* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* kit z typekitu nie ma ą ć ę ł ń ś ź ż — te litery idą z plex mono, jak na kmprk.pl */
@font-face {
  font-family: "kmprk-pl";
  src: url("/fonts/plex-mono-pl-400.woff2") format("woff2");
  font-weight: 400;
  size-adjust: 103.3%;
  unicode-range: U+0104-0107, U+0118-0119, U+0141-0144, U+015A-015B, U+0179-017C;
}

@font-face {
  font-family: "kmprk-pl";
  src: url("/fonts/plex-mono-pl-700.woff2") format("woff2");
  font-weight: 700;
  size-adjust: 103.3%;
  unicode-range: U+0104-0107, U+0118-0119, U+0141-0144, U+015A-015B, U+0179-017C;
}

:root {
  --ink: #111;
  --paper: #fcfcfb;
  --muted: #8a8a8a;
  --line: #e2e2e0;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

/* bez widocznego suwaka — przewijanie dalej działa */
html {
  scrollbar-width: none;
}

html::-webkit-scrollbar {
  display: none;
}

body {
  font-family: "lft-etica-mono", "kmprk-pl", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-weight: 700;
  background: var(--paper);
  color: var(--ink);
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

/* --- header --- */

header {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: clamp(12px, 2.4vh, 22px) 48px;
}

header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--ink);
  transform-origin: left;
  animation: draw 1.1s var(--ease) both;
}

.logo {
  font-size: 1.3rem;
  letter-spacing: -.01em;
  color: var(--ink);
  text-decoration: none;
}

.caret {
  display: inline-block;
  width: .5em;
  height: .95em;
  margin-left: 3px;
  vertical-align: -.1em;
  background: var(--ink);
  animation: blink 1.06s steps(1) infinite;
}

/* --- main --- */

/* odstępy liczone od wysokości okna, żeby całość mieściła się na jednym ekranie bez suwaka */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 4.5vh, 56px);
  padding: clamp(20px, 5vh, 56px) 48px clamp(20px, 4vh, 48px);
}

main > section {
  animation: rise .8s var(--ease) both;
}
main > section:nth-child(2) { animation-delay: .12s; }
main > section:nth-child(3) { animation-delay: .24s; }

[hidden] {
  display: none !important;
}

/* podpis z krótką kreską przed, jak numer rozdziału */
.index {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 400;
  font-size: .8rem;
  letter-spacing: .04em;
  color: var(--muted);
  margin-bottom: 14px;
}

.index::before {
  content: "";
  width: 32px;
  height: 1px;
  background: currentColor;
}

.num {
  font-variant-numeric: tabular-nums;
  white-space: pre;
}

/* cyfra, która się zmieniła, wjeżdża od dołu */
.num .d {
  display: inline-block;
}

.num .d.tick {
  animation: tick .42s var(--ease);
}

.big {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 40px;
  line-height: .9;
  letter-spacing: -.04em;
}

.unit {
  display: inline-flex;
  align-items: baseline;
  gap: 16px;
}

.big .unit .num {
  font-size: clamp(3.4rem, min(17vw, 18vh), 13rem);
}

.big .lbl {
  font-size: clamp(1.4rem, 3vw, 2.4rem);
  letter-spacing: -.02em;
}

.progress {
  position: relative;
  height: 6px;
  margin-top: clamp(14px, 3.5vh, 40px);
  background: var(--line);
  overflow: hidden;
}

.progress i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0;
  background: var(--ink);
  transition: width 1s linear;
}

.progress-label {
  margin-top: clamp(6px, 1.4vh, 12px);
  font-weight: 400;
  font-size: .85rem;
  color: var(--muted);
}

.progress-label span {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* --- karty --- */

.cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  border: 1px solid var(--ink);
}

.card {
  display: flex;
  flex-direction: column;
  padding: clamp(18px, 3.6vh, 32px) 36px clamp(20px, 4vh, 36px);
}

.card + .card {
  border-left: 1px solid var(--ink);
}

.card p {
  font-weight: 400;
  font-size: .9rem;
  line-height: 1.6;
  color: #4a4a4a;
}

/* dni nauki: odwrócone kolory, to jest najważniejsza liczba */
.card-ink {
  background: var(--ink);
  color: var(--paper);
}

.card-ink .index,
.card-ink p {
  color: #a5a5a3;
}

.huge {
  font-size: clamp(2.6rem, min(10vw, 10vh), 8rem);
  line-height: 1;
  letter-spacing: -.04em;
  margin: 8px 0 clamp(8px, 2vh, 18px);
}

