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

/*theme colors*/

:root {
  /* Light theme colors */
  --color-sidebar-bg: #ffeb7a;
  --color-sidebar-tab: #fff2a7;
  --color-sidebar-border: #cf8d1c;
  --color-sidebar-link: #ffe137;
  --color-sidebar-link-hr: #f9c700;
  --color-sidebar-link-selected: #daa520;
  --color-primary-text: #a80000;
  --color-secondary-text: #a80000;
  --color-text-tertiary: #800000;
  --color-book-select: #a80000;
  --color-slider-thumb-bg: #f5f5f5;
  --color-slider-thumb-txt: #636363;
  --color-slider-thumb-br: #c3c8c8;
  --color-slider-primary: #b3b7b8;
  --color-slider-secondary: #dbe0e1;
  --color-content-bg: #ffffff;
}

body.dark-theme {
  /* Dark theme colors */
  --color-sidebar-bg: #1f2873;
  --color-sidebar-tab: #0d134c;
  --color-sidebar-border: #4169e1;
  --color-sidebar-link: #000067;
  --color-sidebar-link-hr: #000086;
  --color-sidebar-link-selected: #0b0ba8;
  --color-primary-text: #4169e1;
  --color-secondary-text: #7d9dfc;
  --color-text-tertiary: #4169e1;
  --color-book-select: #4970e6;
  --color-slider-thumb-bg: #254b6f;
  --color-slider-thumb-txt: #020c15;
  --color-slider-thumb-br: #0a1d2e;
  --color-slider-primary: #0c243a;
  --color-slider-secondary: #18344f;
  --color-content-bg: #020c15;
}

body {
  display: flex;
  justify-content: center;
  overflow: hidden;
  background-color: var(--color-content-bg);
}

/*book select*/
#card-container {
  width: 300px;
}

#book-select {
  position: fixed;
  top: 20px;
  width: 300px;
  height: 33.34px;
}

#card-gallery {
  display: grid;
  grid-template-rows: auto;
  grid-template-columns: 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr 1fr;
}

.my-card {
  aspect-ratio: 1;
  width: 100%;
  transform: scaleY(0.3) scaleX(0.3);
}

.my-card::before {
    content: '';
    display: block;
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--color-book-select);
    transition-property: transform, opacity;
    transition-duration: 650ms, 650ms;
    transition-timing-function: ease, ease;
}

/*interactive scaling*/

  /*--------------hit box--------------*/
    
.my-card.active {
  transform: scaleY(.95) scaleX(.95);
}

#card-gallery:has(.my-card) .my-card:not(.active) {
  opacity: 0.4;
  transform: scaleY(.95) scaleX(.95);
}

.my-card.active+.my-card,
.my-card:has(+ .my-card.active) {
  opacity: 0.8 !important;
  transform: scaleY(.95) scaleX(.95) !important;
}

.my-card.active+.my-card+.my-card,
.my-card:has(+ .my-card + .my-card.active) {
  opacity: 0.65 !important;
  transform: scaleY(.95) scaleX(.95) !important;
}

.my-card.active+.my-card+.my-card+.my-card,
.my-card:has(+ .my-card + .my-card + .my-card.active) {
  opacity: 0.45 !important;
  transform: scaleY(.95) scaleX(.95) !important;
}

  /*--------------card visual--------------*/

.my-card.active::before {
  transform: scaleY(.95) scaleX(.95);
}

#card-gallery:has(.my-card) .my-card:not(.active)::before {
  opacity: 0.5;
  transform: scaleY(0.4) scaleX(0.4);
}


.my-card.active+.my-card::before,
.my-card:has(+ .my-card.active)::before {
  opacity: 0.8 !important;
  transform: scaleY(0.8) scaleX(0.8) !important;
}


.my-card.active+.my-card+.my-card::before,
.my-card:has(+ .my-card + .my-card.active)::before {
  opacity: 0.65 !important;
  transform: scaleY(0.65) scaleX(0.65) !important;
}


.my-card.active+.my-card+.my-card+.my-card::before,
.my-card:has(+ .my-card + .my-card + .my-card.active)::before {
  opacity: 0.45 !important;
  transform: scaleY(0.45) scaleX(0.45) !important;
}


/*page pagination slider*/

.range {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: fixed;
  bottom: -10px;
  width: fit-content;
  height: fit-content;
  border-radius: 2mm;
}

.fa-caret-left::before, 
.fa-caret-right::before {
  cursor: pointer;
  font-size: 50px;
  color: var(--color-slider-primary);
}

.fa-caret-left {
  position: absolute;
  top: 28px;
  right: calc(100% + 43px);
}

.fa-caret-right {
  position: relative;
  top: 28px;
  left: calc(50% + 43px + 9px);
}

.tick-box {
  position: relative;
  display: flex;
  align-items: flex-end;
  height: 60px;
}

.slider-track {
  width: 100%;
  height: 6px;
  margin-bottom: 5px;
  border-radius: 5px;
  background: var(--color-slider-primary);
}

.thumb {
  position: absolute;
  top: -25px;
  left: -42.5px;
  width: 85px;
  height: 35px;
  transform-origin: center;
  border: 7px solid var(--color-slider-thumb-br);
  border-radius: 30px;
  background: var(--color-slider-thumb-bg);
}

p.count {
  cursor: pointer;
  height: 30px;
  margin: -2px 0;
  font-size: 22px;
  font-family: Arial, Helvetica, sans-serif;
  font-weight: 600;
  text-align: center;
  color: var(--color-slider-thumb-txt);
}

.ticks {
  position: relative;
  right: 20px;
  width: 100%;
  height: 50px;
}

.tick {
  cursor: pointer;
  display: block;
  position: absolute;
  top: -10px;
  width: 40px;
  height: 40px;
}

.tick.sml {
  display: none;
}

.tick.med::before, 
.tick.big::before {
  content: '';
  display: block;
  position: relative;
  top: 10px;
  border-radius: 50%;
}

.tick.med::before {
  left: 15px;
  width: 9px;
  height: 9px;
  background: var(--color-slider-secondary);
}

.tick.big::before {
  left: 11px;
  width: 17.5px;
  height: 17.5px;
  background: var(--color-slider-primary);
}

.tick span {
  display: none;
}