:root{
  --ink:#0f1016;
  --ink-2:#17181f;
  --ink-3:#20212b;
  --ink-4:#292a35;
  --line:#2e2f3a;
  --ivory:#f2ede4;
  --ivory-dim:#9a9aa5;
  --copper:#d98e3f;
  --copper-bright:#f2ac5c;
  --teal:#4fd1ae;
  --red-soft:#e88b7d;
  --sidebar-w:264px;
}

*{box-sizing:border-box;}
html,body{height:100%;}
body{
  margin:0;
  background:var(--ink);
  color:var(--ivory);
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  overflow:hidden;
}

.app{position:relative;display:flex;height:100vh;height:100dvh;}

/* ── Sidebar ── */
.sidebar{
  width:var(--sidebar-w);flex-shrink:0;
  background:var(--ink-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;gap:18px;padding:16px 14px;
  transition:transform .25s ease;
}
.new-chat-btn{
  display:flex;align-items:center;gap:8px;
  padding:10px 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--ink-3);color:var(--ivory);font-size:.9rem;cursor:pointer;
}
.new-chat-btn:hover{background:var(--ink-4);}
.new-chat-btn svg{width:16px;height:16px;flex-shrink:0;}

.sidebar-brand{display:flex;align-items:center;gap:10px;padding:6px 4px;}
.brand-avatar{
  width:34px;height:34px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--copper),var(--copper-bright));
  color:var(--ink);font-weight:700;display:flex;align-items:center;justify-content:center;
}
.brand-name{font-size:.95rem;font-weight:700;color:var(--ivory);}
.brand-sub{font-size:.74rem;color:var(--ivory-dim);}

.sidebar-spacer{flex:1;}

.status-pill{
  display:inline-flex;align-items:center;gap:7px;align-self:flex-start;
  padding:6px 12px;border-radius:999px;background:var(--ink-3);
  font-size:.76rem;color:var(--ivory-dim);
}
.dot{width:7px;height:7px;border-radius:50%;background:var(--ivory-dim);transition:background .2s;}
.dot.live{background:var(--teal);box-shadow:0 0 6px var(--teal);}

.sidebar-toggle{
  display:none;position:absolute;top:14px;left:14px;z-index:20;
  width:38px;height:38px;border-radius:10px;border:1px solid var(--line);
  background:var(--ink-2);color:var(--ivory);align-items:center;justify-content:center;cursor:pointer;
}
.sidebar-toggle svg{width:18px;height:18px;}
.sidebar-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:15;}

/* ── Main ── */
.main{flex:1;min-width:0;display:flex;flex-direction:column;position:relative;background:var(--ink);}

.empty-state{
  flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:24px;text-align:center;
}
.empty-avatar{
  width:56px;height:56px;border-radius:50%;
  background:linear-gradient(135deg,var(--copper),var(--copper-bright));
  color:var(--ink);font-weight:700;font-size:1.4rem;
  display:flex;align-items:center;justify-content:center;
}
.empty-state h1{margin:0;font-size:1.6rem;font-weight:600;color:var(--ivory);}
.empty-sub{margin:0;max-width:420px;color:var(--ivory-dim);font-size:.92rem;line-height:1.5;}

/* ── Chat log ── */
.chat-log{
  flex:1;overflow-y:auto;padding:24px 18px 12px;display:flex;flex-direction:column;gap:12px;
  max-width:820px;width:100%;margin:0 auto;
}
.msg{
  max-width:74%;padding:10px 14px;border-radius:14px;font-size:.94rem;line-height:1.45;
  white-space:pre-wrap;word-wrap:break-word;
}
.msg.user{align-self:flex-end;background:var(--copper);color:var(--ink);border-bottom-right-radius:4px;}
.msg.assistant{align-self:flex-start;background:var(--ink-3);color:var(--ivory);border-bottom-left-radius:4px;}
.msg.pending{opacity:.65;font-style:italic;}
.msg-meta{display:block;font-size:.68rem;opacity:.6;margin-top:4px;}

