/* Učimo srpski — calm, adaptive learning workspace. */
:root{color-scheme:light;--bg:#f6f5f1;--card:#fff;--ink:#202521;--mute:#727872;--line:#e3e6df;--red:#b5423d;--blue:#28654c;--blue2:#28654c;--ok:#28654c;--okbg:#eaf2eb;--bad:#b5423d;--badbg:#fbedeb;--warn:#8d681d;--warnbg:#f8f2e4;--tile:#fff;--tileb:#dce1d9;--shadow:0 2px 6px #20252103;--sage:#eaf0e9}
html{scroll-padding-top:150px}
body{font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;letter-spacing:-.015em;-webkit-font-smoothing:antialiased;padding-left:246px;min-height:100dvh}
button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button,a,input,select{touch-action:manipulation}
[hidden]{display:none!important}
a{text-underline-offset:3px}
:focus-visible{outline:3px solid #48926d;outline-offset:4px}
.ui-icon{width:22px;height:22px;flex-shrink:0;vertical-align:middle}
.app-sidebar{position:fixed;inset:0 auto 0 0;width:246px;background:#fafaf7;border-right:1px solid var(--line);padding:32px 22px;z-index:25;display:flex;flex-direction:column}
.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);font-size:19px;font-weight:750;letter-spacing:-.04em}
.brand-mark{display:inline-grid;place-items:center;background:#28654c;color:#fff;font-weight:650;font-size:30px;line-height:1;width:46px;height:46px;border-radius:13px;flex-shrink:0;letter-spacing:0}
.brand small{display:block;color:var(--mute);font-size:8px;font-weight:650;letter-spacing:.15em;margin-top:4px;white-space:nowrap}
.app-sidebar nav{display:grid;gap:8px;margin-top:52px}.app-sidebar nav a{display:flex;gap:14px;align-items:center;color:#747a74;padding:13px 16px;border-radius:12px;text-decoration:none;font-weight:550}
.app-sidebar nav a.active{background:var(--sage);color:var(--blue);font-weight:650}
.sidebar-bottom{margin-top:auto;display:grid;gap:22px}.sidebar-account{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:14px}.sidebar-account small{display:block;font-size:12px;color:var(--mute)}
.install-link{display:flex;align-items:center;gap:9px;font-size:12px;color:var(--mute);padding:9px 0;border:0;background:none;cursor:pointer;text-align:left}.install-link .ui-icon{width:18px;height:18px}
header.top{background:#f6f5f1f2;color:var(--ink);border:0;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);padding-top:env(safe-area-inset-top)}
header.top .in{max-width:1160px;padding:23px 36px;gap:12px;min-height:80px}
header.top h1{font-size:15px;font-weight:550;color:var(--mute)}header.top h1 small{font-size:12px;color:var(--mute);margin-top:5px}
header.top a.back,header.top button{background:transparent;border:1px solid var(--line);border-radius:10px;color:var(--mute);font-size:13px;min-height:38px;display:inline-flex;align-items:center;justify-content:center;padding:7px 11px}
header.top a.back{border:0;padding-left:0}.install-top .ui-icon{width:18px;height:18px}
main{max-width:1160px;padding:20px 36px 100px}
h1,h2,h3{letter-spacing:-.045em;color:var(--ink)}h2{font-size:28px;font-weight:700;margin:0 0 18px}h3{font-size:19px;font-weight:650;line-height:1.3}
.muted{color:var(--mute);font-size:14px;line-height:1.6}
.card{border:1px solid var(--line);border-radius:18px;padding:26px;margin-bottom:20px;box-shadow:var(--shadow)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:12px;background:var(--blue2);color:#fff;border:1px solid transparent;border-radius:11px;font-size:15px;font-weight:650;padding:13px 22px;text-decoration:none;min-height:46px;transition:background .15s,transform .15s}
