/* BASE STYLES - reset default style */
@charset "UTF-8";
input[type="email"],
input[type="number"],
input[type="search"],
input[type="text"],
input[type="tel"],
input[type="url"],
input[type="password"],
textarea {
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
  appearance: none;
  font-family: inherit;
  font-size: inherit;
}

input:is(:read-only, [readonly]),
textarea:is(:read-only, [readonly]) {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
  cursor: inherit;
}

input:is(:read-only, [readonly])::selection
  textarea:is(:read-only, [readonly])::selection {
  background: transparent;
  color: inherit;
}

input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-moz-inner-spin-button,
input[type="number"]::-moz-outer-spin-button,
input[type="number"]::-ms-inner-spin-button,
input[type="number"]::-ms-outer-spin-button,
input[type="number"]::-o-inner-spin-button,
input[type="number"]::-o-outer-spin-button {
  display: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  -ms-appearance: none;
  -o-appearance: none;
}

* {
  margin-block: 0;
  margin-inline: 0;
  padding-block: 0;
  padding-inline: 0;
  list-style-type: none;
  resize: none;
  border: none;
  outline: none;
  text-decoration: none;
  box-sizing: border-box;
  scroll-behavior: smooth;
  font-weight: inherit;

  -webkit-scrollbar-width: var(--scrollbar-width);
  -moz-scrollbar-width: var(--scrollbar-width);
  -ms-scrollbar-width: var(--scrollbar-width);
  -o-scrollbar-width: var(--scrollbar-width);
  scrollbar-width: var(--scrollbar-width);
  scrollbar-color: var(--bg-color-tertiary) var(--bg-color-primary);

  -webkit-tap-highlight-color: transparent;
  -moz-tap-highlight-color: transparent;
  -ms-tap-highlight-color: transparent;
  -o-tap-highlight-color: transparent;

  -webkit-overflow-scrolling: touch;
  -moz-overflow-scrolling: touch;
  -ms-overflow-scrolling: touch;
  -o-overflow-scrolling: touch;

  -webkit-overscroll-behavior: contain;
  -moz-overscroll-behavior: contain;
  -ms-overscroll-behavior: contain;
  -o-overscroll-behavior: contain;
  overscroll-behavior: contain;

  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
}

[type="search"] {
  -webkit-appearance: textfield;
  appearance: textfield;
  outline-offset: -2px;
}

[hidden],
template,
.template,
.hidden {
  display: none;
}

[type="search"]::-webkit-search-cancel-button,
[type="search"]::-webkit-search-decoration,
[type="search"]::-webkit-search-results-button,
[type="search"]::-webkit-search-results-decoration {
  -webkit-appearance: none;
  appearance: none;
}

[type="number"]::-webkit-inner-spin-button,
[type="number"]::-webkit-outer-spin-button {
  height: auto;
}

table {
  border-collapse: collapse;
}

img {
  object-fit: cover;
  vertical-align: middle;
  max-width: 100%;
}

svg {
  width: 20px;
  height: 20px;
  vertical-align: middle;
}

dialog:not([open]) {
  display: none;
}

button,
a {
  --button-bg: transparent;
  --button-text: inherit;
  --outline-width: 2px;
  --outline-offset: 2px;
  --outline-style: solid;
  --outline-color: transparent;
  background-color: var(--button-bg);
  color: var(--button-text);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  border-radius: 5px;
  cursor: pointer;
  gap: 6px;
}

button:focus-visible,
a:focus-visible {
  outline-width: var(--outline-width);
  outline-offset: var(--outline-offset);
  outline-style: var(--outline-style);
  outline-color: var(--outline-color);
}

button:active {
  transform: scale(var(--active-scale));
}

button:disabled,
.backdrop,
::backdrop {
  cursor: not-allowed;
}

:root {
  --color-scheme: dark;
  --scrollbar-width: thin;
  --main-bg: #0e0e0e;
  --main-color: #f1f1f1;
  --gray-color: gray;
  --gray-color-50: rgba(255, 255, 255, 80%);
  --foreground: #202020;
  --active-scale: 0.96;
  --direction: 1;
  --calc-button-bg: #0e0e0e;
  --calc-button-hover-bg: #222222;
  --calc-non-number-color: #ff9500;
  --calc-button-text-color: #fff;
  --calc-button-hover-text-color: #ffffff;

