/* Layout: one phone-width column of candy "keycap" cards. Calculator page: LCD result, inputs, Gullu + split chart, gamified visual, extras, tip, actions, learn. Single deliberate light look; user picks color strength, contrast, text size and look in Settings. */
:root{
  color-scheme: light;
  --sky:#C4E3FF; --body:#6FB1F7; --body-edge:#3F86D6;
  --card:#FFFFFF; --card-edge:#8EC0F2;
  --ink:#1A2340; --ink-soft:#33405E; --blue:#2463E0; --blue-edge:#1847A8;
  --mint:#6EDC9C; --mint-edge:#2FB46A; --mint-ink:#0C4A2A;
  --pink:#FF94BB; --pink-edge:#E0628F; --yellow:#FFD43B; --yellow-edge:#E0AE10; --lav:#B49CFF; --lav-edge:#7E62E0;
  --hi:rgba(255,255,255,.6); --track:rgba(255,255,255,.65); --ad-bg:rgba(255,255,255,.55); --hc:#000000;
  --ck:#F3F5F8; --ck-e:#C9CFD8; --ck-fn:#E7EAF0; --ck-op:#E3EBF8; --ck-op-e:#B9C9E6;
  --wa:#168A45; --wa-edge:#0F6431; --red:#E5383B; --red-edge:#A8232A; --saffron:#F28C0F;
  --lcd:#C6F26B; --lcd-ink:#1B3309;
  --kblue:#A8D2FF; --kblue-edge:#5E9EE6;
  --clay:#E58B5E; --clay-dark:#D9764A; --clay-deep:#C8663D;
  --display:'Baloo 2', 'Mukta', system-ui, sans-serif;
  --text:'Mukta', 'Noto Sans Devanagari', system-ui, sans-serif;
}
:root[data-palette="soft"]{--sky:#DCEBF7;--body:#BFD9F0;--body-edge:#9DBFE0;--card-edge:#B3CCE4;--blue:#2F5DA8;--blue-edge:#1F3F78;--mint:#B8E6C9;--mint-edge:#86C9A0;--mint-ink:#1F5C3A;--pink:#F7C6D4;--pink-edge:#DE97AC;--yellow:#F8E39A;--yellow-edge:#DDC163;--lav:#D6CCF2;--lav-edge:#AE9FDD;--lcd:#CFDCC0;--lcd-ink:#24321C;--kblue:#D3E6F8;--kblue-edge:#9DBFE0}
:root[data-palette="vivid"]{--sky:#A9D6FF;--body:#3D95F5;--body-edge:#1E6FCC;--card-edge:#6AAAF0;--blue:#1A56D6;--blue-edge:#103C9E;--mint:#3FD47F;--mint-edge:#1C9E55;--pink:#FF6FA5;--pink-edge:#D63F78;--yellow:#FFC800;--yellow-edge:#D19E00;--lav:#9677FF;--lav-edge:#6A47E0;--lcd:#B4F23A;--kblue:#7DBDFF;--kblue-edge:#3F86D6}
:root.classic{
  --sky:#EEF1F5; --body:#FFFFFF; --body-edge:#D5DAE1; --card:#FFFFFF; --card-edge:#D5DAE1;
  --ink:#1C2430; --ink-soft:#535D6C; --blue:#1F4E9C; --blue-edge:#163A75;
  --mint:#E6F2EA; --mint-edge:#2E8B57; --mint-ink:#1D5C39;
  --pink:#F6E6EA; --pink-edge:#B4435F; --yellow:#FAF1D9; --yellow-edge:#A8841C;
  --lav:#ECE8F6; --lav-edge:#6750A4; --kblue:#F3F5F8; --kblue-edge:#C9CFD8;
  --lcd:#F4F6F8; --lcd-ink:#1C2430;
  --display:'Mukta','Noto Sans Devanagari',system-ui,sans-serif;
}
:root[data-contrast="high"]{--ink:#000000;--ink-soft:#1A1A1A;--card-edge:#1A2340;--mint-ink:#003318}

