:root{
  --bg:#0d1324; --panel:#141c31; --panel2:#19243d; --text:#f4f7fb; --muted:#aab6cf;
  --line:#2a3859; --brand:#66e3ff; --brand2:#8cf5bf; --danger:#ff6b6b; --warn:#ffd166;
  --shadow:0 18px 50px rgba(0,0,0,.30); --radius:22px;
}
*{box-sizing:border-box} body{margin:0;background:radial-gradient(circle at top left,#1a3157 0,#0d1324 35%,#090d18 100%);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;min-height:100vh} a{color:var(--brand)}
button,input,select,textarea{font:inherit} button{border:0;border-radius:16px;padding:12px 16px;font-weight:800;cursor:pointer;color:#071019} button:disabled{opacity:.55;cursor:not-allowed}.primary{background:linear-gradient(135deg,var(--brand),var(--brand2))}.secondary{background:#e8eefc}.danger{background:var(--danger);color:white}.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}.icon{width:44px;height:44px;padding:0}.big{font-size:18px;padding:16px 20px}.mic{background:linear-gradient(135deg,#ffd166,#ff9f1c)}
input,select,textarea{width:100%;border:1px solid var(--line);background:#0b1020;color:var(--text);border-radius:14px;padding:12px 13px;outline:none} textarea{resize:vertical}.muted{color:var(--muted)}.hint{font-size:13px;color:var(--muted);margin-top:12px}.hidden{display:none!important}.alert{padding:12px;border-radius:14px;margin:14px 0}.error{background:rgba(255,107,107,.14);border:1px solid rgba(255,107,107,.5)}
.login-body{display:grid;place-items:center;padding:20px}.login-card{width:min(460px,100%);background:rgba(20,28,49,.86);backdrop-filter:blur(12px);border:1px solid var(--line);border-radius:28px;padding:28px;box-shadow:var(--shadow)}.brand-mark{width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,var(--brand),var(--brand2));display:grid;place-items:center;color:#071019;font-weight:900;font-size:22px}.stack{display:grid;gap:10px;margin-top:22px}
.topbar{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;gap:14px;align-items:center;padding:16px clamp(14px,3vw,34px);background:rgba(9,13,24,.78);backdrop-filter:blur(16px);border-bottom:1px solid rgba(42,56,89,.7)}.logo-line{display:flex;align-items:center;gap:9px}.brand-dot{width:14px;height:14px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2));box-shadow:0 0 20px var(--brand)}.usage-pill{border:1px solid var(--line);background:rgba(20,28,49,.8);padding:10px 12px;border-radius:999px;color:var(--brand2);white-space:nowrap}.demo-banner{margin:14px clamp(14px,3vw,34px);padding:12px 14px;border:1px solid rgba(255,209,102,.4);background:rgba(255,209,102,.12);border-radius:16px;color:#ffe8a6}.tabs{display:flex;gap:8px;overflow:auto;padding:10px clamp(14px,3vw,34px)}.tab{background:rgba(20,28,49,.85);color:var(--text);border:1px solid var(--line);white-space:nowrap}.tab.active{background:linear-gradient(135deg,rgba(102,227,255,.22),rgba(140,245,191,.18));border-color:var(--brand)}.app-shell{padding:0 clamp(14px,3vw,34px) 36px}.panel{display:none;background:rgba(20,28,49,.82);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}.panel.active{display:block}.panel-head{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.panel h2,.panel h3{margin:.2rem 0}.lang-row{display:grid;grid-template-columns:1fr auto 1fr 1fr;gap:10px;align-items:end;margin:16px 0}.lang-row.compact{grid-template-columns:1fr auto 1fr}.messages{height:min(58vh,620px);min-height:320px;overflow:auto;padding:14px;background:#0b1020;border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;gap:12px}.msg{max-width:min(76%,650px);padding:12px 14px;border-radius:18px;border:1px solid var(--line);background:var(--panel2)}.msg.mine{align-self:flex-end;background:linear-gradient(135deg,rgba(102,227,255,.18),rgba(140,245,191,.12));border-color:rgba(102,227,255,.35)}.msg .meta{font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;margin-bottom:6px}.msg .src{color:var(--muted);font-size:13px;border-top:1px solid rgba(255,255,255,.08);margin-top:8px;padding-top:8px}.msg audio{width:100%;margin-top:8px}.msg img{max-width:100%;border-radius:12px;margin-top:8px}.composer{margin-top:14px;display:grid;gap:10px}.composer-actions{display:flex;flex-wrap:wrap;gap:8px}.preview{border:1px solid var(--line);border-radius:16px;background:#0b1020;padding:12px;white-space:pre-wrap}.typing{color:var(--brand2);font-size:13px}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.card{background:#0b1020;border:1px solid var(--line);border-radius:18px;padding:16px}.travel-controls{display:flex;gap:10px;margin:14px 0}.live-meter{display:flex;align-items:center;gap:9px;color:var(--muted)}#liveDot{width:12px;height:12px;border-radius:50%;background:#56617b}.listening #liveDot{background:var(--danger);box-shadow:0 0 18px var(--danger)}.quick-grid{display:grid;grid-template-columns:1fr;gap:8px}.quick{background:#19243d;color:var(--text);border:1px solid var(--line);text-align:left}.travel-log{display:grid;gap:10px;margin-top:14px}.travel-item{background:#0b1020;border:1px solid var(--line);border-radius:16px;padding:12px}.travel-item strong{color:var(--brand2)}
