:root, [data-theme="dark"]{
  --bg-1:#0a0f1e;
  --bg-2:#0f1a2e;
  --bg-3:#0b1220;
  --panel:rgba(23,32,48,.72);
  --panel-solid:#141e2e;
  --panel-hover:rgba(35,47,68,.9);
  --panel-active:rgba(46,169,201,.16);
  --bubble-in:rgba(31,44,63,.92);
  --bubble-out-1:#2ea9c9;
  --bubble-out-2:#1b7f9e;
  --bubble-out-text:#ffffff;
  --text:#eaf1f7;
  --muted:#8a9bb0;
  --faint:#5a6b80;
  --accent:#2ea9c9;
  --accent-2:#46d6f3;
  --accent-dark:#1f88a5;
  --accent-contrast:#03141b;
  --green:#4cd28a;
  --divider:rgba(255,255,255,.06);
  --ring:rgba(46,169,201,.35);
  --shadow-lg:0 20px 60px rgba(0,0,0,.45);
  --shadow-md:0 8px 28px rgba(0,0,0,.35);
  --shadow-sm:0 2px 10px rgba(0,0,0,.25);
  --glow-a:rgba(46,169,201,.14);
  --glow-b:rgba(120,90,220,.12);
  --scroll:rgba(255,255,255,.08);
  --field-bg:rgba(255,255,255,.045);
  --field-bg-focus:rgba(255,255,255,.07);
  --button-text:#03141b;
}
[data-theme="light"]{
  --bg-1:#eef2f7;
  --bg-2:#e2e8f0;
  --bg-3:#f6f8fb;
  --panel:rgba(255,255,255,.78);
  --panel-solid:#ffffff;
  --panel-hover:rgba(0,0,0,.05);
  --panel-active:rgba(45,110,220,.12);
  --bubble-in:#ffffff;
  --bubble-out-1:#3a7bf0;
  --bubble-out-2:#2558c9;
  --bubble-out-text:#ffffff;
  --text:#0e1a2b;
  --muted:#5b6b82;
  --faint:#8a99ad;
  --accent:#2563eb;
  --accent-2:#3b82f6;
  --accent-dark:#1d4ed8;
  --accent-contrast:#ffffff;
  --green:#16a34a;
  --divider:rgba(0,0,0,.08);
  --ring:rgba(37,99,235,.3);
  --shadow-lg:0 20px 60px rgba(20,40,80,.15);
  --shadow-md:0 8px 28px rgba(20,40,80,.12);
  --shadow-sm:0 2px 10px rgba(20,40,80,.08);
  --glow-a:rgba(59,130,246,.12);
  --glow-b:rgba(139,92,246,.10);
  --scroll:rgba(0,0,0,.12);
  --field-bg:rgba(0,0,0,.04);
  --field-bg-focus:rgba(0,0,0,.06);
  --button-text:#ffffff;
}
[data-theme="ocean"]{
  --bg-1:#04141f;
  --bg-2:#062434;
  --bg-3:#03101a;
  --panel:rgba(10,42,60,.72);
  --panel-solid:#0a2a3c;
  --panel-hover:rgba(16,64,88,.9);
  --panel-active:rgba(6,182,212,.2);
  --bubble-in:rgba(14,52,72,.92);
  --bubble-out-1:#06b6d4;
  --bubble-out-2:#0e7490;
  --bubble-out-text:#ffffff;
  --text:#e0f6ff;
  --muted:#7ea9be;
  --faint:#4d7386;
  --accent:#06b6d4;
  --accent-2:#22d3ee;
  --accent-dark:#0e7490;
  --accent-contrast:#001018;
  --green:#34d399;
  --divider:rgba(120,220,255,.10);
  --ring:rgba(6,182,212,.4);
  --shadow-lg:0 20px 60px rgba(0,0,0,.55);
  --shadow-md:0 8px 28px rgba(0,0,0,.4);
  --shadow-sm:0 2px 10px rgba(0,0,0,.3);
  --glow-a:rgba(6,182,212,.18);
  --glow-b:rgba(20,120,180,.16);
  --scroll:rgba(120,220,255,.14);
  --field-bg:rgba(120,220,255,.06);
  --field-bg-focus:rgba(120,220,255,.1);
  --button-text:#001018;
}
[data-theme="forest"]{
  --bg-1:#0a1510;
  --bg-2:#0f2418;
  --bg-3:#0a1a12;
  --panel:rgba(16,36,26,.74);
  --panel-solid:#10241a;
  --panel-hover:rgba(26,52,38,.9);
  --panel-active:rgba(34,197,94,.18);
  --bubble-in:rgba(22,44,32,.92);
  --bubble-out-1:#22c55e;
  --bubble-out-2:#15803d;
  --bubble-out-text:#ffffff;
  --text:#e7f6ec;
  --muted:#88a894;
  --faint:#5a7566;
  --accent:#22c55e;
  --accent-2:#4ade80;
  --accent-dark:#15803d;
  --accent-contrast:#03140a;
  --green:#4ade80;
  --divider:rgba(150,255,190,.08);
  --ring:rgba(34,197,94,.35);
  --shadow-lg:0 20px 60px rgba(0,0,0,.5);
  --shadow-md:0 8px 28px rgba(0,0,0,.35);
  --shadow-sm:0 2px 10px rgba(0,0,0,.25);
  --glow-a:rgba(34,197,94,.15);
  --glow-b:rgba(80,160,90,.14);
  --scroll:rgba(150,255,190,.1);
  --field-bg:rgba(150,255,190,.05);
  --field-bg-focus:rgba(150,255,190,.1);
  --button-text:#03140a;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);
  font-size:14px;
  overflow:hidden;
  background:
    radial-gradient(1200px 800px at 10% -10%, var(--glow-a), transparent 60%),
    radial-gradient(1000px 700px at 110% 110%, var(--glow-b), transparent 55%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2) 60%, var(--bg-3));
  transition:none;
  -webkit-tap-highlight-color:transparent;
}
button{font-family:inherit;color:inherit}

