/* Formelkort / MaFy-appen – mobil först, lugn design, ljust och mörkt läge. */

:root {
  --bg: #f5f6f8;
  --yta: #ffffff;
  --yta-2: #eef1f5;
  --text: #14213d;
  --dampad: #4a5568;
  --kant: #d5dbe3;
  --primar: #1d3557;
  --primar-hover: #274773;
  --primar-text: #ffffff;
  --accent: #b86e00;
  --ratt: #17683f;
  --ratt-bg: #e5f4eb;
  --fel: #b3261e;
  --fel-bg: #fcebea;
  --varning-bg: #fff4dc;
  --fokus: #2f6fde;
  --skugga: 0 1px 2px rgba(20, 33, 61, .06), 0 2px 8px rgba(20, 33, 61, .06);
  --radie: 14px;
  --tryck: 48px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1522;
    --yta: #172132;
    --yta-2: #1f2b3f;
    --text: #e8edf5;
    --dampad: #a7b2c3;
    --kant: #2d3b52;
    --primar: #a8c7fa;
    --primar-hover: #c2d7fb;
    --primar-text: #0b1a33;
    --accent: #f2b45a;
    --ratt: #74d69f;
    --ratt-bg: #132e20;
    --fel: #ff958c;
    --fel-bg: #371715;
    --varning-bg: #33280f;
    --fokus: #8ab4ff;
    --skugga: none;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.55;
  -webkit-tap-highlight-color: transparent;
}

.app {
  max-width: 640px;
  margin: 0 auto;
  padding: calc(12px + env(safe-area-inset-top)) calc(16px + env(safe-area-inset-right)) calc(32px + env(safe-area-inset-bottom)) calc(16px + env(safe-area-inset-left));
  min-height: 100vh;
  min-height: 100dvh;
  outline: none;
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.2rem; }
h3 { font-size: 1.05rem; color: var(--dampad); margin-top: 1.2em; }
h1:focus { outline: none; }
p { margin: 0 0 .75em; }
a { color: var(--primar); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.hoppa { position: absolute; left: -9999px; }
.hoppa:focus { left: 8px; top: 8px; z-index: 10; background: var(--yta); padding: 8px 12px; border-radius: 8px; }

:focus-visible { outline: 3px solid var(--fokus); outline-offset: 2px; }

[hidden] { display: none !important; }

.liten { font-size: .9rem; color: var(--dampad); }
.laddar { color: var(--dampad); padding: 24px 0; }
.feltext { color: var(--fel); }
.varning-text { color: var(--fel); }

/* ---------- ytor och knappar */

.kort-yta {
  background: var(--yta);
  border: 1px solid var(--kant);
  border-radius: var(--radie);
  padding: 18px;
  margin: 0 0 16px;
  box-shadow: var(--skugga);
}
.kort-yta.varning { background: var(--varning-bg); }

.knapp {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: var(--tryck);
  padding: 10px 18px;
  border-radius: 12px;
  border: 1px solid var(--kant);
  background: var(--yta);
  color: var(--text);
  font: inherit; font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
}
.knapp:hover { border-color: var(--primar); }
.knapp:disabled { opacity: .45; cursor: default; }
.knapp.primar { background: var(--primar); border-color: var(--primar); color: var(--primar-text); }
.knapp.primar:hover:not(:disabled) { background: var(--primar-hover); }
.knapp.stor { width: 100%; min-height: 60px; font-size: 1.2rem; }
.knapp.lank-knapp {
  background: none; border: none; color: var(--primar); padding: 8px 4px;
  font-weight: 500; text-decoration: underline; text-underline-offset: 3px; min-height: 44px;
}
.knapp.ratt-knapp { background: var(--ratt-bg); border-color: var(--ratt); color: var(--ratt); }
.knapp.fel-knapp { background: var(--fel-bg); border-color: var(--fel); color: var(--fel); }

.knapprad { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0; }
.knapprad > * { flex: 1 1 140px; }

