:root {
  color-scheme: light dark;
  --bg: #fbf7f2;
  --surface: #ffffff;
  --surface-2: #f4ede4;
  --text: #2a211b;
  --muted: #6b5d52;
  --border: #e3d8cb;
  --accent: #c9461a;
  --accent-hover: #ac3a14;
  --on-accent: #ffffff;
  --ok: #1e7a45;
  --ok-bg: #e6f4ec;
  --bad: #b3261e;
  --bad-bg: #fcebe9;
  --focus: #1a5fd0;
  --shadow: 0 1px 2px rgba(60, 40, 20, .06), 0 4px 16px rgba(60, 40, 20, .06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17120e;
    --surface: #211a15;
    --surface-2: #2b221b;
    --text: #f3ebe2;
    --muted: #b3a597;
    --border: #3b2f26;
    --accent: #ff8a55;
    --accent-hover: #ffa076;
    --on-accent: #1d0e05;
    --ok: #66d19a;
    --ok-bg: #16281e;
    --bad: #ff8d84;
    --bad-bg: #331a18;
    --focus: #8ab4ff;
    --shadow: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
[hidden] { display: none !important; }

.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
  padding-left: max(1rem, env(safe-area-inset-left));
  padding-right: max(1rem, env(safe-area-inset-right));
}

h1 { font-size: 1.75rem; line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -.01em; }
h2 { font-size: 1.2rem; line-height: 1.3; margin: 0 0 .75rem; display: flex; align-items: center; gap: .5rem; }
h3 { font-size: 1rem; margin: 1.5rem 0 .5rem; }
p { margin: 0 0 .75rem; }
code { font: .9em ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; background: var(--surface-2); padding: .1em .35em; border-radius: 4px; overflow-wrap: anywhere; }
a { color: var(--accent); }
a:hover { color: var(--accent-hover); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.muted { color: var(--muted); font-size: .9rem; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.ver { font-size: .8rem; font-weight: 600; color: var(--muted); background: var(--surface-2); border: 1px solid var(--border); border-radius: 999px; padding: .05rem .45rem; vertical-align: middle; white-space: nowrap; }
.lede { font-size: 1.05rem; }
.privacy { display: flex; gap: .6rem; align-items: flex-start; color: var(--muted); font-size: .92rem; }
.ico { width: 1.25rem; height: 1.25rem; flex: none; fill: currentColor; }
.privacy .ico { color: var(--ok); margin-top: .1rem; }
.head { margin-bottom: 1.25rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
}
.step { display: inline-grid; place-items: center; width: 1.6rem; height: 1.6rem; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-size: .95rem; flex: none; }

/* Runtime card */
.runtime { padding: .9rem 1.25rem; }
.runtime-row { display: flex; align-items: center; gap: .6rem; }
.runtime-text { margin: 0; font-size: .95rem; overflow-wrap: anywhere; }
.runtime-icon { width: 1.1rem; height: 1.1rem; flex: none; border-radius: 50%; border: 2px solid var(--border); border-top-color: var(--accent); animation: spin .9s linear infinite; }
.runtime.ready .runtime-icon { animation: none; border: 0; background: var(--ok); mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20Zm-1.6 14.6-4-4 1.4-1.4 2.6 2.6 5.8-5.8 1.4 1.4-7.2 7.2Z'/%3E%3C/svg%3E") center / contain no-repeat; -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a10 10 0 1 0 0 20 10 10 0 0 0 0-20Zm-1.6 14.6-4-4 1.4-1.4 2.6 2.6 5.8-5.8 1.4 1.4-7.2 7.2Z'/%3E%3C/svg%3E") center / contain no-repeat; }
.runtime.failed .runtime-icon { animation: none; border-color: var(--bad); }
.runtime.ready .bar, .runtime.failed .bar { display: none; }
.runtime .callout { margin-top: .75rem; }

.bar { height: 8px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--border); overflow: hidden; margin-top: .6rem; position: relative; }
.bar > span { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width .2s ease; }
.bar.indeterminate > span { width: 35%; position: absolute; left: 0; animation: slide 1.3s ease-in-out infinite; transition: none; }

.callout { border-radius: 10px; padding: .75rem .9rem; font-size: .95rem; }
.callout p { margin: 0; }
.callout.bad { background: var(--bad-bg); border: 1px solid var(--bad); }

/* Step 1 */
.paths { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: .6rem; }
.paths li { background: var(--surface-2); border-radius: 10px; padding: .6rem .75rem; }
.os { display: block; font-size: .8rem; font-weight: 600; color: var(--muted); margin-bottom: .2rem; }
.path { display: block; background: none; padding: 0; font-size: .85rem; }

