/*
 * One hand-written stylesheet. No framework, no build step, no CDN.
 *
 * Lightweight, minimal, cosy: a warm off-white ground, one muted green, generous
 * whitespace, soft rounded shapes drawn slightly off-square so nothing looks stamped
 * out. No gradients and no stacked shadows.
 *
 * Every colour pair below was measured, not eyeballed -- tools/kontrast.py computes
 * the WCAG ratio and tests/test_gestaltung.py fails the build if one slips under AA.
 */

/* --- the typeface ------------------------------------------------------- */

/*
 * Open Sans, subset to Latin and the punctuation German actually uses, 13 kB a cut.
 * Self-hosted: nothing is fetched from anywhere else, ever. See static/schrift/.
 */
@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("../schrift/open-sans-400.woff2") format("woff2");
}

@font-face {
  font-family: "Open Sans";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("../schrift/open-sans-700.woff2") format("woff2");
}

/* --- the palette -------------------------------------------------------- */

:root {
  --farbe-grund: #faf7f2;
  --farbe-karte: #fffdfa;
  --farbe-text: #2c2a27;      /* 13.4:1 on the ground */
  --farbe-leise: #67625b;     /*  5.7:1 -- still AA for body text */
  --farbe-akzent: #556a58;    /*  5.5:1 both ways, so it works as fill and as text */
  --farbe-linie: #e0d9cd;
  --farbe-warnung: #8c3b3b;   /*  7.0:1 */

  --schrift: "Open Sans", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* 18px floor, and it grows a little on a roomy screen. */
  --text-groesse: 18px;
  --abstand: 1.5rem;
  --radius: 14px;
  /* Drawn off-square on purpose: a mat should look laid down, not printed. */
  --radius-hand: 18px 22px 16px 20px;
  --tap-min: 44px;
}

@media (min-width: 40rem) {
  :root {
    --text-groesse: 19px;
    --abstand: 2rem;
  }
}

/* --- the page ----------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--farbe-grund);
  color: var(--farbe-text);
  font-family: var(--schrift);
  font-size: var(--text-groesse);
  line-height: 1.6;
  /* Long German words must wrap rather than push the page sideways at 320px. */
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin: 2rem 0 0.75rem;
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  margin-top: 0;
  font-size: 1.6rem;
}

h2 {
  font-size: 1.25rem;
}

h3 {
  font-size: 1.05rem;
}

p {
  margin: 0 0 1rem;
}

a {
  color: var(--farbe-akzent);
  text-underline-offset: 0.2em;
}

a:hover {
  color: var(--farbe-text);
}

code {
  font-family: ui-monospace, "SFMono-Regular", "Consolas", monospace;
  font-size: 0.95em;
}

hr {
  margin: var(--abstand) 0;
  border: 0;
  border-top: 1px solid var(--farbe-linie);
}

/* One focus style everywhere, and it is never removed. */
:focus-visible {
  outline: 3px solid var(--farbe-akzent);
  outline-offset: 3px;
  border-radius: 4px;
}

.kopf {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--abstand);
  border-bottom: 1px solid var(--farbe-linie);
}

/* The Kursleitung's way in: present on every page, loud on none. */
.kopf__verwaltung {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
  color: var(--farbe-leise);
  font-size: 0.9rem;
}

.kopf__verwaltung:hover {
  color: var(--farbe-text);
}

/* The mark is an image, so the header carries no wordmark of its own. */
.kopf__marke {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-min);
}

.kopf__marke img {
  display: block;
  width: 44px;
  height: 44px;
}

.inhalt {
  margin: 0 auto;
  max-width: 38rem;
  padding: var(--abstand) 1.25rem 3rem;
}

.fuss {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0 auto;
  max-width: 38rem;
  padding: 1.25rem;
  border-top: 1px solid var(--farbe-linie);
  font-size: 0.9rem;
}

.nebensache {
  display: block;
  color: var(--farbe-leise);
  font-size: 0.9rem;
}

/*
 * On a table cell the class may only soften the text. `display: block` takes the
 * cell out of its row -- the browser then wraps the remaining cells in an anonymous
 * table -- and every column after it lands in the wrong place.
 */
td.nebensache {
  display: table-cell;
}

.nur-fuer-screenreader {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  white-space: nowrap;
  clip-path: inset(50%);
}

/* --- messages ----------------------------------------------------------- */

.meldungen {
  margin: 0 0 var(--abstand);
  padding: 0;
  list-style: none;
}

.meldung {
  margin: 0 0 0.75rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--farbe-linie);
  border-left: 4px solid var(--farbe-akzent);
  border-radius: var(--radius);
  background: var(--farbe-karte);
}