  /* About */
  --about-bg-color: #0a0a0a;
  --about-text-color: #f0f0f0;
  --about-nav-bg: #222222;
  --about-nav-text: #e0e0e0;
  --about-scetion-bg: #0e0e0e;
}

:root:dir(rtl) {
  --direction: -1;
}

:root.light-theme {
  --color-scheme: light;
  --main-bg: #ffffff;
  --main-color: #0c1033;
  --foreground: #eaeaea;
  --gray-color: #888aa0;
  --gray-color-50: rgb(12 16 51 / 85%);
  --calc-button-bg: #ffffff;
  --calc-button-hover-bg: #f3f3f3;
  --calc-non-number-color: #f62d00;
  --calc-button-text-color: var(--main-color);
  --calc-button-hover-text-color: var(--main-color);

  /* About */
  --about-bg-color: #f0f2f5;
  --about-text-color: #333;
  --about-nav-bg: #ffffff;
  --about-nav-text: #333;
  --about-scetion-bg: #ffffff;
}

@media (pointer: fine) {
  * {
    scrollbar-width: initial;
    scrollbar-color: initial;
  }

  *::-webkit-scrollbar {
    width: 5px;
    height: 5px;
    cursor: pointer;
  }

  *::-webkit-scrollbar-thumb {
    background-color: transparent;
    border-radius: 10px;
  }

  *::-webkit-scrollbar-track {
    background-color: transparent;
  }

  *:hover::-webkit-scrollbar-thumb {
    background-color: var(--foreground);
  }

  :is(.about-app)::-webkit-scrollbar {
    width: 7px;
    height: 7px;
  }

  :is(.about-app):hover::-webkit-scrollbar-thumb {
    background-color: var(--gray-color);
  }

  :is(html, body)::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }

  :is(html, body)::-webkit-scrollbar-thumb {
    background-color: var(--foreground);
    border-radius: 2px;
    box-shadow: inset 1px 1px rgb(255 255 255 / 0.18),
      inset -1px -1px rgb(255 255 255 / 0.18);
  }
}

html {
  color-scheme: var(--color-scheme);
  block-size: 100%;
  inline-size: 100%;
  overflow: hidden;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  block-size: 100%;
  max-block-size: 100%;
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
  background-color: var(--main-bg);
  color: var(--main-color);
  font-family: sans-serif, Arial, Helvetica;
}

@media (width <= 400px) {
  .alt-text {
    display: none;
  }
}

.calculator {
  background-color: inherit;
  inline-size: 100%;
  max-inline-size: 100%;
  block-size: 100%;
  max-block-size: 100%;
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  grid-auto-rows: max-content;
  grid-template-rows: auto 1fr;
  gap: 0px;
}

@media (width >= 780px) {
  .calculator {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (width >= 920px) {
  .calculator {
    box-shadow: 0 0px 20px 10px rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    inline-size: 90%;
    max-inline-size: 90%;
    block-size: 90%;
    max-block-size: 90%;
  }

  .light-theme .calculator {
    box-shadow: 0 0px 20px 5px rgba(0, 0, 0, 0.18);
  }
}

.app-header {
  display: flex;
  justify-content: start;
  align-items: center;
  gap: 15px;
  inline-size: 100%;
  max-inline-size: 100%;
  position: relative;
  padding: 1rem;
  background-color: var(--main-bg);
  box-shadow: 2px 0px 10px rgb(0 0 0 / 0.18);
  z-index: 10;
}

.app-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-grow: 1;
}

.app-header-bar > div {
  display: flex;
  align-items: center;
  gap: 16px;
}

.app-header-bar .about-app-btn {
  --button-bg: transparent;
  --button-text: var(--main-color);
  --outline-offset: -1px;
  --outline-width: 1px;
  --outline-color: var(--gray-color);
  font-weight: 600;
  font-size: clamp(0.95rem, 0.95rem + 3vw, 1.12rem);
  line-height: 1.1;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--foreground);
  padding: 7px 11px;
  border-radius: 20px;
}

