/* ==========================================================================
   Festival Křídla 2026
   Paleta i motivy vytažené z letošního plakátu (linoryt, Kridla26_*).
   --------------------------------------------------------------------------
   cerna    #0A0A0A   pozadi
   oranzova #FF5E2A   akcent, nazvy kapel
   papir    #F3E9CD   svetle plochy a text na cerne
   tmava or #B2411D   odkazy na papirovem podkladu (kontrast 4.7:1)

   Hero se sklada ze tri vrstev (obloha + husa + headline), aby se dokazal
   prizpusobit libovolnemu pomeru stran. Neni to jeden plochy orez.
   ========================================================================== */

/* --- Sancreek (SIL OFL 1.1), hostovano lokalne v css/fonts/ ---------------
   Ma plnou ceskou diakritiku vcetne Ř Ě Ů - overeno v cmap tabulce fontu.
   Existuje jen jeden rez, proto vsude font-weight: normal; jinak si
   prohlizec dokresli falesny bold a rozmaze kresbu pisma. */
@font-face {
  font-family: 'Sancreek';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/sancreek-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Sancreek';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/sancreek-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --black:       #0A0A0A;
  --orange:      #FF5E2A;
  --paper:       #F3E9CD;
  --paper-light: #FAF4E3;
  --orange-dark: #B2411D;
  --ink:         #16120F;

  --display: 'Sancreek', Georgia, 'Times New Roman', serif;
  /* patkove pismo pusobi tistene; bezpatkovy systemovy font delal z webu aplikaci */
  --text: ui-serif, Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;

  /* jemna diagonalni srafura - ohlas destovych car z linorytu */
  --hatch: repeating-linear-gradient(115deg,
            rgba(243, 233, 205, .05) 0 1px,
            transparent 1px 8px);

  /* zrnitost papiru - generovana pres feTurbulence, zadny extra soubor */
  --grain: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='180' height='180'><filter id='g'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/><feColorMatrix type='saturate' values='0'/></filter><rect width='180' height='180' filter='url(%23g)'/></svg>");
  /* roztrzena hrana papiru, dlazdice navazuje pri repeat-x */
  --torn: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='22'><path d='M0,22 L0,11 L16,9 L39,4 L53,18 L64,19 L79,16 L96,16 L112,3 L129,7 L143,9 L168,15 L189,10 L199,3 L218,6 L244,4 L254,17 L274,13 L297,16 L300,11 L300,22 Z' fill='%23F3E9CD'/></svg>");

  /* cerne natrzeni pro spodni hranu papiru, jiny seed nez horni */
  --torn-dark: url("data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' width='300' height='22'><path d='M0,22 L0,11 L15,12 L35,18 L46,11 L69,18 L95,4 L114,11 L136,18 L146,8 L167,5 L185,4 L195,7 L207,16 L217,16 L232,4 L258,3 L274,17 L289,4 L300,11 L300,22 Z' fill='%230A0A0A'/></svg>");

  --pad: clamp(1.25rem, 5vw, 3rem);
  --section: clamp(3.5rem, 9vw, 7rem);
  --wrap: 74rem;
}

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

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

body {
  margin: 0;
  background: var(--black);
  color: var(--paper);
  font-family: var(--text);
  font-size: 100%;
  line-height: 1.55;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, p, ol { margin: 0; }
ol { list-style: none; padding: 0; }

a { color: var(--orange); }

::selection { background: var(--orange); color: #000; }

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

/* skryto vizualne, ale ctou to odecitace obrazovky */
.vh {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

.skip {
  position: absolute; left: -9999px;
  background: var(--orange); color: #000;
  padding: .75rem 1.25rem; font-weight: 700; text-decoration: none; z-index: 10;
}
.skip:focus { left: 1rem; top: 1rem; }

/* ==========================================================================
   HERO
   ========================================================================== */

.hero { background: var(--black); }

.hero__stage {
  position: relative;
  aspect-ratio: 3 / 4;
  background-image: url("../images/sky-portrait.jpg");
  background-size: cover;
  background-position: center bottom;
  overflow: hidden;
}

.hero__logo {
  position: absolute;
  z-index: 2;
  top: 4%;
  left: 50%;
  width: min(88%, 60rem);
  transform: translateX(-50%);
  margin: 0;
  line-height: 0;
  /* oddeli oranzove pismo od tmaveho kridla husy, kdyz se prekryji */
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, .35));
}