/* ================= Dark mode: Auto (follows the device), Light or Dark from Settings ================= */
:root[data-theme="dark"]{color-scheme:dark;
  --sky:#0E1530; --body:#1F3A7A; --body-edge:#13295C; --card:#18213F; --card-edge:#0A0F24;
  --ink:#EEF2FF; --ink-soft:#B7C1DD; --blue:#4A7CF0; --blue-edge:#2552C4;
  --mint:#1D6646; --mint-edge:#35B97A; --mint-ink:#C4F5DA;
  --pink:#772A4C; --pink-edge:#E0628F; --yellow:#674F0E; --yellow-edge:#D9A514;
  --lav:#43357E; --lav-edge:#9A82FF; --kblue:#233770; --kblue-edge:#4F78D6;
  --lcd:#B8E35A; --lcd-ink:#13260A; --red-edge:#8E1A20;
  --hi:rgba(255,255,255,.08); --track:rgba(255,255,255,.14); --ad-bg:rgba(255,255,255,.05); --hc:#FFFFFF;}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"]{color-scheme:dark;
  --sky:#0E1530; --body:#1F3A7A; --body-edge:#13295C; --card:#18213F; --card-edge:#0A0F24;
  --ink:#EEF2FF; --ink-soft:#B7C1DD; --blue:#4A7CF0; --blue-edge:#2552C4;
  --mint:#1D6646; --mint-edge:#35B97A; --mint-ink:#C4F5DA;
  --pink:#772A4C; --pink-edge:#E0628F; --yellow:#674F0E; --yellow-edge:#D9A514;
  --lav:#43357E; --lav-edge:#9A82FF; --kblue:#233770; --kblue-edge:#4F78D6;
  --lcd:#B8E35A; --lcd-ink:#13260A; --red-edge:#8E1A20;
  --hi:rgba(255,255,255,.08); --track:rgba(255,255,255,.14); --ad-bg:rgba(255,255,255,.05); --hc:#FFFFFF;} }
:root[data-theme="dark"].classic{color-scheme:dark;
  --sky:#121518; --body:#1B1F24; --body-edge:#2C323A; --card:#1B1F24; --card-edge:#2E343D;
  --ink:#E6E9EE; --ink-soft:#A6AEBA; --blue:#5B8DEF; --blue-edge:#3C6CC9;
  --mint:#1E3328; --mint-edge:#4CC38A; --mint-ink:#A8E6C6;
  --pink:#3A2229; --pink-edge:#E07A93; --yellow:#3A321C; --yellow-edge:#D9B44A;
  --lav:#2A2540; --lav-edge:#A08CF0; --kblue:#242A31; --kblue-edge:#3A414B;
  --lcd:#15191E; --lcd-ink:#E6E9EE;
  --ck:#252A31; --ck-e:#3A414B; --ck-fn:#2E343D; --ck-op:#1F2C45; --ck-op-e:#35507F;
  --hi:rgba(255,255,255,.05); --track:rgba(255,255,255,.12); --ad-bg:rgba(255,255,255,.03); --hc:#FFFFFF;}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"].classic{color-scheme:dark;
  --sky:#121518; --body:#1B1F24; --body-edge:#2C323A; --card:#1B1F24; --card-edge:#2E343D;
  --ink:#E6E9EE; --ink-soft:#A6AEBA; --blue:#5B8DEF; --blue-edge:#3C6CC9;
  --mint:#1E3328; --mint-edge:#4CC38A; --mint-ink:#A8E6C6;
  --pink:#3A2229; --pink-edge:#E07A93; --yellow:#3A321C; --yellow-edge:#D9B44A;
  --lav:#2A2540; --lav-edge:#A08CF0; --kblue:#242A31; --kblue-edge:#3A414B;
  --lcd:#15191E; --lcd-ink:#E6E9EE;
  --ck:#252A31; --ck-e:#3A414B; --ck-fn:#2E343D; --ck-op:#1F2C45; --ck-op-e:#35507F;
  --hi:rgba(255,255,255,.05); --track:rgba(255,255,255,.12); --ad-bg:rgba(255,255,255,.03); --hc:#FFFFFF;} }
:root[data-theme="dark"][data-contrast="high"]{--ink:#FFFFFF;--ink-soft:#F0F0F0;--card-edge:#FFFFFF;--mint-ink:#E6FFF0;}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"][data-contrast="high"]{--ink:#FFFFFF;--ink-soft:#F0F0F0;--card-edge:#FFFFFF;--mint-ink:#E6FFF0;} }
:root[data-theme="dark"] .desi-id .avatar{box-shadow:0 0 0 3px #5A3A12}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"] .desi-id .avatar{box-shadow:0 0 0 3px #5A3A12} }
:root[data-theme="dark"] .lang-btn svg{background:#EEF2FF;border-radius:8px;padding:1px}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"] .lang-btn svg{background:#EEF2FF;border-radius:8px;padding:1px} }
:root[data-theme="dark"] .t-tree .trees svg{filter:brightness(1.45) saturate(1.15)}
@media (prefers-color-scheme: dark){ :root[data-theme="auto"] .t-tree .trees svg{filter:brightness(1.45) saturate(1.15)} }

:root[data-contrast="high"] .panel,:root[data-contrast="high"] .machine,:root[data-contrast="high"] .visual,:root[data-contrast="high"] .key,:root[data-contrast="high"] .icon-btn,:root[data-contrast="high"] .lcd,:root[data-contrast="high"] .tile,:root[data-contrast="high"] .ck,:root[data-contrast="high"] .basic-card{border:2px solid var(--hc)}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{background:var(--sky);color:var(--ink);font-family:var(--text);font-size:16px;line-height:1.45}
.wrap{max-width:440px;margin:0 auto;padding-inline:16px;padding-block:18px 32px;display:flex;flex-direction:column;gap:18px}
h1,h2,h3{font-family:var(--display);margin:0;line-height:1.1;text-wrap:balance}
p{margin:0}
button,input,select{font-family:inherit;color:inherit}
a{color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:3px}

