:root {
  --bg: #F2F4F8;
  --card: #FFFFFF;
  --ink: #111318;
  --ink-2: #4B5565;
  --ink-3: #8A94A6;
  --line: #E3E7EE;
  --blue: #3D7EFF;
  --blue-glow: rgba(61, 126, 255, .85);
  --green: #12A150;
  --red: #D92D20;
  --amber: #B54708;
  --radius: 20px;
  --sans: "Plus Jakarta Sans", Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --shadow: 0 1px 2px rgba(17, 19, 24, .04), 0 8px 28px rgba(17, 19, 24, .06);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0) env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
}
[hidden] { display: none !important; }
button { font-family: inherit; cursor: pointer; }

.wrap { max-width: 880px; margin: 0 auto; padding: 40px 18px 56px; }

/* ---------- Brand ---------- */
.brand { text-align: center; margin-bottom: 26px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ink); color: #DCE6FF;
  font: 500 11px/1 var(--mono); letter-spacing: .14em;
  padding: 8px 14px; border-radius: 999px;
}
.pulse { width: 7px; height: 7px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 10px var(--blue-glow); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; transform: scale(.8); } }
h1 { font-size: clamp(34px, 7vw, 54px); line-height: 1.05; letter-spacing: -.035em; font-weight: 800; margin: 4px 0 10px; }
.sub { color: var(--ink-2); margin: 0 auto; max-width: 480px; font-size: 16px; }

/* ---------- Panel ---------- */
.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 18px;
}
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; background: var(--bg); border: 1px solid var(--line); border-radius: 14px; padding: 4px; margin-bottom: 14px; }
.seg-btn {
  border: 0; background: transparent; color: var(--ink-2);
  font-weight: 600; font-size: 15px; padding: 11px 10px; border-radius: 10px;
  transition: background .18s, color .18s, box-shadow .18s;
}
.seg-btn:hover { color: var(--ink); }
.seg-btn.is-active { background: var(--ink); color: #fff; box-shadow: 0 4px 14px rgba(17, 19, 24, .22); }
.seg-btn:focus-visible, .btn-primary:focus-visible, .icon-btn:focus-visible, .option:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

.field { display: flex; gap: 10px; flex-wrap: wrap; }
.input-wrap { position: relative; flex: 1 1 260px; min-width: 0; }
.input-wrap input {
  width: 100%; height: 54px; padding: 0 56px 0 16px;
  border: 1.5px solid var(--line); border-radius: 14px; background: #FAFBFD;
  font: 500 15px var(--sans); color: var(--ink); outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}
.input-wrap input::placeholder { color: var(--ink-3); }
.input-wrap input:focus { border-color: var(--blue); background: #fff; box-shadow: 0 0 0 4px rgba(61, 126, 255, .14); }
.icon-btn {
  position: absolute; right: 7px; top: 7px; width: 40px; height: 40px;
  display: grid; place-items: center; border: 0; border-radius: 10px;
  background: var(--bg); color: var(--ink-2); transition: background .15s, color .15s;
}
.icon-btn:hover { background: var(--ink); color: #fff; }
.btn-primary {
  height: 54px; padding: 0 26px; border: 0; border-radius: 14px;
  background: var(--ink); color: #fff; font-weight: 700; font-size: 16px; letter-spacing: -.01em;
  transition: transform .12s, background .15s, box-shadow .15s; flex: 0 0 auto;
}
.btn-primary:hover:not(:disabled) { background: #1d2230; box-shadow: 0 8px 22px rgba(17, 19, 24, .25); }
.btn-primary:active:not(:disabled) { transform: scale(.98); }
:is(.btn-primary, .icon-btn, .seg-btn):disabled { opacity: .5; cursor: not-allowed; }
@media (max-width: 520px) { .btn-primary { width: 100%; } }

/* ---------- Platform badge ---------- */
.badge-row { display: flex; align-items: center; gap: 8px; margin-top: 14px; min-height: 28px; }
.pbadge {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px 6px 9px;
  border-radius: 999px; background: var(--bg); border: 1px solid var(--line);
  font: 600 12px/1 var(--mono); letter-spacing: .02em; color: var(--ink);
}
.pbadge svg { width: 16px; height: 16px; display: block; }
.pbadge.unknown { color: var(--ink-3); }

/* ---------- Messages ---------- */
.msg { margin-top: 14px; padding: 12px 14px; border-radius: 12px; font-size: 14px; font-weight: 500; border: 1px solid; }
.msg-notice { background: #EEF4FF; border-color: #CFE0FF; color: #1D4ED8; }
.msg-notice.ok { background: #ECFDF3; border-color: #ABEFC6; color: #067647; }
.msg-error { background: #FEF3F2; border-color: #FECDCA; color: #B42318; }