/* ---------- topp och navigering */

.topp {
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--tryck); margin-bottom: 8px;
}
.tillbaka { display: inline-flex; align-items: center; min-height: var(--tryck); text-decoration: none; font-weight: 600; }
.rakning { color: var(--dampad); font-variant-numeric: tabular-nums; }

progress.framsteg {
  width: 100%; height: 8px; margin: 0 0 16px;
  appearance: none; -webkit-appearance: none; border: none; border-radius: 99px;
  background: var(--yta-2); overflow: hidden;
}
progress.framsteg::-webkit-progress-bar { background: var(--yta-2); border-radius: 99px; }
progress.framsteg::-webkit-progress-value { background: var(--primar); border-radius: 99px; transition: width .3s; }
progress.framsteg::-moz-progress-bar { background: var(--primar); border-radius: 99px; }

/* ---------- start */

.start-huvud { padding: 8px 0 4px; }
.start-huvud h1 { font-size: 1.9rem; margin-bottom: .1em; }
.underrubrik { color: var(--dampad); }

.nedrakning { text-align: center; }
.stort-tal { font-size: 3.4rem; font-weight: 800; line-height: 1; margin: 4px 0 2px; color: var(--primar); font-variant-numeric: tabular-nums; }
.pass-kort .pass-status { margin: 12px 0 4px; }

.meny { display: flex; flex-direction: column; gap: 8px; margin: 8px 0 24px; }
.meny-rad, .mall-rad {
  display: flex; flex-direction: column; justify-content: center;
  min-height: 56px; padding: 10px 16px;
  background: var(--yta); border: 1px solid var(--kant); border-radius: 12px;
  color: var(--text); text-decoration: none; font-weight: 600;
}
.meny-rad::after { content: "›"; position: absolute; right: 16px; }
.meny-rad { position: relative; padding-right: 36px; }

.fot { font-size: .85rem; color: var(--dampad); border-top: 1px solid var(--kant); padding-top: 12px; }
.guide { padding-left: 1.3em; }
.guide li { margin-bottom: .35em; }

/* ---------- uppgift */

.uppgift { margin-bottom: 24px; }
.meta-rad { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; font-size: .85rem; color: var(--dampad); }
.amne { font-weight: 700; text-transform: uppercase; letter-spacing: .04em; font-size: .75rem; }
.amne-matematik { color: var(--primar); }
.amne-fysik { color: var(--accent); }
.bricka { border: 1px solid var(--kant); border-radius: 99px; padding: 1px 10px; font-size: .78rem; }
.bricka.exempel { border-color: var(--accent); color: var(--accent); }

.fraga {
  font-size: 1.12rem;
  background: var(--yta);
  border: 1px solid var(--kant);
  border-radius: var(--radie);
  padding: 16px;
  margin: 8px 0 16px;
  white-space: pre-line;
  overflow-x: auto;
  box-shadow: var(--skugga);
}
.formel { white-space: nowrap; }
.formel-display { display: block; overflow-x: auto; overflow-y: hidden; padding: 4px 0; }
.katex { font-size: 1.1em; }
.katex-display { margin: .4em 0; }

.tips { margin-bottom: 8px; }
.meddelande { color: var(--fel); min-height: 1.5em; margin: 8px 0 0; }
.extra-knappar { display: flex; flex-direction: column; align-items: flex-start; gap: 4px; margin-top: 8px; }
.ledtrad { background: var(--varning-bg); border-radius: 10px; padding: 10px 14px; margin: 0; white-space: pre-line; }

/* ---------- svarsfält och tangentbord */

.svarsfalt {
  display: flex; align-items: center; gap: 10px;
  min-height: 64px; padding: 10px 16px;
  background: var(--yta); border: 2px solid var(--primar); border-radius: 12px;
  font-size: 1.35rem;
  overflow-x: auto;
}
.svarsdel.last .svarsfalt { border-color: var(--kant); }
.svar-innehall { flex: 1; display: flex; align-items: center; min-width: 0; }
.svar-tom { color: var(--dampad); font-size: 1rem; }
.svar-markor { display: inline-block; width: 2px; height: 1.3em; background: var(--primar); margin-left: 2px; animation: blink 1.1s steps(1) infinite; }
.svarsdel.last .svar-markor { display: none; }
@keyframes blink { 50% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .svar-markor { animation: none; } }
.svar-enhet { color: var(--dampad); font-size: 1.05rem; white-space: nowrap; }

