/* ============================================================
   Русский язык и литература — дизайн-система платформы
   ============================================================ */

:root{
  --pink:#ff5fa2;      --pink-d:#ff2d86;   --pink-s:#ffe0ee;
  --sky:#35c3f3;       --sky-d:#0aa3d8;    --sky-s:#dcf3ff;
  --yellow:#ffd93d;    --yellow-d:#f0b400; --yellow-s:#fff5cc;
  --violet:#9d86f0;    --violet-s:#ece6ff;
  --mint:#3ecf9a;      --mint-s:#d9f8ec;
  --red:#ff5c5c;       --red-s:#ffe2e2;
  --ink:#16223f;       --muted:#7b89a8;    --line:#e7edf8;
  --bg:#f2f8ff;        --white:#fff;
  --r-lg:26px; --r-md:18px; --r-sm:12px;
  --shadow:0 10px 26px rgba(30,60,120,.10);
  --shadow-s:0 4px 12px rgba(30,60,120,.08);
  --hand:'Caveat','Comic Sans MS','Segoe Print',cursive;
  --font:'Nunito','Segoe UI',system-ui,-apple-system,sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:var(--font);color:var(--ink);background:var(--bg);
  font-size:15px;line-height:1.55;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
img,svg{max-width:100%}
.ico{flex:none}

/* ---------------------- Каркас ---------------------- */
.layout{display:grid;grid-template-columns:272px minmax(0,1fr);min-height:100vh}
.content{padding:22px 26px 60px;min-width:0}
.page-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:0 0 18px}
.page-head h1{font-family:var(--hand);font-size:40px;margin:0;line-height:1}
.page-head .sub{color:var(--muted);font-weight:600}
.spacer{flex:1}

/* ---------------------- Топбар ---------------------- */
.topbar{
  grid-column:1/-1;display:flex;align-items:center;gap:20px;
  background:var(--white);border-bottom:2px solid var(--line);
  padding:10px 24px;position:sticky;top:0;z-index:40;
}
.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand .logo{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--pink-s),var(--sky-s));border:2px solid var(--ink);color:var(--ink)
}
.brand b{display:block;font-size:15px;line-height:1.15;max-width:150px}
.slogan{font-family:var(--hand);font-size:23px;white-space:nowrap}
.slogan i{font-style:normal;border-bottom:3px solid var(--pink);padding-bottom:1px}
.searchbox{flex:1;max-width:420px;margin-left:auto;position:relative}
.searchbox input{
  width:100%;padding:11px 16px 11px 42px;border:2px solid var(--line);border-radius:999px;
  background:#f8fbff;outline:none
}
.searchbox input:focus{border-color:var(--sky);background:#fff}
.searchbox .ico{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted)}
.topbar-actions{display:flex;align-items:center;gap:14px;flex:none}
.bell{position:relative;color:var(--ink);background:none;border:0;cursor:pointer;padding:6px}
.bell .dot{position:absolute;top:4px;right:4px;width:9px;height:9px;border-radius:50%;background:var(--pink);border:2px solid #fff}
.userchip{display:flex;align-items:center;gap:9px;padding:5px 12px 5px 5px;border-radius:999px;border:2px solid var(--line);background:#fff;cursor:pointer}
.userchip:hover{border-color:var(--pink)}
.avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;font-weight:800;font-size:13px;color:#fff;background:var(--pink);flex:none}
.avatar.blue{background:var(--sky)} .avatar.yellow{background:var(--yellow-d)}
.avatar.violet{background:var(--violet)} .avatar.mint{background:var(--mint)} .avatar.sky{background:var(--sky-d)}
.avatar.lg{width:52px;height:52px;font-size:18px}
.menu{position:relative}
.menu-drop{
  position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:2px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--shadow);min-width:210px;padding:8px;display:none;z-index:60
}
.menu.open .menu-drop{display:block}
.menu-drop a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;font-weight:600}
.menu-drop a:hover{background:var(--sky-s)}

/* ---------------------- Сайдбар ---------------------- */
.sidebar{
  background:linear-gradient(180deg,#d9f0ff 0%,#eaf7ff 45%,#f6fbff 100%);
  border-right:2px solid var(--line);padding:18px 16px 30px;display:flex;flex-direction:column;gap:10px;
}
.nav-pill{
  display:flex;align-items:center;gap:11px;background:#fff;border:2px solid var(--line);
  border-radius:999px;padding:11px 14px;font-weight:800;box-shadow:var(--shadow-s);
  transition:transform .15s,box-shadow .15s,background .15s
}
.nav-pill .ico:last-child{margin-left:auto;color:var(--muted)}
.nav-pill:hover{transform:translateX(3px);box-shadow:0 8px 18px rgba(30,60,120,.14)}
.nav-pill.active{background:var(--pink);color:#fff;border-color:var(--pink-d)}
.nav-pill.active .ico{color:#fff}
.nav-pill.pink .ico:first-child{color:var(--pink)}
.nav-pill.sky .ico:first-child{color:var(--sky)}
.nav-pill.violet .ico:first-child{color:var(--violet)}
.nav-pill.yellow .ico:first-child{color:var(--yellow-d)}
.nav-pill.mint .ico:first-child{color:var(--mint)}
.nav-sep{height:2px;background:#fff;opacity:.8;margin:8px 4px;border-radius:2px}
.nav-quote{margin-top:auto;padding:14px 8px 0;text-align:center}
.nav-quote p{font-family:var(--hand);font-size:21px;line-height:1.15;margin:0 0 6px;color:#3a4a6b}