.app-header-bar .about-app-btn strong {
  display: inline-block;
  margin-block-start: 2px;
}

.history-btn,
.fullscreen-btn {
  --button-bg: transparent;
  --button-text: var(--main-color);
  --outline-offset: -1px;
  --outline-width: 1px;
  --outline-color: var(--gray-color);
  border: 1px solid var(--foreground);
  padding: 7px 11px;
  font-size: clamp(0.77rem, 0.77rem + 3vw, 0.87rem);
  font-weight: 500;
  letter-spacing: 0.02rem;
  transition: border-color 300ms ease;
}

.fullscreen-btn svg {
  inline-size: 16px;
  block-size: 16px;
}

.fullscreen-btn {
  padding: auto;
  border-radius: 50%;
  inline-size: 35px;
  block-size: 35px;
}

.history-btn:hover,
.about-app-btn:hover,
.fullscreen-btn:hover,
.theme-btn:hover {
  border-color: var(--gray-color);
}

.fullscreen-btn {
  padding: 6px 9px;
}

.fullscreen-btn .exit {
  display: none;
}

.fullscreen .fullscreen-btn .exit {
  display: block;
}

.fullscreen .fullscreen-btn .enter {
  display: none;
}

.theme-btn {
  --button-bg: transparent;
  --button-text: var(--main-color);
  --outline-offset: -1px;
  --outline-width: 1px;
  --outline-color: var(--gray-color);
  inline-size: 35px;
  block-size: 35px;
  border-radius: 50px;
  border: 1px solid var(--foreground);
  transition: border-color;
}

.light-theme .theme-btn .sun,
.theme-btn .moon {
  display: none;
}

.light-theme .theme-btn .moon {
  display: block;
}

@media (width >= 920px) {
  .fullscreen .calculator {
    inline-size: 97%;
    max-inline-size: 97%;
    block-size: 95%;
    max-block-size: 95%;
  }
}

@media all and (display-mode: fullscreen) {
  .fullscreen-btn .enter {
    display: none;
  }

  .fullscreen-btn .exit {
    display: block;
  }

  @media (width >= 920px) {
    .calculator {
      inline-size: 97%;
      max-inline-size: 97%;
      block-size: 95%;
      max-block-size: 95%;
    }
  }
}

@media (width < 400px) {
  .history-btn,
  .menu-btn {
    inline-size: 35px;
    block-size: 35px;
    border-radius: 50%;
    padding: 6px 9px;
  }

  .app-header-bar .about-app-btn {
    padding: 6px 9px;
  }
}

@media (width >= 780px) {
  .app-header {
    grid-column: 1 / -1;
  }

  .calc-operation-section {
    grid-column: 1 / -2;
  }

  #historyBtn {
    display: none;
  }
}

.sidebar {
  position: absolute;
  background-color: rgb(0 0 0 / 0.58);
  block-size: 100%;
  inline-size: 100%;
  max-block-size: 100%;
  max-inline-size: 100%;
  cursor: not-allowed;
  border-radius: inherit;
  overflow: hidden;
  isolation: isolate;
  z-index: 100;
  display: none;
}

.sidebar .sidebar-wrap {
  cursor: default;
  background-color: var(--main-bg);
  inline-size: min(275px, 90%);
  max-inline-size: min(275px, 90%);
  block-size: 100%;
  max-block-size: 100%;
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 0;
}

.calc-operation-section {
  overflow: hidden auto;
  inline-size: 100%;
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 0px;
}

.calc-screen {
  background-color: var(--main-bg);
  position: sticky;
  inset-inline: 0px;
  inset-block-start: -1rem;
  z-index: 4;
  flex-shrink: 0;
  padding: 1rem;
  padding-inline: 0px;
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
  display: block;
  margin-block-end: 14px;
}

.calc-screen .radian-flag {
  text-transform: uppercase;
  font-weight: 700;
  font-size: 13px;
  color: var(--gray-color);
  margin-block-end: 8px;
  pointer-events: none;
}

