/* Scoped, modern, "lux" grid for Algebra Bernays eKnjižnica */
.eknjiznica {
  --ek-bg: #ffffff;
  --ek-ink: #141617;
  --ek-muted: rgba(20,22,23,.62);
  --ek-line: rgba(20,22,23,.12);
  --ek-card: rgba(255,255,255,.86);
  --ek-shadow: 0 22px 60px rgba(20,22,23,.12);
  --ek-shadow2: 0 10px 28px rgba(20,22,23,.10);

  /* Accent (inspired by modern campus websites: clean + vibrant) */
  --ek-accent: #c40f61; /* safe vibrant accent */
  --ek-accent2: #e27526; /* second accent for gradients */

  --ek-radius: 22px;
  --ek-radius-sm: 14px;

  --ek-pad: clamp(18px, 2.2vw, 28px);
  --ek-max: 1240px;

  position: relative;
  background: var(--ek-bg);
  color: var(--ek-ink);
  border-radius: calc(var(--ek-radius) + 6px);
  overflow: clip;
}

.eknjiznica * { box-sizing: border-box; }

.eknjiznica__bg{
  position:absolute; inset:-2px;
  background:
    radial-gradient(1200px 520px at 12% -10%, rgba(196,15,97,.16), transparent 55%),
    radial-gradient(1000px 520px at 88% 0%, rgba(226,117,38,.14), transparent 60%),
    radial-gradient(820px 420px at 40% 110%, rgba(196,15,97,.12), transparent 62%),
    linear-gradient(180deg, rgba(20,22,23,.04), rgba(20,22,23,0));
  pointer-events:none;
}

.eknjiznica__header{
  position: relative;
  padding: calc(var(--ek-pad) + 10px) var(--ek-pad) 12px;
  max-width: var(--ek-max);
  margin: 0 auto;
}

.eknjiznica__kicker{
  display:inline-flex;
  gap:10px;
  align-items:center;
  font-weight: 650;
  font-size: 12px;
  letter-spacing:.12em;
  text-transform: uppercase;
  color: var(--ek-muted);
}

.eknjiznica__kicker::before{
  content:"";
  width: 10px; height:10px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ek-accent), var(--ek-accent2));
  box-shadow: 0 0 0 6px rgba(196,15,97,.12);
}

.eknjiznica__title{
  margin: 10px 0 8px;
  font-size: clamp(26px, 3vw, 50px)!important;
  line-height: 1.06;
  font-weight:bold;
  letter-spacing: -0.02em;
}

.eknjiznica__subtitle{
  margin: 0;
  max-width: 100%;
  color: var(--ek-muted);
  font-size: clamp(14px, 1.35vw, 16px);
  line-height: 1.6;
}

.eknjiznica__controls{
  position: relative;
  max-width: var(--ek-max);
  margin: 0 auto;
  padding: 10px var(--ek-pad) 12px;
  display: grid;
  grid-template-columns: 1.7fr 1fr 1fr;
  gap: 12px;
}

@media (max-width: 900px){
  .eknjiznica__controls{ grid-template-columns: 1fr; }
}

.eknjiznica__control{
  min-width: 0;
}

.eknjiznica__label{
  display:block;
  font-size: 12px;
  color: var(--ek-muted);
  margin: 0 0 8px;
  font-weight: 600;
}

.eknjiznica__inputwrap{
  position: relative;
  display:flex;
  align-items:center;
  background: rgba(255,255,255,.80);
  border: 1px solid var(--ek-line);
  border-radius: 999px;
  padding: 10px 44px 10px 44px;
  box-shadow: 0 8px 24px rgba(20,22,23,.06);
  backdrop-filter: blur(10px);
}

.eknjiznica__icon{
  position:absolute; left: 16px;
  color: rgba(20,22,23,.55);
}

.eknjiznica__input{
  width: 100%;
  border:0;
  outline:none;
  background:transparent;
  font-size: 14px;
  color: var(--ek-ink);
}

.eknjiznica__clear{
  position:absolute; right: 10px;
  width: 32px; height: 32px;
  border-radius: 999px;
  border:0;
  background: rgba(20,22,23,.06);
  color: rgba(20,22,23,.65);
  display:flex;
  align-items:center;
  justify-content:center;
  cursor:pointer;
  transition: transform .15s ease, background .15s ease;
}
.eknjiznica__clear:hover{ transform: scale(1.04); background: rgba(20,22,23,.10); }

