/* Рабочая тетрадь ШЮМ3 — стили. Палитра из гайдлайна Школы Юного Моряка
   (дизайн-версия тетради): синий #3383B3, голубые плашки #DAE6F1, кремовые врезки #F8F5DB.
   Заголовочный шрифт гайдлайна — Intro Black; в вебе заменен на Rubik 800 (свободная лицензия). */

@font-face{font-family:"Roboto";font-weight:400;font-display:swap;src:url(fonts/roboto-cyrillic-400-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Roboto";font-weight:400;font-display:swap;src:url(fonts/roboto-latin-400-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122,U+2190-21FF,U+2212,U+2215}
@font-face{font-family:"Roboto";font-weight:500;font-display:swap;src:url(fonts/roboto-cyrillic-500-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Roboto";font-weight:500;font-display:swap;src:url(fonts/roboto-latin-500-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122,U+2190-21FF,U+2212,U+2215}
@font-face{font-family:"Roboto";font-weight:700;font-display:swap;src:url(fonts/roboto-cyrillic-700-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Roboto";font-weight:700;font-display:swap;src:url(fonts/roboto-latin-700-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122,U+2190-21FF,U+2212,U+2215}
@font-face{font-family:"Rubik";font-weight:800;font-display:swap;src:url(fonts/rubik-cyrillic-800-normal.woff2) format("woff2");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}
@font-face{font-family:"Rubik";font-weight:800;font-display:swap;src:url(fonts/rubik-latin-800-normal.woff2) format("woff2");unicode-range:U+0000-00FF,U+2000-206F,U+20AC,U+2122,U+2190-21FF,U+2212,U+2215}

:root{
  --blue:#3383B3; --blue-deep:#1F5F87; --sky:#DAE6F1; --cream:#F8F5DB; --knot:#F6EDB0;
  --bg:#FFFFFF; --page:#F4F8FB; --surface:#FFFFFF; --ink:#1B1B1B; --text:#262B31; --muted:#5D6873;
  --line:#CFDDE8; --field:#F4F8FB; --done:#2E7D55; --done-bg:#E3F2EA; --err:#B3261E;
  --wave1:#3383B3; --wave2:#7FB3D5; --wave3:#BFD9EA;
  box-sizing:border-box;
  padding-top:env(safe-area-inset-top,0px);
  padding-bottom:env(safe-area-inset-bottom,0px);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --blue:#6FB0DC; --blue-deep:#9BC9E8; --sky:#17324A; --cream:#2E2A17; --knot:#3A3413;
    --bg:#0D1620; --page:#0D1620; --surface:#14212E; --ink:#EEF3F7; --text:#D6DEE6; --muted:#98A6B3;
    --line:#274055; --field:#0F1B26; --done:#7FCBA2; --done-bg:#163325; --err:#FF8A80;
    --wave1:#2B6E97; --wave2:#1F506F; --wave3:#173B53;
  }
}
:root[data-theme="dark"]{
  --blue:#6FB0DC; --blue-deep:#9BC9E8; --sky:#17324A; --cream:#2E2A17; --knot:#3A3413;
  --bg:#0D1620; --page:#0D1620; --surface:#14212E; --ink:#EEF3F7; --text:#D6DEE6; --muted:#98A6B3;
  --line:#274055; --field:#0F1B26; --done:#7FCBA2; --done-bg:#163325; --err:#FF8A80;
  --wave1:#2B6E97; --wave2:#1F506F; --wave3:#173B53;
}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 70px);-webkit-text-size-adjust:100%}
*,*::before,*::after{box-sizing:inherit}
body{margin:0;background:var(--page);color:var(--text);font-family:"Roboto",-apple-system,"Segoe UI",Arial,sans-serif;font-size:17px;line-height:1.55}
img{max-width:100%;height:auto;display:block}
a{color:var(--blue)}
button,input,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}
.wrap{max-width:680px;margin:0 auto;padding:0 16px}
.display{font-family:"Rubik","Roboto",Arial,sans-serif;font-weight:800;text-transform:uppercase;letter-spacing:.01em;line-height:1.08}

