/* Layout: one phone-shaped column. Opens as a working calculator; the secret code + "=" opens five tabs (Chat, Khel, Dil se, Yaad, Call). */
:root{
  --bg:#F1F4F3; --surface:#FFFFFF; --surface2:#E4EBEA; --ink:#16242B; --muted:#586B72; --line:#D3DDDC;
  --accent:#B8325A; --accent-ink:#FFFFFF; --accent-text:#B8325A; --accent-soft:#F7E0E7;
  --teal:#1F6F69; --teal-soft:#D8ECE9;
  --good:#2E7D4F; --warn:#9A5B00; --danger:#B3261E;
  --f-display:'Avenir Next','Trebuchet MS',system-ui,-apple-system,'Segoe UI',sans-serif;
  --f-body:system-ui,-apple-system,'Segoe UI',Roboto,sans-serif;
  --r:14px; --gl:max(16px,env(safe-area-inset-left,0px)); --gr:max(16px,env(safe-area-inset-right,0px));
  --c-bg:#000; --c-num:#333; --c-fn:#A5A5A5; --c-op:#FF9F0A;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0E181D; --surface:#16252B; --surface2:#1F323A; --ink:#E6EEED; --muted:#8FA5AC; --line:#2A3E46;
  --accent:#C0416B; --accent-text:#EE8FAC; --accent-soft:#3A1E2A;
  --teal:#5CBDB4; --teal-soft:#16363A; --good:#6CCB92; --warn:#E3A24A; --danger:#F2867F; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0E181D; --surface:#16252B; --surface2:#1F323A; --ink:#E6EEED; --muted:#8FA5AC; --line:#2A3E46;
  --accent:#C0416B; --accent-text:#EE8FAC; --accent-soft:#3A1E2A;
  --teal:#5CBDB4; --teal-soft:#16363A; --good:#6CCB92; --warn:#E3A24A; --danger:#F2867F; color-scheme:dark}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0}
img{max-width:100%}
html,body{height:100%}
body{background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:15px;line-height:1.45;
  padding-left:var(--gl);padding-right:var(--gr);overflow:hidden;-webkit-tap-highlight-color:transparent}
body.locked{background:var(--c-bg)}
h1,h2,h3{font-family:var(--f-display);margin:0;text-wrap:balance;letter-spacing:-.01em}
h2{font-size:20px} h3{font-size:16px}
p{margin:0}
button{font:inherit;color:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--accent-text);outline-offset:2px}
.muted{color:var(--muted)} .small{font-size:13px}
svg.ic{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:none}

/* ---------- calculator (disguise) ---------- */
#calc{height:100%;max-width:420px;margin:0 auto;display:flex;flex-direction:column;justify-content:flex-end;padding:8px 0 12px;color:#fff;user-select:none}
.c-disp{font-size:76px;font-weight:300;text-align:right;padding:0 8px 8px;min-height:96px;white-space:nowrap;overflow:hidden;font-variant-numeric:tabular-nums}
.c-disp.m{font-size:56px}.c-disp.s{font-size:42px}
.c-keys{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.c-keys button{border:0;border-radius:999px;height:min(78px,calc((100vw - 80px)/4));min-height:58px;font-size:30px;color:#fff;background:var(--c-num);font-family:var(--f-body)}
.c-keys button.fn{background:var(--c-fn);color:#000}
.c-keys button.op{background:var(--c-op);font-size:36px}
.c-keys button.op.on{background:#fff;color:var(--c-op)}
.c-keys button.zero{grid-column:span 2;text-align:left;padding-left:30px}
.c-keys button:active{filter:brightness(1.35)}

/* ---------- app shell ---------- */
#app{height:100%;max-width:560px;margin:0 auto;display:flex;flex-direction:column}
.top{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--line)}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent-text);display:grid;place-items:center;font-family:var(--f-display);font-weight:700;font-size:18px;flex:none}
.who{flex:1;min-width:0}
.who b{display:block;font-family:var(--f-display);font-size:17px;line-height:1.2;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.who span{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:4px}
.who svg.ic{width:12px;height:12px}
.iconbtn{width:42px;height:42px;border-radius:12px;border:0;background:transparent;display:grid;place-items:center;color:var(--ink)}
.iconbtn:hover{background:var(--surface2)}
main{flex:1;min-height:0;position:relative}
main>section{height:100%;display:flex;flex-direction:column;min-height:0}
.scroll{flex:1;overflow-y:auto;padding:14px 0 20px;display:flex;flex-direction:column;gap:14px}
.banner{font-size:13px;padding:8px 12px;border-radius:10px;background:var(--teal-soft);color:var(--ink);margin-top:10px}
.banner.warn{background:var(--accent-soft)}