.meldung--fehler {
  border-left-color: var(--farbe-warnung);
}

/* --- forms and buttons -------------------------------------------------- */

.formular {
  margin: 0 0 var(--abstand);
}

.formular label,
.wahl legend {
  display: block;
  margin-bottom: 0.35rem;
  font-weight: 700;
}

.formular input[type="text"],
.formular input[type="password"],
.formular input[type="number"],
.formular input[type="date"],
.formular input[type="time"],
.formular input[type="file"],
.formular select,
.formular textarea {
  width: 100%;
  min-height: var(--tap-min);
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--farbe-linie);
  border-radius: var(--radius);
  background: var(--farbe-karte);
  color: inherit;
  font: inherit;
}

.formular input[type="number"] {
  width: 9rem;
}

.formular textarea {
  min-height: 6rem;
  line-height: 1.5;
}

.knopf {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--tap-min);
  min-width: var(--tap-min);
  padding: 0.6rem 1.25rem;
  border: 2px solid var(--farbe-akzent);
  border-radius: var(--radius);
  background: transparent;
  color: var(--farbe-akzent);
  font: inherit;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

.knopf + .knopf {
  margin-left: 0.5rem;
}

.knopf:hover {
  background: var(--farbe-karte);
}

.knopf--primaer {
  background: var(--farbe-akzent);
  color: var(--farbe-grund);
}

.knopf--primaer:hover {
  background: var(--farbe-text);
  border-color: var(--farbe-text);
  color: var(--farbe-grund);
}

/* Beside something else rather than under it: "Figur ändern" next to the figure. */
.knopf--klein {
  min-height: 2.25rem;
  padding: 0.25rem 0.75rem;
  border-width: 1px;
  font-size: 0.85rem;
  font-weight: 400;
}

/* The one a participant is meant to hit without aiming. */
.knopf--gross {
  width: 100%;
  min-height: 3.5rem;
  font-size: 1.05rem;
}

.knopf--warnung {
  border-color: var(--farbe-warnung);
  color: var(--farbe-warnung);
}

.knopf--warnung:hover {
  background: var(--farbe-warnung);
  color: var(--farbe-grund);
}

.knopf[disabled] {
  cursor: default;
  opacity: 0.55;
}

/* A control that reads as a link but posts, so it can carry a CSRF token. */
.knopf-als-link {
  min-height: var(--tap-min);
  padding: 0.5rem 0;
  border: 0;
  background: none;
  color: var(--farbe-akzent);
  font: inherit;
  text-align: left;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  cursor: pointer;
}

.knopf-als-link:hover {
  color: var(--farbe-text);
}

.bestaetigung {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  font-weight: 400;
}

.bestaetigung input[type="checkbox"] {
  width: 1.4rem;
  height: 1.4rem;
  min-height: 0;
  accent-color: var(--farbe-akzent);
}

.geheimnis,
.codeliste code {
  font-family: ui-monospace, "SFMono-Regular", "Consolas", monospace;
  letter-spacing: 0.06em;
  overflow-wrap: anywhere;
}

.codeliste {
  margin: 0 0 var(--abstand);
  padding: 0;
  list-style: none;
}

.codeliste li {
  padding: 0.3rem 0;
}

/* --- picking a figure --------------------------------------------------- */

.wahl {
  margin: 0 0 var(--abstand);
  padding: 0;
  border: 0;
}

.wahl__reihe {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 0.6rem;
}

/* Visually hidden, still focusable and still the thing being clicked. */
.wahl__feld input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.wahl__marke {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  min-height: 52px;
  padding: 0.35rem;
  border: 2px solid var(--farbe-linie);
  border-radius: var(--radius);
  background: var(--farbe-karte);
  cursor: pointer;
}

.wahl__feld input:checked + .wahl__marke {
  border-color: var(--farbe-text);
  border-width: 3px;
}

.wahl__feld input:focus-visible + .wahl__marke {
  outline: 3px solid var(--farbe-akzent);
  outline-offset: 3px;
}

.wahl__farbe {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: currentcolor;
}

/* --- the "this name exists" question ----------------------------------- */

/* A card in the flow of the page, not an overlay: nothing to get stuck behind. */
.frage {
  margin: 0 0 var(--abstand);
  padding: 1.25rem;
  border: 1px solid var(--farbe-linie);
  border-left: 4px solid var(--farbe-akzent);
  border-radius: var(--radius);
  background: var(--farbe-karte);
}

.frage__titel {
  font-weight: 700;
}

.frage__wahl {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin: 0;
}

/* These are stacked, so the horizontal rule between buttons would misplace them. */
.frage__wahl .knopf + .knopf {
  margin-left: 0;
}