/* ============ Landing ============ */
.landing{
  position:fixed;inset:0;
  display:flex;align-items:flex-start;justify-content:center;
  padding:24px;
  z-index:5;
  overflow-y:auto;
  -webkit-overflow-scrolling:touch;
}
.landing::before{
  content:"";
  position:fixed;inset:0;
  backdrop-filter:blur(18px) saturate(140%);
  -webkit-backdrop-filter:blur(18px) saturate(140%);
  background:rgba(6,12,22,.35);
  z-index:-1;
  pointer-events:none;
}
.landing-card{
  width:100%;max-width:520px;
  background:var(--panel-solid);
  border:1px solid var(--divider);
  border-radius:24px;
  box-shadow:var(--shadow-lg);
  padding:44px 36px;
  text-align:center;
  position:relative;
  z-index:1;
  margin:0 auto;
  animation:landingIn .35s ease;
}
@keyframes landingIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.landing-logo{margin:0 auto 16px;width:64px;height:64px}
.landing-logo img{display:block;width:100%;height:100%}
.landing h1{font-size:28px;letter-spacing:-.4px;margin-bottom:6px}
.landing-tag{color:var(--muted);font-size:14px;margin-bottom:28px}
.landing-links{display:flex;flex-direction:column;gap:10px;margin-bottom:26px;text-align:left}
.landing-link{
  display:flex;align-items:center;gap:14px;
  padding:14px 16px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:14px;
  text-decoration:none;
  color:var(--text);
  transition:background .15s, border-color .15s, transform .1s;
}
.landing-link:hover{
  background:var(--field-bg-focus);
  border-color:var(--ring);
  transform:translateY(-1px);
}
.lk-icon{
  width:38px;height:38px;border-radius:12px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  color:var(--button-text);
  flex-shrink:0;
}
.lk-text{flex:1;min-width:0}
.lk-text strong{display:block;font-size:14px;font-weight:600}
.lk-text em{display:block;font-style:normal;font-size:12px;color:var(--muted);margin-top:2px}
.lk-arrow{color:var(--muted);font-size:16px}
.landing-link:hover .lk-arrow{color:var(--accent-2)}
.landing-enter{
  width:100%;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  color:var(--button-text);border:none;
  padding:14px 20px;border-radius:14px;
  font-size:14px;font-weight:700;
  cursor:pointer;
  box-shadow:0 10px 26px var(--ring);
  transition:filter .15s, transform .1s;
}
.landing-enter:hover{filter:brightness(1.08)}
.landing-enter:active{transform:translateY(1px)}
.landing-foot{margin-top:20px;color:var(--faint);font-size:11.5px;line-height:1.5}

/* ============ App shell ============ */
#app{
  display:flex;
  height:100vh;
  width:100vw;
  padding:14px;
  gap:14px;
}

/* ============ Sidebar ============ */
#sidebar{
  width:360px;min-width:300px;
  display:flex;flex-direction:column;
  background:var(--panel);
  
  border:1px solid var(--divider);
  border-radius:20px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;position:relative;
}
@media (min-width:861px){
   #sidebar{
      backdrop-filter:blur(24px) saturate(140%);
      -webkit-backdrop-filter:blur(24px) saturate(140%);
   }
}


.sidebar-top{
  display:flex;align-items:center;gap:10px;
  padding:16px 18px 14px;
  border-bottom:1px solid var(--divider);
}
.brand{display:flex;align-items:center;gap:11px;flex:1;min-width:0}
.brand-mark{
  width:34px;height:34px;border-radius:11px;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  display:grid;place-items:center;
  font-weight:700;color:var(--button-text);font-size:13px;
  box-shadow:0 6px 18px var(--ring);
  flex-shrink:0;
}
.brand-name{
  font-size:15px;font-weight:600;letter-spacing:.2px;
  background:linear-gradient(90deg,var(--text),var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
  min-width:0;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}

.icon-btn{
  background:transparent;border:none;color:var(--muted);
  width:36px;height:36px;border-radius:12px;cursor:pointer;
  display:grid;place-items:center;font-size:15px;
  transition:background .15s,color .15s,transform .12s;
  flex-shrink:0;
}
.icon-btn:hover{background:var(--panel-hover);color:var(--text)}
.icon-btn:active{transform:scale(.94)}

/* ============ App menu ============ */
.app-menu{
  display:none;position:absolute;top:64px;right:16px;left:16px;
  background:var(--panel-solid);
  border:1px solid var(--divider);
  border-radius:14px;
  z-index:80;overflow:hidden;
  box-shadow:var(--shadow-lg);
  max-height:calc(100vh - 90px);
  overflow-y:auto;
}
.app-menu.open{display:block;animation:pop .14s ease}
@keyframes pop{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}
.app-menu-item{
  display:flex;align-items:center;gap:10px;
  width:100%;text-align:left;
  background:transparent;border:none;
  padding:11px 16px;color:var(--text);font-size:13.5px;cursor:pointer;
  text-decoration:none;
  transition:background .12s;
}
.app-menu-item:hover{background:var(--panel-hover)}
.app-menu-item svg{color:var(--muted);flex-shrink:0}
.app-menu-item:hover svg{color:var(--accent-2)}
.app-menu-sep{height:1px;background:var(--divider);margin:4px 0}
.app-menu-section{padding:10px 16px 6px;font-size:11px;color:var(--faint);text-transform:uppercase;letter-spacing:.8px;font-weight:600}