/* ---------- chat ---------- */
#msgs{flex:1;overflow-y:auto;padding:12px 0;display:flex;flex-direction:column;gap:6px}
.day{align-self:center;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:8px 0 2px}
.row{display:flex}.row.mine{justify-content:flex-end}
.bubble{max-width:82%;padding:8px 12px 6px;border-radius:16px;background:var(--surface);border:1px solid var(--line);overflow-wrap:anywhere;cursor:pointer}
.row.mine .bubble{background:var(--accent);color:var(--accent-ink);border-color:transparent;border-bottom-right-radius:4px}
.row.theirs .bubble{border-bottom-left-radius:4px}
.row .bubble.k-sorry{background:var(--teal-soft);color:var(--ink);border-color:var(--line)}
.row .bubble.k-wish{background:var(--accent-soft);color:var(--ink);border-color:var(--line)}
.row .bubble.k-game,.row .bubble.k-call{background:var(--surface2);color:var(--ink);border-color:var(--line)}
.klabel{font-size:10.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;opacity:.75;margin-bottom:2px}
.meta{font-size:11px;opacity:.7;display:flex;gap:10px;justify-content:flex-end;margin-top:2px;min-height:16px}
.bubble .act{display:none;border:0;background:none;padding:0;font-size:11px;text-decoration:underline;color:inherit}
.bubble.rev .act{display:inline}
.replies{display:flex;gap:6px;flex-wrap:wrap;margin-top:6px}
body.blur .bubble:not(.rev) .t,body.blur .bubble:not(.rev) .klabel{filter:blur(7px);user-select:none}
.chips{display:flex;gap:8px;overflow-x:auto;padding:8px 0;scrollbar-width:none}
.chips::-webkit-scrollbar{display:none}
.chip{flex:none;border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:6px 12px;font-size:13px}
.chip[aria-pressed=true]{background:var(--accent);color:var(--accent-ink);border-color:transparent}
.composer{display:flex;gap:8px;padding:4px 0 10px}
.in{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);font:inherit;font-size:16px}
.composer .in{border-radius:999px}
textarea.in{resize:vertical;min-height:84px}
.send{width:46px;height:46px;flex:none;border-radius:50%;border:0;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center}
.send:disabled,.btn:disabled{opacity:.5}
.empty{margin:auto;text-align:center;color:var(--muted);max-width:30ch;padding:20px}

/* ---------- nav ---------- */
.tabs{display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);padding:4px 0 6px}
.tabs button{border:0;background:none;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0;font-size:11px;color:var(--muted);position:relative}
.tabs button[aria-selected=true]{color:var(--accent-text);font-weight:700}
.tabs .dot{position:absolute;top:4px;left:calc(50% + 8px);width:9px;height:9px;border-radius:50%;background:var(--accent)}

/* ---------- shared bits ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.stack{display:flex;flex-direction:column;gap:10px}
.rowflex{display:flex;gap:10px;align-items:center}
.rowflex.wrap{flex-wrap:wrap}
.grow{flex:1;min-width:0}
.seg{display:flex;background:var(--surface2);border-radius:12px;padding:3px;gap:2px}
.seg button{flex:1;padding:8px 6px;border:0;background:transparent;color:var(--muted);border-radius:9px;font-weight:500;font-size:14px}
.seg button[aria-selected=true]{background:var(--surface);color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.15)}
.btn{padding:11px 16px;border-radius:12px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font-weight:700;display:inline-flex;gap:8px;align-items:center;justify-content:center}
.btn.primary{background:var(--accent);color:var(--accent-ink);border-color:transparent}
.btn.small{padding:6px 12px;font-size:13px;border-radius:10px}
.btn.danger{color:var(--danger)}
label.f{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--muted)}
.tile{border:1px solid var(--line);background:var(--surface);border-radius:var(--r);padding:16px;text-align:left;display:flex;flex-direction:column;gap:6px;color:var(--ink)}
.tile svg.ic{color:var(--accent-text);width:26px;height:26px}
.tile b{font-family:var(--f-display);font-size:17px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.bigq{font-family:var(--f-display);font-size:22px;line-height:1.3;text-wrap:balance}
.templ{width:100%;text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px 12px;color:var(--ink)}
.templ:hover{border-color:var(--accent-text)}
.item{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px}
.item .num{font-family:var(--f-display);font-size:26px;font-weight:700;min-width:54px;text-align:center;line-height:1}
.item .num small{display:block;font-family:var(--f-body);font-size:11px;font-weight:400;color:var(--muted);margin-top:2px}
.item.late{border-color:var(--warn)}
.tag{display:inline-block;font-size:11px;font-weight:700;padding:2px 8px;border-radius:999px;background:var(--surface2);color:var(--muted)}
.tag.warn{background:var(--accent-soft);color:var(--warn)}
.board{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;max-width:320px;margin:0 auto;width:100%}
.cell{aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:var(--surface);font-family:var(--f-display);font-size:44px;font-weight:700;color:var(--ink);max-width:100%}
.cell.x{color:var(--accent-text)}.cell.o{color:var(--teal)}
.cell:disabled{opacity:1}
.pick{width:100%;text-align:left;padding:14px;border-radius:var(--r);border:2px solid var(--line);background:var(--surface);font-weight:500;color:var(--ink)}
.pick.mine{border-color:var(--accent-text)}
.pick.theirs{border-color:var(--teal)}

