:root {
  --bg: #F5F5F7;
  --surface: #FFFFFF;
  --field: #F5F5F7;
  --fill: #E8E8ED;
  --text: #1D1D1F;
  --text-2: #6E6E73;
  --hairline: rgba(0, 0, 0, 0.1);
  --ring: #D2D2D7;
  --accent: #0071E3;
  --accent-hover: #0077ED;
  --link: #0066CC;
  --red: #FF3B30;
  --green: #34C759;
  --green-text: #1E7E34;
  --red-soft: #FFF0EF;
  --red-text: #C4170C;
  --nav-bg: rgba(245, 245, 247, 0.8);
  --focus: rgba(0, 113, 227, 0.25);
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Segoe UI Variable Text", "Segoe UI", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --surface: #1C1C1E;
    --field: #2C2C2E;
    --fill: #2C2C2E;
    --text: #F5F5F7;
    --text-2: #A1A1A6;
    --hairline: rgba(255, 255, 255, 0.12);
    --ring: #48484A;
    --accent: #0A84FF;
    --accent-hover: #409CFF;
    --link: #2997FF;
    --red: #FF453A;
    --green: #30D158;
    --green-text: #30D158;
    --red-soft: #3A1715;
    --red-text: #FF6961;
    --nav-bg: rgba(22, 22, 23, 0.8);
    --focus: rgba(10, 132, 255, 0.35);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.47 var(--font);
  letter-spacing: -0.022em;
  -webkit-font-smoothing: antialiased;
}
[hidden] { display: none !important; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2 { margin: 0; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: var(--nav-bg);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--hairline);
}
.nav-inner {
  max-width: 980px; margin: 0 auto; height: 52px; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.brand { color: var(--text); font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.brand:hover { text-decoration: none; }
.tabs { display: flex; gap: 2px; }
.tabs a {
  display: inline-flex; align-items: center; min-height: 36px; padding: 0 12px;
  border-radius: 980px; font-size: 14px; color: var(--text-2);
}
.tabs a:hover { color: var(--text); text-decoration: none; }
.tabs a[aria-current="page"] { color: var(--text); background: var(--fill); }

/* Banner */
.banner {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 10px 20px; font-size: 14px; color: var(--text-2);
  background: var(--surface); border-bottom: 1px solid var(--hairline); text-align: center;
}
.banner[data-kind="error"] { color: var(--red); }
.banner[data-kind="error"] .spinner { display: none; }
.spinner {
  width: 14px; height: 14px; flex: none; border-radius: 50%;
  border: 2px solid var(--ring); border-top-color: var(--text-2);
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Layout */
main { max-width: 720px; margin: 0 auto; padding: 0 20px 64px; }
.hero { text-align: center; padding: 72px 0 44px; }
.hero h1 { font-size: clamp(40px, 8vw, 64px); line-height: 1.05; font-weight: 700; letter-spacing: -0.035em; }
.hero p { max-width: 28em; margin: 16px auto 0; font-size: 21px; line-height: 1.38; color: var(--text-2); letter-spacing: -0.012em; }
.page-head { padding: 56px 0 28px; }
.page-head h1 { font-size: 48px; line-height: 1.08; font-weight: 700; letter-spacing: -0.03em; }
.page-head p { margin: 10px 0 0; font-size: 19px; color: var(--text-2); }

.panel { background: var(--surface); border-radius: 22px; padding: 36px; margin-bottom: 20px; }
.panel.flush { padding: 8px 24px; }
.panel h2, .recent h2, dialog h2 { font-size: 26px; line-height: 1.15; font-weight: 600; letter-spacing: -0.025em; }
.lede { margin: 6px 0 28px; color: var(--text-2); }
.muted { color: var(--text-2); margin: 0; }
.small { font-size: 14px; line-height: 1.43; }
.footnote { margin: 40px 0 0; text-align: center; font-size: 12px; color: var(--text-2); letter-spacing: 0; }

