:root {
  --bg: #0b1220;
  --bg-2: #10192b;
  --card: rgba(255,255,255,0.08);
  --card-2: rgba(255,255,255,0.06);
  --line: rgba(255,255,255,0.12);
  --text: #f5f7fb;
  --muted: #a8b3c8;
  --soft: #d6deee;
  --primary: #7c95ff;
  --primary-2: #a9b7ff;
  --danger: #ff6a6a;
  --success: #79dd9f;
  --warning: #ffd67c;
  --shadow: 0 16px 40px rgba(0,0,0,0.28);
  --radius: 22px;
  --radius-sm: 16px;
  --radius-xs: 12px;
  --maxw: 480px;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: linear-gradient(180deg, #0a1120, #0d1830 40%, #111d37 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
body {
  display: flex;
  justify-content: center;
}
img { max-width: 100%; display: block; }
button, input, textarea, audio {
  font: inherit;
}
button {
  border: 0;
  cursor: pointer;
  transition: transform .14s ease, opacity .14s ease, background .2s ease;
}
button:active { transform: scale(.98); }
textarea {
  width: 100%;
  min-height: 148px;
  resize: vertical;
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: rgba(6, 10, 19, 0.55);
  color: var(--text);
  outline: none;
  line-height: 1.45;
}
textarea::placeholder { color: #8f9ab0; }
input[type="file"] {
  width: 100%;
  color: var(--muted);
}
hr.sep {
  width: 100%;
  height: 1px;
  border: 0;
  background: var(--line);
}
#app {
  width: 100%;
  max-width: var(--maxw);
  min-height: 100dvh;
  position: relative;
  padding: env(safe-area-inset-top) 16px calc(94px + env(safe-area-inset-bottom)) 16px;
}
.screen { display: none; padding: 10px 0 28px; }
.screen.active { display: block; }
.hidden { display: none !important; }
.stack { display: grid; gap: 14px; }
.stack-sm { display: grid; gap: 10px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.row { display: flex; gap: 8px; align-items: center; }
.between { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.topbar, .subnav {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 16px;
}
.brand h1, .subnav h1, .topbar h1 {
  margin: 4px 0 0;
  font-size: 1.45rem;
  line-height: 1.08;
}
.eyebrow {
  margin: 0;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--primary-2);
  opacity: .95;
}
.center { text-align: center; }
.card {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.06));
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 16px;
  backdrop-filter: blur(14px);
}
.notice {
  border-color: rgba(124,149,255,0.28);
  background: linear-gradient(180deg, rgba(124,149,255,0.2), rgba(124,149,255,0.08));
}
.hero h2, .card h2, .card h3, .card strong {
  margin: 0;
}
.hero p { margin: 8px 0 12px; color: var(--soft); }
.badge, .pill, .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 8px 12px;
  background: rgba(124,149,255,0.16);
  border: 1px solid rgba(124,149,255,0.22);
  color: var(--soft);
  font-size: .88rem;
}
.chip.warn {
  background: rgba(255,214,124,.12);
  border-color: rgba(255,214,124,.22);
  color: #ffe7b0;
}
.chip.ok {
  background: rgba(121,221,159,.12);
  border-color: rgba(121,221,159,.22);
  color: #dff7e8;
}
.small { font-size: .88rem; }
.caption { margin: 2px 0 0; color: var(--muted); font-size: .88rem; }
.muted { margin: 0; color: var(--muted); }
.primary, .ghost, .danger, .back, .tab, .nav-btn, .feature, .toggle {
  border-radius: 16px;
}
.primary {
  background: linear-gradient(180deg, #8da3ff, #6e86ff);
  color: #0c1430;
  font-weight: 700;
  padding: 14px 16px;
}
.primary.small { padding: 10px 14px; font-size: .92rem; }
.ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--line);
  padding: 14px 16px;
}
.ghost.small { padding: 10px 12px; font-size: .9rem; }
.danger {
  background: rgba(255,106,106,.14);
  color: #ffd9d9;
  border: 1px solid rgba(255,106,106,.24);
  padding: 12px 14px;
}
.back {
  width: 44px;
  height: 44px;
  background: rgba(255,255,255,0.06);
  color: var(--text);
