style.css

/* Start Base Styles */
html {
  font-size: 100%;
}

:root {
  /* Colors */
  --clr-primary: hsl(235, 81%, 60%);
  --clr-white: hsl(0, 0%, 100%);
  --clr-black: hsl(0, 0%, 0%);
  --clr-red: hsl(355, 100%, 60%); 
  --clr-gray: hsl(0deg 0% 35%); 
  --clr-saffron: hsl(43, 93%, 64%);
  --clr-turquoise: hsl(161, 86%, 56%);
  --clr-lightBlue: hsl(234, 73%, 90%);
  --clr-lightRead: hsl(350, 75%, 89%); 
  --clr-lightSaffron: hsl(52, 56%, 92%);
  --clr-lightTurquoise: hsl(167, 67%, 88%);
  --clr-lightGray: hsl(0deg 0% 44%);
  --clr-body: hsl(230, 43%, 97%);
  --clr-hero: hsl(222, 68%, 95%);
  --clr-overlay: hsla(0, 0%, 0%, 0.5);
  --clr-scrollbarThumb: hsl(234, 100%, 80%);
  --clr-social-icon: hsl(210, 25%, 98%);
  --clr-dribbble: hsl(330, 80%, 67%);
  --clr-facebook: hsl(220, 46%, 48%);
  --clr-twitter: hsl(203, 89%, 53%);
  --clr-youtube: hsl(0, 100%, 50%);

  /* Font */
  --ff: 'Rubik', sans-serif;
  /* Font size */
  --fs-biggest: 4.375rem;
  --fs-bigger : 3rem;
  --fs-big    : 1.5rem;
  --fs-bold   : 1.25rem;
  --fs-medium : 1.25rem;
  --fs-normal : 1rem;
  /* Font weight */
  --fw-black   : 900;
  --fw-bold    : 700;
  --fw-semiBold: 600; 
  --fw-medium  : 500;
  --fw-regular : 400;
  
  /* Header height (mobile & desktop) */
  --header-height-m: 4rem;
  --header-height-d: 5rem;

  /* Scrollbar */
  --scrollbar-width: 0.4375rem;

  /* Z-index */
  --z-fixed: 100;
}

*, *::before, *::after {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
  scrollbar-width: var(--scrollbar-width);
  scrollbar-color: var(--clr-scrollbarThumb) var(--clr-white);
}

body {
  font-family: var(--ff);
  font-size: var(--fs-normal);
  background-color: var(--clr-body);
  color: var(--clr-black);
}

main > section {
  padding-bottom: clamp(2rem, 10vw, 5rem);
}

h1, h2, h3 {
  font-weight: var(--fw-bold);
}

p {
  font-size: var(--fs-medium);
  font-weight: var(--fw-regular);
  line-height: 1.5625rem;
}

ul {
  list-style: none;
}

a, a:hover, a:focus, a:active {
  text-decoration: none;
}

button {
  border: none;
}

/* Scrollbar styles */
::-webkit-scrollbar {
  width: var(--scrollbar-width);
}

::-webkit-scrollbar-track {
  background-color: var(--clr-white);
  border-radius: 0.625rem;
}

::-webkit-scrollbar-thumb {
  border-radius: 0.625rem;
  background-color: var(--clr-scrollbarThumb);
}

/* Selection */
::selection {
  color: var(--clr-white);
  background-color: var(--clr-primary);
}

/* Focus */
:focus,
:focus-visible {
  outline: 0.125rem solid var(--clr-black);
  outline-offset: 0.125rem;
}

:focus:not(:focus-visible) {
  outline: none;
}

:active {
  outline: none;
}

/* container */
.container {
  max-width: 71.25rem;
  margin: auto;
}

.container--px {
  padding-left: 1rem;
  padding-right: 1rem;
}

/* Screen reader only (: */
.visually-hidden {
  position: absolute;
  left: -100vw;
  width: 0.0625rem;
  height: 0.0625rem;
  white-space: nowrap;
  overflow: hidden;
}

.flex {
  display: flex;
}

/* hide Scrollbar */
@media screen and (max-width: 40em){
  .scroll-hide {
    overflow: hidden;
  }
}


/* Primary subtitle*/
.subtitle-primary {
  font-size: clamp(var(--fs-medium), 2vw + 0.5rem, var(--fs-bold));
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.2rem;
  color: var(--clr-primary);
  margin-bottom: clamp(0.5rem, 2vw + 0.5rem, 1.5rem);
}

/* Primary title */
.title-primary {
  font-size: clamp(var(--fs-big), 4vw + 0.5rem, var(--fs-bigger));
  font-weight: var(--fw-bold);
  margin-bottom: clamp(1rem, 3vw + 0.5rem, 3rem);
}


/* End Base Styles */

/* Header */
.header {
  position: fixed;
  z-index: var(--z-fixed);
  width: 100%;
  height: var(--header-height-m);
  transition: all 300ms ease-in-out;
  background-color: var(--clr-white);
}