.btn:hover{background:#1e543e}.btn:active{transform:translateY(1px)}.btn.alt{background:transparent;color:var(--blue2);border:1px solid var(--tileb)}.btn.alt:hover{background:var(--sage)}.btn.sm{font-size:13px;padding:8px 13px;min-height:37px}
.bar{height:7px;background:#dbe2d9}.bar i{background:var(--blue2)}
.grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.tile-card{padding:24px;border-radius:14px;box-shadow:none}.tile-card .em{display:none}.tile-card b{font-weight:650}.tile-card .s{line-height:1.55}.tile-card.off{opacity:.65}
.badge{font-size:11px;background:var(--sage);top:20px;right:20px;padding:3px 8px}.badge.new,.newdot{background:var(--sage);color:var(--blue);font-size:10px;letter-spacing:.03em}.newdot{padding:2px 6px}
.mobile-nav{display:none}
.mobile-brand{display:none;align-items:center;gap:12px;color:var(--ink);font-weight:700;font-size:18px;text-decoration:none;white-space:nowrap;letter-spacing:-.04em}
.auth-page header.top .mobile-brand{margin-right:auto}
.home-heading h2{font-size:clamp(30px,3.4vw,48px);line-height:1.15;font-weight:730;margin-bottom:12px;letter-spacing:-.055em}.home-heading p{font-size:18px;color:var(--mute);margin:0 0 32px}
.home-layout{display:grid;grid-template-columns:minmax(0,1fr) 274px;gap:24px;align-items:start}.home-primary{min-width:0}
.continue-card{padding:30px;border-radius:19px;background:var(--sage);margin-bottom:30px}.eyebrow{font-size:11px;font-weight:650;letter-spacing:.15em;color:var(--mute);margin-bottom:14px}.continue-card h3{font-size:37px;letter-spacing:-.04em;margin:0 0 5px}.continue-card p{margin:0 0 24px;color:#6d756e;font-size:16px}.continue-progress{display:flex;align-items:center;gap:14px;margin-bottom:23px;font-size:12px;color:var(--mute)}.continue-progress .bar{flex:1}.continue-card .btn{min-width:200px;justify-content:space-between}
.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:15px;margin-bottom:15px}.section-heading h2{margin:0;font-size:25px}
#lessons{display:block;background:white;border:1px solid var(--line);border-radius:17px;overflow:hidden}
.lesson-row{display:flex;align-items:center;gap:16px;padding:19px 22px;color:var(--ink);text-decoration:none;border-bottom:1px solid var(--line);transition:background .15s}.lesson-row:last-child{border-bottom:0}.lesson-row[href]:hover{background:#f7faf6}.lesson-row.off{color:#7b817c}
.lesson-number{width:46px;height:46px;display:grid;place-items:center;border-radius:11px;background:var(--sage);color:var(--blue);font-size:20px;font-weight:650;flex-shrink:0}.off .lesson-number{background:#f0f1ed;color:#929890}
.lesson-copy{flex:1;min-width:0}.lesson-copy b{font-size:17px;font-weight:650;display:block;line-height:1.4}.lesson-copy small{font-size:12px;color:var(--mute);display:block;line-height:1.5;margin-top:3px}.lesson-status{display:flex;align-items:center;gap:7px;font-size:12px;color:var(--mute);flex-shrink:0}.lesson-status .ui-icon{width:18px;height:18px}.lesson-status.complete{color:var(--blue)}