/* max-height + object-fit drzi husu uvnitr sceny i kdyz se meni pomer stran,
   jinak by pri sirokem hero pretekla dolu a orezala se o overflow: hidden */
.hero__goose {
  position: absolute;
  z-index: 1;
  top: 27%;
  left: 50%;
  width: min(94%, 44rem);
  max-height: 60%;
  object-fit: contain;
  transform: translateX(-50%);
  animation: float 9s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, -2.2%); }
}

/* Easter egg: po kliknuti husa odleti doprava, chvili pocka za okrajem
   a vrati se zleva. Teleport mezi 17 % a 17.01 % je mimo viditelnou plochu,
   takze skok neni videt. Kazdy usek ma vlastni easing - zrychleni pri odletu,
   dojezd pri navratu. Stage ma overflow: hidden, takze nic nepretece. */
@keyframes flyaway {
  0% {
    transform: translate(-50%, 0);
    animation-timing-function: cubic-bezier(.5, 0, .9, .35);
  }
  17% {
    transform: translate(150vw, -14%) rotate(-5deg);
  }
  17.01% {
    transform: translate(-210vw, -14%) rotate(-5deg);
    animation-timing-function: linear;
  }
  58% {
    transform: translate(-210vw, -14%) rotate(-5deg);
    animation-timing-function: cubic-bezier(.16, .7, .3, 1);
  }
  100% {
    transform: translate(-50%, 0);
  }
}

.hero__goose.is-flying { animation: flyaway 7s 1; }

.hero__meta {
  max-width: var(--wrap);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 3.5rem) var(--pad) clamp(2.5rem, 7vw, 4rem);
  display: grid;
  gap: clamp(1.25rem, 3vw, 2rem);
  justify-items: center;
  text-align: center;
}

.hero__year {
  font-family: var(--display);
  font-size: clamp(4rem, 17vw, 8.5rem);
  line-height: .85;
  color: var(--orange);
  letter-spacing: .02em;
}

.hero__date {
  font-family: var(--display);
  font-size: clamp(1.6rem, 5.5vw, 2.6rem);
  line-height: 1.1;
  color: var(--paper);
}

.hero__place {
  margin-top: .5rem;
  font-size: clamp(.9rem, 2.4vw, 1.05rem);
  color: rgba(243, 233, 205, .68);
}

/* --- listkovy odznacek, ohlas oranzoveho listku z plakatu --- */
.ticket {
  display: inline-grid;
  gap: .1rem;
  justify-items: center;
  background: var(--orange);
  color: #000;
  text-decoration: none;
  padding: .85rem 2rem;
  border: 2px dashed rgba(0, 0, 0, .38);
  transform: rotate(-2.5deg);
  box-shadow: 7px 7px 0 rgba(0, 0, 0, .75);
  transition: transform .18s ease, box-shadow .18s ease;
}
.ticket:hover,
.ticket:focus-visible {
  transform: rotate(0deg) translateY(-2px);
  box-shadow: 10px 10px 0 rgba(0, 0, 0, .8);
}
.ticket__label { font-family: var(--display); font-size: 1.7rem; line-height: 1.1; }
.ticket__note {
  font-size: .7rem; font-weight: 700;
  letter-spacing: .2em; text-transform: uppercase;
}

/* ==========================================================================
   PROGRAM
   ========================================================================== */

.lineup {
  background-color: var(--black);
  background-image: var(--hatch);
  padding: var(--section) var(--pad);
  border-top: 6px solid var(--orange);
}

.days {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
}

.day__name {
  font-family: var(--display);
  font-size: clamp(2rem, 6vw, 2.9rem);
  line-height: 1.1;
  color: var(--paper);
  padding-bottom: .5rem;
  margin-bottom: .5rem;
  border-bottom: 5px solid var(--orange);
}
.day__date { color: var(--orange); }

.act {
  display: grid;
  grid-template-columns: 4.25rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: .9rem 0;
  border-bottom: 1px solid rgba(243, 233, 205, .14);
}

.act__time {
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .05em;
  color: rgba(243, 233, 205, .62);
  font-variant-numeric: tabular-nums;
}

.act__name {
  font-family: var(--display);
  font-size: clamp(1.45rem, 4.6vw, 2.05rem);
  line-height: 1.15;
  color: var(--orange);
}

/* ==========================================================================
   INFO
   ========================================================================== */

.info {
  position: relative;
  background: var(--paper);
  color: var(--ink);
  padding: calc(var(--section) + 1rem) var(--pad) 0;
}

/* papir natrzeny pres cerne pozadi misto rovne linky */
.info::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -1px;
  height: 22px;
  background: var(--torn) repeat-x;
  background-size: 300px 22px;
}

/* zrno pres celou plochu vcetne textu - jako tisk na papir */
.info::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grain);
  mix-blend-mode: multiply;
  opacity: .42;
  pointer-events: none;
}