/* волны гайдлайна */
.waves{display:block;width:100%;height:46px}
.waves path:nth-child(1){fill:var(--wave3)} .waves path:nth-child(2){fill:var(--wave2)} .waves path:nth-child(3){fill:var(--wave1)}

/* ---------- вход по коду ---------- */
html,body{height:100%}
body.gate{background:var(--bg)}
body.gate #app{min-height:100%;display:flex;flex-direction:column}
.gate main{flex:1;width:100%;display:flex;flex-direction:column;justify-content:center;padding-top:40px;padding-bottom:30px}
.gate .school{color:var(--blue);font-weight:700;font-size:15px;margin:0 0 10px}
.gate h1{font-size:34px;color:var(--ink);margin:0 0 14px}
.gate p{color:var(--muted);margin:0 0 22px}
.gate label{display:block;font-weight:700;color:var(--ink);margin-bottom:8px}
.gate .code-input{font-size:24px;letter-spacing:.06em;text-transform:uppercase;text-align:center}
.gate .btn{width:100%;margin-top:12px;padding:15px}
.gate .msg{min-height:24px;margin-top:10px;font-size:15px;color:var(--err)}

/* ---------- Мой рейс ---------- */
.hero{background:var(--bg);padding:22px 0 0}
.hero .school{color:var(--blue);font-weight:700;font-size:14px}
.hero h1{margin:6px 0 4px;font-size:36px;color:var(--ink)}
.hero p{margin:0;color:var(--muted)}
.strip{display:block;width:100%;height:auto;margin:18px 0 6px}
.strip .rt{stroke:var(--wave3);stroke-width:3;fill:none}
.strip .rt-smp{stroke:var(--wave2);stroke-width:3;stroke-dasharray:6 5;fill:none}
.strip .rt-done{stroke:var(--blue);stroke-width:3.5;fill:none;stroke-linecap:round}
.strip .port{fill:var(--bg);stroke:var(--blue);stroke-width:2}
.strip .ship{fill:var(--blue)}
.strip text{fill:var(--muted);font-size:11px;font-family:inherit}
.hero-stat{font-size:15px;color:var(--muted);padding-bottom:6px}
.hero-stat b{color:var(--ink)}

.hint{margin:16px 0 0;padding:14px 16px;border-radius:14px;background:var(--cream);font-size:15px}
.hint b{color:var(--ink)}
.linkbtn{background:none;border:0;padding:6px 0 0;color:var(--blue);font-weight:700;cursor:pointer}

.voyage{list-style:none;margin:18px 0 0;padding:0;position:relative}
.voyage::before{content:"";position:absolute;left:15px;top:20px;bottom:20px;width:2px;background:var(--line)}
.leg{position:relative;padding:0 0 0 44px;margin:0 0 8px}
.leg .dot{position:absolute;left:6px;top:18px;width:20px;height:20px;border-radius:50%;background:var(--page);border:2px solid var(--line)}
.leg.is-progress .dot{border-color:var(--blue);background:linear-gradient(90deg,var(--blue) 50%,var(--page) 50%)}
.leg.is-done .dot{border-color:var(--done);background:var(--done)}
.leg-link{display:block;padding:11px 14px;border-radius:14px;text-decoration:none;color:inherit}
a.leg-link{background:var(--surface);border:1px solid var(--line)}
a.leg-link:active{background:var(--sky)}
.leg-num{font-size:13px;color:var(--muted)}
.leg-title{display:block;font-weight:700;color:var(--ink);line-height:1.3}
.leg-status{display:block;font-size:14px;color:var(--muted);margin-top:2px}
.leg.is-done .leg-status{color:var(--done)}
.leg.is-locked .leg-title{color:var(--muted);font-weight:500}