/* ---------------------- Карточки ---------------------- */
.card{background:#fff;border:2px solid var(--line);border-radius:var(--r-lg);padding:18px;box-shadow:var(--shadow-s)}
.card.tight{padding:14px}
.card h2,.card h3{margin:0 0 12px;font-size:18px}
.card-head{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.card-head h2,.card-head h3{margin:0;flex:1;font-size:18px}
.grid{display:grid;gap:16px}
.g-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.dash{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}

/* ---------------------- Герой ---------------------- */
.hero{
  position:relative;background:#fff;border:2px solid var(--line);border-radius:var(--r-lg);
  padding:18px;overflow:hidden;box-shadow:var(--shadow-s);display:grid;
  grid-template-columns:minmax(0,1fr) minmax(180px,220px);gap:16px;align-items:center
}
.hero-main{display:flex;align-items:center;gap:10px;min-width:0}
.hero-cat{width:clamp(150px,20vw,250px);flex:none;margin:-10px 0 -18px -8px}
.hero-title{font-family:var(--hand);font-size:clamp(30px,3.2vw,50px);line-height:.95;transform:rotate(-3deg);min-width:0;overflow-wrap:break-word}
.hero-title small{display:block;font-family:var(--font);font-size:13px;font-weight:700;color:var(--muted);transform:rotate(3deg);margin-top:10px;line-height:1.35}
.quote{
  border:2px solid var(--ink);border-radius:16px;padding:10px 12px;font-size:12.5px;line-height:1.35;
  display:flex;gap:10px;align-items:center;transform:rotate(2deg);background:var(--yellow-s)
}
.quote+.quote{margin-top:12px;transform:rotate(-2deg);background:var(--sky-s)}
.quote img{width:54px;height:54px;border-radius:50%;border:2px solid var(--ink);flex:none}
.quote b{display:block;margin-top:4px;font-size:11.5px;color:#4b5a7a}

/* ---------------------- Плитки разделов ---------------------- */
.tiles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:16px}
.tile{
  position:relative;border-radius:var(--r-lg);padding:18px 18px 54px;border:2px solid var(--line);
  box-shadow:var(--shadow-s);overflow:hidden;transition:transform .15s,box-shadow .15s;display:block
}
.tile:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.tile h3{font-family:var(--hand);font-size:29px;margin:10px 0 4px;line-height:1}
.tile p{margin:0;font-size:13px;color:#4a5875;max-width:88%}
.tile .tile-ico{width:46px;height:46px;display:grid;place-items:center;border-radius:14px;background:#fff;border:2px solid var(--ink)}
.tile .go{position:absolute;right:16px;bottom:16px;width:38px;height:38px;border-radius:50%;background:var(--pink);color:#fff;display:grid;place-items:center;box-shadow:var(--shadow-s)}
.tile .spark{position:absolute;right:-6px;top:-6px;width:96px;opacity:.9;pointer-events:none}
.t-sky{background:var(--sky-s)} .t-pink{background:var(--pink-s)} .t-violet{background:var(--violet-s)}
.t-yellow{background:var(--yellow-s)} .t-rose{background:#ffe6f0} .t-mint{background:var(--mint-s)}

/* ---------------------- Кнопки ---------------------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;border:2px solid var(--ink);background:#fff;color:var(--ink);
  border-radius:999px;padding:9px 18px;font-weight:800;cursor:pointer;transition:transform .12s,box-shadow .12s;
  box-shadow:0 3px 0 rgba(22,34,63,.18)
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px);box-shadow:none}
.btn-pink{background:var(--pink);color:#fff;border-color:var(--pink-d)}
.btn-sky{background:var(--sky);color:#fff;border-color:var(--sky-d)}
.btn-yellow{background:var(--yellow);border-color:var(--yellow-d)}
.btn-mint{background:var(--mint);color:#fff;border-color:#28b284}
.btn-ghost{border-color:var(--line);box-shadow:none;color:var(--muted)}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink)}
.btn-sm{padding:6px 12px;font-size:13px}
.btn-icon{padding:7px;border-radius:50%}
.btn[disabled]{opacity:.55;cursor:not-allowed;transform:none}