.lead {
  max-width: 42rem;
  margin: 0 auto clamp(2.5rem, 6vw, 4rem);
  font-size: clamp(1.15rem, 2.7vw, 1.5rem);
  line-height: 1.6;
  text-wrap: pretty;
}

/* iniciala - typicka pro tistenou sazbu, ne pro landing page */
.lead::first-letter {
  float: left;
  font-family: var(--display);
  font-size: 3.6em;
  line-height: .78;
  margin: .04em .1em 0 0;
  color: var(--orange-dark);
}

.cards {
  max-width: var(--wrap);
  margin: 0 auto;
  display: grid;
  gap: 1.25rem;
}

.card {
  background: var(--paper-light);
  padding: clamp(1.25rem, 3vw, 1.75rem);
  box-shadow: 4px 5px 0 rgba(22, 18, 15, .17);
}

/* Kazdy papirek jinak nakriveny a jinak vysoko, at to nevypada
   jako mrizka boxu ale jako neco nalepeneho na plakat.
   Trida .reveal je zamerne na obalu .cards, ne na kartach - jinak by si
   obe pravidla prebijela transform a zaleželo by na poradi v souboru. */
.cards > .card:nth-child(1) { transform: rotate(-.55deg) translateY(6px); }
.cards > .card:nth-child(2) { transform: rotate(.4deg)  translateY(-8px); }
.cards > .card:nth-child(3) { transform: rotate(-.25deg) translateY(3px); }
.card p + p { margin-top: .6rem; }
.card a { color: var(--orange-dark); }

.card__title {
  font-family: var(--display);
  font-size: 1.55rem;
  line-height: 1.2;
  color: var(--orange-dark);
  margin-bottom: .7rem;
  padding-bottom: .4rem;
  border-bottom: 4px solid var(--ink);
}

/* ==========================================================================
   PATICKA
   ========================================================================== */

/* Papir se dole dotrhne a pod nim pokracuje cerna paticka.
   Zaporne postranni okraje vytahnou pas z vnitrniho odsazeni .info ven,
   jinak by natrzeni neslo az k okrajum obrazovky. */
.tear {
  height: 22px;
  margin: clamp(2.5rem, 7vw, 4.5rem) calc(-1 * var(--pad)) 0;
  background: var(--torn-dark) repeat-x;
  background-size: 300px 22px;
}

.footer {
  background: var(--black);
  background-image: var(--hatch);
  padding: clamp(2rem, 5vw, 3.5rem) var(--pad) var(--section);
  text-align: center;
}
.footer__social { font-size: clamp(1.05rem, 3vw, 1.3rem); }
.footer__by { margin-top: 1rem; font-size: .9rem; color: rgba(243, 233, 205, .6); }

/* ==========================================================================
   ANIMACE PRI SCROLLOVANI
   ========================================================================== */

/* Skryva se jen kdyz je jisté, ze JS bezi a zase to odkryje.
   Bez toho by pri vypnutem nebo spadlem JS zustal obsah navzdy neviditelny. */
.js .reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .65s ease, transform .65s ease;
}
.js .reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================================
   VETSI OBRAZOVKY
   ========================================================================== */

/* tablet - portretovy hero by na sirsi obrazovce zabral cely displej,
   proto se poměr postupně naklápí do šířky */
@media (min-width: 40rem) {
  .hero__stage {
    aspect-ratio: 4 / 3;
    background-image: url("../images/sky-wide.jpg");
  }
  .hero__logo { top: 4%; width: min(60%, 34rem); }
  .hero__goose { top: 31%; width: min(72%, 42rem); max-height: 64%; }
}

@media (min-width: 48rem) {
  .cards { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 56rem) {
  .days { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 62rem) {
  .hero__stage {
    aspect-ratio: 16 / 9;
    background-image: url("../images/sky-wide.jpg");
  }
  .hero__logo { top: 3%; width: min(44%, 38rem); }
  .hero__goose { top: 28%; width: min(58%, 42rem); max-height: 68%; }

  .hero__meta {
    grid-template-columns: auto 1fr auto;
    align-items: center;
    justify-items: start;
    text-align: left;
    gap: clamp(2rem, 5vw, 4rem);
  }
  .hero__year { line-height: .8; }
  .hero__place { margin-top: .35rem; }
}

/* ==========================================================================
   OMEZENI POHYBU
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  .hero__goose,
  .hero__goose.is-flying { animation: none; }
  .js .reveal { opacity: 1; transform: none; transition: none; }
  .ticket { transition: none; }
  html { scroll-behavior: auto; }
}