.tangentbord {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px;
  margin: 12px 0;
  user-select: none; -webkit-user-select: none;
}
.tangent {
  min-height: 54px;
  border-radius: 10px;
  border: 1px solid var(--kant);
  background: var(--yta-2);
  color: var(--text);
  font: inherit; font-size: 1.3rem; font-weight: 500;
  cursor: pointer;
  touch-action: manipulation;
}
.tangent.siffra { background: var(--yta); font-weight: 600; }
.tangent.radera { color: var(--fel); }
.tangent:active { transform: scale(.96); background: var(--kant); }
.svara-knapp { width: 100%; min-height: 56px; font-size: 1.15rem; }

/* ---------- flerval och formelkort */

.alternativ-lista { display: flex; flex-direction: column; gap: 10px; }
.alternativ {
  display: flex; align-items: center; gap: 14px; text-align: left;
  min-height: 56px; padding: 12px 16px;
  background: var(--yta); color: var(--text);
  border: 1px solid var(--kant); border-radius: 12px;
  font: inherit; cursor: pointer; touch-action: manipulation;
  overflow-x: auto;
}
.alternativ:hover:not(:disabled) { border-color: var(--primar); }
.alternativ:disabled { cursor: default; }
.alternativ.ratt { background: var(--ratt-bg); border: 2px solid var(--ratt); }
.alternativ.fel { background: var(--fel-bg); border: 2px solid var(--fel); }
.bokstav {
  flex: none; display: inline-grid; place-items: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--yta-2); font-weight: 700; color: var(--dampad);
}
.alternativ.ratt .bokstav { background: var(--ratt); color: var(--yta); }
.alternativ.fel .bokstav { background: var(--fel); color: var(--yta); }
.alt-text { min-width: 0; }

.baksida { background: var(--yta-2); border-radius: 12px; padding: 16px; margin: 12px 0; font-size: 1.15rem; overflow-x: auto; }
.bedomning p { margin: 12px 0 0; font-weight: 600; }

/* ---------- lösning */

.losning {
  border-radius: var(--radie);
  padding: 16px 18px;
  margin: 20px 0 0;
  border: 1px solid var(--kant);
  background: var(--yta);
  scroll-margin-top: 12px;
}
.losning.ratt { border-left: 6px solid var(--ratt); }
.losning.fel { border-left: 6px solid var(--fel); }
.status { display: flex; align-items: center; gap: 10px; font-size: 1.25rem; }
.losning.ratt .status { color: var(--ratt); }
.losning.fel .status { color: var(--fel); }
.status-ikon {
  display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  color: var(--yta); font-size: 1.1rem;
}
.losning.ratt .status-ikon { background: var(--ratt); }
.losning.fel .status-ikon { background: var(--fel); }
.anmarkning { background: var(--varning-bg); border-radius: 10px; padding: 10px 14px; }
/* Vid fel svar är bara rubriken och markeringen (kantlinje, ikon) röda – facit, kommentar och
   lösningsstegen står i neutral textfärg så att de går att läsa. */
.losning, .losning .svarsrader dd, .losning .steg, .losning .steg li, .losning .felkommentar { color: var(--text); }
.losning .katex { color: inherit; }
.felkommentar { background: var(--yta-2); border-left: 4px solid var(--fel); border-radius: 10px; padding: 10px 14px; white-space: pre-line; }
.svarsrader { display: grid; grid-template-columns: auto 1fr; gap: 4px 14px; margin: 8px 0 12px; align-items: baseline; }
.svarsrader dt { color: var(--dampad); font-size: .9rem; }
.svarsrader dd { margin: 0; font-weight: 600; overflow-x: auto; }
.hel-losning { margin: 8px 0 12px; }
.hel-losning summary, .formelkort summary {
  cursor: pointer; min-height: 44px; display: flex; align-items: center;
  font-weight: 600; color: var(--primar);
}
.steg { padding-left: 1.4em; margin: 8px 0; }
.steg li { margin-bottom: .6em; white-space: pre-line; overflow-x: auto; }
.nasta { width: 100%; min-height: 56px; margin-top: 8px; }
.rapport { margin-top: 8px; display: flex; flex-direction: column; gap: 8px; }
.rapport label { font-weight: 600; font-size: .95rem; }
textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--yta);
  border: 1px solid var(--kant); border-radius: 10px; padding: 10px 12px; resize: vertical;
}