/* ---------- Processing card ---------- */
.proc {
  margin-top: 18px; padding: 32px 22px 28px; border-radius: var(--radius);
  background: var(--ink); color: #fff; box-shadow: 0 18px 50px rgba(17, 19, 24, .28);
  text-align: center; overflow: hidden; position: relative;
}
.proc::before {
  content: ""; position: absolute; inset: -40% -10% auto; height: 80%;
  background: radial-gradient(closest-side, rgba(61, 126, 255, .22), transparent);
  pointer-events: none;
}
.kinetic { font: 700 clamp(22px, 5.4vw, 34px)/1.2 var(--mono); letter-spacing: -.01em; white-space: nowrap; position: relative; }
.k {
  display: inline-block; color: #EAF1FF;
  text-shadow: 0 0 12px var(--blue-glow), 0 0 30px rgba(61, 126, 255, .35);
  animation: wave 1.5s cubic-bezier(.45, .05, .55, .95) infinite;
  animation-delay: calc(var(--i) * 70ms);
}
@keyframes wave { 0%, 100% { transform: translateY(0); opacity: .7; } 50% { transform: translateY(-10px); opacity: 1; } }
.bar { margin: 24px auto 6px; height: 4px; max-width: 420px; background: rgba(255, 255, 255, .1); border-radius: 99px; overflow: hidden; position: relative; }
.bar i { position: absolute; inset: 0 auto 0 0; width: 38%; border-radius: 99px; background: linear-gradient(90deg, transparent, var(--blue), #8DB4FF); animation: slide 1.25s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-110%); } 100% { transform: translateX(290%); } }

/* ---------- Result ---------- */
.result {
  margin-top: 18px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; display: grid; gap: 18px; grid-template-columns: 1fr;
  animation: rise .35s ease both;
}
@keyframes rise { from { opacity: 0; transform: translateY(10px); } }
@media (min-width: 760px) { .result { grid-template-columns: 340px 1fr; align-items: start; } }
.thumb { position: relative; aspect-ratio: 16 / 9; border-radius: 14px; overflow: hidden; background: var(--ink); }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb-fallback { position: absolute; inset: 0; display: none; place-items: center; background: linear-gradient(135deg, #1b2030, #0d0f14); color: #fff; }
.thumb-fallback svg { width: 42px; height: 42px; opacity: .85; }
.thumb.no-img .thumb-fallback { display: grid; }
.thumb.no-img img { display: none; }
.chip {
  position: absolute; right: 8px; bottom: 8px; padding: 4px 8px; border-radius: 8px;
  background: rgba(17, 19, 24, .88); color: #fff; font: 500 12px/1 var(--mono);
}
.meta h2 { font-size: 17px; line-height: 1.3; margin: 12px 0 4px; letter-spacing: -.01em; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.meta p { margin: 0; color: var(--ink-2); font-size: 14px; }
.meta .badge-row { margin-top: 12px; min-height: 0; }

.options { display: grid; gap: 10px; }
.option {
  width: 100%; text-align: left; display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center;
  padding: 14px; border: 1.5px solid var(--line); border-radius: 16px; background: #FAFBFD; color: var(--ink);
  transition: background .16s, color .16s, border-color .16s, transform .12s, box-shadow .16s;
}
.option:hover:not(:disabled) { background: var(--ink); color: #fff; border-color: var(--ink); transform: translateY(-1px); box-shadow: 0 12px 28px rgba(17, 19, 24, .22); }
.option:active:not(:disabled) { transform: scale(.99); }
.option:disabled { opacity: .55; cursor: not-allowed; }
.res {
  min-width: 78px; text-align: center; padding: 9px 10px; border-radius: 10px;
  background: var(--ink); color: #fff; font: 700 13px/1 var(--mono); letter-spacing: .02em; transition: background .16s, color .16s;
}
.option:hover:not(:disabled) .res { background: var(--blue); }
.o-title { font-weight: 700; font-size: 15px; letter-spacing: -.01em; }
.o-desc { font-size: 12.5px; color: var(--ink-2); margin-top: 2px; transition: color .16s; }
.option:hover:not(:disabled) .o-desc { color: #B7C3DD; }
.o-side { text-align: right; display: grid; gap: 6px; justify-items: end; }
.o-size { font: 500 13px/1 var(--mono); }
.o-fmt { font: 700 10.5px/1 var(--mono); letter-spacing: .08em; padding: 4px 7px; border-radius: 6px; background: #E8EDF7; color: #3B4558; transition: background .16s, color .16s; }
.option:hover:not(:disabled) .o-fmt { background: rgba(255, 255, 255, .14); color: #fff; }
@media (max-width: 520px) {
  .option { grid-template-columns: auto 1fr; }
  .o-side { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; }
  .res { min-width: 70px; }
}

.foot { text-align: center; color: var(--ink-3); font-size: 12.5px; margin-top: 30px; }

@media (prefers-reduced-motion: reduce) {
  .k, .bar i, .pulse, .caret { animation: none; }
  .bar i { width: 100%; opacity: .6; }
  .result { animation: none; }
}