.home-rail .card{padding:24px}.home-rail h3{font-size:19px}.goal-ring{width:130px;height:130px;margin:22px auto 15px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--blue) var(--angle),var(--line) 0);position:relative}.goal-ring:before{content:'';position:absolute;inset:11px;border-radius:50%;background:var(--card)}.goal-ring strong{position:relative;font-size:25px;letter-spacing:-.06em}.goal-ring small{font-weight:450;color:var(--mute);font-size:19px}.goal-caption{text-align:center;font-size:12px;color:var(--mute)}.streak-line{margin-top:20px;padding-top:17px;border-top:1px solid var(--line);font-size:13px;color:var(--blue);text-align:center;font-weight:550}.overview-value{font-size:37px;font-weight:700;letter-spacing:-.06em;margin:15px 0 0}.home-rail .bar{margin-top:20px}.home-note{margin-top:20px;font-size:12px}
.lesson-title{margin-bottom:28px}.lesson-title h2{font-size:37px;margin:4px 0 8px}.lesson-title p{margin:0;color:var(--mute);font-size:16px}.lesson-title .eyebrow{margin:0}.lesson-title .bar{width:200px;margin-top:20px}
nav.tabs{padding:0 36px;max-width:1160px;border-bottom:1px solid var(--line);gap:24px;scrollbar-width:none}nav.tabs a{padding:12px 0;color:var(--mute);opacity:1;font-size:14px;border-bottom:2px solid transparent}nav.tabs a.on{color:var(--blue);border-color:var(--blue);font-weight:650}
.exercise-list{display:block;background:white;border:1px solid var(--line);border-radius:16px;overflow:hidden}.exercise-row{display:flex;gap:16px;align-items:center;padding:20px 22px;border-bottom:1px solid var(--line);color:var(--ink);text-decoration:none}.exercise-row:last-child{border:0}.exercise-row:hover{background:#fafcf9}.exercise-symbol{width:40px;height:40px;display:grid;place-items:center;background:#f2f5ef;border-radius:10px;color:var(--mute);flex-shrink:0}.exercise-copy{flex:1;min-width:0}.exercise-copy b{display:block;font-size:16px;font-weight:650}.exercise-copy small{color:var(--mute);font-size:12px;display:block;margin-top:3px}.exercise-meta{font-size:12px;white-space:nowrap;color:var(--mute);display:flex;gap:10px;align-items:center}.exercise-meta .ui-icon{width:16px}.score-good{color:var(--blue);font-weight:650}.test-card{display:flex;align-items:center;gap:18px;background:var(--sage);margin-top:20px;border:0}.test-card .exercise-copy small{font-size:13px}
.daily{border-radius:14px;border-color:var(--line);padding:16px 18px}.daily .bar{height:6px}.daily .bar i{background:var(--blue)}.daily .dl b{font-size:13px}.daily .dl span{font-size:12px}.daily .dl .fire{color:var(--blue)}.daily .dm{font-size:12px}
.cheat table{font-size:15px}.cheat td,.cheat th{padding:12px 9px}.cheat .card{overflow-x:auto}.cheat .tip{background:#f0f3eb;border-left:2px solid #9eaf96;border-radius:0 10px 10px 0;padding:15px 17px;font-size:14px}.cheat h3{margin-bottom:17px}
.vocab td{padding:15px 8px;font-size:15px}.vocab td.e{display:none}.vocab td.s{font-weight:550}.vocab td.r{font-size:14px}.say{text-decoration:none}.say:hover{color:var(--blue);text-decoration:underline dotted}.spk{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;color:var(--mute);border:1px solid var(--line);background:white;margin-left:7px}.spk .ui-icon{width:18px;height:18px}.flash{min-height:300px}.flash .big{font-size:37px}.flash .em{display:none}