.exempel-del { background: var(--yta); border: 1px solid var(--kant); border-left: 6px solid var(--accent); border-radius: var(--radie); padding: 16px 18px; }

/* ---------- klart */

.klart { text-align: center; }
.klart-ikon {
  display: inline-grid; place-items: center; width: 64px; height: 64px; margin: 4px auto 8px;
  border-radius: 50%; background: var(--ratt); color: var(--yta); font-size: 2rem; font-weight: 700;
}

/* ---------- listor */

.flikar { display: flex; gap: 8px; margin-bottom: 16px; }
.flik {
  flex: 1; display: flex; align-items: center; justify-content: center; min-height: var(--tryck);
  border: 1px solid var(--kant); border-radius: 12px; text-decoration: none; color: var(--text); font-weight: 600;
  background: var(--yta);
}
.flik.aktiv { background: var(--primar); color: var(--primar-text); border-color: var(--primar); }

.formelgrupp { margin-bottom: 20px; }
.formelkort {
  background: var(--yta); border: 1px solid var(--kant); border-radius: 12px;
  padding: 4px 16px; margin-bottom: 8px; overflow-x: auto;
}
.formelkort summary { color: var(--text); font-weight: 500; padding: 6px 0; }
.formelkort[open] { padding-bottom: 12px; }
.formelkort .baksida-text { font-size: 1.1rem; margin: 4px 0 8px; }

.mall-lista, .rapport-lista { list-style: none; padding: 0; margin: 0 0 8px; display: flex; flex-direction: column; gap: 8px; }
.mall-info { font-weight: 400; font-size: .85rem; color: var(--dampad); }
.json { white-space: pre-wrap; word-break: break-all; font-size: .8rem; background: var(--yta-2); padding: 12px; border-radius: 10px; }

/* ---------- uppdateringsbanner */

.uppdatering {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(16px + env(safe-area-inset-bottom));
  width: min(600px, calc(100% - 32px));
  min-height: 56px; padding: 12px 18px;
  border: none; border-radius: 14px;
  background: var(--primar); color: var(--primar-text);
  font: inherit; font-weight: 700;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .25);
  cursor: pointer; z-index: 20;
}

/* ---------- formulär (konto, koppla, köp) */

label { display: block; font-weight: 600; font-size: .95rem; margin: 10px 0 4px; }
input[type=text], input[type=email] {
  width: 100%; min-height: var(--tryck); font: inherit; color: var(--text); background: var(--yta);
  border: 1px solid var(--kant); border-radius: 10px; padding: 10px 12px;
}
input.kodfalt { font-size: 1.4rem; letter-spacing: .12em; text-transform: uppercase; font-variant-numeric: tabular-nums; }
.kryss { display: flex; gap: 12px; align-items: flex-start; margin: 14px 0; }
.kryss input { flex: none; width: 24px; height: 24px; margin: 2px 0 0; accent-color: var(--primar); }
.kryss label { margin: 0; font-weight: 500; }
.pris { font-size: 1.15rem; }
.pris strong { font-size: 1.6rem; }
.ingar { padding-left: 1.3em; }
.ingar li { margin-bottom: .35em; }
.status-rad.ok { color: var(--ratt); font-weight: 600; }
.kvitto-ruta { background: var(--ratt-bg); border: 1px solid var(--ratt); border-radius: 12px; padding: 12px 16px; }
details.radera summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; font-weight: 600; color: var(--fel); }

/* ---------- kopplingskod och QR */

.kopplingskod {
  font-size: 2.1rem; font-weight: 800; letter-spacing: .12em; text-align: center;
  font-variant-numeric: tabular-nums; margin: 12px 0 4px; user-select: all; -webkit-user-select: all;
}
.kopplingskod.liten-kod { font-size: 1.3rem; letter-spacing: .06em; }
.kopplingskod.utgangen { text-decoration: line-through; opacity: .5; }
.qr-ram { display: flex; justify-content: center; margin: 8px 0 12px; }
.qr { width: min(220px, 70vw); height: auto; border-radius: 8px; }

/* ---------- låsta uppgifter */

.last-kort { text-align: center; }
.las-ikon { font-size: 2rem; margin: 0; }