  border: 1px solid var(--line);
  flex: 0 0 auto;
}
.actions, .bottom-actions, .file-row {
  display: grid;
  gap: 10px;
}
.actions, .bottom-actions { grid-template-columns: 1fr 1fr; }
.file-row { grid-template-columns: 1fr; }
.bottom-actions .primary { justify-self: stretch; }
.stat {
  border-radius: var(--radius-sm);
  background: var(--card-2);
  border: 1px solid var(--line);
  padding: 14px;
}
.num {
  font-weight: 800;
  font-size: 1.55rem;
}
.lbl { color: var(--muted); font-size: .9rem; margin-top: 4px; }
.feature {
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 18px 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.09), rgba(255,255,255,0.04));
  color: var(--text);
  border: 1px solid var(--line);
}
.feature h3 { font-size: 1.05rem; margin-bottom: 4px; }
.feature p { margin: 0; color: var(--muted); }
.chev { font-size: 1.15rem; opacity: .8; }
.install-banner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.install-banner p { margin: 4px 0 0; }
.preview-img {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.04);
}
.splash {
  min-height: calc(100dvh - 120px);
  flex-direction: column;
  justify-content: center;
  align-items: center;
}
.splash.active {
  display: flex !important;
}
.logo {
  width: 84px;
  height: 84px;
  border-radius: 24px;
  background: linear-gradient(180deg, #8da3ff, #5f78ff);
  color: #081128;
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 1.55rem;
  box-shadow: 0 26px 50px rgba(79, 111, 255, 0.3);
  margin-bottom: 22px;
}
.splash h1 { margin: 8px 0; font-size: 2rem; }
.splash p { margin: 0; color: var(--soft); max-width: 300px; }
.progress {
  display: flex;
  gap: 8px;
  margin: 8px 0 16px;
}
.dot {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(255,255,255,.18);
}
.dot.on { background: var(--primary); }
.phone-preview {
  border-radius: 26px;
  background: rgba(6, 10, 18, 0.45);
  border: 1px solid var(--line);
  padding: 16px;
  min-height: 170px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  justify-content: center;
  margin: 10px 0 18px;
}
.bubble {
  max-width: 86%;
  border-radius: 18px;
  padding: 12px 14px;
  line-height: 1.35;
}
.bubble.in { background: rgba(255,255,255,0.1); }
.bubble.ai {
  background: rgba(124,149,255,0.18);
  border: 1px solid rgba(124,149,255,0.22);
  align-self: flex-end;
}
.tabbar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: rgba(255,255,255,.04);
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 4px;
}
.tab {
  color: var(--muted);
  background: transparent;
  padding: 11px 10px;
}
.tab.active {
  background: rgba(124,149,255,0.18);
  color: var(--text);
}
.result-header {
  display: grid;
  gap: 8px;
}
.result-title {
  font-size: 1.35rem;
  line-height: 1.15;
  margin: 0;
}
.metric-list, .chips, .reply-grid, .rewrite-tabs, .list {
  display: grid;
  gap: 10px;
}
.metric-list { gap: 12px; }
.metric-row {
  display: grid;
  gap: 6px;
}
.metric-row .label {
  display: flex;
  justify-content: space-between;
  color: var(--soft);
  font-size: .92rem;
}
.bar {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  overflow: hidden;
}
.fill {
  height: 100%;
  background: linear-gradient(90deg, #7893ff, #9fb2ff);
  border-radius: inherit;
}
.chips {
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
}
.reply-grid { grid-template-columns: 1fr; }
.reply-card, .history-card, .score-shell {
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.05);
  padding: 14px;
}
.history-card h3, .reply-card h4 { margin: 0 0 6px; }
.history-card p, .reply-card p { margin: 0; color: var(--muted); }
.score-wrap {
  display: flex;
  gap: 14px;
  align-items: center;
}
.score-ring {
  width: 92px;
  height: 92px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at center, rgba(12,20,48,0.86) 52%, transparent 53%), conic-gradient(#93a7ff var(--deg), rgba(255,255,255,0.1) 0);