.top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.brand{display:flex;align-items:center;gap:8px;text-decoration:none;min-width:0}
.brand .brand-txt{font-family:var(--display);font-size:22px;font-weight:800;line-height:1.1;margin:0}
.brand .brand-txt span{color:var(--blue)}
.page-title{font-size:24px;font-weight:800;flex:1;min-width:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.tag{display:inline-block;border-radius:12px;padding:1px 10px;font-size:13px;font-weight:700;color:var(--ink)}
.top-actions{display:flex;align-items:center;gap:8px;flex:none}
.lang-btn{display:inline-flex;align-items:center;gap:6px;height:44px;padding:0 14px 0 9px;border-radius:22px;background:var(--card);color:var(--ink);box-shadow:0 4px 0 var(--card-edge);font-weight:700;font-size:15px;text-decoration:none;white-space:nowrap}
.lang-btn svg{display:block;flex:none}
.lang-btn:active{transform:translateY(3px)}
@media (max-width: 480px){.lang-btn{padding:0 10px}.lang-btn span{display:none}.brand .brand-txt{font-size:20px}.brand svg{width:34px;height:34px}}
.icon-btn{width:44px;height:44px;border:none;border-radius:50%;background:var(--card);color:var(--ink);box-shadow:0 4px 0 var(--card-edge);display:grid;place-items:center;cursor:pointer;flex:none;text-decoration:none}
.icon-btn.off{background:var(--pink);box-shadow:0 4px 0 var(--pink-edge)}
.icon-btn:active,.key:active,.tile-link:active{transform:translateY(3px)}

.panel{background:var(--card);border-radius:26px;padding:18px;box-shadow:0 6px 0 var(--card-edge)}
.machine{background:var(--body);border-radius:32px;padding:16px;box-shadow:0 8px 0 var(--body-edge),inset 0 2px 0 var(--hi)}
.lcd{background:var(--lcd);color:var(--lcd-ink);border-radius:18px;padding:14px 18px;box-shadow:inset 0 4px 0 rgba(36,50,28,.18)}
.lcd small{font-size:14px;font-weight:500;display:block}
.lcd .big{font-family:var(--display);font-weight:800;font-size:clamp(30px,9.5vw,42px);line-height:1.05;font-variant-numeric:tabular-nums;letter-spacing:.5px;overflow-wrap:anywhere}
.lcd .words{font-weight:700}

.inputs{display:flex;flex-direction:column;gap:20px}
.panel h2.sec{font-size:19px;font-weight:800}
.row-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:6px;flex-wrap:wrap}
.row-head label,.flabel{font-weight:700}
.pill{display:flex;align-items:center;border-radius:14px;padding:2px 10px;font-weight:700;margin-left:auto}
.pill input{width:96px;border:none;background:transparent;font-weight:700;font-size:16px;text-align:right;font-variant-numeric:tabular-nums;padding:4px 0;color:var(--ink);-webkit-text-fill-color:var(--ink);color-scheme:light}
.pill input:focus{outline:none}
.pill:focus-within{outline:3px solid var(--blue);outline-offset:2px}
.c-mint{background:var(--mint)} .c-pink{background:var(--pink)} .c-yellow{background:var(--yellow)} .c-lav{background:var(--lav)} .c-sky{background:var(--sky)}
input[type=range]{-webkit-appearance:none;appearance:none;width:100%;height:28px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:12px;border-radius:6px;background:linear-gradient(to right,var(--blue) var(--fill,50%),var(--sky) var(--fill,50%))}
input[type=range]::-moz-range-track{height:12px;border-radius:6px;background:var(--sky)}
input[type=range]::-moz-range-progress{height:12px;border-radius:6px;background:var(--blue)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;margin-top:-8px;border-radius:50%;background:var(--pink);border:3px solid #fff;box-shadow:0 3px 0 var(--pink-edge)}
input[type=range]::-moz-range-thumb{width:24px;height:24px;border-radius:50%;background:var(--pink);border:3px solid #fff;box-shadow:0 3px 0 var(--pink-edge)}
.range-ends{display:flex;justify-content:space-between;font-size:12px;color:var(--ink-soft)}
.small-row{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap}
.small-in{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--ink-soft)}
.small-in input,.date-in{height:40px;border:2px solid var(--card-edge);border-radius:12px;padding:0 10px;background:var(--yellow);color:var(--ink);-webkit-text-fill-color:var(--ink);color-scheme:light;font-size:16px;font-weight:700;font-variant-numeric:tabular-nums}
.small-in input{width:84px;text-align:center}
.date-in{width:100%;background:var(--lav)}