/* ============ Theme swatches ============ */
.theme-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:6px;
  padding:0 12px 10px;
}
.theme-swatch{
  display:flex;align-items:center;gap:8px;
  padding:8px 10px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:10px;
  color:var(--text);
  font-size:12.5px;cursor:pointer;
  transition:background .15s, border-color .15s;
  font-family:inherit;
  text-align:left;
}
.theme-swatch:hover{background:var(--field-bg-focus)}
.theme-swatch.active{border-color:var(--accent-2);box-shadow:0 0 0 2px var(--ring)}

.theme-dot{
  width:16px;height:16px;border-radius:5px;flex-shrink:0;
  box-sizing:border-box;
  border:1px solid rgba(0,0,0,.3);
  display:block;
}
.theme-swatch[data-swatch="dark"] .theme-dot{
  background:#0f1a2e;
  border-color:rgba(255,255,255,.4);
}
.theme-swatch[data-swatch="light"] .theme-dot{
  background:#ffffff;
  border-color:rgba(0,0,0,.5);
}
.theme-swatch[data-swatch="ocean"] .theme-dot{
  background:#06b6d4;
  border-color:rgba(0,0,0,.3);
}
.theme-swatch[data-swatch="forest"] .theme-dot{
  background:#22c55e;
  border-color:rgba(0,0,0,.3);
}

/* ============ Search + buttons ============ */
.search-wrap{position:relative;margin:14px 16px 10px}
.search-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--faint);pointer-events:none;
  display:grid;place-items:center;
}
.search{
  width:100%;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:999px;
  padding:11px 16px 11px 40px;
  color:var(--text);font-size:13px;outline:none;
  transition:border-color .15s, background .15s, box-shadow .15s;
}
.search::placeholder{color:var(--faint)}
.search:focus{
  border-color:var(--ring);
  background:var(--field-bg-focus);
  box-shadow:0 0 0 4px var(--ring);
}

.load-actions{display:flex;gap:8px;padding:0 16px 12px}
.btn{
  flex:1;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  color:var(--button-text);border:none;
  padding:10px 12px;border-radius:12px;
  font-size:12.5px;font-weight:600;
  cursor:pointer;
  transition:filter .15s, transform .1s, box-shadow .15s;
  box-shadow:0 8px 20px var(--ring);
  font-family:inherit;
}
.btn:hover{filter:brightness(1.08)}
.btn:active{transform:translateY(1px)}
.btn-outline{
  background:transparent;
  color:var(--accent-2);
  border:1px solid var(--ring);
  box-shadow:none;
}
.btn-outline:hover{background:var(--panel-active)}

.status{
  font-size:11.5px;color:var(--faint);
  padding:0 18px 12px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  border-bottom:1px solid var(--divider);
}

/* ============ Chat list ============ */
.chat-list{
  flex:1;overflow-y:auto;overflow-x:hidden;
  padding:6px 8px 8px;
}
.chat-list::-webkit-scrollbar{width:6px}
.chat-list::-webkit-scrollbar-thumb{background:var(--scroll);border-radius:3px}

.chat-item{
  display:flex;gap:12px;
  padding:10px 10px;
  cursor:pointer;
  border-radius:14px;
  user-select:none;
  transition:background .12s, transform .08s;
  margin-bottom:2px;
}
.chat-item:hover{background:var(--panel-hover)}
.chat-item:active{transform:scale(.995)}
.chat-item.active{
  background:var(--panel-active);
  box-shadow:inset 0 0 0 1px var(--ring);
}

.avatar{
  border-radius:50%;flex-shrink:0;
  display:grid;place-items:center;
  font-weight:600;color:#fff;overflow:hidden;
  box-shadow:var(--shadow-sm);
}
.avatar-sm{width:46px;height:46px;font-size:16px}
.avatar-xl{width:112px;height:112px;font-size:46px}
.avatar img{width:100%;height:100%;object-fit:cover;border-radius:50%}

.chat-meta{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center}
.chat-title{
  font-size:14px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.chat-preview{
  font-size:12.5px;color:var(--muted);margin-top:3px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.chat-item.active .chat-title{color:var(--text)}
.chat-item.active .chat-preview{color:var(--accent-2)}

/* ============ My profile card ============ */
.my-profile-card{
  display:flex;align-items:center;gap:10px;
  margin:8px 10px 12px;
  padding:10px 12px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:14px;
  cursor:pointer;
  transition:background .15s, border-color .15s;
}
.my-profile-card:hover{
  background:var(--field-bg-focus);
  border-color:var(--ring);
}
.my-profile-card .avatar-sm{width:38px;height:38px;font-size:14px}
.my-meta{flex:1;min-width:0}
.my-name{
  font-size:13.5px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.my-status{
  display:flex;align-items:center;gap:6px;
  font-size:11.5px;color:var(--muted);margin-top:2px;
}
.dot{
  width:7px;height:7px;border-radius:50%;background:var(--green);
  box-shadow:0 0 8px var(--green);
}

/* ============ Chat pane ============ */
.chat-pane{
  flex:1;display:flex;flex-direction:column;
  background:var(--panel);
  
  border:1px solid var(--divider);
  border-radius:20px;
  box-shadow:var(--shadow-lg);
  overflow:hidden;min-width:0;position:relative;
}
.chat-pane.empty::after{
  content:"Select a chat to start reading";
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  color:var(--muted);font-size:13px;
  padding:10px 18px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:999px;
  pointer-events:none;
}

.chat-header{
  display:flex;align-items:center;gap:12px;
  padding:12px 16px;
  border-bottom:1px solid var(--divider);
  flex-shrink:0;cursor:pointer;
}
.chat-header .avatar-sm{width:40px;height:40px;font-size:14px}
.chat-header-meta{flex:1;min-width:0}
.chat-title-main{font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.chat-subtitle{font-size:12px;color:var(--muted);margin-top:2px}
.chat-header-actions{display:flex;gap:2px;flex-shrink:0}

