/*
=============== 
Fonts
===============
*/

@import url("https://fonts.googleapis.com/css?family=Open+Sans|Roboto:400,700&display=swap");

/*
=============== 
Variables
===============
*/

:root {
  /* dark shades of primary color*/
  --clr-primary-1: hsl(205, 86%, 17%);
  --clr-primary-2: hsl(205, 77%, 27%);
  --clr-primary-3: hsl(205, 72%, 37%);
  --clr-primary-4: hsl(205, 63%, 48%);
  /* primary/main color */
  --clr-primary-5: #49a6e9;
  /* lighter shades of primary color */
  --clr-primary-6: hsl(205, 89%, 70%);
  --clr-primary-7: hsl(205, 90%, 76%);
  --clr-primary-8: hsl(205, 86%, 81%);
  --clr-primary-9: hsl(205, 90%, 88%);
  --clr-primary-10: hsl(205, 100%, 96%);
  /* darkest grey - used for headings */
  --clr-grey-1: hsl(209, 61%, 16%);
  --clr-grey-2: hsl(211, 39%, 23%);
  --clr-grey-3: hsl(209, 34%, 30%);
  --clr-grey-4: hsl(209, 28%, 39%);
  /* grey used for paragraphs */
  --clr-grey-5: hsl(210, 22%, 49%);
  --clr-grey-6: hsl(209, 23%, 60%);
  --clr-grey-7: hsl(211, 27%, 70%);
  --clr-grey-8: hsl(210, 31%, 80%);
  --clr-grey-9: hsl(212, 33%, 89%);
  --clr-grey-10: hsl(210, 36%, 96%);
  --clr-white: #fff;
  --clr-red-dark: hsl(360, 67%, 44%);
  --clr-red-light: hsl(360, 71%, 66%);
  --clr-green-dark: hsl(125, 67%, 44%);
  --clr-green-light: hsl(125, 71%, 66%);
  --clr-black: #222;
  --ff-primary: "Roboto", sans-serif;
  --ff-secondary: "Open Sans", sans-serif;
  --transition: all 0.3s linear;
  --spacing: 0.25rem;
  --radius: 0.5rem;
  --light-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  --dark-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  --max-width: 1170px;
  --fixed-width: 620px;
}

/*
=============== 
Global Styles
===============
*/

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

body {
  font-family: var(--ff-secondary);
  background: var(--clr-grey-10);
  color: var(--clr-grey-1);
  line-height: 1.5;
  font-size: 0.875rem;
}

ul {
  list-style-type: none;
}

a {
  text-decoration: none;
}

img:not(.logo) {
  width: 100%;
}

img {
  display: block;
}

h1,
h2,
h3,
h4 {
  letter-spacing: var(--spacing);
  text-transform: capitalize;
  line-height: 1.25;
  margin-bottom: 0.75rem;
  font-family: var(--ff-primary);
}

h1 {
  font-size: 3rem;
}

h2 {
  font-size: 2rem;
  color: rgb(255, 255, 255);
}

h3 {
  font-size: 1.25rem;
}

h4 {
  font-size: 0.875rem;
}

p {
  margin-bottom: 1.25rem;
  color: rgb(203 203 205);
}

@media screen and (min-width: 800px) {
  h1 {
    font-size: 4rem;
  }
  h2 {
    font-size: 2.5rem;
  }
  h3 {
    font-size: 1.75rem;
  }
  h4 {
    font-size: 1rem;
  }
  body {
    font-size: 1rem;
  }
  h1,
  h2,
  h3,
  h4 {
    line-height: 1;
  }
}

/*  global classes */

.btn {
  text-transform: uppercase;
  background: transparent;
  color: var(--clr-black);
  padding: 0.375rem 0.75rem;
  letter-spacing: var(--spacing);
  display: inline-block;
  transition: var(--transition);
  font-size: 0.875rem;
  border: 2px solid var(--clr-black);
  cursor: pointer;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  border-radius: var(--radius);
}

.btn:hover {
  color: var(--clr-white);
  background: var(--clr-black);
}

/* section */

.section {
  background-image: url(./../image/background.jpeg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.section::before {
  content: "";
  position: absolute;
  top: 0; 
  left: 0;
  width: 100%;
  height: 100%;
  background: rgb(0, 0, 0, 0.3);
  opacity: 1;
}

.section-center {
  width: 50vw;
  margin: 0 auto;
  /* max-width: 1170px; */
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* @media screen and (min-width: 992px) {
  .section-center {
    width: 50vw;
  }
} */

main {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

/*
=============== 
About
===============
*/

.title {
  text-align: center;
  margin-bottom: 2rem;
  z-index: 1;
}

.title p {
  width: 80%;
  margin: 0 auto;
  color: white;
}

.about {
  display: grid;
  grid-template-rows: auto 1fr;
  z-index: 2;
  backdrop-filter: blur(30px);
  border-radius: 10px;
}

.btn-container {
  display: flex;
  backdrop-filter: blur(30px);
  background-color: rgb(0 0 0/0.3);
  mix-blend-mode: hard-light;
  border-radius: 10px;
  border: 0.0625rem solid rgb(255 255 255/0.1);
  padding-left: 12px;
  padding-right: 12px;
}

.tab-btn:nth-child(1) {
  border-top-left-radius: 0.0625rem;
}

.tab-btn:nth-child(3) {
  border-top-right-radius: 0.0625rem;
}

.tab-btn {
  height: 50px;
  border: none;
  text-transform: capitalize;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: var(--spacing);
  color: rgb(152 152 154);
  padding: 15px 30px;
  font-weight: 600;
}

.tab-btn:hover:not(.active) {
  background-color: rgb(255 255 255/0.15);
  color: rgb(255 255 255);
  font-weight: 600;
}

.about-content {
  border-radius: 10px;
  border: 0.0625rem solid rgb(255 255 255/0.1);
  padding: 30px;
  background-color: rgb(0 0 0/0.3);
  color: rgb(255 255 255);
  backdrop-filter: blur(30px);
}

/* hide content */

.content {
  display: none;
}

.tab-btn.active {
  background-color: rgb(255 255 255/0.15);
  color: rgb(255 255 255);
  font-weight: 600;
}

.content.active {
  display: block;
}