.opt{display:flex;gap:8px;flex-wrap:wrap}
.opt button,.seg button{flex:1 1 0;min-width:64px;height:44px;border-radius:22px;border:2px solid var(--card-edge);background:var(--sky);color:var(--ink);font-weight:700;font-size:15px;cursor:pointer}
.opt button[aria-pressed="true"],.seg button[aria-pressed="true"]{background:var(--blue);color:#fff;border-color:var(--blue-edge)}
.seg{display:flex;gap:8px}
:root:not(.classic) .seg[data-key="palette"]{--k:var(--pink);--e:var(--pink-edge)}
:root:not(.classic) .seg[data-key="contrast"]{--k:var(--yellow);--e:var(--yellow-edge)}
:root:not(.classic) .seg[data-key="size"]{--k:var(--mint);--e:var(--mint-edge)}
:root:not(.classic) .seg[data-key="mode"]{--k:var(--lav);--e:var(--lav-edge)}
:root:not(.classic) .seg[data-key="theme"]{--k:var(--kblue);--e:var(--kblue-edge)}
:root:not(.classic) .seg button{background:var(--card);border:2px solid var(--k);box-shadow:0 4px 0 var(--k);color:var(--ink)}
:root:not(.classic) .seg button[aria-pressed="true"]{background:var(--k);border-color:var(--e);box-shadow:0 4px 0 var(--e);color:var(--ink)}
:root:not(.classic) .seg button:active{transform:translateY(3px)}
:root:not(.classic) .saved-item button[data-open]{background:var(--yellow)}
:root:not(.classic) .saved-item button[data-del]{background:var(--pink)}

.switch-row{display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:700}
.switch{position:relative;width:52px;height:30px;flex:none}
.switch input{position:absolute;inset:0;opacity:0;cursor:pointer;margin:0}
.switch span{position:absolute;inset:0;border-radius:15px;background:var(--card-edge);transition:background .2s;pointer-events:none}
.switch span::after{content:"";position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;transition:transform .2s}
.switch input:checked + span{background:var(--blue)}
.switch input:checked + span::after{transform:translateX(22px)}
.switch input:focus-visible + span{outline:3px solid var(--blue);outline-offset:3px}
.hint{font-size:14px;color:var(--ink-soft)}

.result{display:flex;flex-direction:column;gap:16px}
.chart-row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.legend{display:flex;flex-direction:column;gap:12px;min-width:0;flex:1 1 160px}
.legend .sw{width:14px;height:14px;border-radius:4px;margin-top:5px;flex:none}
.legend .item{display:flex;gap:8px}
.legend .lbl{font-size:14px;color:var(--ink-soft)}
.legend .val{font-weight:700;font-size:18px;font-variant-numeric:tabular-nums}
.say{display:flex;align-items:flex-end;gap:8px}
.bubble{flex:1;min-width:0;background:var(--sky);border-radius:18px 18px 18px 6px;padding:12px 14px;font-size:15px;line-height:1.45}
.gullu{flex:none}
.gullu.bounce{animation:hop .5s}
@keyframes hop{0%,100%{transform:translateY(0)}40%{transform:translateY(-10px)}}

.visual{border-radius:26px;padding:16px 18px;inset:0}
.visual.v-mint{background:var(--mint);box-shadow:0 6px 0 var(--mint-edge),inset 0 2px 0 var(--hi)}
.visual.v-lav{background:var(--lav);box-shadow:0 6px 0 var(--lav-edge),inset 0 2px 0 var(--hi)}
.visual.v-yellow{background:var(--yellow);box-shadow:0 6px 0 var(--yellow-edge),inset 0 2px 0 var(--hi)}
.visual h2{font-size:20px;font-weight:800}
.visual > p{margin:2px 0 12px;font-size:14px}
.trees{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;align-items:end;text-align:center}
.trees svg{display:block;margin:0 auto;transform-origin:50% 100%;transition:transform .5s cubic-bezier(.3,1.5,.5,1);max-width:100%}
.trees .yr{font-size:13px}
.trees .amt{font-weight:700;font-size:15px;font-variant-numeric:tabular-nums}
.bars{display:flex;flex-direction:column;gap:12px}
.bar-lbl{display:flex;justify-content:space-between;gap:8px;font-weight:700;font-size:15px;margin-bottom:4px}
.bar-lbl span:last-child{font-variant-numeric:tabular-nums}
.bar-track{height:22px;border-radius:11px;background:var(--track)}
.bar-fill{height:100%;border-radius:11px;transition:width .5s;min-width:6px}
.meter{position:relative;padding-top:34px}
.meter-pin{position:absolute;top:0;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;transition:left .5s cubic-bezier(.3,1.4,.5,1)}
.meter-pin span{background:var(--ink);color:var(--card);font-weight:800;font-size:13px;border-radius:8px;padding:0 6px;font-variant-numeric:tabular-nums}
.meter-bar{display:flex;height:22px;border-radius:11px;overflow:hidden;border:2px solid rgba(26,35,64,.25)}
.meter-key{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px 12px;margin-top:12px;font-size:14px;font-weight:700}
.meter-key span{display:flex;align-items:center;gap:6px;min-width:0}
.meter-key i{width:14px;height:14px;border-radius:4px;flex:none;border:1px solid rgba(26,35,64,.25)}
.meter-key small{font-weight:500;color:var(--ink-soft);font-variant-numeric:tabular-nums}
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.tile{background:var(--card);border-radius:18px;padding:10px 8px;text-align:center}
.tile .val{font-family:var(--display);font-weight:800;font-size:20px;line-height:1.1;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.tile .lbl{font-size:13px;color:var(--ink-soft)}