.back-btn{display:none}

.chat-search-bar{
  display:flex;gap:8px;
  padding:10px 16px;
  border-bottom:1px solid var(--divider);
  align-items:center;
}
.chat-search-bar .search{flex:1;padding:9px 16px}

/* ============ Messages ============ */
.messages{
  flex:1;overflow-y:auto;
  padding:22px 28px;
  display:flex;flex-direction:column;gap:4px;
  scroll-behavior:smooth;
  -webkit-overflow-scrolling:touch;
}
.messages::-webkit-scrollbar{width:6px}
.messages::-webkit-scrollbar-thumb{background:var(--scroll);border-radius:3px}

.date-sep{
  align-self:center;
  color:var(--faint);font-size:11.5px;
  padding:4px 14px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:999px;
  margin:16px 0 10px;
}

.bubble-row{display:flex;margin-top:2px}
.bubble-row.out{justify-content:flex-end}
.bubble-row.first-in-group{margin-top:14px}

.bubble{
  max-width:min(70%,620px);
  padding:10px 14px 8px;
  border-radius:18px;
  position:relative;
  word-wrap:break-word;line-height:1.5;font-size:14px;
  box-shadow:var(--shadow-sm);
  white-space:pre-wrap;
  animation:rise .18s ease;
}
@keyframes rise{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
.bubble.in{
  background:var(--bubble-in);
  border-bottom-left-radius:6px;
  border:1px solid var(--divider);
}
.bubble.out{
  background:linear-gradient(135deg,var(--bubble-out-1),var(--bubble-out-2));
  color:var(--bubble-out-text);
  border-bottom-right-radius:6px;
}
.bubble .sender{
  font-size:12.5px;font-weight:600;
  color:var(--accent-2);margin-bottom:4px;
}
.bubble.out .sender{color:rgba(255,255,255,.85)}
.bubble .time{
  font-size:10.5px;color:rgba(255,255,255,.55);
  float:right;margin-left:12px;margin-top:6px;line-height:1;
}
.bubble.in .time{color:var(--faint)}
.bubble .time .tick{color:var(--accent-2);margin-left:3px;font-size:10px}
.bubble.out .time .tick{color:rgba(255,255,255,.85)}

.bubble img.media{
  display:block;max-width:100%;max-height:380px;object-fit:contain;
  cursor:pointer;border-radius:12px;margin:6px 0;
}
.bubble video.media{
  display:block;max-width:100%;max-height:380px;border-radius:12px;
  background:#000;margin:6px 0;
}
.bubble img.sticker{max-width:160px;max-height:160px;cursor:pointer;margin:6px 0}

/* ============ Audio card ============ */
.audio-card{
  display:flex;align-items:center;gap:12px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:22px;
  padding:6px 14px 6px 6px;margin:6px 0;
  min-width:240px;max-width:340px;
}
.audio-card .play-btn{
  width:46px;height:46px;border-radius:50%;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  border:none;color:var(--button-text);font-size:15px;cursor:pointer;
  display:grid;place-items:center;flex-shrink:0;
  box-shadow:0 6px 16px var(--ring);
  transition:filter .15s, transform .1s;
  font-family:inherit;
}
.audio-card .play-btn:hover{filter:brightness(1.1)}
.audio-card .play-btn:active{transform:scale(.95)}
.audio-card .wave{flex:1;height:22px;display:flex;align-items:center;gap:2px;overflow:hidden;cursor:pointer;touch-action:none}
.audio-card .wave span{width:2px;background:var(--muted);border-radius:1px;opacity:.7;flex-shrink:0}
.audio-card .duration{font-size:12px;color:var(--muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.audio-card audio{display:none}

/* ============ File card ============ */
.file-card{
  display:flex;align-items:center;gap:10px;
  padding:8px 10px;margin:6px 0;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:12px;
  text-decoration:none;
  color:var(--text);
  min-width:200px;max-width:320px;
  transition:border-color .15s, background .15s;
}
.file-card:hover{border-color:var(--ring);background:var(--field-bg-focus)}
.file-card .fc-ico{
  width:38px;height:38px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  color:var(--button-text);
  font-size:11px;font-weight:700;letter-spacing:.4px;
  flex-shrink:0;
}
.file-card .fc-meta{display:flex;flex-direction:column;min-width:0}
.file-card .fc-name{
  font-size:13px;font-weight:500;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.file-card .fc-sub{font-size:11px;color:var(--muted);margin-top:2px}

.missing{font-size:11.5px;color:var(--faint);font-style:italic;margin-top:4px}

.service-line{
  align-self:center;color:var(--faint);font-size:11.5px;
  padding:4px 14px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:999px;
  margin:8px 0;text-align:center;max-width:80%;
}

/* ============ Drawers ============ */
.profile-backdrop{
  position:fixed;inset:0;
  background:rgba(0,0,0,.5);
  backdrop-filter:blur(6px);
  -webkit-backdrop-filter:blur(6px);
  opacity:0;pointer-events:none;
  transition:opacity .22s ease;
  z-index:900;
}
.profile-backdrop.open{opacity:1;pointer-events:auto}

.profile, .gallery{
  position:fixed;top:0;right:0;
  height:100vh;width:380px;max-width:100vw;
  background:var(--panel-solid);
 
  border-left:1px solid var(--divider);
  transform:translateX(100%);
  transition:transform .28s cubic-bezier(.2,.7,.2,1);
  z-index:901;
  display:flex;flex-direction:column;overflow-y:auto;
  box-shadow:-24px 0 60px rgba(0,0,0,.4);
}
@media (min-width:861px){
   #sidebar{
      backdrop-filter:blur(24px) saturate(140%);
      -webkit-backdrop-filter:blur(24px) saturate(140%);
   }
}