  border: 1px solid rgba(255,255,255,.12);
  flex: 0 0 auto;
}
.score-ring .score-num {
  font-size: 1.6rem;
  font-weight: 800;
}
.score-ring .score-lbl {
  font-size: .76rem;
  color: var(--muted);
}
.issue-card {
  border-radius: 18px;
  padding: 14px;
  background: rgba(255,255,255,.05);
  border: 1px solid var(--line);
}
.rewrite-tabs {
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,.04);
  padding: 4px;
  border-radius: 18px;
  border: 1px solid var(--line);
}
.rewrite-tab {
  background: transparent;
  color: var(--muted);
  padding: 10px 8px;
  border-radius: 14px;
}
.rewrite-tab.active {
  background: rgba(124,149,255,0.18);
  color: var(--text);
}
.output-box {
  border-radius: 18px;
  padding: 14px;
  background: rgba(6,10,19,0.55);
  border: 1px solid var(--line);
  line-height: 1.5;
}
.switch {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}
.toggle {
  width: 58px;
  height: 34px;
  position: relative;
  background: rgba(255,255,255,.1);
  border: 1px solid var(--line);
}
.toggle::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  background: white;
  top: 4px;
  left: 4px;
  transition: left .18s ease;
}
.toggle.on { background: rgba(124,149,255,.35); }
.toggle.on::after { left: 28px; }
.bottom-nav {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(var(--maxw), 100%);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  background: linear-gradient(180deg, rgba(11,18,32,0), rgba(11,18,32,.92) 32%);
  backdrop-filter: blur(8px);
}
.nav-btn {
  padding: 13px 10px;
  background: rgba(255,255,255,.06);
  color: var(--muted);
  border: 1px solid var(--line);
}
.nav-btn.active {
  background: rgba(124,149,255,0.18);
  color: var(--text);
}
.list { gap: 12px; }
.history-card .meta {
  font-size: .82rem;
  color: var(--muted);
  margin-bottom: 8px;
}
.empty-state {
  text-align: center;
  color: var(--muted);
  padding: 18px;
}
.preview-share {
  aspect-ratio: 9/16;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: radial-gradient(circle at top, rgba(124,149,255,.22), rgba(11,18,32,.98) 60%);
  padding: 18px;
  display: grid;
  align-content: space-between;
}
.share-title { font-size: 1.6rem; font-weight: 800; line-height: 1.05; }
.share-footer { display: flex; justify-content: space-between; align-items: flex-end; }
.download-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
@media (max-width: 380px) {
  #app { padding-left: 12px; padding-right: 12px; }
  .actions, .bottom-actions, .download-row { grid-template-columns: 1fr; }
  .grid-2, .chips, .rewrite-tabs { grid-template-columns: 1fr; }
}

.badge.waiting { background: rgba(255,214,124,.12); border-color: rgba(255,214,124,.25); color: #ffe7b0; }
.badge.success { background: rgba(121,221,159,.12); border-color: rgba(121,221,159,.25); color: #dff7e8; }
.badge.warn { background: rgba(255,214,124,.12); border-color: rgba(255,214,124,.25); color: #ffe7b0; }
.badge.danger { background: rgba(255,106,106,.14); border-color: rgba(255,106,106,.24); color: #ffd9d9; }
.loading-card, .error-card { display:grid; place-items:center; text-align:center; min-height:140px; }
.spinner {
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 3px solid rgba(255,255,255,.14);
  border-top-color: var(--primary);
  animation: spin 1s linear infinite;
  margin-bottom: 8px;
}
@keyframes spin { to { transform: rotate(360deg);} }

.lang-picker select{background:rgba(255,255,255,0.08);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:10px 12px;min-width:120px;}
.lang-row{align-items:flex-start;gap:12px;}
.visually-hidden{position:absolute;left:-9999px;}
.result-kicker{display:block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--primary-2);margin-bottom:6px;}
.result-block{display:grid;gap:6px;}


#decodeResult, #sendResult { scroll-margin-top: 12px; }