@font-face{font-family:Arabic;src:url('/fonts/Arabic-400.woff2') format('woff2');font-weight:400;font-display:swap}
@font-face{font-family:Arabic;src:url('/fonts/Arabic-700.woff2') format('woff2');font-weight:700;font-display:swap}
/* Цвета материала урока — как в рабочем кабинете (lesson.css). Тема меняет фон и интерфейс. */
:root{--ink:#172337;--paper:#f5f1e8;--muted:#bcc8d8;--blue:#d1e1fa;--green:#b9e1d9;--sand:#ebd3b4;--violet:#d9cdef;--pink:#eebeb6;--lime:#dee5ac;--line:#526075}
html[data-theme="night"]{color-scheme:dark;--bg:#11161F;--bg-show:#0E131B;--surf:#1A2230;--surf2:#222C3E;--surf3:#161D29;--ln:#263044;--ln2:#3A4660;--tx:#EEF1F5;--tx2:#C9D2DE;--mu:#A9B3C1;--acc:#F2B544;--acc-tx:#F2B544;--rec:#E25A45;--bar:#0D1219;--pill:rgba(13,18,25,.82);--ok-bg:#1E3424;--ok-fg:#A9DDB2;--warn-bg:#3A2F17;--warn-fg:#F2D08A;--bad-bg:#3A2320;--bad-fg:#F3B8AA}
html[data-theme="day"]{color-scheme:light;--paper:#172337;--muted:#4d5d71;--line:#8796a7;--bg:#F4F6F9;--bg-show:#FBFAF7;--surf:#FFFFFF;--surf2:#FFF4DA;--surf3:#FFFFFF;--ln:#DDE3EA;--ln2:#C3CCD7;--tx:#141A22;--tx2:#2E3845;--mu:#4F5A68;--acc:#F2B544;--acc-tx:#7A4E00;--rec:#C8402D;--bar:#FFFFFF;--pill:rgba(255,255,255,.9);--ok-bg:#DFEBDD;--ok-fg:#2C5733;--warn-bg:#FFF1D6;--warn-fg:#6B4A12;--bad-bg:#F4E1DA;--bad-fg:#7A2E22}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
body.show{background:var(--bg-show)}
a{color:var(--acc-tx)}
button,input{font:inherit}
.wrap{max-width:720px;margin:0 auto;padding:12px 16px 32px;display:flex;flex-direction:column;gap:16px}
.page{min-height:100vh;display:flex;flex-direction:column}
.top{display:flex;justify-content:space-between;align-items:center;gap:10px;min-height:48px}
.brand{font-size:14px;font-weight:700;letter-spacing:.16em;color:var(--tx2);text-decoration:none}
.top-actions{display:flex;gap:8px;align-items:center}
.btn{min-height:44px;padding:0 16px;border-radius:12px;border:1px solid var(--ln2);background:var(--surf);color:var(--tx);font-weight:600;font-size:15px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#11161F}
.btn.ghost{background:transparent;border-color:var(--acc-tx);color:var(--acc-tx)}
.btn.danger{background:transparent;border-color:var(--rec);color:var(--rec)}
.btn.rec{background:var(--rec);border:0;color:#fff;min-height:56px;font-size:18px;width:100%;border-radius:16px}
.btn.small{min-height:40px;padding:0 12px;font-size:14px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.back{display:inline-flex;align-items:center;gap:6px;min-height:44px;color:var(--acc-tx);text-decoration:none;font-weight:500;background:none;border:0;padding:0;cursor:pointer;font-size:16px}
h1{margin:0;font-size:28px;line-height:1.2}
h2{margin:0;font-size:20px}
.mu{color:var(--mu)}.tx2{color:var(--tx2)}
.card{background:var(--surf);border:1px solid var(--ln);border-radius:16px;padding:16px;display:flex;flex-direction:column;gap:10px}
.label{margin:0;font-size:13px;letter-spacing:.08em;text-transform:uppercase;color:var(--mu);font-weight:600}
.chip{display:inline-block;font-size:13px;font-weight:600;padding:3px 10px;border-radius:999px;background:var(--ok-bg);color:var(--ok-fg)}
.chip.warn{background:var(--warn-bg);color:var(--warn-fg)}.chip.bad{background:var(--bad-bg);color:var(--bad-fg)}.chip.plain{background:var(--surf2);color:var(--tx2)}
input[type=email],input[type=search],input[type=text],input[inputmode=numeric]{width:100%;min-height:52px;border-radius:14px;border:1px solid var(--ln2);background:var(--surf);color:var(--tx);padding:0 16px;font-size:17px}
input:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid var(--acc);outline-offset:2px}
.continue{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:#11161F;background:var(--acc);border-radius:18px;padding:18px}
.continue b{font-size:21px;line-height:1.25}
.seg{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:4px;padding:4px;background:var(--surf);border:1px solid var(--ln);border-radius:14px}
.seg button{min-height:44px;border:0;border-radius:10px;background:transparent;color:var(--tx2);font-weight:600;cursor:pointer}
.seg button[aria-selected=true],.seg button[aria-pressed=true]{background:var(--acc);color:#11161F}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.tile{display:flex;flex-direction:column;gap:4px;min-height:110px;padding:14px;border-radius:14px;background:var(--surf);border:1px solid var(--ln);color:var(--tx);text-decoration:none}
.tile b{font-size:26px;color:var(--acc-tx)}
.list{display:flex;flex-direction:column;gap:8px}
.row{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--surf);border:1px solid var(--ln);color:var(--tx);text-decoration:none}
.row .code{font-weight:700;font-size:17px;color:var(--acc-tx);width:44px;flex:0 0 auto}
.row .t{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}
.row .t span{font-size:13px;color:var(--mu)}
.results{background:var(--surf);border:1px solid var(--ln);border-radius:14px;overflow:hidden}
.results .row{border:0;border-radius:0;border-bottom:1px solid var(--ln)}
.step{background:var(--surf3);border:1px solid var(--ln);border-radius:16px;overflow:hidden}
