tracked labels */
.field > label, details > label, .gloss-bar-label {
  display: block; font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 9px; font-weight: 600;
}

/* ── Dropzone ───────────────────────────────────────────────────────────── */
.drop {
  display: flex; align-items: center; justify-content: center; text-align: center;
  border: 1.5px dashed var(--line); border-radius: var(--radius);
  padding: 40px 18px; color: var(--muted); cursor: pointer;
  transition: border-color .18s, color .18s, background .18s, box-shadow .18s; min-height: 110px;
  background: var(--field);
}
.drop { flex-direction: column; gap: 8px; }
.drop:hover, .drop.hot {
  border-color: var(--accent); color: var(--fg);
  background: rgba(255, 126, 54, .04);
  box-shadow: inset 0 0 40px rgba(255, 126, 54, .05);
}
/* a file has been chosen — make the bubble visibly "loaded" */
.drop.has-file {
  border-style: solid; border-color: var(--accent);
  background: rgba(255, 126, 54, .10);
  color: var(--fg);
}
.drop.has-file #drop-label { color: var(--accent-soft); font-weight: 600; }
.drop-hint { font-size: 12px; color: var(--muted); letter-spacing: .01em; }

/* How it works */
.steps { display: flex; gap: 16px; flex-wrap: wrap; }
.step {
  flex: 1; min-width: 200px;
  background: linear-gradient(180deg, var(--glass) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius); padding: 22px;
  box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow);
}
.step-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.step-n {
  width: 30px; height: 30px; border-radius: 10px; display: flex; align-items: center;
  justify-content: center; font-weight: 700; color: var(--accent-soft);
  background: rgba(255, 126, 54, .10); border: 1px solid rgba(255, 126, 54, .28);
}
.step-icon { width: 24px; height: 24px; color: var(--accent-soft); opacity: .8; }
.step b { font-size: 16px; letter-spacing: -.01em; }
.step p { color: var(--muted); font-size: 13.5px; margin: 6px 0 0; }

/* Feature grid */
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; margin-top: 14px; }
.feat b { font-size: 15px; color: var(--fg); }
.feat b::before { content: ""; display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-grad); margin-right: 9px; vertical-align: middle; }
.feat p { color: var(--muted); font-size: 13.5px; margin: 7px 0 0; padding-left: 16px; }

/* FAQ */
.faq details {
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 14px 16px;
  margin: 0 0 10px; background: var(--card-2);
}
.faq summary { color: var(--fg); font-weight: 600; font-size: 14.5px; }
.faq p { color: var(--muted); font-size: 14px; margin: 10px 0 0; }

/* Blog */
.article { max-width: 760px; margin: 30px auto 64px; padding: 44px 48px;
  background: linear-gradient(180deg, var(--glass) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow); }
@media (max-width: 640px) { .article { margin: 14px; padding: 28px 22px; } }
.article h1 { font-size: 30px; margin: 8px 0 6px; letter-spacing: -.02em; }
.article .meta { color: var(--muted); font-size: 13px; margin-bottom: 22px; }
.article h2 { font-size: 20px; margin: 28px 0 8px; }
.article p, .article li { font-size: 15.5px; line-height: 1.75; }
.article ul { padding-left: 20px; }
.article a { color: var(--accent-soft); }
.article table { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 14px; }
.article th, .article td { border: 1px solid var(--line); padding: 9px 11px; text-align: left; }
.article th { color: var(--muted); background: var(--card-2); }
.article .tldr { background: var(--card-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 16px 18px; margin: 8px 0 24px; }
.article .tldr b { color: var(--accent-2); }
.article .cta { display: inline-block; margin-top: 26px; background: var(--accent-grad);
  color: var(--accent-ink); padding: 13px 24px; border-radius: 999px; font-weight: 600;
  text-decoration: none; box-shadow: var(--glow); }
.blog-list { max-width: 720px; margin: 0 auto; padding: 8px 20px 60px; display: grid; gap: 16px; }
.blog-list > h1 { font-size: 28px; margin: 6px 0 10px; }
.blog-card { background: linear-gradient(180deg, var(--glass) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px; box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow);
  text-decoration: none; display: block; transition: border-color .15s, transform .15s; }
.blog-card:hover { border-color: rgba(255, 126, 54, .35); transform: translateY(-1px); }
.blog-card h3 { margin: 0 0 6px; color: var(--fg); font-size: 18px; }
.blog-card p { margin: 0; color: var(--muted); font-size: 14px; }
.back-link { display: inline-block; color: var(--accent-soft); margin: 12px 0 4px; text-decoration: none; font-size: 14px; }

/* Footer + download label */
.footer { text-align: center; color: var(--muted); font-size: 13px; padding: 10px 0 24px; }
.footer-credit { font-size: 12px; opacity: .8; margin-top: 5px; }
.dl-label { color: var(--muted); font-size: 13px; align-self: center; margin-right: 4px; }

