[hidden]{display:none!important}
:root{
  --bg:#f5f4f1; --surface:#ffffff; --surface-2:#f0eee9; --ink:#1d1b22; --muted:#6b6672; --line:#e4e1da;
  --pink:#ff4f6e; --pink-ink:#ffffff; --pink-soft:#ffe3e8; --mine:#ff4f6e; --mine-ink:#ffffff; --theirs:#ffffff;
  --good:#1f9d5c; --danger:#d83a3a; --chatbg:#efece6;
  --radius:16px; --shadow:0 1px 2px rgba(20,16,30,.06),0 6px 20px rgba(20,16,30,.06);
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#121117; --surface:#1b1a22; --surface-2:#24222c; --ink:#f3f1f6; --muted:#a09aab; --line:#2e2b37;
    --pink-soft:#3a1c25; --theirs:#24222c; --chatbg:#16151c; --shadow:0 1px 2px rgba(0,0,0,.4);
    color-scheme:dark;
  }
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased}
button,input,textarea{font:inherit;color:inherit}
h1{font-size:26px;line-height:1.2;font-weight:800;letter-spacing:-.4px}
h2{font-size:20px;font-weight:800}
.muted{color:var(--muted)} .small{font-size:13px}
.min0{min-width:0;flex:1}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.center-row{justify-content:center}
.stack{display:flex;flex-direction:column;gap:10px}
hr{border:0;border-top:1px solid var(--line);margin:4px 0;width:100%}

/* botones */
button{cursor:pointer;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:10px 16px;font-weight:600;min-height:44px;transition:transform .08s ease,background .15s}
button:active{transform:scale(.97)}
button:disabled{opacity:.5;cursor:default;transform:none}
button.primary{background:var(--pink);border-color:var(--pink);color:var(--pink-ink)}
button.big{font-size:17px;padding:14px}
button.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 40%,transparent)}
button.link{background:none;border:0;color:var(--pink);text-decoration:underline;text-underline-offset:3px;min-height:auto;padding:6px}
button.icon{background:none;border:0;min-width:44px;padding:6px;font-size:22px;line-height:1}
:focus-visible{outline:3px solid color-mix(in srgb,var(--pink) 60%,transparent);outline-offset:2px}

input,textarea{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:12px;padding:12px 14px;outline:none;min-height:46px}
input:focus,textarea:focus{border-color:var(--pink)}
.lbl{font-weight:700}
.hint{margin:0;font-size:13px;color:var(--muted)}
.err{margin:0;color:var(--danger);font-size:14px;font-weight:600}

.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow);width:100%;max-width:400px}

/* pantallas de inicio */
.screen{min-height:100%;padding:32px 16px calc(32px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:16px}
.screen.center{align-items:center;justify-content:center;text-align:center}
.screen .card{text-align:left}
.logo-big{width:170px;height:74px;color:var(--ink)}
.logo-sm{width:76px;height:34px;color:var(--ink);flex:none}
.lead{font-size:18px;margin:0}
.bigemoji{font-size:44px;line-height:1}
.code{font:800 28px/1.2 ui-monospace,"SFMono-Regular",Menlo,monospace;letter-spacing:2px;background:var(--surface-2);border-radius:12px;padding:14px;margin:4px 0;user-select:all;word-break:break-all}

/* app */
.app{height:100dvh;display:grid;grid-template-columns:minmax(300px,380px) 1fr;background:var(--bg)}
.side{display:flex;flex-direction:column;min-height:0;background:var(--surface);border-right:1px solid var(--line)}
.top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:calc(12px + env(safe-area-inset-top)) 16px 8px}
.mebtn{display:flex;align-items:center;gap:8px;border:0;background:var(--surface-2);border-radius:999px;padding:4px 12px 4px 4px;min-height:40px;max-width:60%}
.mebtn span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tabs{display:flex;gap:4px;padding:4px 12px 8px;border-bottom:1px solid var(--line)}
.tabs button{flex:1;border:0;background:none;border-radius:10px;padding:8px 6px;color:var(--muted);font-size:15px;min-height:40px}
.tabs button[aria-selected="true"]{background:var(--pink-soft);color:var(--ink)}
.badge{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:var(--pink);color:#fff;font-size:12px;font-weight:800;margin-left:4px}
.pane{flex:1;overflow-y:auto;padding:8px 8px calc(12px + env(safe-area-inset-bottom))}
.pane h3{font-size:13px;text-transform:uppercase;letter-spacing:.6px;color:var(--muted);margin:14px 10px 6px}
.empty{padding:28px 18px;text-align:center;color:var(--muted)}
.empty .bigemoji{margin-bottom:8px}