.runner{max-width:680px;margin:0 auto}.runner .top{margin-bottom:48px}.runner .top .cnt{font-size:12px}.runner .x{font-size:25px;min-width:44px;min-height:44px}.q-title{font-size:11px;letter-spacing:.1em;text-transform:uppercase;margin-bottom:14px}.q-prompt{font-size:27px;letter-spacing:-.035em;line-height:1.4;margin-bottom:25px;font-weight:600}.q-sub{font-size:15px;margin-top:-10px}.q-prompt .em{font-size:32px;margin-bottom:16px}.opt,.wt{border-width:1px;border-radius:11px;padding:15px 18px;box-shadow:none}.opt{font-size:17px}.opt:hover:not([disabled]){background:#f4f7f0}.wt{font-size:19px;min-height:50px}.wt:active{border-width:1px}.answer-zone .wt{background:var(--sage);border-color:#cddfd0}.answer-zone{min-height:90px;margin-bottom:30px;padding:12px 0 20px;border-bottom-width:1px}.bank{gap:10px;justify-content:flex-start}.answer-zone.lines{background:none;border-bottom:1px solid var(--line);min-height:125px}.opts{gap:13px}.match .opt{font-size:15px}.dlg{padding:16px 18px;background:#eef1eb;font-size:14px}.ol{border-width:1px}.sort-cats .cat{border-width:1px;padding:15px}.sheet{left:246px;background:#fafbf8;border-top:1px solid var(--line);padding:22px 36px calc(22px + env(safe-area-inset-bottom))}.sheet .in{max-width:680px}.sheet .msg{flex-basis:260px}.sheet .msg b{font-size:17px}.sheet .msg .ex{font-size:13px}.sheet .btn{min-width:180px}.sheet.ok{background:#eaf2e8}.sheet.no{background:#f9edeb}.result{padding:40px 28px}.result .big{font-size:62px}.exercise-focus nav.tabs{display:none}.exercise-focus header.top h1 small{display:none}.exercise-focus main{padding-top:30px;padding-bottom:220px}.exercise-focus .mobile-nav{display:none}
.auth-page,.offline-page{padding-left:0}.auth-page header.top .in{max-width:1100px}.auth-page header.top h1{display:none}.auth-page .mobile-brand{display:flex}.auth-page main{padding-top:30px}.auth-page .login{max-width:430px;margin:4vh auto 0;padding:34px}.auth-page .login h2{font-size:30px}.auth-page .login input{border-width:1px;padding:13px 15px;min-height:48px}.offline-page main{max-width:600px;padding-top:16vh}.offline-page h1{font-size:38px;line-height:1.15;margin-top:30px}
.stat{border-radius:16px!important;padding:20px!important}.stat b{letter-spacing:-.05em}.a.got{border-color:#abc5ad!important;box-shadow:none!important}.a .i{color:var(--blue)}.a .i .ui-icon{width:32px;height:32px}.a.off .i{filter:none}.week .d.part i{background:#a5b994}#goals .btn.on{outline:2px solid var(--blue);outline-offset:3px}
dialog{color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:22px;padding:32px;max-width:440px;width:calc(100% - 32px);box-shadow:0 20px 80px #15251b26}dialog::backdrop{background:#17271f66;backdrop-filter:blur(4px)}dialog h2{font-size:27px;margin-top:24px}dialog p{color:var(--mute);font-size:14px}.dialog-close{position:absolute;right:18px;top:18px;border:0;background:none;color:var(--mute);cursor:pointer;padding:7px}.install-steps{padding:18px;background:var(--sage);font-size:14px;border-radius:12px;line-height:1.7}.install-confirm{width:100%;margin-top:15px}.toast{bottom:28px;left:calc(50% + 123px);border:1px solid #c8d9c5;box-shadow:0 10px 40px #23352418;font-size:14px}
@media(min-width:1450px){main,header.top .in,nav.tabs{max-width:1250px}.home-layout{grid-template-columns:minmax(0,1fr) 300px;gap:32px}}
@media(max-width:1150px){body{padding-left:210px}.app-sidebar{width:210px;padding:28px 16px}.brand{font-size:16px;gap:9px}.brand small{font-size:7px}.brand-mark{width:39px;height:39px;font-size:26px}main{padding-left:26px;padding-right:26px}header.top .in{padding-left:26px;padding-right:26px}nav.tabs{padding-left:26px;padding-right:26px}.home-layout{grid-template-columns:minmax(0,1fr) 235px;gap:20px}.continue-card{padding:24px}.sheet{left:210px}.toast{left:calc(50% + 105px)}}
