/* Kaverin kanssa: yhteinen tyyli oppilaan ja opettajan näkymille */
:root{
  color-scheme:light dark;
  --paper:#F8F7FC; --surface:#FFFFFF; --surface-2:#F0EEF8;
  --ink:#1D1A2B; --muted:#5F5B78; --line:#DEDAEE;
  --accent:#6D3BD2; --accent-ink:#4F25A8; --accent-soft:#EEE7FB;
  --ok:#14755A; --ok-soft:#E1F3EC;
  --warn:#9A5500; --warn-soft:#FBEEDD;
  --bad:#B4233B; --bad-soft:#FBE7EA;
  --shadow:0 1px 2px rgba(29,26,43,.06), 0 8px 24px -16px rgba(29,26,43,.32);
}
@media (prefers-color-scheme: dark){
  :root{
    --paper:#131121; --surface:#1C1930; --surface-2:#242040;
    --ink:#EFEDFA; --muted:#A9A5C6; --line:#332F52;
    --accent:#A98BFF; --accent-ink:#C9B8FF; --accent-soft:#2A2050;
    --ok:#5ECCA1; --ok-soft:#16342A;
    --warn:#E5AA5B; --warn-soft:#33240F;
    --bad:#FF8A9C; --bad-soft:#3A1822;
    --shadow:0 1px 2px rgba(0,0,0,.4), 0 8px 24px -16px rgba(0,0,0,.8);
  }
}
*{box-sizing:border-box}
[hidden]{display:none!important}
body{
  margin:0; background:var(--paper); color:var(--ink);
  font-family:"Source Sans 3", ui-sans-serif, system-ui, sans-serif; font-size:17px; line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:"Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif; letter-spacing:-.01em; text-wrap:balance}
h1{font-weight:800; font-size:clamp(28px, 6vw, 42px); line-height:1.05; margin:0 0 10px; letter-spacing:-.02em}
h2{font-weight:700; font-size:24px; margin:0 0 10px}
p{margin:0 0 10px}
.wrap{max-width:860px; margin:0 auto; padding:0 18px 64px}
.leveä{max-width:1240px}
.muted{color:var(--muted)}

/* ---------- yläpalkki ---------- */
.topbar{position:sticky; top:0; z-index:20; background:color-mix(in srgb, var(--paper) 92%, transparent); backdrop-filter:blur(8px); border-bottom:1px solid var(--line)}
.topbar-inner{max-width:1240px; margin:0 auto; padding:10px 18px; display:flex; align-items:center; gap:14px; flex-wrap:wrap}
.brandmark{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--accent); white-space:nowrap}
.tila-lappu{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:12px; color:var(--muted); margin-left:auto}
.eyebrow{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:11.5px; letter-spacing:.16em; text-transform:uppercase; color:var(--muted); margin:0 0 10px}
.hero{padding-block:30px 12px}
.lede{color:var(--muted); max-width:60ch; font-size:18px}

/* ---------- painikkeet ---------- */
button{font-family:inherit; cursor:pointer}
button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible{outline:2.5px solid var(--accent); outline-offset:2px}
.nappi{
  font-size:16px; font-weight:600; border-radius:10px; padding:9px 18px; border:1.5px solid transparent;
  background:var(--accent); color:#fff; transition:filter .15s ease;
}
:root .nappi{color:#fff}
@media (prefers-color-scheme: dark){ .nappi{color:#150F30} }
.nappi:hover:not(:disabled){filter:brightness(1.08)}
.nappi:disabled{opacity:.5; cursor:default}
.nappi.iso{font-size:20px; padding:13px 30px; border-radius:12px}
.nappi.toissij{background:transparent; color:var(--ink); border-color:var(--line)}
.nappi.toissij:hover:not(:disabled){background:var(--surface-2); filter:none}
.nappi.vaara{background:var(--bad); color:#fff}
.linkki-nappi{background:none; border:none; color:var(--accent-ink); text-decoration:underline; padding:4px; font-size:15px}

/* ---------- kortit ja valinnat ---------- */
.kortit{display:grid; gap:12px; grid-template-columns:repeat(auto-fill, minmax(240px, 1fr)); margin-top:16px}
.kortti{