.step>summary{list-style:none;cursor:pointer;min-height:60px;padding:14px 16px;display:flex;gap:12px;align-items:center}
.step>summary::-webkit-details-marker{display:none}
.step>summary .n{width:32px;height:32px;border-radius:50%;background:var(--acc);color:#11161F;display:flex;align-items:center;justify-content:center;font-weight:700;flex:0 0 auto}
.step>summary .st{flex:1;display:flex;flex-direction:column}.step>summary .st b{font-size:18px}.step>summary .st span{font-size:14px;color:var(--mu)}
.step>summary::after{content:'+';color:var(--acc-tx);font-size:22px}.step[open]>summary::after{content:'−'}
.step .body{padding:0 12px 14px;display:flex;flex-direction:column;gap:10px}
.pre{white-space:pre-line;margin:0;font-size:16px;line-height:1.55}
ol.crit{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:8px}
.places div{display:flex;gap:10px;padding:8px 10px;border-radius:10px;background:var(--surf2);font-size:15px}
.places b{flex:0 0 140px}
.file{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:14px;background:var(--surf);border:1px solid var(--ln)}
.file .t{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0;overflow-wrap:anywhere}
.notice{padding:12px 14px;border-radius:12px;background:var(--warn-bg);color:var(--warn-fg);font-size:15px;line-height:1.45}
.notice ul{margin:6px 0 0;padding-left:20px}
.recbar{position:sticky;bottom:0;margin-top:auto;background:var(--bar);border-top:1px solid var(--ln);padding:12px 16px calc(16px + env(safe-area-inset-bottom))}
.recbar>div{max-width:688px;margin:0 auto}
.tabbar{position:sticky;bottom:0;margin-top:auto;background:var(--bar);border-top:1px solid var(--ln);display:flex;padding:6px 12px calc(10px + env(safe-area-inset-bottom))}
.tabbar a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:52px;text-decoration:none;color:var(--mu);font-size:13px;font-weight:600}
.tabbar a[aria-current=page]{color:var(--acc-tx)}
.sheet{background:var(--surf);border:1px solid var(--ln2);border-radius:18px;padding:18px;display:flex;flex-direction:column;gap:12px}
.sizes button{display:flex;flex-direction:column;align-items:center;gap:2px;min-height:64px}
.sizes .ar{font-family:Arabic,serif;line-height:1.2}
/* Материал урока */
.lesson-material{color:var(--ink)}
.lesson-material .missing-file{display:inline-block;margin:6px 0;padding:10px 12px;border:1px dashed #9b652c;border-radius:10px;background:#f3e7cf;color:#5a3d0e;font:600 14px/1.4 system-ui,sans-serif;direction:ltr;text-align:left;white-space:normal}
.lesson-material img{max-width:100%;height:auto}
.lesson-material .lesson-heading,.lesson-material h1,.lesson-material h2,.lesson-material h3{color:inherit}
.lesson-material>*:first-child{margin-top:0}
.preview .lesson-material{zoom:.72}
/* Чистый показ */
.show-root{max-width:960px;margin:0 auto;padding:20px 14px 120px}
.show-root h1{font-size:24px;margin:0 0 14px;color:var(--tx)}
.show-root[data-size="M"] .lesson-material{zoom:.85}
.show-root[data-size="L"] .lesson-material{zoom:1}
.show-root[data-size="XL"] .lesson-material{zoom:1.15}
.show-root .end{text-align:center;color:var(--mu);margin:24px 0 0}
.exit-pill{position:fixed;right:max(14px,env(safe-area-inset-right));bottom:calc(14px + env(safe-area-inset-bottom));z-index:5;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:0 16px;border-radius:999px;background:var(--pill);border:1px solid var(--ln2);color:var(--tx);font-weight:600;font-size:15px;cursor:pointer;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.exit-pill i{width:10px;height:10px;border-radius:2px;background:var(--rec)}
body.show-pending .show-root{visibility:hidden}
/* Панель владельца */
.people{width:100%;border-collapse:collapse;font-size:15px}
.people td,.people th{padding:10px 8px;border-bottom:1px solid var(--ln);text-align:left;vertical-align:top}
.people .acts{display:flex;flex-wrap:wrap;gap:6px}
.tablewrap{overflow-x:auto}
.toast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(84px + env(safe-area-inset-bottom));background:var(--tx);color:var(--bg);padding:10px 16px;border-radius:12px;font-size:15px;z-index:9;max-width:90vw}
.center{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.center .card{max-width:420px;width:100%}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
@media (max-width:420px){.places b{flex-basis:110px}h1{font-size:25px}}

.person{padding:12px;border-radius:12px;background:var(--surf2);display:flex;flex-direction:column;gap:6px}
.person-head{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:space-between}
.person-head b{overflow-wrap:anywhere}
.acts{display:flex;flex-wrap:wrap;gap:6px}

html[data-theme="night"] .lesson-material{color:var(--tx)}
/* Цвета карточек из style.css рабочего кабинета */
.lesson-material .blue{background:var(--blue)}.lesson-material .green{background:var(--green)}.lesson-material .sand{background:var(--sand)}.lesson-material .violet{background:var(--violet)}.lesson-material .pink{background:var(--pink)}.lesson-material .lime{background:var(--lime)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}