.eknjiznica__select{
  width:100%;
  border: 1px solid var(--ek-line);
  background: rgba(255,255,255,.80);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--ek-ink);
  outline:none;
  box-shadow: 0 8px 24px rgba(20,22,23,.06);
  backdrop-filter: blur(10px);
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, rgba(20,22,23,.55) 50%),
    linear-gradient(135deg, rgba(20,22,23,.55) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) calc(1em + 2px),
    calc(100% - 13px) calc(1em + 2px);
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.eknjiznica__meta{
  position: relative;
  max-width: var(--ek-max);
  margin: 0 auto;
  padding: 0 var(--ek-pad) 10px;
  color: var(--ek-muted);
  font-size: 13px;
}

.eknjiznica__grid{
  position: relative;
  max-width: var(--ek-max);
  margin: 0 auto;
  padding: 6px var(--ek-pad) var(--ek-pad);
  display:grid;
  grid-template-columns: repeat(9, 1fr);
  gap: 14px;
}

@media (max-width: 1100px){
  .eknjiznica__grid{ gap: 12px; }
}

.ekcard{
  grid-column: span 3;
  display: block;
  text-decoration: none;
  color: inherit;
  background: var(--ek-card);
  border: 1px solid var(--ek-line);
  border-radius: var(--ek-radius);
  overflow: hidden;
  box-shadow: var(--ek-shadow2);
  transform: translateY(10px);
  opacity: 0;
  transition: transform .35s cubic-bezier(.2,.9,.2,1), opacity .35s ease, box-shadow .25s ease, border-color .25s ease;
  will-change: transform, opacity;
}

.ekcard.is-reveal{ transform: translateY(0); opacity: 1; }

@media (max-width: 1100px){ .ekcard{ grid-column: span 4; } }
@media (max-width: 760px){ .ekcard{ grid-column: span 6; } }
@media (max-width: 520px){ .ekcard{ grid-column: span 12; } }

.ekcard::before{
  content:"";
  position:absolute;
  inset:0;
  background: radial-gradient(600px 220px at 20% 0%, rgba(196,15,97,.16), transparent 55%),
              radial-gradient(540px 220px at 92% 10%, rgba(226,117,38,.14), transparent 60%);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events:none;
}

.ekcard{
  position: relative;
}

.ekcard:hover{
  transform: translateY(-4px);
  box-shadow: var(--ek-shadow);
  border-color: rgba(20,22,23,.18);
}

.ekcard:focus-visible{
  outline: 3px solid rgba(196,15,97,.28);
  outline-offset: 4px;
}

.ekcard:hover::before{ opacity: 1; }

.ekcard__cover{
  aspect-ratio: 10 / 10;
  background:
    linear-gradient(135deg, rgba(196,15,97,.12), rgba(106,47,245,.10)),
    radial-gradient(400px 180px at 60% 30%, rgba(20,22,23,.08), transparent 55%),
    #fff;
  position: relative;
  overflow: hidden;
}

.ekcard__cover img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display:block;
  position: relative;
  z-index: 0;
}

.ekcard__cover::after{
  content:"";
  position:absolute; inset:0;
  background: linear-gradient(180deg, transparent, rgba(20,22,23,.06));
  pointer-events:none;
  z-index: 1;
}

/* Hover overlay (Open PDF button) */
.ekcard__hover{
  position:absolute;
  inset:0;
  display:flex;
  align-items:flex-end;
  justify-content:flex-end;
  padding: 12px;
  background: linear-gradient(180deg, rgba(20,22,23,0) 58%, rgba(20,22,23,.55));
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .18s ease, transform .18s ease;
  pointer-events:none;
  z-index: 2;
}

.ekcard:hover .ekcard__hover,
.ekcard:focus-within .ekcard__hover{
  opacity: 1;
  transform: translateY(0);
  pointer-events:auto;
}

.ekcard__open{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 9px 12px;
  border-radius: 14px;
  font-size: 13px;
  font-weight: 700;
  text-decoration:none;
    color: rgb(255 255 255 / 92%);
    background: rgb(189 30 102) !important;
  border: 1px solid rgba(255,255,255,.35);
  box-shadow: 0 12px 26px rgba(0,0,0,.22);
  backdrop-filter: blur(10px);
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
}