.settings{margin:28px 0 20px}
.settings h2{font-size:18px;color:var(--blue);margin:0 0 12px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:12px}
.card h3{margin:0 0 4px;font-size:16px;color:var(--ink)}
.card p{margin:0 0 10px;font-size:15px;color:var(--muted)}
.card .val{font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.04em}
.btn{display:inline-block;border:0;border-radius:12px;padding:12px 18px;background:var(--blue);color:#fff;font-weight:700;cursor:pointer;text-decoration:none;text-align:center}
.btn[disabled]{opacity:.55;cursor:default}
.btn-quiet{background:transparent;color:var(--blue);border:1.5px solid var(--line)}
.btn-danger{background:transparent;color:var(--err);border:1.5px solid var(--line)}
.row{display:flex;gap:8px;flex-wrap:wrap}

/* ---------- занятие ---------- */
.bar{position:sticky;top:env(safe-area-inset-top,0px);z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}
.bar-in{display:flex;align-items:center;gap:10px;min-height:54px}
.back{display:inline-flex;align-items:center;gap:4px;text-decoration:none;font-weight:700;color:var(--blue);padding:8px 4px 8px 0;white-space:nowrap}
.bar-title{flex:1;min-width:0;font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.saved{font-size:13px;color:var(--muted);white-space:nowrap}
.progress{height:4px;background:var(--line)}
.progress i{display:block;height:100%;background:var(--done);width:0;transition:width .3s}

.lesson-head{background:var(--bg);padding:26px 0 0}
.lesson-head .kicker{font-weight:700;color:var(--blue);font-size:15px}
.lesson-head h1{margin:6px 0 10px;font-size:30px;color:var(--ink)}
.toc{display:flex;gap:8px;overflow-x:auto;padding:4px 0 14px;scrollbar-width:none}
.toc::-webkit-scrollbar{display:none}
.toc a{flex:none;font-size:14px;text-decoration:none;color:var(--blue);background:var(--sky);border-radius:999px;padding:6px 12px;white-space:nowrap}
.toc a.is-done{background:var(--done-bg);color:var(--done)}

.sec{margin:18px 0;padding:18px 16px 20px;border-radius:18px;background:var(--surface);border:1px solid var(--line)}
.sec-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:700;padding:3px 11px;border-radius:999px}
.badge--theory{background:var(--sky);color:var(--blue-deep)}
.badge--task{background:var(--knot);color:var(--ink);border:1.5px dashed var(--blue)}
.badge--done{background:var(--done-bg);color:var(--done);border:0}
.badge--ctrl{background:transparent;color:var(--blue-deep);border:1.5px solid var(--blue)}
.sec h2{margin:12px 0 10px;font-size:23px;color:var(--blue)}
.sec h3{margin:20px 0 8px;font-size:18px;line-height:1.3;color:var(--ink)}
.sec p{margin:0 0 12px}
.sec ul,.sec ol{margin:0 0 12px;padding-left:22px}
.sec li{margin:0 0 6px}
.sec li::marker{color:var(--blue);font-weight:700}

dl.gloss{margin:0;background:var(--sky);border-radius:14px;padding:14px 16px}
.gloss dt{font-weight:700;color:var(--ink);margin-top:12px}
.gloss dt:first-child{margin-top:0}
.gloss dd{margin:2px 0 0}
.note{background:var(--cream);border-radius:14px;padding:14px 16px;margin:0 0 14px}

.tbl{overflow-x:auto;margin:0 0 14px;border:1px solid var(--line);border-radius:12px}
.tbl table{border-collapse:collapse;width:100%;font-size:15px}
.tbl th,.tbl td{padding:9px 10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}
.tbl th{background:var(--sky);color:var(--ink)}
.tbl tr:last-child td{border-bottom:0}
.tbl td:first-child{font-weight:500;color:var(--ink)}

figure{margin:14px 0 16px}
.fig-btn{display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;cursor:zoom-in}
figcaption{font-size:14px;color:var(--muted);margin-top:6px}
.zoom-hint{font-size:13px;color:var(--blue)}