.row { display: flex; gap: 22px; margin: 20px 0; flex-wrap: wrap; }
.field { flex: 1; min-width: 220px; }
.toggle label, .chk { font-size: 14px; margin-right: 16px; cursor: pointer; }
.toggle input, .chk input { accent-color: var(--accent); }

details { margin: 10px 0 20px; }
summary { cursor: pointer; color: var(--accent-soft); font-size: 13.5px; font-weight: 550;
          letter-spacing: -.01em; }
summary::marker { color: var(--muted); }

textarea, input[type=text], input[type=email], input[type=password] {
  width: 100%; background: var(--field); color: var(--fg);
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 12px 14px; font-family: inherit; font-size: 14px;
  transition: border-color .15s, box-shadow .15s;
}
textarea:focus, input:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
code {
  background: var(--field); padding: 2px 6px; border-radius: 6px; font-size: 12px;
  color: var(--accent-2);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */
button {
  background: var(--accent-grad); color: var(--accent-ink); border: 0;
  border-radius: 999px; padding: 13px 22px; font-size: 15px; font-weight: 650;
  cursor: pointer; width: 100%; letter-spacing: -.01em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .25), var(--glow);
  transition: transform .12s, box-shadow .15s, opacity .15s, filter .15s;
}
button:hover { transform: translateY(-1px); filter: saturate(1.08); }
button:active { transform: translateY(0); }
button:disabled { opacity: .45; cursor: default; box-shadow: none; transform: none; }
button:focus-visible { outline: none; box-shadow: var(--ring); }
button.ghost {
  background: transparent; color: var(--fg); border: 1px solid var(--line); box-shadow: none;
}
button.ghost:hover { border-color: var(--glass-hi); background: var(--glass); }
button.mini { width: auto; padding: 10px 16px; font-size: 13px; box-shadow: none;
              background: var(--card-2); color: var(--fg); border: 1px solid var(--line); }
button.mini:hover { border-color: rgba(255, 126, 54, .40); filter: none; }
button.mini.ghost { background: transparent; color: var(--muted); }
button.link {
  width: auto; background: none; border: 0; color: var(--accent-soft); padding: 0;
  font-size: 14px; font-weight: 550; box-shadow: none; letter-spacing: 0;
}
/* header nav stays quiet — orange only on hover, CTA keeps the spotlight */
.header-right a.link, .header-right button.link {
  color: var(--muted); text-decoration: none; transition: color .15s;
}
.header-right a.link:hover, .header-right button.link:hover { color: var(--accent-soft); }
.header-right #auth-open { color: var(--fg); font-weight: 600; }
.header-right select {
  background: var(--card-2); color: var(--fg); border: 1px solid var(--line);
  border-radius: 9px; padding: 5px 8px; font-size: 13px;
}
#theme-toggle {
  width: 34px; height: 34px; padding: 0; border-radius: 50%;
  background: var(--card-2); border: 1px solid var(--line); color: var(--fg);
  box-shadow: none; font-size: 15px; line-height: 1;
}

/* ── Progress ───────────────────────────────────────────────────────────── */
.progress, .result, .error { margin-top: 22px; }
.hidden { display: none; }
.progress .prow {
  display: flex; justify-content: space-between; align-items: baseline;
  color: var(--muted); font-size: 13px; letter-spacing: .04em; margin-bottom: 10px;
  text-transform: uppercase; font-weight: 600;
}
.progress #pct { color: var(--accent-soft); font-size: 15px; font-variant-numeric: tabular-nums; }
.bar {
  height: 12px; background: var(--field); border-radius: 999px; overflow: hidden;
  border: 1px solid var(--line);
}
#bar-fill {
  height: 100%; width: 0%; border-radius: 999px;
  background: var(--accent-grad);
  box-shadow: 0 0 14px rgba(255, 110, 40, .45); transition: width .45s ease;
}
.steam-quote { color: var(--accent-2); font-size: 13px; margin-top: 11px; text-align: center; min-height: 18px; }
.result h3 { color: var(--ok); margin: 0 0 6px; }
.editor {
  max-height: 340px; overflow-y: auto; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: var(--field); padding: 6px;
}
.editor::-webkit-scrollbar { width: 10px; }
.editor::-webkit-scrollbar-thumb { background: var(--glass-hi); border-radius: 999px;
  border: 2px solid transparent; background-clip: padding-box; }
.seg { display: flex; gap: 12px; align-items: flex-start; padding: 6px 8px; }
.seg + .seg { border-top: 1px solid var(--line-soft); }
.seg .ts {
  color: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums;
  white-space: nowrap; padding-top: 11px; min-width: 148px;
}
.seg-lines { flex: 1; display: flex; flex-direction: column; gap: 6px; }
.seg-text, .seg-en {
  width: 100%; background: var(--card); color: var(--fg);
  border: 1px solid transparent; border-radius: 8px; padding: 8px 10px; font-size: 14px;
}
.seg-en { color: var(--muted); font-size: 13px; }
.seg-text:focus, .seg-en:focus { outline: none; border-color: var(--accent); box-shadow: var(--ring); }
.download-bar { display: flex; gap: 10px; margin-top: 14px; flex-wrap: wrap; }
#share-btn.share {
  width: 100%; margin-top: 12px; background: transparent; color: var(--accent-soft);
  border: 1px solid rgba(255, 126, 54, .40); box-shadow: none; font-size: 14px;
}
#share-btn.share:hover { background: rgba(255, 126, 54, .07); }
.ok-note { color: var(--ok); font-size: 14px; margin-top: 6px; }
/* grouped options panel: video format + output languages */
.opts-panel { margin: 6px 0 16px; display: grid; gap: 20px; }
.opts-panel .field { margin: 0; }
.opts-panel > .field > label { display: block; margin-bottom: 11px; font-weight: 600; font-size: 13.5px; }
.opt-hint { color: var(--muted); font-weight: 400; font-size: 12.5px;
  text-transform: none; letter-spacing: normal; }