.tip{display:flex;flex-direction:column;gap:10px}
.tip h2{font-size:19px;font-weight:800}
.save-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.save{background:var(--mint);border-radius:18px;padding:10px 12px}
.save .lbl{font-size:13px;color:var(--mint-ink)}
.save .val{font-family:var(--display);font-weight:800;font-size:21px;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}

.actions{display:flex;flex-wrap:wrap;gap:14px 12px}
.actions .key{flex:1 1 180px}
.key{height:52px;border:none;border-radius:26px;padding:0 18px;font-weight:700;font-size:16px;white-space:nowrap;display:flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;text-decoration:none;color:var(--ink)}
.key.wa{background:var(--wa);color:#fff;box-shadow:0 6px 0 var(--wa-edge)}
.key.wa:hover{color:#fff;filter:brightness(1.06)}
.key.yellow{background:var(--yellow);box-shadow:0 6px 0 var(--yellow-edge)}
.key.pink{background:var(--pink);box-shadow:0 6px 0 var(--pink-edge)}
.key.blue{background:var(--blue);color:#fff;box-shadow:0 6px 0 var(--blue-edge)}
.key.red{background:var(--red);color:#fff;box-shadow:0 6px 0 var(--red-edge)}
.key.red:hover{filter:brightness(1.05)}
.key.small{height:40px;font-size:14px;padding:0 14px;box-shadow:0 4px 0 var(--card-edge);background:var(--sky)}

.learn{display:flex;flex-direction:column;gap:10px}
.learn h2{font-size:19px;font-weight:800}
.learn p{font-size:15px}
.badge{display:inline-flex;align-items:center;gap:6px;background:var(--mint);color:var(--mint-ink);border-radius:14px;padding:4px 12px;font-weight:700;font-size:14px;align-self:flex-start}
.note{font-size:13px;color:var(--ink-soft);text-align:center}
.updated{font-size:12px;color:var(--ink-soft);text-align:center}

/* Home */
.hero{display:flex;flex-direction:column;gap:14px}
.hero-say{display:flex;align-items:flex-end;gap:10px}
.hero-bubble{flex:1;background:var(--card);border-radius:20px 20px 20px 6px;padding:12px 14px;margin-bottom:18px}
.hero-bubble b{font-family:var(--display);font-size:19px;display:block;line-height:1.2}
.search{display:flex;align-items:center;gap:10px;height:52px;background:var(--card);border-radius:26px;padding:0 18px;box-shadow:inset 0 3px 0 rgba(26,35,64,.08)}
.search input{flex:1;min-width:0;border:none;outline:none;font-size:16px;background:transparent;color:var(--ink);-webkit-text-fill-color:var(--ink);color-scheme:light}
.groups{display:flex;flex-direction:column;gap:16px}
.hc{display:contents}
.ho1{order:1}.ho2{order:2}.ho3{order:3}.ho4{order:4}.ho5{order:5}
.learn-body{display:flex;flex-direction:column;gap:10px}
.note .updated{display:block;margin-top:4px}
.group{border-radius:26px;padding:16px;display:flex;flex-direction:column;gap:12px}
.group h2{font-size:22px;font-weight:800;display:flex;align-items:center;gap:8px}
.g-mint{background:var(--mint);box-shadow:0 7px 0 var(--mint-edge),inset 0 2px 0 var(--hi)}
.g-pink{background:var(--pink);box-shadow:0 7px 0 var(--pink-edge),inset 0 2px 0 var(--hi)}
.g-yellow{background:var(--yellow);box-shadow:0 7px 0 var(--yellow-edge),inset 0 2px 0 var(--hi)}
.g-lav{background:var(--lav);box-shadow:0 7px 0 var(--lav-edge),inset 0 2px 0 var(--hi)}
.tile-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.tile-link{display:flex;flex-direction:column;gap:2px;background:var(--card);border-radius:18px;padding:12px 14px;text-decoration:none;color:var(--ink);box-shadow:0 4px 0 rgba(26,35,64,.18);min-height:72px}
.tile-link b{font-size:17px;line-height:1.2}
.tile-link span{font-size:13px;color:var(--ink-soft);line-height:1.3}
.empty{text-align:center;color:var(--ink-soft);padding:12px}
.privacy{display:flex;align-items:center;flex-wrap:wrap;gap:6px 10px;background:var(--card);border-radius:20px;padding:12px 16px;font-size:14px}