.profile.open, .gallery.open{transform:translateX(0)}

.profile-close{
  position:absolute;top:14px;right:14px;
  background:var(--field-bg);border-radius:50%;z-index:2;
}
.profile-close:hover{background:var(--panel-active);color:var(--accent-2)}

.profile-body{
  padding:80px 24px 24px;
  display:flex;flex-direction:column;gap:14px;
  align-items:center;text-align:center;
}
.profile-name{font-size:22px;font-weight:700;letter-spacing:.2px}
.profile-status{font-size:13px;color:var(--muted)}

.profile-stats{
  width:100%;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:14px;
  padding:14px 16px;margin-top:12px;
  display:flex;flex-direction:column;gap:10px;
  text-align:left;font-size:13px;
}
.profile-stats .row{display:flex;justify-content:space-between;gap:12px;color:var(--muted)}
.profile-stats .row b{color:var(--text);font-weight:600;text-align:right;word-break:break-word}

.profile-extra{
  width:100%;
  display:flex;flex-direction:column;gap:10px;
  margin-top:6px;
}
.profile-extra .card{
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:14px;
  padding:12px 16px;
  display:flex;align-items:center;gap:10px;
  font-size:13px;
  color:var(--text);
}
.profile-extra .card .ico{
  width:32px;height:32px;border-radius:10px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  color:var(--button-text);
  flex-shrink:0;
}
.profile-extra .card small{display:block;color:var(--muted);font-size:11.5px;margin-top:2px}
.profile-extra .card audio{width:100%;margin-top:6px}

/* ============ Gallery ============ */
.gallery-body{padding:80px 18px 18px}
.gallery-body h3{font-size:16px;font-weight:600;margin-bottom:16px;text-align:center}
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:6px;
}
.gallery-grid .tile{
  aspect-ratio:1;
  background:var(--field-bg);
  border-radius:12px;
  overflow:hidden;cursor:pointer;position:relative;
  display:grid;place-items:center;
  transition:transform .15s;
}
.gallery-grid .tile:hover{transform:scale(1.03)}
.gallery-grid .tile img{width:100%;height:100%;object-fit:cover;display:block}
.gallery-grid .tile video{width:100%;height:100%;object-fit:cover;display:block}
.gallery-grid .tile .badge{
  position:absolute;bottom:6px;right:8px;
  background:rgba(0,0,0,.7);color:#fff;
  font-size:10px;padding:2px 6px;border-radius:8px;
}
.gallery-grid .tile.empty{
  font-size:12px;color:var(--muted);
  text-align:center;padding:8px;grid-column:1/-1;
  aspect-ratio:auto;
  border:1px dashed var(--divider);
}

/* ============ Lightbox ============ */
.lightbox{
  position:fixed;inset:0;
  background:rgba(0,0,0,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  display:none;align-items:center;justify-content:center;
  z-index:1000;
}
.lightbox.show{display:flex}
.lb-content{max-width:92vw;max-height:82vh;display:flex;align-items:center;justify-content:center}
.lb-content img, .lb-content video{
  max-width:92vw;max-height:82vh;border-radius:10px;object-fit:contain;
  box-shadow:0 24px 80px rgba(0,0,0,.6);
}
.lb-nav{
  position:fixed;top:50%;transform:translateY(-50%);
  background:rgba(255,255,255,.08);
  backdrop-filter:blur(10px);
  border:none;color:#fff;
  font-size:30px;width:56px;height:56px;border-radius:50%;cursor:pointer;
  display:none;place-items:center;
  transition:background .15s, transform .15s;
}
.lightbox.show .lb-nav{display:grid}
#lb-prev{left:20px} #lb-next{right:20px}
.lb-nav:hover{background:rgba(255,255,255,.2)}
.lb-nav:active{transform:translateY(-50%) scale(.95)}
.lb-toolbar{position:fixed;top:20px;right:20px;display:flex;gap:10px}
.lb-toolbar .icon-btn{
  background:rgba(255,255,255,.08);color:#fff;
  width:44px;height:44px;border-radius:50%;
}
.lb-toolbar .icon-btn:hover{background:rgba(255,255,255,.2)}
.lb-close{
  position:fixed;top:20px;left:20px;
  background:rgba(255,255,255,.08);color:#fff;
  width:44px;height:44px;border-radius:50%;
}
.lb-close:hover{background:rgba(255,255,255,.2)}
.lb-caption{
  position:fixed;bottom:22px;left:50%;transform:translateX(-50%);
  background:rgba(20,30,46,.9);
  color:#fff;
  padding:8px 18px;border-radius:999px;
  font-size:12px;
  max-width:80vw;text-align:center;
  border:1px solid var(--divider);
}

/* ============ Loading ============ */
.loading-overlay{
  position:absolute;inset:0;
  background:rgba(10,15,30,.72);
  backdrop-filter:blur(6px);
  display:none;align-items:center;justify-content:center;
  z-index:40;flex-direction:column;gap:16px;
}
.loading-overlay.show{display:flex}
.spinner{
  width:42px;height:42px;
  border:3px solid rgba(255,255,255,.12);
  border-top-color:var(--accent-2);
  border-radius:50%;
  animation:spin .9s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.loading-text{font-size:13px;color:var(--muted)}