.variants{display:grid;grid-template-columns:1fr;gap:10px;margin:6px 0 4px}
@media (min-width:520px){.variants{grid-template-columns:repeat(3,1fr)}}
.variant{border:1px solid var(--line);border-radius:14px;padding:10px;background:#fff;color:#1B1B1B}
.variant .fig-btn{border:0;border-radius:8px}
.variant img{max-height:200px;width:auto;margin:0 auto;object-fit:contain}
@media (min-width:520px){.variant img{max-height:150px}}
.variant b{display:block;margin-top:6px;font-size:15px}

.field{margin:14px 0 0}
.field > label, .field legend{display:block;font-size:16px;font-weight:700;color:var(--ink);margin:0 0 8px;padding:0}
.field .num{color:var(--blue)}
textarea,input[type=text]{width:100%;border:1.5px solid var(--line);border-radius:12px;background:var(--field);padding:11px 12px;font-size:17px;line-height:1.45}
textarea{resize:none;min-height:90px;overflow:hidden}
textarea:focus,input[type=text]:focus{border-color:var(--blue);outline:none;background:var(--surface)}
fieldset{border:0;padding:0;margin:0;min-width:0}
.choices{display:grid;gap:8px}
.choice,.check{display:flex;gap:12px;align-items:center;border:1.5px solid var(--line);border-radius:12px;padding:12px 14px;cursor:pointer;background:var(--field)}
.choice input,.check input{margin:0;width:22px;height:22px;accent-color:var(--blue);flex:none}
.choice:has(input:checked),.check:has(input:checked){border-color:var(--blue);background:var(--sky)}
.form-rows{display:grid;gap:12px;background:var(--sky);border-radius:14px;padding:14px}
.form-rows label{font-size:15px}
.form-rows textarea{min-height:70px;background:var(--surface)}
.form-rows input{background:var(--surface)}
.ctrl-note{font-size:14px;color:var(--muted);margin:10px 0 0}

.linkout{display:flex;align-items:center;justify-content:space-between;gap:10px;background:var(--sky);border-radius:14px;padding:14px 16px;margin:4px 0 12px;text-decoration:none;color:var(--ink);font-weight:700}
.linkout.is-off{color:var(--muted);font-weight:500}

.lesson-end{margin:24px 0 36px;text-align:center}
.lesson-end p{color:var(--muted);font-size:15px}
.lesson-end .row{justify-content:center}

/* ---------- просмотр картинки ---------- */
.lb{position:fixed;inset:0;z-index:50;background:#0A1018;display:none;flex-direction:column}
.lb.open{display:flex}
.lb-top{display:flex;gap:8px;justify-content:flex-end;padding:calc(env(safe-area-inset-top,0px) + 10px) 12px 10px}
.lb-top button{background:rgba(255,255,255,.14);color:#fff;border:0;border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;min-width:44px}
.lb-scroll{flex:1;overflow:auto;-webkit-overflow-scrolling:touch;padding:12px 12px calc(env(safe-area-inset-bottom,0px) + 12px)}
.lb-inner{margin:0 auto;transition:width .2s}
.lb-inner img{width:100%;background:#fff;border-radius:6px}

/* ---------- сводка ---------- */
.page-head{padding:24px 0 8px}
.page-head h1{margin:0;font-size:26px;color:var(--ink)}
.page-head p{color:var(--muted);margin:6px 0 0}
.stat-row{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:14px 0}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
.stat b{display:block;font-size:26px;color:var(--ink);line-height:1.1}
.stat span{font-size:14px;color:var(--muted)}
.bars{display:grid;gap:8px;margin:8px 0 4px}
.barrow{font-size:14px}
.barrow .lbl{display:flex;justify-content:space-between;gap:8px;color:var(--text)}
.barrow .track{height:8px;border-radius:99px;background:var(--sky);overflow:hidden;margin-top:3px}
.barrow .track i{display:block;height:100%;background:var(--blue)}
pre{background:var(--field);border:1px solid var(--line);border-radius:12px;padding:12px;font-size:12.5px;line-height:1.45;overflow-x:auto}
.demo-flag{font-size:13px;color:var(--muted);border-left:3px solid var(--blue);padding:2px 0 2px 10px;margin:10px 0}