/* --- avatars ------------------------------------------------------------ */

/* Every one measured against the ground; the lowest is 5.4:1. */
:root {
  --avatar-0: #4d6250;
  --avatar-1: #7a6140;
  --avatar-2: #6b5c7e;
  --avatar-3: #456575;
  --avatar-4: #875543;
  --avatar-5: #4e6552;
  --avatar-6: #75536a;
  --avatar-7: #49535f;
}

.avatar {
  display: block;
}

.avatar--farbe-0 { color: var(--avatar-0); }
.avatar--farbe-1 { color: var(--avatar-1); }
.avatar--farbe-2 { color: var(--avatar-2); }
.avatar--farbe-3 { color: var(--avatar-3); }
.avatar--farbe-4 { color: var(--avatar-4); }
.avatar--farbe-5 { color: var(--avatar-5); }
.avatar--farbe-6 { color: var(--avatar-6); }
.avatar--farbe-7 { color: var(--avatar-7); }

.ich {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin: 0 0 var(--abstand);
  font-weight: 700;
}

/* --- Termine and their mats --------------------------------------------- */

.termin {
  margin: 0 0 1.25rem;
  padding: 1.25rem;
  border: 1px solid var(--farbe-linie);
  border-radius: var(--radius-hand);
  background: var(--farbe-karte);
}

.termin--zu {
  background: transparent;
  color: var(--farbe-leise);
}

/* A card you are on. The accent edge is the same one your own mat carries. */
.termin--meine {
  border-left: 4px solid var(--farbe-akzent);
}

.termin__marke {
  margin: 0 0 0.5rem;
  color: var(--farbe-akzent);
  font-size: 0.9rem;
  font-weight: 700;
}

/* One sentence from the Kursleiterin about this Termin. Everybody attending sees it. */
.ankuendigung {
  margin: 0 0 1rem;
  padding: 0.6rem 0.85rem;
  border-left: 4px solid var(--farbe-akzent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--farbe-grund);
}

/* Which Gruppe a Termin belongs to -- only guests, who see all of them, need it. */
.termin__gruppe {
  margin: 0;
  color: var(--farbe-leise);
  font-size: 0.9rem;
  font-weight: 700;
}

.termin__zeit {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
}

.matten {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
  gap: 0.65rem;
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
}

.matten__platz {
  margin: 0;
}

/*
 * A mat is a picture of a mat: static/bilder/matte-*.svg, drawn behind whatever the
 * mat carries. Those files are placeholders -- replacing them changes every mat in
 * the app and nothing else.
 */
.matte {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.1rem;
  width: 100%;
  min-height: 88px;
  /* The proportions of the sprite, so the artwork is never squashed. */
  aspect-ratio: 72 / 112;
  padding: 0.4rem 0.25rem;
  border: 0;
  background: transparent center / contain no-repeat;
  background-image: url("../bilder/matte-frei.svg");
  color: inherit;
  font: inherit;
  line-height: 1.2;
}

button.matte {
  cursor: pointer;
}

button.matte:hover {
  /* The mat lifts slightly rather than changing colour: no new ink, just a nudge. */
  transform: translateY(-2px);
}

/* A Termin that is over or cancelled: its mats fade with the rest of the card. */
.termin--zu .matte {
  opacity: 0.6;
}

.matte--belegt {
  background-image: url("../bilder/matte-belegt.svg");
}

.matte--meine {
  background-image: url("../bilder/matte-meine.svg");
}

.matte__nummer {
  color: var(--farbe-leise);
  font-size: 0.85rem;
}

.matte__marke {
  color: var(--farbe-akzent);
  font-size: 0.7rem;
  font-weight: 700;
  text-align: center;
}

/* --- lists and tables --------------------------------------------------- */

.liste {
  margin: 0 0 var(--abstand);
  padding: 0;
  list-style: none;
}

.liste__eintrag {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--farbe-linie);
}

.liste__eintrag--abgesagt,
.liste__eintrag--vergangen {
  color: var(--farbe-leise);
}

.tabelle {
  width: 100%;
  margin: 0 0 var(--abstand);
  border-collapse: collapse;
}

.tabelle th,
.tabelle td {
  padding: 0.6rem 0.4rem;
  border-bottom: 1px solid var(--farbe-linie);
  text-align: left;
  vertical-align: top;
}

.tabelle th {
  font-size: 0.9rem;
}

.tabelle form {
  margin: 0;
}

.haken {
  width: 3.5rem;
}

/* --- on paper ----------------------------------------------------------- */

@media print {
  .kopf,
  .fuss,
  .meldungen,
  .nicht-drucken {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  .inhalt {
    max-width: none;
    padding: 0;
  }

  .tabelle th,
  .tabelle td {
    border-bottom: 1px solid #999;
  }

  .haken {
    height: 2rem;
  }
}