/* ============ Doc pages ============ */
.doc-page{overflow:auto}
.doc{max-width:840px;margin:0 auto;padding:60px 24px 80px}
.doc h1{font-size:34px;margin-bottom:8px;letter-spacing:-.5px}
.doc .lead{color:var(--muted);margin-bottom:36px;font-size:15px;line-height:1.6}
.doc h2{font-size:19px;margin:36px 0 12px;color:var(--accent-2)}
.doc h3{font-size:15px;margin:22px 0 8px;color:var(--text)}
.doc p{line-height:1.7;color:var(--text);margin-bottom:14px;font-size:14.5px}
.doc ul,.doc ol{margin:0 0 16px 22px}
.doc li{line-height:1.7;margin-bottom:8px;color:var(--text);font-size:14.5px}
.doc code{background:var(--field-bg);padding:2px 7px;border-radius:6px;font-size:13px;color:var(--accent-2)}
.doc kbd{
  display:inline-block;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-bottom-width:2px;
  padding:1px 7px;border-radius:6px;
  font-size:12px;font-family:inherit;
}
.doc a{color:var(--accent-2);text-decoration:none;border-bottom:1px dashed var(--ring)}
.doc a:hover{border-bottom-color:var(--accent-2)}
.doc .back{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--muted);text-decoration:none;
  font-size:13px;margin-bottom:30px;border-bottom:none;
}
.doc .back:hover{color:var(--accent-2)}
.callout{
  background:var(--field-bg);
  border:1px solid var(--ring);
  border-radius:14px;padding:18px 20px;margin:22px 0;
  font-size:14.5px;line-height:1.65;
}
.callout strong{color:var(--accent-2)}
.doc-nav{
  display:flex;gap:12px;flex-wrap:wrap;
  padding-top:30px;margin-top:40px;
  border-top:1px solid var(--divider);
}
.doc-nav a{
  padding:10px 18px;border-radius:12px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  color:var(--text);text-decoration:none;font-size:13px;
  border-bottom:1px solid var(--divider);
}
.doc-nav a:hover{border-color:var(--ring);color:var(--accent-2)}

/* ============ Misc ============ */
input[type=file]{display:none}

/* ============ Responsive: tablet / phone ============ */
@media (max-width:860px){
  #app{padding:0;
    gap:0;
    height:100vh;
    height:100dvh
  }

  #sidebar{
    width:100%;
    position:absolute;
    inset:0;
    z-index:30;
    border-radius:0;
    border:none;
    height:auto;
    max-height:none;
  }
  #sidebar.hidden{display:none}

  .back-btn{display:grid!important}

  .chat-pane{border-radius:0;border:none}

  .messages{padding:16px}

  .profile, .gallery{width:100%}
  .gallery-grid{grid-template-columns:repeat(2,1fr)}

  .landing{
    padding:14px;
    align-items:flex-start;
  }
  .landing::before{display:none}
  .landing-card{
    padding:26px 18px;
    border-radius:20px;
    margin:0 auto;
  }
  .landing-logo{width:52px;height:52px;margin-bottom:12px}
  .landing h1{font-size:24px}
  .landing-tag{font-size:13px;margin-bottom:22px}
  .landing-enter{padding:12px 16px;font-size:13px}
  .landing-link{padding:12px 14px;gap:12px}
  .lk-icon{width:34px;height:34px;border-radius:10px}
  .lk-text strong{font-size:13px}
  .lk-text em{font-size:11.5px}

  .doc{padding:40px 18px 60px}
  .doc h1{font-size:28px}

  .brand{min-width:0}
  .brand-name{min-width:0;flex:1 1 auto}
  .brand-mark{flex:0 0 32px;width:32px;height:32px;font-size:12px}
  #btn-menu{flex:0 0 auto}
}

/* ============ Responsive: small phone ============ */
@media (max-width:600px){
  .chat-header{padding:8px 10px;gap:8px}
  .chat-header .avatar-sm{width:34px;height:34px;font-size:13px;flex-shrink:0}
  .chat-title-main{font-size:14px}
  .chat-subtitle{font-size:11px}
  .chat-header-actions{gap:0}
  .chat-header-actions .icon-btn{width:32px;height:32px;border-radius:10px}

  .bubble{max-width:86%}
  .messages{padding:12px}

  .file-card{min-width:0;max-width:100%}
  .audio-card{min-width:0;max-width:100%}

  .profile-body{padding:64px 18px 20px}
  .profile-name{font-size:19px}
  .avatar-xl{width:96px;height:96px;font-size:38px}
  .gallery-body{padding:64px 14px 14px}

  .sidebar-top{padding:12px 14px 10px}
  .brand-name{font-size:14px}
  .search-wrap{margin:10px 14px 8px}
  .load-actions{padding:0 14px 10px}
  .status{padding:0 14px 10px}
  .my-profile-card{margin:6px 10px 10px;padding:8px 10px}

  .chat-item{padding:9px 8px;gap:10px}
  .avatar-sm{width:42px;height:42px;font-size:15px}
  .chat-title{font-size:13.5px}
  .chat-preview{font-size:12px}

  .profile-extra .card{padding:10px 12px}

  .lb-nav{width:44px;height:44px;font-size:24px}
  #lb-prev{left:10px} #lb-next{right:10px}
  .lb-toolbar{top:12px;right:12px;gap:8px}
  .lb-toolbar .icon-btn{width:40px;height:40px}
  .lb-close{top:12px;left:12px;width:40px;height:40px}
  .lb-caption{bottom:12px;font-size:11px;padding:6px 14px}

  .theme-swatch{font-size:12px;padding:7px 9px}
  .theme-dot{width:14px;height:14px;border-radius:4px}
}

@media (max-width:380px){
  .chat-header-actions .icon-btn{width:30px;height:30px}
  .chat-title-main{font-size:13px}
  .bubble{max-width:90%;font-size:13px}
  .avatar-sm{width:40px;height:40px}
  .brand-name{font-size:13px}
  .brand-mark{width:28px;height:28px;font-size:11px;flex-basis:28px}
}