.ekcard__open::after{
  content:"→";
  margin-left: 10px;
  opacity: .8;
}

.ekcard:hover .ekcard__open{ transform: translateY(-1px); box-shadow: 0 16px 34px rgba(0,0,0,.26); background: #fff; }

.ekcard__open:focus-visible{
  outline: 3px solid rgba(230,0,45,.28);
  outline-offset: 3px;
}

.ekcard__open--disabled{
  background: rgba(255,255,255,.14);
  color: rgba(255,255,255,.88);
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: none;
}

.ekcard__open--disabled::after{ display:none; }

@media (hover: none){
  .ekcard__hover{
    opacity: 1;
    transform: none;
    pointer-events:auto;
    background: linear-gradient(180deg, rgba(20,22,23,0) 58%, rgba(20,22,23,.58));
  }
}

.ekcard__body{
  padding: 14px 14px 16px;
}

.ekcard__title{
     margin: 0 0 8px!important;
    font-size: 20px !important;
    line-height: 1.25 !important;
    font-weight: bold !important;
    letter-spacing: 0.2px !important;
}
.ekcard__meta{     margin-top: 10px!important;
margin-bottom:20px;
    font-size: 16px !important;
    line-height: 1.25 !important;

    letter-spacing: 0.2px !important;}
.ekcard__desc{display:none;}
.ekcard__autor,
.ekcard__author{
  margin: 0 0 12px;
  color: var(--ek-muted);
  font-size: 13px;
  line-height: 1.35;
}

.ekcard__chips{
  display:flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 14px;
}

.ekchip{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(20,22,23,.05);
  border: 1px solid rgba(20,22,23,.08);
  font-size: 12px;
  color: rgba(20,22,23,.72);
}

.ekchip::before{
  content:"";
  width: 7px; height:7px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--ek-accent), var(--ek-accent2));
}

.ekcard__actions{
  display:flex;
  gap: 10px;
  align-items:center;
}

.ekbtn{
  appearance:none;
  border:0;
  cursor:pointer;
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  font-weight: 650;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  text-decoration:none;
  min-height: 40px;
  flex: 1 1 auto;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease;
  color: #fff;
  background: linear-gradient(135deg, var(--ek-accent), var(--ek-accent2));
  box-shadow: 0 10px 22px rgba(230,0,45,.18);
}

.ekbtn:hover{ transform: translateY(-1px); color:black; box-shadow: 0 14px 26px rgba(230,0,45,.22); }

.ekbtn--ghost{
  color: var(--ek-ink);
  background: rgba(255,255,255,.82);
  border: 1px solid rgba(20,22,23,.14);
  box-shadow: 0 10px 22px rgba(20,22,23,.08);
}

.ekbtn--ghost:hover{ transform: translateY(-1px); box-shadow: 0 14px 26px rgba(20,22,23,.10); }

.eknjiznica__footer{
  position: relative;
  max-width: var(--ek-max);
  margin: 0 auto;
  padding: 0 var(--ek-pad) calc(var(--ek-pad) + 6px);
  display:flex;
  justify-content:center;
}

.eknjiznica__more{
  border: 1px solid rgba(20,22,23,.14);
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(10px);
  border-radius: 999px;
  padding: 12px 16px;
  cursor:pointer;
  font-weight: 700;
  display:inline-flex;
  align-items:center;
  gap: 10px;
  box-shadow: 0 16px 40px rgba(20,22,23,.10);
  transition: transform .15s ease, box-shadow .2s ease;
}
.eknjiznica__more:hover{ transform: translateY(-1px); box-shadow: 0 20px 46px rgba(20,22,23,.12); }

.eknjiznica__more svg{ color: rgba(20,22,23,.8); }

/* Skeletons */
.ekcard--skeleton{ opacity: 1; transform: none; }
.ekcard--skeleton .ekcard__cover,
.ekcard--skeleton .ekcard__line,
.ekcard--skeleton .ekchip,
.ekcard--skeleton .ekbtn{
  position: relative;
  overflow: hidden;
  background: rgba(20,22,23,.06);
  border-color: rgba(20,22,23,.08);
  box-shadow: none;
}

.ekcard--skeleton .ekbtn{ height: 40px; padding:0; }
.ekcard--skeleton .ekbtn--ghost{ background: rgba(20,22,23,.05); }
.ekcard--skeleton .ekbtn{ background: rgba(20,22,23,.06); }

