:root{
  --bg:#0f172a; --panel:#111827; --panel2:#182234; --text:#e5e7eb; --muted:#94a3b8; --accent:#22c55e; --accent2:#38bdf8; --bubbleMe:#2563eb; --bubbleThem:#1f2937;
  --radius:22px; --shadow:0 24px 80px rgba(0,0,0,.28);
}
*{box-sizing:border-box} body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,textarea,select{font:inherit} button{border:0;border-radius:16px;padding:12px 16px;background:var(--accent);color:#06130b;font-weight:800;cursor:pointer} button:hover{filter:brightness(1.06)} button.ghost,.secondary{background:var(--panel2);color:var(--text);border:1px solid rgba(255,255,255,.08)} input,textarea,select{width:100%;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);color:var(--text);border-radius:14px;padding:12px;outline:none} textarea{resize:none;max-height:160px}.muted{color:var(--muted)}.eyebrow{text-transform:uppercase;letter-spacing:.18em;color:var(--accent2);font-size:12px;font-weight:800}.hidden{display:none!important}.stack{display:grid;gap:12px}.full{width:100%;margin:8px 0}.icon-link{color:var(--text);text-decoration:none;background:rgba(255,255,255,.07);border-radius:14px;padding:10px 12px}.notice{background:rgba(56,189,248,.12);border:1px solid rgba(56,189,248,.25);padding:14px 16px;border-radius:18px;margin:16px 0}.notice.error{background:rgba(225,29,72,.12);border-color:rgba(225,29,72,.3)}
.auth-body{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at top left,rgba(34,197,94,.22),transparent 38%),var(--bg)}.auth-card{width:min(920px,92vw);background:rgba(17,24,39,.82);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.08);border-radius:32px;padding:32px;box-shadow:var(--shadow)}.brand-mark{width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,var(--accent),var(--accent2));display:grid;place-items:center;color:#06130b;font-weight:950;font-size:28px}.auth-card h1{font-size:44px;margin:14px 0 4px}.auth-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px}.auth-grid form{background:rgba(255,255,255,.04);padding:20px;border-radius:22px}
.app-shell{height:100vh;display:grid;grid-template-columns:360px 1fr}.sidebar{background:var(--panel);border-right:1px solid rgba(255,255,255,.08);padding:18px;overflow:auto}.topbar,.chat-header,.admin-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.topbar h1{margin:0;font-size:28px}.top-actions{display:flex;gap:8px}.section-title{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--muted);font-weight:900;margin:18px 0 8px}.chat-list{display:grid;gap:8px}.chat-item{padding:14px;border-radius:18px;background:rgba(255,255,255,.04);cursor:pointer;border:1px solid transparent}.chat-item:hover,.chat-item.active{background:var(--panel2);border-color:rgba(255,255,255,.08)}.chat-item strong{display:block}.chat-item small{color:var(--muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-panel{display:grid;grid-template-rows:auto 1fr auto;min-width:0}.chat-header{padding:18px 22px;background:rgba(255,255,255,.035);border-bottom:1px solid rgba(255,255,255,.08)}.chat-header h2{margin:0}.header-controls{display:flex;align-items:center;gap:12px}.toggle{white-space:nowrap;color:var(--muted);font-size:14px}.messages{padding:24px;overflow:auto;display:flex;flex-direction:column;gap:12px;background:radial-gradient(circle at bottom right,rgba(56,189,248,.1),transparent 35%),var(--bg)}.empty-state{align-items:center;justify-content:center;color:var(--muted)}.msg{max-width:min(680px,75%);display:grid;gap:6px}.msg.me{align-self:flex-end}.msg.them{align-self:flex-start}.bubble{padding:12px 14px;border-radius:20px;background:var(--bubbleThem);box-shadow:0 10px 24px rgba(0,0,0,.12);white-space:pre-wrap;line-height:1.42}.me .bubble{background:var(--bubbleMe);color:white;border-bottom-right-radius:7px}.them .bubble{border-bottom-left-radius:7px}.sender{font-size:12px;color:var(--muted);display:flex;gap:8px;align-items:center}.avatar{width:20px;height:20px;border-radius:50%;display:inline-block}.msg-tools{display:flex;gap:8px}.mini{font-size:12px;padding:6px 9px;border-radius:10px;background:rgba(255,255,255,.08);color:var(--text)} audio{max-width:280px;width:100%}.composer{display:grid;grid-template-columns:auto 1fr auto;gap:10px;padding:16px;background:var(--panel);border-top:1px solid rgba(255,255,255,.08)}#recordBtn.recording{background:#e11d48;color:white;animation:pulse 1s infinite}@keyframes pulse{50%{transform:scale(1.05)}}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.58);display:grid;place-items:center;padding:20px}.modal-card{width:min(680px,94vw);background:var(--panel);border:1px solid rgba(255,255,255,.1);border-radius:28px;padding:24px;position:relative;box-shadow:var(--shadow)}.close{position:absolute;right:14px;top:14px;background:rgba(255,255,255,.08);color:var(--text);border-radius:50%;width:42px;height:42px;padding:0}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.pill-list{display:flex;flex-wrap:wrap;gap:8px}.pill{display:flex;align-items:center;gap:6px;border:1px solid rgba(255,255,255,.1);background:rgba(255,255,255,.05);border-radius:999px;padding:8px 10px}.admin-body{min-height:100vh;background:var(--bg)}.admin-wrap{width:min(900px,92vw);margin:0 auto;padding:32px}.admin-card{background:var(--panel);border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:22px;margin:18px 0}code{background:rgba(255,255,255,.08);padding:2px 7px;border-radius:8px}
@media(max-width:820px){.app-shell{grid-template-columns:1fr}.sidebar{height:42vh;border-right:0;border-bottom:1px solid rgba(255,255,255,.08)}.auth-grid{grid-template-columns:1fr}.msg{max-width:92%}.header-controls{flex-direction:column;align-items:flex-end}.chat-header{align-items:flex-start}.auth-card h1{font-size:34px}}