/* ============ Dynamic viewport (mobile URL bar) ============ */
@supports (height: 100dvh){
  #app{height:100dvh}
  .profile, .gallery{height:100dvh}
  .landing{min-height:100dvh}
}



.theme-swatch{
  -webkit-tap-highlight-color:transparent !important;
  transition:border-color .15s, box-shadow .15s !important;
  color-scheme:light dark;
}
.theme-swatch .theme-dot{
  background-color:transparent;
  border-width:1px;
  border-style:solid;
  -webkit-appearance:none;
  appearance:none;
  forced-color-adjust:none;
}
.theme-swatch[data-swatch="dark"] .theme-dot{
  background-color:#0f1a2e !important;
  border-color:rgba(255,255,255,.45) !important;
}
.theme-swatch[data-swatch="light"] .theme-dot{
  background-color:#ffffff !important;
  border-color:rgba(0,0,0,.55) !important;
}
.theme-swatch[data-swatch="ocean"] .theme-dot{
  background-color:#06b6d4 !important;
  border-color:rgba(0,0,0,.35) !important;
}
.theme-swatch[data-swatch="forest"] .theme-dot{
  background-color:#22c55e !important;
  border-color:rgba(0,0,0,.35) !important;
}

@media (max-width:860px){
  .landing::before{
    display:none !important;
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
  }
  .landing{
    background:rgba(6,12,22,.55);
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
  }
  .landing-card{
    box-shadow:0 20px 60px rgba(0,0,0,.55);
  }
}



html, body{
  width:100%;
  max-width:100vw;
  overflow-x:hidden;
}
#app{
  max-width:100vw;
}
#app[hidden]{
  display:none !important;
}



/* ============ Search filters (sidebar) ============ */
.search-filters{
  display:flex;gap:6px;
  padding:0 16px 10px;
  position:sticky;top:0;z-index:5;
  background:var(--panel-solid);
}
.sf-btn{
  flex:1;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:10px;
  padding:7px 10px;
  color:var(--muted);
  font-size:12px;font-weight:600;
  cursor:pointer;font-family:inherit;
  transition:background .15s,border-color .15s,color .15s;
  white-space:nowrap;
}
.sf-btn:hover{background:var(--field-bg-focus);color:var(--text)}
.sf-btn.active{
  background:var(--panel-active);
  border-color:var(--ring);
  color:var(--accent-2);
}

/* ============ Search results panel ============ */
.search-results{
  flex:1;overflow-y:auto;
  padding:6px 8px 8px;
}
.search-results::-webkit-scrollbar{width:6px}
.search-results::-webkit-scrollbar-thumb{background:var(--scroll);border-radius:3px}
.sr-section{
  padding:8px 10px 4px;
  font-size:11px;color:var(--faint);
  text-transform:uppercase;letter-spacing:.8px;font-weight:600;
}
.sr-empty{
  padding:18px 12px;color:var(--muted);
  font-size:12.5px;text-align:center;line-height:1.5;
}
.sr-row{
  display:flex;gap:10px;
  padding:9px 10px;
  border-radius:12px;
  cursor:pointer;
  transition:background .12s;
  margin-bottom:2px;
}
.sr-row:hover{background:var(--panel-hover)}
.sr-row.active{background:var(--panel-active)}
.sr-avatar{width:38px;height:38px;font-size:14px}
.sr-meta{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;gap:2px}
.sr-title{
  font-size:13.5px;font-weight:600;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sr-snippet{
  font-size:12px;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.sr-snippet mark{
  background:var(--accent-2);
  color:var(--button-text);
  border-radius:3px;
  padding:0 2px;
  font-weight:600;
}
.sr-date{
  font-size:11px;color:var(--faint);
  white-space:nowrap;flex-shrink:0;align-self:center;
}

/* ============ In-chat search counter + nav ============ */
.chat-search-count{
  font-size:12px;color:var(--muted);
  font-variant-numeric:tabular-nums;
  white-space:nowrap;flex-shrink:0;
  min-width:48px;text-align:center;
}
.bubble-row.dim{opacity:.35;transition:opacity .15s}
.bubble-row.match-active .bubble{
  outline:2px solid var(--accent-2);
  outline-offset:1px;
}
.bubble mark, .bubble .msg-text mark{
  background:var(--accent-2);
  color:var(--button-text);
  border-radius:3px;
  padding:0 2px;
}
.bubble.out mark, .bubble.out .msg-text mark{
  background:rgba(255,255,255,.9);
  color:#03141b;
}

/* ============ Gallery filter row ============ */
.gallery-filters{
  display:flex;gap:6px;
  margin-bottom:12px;
  position:sticky;top:64px;z-index:5;
  background:var(--panel-solid);
  padding:4px 0;
  flex-wrap:wrap;
}
.gf-btn{
  flex:1 1 auto;min-width:64px;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:10px;
  padding:7px 10px;
  color:var(--muted);
  font-size:12px;font-weight:600;
  cursor:pointer;font-family:inherit;
  transition:background .15s,border-color .15s,color .15s;
}
.gf-btn:hover{background:var(--field-bg-focus);color:var(--text)}
.gf-btn.active{
  background:var(--panel-active);
  border-color:var(--ring);
  color:var(--accent-2);
}
.gallery-grid .tile.file-tile{
  grid-column:span 1;
  padding:6px;
  font-size:10.5px;
  color:var(--muted);
  text-align:center;
  line-height:1.3;
  word-break:break-all;
}
.gallery-grid .tile.file-tile .file-ico{
  width:34px;height:34px;border-radius:9px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--accent-2),var(--accent-dark));
  color:var(--button-text);
  font-size:10px;font-weight:700;letter-spacing:.4px;
  margin-bottom:4px;
}