  text-align:left; background:var(--surface); border:1.5px solid var(--line); border-radius:16px; padding:18px 20px;
  box-shadow:var(--shadow); color:var(--ink); transition:border-color .15s, transform .15s;
}
.kortti:hover{border-color:var(--accent); transform:translateY(-1px)}
.kortti .otsikko{font-family:"Bricolage Grotesque", sans-serif; font-weight:800; font-size:21px; display:block}
.kortti .apu{color:var(--muted); font-size:15px; display:block; margin-top:4px}
.paneeli{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:22px; box-shadow:var(--shadow); margin-top:18px}
.lomake{display:flex; gap:10px; flex-wrap:wrap; align-items:center; margin-top:14px}
input[type=text], input[type=password], select, textarea{
  font-family:inherit; font-size:17px; color:var(--ink); background:var(--surface); border:1.5px solid var(--line); border-radius:9px; padding:9px 12px;
}
input.iso-syote{font-size:22px; padding:12px 16px; width:min(320px, 100%)}
.virhe-viesti{background:var(--bad-soft); border:1px solid color-mix(in srgb, var(--bad) 35%, transparent); color:var(--ink); border-radius:10px; padding:10px 14px; margin-top:12px}
.tieto-viesti{background:var(--accent-soft); border:1px solid color-mix(in srgb, var(--accent) 30%, transparent); border-radius:10px; padding:10px 14px; margin-top:12px}
.takaisin{margin-bottom:6px}

/* ---------- oppilas: työpari ---------- */
.pari-palkki{
  display:flex; gap:12px 18px; align-items:center; flex-wrap:wrap; background:var(--accent-soft); border:1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius:14px; padding:12px 16px; margin-top:16px;
}
.pari-palkki .otsikko{font-weight:700; color:var(--accent-ink)}
.jasen{display:inline-flex; align-items:center; gap:7px; background:var(--surface); border:1.5px solid var(--line); border-radius:99px; padding:4px 13px; font-weight:600}
.jasen.valmis{border-color:var(--ok); color:var(--ok)}
.jasen.minä{border-style:dashed}
.jasen .piste{width:9px; height:9px; border-radius:50%; background:var(--line)}
.jasen.valmis .piste{background:var(--ok)}
.tehtava-numero{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:13px; color:var(--muted); margin-left:auto}
.uusi-pari{text-align:center; padding:34px 18px}
.uusi-pari .suuret-nimet{display:flex; gap:12px; justify-content:center; flex-wrap:wrap; margin:20px 0 26px}
.uusi-pari .suuret-nimet .jasen{font-size:28px; padding:10px 26px}
.odotus-laatikko{text-align:center; padding:34px 18px}
.bonus{background:var(--warn-soft); border:1.5px solid color-mix(in srgb, var(--warn) 40%, transparent); border-radius:16px; padding:18px 22px; margin:20px auto 0; max-width:640px; text-align:left}
.bonus .otsake{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:11px; letter-spacing:.14em; text-transform:uppercase; color:var(--warn); display:block; margin-bottom:6px}
.bonus p{font-size:20px; font-weight:600; margin:0 0 12px}
.pyorii{display:inline-block; width:26px; height:26px; border:3px solid var(--line); border-top-color:var(--accent); border-radius:50%; animation:pyorii 1s linear infinite; vertical-align:middle; margin-right:8px}
@keyframes pyorii{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){ *{transition:none!important; animation:none!important} }

/* ---------- tehtävät ---------- */
.teht{background:var(--surface); border:1px solid var(--line); border-radius:16px; padding:20px 22px; box-shadow:var(--shadow); margin-top:18px}
.teht.lukittu{border-color:var(--ok)}
.teht-head{display:flex; gap:12px; align-items:flex-start; margin-bottom:4px}