/* Settings sheet */
.sheet-back{position:fixed;inset:0;background:rgba(26,35,64,.45);display:flex;align-items:flex-end;justify-content:center;z-index:15}
.sheet{background:var(--card);color:var(--ink);width:100%;max-width:440px;max-height:92%;overflow-y:auto;border-radius:28px 28px 0 0;padding:20px 18px calc(24px + env(safe-area-inset-bottom,0px));display:flex;flex-direction:column;gap:18px}
.sheet h2{font-size:22px;font-weight:800}
.sheet > *{flex-shrink:0}
.sheet .grp{display:flex;flex-direction:column;gap:8px}
.sheet .grp-name{font-weight:700}
.desi-id{background:var(--sky);border-radius:20px;padding:14px;display:flex;flex-direction:column;gap:10px}
.desi-id .row{display:flex;align-items:center;gap:10px}
.desi-id .avatar{width:46px;height:46px;border-radius:50%;background:#FFFFFF;display:grid;place-items:center;flex:none;box-shadow:0 0 0 3px #FCE3C2}
.desi-id b{font-size:17px}
.saved-list{display:flex;flex-direction:column;gap:8px}
.saved-item{display:flex;align-items:center;gap:8px;background:var(--sky);border-radius:16px;padding:8px 8px 8px 14px}
.saved-item .s-txt{flex:1;min-width:0;font-size:14px;line-height:1.3}
.saved-item .s-txt b{display:block;font-size:15px}
.saved-item button{height:36px;border:none;border-radius:18px;padding:0 12px;font-weight:700;cursor:pointer;background:var(--card);color:var(--ink)}

.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--card);padding:10px 18px;border-radius:20px;font-weight:700;font-size:14px;z-index:30;max-width:calc(100% - 32px);text-align:center}
#confetti{position:fixed;inset:0;pointer-events:none;width:100%;height:100%;z-index:20}


/* Basic calculator: candy keycaps */
.r1{--k:var(--pink);--e:var(--pink-edge)}
.r2{--k:var(--yellow);--e:var(--yellow-edge)}
.r3{--k:var(--mint);--e:var(--mint-edge)}
.r4{--k:var(--lav);--e:var(--lav-edge)}
.r5{--k:var(--kblue);--e:var(--kblue-edge)}
.basic-card{display:flex;align-items:center;gap:14px;background:var(--card);color:var(--ink);border-radius:26px;padding:14px 18px;text-decoration:none;box-shadow:0 6px 0 var(--card-edge)}
.basic-card:active{transform:translateY(3px)}
.mini-keys{display:grid;grid-template-columns:repeat(3,14px);gap:5px;flex:none}
.mini-keys i{width:14px;height:14px;border-radius:50%;background:var(--k);box-shadow:0 2px 0 var(--e)}
.bc-txt{flex:1;min-width:0;display:flex;flex-direction:column}
.bc-txt b{font-family:var(--display);font-size:20px;line-height:1.15}
.bc-txt span{font-size:14px;color:var(--ink-soft)}
.calc-body{background:var(--body);border-radius:36px;padding:16px 16px 22px;box-shadow:0 10px 0 var(--body-edge),inset 0 3px 0 var(--hi);width:100%;max-width:440px;margin-inline:auto;display:flex;flex-direction:column;gap:16px}
.b-top{display:flex;align-items:center;justify-content:space-between;gap:10px;padding-inline:4px}
.b-brand{font-family:var(--display);font-weight:800;font-size:14px;line-height:1.05;color:var(--ink)}
.solar{display:flex;gap:2px;background:#20242D;padding:3px;border-radius:6px;box-shadow:inset 0 2px 0 rgba(0,0,0,.4),0 2px 0 rgba(255,255,255,.35)}
.solar i{width:20px;height:16px;border-radius:2px;background:linear-gradient(135deg,#46506A,#262B36)}
.b-lcd{position:relative;background:var(--lcd);color:var(--lcd-ink);border-radius:20px;padding:12px 16px 10px;box-shadow:inset 0 5px 0 rgba(36,50,28,.18);text-align:right;min-height:124px;display:flex;flex-direction:column;justify-content:flex-end;gap:2px}
.b-expr{font-size:16px;font-weight:500;min-height:22px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}
.b-num{font-family:var(--display);font-weight:800;font-size:44px;line-height:1.05;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.b-words{font-size:14px;font-weight:700;min-height:20px}
.b-mem{position:absolute;left:14px;top:10px;font-weight:800;font-size:13px;background:var(--lcd-ink);color:var(--lcd);border-radius:6px;padding:0 6px}
.keys{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px 11px;padding:4px 2px 2px}
.ck{aspect-ratio:1;width:100%;max-width:100%;border:none;border-radius:50%;padding:0;background:var(--k);color:var(--ink);font-family:var(--display);font-weight:800;font-size:clamp(19px,5.6vw,25px);line-height:1;cursor:pointer;display:grid;place-items:center;
  box-shadow:0 6px 0 var(--e),inset 0 3px 0 var(--hi),inset 0 -4px 0 rgba(0,0,0,.06);transition:transform .06s,box-shadow .06s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.ck.st{font-size:clamp(14px,4vw,17px)}
.ck.eq{--k:var(--blue);--e:var(--blue-edge);color:#fff}
.ck:active,.ck.press{transform:translateY(5px);box-shadow:0 1px 0 var(--e),inset 0 3px 0 rgba(255,255,255,.4)}
.tape-panel{display:flex;flex-direction:column;gap:12px}
.tape{display:flex;flex-direction:column;gap:8px}
.tape-row{display:flex;justify-content:space-between;align-items:baseline;gap:10px;width:100%;border:none;background:var(--sky);color:var(--ink);border-radius:14px;padding:10px 14px;cursor:pointer;text-align:left;font-size:15px}
.tape-row span{min-width:0;overflow-wrap:anywhere;color:var(--ink-soft)}
.tape-row b{font-size:17px;white-space:nowrap;font-variant-numeric:tabular-nums}
@media (hover:none){.kbd-hint{display:none}}