@media screen and (min-width: 40em) {
  .header {
    height: var(--header-height-d);
    background-color: transparent;
  }
}

/* Header active */
.header--active {
  transition-duration: 0ms;
  background-color: var(--clr-white);
}

/* Header container */
.header__container {
  height: 100%;
  background-color: inherit;
}

/* Navbar */
.navbar {
  position: relative;
  height: 100%;
  justify-content: space-between;
  align-items: center;
  background-color: inherit;
}

/* Brand */
.navbar__brand {
  width: 65px;
}

/* Toggle menu button */
.navbar__toggle-menu {
  background-color: transparent;
  cursor: pointer;
}

@media screen and (min-width: 40em) {
  .navbar__toggle-menu {
    display: none;
  }
}

/* Hamburger */
.toggle-menu__hamburger {
  position: relative;
  width: 2.2rem;
  padding: 0.1rem;
}

.hamburger__item {
  width: 100%;
  height: 0.25rem;
  background-color: var(--clr-black);
  border-radius: 1rem;
  transition: width 500ms ease-in-out;
}

.hamburger__item:not(:last-child) {
  margin-bottom: 0.31rem;
}

/* Hamburger animation */
.toggle-menu--active .hamburger__item:first-child {
  width: 70%;
}

.toggle-menu--active .hamburger__item:nth-child(2) {
  width: 90%;
}

.toggle-menu--active .hamburger__item:last-child {
  width: 55%;
}

/* Menu */
@media screen and (max-width: 39.9375em) { /* 639px */
  .navbar__menu {
    position: fixed;
    top: -100%;
    left: 0;
    z-index: -1;
    width: 100%;
    background-color: var(--clr-white);
    text-align: center;
    padding: 2rem 0;
    visibility: hidden;
    transition: all 500ms ease-in-out;
  }

  /* Menu open */
  .navbar__menu--open {
    visibility: visible;
    top: var(--header-height-m);
  }
}

.menu__item:not(:last-child) {
  margin-bottom: 1.5rem;
}

@media screen and (min-width: 40em) {
  .menu__item {
    display: inline-block;
  }

  .menu__item:not(:last-child) {
    margin: 0 0.6rem;
  }
}

.menu__link {
  position: relative;
  font-weight: var(--fw-medium);
  color: var(--clr-black);
  padding: 0 0.3rem;
  transition: opacity 300ms ease-in-out;
}

.menu__link::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.4rem;
  width: 0;
  height: 0.25rem;
  border-radius: 1rem;
  background-color: var(--clr-red);
  transition: width 300ms ease-in-out;
}

/* Hover effect */
.menu__link:hover {
  opacity: 0.8;
}
.menu__link:hover::before {
  width: 100%;
}

/* Active link */
.menu__link--active {
  font-weight: var(--fw-bold)
}

.menu__link--active::before {
  width: 100%;
}

/* Overlay */
.header__overlay {
  position: fixed;
  inset: 0;
  z-index: -10000;
  background-color: var(--clr-overlay);
  visibility: hidden;
  opacity: 0;
  transition: all 500ms ease-in-out;
}

@media screen and (max-width: 40em) {
  .header__overlay--open {
    visibility: visible;
    opacity: 1;
  }
}

/* Main */
.main {
  position: relative;
  padding-top: var(--header-height-m);
}

@media screen and (min-width: 40em){
  .main {
    padding-top: var(--header-height-d);
  }
}

/* Hero section */
.hero {
  position: relative;
  height: calc(100vh - var(--header-height-m));
  background-color: var(--clr-hero);
}

@media screen and (min-width: 40em) {
  .hero {
    height: calc(100vh - var(--header-height-d));
    background-color: transparent;
  }
}

/* Hero container */
.hero__container {
  height: 100%;
  flex-direction: column;
  justify-content: center;
}

@media screen and (min-width: 40em) {
  .hero__container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: center;
  }
}



.hero__title {
  font-size: clamp(2rem, 6vw + 0.5rem, var(--fs-biggest));
  margin-bottom: 1.2rem;
}
.hero__title-underline {
  border-bottom: 0.25rem solid var(--clr-red);
}
.hero__paragraph {
  margin-bottom: 1rem;
}

/* Features container */
.features__container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(30rem, 100%), 1fr));
  gap: 2rem;
}

.features__text {
  max-width: 20.625rem;
}

.features__wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14.5rem, 1fr));
  gap: 2rem;
}

.feature__icon-wrapper {
  width: 4.375rem;
  height: 4.375rem;
  justify-content: center;
  align-items: center;
  border-radius: 0.625rem;
  margin-bottom: 1.5rem;
}

.feature__icon {
  width: 2.4375rem;
  height: 2.4375rem;
  fill: none;
}

.feature--1 .feature__icon-wrapper {
  background-color: var(--clr-lightBlue);
}

.feature--1 .feature__icon {
  stroke: var(--clr-primary);
}

.feature--2 .feature__icon-wrapper {
  background-color: var(--clr-lightRead);
}

.feature--2 .feature__icon {
  stroke: var(--clr-red);
  fill: var(--clr-red);
}

.feature--3 .feature__icon-wrapper {
  background-color: var(--clr-lightTurquoise);
}