.calc-screen :is(.calc-expression, .calc-result) {
  display: block;
  inline-size: 100%;
  max-inline-size: 100%;
  text-align: end;
  white-space: nowrap;
  overflow: auto hidden;
  padding: 0;
  cursor: text;
  -webkit-user-select: text;
  user-select: text;
}

.calc-screen :is(.calc-expression, .calc-result)::selection {
  background-color: var(--calc-non-number-color);
  color: var(--main-color);
}

.light-theme .calc-screen :is(.calc-expression, .calc-result)::selection {
  color: var(--main-bg);
}

.calc-screen .calc-result {
  font-weight: 500;
  color: var(--gray-color);
  min-block-size: calc(1em + 5px);
  font-size: 16px;
}

.calc-screen .calc-expression {
  font-size: clamp(0.87rem, 0.87rem + 8vw, 1.5em);
  letter-spacing: 0.025rem;
  line-height: 1.35;
  margin-block-end: 8px;
}

.calc-expression .cursor {
  display: inline-block;
  vertical-align: middle;
  inline-size: 2px;
  background-color: var(--calc-non-number-color);
  block-size: 1.2em;
  margin-inline: -0.85px;
  margin-block-end: 3px;
  opacity: 1;
  animation: blink 800ms step-end infinite;
}

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

.calc-expression::selection .cursor {
  display: none;
}

.calc-buttons-group {
  flex: 1 0 auto;
  padding: 1px;
  background-color: var(--foreground);
  border-radius: 1px;
}

.calc-buttons {
  padding: 0px;
  min-block-size: 100%;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  border-radius: inherit;
  overflow-x: auto;
}

.calc-buttons > button {
  --outline-width: 2px;
  --outline-color: var(--calc-non-number-color);
  --outline-offset: -2px;
  --button-bg: var(--calc-button-bg);
  --button-text: var(--calc-button-text-color);
  border-radius: 1px;
  text-align: center;
  padding: 16px;
  text-transform: lowercase;
  font-size: clamp(0.75rem, 0.75rem + 3vw, 0.85rem);
  font-weight: 500;
  transition: none;
}

.calc-buttons > button:not(.number) {
  --button-text: var(--calc-non-number-color);
}

.calc-buttons > button:is(:active, :focus-visible) {
  transform: scale(var(--active-scale));
}

.calc-buttons > button:not(.equals):hover {
  --button-bg: var(--calc-button-hover-bg);
  --button-text: var(--calc-button-hover-text-color);
}

.calc-buttons > button.clicked {
  transform: scale(var(--active-scale));
  outline: 2px solid var(--calc-non-number-color);
}

.calc-buttons > .mode-toggle {
  grid-column: span 3;
  text-transform: uppercase;
}

.calc-buttons > :is(.decimal) {
  grid-column: span 2;
}

.calc-buttons :is(.delete, .equals, .zero) {
  grid-row: span 2;
}

.calc-buttons > button.equals {
  --button-bg: var(--calc-non-number-color);
  --button-text: var(--calc-button-hover-text-color);
  font-size: clamp(0.8rem, 0.8rem + 6vw, 1.05rem);
  font-weight: 600;
}

.calc-buttons > button.equals:hover {
  opacity: 0.75;
}

.light-theme .calc-buttons > button.equals {
  --button-text: var(--main-bg);
}

.light-theme .calc-buttons > button.equals:hover {
  opacity: 0.89;
}

.history-section {
  position: absolute;
  inset: 0px;
  block-size: 100%;
  max-block-size: 100%;
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.18);
  isolation: isolate;
  z-index: 10;
  display: none;
  align-items: end;
  padding: 0;
}

@media (width < 780px) {
  .history-section.active {
    display: flex;
  }
}

.history-wrap {
  max-block-size: 60%;
  inline-size: 100%;
  padding: 0;
  overflow: hidden auto;
  background-color: var(--main-bg);
  border-start-end-radius: 14px;
  border-start-start-radius: 14px;
  box-shadow: 0 -12px 20px rgb(0 0 0 / 0.18);
}