/* ---------------------- Формы ---------------------- */
.field{margin-bottom:14px}
.field label{display:block;font-weight:800;font-size:13px;margin-bottom:6px}
.field .hint{font-weight:600;color:var(--muted);font-size:12px}
input[type=text],input[type=email],input[type=password],input[type=number],input[type=date],select,textarea{
  width:100%;padding:11px 14px;border:2px solid var(--line);border-radius:14px;background:#fbfdff;outline:none;color:var(--ink)
}
input:focus,select:focus,textarea:focus{border-color:var(--sky);background:#fff}
textarea{min-height:96px;resize:vertical}
.row{display:flex;gap:12px;flex-wrap:wrap}
.row>*{flex:1;min-width:180px}
.inline{display:flex;gap:10px;align-items:center;flex-wrap:wrap}

/* ---------------------- Таблицы ---------------------- */
.tbl{width:100%;border-collapse:collapse;font-size:14px}
.tbl th{text-align:left;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);padding:8px 10px;border-bottom:2px solid var(--line)}
.tbl td{padding:10px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl tr:hover td{background:#f8fbff}
.tbl .actions{display:flex;gap:6px;justify-content:flex-end}

/* ---------------------- Бейджи, прогресс ---------------------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 11px;border-radius:999px;font-size:12px;font-weight:800;background:var(--line);color:#4a5875}
.badge.green{background:var(--mint-s);color:#1b8a63}
.badge.blue{background:var(--sky-s);color:#0b7ba8}
.badge.yellow{background:var(--yellow-s);color:#95700a}
.badge.red{background:var(--red-s);color:#c93b3b}
.badge.pink{background:var(--pink-s);color:#c02a6d}
.badge.violet{background:var(--violet-s);color:#6446c9}
.bar{height:10px;border-radius:999px;background:var(--line);overflow:hidden}
.bar span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--sky),var(--pink))}
.stat{display:flex;flex-direction:column;gap:2px}
.stat b{font-size:26px;line-height:1}
.stat small{color:var(--muted);font-weight:700;font-size:11.5px}
.kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;text-align:center}
.kpi>div{background:#f8fbff;border:2px solid var(--line);border-radius:var(--r-md);padding:10px 6px}

/* ---------------------- Прочее ---------------------- */
.flash{padding:12px 16px;border-radius:var(--r-md);border:2px solid;margin-bottom:14px;font-weight:700}
.flash.ok{background:var(--mint-s);border-color:var(--mint);color:#17795a}
.flash.err{background:var(--red-s);border-color:var(--red);color:#b53838}
.flash.info{background:var(--sky-s);border-color:var(--sky);color:#0b6f97}
.empty{text-align:center;padding:34px 16px;color:var(--muted)}
.empty b{display:block;font-family:var(--hand);font-size:26px;color:var(--ink)}
.chips{display:flex;gap:8px;flex-wrap:wrap}
.chip{padding:7px 14px;border-radius:999px;border:2px solid var(--line);background:#fff;font-weight:800;font-size:13px;cursor:pointer}
.chip.active{background:var(--pink);color:#fff;border-color:var(--pink-d)}
.chip.sky.active{background:var(--sky);border-color:var(--sky-d)}
.muted{color:var(--muted)}
.hand{font-family:var(--hand)}
.divider{height:2px;background:var(--line);margin:14px 0;border-radius:2px}
.list-clean{list-style:none;margin:0;padding:0}
.list-row{display:flex;align-items:center;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.list-row:last-child{border-bottom:0}

/* ---------------------- Тест ---------------------- */
.qcard{border:2px solid var(--line);border-radius:var(--r-lg);padding:20px;background:#fff;box-shadow:var(--shadow-s)}
.qnum{font-family:var(--hand);font-size:28px;color:var(--pink)}
.qtext{font-size:17px;font-weight:700;margin:6px 0 16px}
.opt{display:flex;gap:12px;align-items:flex-start;border:2px solid var(--line);border-radius:16px;padding:12px 14px;margin-bottom:10px;cursor:pointer;background:#fbfdff;transition:border-color .12s,background .12s}
.opt:hover{border-color:var(--sky)}
.opt input{margin-top:3px;accent-color:var(--pink);width:18px;height:18px}
.opt.sel{border-color:var(--pink);background:var(--pink-s)}
.opt.correct{border-color:var(--mint);background:var(--mint-s)}
.opt.wrong{border-color:var(--red);background:var(--red-s)}
.qnav{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}
.qnav b{width:34px;height:34px;border-radius:12px;display:grid;place-items:center;border:2px solid var(--line);background:#fff;font-size:13px}
.qnav b.done{background:var(--sky-s);border-color:var(--sky)}
.qnav b.cur{background:var(--pink);color:#fff;border-color:var(--pink-d)}
.stimul{background:var(--yellow-s);border:2px dashed var(--yellow-d);border-radius:var(--r-md);padding:16px;white-space:pre-wrap;line-height:1.6}