.ekcard__line{ height: 12px; border-radius: 8px; margin: 10px 0; }
.ekcard__line--t{ width: 86%; height: 14px; }
.ekcard__line--a{ width: 62%; }

.ekcard--skeleton .ekchip{ width: 90px; height: 26px; border-radius: 999px; }
.ekcard--skeleton .ekchip::before{ display:none; }

.ekcard--skeleton :is(.ekcard__cover, .ekcard__line, .ekchip, .ekbtn)::after{
  content:"";
  position:absolute; inset:0;
  transform: translateX(-120%);
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.55), transparent);
  animation: ekshimmer 1.2s infinite;
}

@keyframes ekshimmer{
  100%{ transform: translateX(120%); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  .ekcard, .ekbtn, .eknjiznica__more{ transition:none; }
  .ekcard--skeleton :is(.ekcard__cover, .ekcard__line, .ekchip, .ekbtn)::after{ animation:none; }
}


/* --- Modal (Detalji) --- */
body.ekmodal-open { overflow: hidden; }

.eknjiznica .ekmodal[hidden] { display: none !important; }

.eknjiznica .ekmodal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: grid;
  place-items: center;
  padding: 18px;
}

.eknjiznica .ekmodal__overlay{
  position:absolute;
  inset:0;
  background: rgba(20,22,23,.72);
  backdrop-filter: blur(10px);
}

.eknjiznica .ekmodal__dialog{
  position: relative;
  width: min(960px, calc(100vw - 36px));
  max-height: min(86vh, 920px);
  overflow: auto;
  border-radius: 22px;
  background: linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,255,255,.92));
  box-shadow: 0 30px 100px rgba(20,22,23,.35);
  border: 1px solid rgba(20,22,23,.10);
}

.eknjiznica .ekmodal__dialog::before{
  content:'';
  position:absolute;
  inset:0;
  border-radius: 22px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(196,15,97,.45), rgba(226,117,38,.45));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events:none;
}

.eknjiznica .ekmodal__close{
  position:absolute;
  top: 14px;
  right: 14px;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  border: 1px solid rgba(20,22,23,.12);
  background: rgba(255,255,255,.9);
  display:grid;
  place-items:center;
  cursor:pointer;
  transition: transform .15s ease, box-shadow .15s ease;
  box-shadow: 0 10px 24px rgba(20,22,23,.12);
  z-index: 2;
}
.eknjiznica .ekmodal__close:hover{ transform: translateY(-1px); }

.eknjiznica .ekmodal__content{ padding: 22px; }

.eknjiznica .ekmodal__grid{
  display:grid;
  grid-template-columns: 320px 1fr;
  gap: 22px;
  align-items: start;
}

.eknjiznica .ekmodal__cover{
  border-radius: 18px;
  overflow:hidden;
  background: rgba(20,22,23,.06);
  box-shadow: 0 16px 44px rgba(20,22,23,.12);
  aspect-ratio: 3/4;
}
.eknjiznica .ekmodal__cover img{ width:100%; height:100%; object-fit: cover; display:block; }
.eknjiznica .ekmodal__coverph{ width:100%; height:100%; }

.eknjiznica .ekmodal__title{
  margin: 0 0 6px;
  font-size: clamp(18px, 2.1vw, 26px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--ek-ink);
}
.eknjiznica .ekmodal__autor{
  color: rgba(20,22,23,.72);
  font-weight: 600;
  margin-bottom: 10px;
}

.eknjiznica .ekmodal__chips{ display:flex; flex-wrap:wrap; gap:8px; margin: 10px 0 14px; }

.eknjiznica .ekmodal__desc{
  color: rgba(20,22,23,.86);
  font-size: 15px;
  line-height: 1.6;
  background: rgba(255,255,255,.6);
  border: 1px solid rgba(20,22,23,.10);
  border-radius: 16px;
  padding: 14px 14px;
}

.eknjiznica .ekmuted{ color: rgba(20,22,23,.58); }

.eknjiznica .ekmodal__actions{
  margin-top: 14px;
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 860px){
  .eknjiznica .ekmodal__grid{ grid-template-columns: 1fr; }
  .eknjiznica .ekmodal__cover{ max-width: 420px; margin: 0 auto; }
}