.histoty-top-bar {
  background-color: var(--main-bg);
  box-shadow: 0 1px 4px rgb(0 0 0 / 0.2);
  border-radius: inherit;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-block: 18px 1rem;
  padding-inline: 1rem;
  position: -webkit-sticky;
  position: sticky;
  inset-inline: 0px;
  inset-block-start: 0px;
  z-index: 4;
}

.histoty-top-bar::after {
  content: "";
  background-color: var(--foreground);
  inline-size: 60px;
  block-size: 4px;
  border-radius: 5px;
  position: absolute;
  inset-block-start: 8px;
  inset-inline-start: 50%;
  transform: translateX(-50%);
  pointer-events: none;
}

.histoty-top-bar h1 {
  font-weight: 700;
  font-size: clamp(0.9rem, 0.9rem + 4vw, 1.075rem);
  color: var(--gray-color);
  pointer-events: none;
}

.histoty-top-bar button {
  --button-text: var(--gray-color-80);
  --outline-color: var(--gray-color);
  --outline-offset: -1px;
  --button-bg: transparent;
  padding: 10px 15px;
  font-size: 0.9rem;
  font-weight: 500;
  border-radius: 50px;
  border: 1px solid var(--foreground);
  cursor: pointer;
  transition: border-color 300ms ease;
}

.history-top-bar button:hover {
  border-color: var(--gray-color);
}

.history-list {
  padding-inline: 8px;
  padding-block: 12px;
  display: flex;
  flex-direction: column;
}

.history-list::after {
  content: "No history yet.";
  display: block;
  text-align: center;
  font-size: clamp(1rem, 1rem + 5vw, 1.17rem);
  font-weight: bold;
  color: var(--gray-color);
  padding-block: 2rem;
  padding-inline: 1rem;
  pointer-events: none;
}

.history-list:has(:first-child)::after {
  display: none;
}

.history {
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
  display: grid;
  gap: 0px;
  background-color: transparent;
  border-block-end: 1px solid var(--foreground);
  cursor: pointer;
  transition: background-color 300ms ease;
}

.history:hover {
  background-color: var(--calc-button-hover-bg);
}

.history-list > .history:last-child {
  border-block-end: 0;
}

.history .exp-block {
  padding: 10px;
  padding-inline: 16px;
  max-block-size: 100%;
  overflow: hidden;
}

.exp-block span {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow: auto hidden;
  white-space: nowrap;
  padding: 0;
  font-size: clamp(0.78rem, 0.78rem + 3vw, 0.95rem);
  text-align: end;
}

.exp-block .history-result {
  color: var(--gray-color);
  font-size: clamp(0.78rem, 0.78rem + 3vw, 0.85rem);
  margin-block-start: 4px;
}

@media (width >= 780px) {
  .history-section {
    display: flex;
    grid-column: 3 / -1;
    position: relative;
    inset: unset;
    isolation: unset;
    background-color: transparent;
    align-items: start;
    z-index: auto;
  }

  .history-wrap {
    max-block-size: 100%;
    background-color: transparent;
    border-start-end-radius: 0px;
    border-start-start-radius: 0px;
    box-shadow: none;
  }

  .histoty-top-bar {
    padding-block: 1rem;
    box-shadow: none;
  }

  .histoty-top-bar::after {
    display: none;
  }
}

.about-app {
  line-height: 1.5;
  block-size: 100%;
  max-block-size: 100%;
  inline-size: 100%;
  max-inline-size: 100%;
  background-color: var(--about-bg-color);
  color: var(--about-text-color);
}

.about-app header {
  background: linear-gradient(135deg, #4a90e2, #50e3c2);
  color: #ffffff;
  text-align: center;
  padding: 2rem 1rem;
  border-bottom: 4px solid #357abd;
}

.about-app header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 1.8rem + 5vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  text-shadow: 3px 3px 1px rgb(0 0 0 / 0.2);
}

.about-app header p {
  margin-block-start: 0.5rem;
  font-size: clamp(0.9rem, 0.9rem + 5vw, 1.2rem);
  text-shadow: 2px 2px 1px rgb(0 0 0 / 0.18);
}