.item{display:flex;align-items:center;gap:12px;width:100%;text-align:left;border:0;background:none;border-radius:14px;padding:10px;min-height:64px}
.item:hover{background:var(--surface-2)}
.item[aria-current="true"]{background:var(--pink-soft)}
.item .txt{min-width:0;flex:1}
.item .name{font-weight:700;display:flex;justify-content:space-between;gap:8px}
.item .name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.item .time{font-weight:500;font-size:12px;color:var(--muted);flex:none}
.item .prev{color:var(--muted);font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;justify-content:space-between;gap:8px}
.item .prev span{overflow:hidden;text-overflow:ellipsis}
.item .acts{display:flex;gap:6px;flex:none}
.item .acts button{min-height:38px;padding:6px 12px;font-size:14px}
.unread .name span:first-child,.unread .prev span{color:var(--ink);font-weight:700}
.unread .time{color:var(--pink);font-weight:700}
.dot{width:11px;height:11px;border-radius:50%;background:var(--pink);flex:none;align-self:center}

.avatar{--h:330;width:46px;height:46px;flex:none;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:19px;color:#fff;background:hsl(var(--h) 70% 55%)}
.avatar.sm{width:32px;height:32px;font-size:14px}

.search{display:flex;align-items:center;gap:8px;background:var(--surface-2);border-radius:12px;padding:0 12px;margin:6px 4px 8px}
.search input{border:0;background:none;padding-left:0}

/* chat */
.chat{position:relative;display:flex;flex-direction:column;min-height:0;background:var(--chatbg)}
.empty-chat{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;padding:24px}
.empty-chat .logo-big{opacity:.35}
.chat-in{display:flex;flex-direction:column;min-height:0;height:100%}
.chat-top{position:relative;display:flex;align-items:center;gap:10px;padding:calc(8px + env(safe-area-inset-top)) 8px 8px;background:var(--surface);border-bottom:1px solid var(--line)}
.chat-top b{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
#backBtn{display:none}
.menu{position:absolute;right:10px;top:calc(100% - 4px);z-index:5;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:6px;display:flex;flex-direction:column;min-width:190px}
.menu button{border:0;background:none;text-align:left;border-radius:10px}
.menu button:hover{background:var(--surface-2)}
.msgs{flex:1;overflow-y:auto;padding:14px 12px;display:flex;flex-direction:column;gap:4px}
.day{align-self:center;font-size:12px;color:var(--muted);background:var(--surface);border-radius:999px;padding:3px 10px;margin:10px 0 6px;box-shadow:var(--shadow)}
.bubble{max-width:min(78%,520px);padding:8px 12px 6px;border-radius:18px;box-shadow:0 1px 1px rgba(0,0,0,.06);white-space:pre-wrap;overflow-wrap:anywhere;position:relative}
.bubble .t{display:block;text-align:right;font-size:11px;opacity:.7;margin-top:2px}
.bubble.mine{align-self:flex-end;background:var(--mine);color:var(--mine-ink);border-bottom-right-radius:6px}
.bubble.theirs{align-self:flex-start;background:var(--theirs);border-bottom-left-radius:6px}
.bubble.emoji-only{background:none;box-shadow:none;font-size:44px;line-height:1.1;padding:2px 4px}
.bubble.emoji-only .t{color:var(--muted);opacity:1}
.chat-start{align-self:center;text-align:center;color:var(--muted);font-size:14px;padding:16px;max-width:320px}
.blocked-note{padding:14px 16px;text-align:center;background:var(--surface);border-top:1px solid var(--line);color:var(--muted)}
.composer{display:flex;align-items:flex-end;gap:6px;padding:8px 8px calc(8px + env(safe-area-inset-bottom));background:var(--surface);border-top:1px solid var(--line)}
.composer textarea{resize:none;max-height:140px;border-radius:22px;padding:11px 16px;line-height:1.35}
.send{flex:none;width:46px;height:46px;min-height:46px;border-radius:50%;padding:0;background:var(--pink);border-color:var(--pink);color:#fff;font-size:19px}
.emo{flex:none}

.emoji-panel{background:var(--surface);border-top:1px solid var(--line);display:flex;flex-direction:column;max-height:260px}
.emoji-cats{display:flex;gap:2px;padding:6px 6px 0;overflow-x:auto;flex:none}
.emoji-cats button{border:0;background:none;font-size:22px;min-height:40px;padding:4px 10px;border-radius:10px}
.emoji-cats button[aria-pressed="true"]{background:var(--pink-soft)}
.emoji-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:2px;padding:6px;overflow-y:auto}
.emoji-grid button{border:0;background:none;font-size:26px;min-height:44px;padding:0;border-radius:10px}
.emoji-grid button:hover{background:var(--surface-2)}

/* ajustes */
.overlay{position:fixed;inset:0;z-index:20;background:rgba(10,8,14,.45);display:flex;align-items:center;justify-content:center;padding:16px}
.sheet{max-width:420px}

.toast{position:fixed;left:50%;top:calc(14px + env(safe-area-inset-top));transform:translateX(-50%);z-index:30;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:12px;font-weight:600;font-size:14px;box-shadow:var(--shadow);max-width:calc(100% - 32px);text-align:center}