/* ---------------------- Кольцо результата ---------------------- */
.ring{width:132px;height:132px;position:relative;flex:none}
.ring svg{transform:rotate(-90deg)}
.ring .val{position:absolute;inset:0;display:grid;place-items:center;font-family:var(--hand);font-size:36px}

/* ---------------------- Чат / помощник ---------------------- */
.chatbox{display:flex;flex-direction:column;height:min(66vh,620px)}
.chatlog{flex:1;overflow-y:auto;padding:6px 4px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:78%;padding:12px 16px;border-radius:18px;border:2px solid var(--line);background:#fff;white-space:pre-wrap;line-height:1.5}
.msg.me{align-self:flex-end;background:var(--pink-s);border-color:var(--pink)}
.msg.ai{align-self:flex-start;background:var(--sky-s);border-color:var(--sky)}
.msg .who{display:block;font-size:11px;font-weight:800;color:var(--muted);margin-bottom:3px}
.chat-input{display:flex;gap:10px;margin-top:12px}
.chat-input textarea{min-height:52px;max-height:130px;border-radius:18px}
.typing{display:inline-flex;gap:4px;align-items:center}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--sky);animation:bounce 1s infinite}
.typing i:nth-child(2){animation-delay:.15s} .typing i:nth-child(3){animation-delay:.3s}
@keyframes bounce{0%,80%,100%{transform:translateY(0);opacity:.5}40%{transform:translateY(-5px);opacity:1}}

/* ---------------------- Достижения ---------------------- */
.ach{display:flex;gap:10px;align-items:center;padding:10px;border:2px solid var(--line);border-radius:var(--r-md);background:#fff}
.ach.locked{opacity:.45;filter:grayscale(.6)}
.ach .ic{width:42px;height:42px;border-radius:14px;display:grid;place-items:center;background:var(--yellow-s);border:2px solid var(--ink)}

/* ---------------------- Модалка ---------------------- */
.modal-bg{position:fixed;inset:0;background:rgba(18,32,60,.45);display:none;align-items:center;justify-content:center;z-index:100;padding:20px}
.modal-bg.open{display:flex}
.modal{background:#fff;border-radius:var(--r-lg);border:2px solid var(--ink);max-width:640px;width:100%;max-height:88vh;overflow:auto;padding:22px;box-shadow:0 24px 60px rgba(10,20,50,.3)}
.modal h3{margin:0 0 14px;font-family:var(--hand);font-size:30px}

/* ---------------------- Авторизация ---------------------- */
.auth{min-height:100vh;display:grid;place-items:center;padding:24px;
  background:radial-gradient(circle at 15% 20%,var(--pink-s),transparent 45%),radial-gradient(circle at 85% 15%,var(--sky-s),transparent 40%),var(--bg)}
.auth-card{background:#fff;border:2px solid var(--line);border-radius:30px;box-shadow:var(--shadow);max-width:920px;width:100%;display:grid;grid-template-columns:1fr 1fr;overflow:hidden}
.auth-art{background:linear-gradient(160deg,var(--sky-s),var(--pink-s));padding:26px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}
.auth-art h2{font-family:var(--hand);font-size:36px;margin:8px 0 4px;line-height:1}
.auth-form{padding:30px}
.auth-form h1{font-family:var(--hand);font-size:40px;margin:0 0 4px}
.demo-logins{background:#f8fbff;border:2px dashed var(--line);border-radius:var(--r-md);padding:12px;font-size:12.5px;margin-top:16px}
.demo-logins code{background:#fff;padding:1px 6px;border-radius:6px;border:1px solid var(--line)}

/* ---------------------- Адаптив ---------------------- */
@media (max-width:1240px){
  .dash{grid-template-columns:minmax(0,1fr)}
  .hero{grid-template-columns:minmax(0,1fr)}
  .tiles{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g-4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .layout{grid-template-columns:1fr}
  .sidebar{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:2px solid var(--line);padding:12px}
  .nav-pill{white-space:nowrap}
  .nav-pill .ico:last-child,.nav-sep,.nav-quote{display:none}
  .slogan,.searchbox{display:none}
  .hero-cat{width:190px}
  .hero-title{font-size:38px}
  .g-2,.g-3,.tiles{grid-template-columns:minmax(0,1fr)}
  .auth-card{grid-template-columns:1fr}
  .auth-art{display:none}
  .content{padding:16px}
}