.about-app nav {
  background-color: var(--about-nav-bg);
  color: var(--about-nav-text);
  position: -webkit-sticky;
  position: sticky;
  inset-inline: 0px;
  inset-block-start: 0px;
  inline-size: 100%;
  z-index: 100;
  padding-block: 1rem;
  padding-inline: 0px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.about-app nav > div {
  display: flex;
  gap: 16px;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 0.89rem;
  padding-inline: 20px;
  inline-size: min(100%, 900px);
  position: relative;
}

.about-app nav > div button {
  --outline-offset: -1px;
  --outline-width: 1px;
  --outline-color: var(--gray-color);
  block-size: 35px;
  inline-size: 35px;
  border-radius: 50px;
  border: 1px solid var(--foreground);
  transition: border-color 300ms ease;
}

.about-app nav > div button:hover {
  border-color: var(--gray-color);
}

.about-app nav .menu-list {
  position: absolute;
  inset-block-start: calc(100% + 24px);
  inset-inline-end: 20px;
  inline-size: min(calc(100% - 40px), 240px);
  background-color: var(--about-nav-bg);
  box-shadow: 0 7px 13px rgb(0 0 0 / 0.18);
  z-index: inherit;
  border-radius: 8px;
  padding: 10px;
  display: none;
  flex-direction: column;
  gap: 3px;
}

.about-app.menu-visible nav .menu-list {
  display: flex;
}

.about-app nav li {
  padding: 0;
  inline-size: 100%;
  font-size: 0.89rem;
}

.about-app nav a {
  --outline-color: var(--gray-color-50);
  --outline-offset: -2px;
  display: block;
  padding: 8px 14px;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s, background-color 0.3s;
  border-radius: 3px;
}

.about-app nav a:hover {
  --button-text: #4a90e2;
  --button-bg: var(--about-bg-color);
}

.about-app main {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px;
}

.about-app main section {
  background-color: var(--about-scetion-bg);
  padding: 20px;
  margin-block-end: 24px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
}

.about-app main section .function-group {
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: hidden;
}

.about-app section h2 {
  color: #4a90e2;
  border-block-end: 2px solid #50e3c2;
  padding-block-end: 5px;
  margin-block: 0.83em;
  font-weight: 700;
  font-size: clamp(0.95em, 0.95em + 5vw, 1.5em);
}

.about-app main h3 {
  color: #357abd;
  margin-block: 1.5rem 1em;
  font-size: clamp(0.89em, 0.89em + 5vw, 1.17em);
  font-weight: 700;
}

.about-app main p {
  margin-block: 1em;
  font-size: clamp(0.889em, 0.889em + 4vw, 1em);
  letter-spacing: 0.02rem;
}

.about-app main li {
  font-size: clamp(0.889em, 0.889em + 4vw, 0.965em);
  letter-spacing: 0.02rem;
  margin-block-end: 0.5em;
  line-height: 1.25;
}

.about-app main .table-wrapper {
  inline-size: 100%;
  max-inline-size: 100%;
  overflow: auto;
  padding-block-end: 10px;
  display: grid;
  grid-template-columns: 1fr;
}

.about-app main table {
  min-inline-size: 100%;
  text-align: start;
}

.about-app main table thead {
  font-weight: 700;
  border-block-end: 4px solid var(--foreground);
}

.about-app main table thead > tr th {
  text-align: start;
  padding-block: 0.4rem;
  padding-inline: 0.5rem;
  line-height: 1.1;
  position: sticky;
  inset-block-start: 0;
  inset-inline-start: 0;
  text-transform: capitalize;
  background-color: var(--about-scetion-bg);
}

.about-app main table tbody td {
  padding-block: 0.4rem;
  padding-inline: 0.5rem;
  font-size: clamp(0.82rem, 0.82rem + 3vw, 0.95rem);
  white-space: nowwrap;
}

.about-app main table :is(td, th) {
  white-space: nowrap;
}

.about-app main table tbody > tr:nth-child(even) {
  background-color: var(--foreground);
}

