:root{--bg:#0b1020;--panel:#11182d;--text:#e7ecf7;--muted:#9ca8c4;--border:#2a3558;--accent:#6ea8fe;--danger:#ff7a7a;--accent2:#8ef0c9;--success:#6fe3a1;--warn:#ffd36e}
*{box-sizing:border-box}html,body{margin:0;padding:0;height:100%}
body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:linear-gradient(180deg,#0b1020,#0e1530);color:var(--text)}
button,input,textarea{font:inherit}button{border:1px solid var(--border);background:var(--accent);color:#061124;border-radius:12px;padding:10px 14px;cursor:pointer;font-weight:600}
button.secondary{background:transparent;color:var(--text)} button.danger{border-color:#6a3030;color:#ffd9d9}
button:disabled{opacity:.5;cursor:not-allowed}
input,textarea{width:100%;background:#0a1122;color:var(--text);border:1px solid var(--border);border-radius:12px;padding:12px 14px}
label{display:block;font-size:14px}.center-wrap{min-height:100vh;display:grid;place-items:center;padding:20px}
.card{width:min(100%,420px);background:rgba(17,24,45,.92);border:1px solid var(--border);border-radius:20px;padding:24px;box-shadow:0 30px 80px rgba(0,0,0,.35)}
.stack{display:grid;gap:14px}.muted{color:var(--muted)}.alert{background:#3a1f26;border:1px solid #723241;color:#ffd3db;border-radius:12px;padding:12px 14px;margin:14px 0}
.app-shell{display:grid;grid-template-columns:300px 1fr;min-height:100vh}.sidebar{border-right:1px solid var(--border);background:rgba(10,17,34,.75);backdrop-filter:blur(8px);padding:18px;display:flex;flex-direction:column;gap:16px}
.sidebar-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.conversation-list{display:flex;flex-direction:column;gap:8px;overflow:auto}
.conversation-item{width:100%;text-align:left;background:transparent;color:var(--text)}.conversation-item.active{background:rgba(110,168,254,.15);border-color:rgba(110,168,254,.45)}
.sidebar-note{border:1px solid var(--border);border-radius:14px;padding:12px 14px;background:rgba(17,24,45,.55)}
.chat-panel{display:grid;grid-template-rows:auto 1fr auto;min-height:100vh}.chat-header{padding:22px 24px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;gap:18px}
.header-actions{display:flex;gap:10px;flex-wrap:wrap}.messages{padding:24px;overflow:auto;display:flex;flex-direction:column;gap:16px}
.msg{max-width:min(900px,95%);border:1px solid var(--border);border-radius:18px;padding:14px 16px;line-height:1.6;white-space:pre-wrap}.msg.user{align-self:flex-end;background:rgba(110,168,254,.12)}.msg.assistant{align-self:flex-start;background:rgba(23,33,61,.75)}
.role{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);margin-bottom:6px}
.composer{padding:18px 24px;border-top:1px solid var(--border);background:rgba(10,17,34,.55)}.composer-form{max-width:960px}
.voice-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:10px}
.voice-press{background:linear-gradient(135deg,var(--accent),var(--accent2));min-width:220px}
.voice-conversation{min-width:160px}
.voice-press:active{transform:translateY(1px) scale(.99)}
.voice-badge{border:1px solid var(--border);background:rgba(110,168,254,.08);color:var(--muted);border-radius:999px;padding:8px 12px;font-size:13px}
.voice-badge.live{border-color:rgba(111,227,161,.55);background:rgba(111,227,161,.12);color:#dfffea}
.voice-badge.waiting{border-color:rgba(255,211,110,.55);background:rgba(255,211,110,.10);color:#fff1c7}
.composer-row{margin-top:12px;display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.composer-left,.composer-right{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.voice-options{row-gap:8px}.toggle{display:flex;align-items:center;gap:8px}.toggle input{width:auto}
.empty{color:var(--muted);border:1px dashed var(--border);border-radius:16px;padding:24px}.small{padding:14px}.tiny{font-size:12px;margin-top:10px}.logout-form{margin-top:auto}
@media (max-width:900px){.app-shell{grid-template-columns:1fr}.sidebar{min-height:auto;border-right:none;border-bottom:1px solid var(--border)}}