@media(max-width:960px){.home-layout{grid-template-columns:1fr}.home-rail{display:grid;grid-template-columns:1fr 1fr;gap:16px}.home-rail .card{margin:0}.home-rail{grid-row:2}.home-rail .goal-ring{width:100px;height:100px}.continue-card .btn{min-width:190px}.home-heading h2{font-size:34px}}
@media(max-width:760px){body{padding-left:0}.app-sidebar{display:none}.mobile-brand{display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:700;font-size:18px;text-decoration:none;white-space:nowrap;letter-spacing:-.04em}.mobile-brand .brand-mark{width:34px;height:34px;font-size:24px;border-radius:10px}header.top .in{padding:14px 20px;min-height:68px;gap:8px}header.top h1{font-size:13px;min-width:0}body:has(.home-heading) header.top h1{display:none}header.top .mobile-brand{margin-right:auto}header.top button,header.top a.back{font-size:11px;padding:7px 8px;min-height:36px}header.top #out{display:none}header.top #adm{display:none}header.top .install-top{display:none}header.top #scr{margin-left:auto}header.top #me{border:1px solid var(--line);border-radius:50%;width:36px;height:36px;padding:7px}.mobile-nav{position:fixed;display:flex;bottom:0;left:0;right:0;border-top:1px solid var(--line);background:#fafaf8ed;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:10px 20px calc(9px + env(safe-area-inset-bottom));z-index:24;gap:16px}.mobile-nav a{flex:1;display:flex;align-items:center;flex-direction:column;gap:4px;text-decoration:none;color:#818780;font-size:10px}.mobile-nav a[aria-current]{color:var(--blue);font-weight:600}.mobile-nav .ui-icon{width:24px;height:24px}main{padding:18px 20px 110px}.home-heading h2{font-size:32px;margin-bottom:10px;max-width:360px}.home-heading p{font-size:15px;margin-bottom:25px;max-width:330px}.home-layout{display:flex;flex-direction:column;gap:20px}.home-primary,.home-rail{width:100%}.home-rail{display:contents}.home-primary{display:contents}.continue-card{order:0;width:100%;margin:0;padding:25px 22px}.continue-card h3{font-size:32px}.continue-card p{font-size:14px;margin-bottom:23px}.continue-card .btn{width:100%;padding:14px 18px}.continue-progress{font-size:11px;gap:10px}.eyebrow{font-size:10px;letter-spacing:.13em}#daily{order:1;width:100%}#daily .card{margin:0;padding:20px;display:grid;grid-template-columns:74px 1fr;column-gap:17px;align-items:center}#daily h3{font-size:17px;margin:0;grid-column:2;grid-row:1}#daily .goal-ring{grid-column:1;grid-row:1/4;margin:0;width:74px;height:74px}#daily .goal-ring:before{inset:7px}#daily .goal-ring strong{font-size:19px}#daily .goal-ring small{font-size:14px}#daily .goal-caption{grid-column:2;text-align:left;font-size:11px}#daily .streak-line{grid-column:2;margin:4px 0 0;border:0;padding:0;text-align:left;font-size:11px}.home-rail #overview{display:none}.home-primary .section-heading{order:2;width:100%;margin:7px 0 -6px}.section-heading h2{font-size:24px}#lessons{order:3;width:100%}.lesson-row{padding:17px 16px;gap:14px}.lesson-copy b{font-size:16px}.lesson-copy small{font-size:11px}.lesson-number{width:41px;height:41px;font-size:18px}.lesson-status{font-size:11px}.home-note{font-size:11px}.card{padding:20px;border-radius:16px}nav.tabs{gap:23px;padding:0 20px}nav.tabs a{font-size:12px;padding:11px 0}.lesson-title{margin:0 0 25px}.lesson-title h2{font-size:32px}.lesson-title p{font-size:14px}.lesson-title .bar{width:140px;margin-top:16px}.exercise-row{padding:17px 