.admin-shell{padding:18px clamp(14px,3vw,34px) 40px}.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:14px}.kpi{background:rgba(20,28,49,.86);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--shadow)}.kpi span{font-size:30px;font-weight:900;color:var(--brand2);display:block}.kpi small{color:var(--muted)}.admin-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.admin-card{background:rgba(20,28,49,.86);border:1px solid var(--line);border-radius:18px;padding:18px}.admin-card.wide{grid-column:1/-1}.table-wrap{overflow:auto}.admin-card table{width:100%;border-collapse:collapse;font-size:13px}.admin-card th,.admin-card td{border-bottom:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}.inline-form{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.check{display:flex;gap:8px;align-items:center;margin:10px 0}.check input{width:auto}.code{background:#0b1020;border:1px solid var(--line);border-radius:12px;padding:12px;overflow:auto;color:#d6f6ff}
@media(max-width:900px){.card-grid,.admin-grid,.kpi-grid{grid-template-columns:1fr}.inline-form{grid-template-columns:1fr}.lang-row,.lang-row.compact{grid-template-columns:1fr 44px 1fr}.lang-row label:last-child{grid-column:1/-1}.panel{padding:14px}.messages{height:50vh}.msg{max-width:92%}.topbar{align-items:flex-start}.usage-pill{font-size:13px}.composer-actions button{flex:1 1 150px}}

/* Learning / pronunciation helper */
.learning{
  margin-top:10px;
  padding:10px 12px;
  border:1px solid rgba(255,255,255,.14);
  border-radius:14px;
  background:rgba(255,255,255,.06);
  font-size:.92rem;
}
.learning summary{
  cursor:pointer;
  font-weight:700;
  margin-bottom:6px;
}
.learning div{margin-top:7px; line-height:1.35;}
.translated-main{font-size:1.05rem; line-height:1.45;}
.link-button{display:inline-block;text-align:center;text-decoration:none;margin-top:8px;}
.admin-login-card .brand-mark{background:linear-gradient(135deg,#222,#666);}

/* V3 account / pricing / developer panels */
.account-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:14px;margin:16px 0}.plans-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.plan-card{background:#0b1020;border:1px solid var(--line);border-radius:18px;padding:16px;display:grid;gap:8px}.plan-card h3{margin:0}.price{font-size:28px;font-weight:900;color:var(--brand2)}.price small{font-size:13px;color:var(--muted);font-weight:600}.highlight-card{border-color:rgba(102,227,255,.45);background:linear-gradient(135deg,rgba(102,227,255,.10),rgba(140,245,191,.06))}.plan-name{font-size:28px;font-weight:900;color:var(--brand2);margin:8px 0}.mini-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}.mini-stats span{background:rgba(0,0,0,.22);border:1px solid var(--line);border-radius:14px;padding:10px}.mini-stats strong{display:block;font-size:24px;color:var(--brand)}.mini-stats small{color:var(--muted)}.section-title{margin-top:20px}.kpi-grid.six{grid-template-columns:repeat(6,minmax(0,1fr))}.admin-tabs{padding-left:0;padding-right:0}.admin-panel{margin-top:0}.six-cols{grid-template-columns:repeat(6,minmax(0,1fr))}.plan-form{grid-template-columns:repeat(4,minmax(0,1fr))}.plan-form textarea{grid-column:1/-2}.check.small{font-size:13px;margin:0;align-self:center}.admin-card label{display:block;margin:10px 0;color:var(--muted)}.admin-card label input,.admin-card label textarea,.admin-card label select{margin-top:6px}.admin-card ul{line-height:1.55}@media(max-width:1100px){.kpi-grid.six{grid-template-columns:repeat(2,minmax(0,1fr))}.plans-grid{grid-template-columns:1fr 1fr}.account-grid{grid-template-columns:1fr}.plan-form{grid-template-columns:1fr}.plan-form textarea{grid-column:auto}.six-cols{grid-template-columns:1fr}}@media(max-width:650px){.plans-grid{grid-template-columns:1fr}.mini-stats{grid-template-columns:1fr}.kpi-grid.six{grid-template-columns:1fr}}