.numero{flex:none; min-width:30px; height:30px; padding:0 6px; border-radius:99px; background:var(--accent-soft); color:var(--accent-ink); font-family:"JetBrains Mono", ui-monospace, monospace; font-size:13px; font-weight:500; display:grid; place-items:center; margin-top:2px}
.teht h3{font-weight:700; font-size:20px; margin:0; line-height:1.25}
.teht-ohje{margin:2px 0 14px 42px; color:var(--muted); font-size:15.5px; font-style:italic}
.teht-body{margin-left:42px}
@media (max-width:560px){ .teht-ohje,.teht-body{margin-left:0} .teht{padding:16px} }
.tarina{background:var(--surface-2); border-left:4px solid var(--accent); border-radius:4px 12px 12px 4px; padding:14px 16px; margin:6px 0 16px}
.tarina h4{font-size:17px; margin:0 0 8px}
.tarina p{margin:0 0 10px; line-height:1.6}
.tarina p:last-child{margin-bottom:0}
.kasitteet{display:flex; flex-wrap:wrap; gap:7px; margin-bottom:14px}
.kasite{background:var(--surface-2); border:1px solid var(--line); border-radius:8px; padding:5px 11px; font-weight:600; font-size:15.5px}
.kasite u{font-family:"JetBrains Mono", ui-monospace, monospace; color:var(--accent); text-decoration:none; margin-right:7px}
.rivi{display:flex; gap:11px; align-items:flex-start; padding:8px 0; border-top:1px solid var(--line); flex-wrap:wrap}
.rivi:first-child{border-top:none}
.rivi-teksti{flex:1; min-width:0}
.rivi-nro{flex:none; width:26px; font-family:"JetBrains Mono", ui-monospace, monospace; font-size:12.5px; color:var(--muted); text-align:right; padding-top:8px}
.rivi select{flex:none; width:66px; font-family:"JetBrains Mono", ui-monospace, monospace; font-weight:500}
.merkki{font-family:"JetBrains Mono", ui-monospace, monospace; font-weight:600; flex:none; width:22px; text-align:center}
.merkki.oikein{color:var(--ok)} .merkki.vaarin{color:var(--bad)}
.tf{display:flex; gap:10px; align-items:flex-start; padding:9px 0; border-top:1px solid var(--line)}
.tf:first-child{border-top:none}
.tf-nappit{flex:none; display:flex; gap:5px}
.tf-nappit button{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:13px; width:36px; height:34px; border-radius:8px; background:var(--surface); color:var(--muted); border:1.5px solid var(--line)}
.tf-nappit button[aria-pressed=true]{background:var(--ink); color:var(--paper); border-color:var(--ink)}
.selite{display:block; font-size:14.5px; color:var(--muted); margin-top:2px}
.mc{margin-bottom:16px}
.mc-kys{font-weight:600; margin-bottom:6px}
.mc label{display:flex; gap:9px; align-items:flex-start; padding:5px 9px; border-radius:8px; cursor:pointer}
.mc label:hover{background:var(--surface-2)}
.mc input{margin-top:6px; accent-color:var(--accent); flex:none}
.fill-rivi{display:flex; flex-wrap:wrap; gap:8px; align-items:center; padding:8px 0; border-top:1px solid var(--line)}
.fill-rivi:first-child{border-top:none}
.fill-rivi input{width:min(260px,100%)}
.valinnat{display:grid; gap:8px}
.valinta{display:grid; grid-template-columns:auto 1fr; gap:10px; align-items:start; padding:11px 13px; border:1.5px solid var(--line); border-radius:11px; background:var(--surface); cursor:pointer}
.valinta:hover{border-color:var(--accent)}
.valinta input{margin-top:4px; width:18px; height:18px; accent-color:var(--accent)}
.valinta .selite{grid-column:2}
.valinta.vaarin-valinta{border-color:var(--bad); background:var(--bad-soft)}
.kysymys{font-weight:600; margin:16px 0 6px}
.kysymys:first-child{margin-top:0}
textarea{width:100%; min-height:76px; resize:vertical; line-height:1.5}