/* Recorder */
.recorder { display: flex; flex-direction: column; align-items: center; text-align: center; }
.rec-stage { position: relative; width: 220px; height: 220px; display: grid; place-items: center; }
.rec-stage canvas { position: absolute; inset: 0; width: 100%; height: 100%; }
.rec-btn {
  position: relative; width: 88px; height: 88px; padding: 0; border-radius: 50%;
  border: 4px solid var(--ring); background: var(--surface);
  display: grid; place-items: center; cursor: pointer;
}
.rec-btn:focus-visible { outline-offset: 4px; }
.rec-dot {
  width: 68px; height: 68px; border-radius: 50%; background: var(--red);
  transition: width 0.25s ease, height 0.25s ease, border-radius 0.25s ease;
}
.recorder[data-state="recording"] .rec-dot { width: 30px; height: 30px; border-radius: 7px; }
.recorder[data-state="review"] .rec-stage,
.recorder[data-state="review"] .rec-time,
.recorder[data-state="review"] .script { display: none; }
.rec-time { margin: 0 0 2px; font-size: 34px; font-weight: 600; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.script { margin-top: 18px; max-width: 34em; }
.script summary, .tune summary { cursor: pointer; color: var(--link); font-size: 15px; list-style: none; }
.script summary::-webkit-details-marker, .tune summary::-webkit-details-marker { display: none; }
.script p { margin: 12px 0 0; padding: 18px 20px; border-radius: 14px; background: var(--field); text-align: left; font-size: 17px; }
.rec-review { width: 100%; display: flex; flex-direction: column; gap: 18px; text-align: left; }
.rec-review audio, .result audio { width: 100%; }
.alt { margin: 22px 0 0; font-size: 15px; color: var(--text-2); }

/* Controls */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px; padding: 0 22px; border: 0; border-radius: 980px;
  background: var(--fill); color: var(--text);
  font: 500 17px/1 var(--font); letter-spacing: -0.02em; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; filter: brightness(0.97); }
.btn.primary { background: var(--accent); color: #FFFFFF; }
.btn.primary:hover { background: var(--accent-hover); filter: none; }
.btn.large { width: 100%; min-height: 52px; margin-top: 8px; }
.btn:disabled { opacity: 0.45; cursor: default; }
.linkish { padding: 0; border: 0; background: none; color: var(--link); font: inherit; letter-spacing: inherit; cursor: pointer; }
.linkish:hover { text-decoration: underline; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }

.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 18px; }
.field > span { font-size: 14px; color: var(--text-2); }
.field input, .field select, .field textarea {
  width: 100%; min-height: 48px; padding: 12px 16px;
  border: 1px solid transparent; border-radius: 12px;
  background: var(--field); color: var(--text);
  font: 17px/1.4 var(--font); letter-spacing: -0.02em;
}
.field textarea { resize: vertical; min-height: 140px; }
.field select { appearance: none; -webkit-appearance: none; padding-right: 40px;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-2) 50%), linear-gradient(135deg, var(--text-2) 50%, transparent 50%);
  background-position: calc(100% - 22px) 52%, calc(100% - 16px) 52%;
  background-size: 6px 6px; background-repeat: no-repeat; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 4px var(--focus); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.count { margin: -10px 0 14px; text-align: right; font-size: 13px; color: var(--text-2); font-variant-numeric: tabular-nums; }
.notice { margin: 0 0 20px; padding: 14px 18px; border-radius: 12px; background: var(--field); color: var(--text-2); }

.tune { margin: 4px 0 12px; }
.tune[open] summary { margin-bottom: 16px; }
.slider { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.slider > span { display: flex; justify-content: space-between; font-size: 15px; }
.slider output { color: var(--text-2); font-variant-numeric: tabular-nums; }
.slider input { width: 100%; accent-color: var(--accent); min-height: 28px; }

.result { display: flex; align-items: center; gap: 12px; margin-top: 20px; }
.result audio { flex: 1; min-width: 0; }

/* Lists */
.recent { margin-top: 44px; }
.recent h2 { margin-bottom: 14px; }
.recent .list { background: var(--surface); border-radius: 22px; padding: 0 24px; }
.list { list-style: none; margin: 0; padding: 0; }
.list:empty { display: none; }
.item { display: flex; align-items: center; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--hairline); }
.item:last-child { border-bottom: 0; }
.item-main { flex: 1; min-width: 0; }
.item-title { margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.item-sub { margin: 2px 0 0; display: flex; flex-wrap: wrap; gap: 0 12px; font-size: 13px; color: var(--text-2); }
.icon-btn {
  flex: none; width: 44px; height: 44px; display: grid; place-items: center;
  border: 0; border-radius: 50%; background: transparent; color: var(--text-2); cursor: pointer;
}
.icon-btn:hover { background: var(--fill); color: var(--text); }
.icon-btn.play { background: var(--fill); color: var(--text); }
.empty { margin: 0; padding: 20px 0; text-align: center; color: var(--text-2); }