/* ================= Classic look: calm, flat, one accent, no mascot or toy visuals ================= */
.classic .gullu,.classic .hero-say,.classic .visual.t-tree,.classic .visual.t-mountain,.classic .solar,.classic #confetti{display:none}
.classic .panel,.classic .machine,.classic .visual,.classic .group,.classic .basic-card,.classic .site-foot,.classic .calc-body,.classic .privacy,.classic .faq{box-shadow:none;border:1px solid var(--card-edge);border-radius:12px}
.classic .machine,.classic .calc-body,.classic .group,.classic .visual{background:var(--card)}
.classic .machine{padding:12px}
.classic .lcd,.classic .b-lcd{background:var(--lcd);color:var(--lcd-ink);box-shadow:none;border:1px solid var(--card-edge);border-radius:8px}
.classic .lcd .big,.classic .b-num{font-weight:700;letter-spacing:0}
.classic .group h2{font-size:19px}
.classic .group h2::before{content:"";width:10px;height:10px;border-radius:50%;background:var(--dot)}
.classic .g-mint{--dot:var(--mint-edge)} .classic .g-pink{--dot:var(--pink-edge)} .classic .g-yellow{--dot:var(--yellow-edge)} .classic .g-lav{--dot:var(--lav-edge)}
.classic .tile-link{background:var(--sky);box-shadow:none;border:1px solid transparent;border-radius:10px}
.classic .tile-link:hover{border-color:var(--blue);transform:none;box-shadow:none}
.classic .mini-keys i{background:var(--card-edge);box-shadow:none}
.classic .icon-btn,.classic .lang-btn{box-shadow:none;border:1px solid var(--card-edge);border-radius:10px}
.classic .key{box-shadow:none;border-radius:10px}
.classic .key.yellow,.classic .key.pink,.classic .key.small{background:var(--card);border:1px solid var(--card-edge)}
.classic .key.wa{box-shadow:none}
.classic .key.red{box-shadow:none}
.classic .key:active,.classic .icon-btn:active,.classic .lang-btn:active,.classic .tile-link:active{transform:none}
.classic .pill{background:var(--sky);border:1px solid var(--card-edge);border-radius:8px}
.classic .tag{background:var(--sky);border:1px solid var(--card-edge)}
.classic input[type=range]::-webkit-slider-thumb{background:var(--blue);box-shadow:none;border:3px solid #fff;outline:1px solid var(--blue-edge)}
.classic input[type=range]::-moz-range-thumb{background:var(--blue);box-shadow:none}
.classic .small-in input,.classic .date-in{background:var(--card);border:1px solid var(--card-edge);border-radius:8px}
.classic .bubble{border-radius:10px;background:var(--sky)}
.classic .save{background:var(--sky);border:1px solid var(--card-edge)}
.classic .save .lbl{color:var(--ink-soft)}
.classic .badge{background:var(--mint);border:1px solid var(--mint-edge)}
.classic .opt button{border-width:1px;border-radius:8px}
.classic .tiles .tile{border:1px solid var(--card-edge)}
.classic .faq details{border-radius:8px}
.classic .desi-id{border-radius:12px;border:1px solid var(--card-edge)}
.classic .seg button{border-width:1px;border-radius:8px}
.classic .grp-palette{display:none}
.classic .ck{--k:var(--ck);--e:var(--ck-e);border-radius:12px;aspect-ratio:auto;height:58px;box-shadow:none;border:1px solid var(--e);font-family:var(--text);font-weight:700}
.classic .ck.fn{--k:var(--ck-fn)}
.classic .ck.op{--k:var(--ck-op);--e:var(--ck-op-e);color:var(--blue)}
.classic .ck.eq{--k:var(--blue);--e:var(--blue-edge);color:#fff}
.classic .ck:active,.classic .ck.press{transform:none;box-shadow:none;filter:brightness(.94)}
.classic .b-top{justify-content:flex-start}
.classic #view.home .hero{display:block;padding:12px}
.classic .search{box-shadow:none;border:1px solid var(--card-edge);border-radius:10px;background:var(--sky)}

/* Phone: one column, sections ordered result-first */
#view{display:flex;flex-direction:column;gap:18px}
#view.calc .col-in,#view.calc .col-out{display:contents}
.o1{order:1}.o2{order:2}.o3{order:3}.o4{order:4}.o5{order:5}.o6{order:6}.o7{order:7}.o8{order:8}.o9{order:9}.o10{order:10}
#visual:empty,#tip:empty{display:none}