.card h2 {
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -.03em;
}

.card .dates {
  margin-top: 6px;
}

.count-label {
  margin-top: clamp(10px, 2.4vh, 22px);
  font-weight: 400;
  font-size: .85rem;
  color: var(--muted);
}

.mid {
  font-size: clamp(1.6rem, min(4.6vw, 5.5vh), 3.6rem);
  line-height: 1;
  letter-spacing: -.035em;
  margin: 6px 0 10px;
}

/* --- strzałka do listy: na środku, przy dolnej krawędzi pierwszego ekranu --- */

.more {
  margin-top: auto;
  display: flex;
  justify-content: center;
}

.more-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 40px;
  border: 0;
  background: none;
  color: var(--ink);
  cursor: pointer;
}

.more-btn svg {
  width: 28px;
  height: 28px;
  animation: bob 2.4s var(--ease) 1.2s infinite;
  transition: transform .4s var(--ease);
}

.more-btn:hover svg,
.more-btn:focus-visible svg {
  animation-play-state: paused;
  transform: translateY(4px);
}

.more-btn:focus-visible {
  outline: 1px solid var(--ink);
  outline-offset: 2px;
}

.more-btn[aria-expanded="true"] svg {
  animation: none;
  transform: rotate(180deg);
}

/* --- lista kolejnych wolnych --- */

.upcoming {
  scroll-margin-top: 24px;
}

.upcoming .index {
  animation: rise .6s var(--ease) both;
}

.upcoming li {
  animation: rise .6s var(--ease) both;
  animation-delay: calc(.1s + var(--i, 0) * .05s);
}

.upcoming ol {
  list-style: none;
  border-bottom: 1px solid var(--line);
}

.upcoming li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto auto;
  align-items: baseline;
  gap: 24px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  font-weight: 400;
  font-size: .9rem;
}

.upcoming li b {
  font-weight: 700;
}

.upcoming .when {
  color: #4a4a4a;
}

/* długość wolnego */
.upcoming .len {
  min-width: 8ch;
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.upcoming .in {
  min-width: 11ch;
  white-space: nowrap;
  text-align: right;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.upcoming li.final {
  border-top-color: var(--ink);
}

/* --- footer --- */

footer {
  display: flex;
  justify-content: space-between;
  padding: clamp(10px, 1.8vh, 16px) 48px;
  border-top: 1px solid var(--ink);
  font-weight: 400;
  font-size: .8rem;
  color: var(--muted);
}

#now {
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

/* --- animacje --- */

@keyframes draw {
  from { transform: scaleX(0); }
}

@keyframes blink {
  50% { opacity: 0; }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
}

@keyframes bob {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(6px); }
}

@keyframes tick {
  from {
    opacity: 0;
    transform: translateY(.35em);
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* --- telefon --- */

@media (max-width: 860px) {
  header,
  main,
  footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  main {
    gap: clamp(16px, 3vh, 32px);
    padding-top: clamp(16px, 3vh, 32px);
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 18px 20px 20px;
  }

  /* na telefonie liczba i opis obok siebie, żeby karta była niska */
  .card-ink {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    column-gap: 20px;
  }

  .card-ink .index {
    grid-column: 1 / -1;
  }

  .card-ink .huge {
    font-size: clamp(2.4rem, 8vh, 4rem);
    margin: 0;
  }

  .card h2 {
    font-size: 1.3rem;
  }

  .mid {
    font-size: clamp(1.5rem, 4.4vh, 2.2rem);
  }

  .card p {
    font-size: .8rem;
    line-height: 1.5;
  }



  .card + .card {
    border-left: 0;
    border-top: 1px solid var(--ink);
  }

  .upcoming li {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 4px 16px;
  }

  .upcoming .when {
    grid-column: 1;
    grid-row: 2;
  }

  .upcoming .len {
    grid-column: 2;
    grid-row: 1;
  }

  .upcoming .in {
    grid-column: 2;
    grid-row: 2;
  }
}

/* bardzo niskie telefony (iphone se): podpis pod dniami nauki nie mieści się na ekranie */
@media (max-width: 860px) and (max-height: 700px) {
  .card-ink p {
    display: none;
  }

  .index {
    margin-bottom: 8px;
  }

  .card {
    padding: 14px 20px 16px;
  }

  .count-label {
    margin-top: 8px;
  }
}