/* Settings */
.facts { margin: 18px 0 0; }
.facts div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--hairline); }
.facts div:last-child { border-bottom: 0; }
.facts dt { color: var(--text-2); }
.facts dd { margin: 0; text-align: right; }
.drop {
  position: relative; display: grid; place-items: center; min-height: 120px; margin-bottom: 18px; padding: 20px;
  border: 1.5px dashed var(--ring); border-radius: 16px; color: var(--text-2); text-align: center; cursor: pointer;
}
.drop:hover, .drop.over { border-color: var(--accent); color: var(--text); }
.drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.drop:focus-within { border-color: var(--accent); box-shadow: 0 0 0 4px var(--focus); }
#update-result { margin-top: 16px; }
#backups-list { margin-top: 12px; }
.error { margin: 0 0 14px; color: var(--red); font-size: 15px; }

/* Dialog & toast */
dialog {
  width: min(440px, calc(100% - 32px)); padding: 32px; border: 0; border-radius: 22px;
  background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(0, 0, 0, 0.35); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 50;
  max-width: calc(100% - 32px); padding: 12px 20px; border-radius: 14px;
  background: var(--text); color: var(--bg); font-size: 15px; letter-spacing: -0.01em;
}
.toast[data-kind="error"] { background: var(--red); color: #FFFFFF; }

@media (max-width: 600px) {
  .panel { padding: 24px 20px; border-radius: 18px; }
  .panel.flush { padding: 4px 16px; }
  .recent .list { padding: 0 16px; }
  .hero { padding: 48px 0 32px; }
  .hero p { font-size: 19px; }
  .page-head h1 { font-size: 36px; }
  .grid2 { grid-template-columns: 1fr; }
  .tabs a { padding: 0 10px; }
  .result { flex-direction: column; align-items: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation-duration: 0.01ms !important; }
}

/* ---------- web edition additions ---------- */
.dot { width: 7px; height: 7px; margin-left: 6px; border-radius: 50%; background: var(--ring); display: inline-block; }
.dot.online { background: var(--green); }
.dot.offline { background: var(--red); }
.banner a { margin-left: 6px; }
.job-status { margin: 14px 0 0; text-align: center; font-size: 15px; color: var(--text-2); display: flex; align-items: center; justify-content: center; gap: 10px; }
.spaced { margin: 24px 0 8px; }
.steps { margin: 20px 0 0; padding-left: 22px; color: var(--text-2); font-size: 15px; }
.steps li { margin: 6px 0; }
.steps strong { color: var(--text); font-weight: 600; }
.center { text-align: center; margin-top: 24px; }
.status-online { color: var(--green-text); font-weight: 600; }
.status-offline { color: var(--red); font-weight: 600; }

/* Installer & sign-in */
.auth-page main.auth { max-width: 560px; padding: 64px 20px; }
.auth-title { text-align: center; font-size: 40px; font-weight: 700; letter-spacing: -0.03em; margin: 0 0 28px; }
.auth .panel h3 { margin: 28px 0 14px; font-size: 19px; font-weight: 600; letter-spacing: -0.02em; }
.alert { margin: 0 0 20px; padding: 14px 18px; border-radius: 12px; background: var(--red-soft); color: var(--red-text); font-size: 15px; }
.alert p { margin: 0; }
.alert p + p { margin-top: 4px; }
.checks { list-style: none; margin: 0 0 24px; padding: 0; }
.checks li { display: flex; flex-direction: column; gap: 2px; padding: 12px 0 12px 30px; border-bottom: 1px solid var(--hairline); position: relative; }
.checks li::before { position: absolute; left: 0; top: 12px; font-weight: 700; }
.checks li.ok::before { content: "✓"; color: var(--green-text); }
.checks li.bad::before { content: "✕"; color: var(--red); }
.checks span { font-size: 14px; color: var(--text-2); }
.choice { border: 0; margin: 0 0 18px; padding: 0; }
.choice legend { font-size: 14px; color: var(--text-2); margin-bottom: 8px; padding: 0; }
.choice label { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: 12px; background: var(--field); margin-bottom: 8px; cursor: pointer; }
.choice input { accent-color: var(--accent); margin-top: 4px; }
.choice span { display: flex; flex-direction: column; font-size: 15px; color: var(--text-2); }
.choice strong { color: var(--text); font-weight: 600; font-size: 17px; }