/* Tablet */
@media (min-width: 640px){
  .wrap{max-width:720px;padding-inline:24px}
  #view.home .home-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:start}
  #view.home .hc{display:flex;flex-direction:column;gap:16px;min-width:0}
  #view.home .empty{grid-column:1/-1}
}
/* Desktop / laptop: inputs on the left, results on the right */
@media (min-width: 960px){
  .wrap{max-width:1180px;padding-inline:32px;padding-block:20px 32px;gap:18px}
  #view{gap:18px}
  .brand .brand-txt{font-size:28px}
  .brand svg{width:48px;height:48px}
  #view.calc{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,6fr);gap:18px 20px;align-items:start}
  #view.calc > .calc-head,#view.calc > .actions,#view.calc > .learn,#view.calc > .note,#view.calc > .updated{grid-column:1/-1}
  #view.calc .col-in,#view.calc .col-out{display:flex;flex-direction:column;gap:18px;min-width:0}
  #view.calc .col-in .actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 12px}
  #view.calc .col-in .actions .wa{grid-column:1/-1}
  .learn-body{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 32px}
  .learn.in-col .learn-body{grid-template-columns:1fr;gap:10px}
  .note .updated{display:inline;margin:0 0 0 12px}
  .page-title{font-size:32px}
  .lcd{padding:18px 24px}
  .lcd .big{font-size:52px}
  .actions .key{flex:0 1 260px}
  .learn{padding:20px 24px}
  #view.home .hero{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:28px;padding:14px 28px}
  #view.home .hero-bubble{margin-bottom:10px}
  #view.home .hero-bubble b{font-size:24px}
  .search{height:60px}
  .search input{font-size:18px}
  #view.home .home-cols,#view.home .hc{gap:18px}
  #view.basic{display:grid;grid-template-columns:minmax(0,460px) minmax(0,1fr);gap:28px;align-items:start}
  #view.basic > .calc-head{grid-column:1/-1}
  #view.basic .calc-body{margin:0}
  .ck:hover{filter:brightness(1.04)}
  .group{padding:20px}
  .tile-link{transition:transform .15s, box-shadow .15s}
  .tile-link:hover{transform:translateY(-2px);box-shadow:0 6px 0 rgba(26,35,64,.2)}
  .key:hover,.icon-btn:hover{filter:brightness(1.05)}
  .sheet-back{align-items:center}
  .sheet{border-radius:28px;max-width:480px;max-height:86vh}
}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

/* Permanent side ad rails (wide desktop only). Ads never sit above or inside a calculator. */
.page{display:block}
.ad-rail{display:none}
@media (min-width: 1300px){
  .page{display:grid;grid-template-columns:160px minmax(0,1180px) 160px;gap:24px;justify-content:center;padding-inline:16px;align-items:start}
  .page > .wrap{max-width:none;width:100%;margin:0;padding-inline:0}
  .ad-rail{display:block;position:sticky;top:calc(24px + env(safe-area-inset-top,0px));padding-top:24px}
  .ad-slot{width:160px;height:600px;border-radius:18px;border:2px dashed var(--card-edge);background:var(--ad-bg);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;text-align:center;color:var(--ink-soft)}
  .ad-tag{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;background:var(--card);border-radius:8px;padding:2px 8px;color:var(--ink-soft)}
  .ad-size{font-family:var(--display);font-weight:800;font-size:20px;color:var(--ink);font-variant-numeric:tabular-nums}
  .ad-note{font-size:13px;line-height:1.3}
}
.classic .ad-slot{background:var(--card)}
.ad-slot.live{border:none;background:none}

/* site-only additions */
html,body{margin:0}
:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
.faq{display:flex;flex-direction:column;gap:10px}
.faq h2{font-size:19px;font-weight:800}
.faq-list{display:grid;gap:10px}
.faq details{background:var(--sky);border-radius:16px;padding:12px 16px}
.faq summary{font-weight:700;cursor:pointer;list-style-position:inside}
.faq details p{margin-top:8px;font-size:15px}
.prose{display:flex;flex-direction:column;gap:12px;font-size:16px}
.prose h2{font-size:20px;font-weight:800;margin-top:6px}
.prose ul{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px}
.prose a{color:var(--blue);font-weight:700}
.prose a.key{color:#fff}
.contact-mail{font-family:var(--display);font-size:22px;font-weight:800;overflow-wrap:anywhere}
.site-foot{display:flex;flex-direction:column;gap:14px;background:var(--card);border-radius:26px;padding:18px;font-size:14px}
.foot-cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px}
.foot-cols b{display:block;font-family:var(--display);font-size:16px;margin-bottom:4px}
.foot-cols a{display:block;color:var(--ink-soft);text-decoration:none;padding:3px 0}
.foot-cols a:hover{color:var(--blue)}
.foot-line{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 14px;color:var(--ink-soft);border-top:1px solid var(--sky);padding-top:12px}
.foot-line a{color:var(--blue);font-weight:700;text-decoration:none}
.gullu-404{display:flex;justify-content:center}
.classic .gullu-404{display:none}
.classic .faq details{background:var(--sky)}
@media (min-width:960px){
  .faq-list{grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}
  .foot-cols{grid-template-columns:repeat(5,minmax(0,1fr))}
  .prose{padding:24px 32px}
  .prose > p,.prose ul{max-width:80ch}
}