/* ============ Mobile tweaks for new rows ============ */
@media (max-width:600px){
  .search-filters{padding:0 12px 8px;gap:4px}
  .sf-btn{padding:6px 8px;font-size:11px}
  .gallery-filters{top:56px;gap:4px}
  .gf-btn{padding:6px 8px;font-size:11px;min-width:52px}
  .chat-search-count{font-size:11px;min-width:44px}
  .sr-avatar{width:34px;height:34px;font-size:13px}
  .sr-title{font-size:13px}
  .sr-snippet{font-size:11.5px}
}


/* ============ Search clear button ============ */
.search-wrap .search{padding-right:40px}
.search-clear{
  position:absolute;right:10px;top:50%;transform:translateY(-50%);
  width:24px;height:24px;border-radius:50%;
  background:var(--field-bg-focus);
  border:none;color:var(--muted);
  display:grid;place-items:center;cursor:pointer;
  transition:background .15s,color .15s;
}
.search-clear:hover{background:var(--panel-active);color:var(--accent-2)}

/* ============ Global file tiles: chat label ============ */
.gallery-grid .tile.file-tile .file-sub{
  display:block;
  margin-top:3px;
  font-size:9.5px;
  color:var(--faint);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  max-width:100%;
}

/* ============ Lightbox: open-in-chat button visible spacing ============ */
#lb-open-chat[style*="display: none"]{display:none !important}


/* ============ Date jump panel ============ */
.date-jump-panel{
  position:absolute;top:64px;left:12px;right:12px;bottom:12px;
  z-index:25;
  display:flex;align-items:flex-start;justify-content:center;
  pointer-events:none;
}
.date-jump-panel .date-jump-inner{
  pointer-events:auto;
  width:100%;max-width:360px;
  background:var(--panel-solid);
  border:1px solid var(--divider);
  border-radius:16px;
  box-shadow:var(--shadow-lg);
  padding:14px 14px 10px;
  display:flex;flex-direction:column;gap:10px;
  max-height:100%;
  animation:pop .16s ease;
}
.date-jump-head{
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;
}
.date-jump-head .icon-btn{width:28px;height:28px;border-radius:8px}
.date-jump-month{
  width:100%;
  background:var(--field-bg);
  border:1px solid var(--divider);
  border-radius:10px;
  padding:8px 10px;
  color:var(--text);
  font-family:inherit;
  font-size:13px;
  outline:none;
}
.date-jump-month:focus{border-color:var(--ring);box-shadow:0 0 0 3px var(--ring)}
.date-jump-list{
  flex:1;overflow-y:auto;
  max-height:min(52vh, 420px);
  display:flex;flex-direction:column;gap:2px;
  padding-right:2px;
}
.date-jump-list::-webkit-scrollbar{width:5px}
.date-jump-list::-webkit-scrollbar-thumb{background:var(--scroll);border-radius:3px}
.date-jump-day{
  display:flex;align-items:center;justify-content:space-between;
  gap:10px;
  padding:9px 11px;
  border-radius:10px;
  background:transparent;
  border:1px solid transparent;
  color:var(--text);
  font-size:12.5px;
  cursor:pointer;
  font-family:inherit;
  text-align:left;
  transition:background .12s,border-color .12s;
}
.date-jump-day:hover{background:var(--panel-hover);border-color:var(--divider)}
.date-jump-day .dj-date{font-weight:600}
.date-jump-day .dj-count{color:var(--muted);font-size:11.5px;font-variant-numeric:tabular-nums}
.date-jump-empty{
  padding:18px 10px;text-align:center;color:var(--muted);font-size:12.5px;
}

/* ============ Drop overlay ============ */
.drop-overlay{
  position:fixed;inset:0;z-index:2000;
  background:rgba(6,12,22,.82);
  display:flex;align-items:center;justify-content:center;
  pointer-events:none;
}
.drop-inner{
  background:var(--panel-solid);
  border:2px dashed var(--ring);
  border-radius:22px;
  padding:44px 56px;
  text-align:center;
  box-shadow:var(--shadow-lg);
}
.drop-ico{font-size:44px;margin-bottom:10px;line-height:1}
.drop-text{font-size:16px;font-weight:600;margin-bottom:6px}
.drop-sub{font-size:12.5px;color:var(--muted)}

/* ============ Mobile tweaks ============ */
@media (max-width:600px){
  .date-jump-panel{top:56px;left:8px;right:8px;bottom:8px}
  .date-jump-panel .date-jump-inner{padding:12px 12px 8px;border-radius:14px}
  .date-jump-day{padding:8px 10px;font-size:12px}
  .drop-inner{padding:32px 28px}
  .drop-ico{font-size:36px}
  .drop-text{font-size:14px}
}

/* ============ Copy button on bubbles ============ */
.bubble-row{position:relative}
.bubble-copy{
  position:absolute;
  top:4px;
  opacity:0;
  width:26px;height:26px;border-radius:8px;
  background:var(--panel-solid);
  border:1px solid var(--divider);
  color:var(--muted);
  display:grid;place-items:center;
  cursor:pointer;
  font-family:inherit;
  transition:opacity .12s, background .15s, color .15s;
  z-index:2;
}
.bubble-row.in .bubble-copy{right:calc(100% - min(70%,620px) - 36px)}
.bubble-row.out .bubble-copy{left:calc(100% - min(70%,620px) - 36px)}
.bubble-row:hover .bubble-copy,
.bubble-copy:focus{opacity:1}
.bubble-copy:hover{background:var(--panel-hover);color:var(--accent-2)}
.bubble-copy.copied{color:var(--green);border-color:var(--green)}
@media (max-width:600px){
  .bubble-copy{display:none}
}