style.css

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap');

:root {
  /* colors */
  --brand-8: #484DE8;
  --brand-9: #383EEF;
  --dark-0: #141414;
  --dark-1: #1A1A1A;
  --dark-2: #202020;
  --dark-3: #2D2D2D;
  --dark-4: #373737;
  --dark-5: #404040;
  --dark-6: #4C4C4C;
  --dark-7: #575757;
  --dark-8: #6E6E6E;
  --dark-9: #848484;
  --gray-0: #F8F9FA;
  --gray-1: #F1F3F5;
  --gray-2: #E9ECEF;
  --gray-3: #DEE2E6;
  --gray-4: #CED4DA;
  --gray-5: #CED4DA;
  --gray-6: #868E96;
  --gray-7: #495057;
  --gray-8: #343A40;
  --gray-9: #212529;
  --white: #FFFFFF;

  /* paddings */
  --container-padding-inline: 20px;
}

* {
  /* remove browser default margin & padding */
  margin: 0;
  padding: 0;
  /* it's better for modern layouts */
  box-sizing: border-box;
  /* default color text */
  color: var(--white);
  /* remove text decoration for links */
  text-decoration: none;
  list-style: none;
}

body {
  /* define the default font */
  font-family: "Inter", sans-serif;
  font-weight: 400;
  background-color: var(--dark-0);
}

html {
  /* 
  define rem size in px 
  when you will develop styles for other devices
  you can just change this value using @media rule
  and all font sizes will change on all website
  */
  font-size: 12px;
}

.container {
  width: 100%;
  padding-inline: var(--container-padding-inline);
  margin: 0 auto;
}

h1,
h2,
h3 {
  font-weight: 700;
}

h1 {
  font-size: 3.333rem;
}

h2 {
  font-size: 2.167rem;
}

a.link {
  text-decoration: underline;
  font-size: 1.167rem;
}

a.link:hover {
  text-decoration: underline;
}

a.link:visited {
  /* tip: you can define your variable like purple-9 */
  color: purple;
}

/* button */

.btn {
  /* to reduce problems when we use <a> tag */
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  width: fit-content;
  padding: 0.667rem 1rem;
  background: var(--brand-9);
  border: 1px solid var(--brand-9);
  border-radius: 8px;
  transition: 0.3s ease-out;
  /* button's text styles */
  color: var(--white);
  font-weight: 500;
  cursor: pointer;
}

/* to not have hover on touch screen devices */
@media (hover: hover) {
  .btn:hover {
    /* to make activation (click) effect faster */
    transition: 0.1s ease-out;
    background: var(--brand-8);
    border: 1px solid var(--brand-8);
  }
}

.btn:active {
  background: var(--brand-9);
  border: 1px solid var(--brand-9);
}

.btn:focus-visible {
  outline: 1px solid var(--brand-9);
  outline-offset: 2px;
}

/* outlined button styles */

.btn.outlined {
  background: none;
  border: 1px solid var(--brand-9);
}

@media (hover: hover) {
  .btn.outlined:hover {
    background: var(--brand-8);
    border: 1px solid var(--brand-8);
  }
}

.btn.outlined:active {
  background: var(--brand-9);
  border: 1px solid var(--brand-9);
}

/* transparent button styles */

.btn.transparent {
  background: none;
  border: 1px solid #ffffff00;
}

@media (hover: hover) {
  .btn.transparent:hover {
    background: var(--dark-5);
    border: 1px solid var(--dark-5);
  }
}

.btn.transparent:active {
  background: var(--dark-1);
  border: 1px solid var(--dark-1);
}

/* for icon button */
.btn.icon {
  padding: 0.35rem;
  border-radius: 6px;
}

/* additional btn styles */
.btn.full_width {
  width: 100%;
}

header {
  /* 
  equvalent to 
  padding-block: 20px;
  padding-inline: 0px;
  */
  padding: 20px 0;
  width: 100%;
  background: var(--dark-1);
  /* place elements container in center */
  display: flex;
  align-items: center;
  justify-content: center;
}

.header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  /* minimal gap */
  gap: 1rem;
}

.card {
  /* 
  you just can set aspect-ratio & 100% width
  height will be calculated according to aspect-ratio
  */
  width: 100%;
  aspect-ratio: 9/5;
  /* setting bg image */
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center center;
  background-image: url('./assets/images/card/tesla.png');
}

.card__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: start;
  gap: 20px;
  padding-top: 12px;
}

/* styles for h1 and .btn that will be only in .card__content class block */
.card__content>h1 {
  text-align: center;
}

.card__content>.btn {
  width: 150px;
}

.product_card {
  background: var(--dark-1);
  border: 1px solid var(--dark-2);
  overflow: hidden;
  border-radius: 8px;
}

.product_card__cover {
  width: 100%;
  object-fit: cover;
  aspect-ratio: 3/2;

}

.product_card__info {
  padding: 6px;
}

.product_card__name {
  font-size: 1rem;
  color: var(--gray-6);
}

.product_card__price {
  font-weight: 600;
  color: var(--gray-4);
  font-size: 1.333rem;
  margin-top: 6px;
}

.product_card .btn {
  margin-top: 14px;
}

.catalog__wrapper {
  margin-top: 20px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 0.667rem;
  row-gap: 0.667rem;
}

.catalog {
  padding-top: 30px;
}

.catalog>.container>.btn {
  margin-top: 16px;
}

.faq {
  padding-top: 50px;
}

.faq__wrapper {
  margin-top: 20px;
}

.faq_item {
  width: 100%;
}

.faq_item__button {
  padding-block: 8px;
  padding-inline: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq_item__icon {
  width: 2rem;
  aspect-ratio: 1/1;
}

.faq_item__answer {
  /* hide when closed */
  display: none;
}

.faq_item+.faq_item {
  margin-top: 16px;
}

footer {
  padding-top: 40px;
  padding-bottom: 50px;
  background: var(--dark-1);
  margin-top: 80px;
}

.footer__item+.footer__item {
  margin-top: 20px;
}

.footer__logo {
  height: 60px;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 2rem;
  row-gap: 2rem;
}

.footer__links__item__title {
  font-weight: 500;
  color: var(--gray-3);
  font-size: 1.333rem;
}

.footer__links__item__wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 10px;
}

.footer__links__item__wrapper>a {
  font-size: 1.167rem;
  color: var(--gray-6);
}

.footer__sign {
  font-size: 1.167rem;
  color: var(--gray-8);
}

.footer__credentials {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

.footer_icon {
  width: 20px;
  height: 20px;
}

footer>.container+.container {
  margin-top: 40px;
}