.tapaus{background:var(--surface-2); border-left:4px solid var(--accent); border-radius:4px 10px 10px 4px; padding:12px 14px; margin:16px 0 8px}
.tapaus p{margin:0}
.tapaus .vinkki{margin-top:6px; font-size:14.5px; color:var(--muted); font-style:italic}
.toimet, .tyokalut{display:flex; gap:9px; flex-wrap:wrap; margin-top:14px; align-items:center}
.palaute{margin-top:12px; padding:11px 14px; border-radius:10px; font-size:15.5px; background:var(--surface-2); border:1px solid var(--line)}
.palaute.hyvin{background:var(--ok-soft); border-color:color-mix(in srgb, var(--ok) 35%, transparent)}
.palaute.osin{background:var(--warn-soft); border-color:color-mix(in srgb, var(--warn) 35%, transparent)}
.palaute .kohta{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:14px; background:var(--surface); border-radius:6px; padding:1px 7px}
.palaute .vihje{display:block; margin-top:6px; color:var(--muted); font-style:italic}
.malli{margin-top:14px; padding:12px 14px; border-radius:10px; background:var(--accent-soft); border:1px solid color-mix(in srgb, var(--accent) 25%, transparent); font-size:15.5px}
.malli .otsake{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:10.5px; letter-spacing:.13em; text-transform:uppercase; color:var(--accent-ink); display:block; margin-bottom:5px}
.malli p{margin:0 0 9px}
.malli p:last-child{margin-bottom:0}
.malli .q{font-weight:700}
/* suomen kielen tehtävät */
.kohde{margin-top:16px; padding-top:12px; border-top:1px dashed var(--line)}
.kohde:first-child{margin-top:0; padding-top:0; border-top:none}
.kohde-ylin{display:flex; gap:8px; align-items:center; margin-bottom:8px; flex-wrap:wrap}
.lappu{font-size:12.5px; color:var(--muted); border:1px solid var(--line); border-radius:99px; padding:1px 10px}
.merkki-lappu{font-family:"JetBrains Mono", ui-monospace, monospace}
.valmisleima{margin-left:auto; color:var(--ok); font-weight:700; font-size:14px}
.kohde textarea{font-size:16px}
.kohde.valmis textarea{border-color:var(--ok); background:var(--ok-soft)}
.rivit{display:grid}
.vaihtoehdot{display:flex; gap:7px; flex:none; flex-wrap:wrap}
.vaihtoehto{font-size:17px; padding:6px 13px; min-width:104px; text-align:center; border:1.5px solid var(--line); border-radius:9px; background:var(--surface); color:var(--ink)}
.vaihtoehto[aria-pressed="true"]{background:var(--accent-soft); border-color:var(--accent); color:var(--accent-ink)}
.vaihtoehto.pieni{min-width:0; font-size:16px; padding:3px 10px}
input.syote{flex:1 1 150px; min-width:130px; max-width:260px; font-family:"JetBrains Mono", ui-monospace, monospace; font-size:16.5px; background:var(--surface-2)}
.rivi-tila{flex:1 1 100%; font-size:14.5px; color:var(--muted); padding-left:37px}
.rivi.valmis .rivi-tila{color:var(--ok); font-weight:600}
.rivi.valmis .vaihtoehto[aria-pressed="true"]{background:var(--ok-soft); border-color:var(--ok); color:var(--ok)}
.rivi-valinta .lause{flex:1 1 220px; min-width:0; line-height:2.1}
.lause{flex:1 1 260px; font-size:17.5px}
.lause .paate{font-family:"JetBrains Mono", ui-monospace, monospace; font-weight:500; color:var(--ok)}
.annettu{flex:0 1 210px; min-width:150px; font-size:17.5px}
.annettu-sana{font-weight:700; letter-spacing:.05em; margin-right:12px; display:inline-block; min-width:9.5em}
.valinta-ryhma{display:inline-flex; flex-wrap:wrap; max-width:100%; gap:4px; margin:0 3px; vertical-align:baseline}
.valinta-ryhma.vaara{outline:2px solid var(--warn); outline-offset:2px; border-radius:9px}
.merkkivalinta{display:flex; gap:6px; flex:none}