.feature--3 .feature__icon {
  stroke: var(--clr-turquoise);
}

.feature--4 .feature__icon-wrapper {
  background-color: var(--clr-lightSaffron);
}

.feature--4 .feature__icon {
  stroke: var(--clr-saffron);
}

.feature__title {
  font-size: var(--fs-big);
  font-weight: var(--fw-medium);
  margin-bottom: 0.625rem;
}

.feature__paragraph {
  color: var(--clr-lightGray);
}

/* Portfolio */
.portfolio {
  text-align: center;
}

.portfolio__wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(21.875rem, 100%), 1fr));
  justify-content: center;
  gap: 1.8rem;
}

.portfolio__card {
  position: relative;
  border-radius: 1.25rem;
}

.card__image {
  width: 100%;
  height: 25rem;
  object-fit: cover;
  border-radius: inherit;
}

.card__content {
  margin-top: 1.5rem;
  text-align: left;
}

.card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card__title {
  font-size: var(--fs-big);
}

.card__description {
  padding-right: 1rem;
  color: var(--clr-lightGray);
}



/* Footer */
.footer {
  background-color: var(--clr-white);
  padding-top: clamp(2rem, 5vw, 5rem);
  padding-bottom: clamp(2rem, 5vw, 5rem);
  padding-left: clamp(2rem, 5vw, 5rem);
}

.footer__brand {
  display: inline-block;
  width: max-content;
  font-size: clamp(var(--fs-big), 4vw + 0.5rem, 2rem);
  font-weight: var(--fw-black);
  color: var(--clr-black);
}

.footer__social-icons {
  flex-wrap: wrap;
  gap: 1.5rem;
  margin: 2rem 0;
}

.social-icons__link {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 3.125rem;
  height: 3.125rem;
  font-size: 1.75rem;
  background-color: var(--clr-social-icon);
  color: var(--clr-gray);
  border-radius: 0.625rem;
  transition: none 300ms ease-in-out;
  transition-property: opacity, color, box-shadow;
}

.social-icons__link--dribbble:hover {
  color: var(--clr-dribbble);
  border-color: currentColor;
}
.social-icons__link--facebook:hover {
  color: var(--clr-facebook);
  border-color: currentColor;
}
.social-icons__link--twitter:hover {
  color: var(--clr-twitter);
  border-color: currentColor;
}
.social-icons__link--youtube:hover {
  color: var(--clr-youtube);
  border-color: currentColor;
}

.social-icons__link:hover {
  opacity: 0.8;
}



/*Play Button */
.overlay__btn_container {
  display: flex;
  width: 220px;
  height: auto;
  background: var(--clr-black);
  flex-direction: row;
  color: #fff;
  padding: 10px;
  border-radius: 0.8rem;
  text-decoration: none;
  text-align: left;
  align-items: center;
  transition: opacity 150ms ease;
}
.overlay__btn_container:hover{
  opacity: 0.6;
}
.overlay__btn_subcontainer {
  display: flex;
  flex-direction: column;
}
.overlay__btn_title {
  font-size: 14px;
}
.overlay__btn_subtitle {
  font-size: 20px;
}
.overlay__btn_playicon {
  width: 40px;
  margin-right: 15px;
}





/* iPhone Mocukup styles */

#iphone-x {
  height: 405px;
  min-width: 210px;
  max-width: 210px;
  margin-left: 5%;
  margin-top: 5%;
  overflow: hidden;
  display: inline-block;
  justify-self: flex-end;
  border: 12px solid var(--clr-black);
  border-radius: 36px;
  position: relative;
  background: rgba(1, 31, 43, 0.01)!important;
  box-shadow: 0 19px 38px rgb(0 0 0 / 31%), 0 15px 12px rgb(0 0 0 / 24%);
}

.iphone-x-notch {
  width: 56%;
  height: 14px;
  position: absolute;
  left: calc(50% - 28%);
  top: 0;
  display: flex;
  z-index: 9;
  justify-content: center;
  background: var(--clr-black);
  border-radius: 0 0 15px 15px;
}
.iphone-x-notch-grill {
  width: 30px;
  height: 3px;
  margin-top: 2px;
  background-color: #222;  
}

.volume {
  position: absolute;
}
.firstButtonVolume {
  width: 4px;
  height: 20px;
  margin: 40px -14px 20px;
  list-style: none;
  border-radius: 20%;
  background: #011F2B;
}
.otherButtonsLeft {
  width: 4px;
  height: 30px;
  list-style: none;
  margin: 6px -14px;
  background: #011F2B;
}
.rightButton {
  width: 4px;
  height: 59px; 
  list-style: none;
  position: absolute;
  right: -14px;
  top: 58px;
  border-radius: 20%;
  background: #011F2B;
}