.about-app strong {
  font-weight: 700;
  letter-spacing: -0.018rem;
}

.about-app #faq > .faq-item {
  border-block-end: 1px solid var(--gray-color);
  border-radius: 0;
}

.about-app #faq > .faq-item:last-child {
  border-block-end: 0px;
}

.about-app .faq-item .faq-question {
  --text-color: var(--about-text-color);
  --button-text: var(--text-color);
  display: flex;
  inline-size: 100%;
  padding: 0px;
  padding-block: 16px;
  text-align: start;
  justify-content: space-between;
  align-items: center;
  gap: 35px;
  border-radius: 0px;
  font-size: clamp(0.889em, 0.889em + 4vw, 1em);
  border-block-end: 1px dashed transparent;
  font-weight: 500;
  line-height: 1.25;
  transition: color 300ms ease;
}

.about-app .faq-item .faq-question:is(:hover) {
  --text-color: #03b5d2;
}

.about-app .faq-item .faq-question:is([aria-expanded="true"]) {
  --text-color: #03b5d2;
  border-block-end-color: var(--foreground);
}

.about-app .faq-item .faq-question .icon {
  pointer-events: none;
  inline-size: 24px;
  block-size: 24px;
  border-radius: 50%;
  border: 1px solid var(--text-color);
  transition: border-color 300ms ease;
  display: block;
  position: relative;
  flex-shrink: 0;
}

.about-app .faq-item .faq-question .icon::before,
.about-app .faq-item .faq-question .icon::after {
  content: "";
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
  border-radius: 2px;
  inline-size: 55%;
  block-size: 2px;
  background-color: var(--text-color);
  transition: background-color 300ms ease;
  transform: translate(-50%, -50%);
}

.about-app .faq-item .faq-question .icon::after {
  transform: translate(-50%, -50%) rotate(-90deg);
}

.about-app .faq-item .faq-question:is([aria-expanded="true"]) .icon::after {
  transform: translate(-50%, -50%);
}

.about-app .faq-item .faq-question:active {
  transform: none;
}

.about-app .faq-item .faq-answer {
  max-block-size: 0px;
  overflow-y: hidden;
  padding: 0;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  font-size: clamp(0.85rem, 0.85rem + 5vw, 0.95rem);
  color: var(--gray-color-80);
  transition: max-block-size 300ms ease, opacity 300ms ease;
}

.about-app .faq-item .faq-question:is([aria-expanded="true"]) ~ .faq-answer {
  max-block-size: 370px;
  overflow-y: auto;
  opacity: 1;
  visibility: visible;
}

.about-app footer {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 14px;
  padding-inline: 3rem;
  padding-block: 0 2rem;
  color: var(--gray-color-50);
}

.about-app .bottom-btn {
  --button-bg: var(--about-scetion-bg);
  --outline-color: var(--gray-color);
  --outline-offset: -2px;
  box-shadow: 0px 3px 14px rgb(0 0 0 / 0.2);
  border-radius: 50%;
  block-size: 35px;
  inline-size: 35px;
  position: fixed;
  inset-inline-end: 20px;
  inset-block-end: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.about-app .bottom-btn:hover {
  transform: scale(1.085);
}

.about-app .close-about-app {
  transition: inset-block-end 300ms ease, transform 300ms ease;
}

.about-app.scrolled .close-about-app {
  inset-block-end: 65px;
}

.about-app .close-about-app::before,
.about-app .close-about-app::after {
  pointer-events: none;
  content: "";
  display: block;
  inline-size: 50%;
  block-size: 2px;
  border-radius: 2px;
  background-color: var(--about-text-color);
  position: absolute;
  inset-block-start: 50%;
  inset-inline-start: 50%;
}

.about-app .close-about-app::before {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.about-app .close-about-app::after {
  transform: translate(-50%, -50%) rotate(45deg);
}

.about-app .back-to-top {
  --button-text: var(--about-text-color);
  display: none;
  transition: transform 300ms ease;
}

.about-app .back-to-top svg {
  transform: rotate(-0deg);
  margin-block-end: 2px;
}

.about-app.scrolled .back-to-top {
  display: flex;
}