15px;gap:12px}.exercise-symbol{width:34px;height:34px}.exercise-symbol .ui-icon{width:19px}.exercise-copy b{font-size:14px}.exercise-copy small{font-size:11px}.exercise-meta{font-size:11px}.exercise-meta .exercise-count{display:none}.test-card{padding:18px;gap:12px}.test-card .btn{font-size:12px;padding:10px 14px;min-height:40px}.test-card .exercise-symbol{display:none}.test-card .exercise-copy small{font-size:11px}.grid{grid-template-columns:1fr}.cheat table{font-size:13px;min-width:300px}.cheat td,.cheat th{padding:10px 7px}.cheat h3{font-size:17px}.cheat .tip{font-size:13px}.vocab td{font-size:14px;padding:14px 5px}.vocab td.r{font-size:13px}.vocab td.r .n{font-size:11px}.card .row{gap:8px}.card .row h3{font-size:17px}.sheet{left:0;padding:18px 20px calc(18px + env(safe-area-inset-bottom))}.sheet .msg{flex:1 1 200px}.sheet .btn{flex:1;min-width:150px}.sheet .msg .cor{font-size:15px}.sheet .msg .ex{font-size:12px}.exercise-focus header.top{display:none}.exercise-focus main{padding-top:calc(16px + env(safe-area-inset-top));padding-bottom:240px}.runner .top{margin-bottom:40px}.q-prompt{font-size:25px}.q-title{font-size:10px}.wt{font-size:18px;padding:12px 16px}.opt{font-size:16px;padding:16px}.flash .big{font-size:31px}.daily .dl{flex-wrap:wrap;gap:7px}.daily .dl .fire{font-size:11px}.toast{left:50%;bottom:95px}.exercise-focus .toast{bottom:160px}.auth-page .login{margin:3vh auto 0;padding:25px}.auth-page .login h2{font-size:27px}.auth-page .mobile-brand{display:flex}.auth-page .install-top{display:inline-flex}.auth-page main{padding-top:15px}.offline-page main{padding:18vh 25px 30px}.offline-page h1{font-size:31px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.profile-install{display:flex;gap:18px;align-items:center;justify-content:space-between;background:var(--sage)}.profile-install h3{margin-bottom:4px}.profile-install p{margin:0}.profile-install .btn{white-space:nowrap}header.top #adm[hidden]{display:none!important}
@media(max-width:760px){.profile-install{align-items:stretch;flex-direction:column;gap:13px}.profile-install h3{font-size:18px}.profile-install p{font-size:12px}.profile-install .btn{align-self:flex-start}body:has(#who) header.top #out{display:inline-flex}header.top #adm:not([hidden]){display:inline-flex}body:has(#adm:not([hidden])) header.top #me{display:none}}

/* KnT mark v1: one shared asset for navigation and install surfaces. */
.brand-mark{overflow:hidden}.brand-mark img{display:block;width:100%;height:100%;object-fit:cover}

/* Public signup and one-time credentials. */
.auth-support{border-top:1px solid var(--line);padding-top:16px;font-size:12px}.auth-recovery{border-top:1px solid var(--line);padding-top:16px;margin-top:18px;font-size:13px}.auth-recovery summary{cursor:pointer;color:var(--blue)}.credentials input[readonly]{font-family:ui-monospace,SFMono-Regular,monospace;font-size:17px;letter-spacing:.03em}.credentials-confirm{display:flex!important;align-items:center;gap:10px;margin-top:24px!important;color:var(--ink)!important;font-size:13px!important}.credentials-confirm input{width:18px!important;min-height:18px!important;height:18px;flex-shrink:0;accent-color:var(--blue)}.credentials #copy-status{font-size:12px;min-height:18px}.credentials #created-title:focus{outline:none}.auth-page .credentials{max-width:460px}.credentials .btn{white-space:normal}