/* option chips: quiet glass at rest — orange appears only when selected */
.seg-toggle { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.seg-toggle label { display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 14px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--glass); color: var(--fg);
  cursor: pointer; font-size: 14px; text-align: center;
  transition: border-color .15s, background .15s, color .15s; }
.seg-toggle label:hover { border-color: rgba(255, 126, 54, .45); }
.seg-toggle input { position: absolute; opacity: 0; pointer-events: none; }
.seg-toggle label:has(input:checked) { border-color: rgba(255, 126, 54, .65);
  background: rgba(255, 126, 54, .10); color: var(--accent-soft); font-weight: 600; }

.lang-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.lang-chip { display: flex; align-items: center; gap: 10px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px; background: var(--glass);
  cursor: pointer; font-size: 14px; transition: border-color .15s, background .15s; }
.lang-chip:hover { border-color: rgba(255, 126, 54, .45); }
.lang-chip input { width: 17px; height: 17px; accent-color: var(--accent); flex: none; }
.lang-chip:has(input:checked) { border-color: rgba(255, 126, 54, .65);
  background: rgba(255, 126, 54, .10); }
@media (max-width: 520px) { .seg-toggle, .lang-grid { grid-template-columns: 1fr; } }
.variant-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.variant-tab { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: var(--card-2); color: var(--muted); font-size: 13px; cursor: pointer;
  transition: border-color .15s, color .15s; }
.variant-tab.active { border-color: rgba(255, 126, 54, .65); color: var(--accent-soft);
  background: rgba(255, 126, 54, .08); }
.dl-langs { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; width: 100%; }
.dl-fmts { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.prow-right { display: flex; gap: 10px; align-items: baseline; }
#eta { color: var(--muted); font-size: 12px; text-transform: none; letter-spacing: normal; }
.error { color: var(--danger); font-size: 14px; }

/* ── Pricing ────────────────────────────────────────────────────────────── */
.packs, .plans { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 14px; }
.pack, .plan {
  flex: 1; min-width: 160px; background: var(--card-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 20px; transition: border-color .15s;
}
.pack:hover, .plan:hover { border-color: rgba(255, 126, 54, .35); }
/* quiet outline Buy buttons — the hero CTA keeps the only filled orange */
.pack button, .plan button {
  background: transparent; color: var(--accent-soft);
  border: 1px solid rgba(255, 126, 54, .45); box-shadow: none;
  transition: background .15s, color .15s, border-color .15s, transform .12s;
}
.pack button:hover, .plan button:hover {
  background: var(--accent-grad); color: var(--accent-ink); border-color: transparent;
}
.pack b, .plan b { font-size: 22px; letter-spacing: -.02em; }
.pack .rate, .plan .rate { color: var(--muted); font-size: 13px; margin: 6px 0 14px; }
.plan ul { padding-left: 18px; margin: 10px 0 0; color: var(--muted); font-size: 13px; }

/* ── Glossary bar ───────────────────────────────────────────────────────── */
.gloss-locked { padding: 4px 0 2px; }
.gloss-locked p { color: var(--muted); font-size: 13.5px; margin: 6px 0 12px; }
.gloss-bar { display: flex; gap: 10px; margin-bottom: 6px; }
.gloss-bar select {
  flex: 1; background: var(--field); color: var(--fg); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 11px 12px; font-size: 14px;
}

/* ── Auth modal ─────────────────────────────────────────────────────────── */
.modal {
  position: fixed; inset: 0; background: rgba(8, 7, 18, .72);
  backdrop-filter: blur(8px); display: flex; align-items: center; justify-content: center;
  z-index: 50;
}
.modal-box {
  background: linear-gradient(180deg, var(--glass) 0%, transparent 55%), var(--card);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px; width: 360px; max-width: 92vw;
  box-shadow: inset 0 1px 0 var(--glass-hi), var(--shadow);
}
.modal-box h3 { margin: 0 0 4px; }
.modal-box input, .modal-box textarea { margin-top: 12px; }
.modal-actions { display: flex; gap: 12px; margin-top: 16px; }
.modal-actions button { flex: 1; }
#auth-close { display: block; margin: 14px auto 0; }