.merkkivalinta button{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:17px; width:42px; height:36px; border-radius:9px; border:1.5px solid var(--line); background:var(--surface); color:var(--ink)}
.merkkivalinta button[aria-pressed="true"]{background:var(--accent-soft); border-color:var(--accent)}
.merkkinappi{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:17px; padding:5px 13px; border-radius:9px; border:1.5px solid var(--line); background:var(--surface); color:var(--ink)}
.tyhjaa{margin-left:auto; font-size:14px; padding:6px 11px; color:var(--muted); background:transparent; border:1.5px solid var(--line); border-radius:9px}

/* ---------- opettajan taulu ---------- */
.taulu-otsikko{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap}
.suuri-luku{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:clamp(34px, 6vw, 56px); font-weight:500; color:var(--accent); line-height:1}
.nimilista{display:flex; flex-wrap:wrap; gap:12px; margin:22px 0}
.nimi{
  display:inline-flex; align-items:center; gap:10px; background:var(--surface); border:2px solid var(--line); border-radius:99px;
  padding:8px 22px; font-family:"Bricolage Grotesque", sans-serif; font-weight:700; font-size:clamp(22px, 3.2vw, 34px); box-shadow:var(--shadow);
}
.nimi button{background:none; border:none; color:var(--muted); font-size:20px; line-height:1; padding:0 2px; opacity:.5}
.nimi:hover button{opacity:1}
.ryhmat{display:grid; gap:14px; grid-template-columns:repeat(auto-fill, minmax(290px, 1fr)); margin-top:14px}
.ryhma{background:var(--surface); border:2px solid var(--line); border-radius:16px; padding:14px 16px; box-shadow:var(--shadow)}
.ryhma.odottaa{border-color:var(--warn); background:var(--warn-soft)}
.ryhma.lopetti{border-color:var(--ok); background:var(--ok-soft)}
.ryhma-ylin{display:flex; justify-content:space-between; align-items:baseline; gap:8px; margin-bottom:8px; font-family:"JetBrains Mono", ui-monospace, monospace; font-size:13px; color:var(--muted)}
.ryhma .jasen{font-size:22px; padding:3px 16px; margin:0 6px 6px 0}
.ryhma-tila{font-size:15px; color:var(--muted); margin-top:4px}
.edistyminen{height:8px; border-radius:99px; background:var(--line); overflow:hidden; margin-top:8px}
.edistyminen i{display:block; height:100%; background:var(--accent); border-radius:99px; transition:width .4s ease}
.tapahtumat{margin:0; padding:0; list-style:none; font-size:15.5px}
.tapahtumat li{padding:5px 0; border-top:1px solid var(--line)}
.tapahtumat li:first-child{border-top:none}
.tapahtumat .aika{font-family:"JetBrains Mono", ui-monospace, monospace; font-size:12px; color:var(--muted); margin-right:8px}
.huonevalitsin{display:flex; gap:8px; flex-wrap:wrap; margin:14px 0 0}
.huonevalitsin button{background:var(--surface); border:1.5px solid var(--line); border-radius:99px; padding:6px 16px; font-size:15.5px; color:var(--ink)}
.huonevalitsin button[aria-pressed=true]{background:var(--accent-soft); border-color:var(--accent); color:var(--accent-ink); font-weight:700}
dialog.modaali{border:1.5px solid var(--line); border-radius:14px; background:var(--surface); color:var(--ink); padding:22px; width:min(460px, calc(100vw - 36px)); box-shadow:var(--shadow)}
dialog.modaali::backdrop{background:rgba(20,15,40,.55)}
dialog.modaali h2{font-size:21px}
.modaali-napit{display:flex; gap:10px; justify-content:flex-end; flex-wrap:wrap; margin-top:16px}
footer{margin-top:34px; padding-top:16px; border-top:1px solid var(--line); color:var(--muted); font-size:13.5px}