/* celular: una pantalla a la vez */
@media (max-width: 760px){
  .app{grid-template-columns:1fr}
  .side{border-right:0}
  .chat{position:fixed;inset:0;z-index:10;transform:translateX(100%);transition:transform .22s ease;visibility:hidden}
  .app.chatting .chat{transform:none;visibility:visible}
  #backBtn{display:inline-block}
  .empty-chat{display:none}
}
@media (prefers-reduced-motion: reduce){ .chat{transition:none} button{transition:none} }

/* --- grupos, audios y llamadas --- */
.newgroup{display:flex;align-items:center;gap:10px;width:100%;border:0;background:none;border-radius:14px;padding:10px;font-weight:700;color:var(--pink);min-height:56px;text-align:left}
.newgroup:hover{background:var(--surface-2)}
.newgroup .gicon{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;background:var(--pink-soft);font-size:22px}
.avatar.group{background:linear-gradient(135deg,hsl(var(--h) 70% 55%),hsl(calc(var(--h) + 60) 70% 55%))}
.avatar.xl{width:84px;height:84px;font-size:34px}
.sender{display:block;font-size:12.5px;font-weight:700;margin-bottom:2px;color:hsl(var(--h) 60% 42%)}
@media (prefers-color-scheme: dark){ .sender{color:hsl(var(--h) 70% 70%)} }
.pill{align-self:center;max-width:90%;text-align:center;font-size:13px;color:var(--muted);background:var(--surface);border-radius:12px;padding:6px 12px;margin:6px 0;box-shadow:var(--shadow);display:flex;flex-direction:column;align-items:center;gap:6px}
.pill b{color:var(--ink)}
.pill button{min-height:36px;padding:6px 14px;font-size:14px}
.audio{display:flex;align-items:center;gap:10px;min-width:210px}
.audio .play{width:40px;height:40px;min-height:40px;border-radius:50%;padding:0;border:0;font-size:16px;display:grid;place-items:center;flex:none;background:rgba(255,255,255,.25);color:inherit}
.bubble.theirs .audio .play{background:var(--pink);color:#fff}
.audio .bar{flex:1;height:5px;border-radius:999px;background:currentColor;opacity:.25;position:relative;overflow:hidden}
.audio .bar i{position:absolute;inset:0 auto 0 0;width:0;background:currentColor;opacity:1;border-radius:999px}
.audio .dur{font-size:12px;opacity:.8;min-width:34px;text-align:right}
.recbar{display:flex;align-items:center;gap:10px;padding:8px 8px calc(8px + env(safe-area-inset-bottom));background:var(--surface);border-top:1px solid var(--line)}
.rec-dot{width:12px;height:12px;border-radius:50%;background:var(--danger);animation:blink 1s infinite}
.rec-time{font-weight:700;font-variant-numeric:tabular-nums}
@keyframes blink{50%{opacity:.25}}
.checklist{display:flex;flex-direction:column;gap:2px;max-height:46vh;overflow-y:auto;margin:0 -6px}
.check{display:flex;align-items:center;gap:12px;padding:8px 6px;border-radius:12px;cursor:pointer}
.check:hover{background:var(--surface-2)}
.check input{width:22px;height:22px;min-height:0;accent-color:var(--pink);flex:none}
.memberrow{display:flex;align-items:center;gap:12px;padding:6px 0}
/* llamada entrante */
.ring{z-index:40}
.ringcard{max-width:340px;text-align:center;align-items:center}
.ringcard .avatar{animation:pulse 1.4s ease-in-out infinite}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,79,110,.5)}50%{box-shadow:0 0 0 16px rgba(255,79,110,0)}}
button.answer{background:#1fa463;border-color:#1fa463;color:#fff;min-width:120px}
button.decline{background:var(--danger);border-color:var(--danger);color:#fff;min-width:120px}
/* en llamada */
.callview{position:fixed;inset:0;z-index:35;background:#0f0e13;color:#fff;display:flex;flex-direction:column;padding:calc(12px + env(safe-area-inset-top)) 12px calc(16px + env(safe-area-inset-bottom))}
.call-head{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0 12px}
.call-head .muted{color:#b9b3c4}
.tiles{flex:1;display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));grid-auto-rows:minmax(160px,1fr);min-height:0;overflow-y:auto}
.tile{position:relative;border-radius:18px;overflow:hidden;background:#1d1b25;display:grid;place-items:center}
.tile video{width:100%;height:100%;object-fit:cover}
.tile.me video{transform:scaleX(-1)}
.tile .nm{position:absolute;left:10px;bottom:10px;background:rgba(0,0,0,.5);padding:3px 10px;border-radius:999px;font-size:13px;font-weight:600}
.tile.speaking{outline:3px solid #22c06d;outline-offset:-3px}
.call-ctrls{display:flex;justify-content:center;gap:16px;padding-top:14px}
.cbtn{width:60px;height:60px;border-radius:50%;padding:0;font-size:24px;background:#2a2733;border:0;color:#fff}
.cbtn[aria-pressed="true"]{background:#fff;color:#111}
.cbtn.hang{background:var(--danger);transform:rotate(135deg)}
.cbtn.hang:active{transform:rotate(135deg) scale(.95)}