/* ── Composer (Qwen-style pill) ── */
.composer-wrap{padding:14px 18px 20px;}
.composer{max-width:760px;width:100%;margin:0 auto;}
.composer-pill{
  display:flex;align-items:center;gap:6px;
  background:var(--ink-3);border:1px solid var(--line);border-radius:26px;
  padding:6px 8px 6px 16px;
}
.composer-input{
  flex:1;background:transparent;border:none;color:var(--ivory);font-size:.95rem;
  padding:10px 4px;min-width:0;
}
.composer-input:focus{outline:none;}
.composer-input::placeholder{color:var(--ivory-dim);}
.composer-icon{
  width:38px;height:38px;border-radius:50%;border:none;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  background:var(--ink-4);color:var(--ivory-dim);
}
.composer-icon svg{width:18px;height:18px;}
.composer-icon-static{cursor:default;opacity:.55;}
.composer-voice-btn{background:var(--ivory);color:var(--ink);}
.composer-voice-btn:hover{background:var(--copper-bright);}

/* ── Voice menu popover ── */
.voice-menu{
  position:fixed;z-index:30;bottom:88px;right:26px;
  background:var(--ink-3);border:1px solid var(--line);border-radius:14px;
  padding:6px;box-shadow:0 10px 30px rgba(0,0,0,.4);
}
.voice-menu-item{
  display:flex;align-items:center;gap:10px;width:100%;white-space:nowrap;
  padding:10px 16px;border:none;background:transparent;color:var(--ivory);
  font-size:.9rem;border-radius:9px;cursor:pointer;text-align:left;
}
.voice-menu-item:hover{background:var(--ink-4);}
.voice-menu-item svg{width:16px;height:16px;flex-shrink:0;}

/* ── Fullscreen call overlay ── */
.call-overlay{
  position:fixed;inset:0;z-index:40;background:var(--ink);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;
}
.call-timer{
  position:absolute;top:26px;left:50%;transform:translateX(-50%);
  background:var(--ink-3);border:1px solid var(--line);border-radius:999px;
  padding:6px 16px;font-size:.85rem;color:var(--ivory-dim);font-variant-numeric:tabular-nums;
}
.call-orb-wrap{display:flex;align-items:center;justify-content:center;}
.call-orb{
  width:180px;height:180px;border-radius:50%;
  background:radial-gradient(circle at 35% 30%, var(--copper-bright), var(--copper) 55%, #7a4d1f 100%);
  box-shadow:0 0 60px rgba(217,142,63,.35);
  animation:orb-idle 3.4s ease-in-out infinite;
}
.call-orb.listening{
  background:radial-gradient(circle at 35% 30%, #eaf9f3, var(--teal) 55%, #1f5f4f 100%);
  box-shadow:0 0 70px rgba(79,209,174,.4);
  animation:orb-listening 1.8s ease-in-out infinite;
}
.call-orb.speaking{
  animation:orb-speaking 1s ease-in-out infinite;
}
@keyframes orb-idle{
  0%,100%{transform:scale(1);}
  50%{transform:scale(1.03);}
}
@keyframes orb-listening{
  0%,100%{transform:scale(1);}
  50%{transform:scale(1.08);}
}
@keyframes orb-speaking{
  0%,100%{transform:scale(1);}
  25%{transform:scale(1.06);}
  50%{transform:scale(0.98);}
  75%{transform:scale(1.1);}
}
.call-status{font-size:1rem;color:var(--ivory);opacity:.9;}
.call-transcript{
  max-width:560px;min-height:1.4em;padding:0 20px;text-align:center;
  color:var(--ivory-dim);font-size:.9rem;
}
.call-controls{position:absolute;bottom:48px;display:flex;gap:22px;}
.call-btn{
  width:56px;height:56px;border-radius:50%;border:none;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
}
.call-btn svg{width:22px;height:22px;}
.call-btn.end{background:var(--red-soft);color:var(--ink);}
.call-btn.end:hover{filter:brightness(1.08);}
.call-btn.mute{background:var(--ink-3);border:1px solid var(--line);color:var(--ivory);}
.call-btn.mute.active{background:var(--copper);color:var(--ink);}

/* ── Responsive ── */
@media (max-width:820px){
  .sidebar{
    position:fixed;inset:0 auto 0 0;z-index:20;transform:translateX(-100%);
  }
  .sidebar.open{transform:translateX(0);}
  .sidebar-toggle{display:flex;}
  .empty-state{padding-top:60px;}
  .call-orb{width:140px;height:140px;}
}
@media (min-width:821px){
  .sidebar-overlay{display:none !important;}
}