/* ---------- sheets, alarm, call ---------- */
.sheet{position:fixed;inset:0;background:rgba(0,0,0,.55);display:flex;align-items:flex-end;justify-content:center;z-index:50}
.sheet.mid{align-items:center;padding:0 16px}
.panel{background:var(--bg);color:var(--ink);width:100%;max-width:560px;border-radius:20px 20px 0 0;padding:20px max(16px,env(safe-area-inset-right,0px)) calc(20px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px));max-height:92%;overflow:auto;display:flex;flex-direction:column;gap:12px}
.sheet.mid .panel{border-radius:20px;max-width:420px;padding:22px}
.callscreen{position:fixed;inset:0;z-index:60;background:#0E181D;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:24px}
.ring{position:relative;width:120px;height:120px;border-radius:50%;background:#C0416B;display:grid;place-items:center;font-family:var(--f-display);font-size:48px;margin-bottom:10px}
.ring::before,.ring::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid #C0416B;animation:pulse 2s ease-out infinite}
.ring::after{animation-delay:1s}
.ring.still::before,.ring.still::after{animation:none;opacity:0}
@keyframes pulse{from{transform:scale(1);opacity:.7}to{transform:scale(1.9);opacity:0}}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(84px + env(safe-area-inset-bottom,0px));background:var(--ink);color:var(--bg);padding:9px 16px;border-radius:999px;font-size:14px;z-index:70;max-width:90vw;text-align:center}
@media (prefers-reduced-motion:reduce){.ring::before,.ring::after{animation:none}}

/* ---------- additions for the installable build ---------- */
html{background:var(--bg)}
body{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
.sdot{width:8px;height:8px;border-radius:50%;background:var(--muted);display:inline-block;flex:none}
.sdot.on{background:var(--good)}
.codebox{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:22px;letter-spacing:.08em;text-align:center;padding:16px 8px;border:1px dashed var(--line);border-radius:12px;background:var(--surface);overflow-wrap:anywhere;user-select:all}
.callscreen{overflow:hidden}
#remoteV{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:#000}
#localV{position:absolute;right:16px;top:calc(16px + env(safe-area-inset-top,0px));width:104px;aspect-ratio:3/4;object-fit:cover;border-radius:12px;background:#222;z-index:2;transform:scaleX(-1)}
.callinfo{position:relative;z-index:1;display:flex;flex-direction:column;align-items:center;gap:10px}
.callscreen.hasv .callinfo{position:absolute;top:calc(20px + env(safe-area-inset-top,0px));left:16px;align-items:flex-start;text-align:left}
.callscreen.hasv .ring{display:none}
.callbar{position:absolute;bottom:calc(32px + env(safe-area-inset-bottom,0px));left:0;right:0;display:flex;justify-content:center;gap:18px;z-index:3}
.cbtn{width:62px;height:62px;border-radius:50%;border:0;background:rgba(255,255,255,.2);color:#fff;display:grid;place-items:center}
.cbtn.off{background:#fff;color:#000}
.cbtn.hang{background:#D93025}
.cbtn.hang svg{transform:rotate(135deg)}
.cbtn.accept{background:#1E9E5A}
.cbtn svg{width:26px;height:26px}