.drop {
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .25rem;
  min-height: 11rem;
  padding: 1.5rem 1rem;
  border: 2px dashed var(--accent);
  border-radius: 14px;
  background: var(--surface-2);
  text-align: center;
  cursor: pointer;
  transition: background .15s, border-color .15s;
  -webkit-tap-highlight-color: transparent;
}
.drop:hover, .drop.over { background: color-mix(in srgb, var(--accent) 12%, var(--surface-2)); }
.drop:focus-within { outline: 3px solid var(--focus); outline-offset: 3px; }
.drop.disabled { opacity: .5; cursor: not-allowed; border-color: var(--border); }
.drop-ico { width: 2.5rem; height: 2.5rem; fill: var(--accent); }
.drop-main { font-weight: 700; font-size: 1.1rem; }
.drop-sub { color: var(--muted); font-size: .9rem; }
.file-input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; font-size: 0; }
.file-input:disabled { cursor: not-allowed; }
@media (pointer: coarse) { .drop-sub { display: none; } }
.hint { margin: .75rem 0 0; color: var(--muted); font-size: .85rem; }

/* Busy */
.busy-row { display: flex; gap: 1rem; align-items: center; }
.busy-row h2 { margin: 0; }
.busy-file { margin: 0; color: var(--muted); font-size: .9rem; overflow-wrap: anywhere; }
.spinner { width: 2.25rem; height: 2.25rem; flex: none; border-radius: 50%; border: 4px solid var(--surface-2); border-top-color: var(--accent); animation: spin .9s linear infinite; }
.busy .muted { margin: .6rem 0 0; }

/* Success / fail */
.ok { border-color: var(--ok); }
.fail { border-color: var(--bad); }
.ok-ico { color: var(--ok); width: 1.6rem; height: 1.6rem; }
.bad-ico { color: var(--bad); width: 1.6rem; height: 1.6rem; }
h2:focus { outline: none; }
h2:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }

.hashes { margin: 1rem 0; display: grid; gap: .6rem; }
.hashes > div { background: var(--surface-2); border-radius: 10px; padding: .55rem .75rem; min-width: 0; }
.hashes dt { font-size: .75rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.hashes dd { margin: .15rem 0 0; font-size: .8rem; overflow-wrap: anywhere; word-break: break-all; user-select: all; }

.steps { padding-left: 1.4rem; margin: 0 0 1rem; }
.steps li { margin-bottom: .5rem; }

.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1rem; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 2.75rem; padding: .55rem 1.1rem;
  font: inherit; font-weight: 600; text-decoration: none; text-align: center;
  color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn:hover { background: var(--surface-2); color: var(--text); }
.btn:focus-visible, .guide-link:focus-visible, summary:focus-visible, pre:focus-visible, .faillist:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--on-accent); }
.btn.big { display: flex; width: 100%; min-height: 3.5rem; font-size: 1.15rem; margin-top: .5rem; }
.btn.big .ico { width: 1.5rem; height: 1.5rem; }

.fail-body p:last-child { margin-bottom: 0; }
.faillist { margin: 0; padding: .6rem .6rem .6rem 1.8rem; max-height: 14rem; overflow: auto; background: var(--surface-2); border-radius: 10px; font-size: .8rem; }
.faillist li { margin-bottom: .3rem; overflow-wrap: anywhere; }
.report-fallback { width: 100%; margin-top: .75rem; font-size: .8rem; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 10px; padding: .6rem; }

/* Log */
.log { background: var(--surface); border: 1px solid var(--border); border-radius: 14px; padding: .25rem 1.25rem; margin-bottom: 1rem; }
.log summary { cursor: pointer; padding: .75rem 0; font-weight: 600; }
.log pre { margin: 0 0 1rem; max-height: 20rem; overflow: auto; background: var(--surface-2); border-radius: 10px; padding: .75rem; font-size: .75rem; line-height: 1.45; white-space: pre-wrap; overflow-wrap: anywhere; }

.foot { color: var(--muted); font-size: .8rem; text-align: center; margin-top: 1.5rem; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes slide { 0% { left: -35%; } 100% { left: 100%; } }
@media (prefers-reduced-motion: reduce) {
  .spinner, .runtime-icon { animation-duration: 3s; }
  .bar.indeterminate > span { animation: none; width: 100%; opacity: .6; }
}

@media (min-width: 34rem) {
  .wrap { padding-top: 3rem; }
  .hashes { grid-template-columns: 1fr; }
}
@media (max-width: 22.5rem) {
  h1 { font-size: 1.5rem; }
  .card { padding: 1rem; }
}