@import url('https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap');

:root {
  --primary-color: #f60f20;
  --secondary-color: #1b206e;
}

/* base styles */

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

html,
body {
  font-family: 'Poppins', sans-serif;
  color: #111;
}

h1 {
  font-size: 30px;
  font-weight: 500;
}

p {
  margin: 20px 0 10px 0;
  /* top right bottom left; we might leave out left */
  font-size: 1.1rem;
}

section {
  display: flex;
  flex-direction: column;
  height: 100vh;
  align-items: center;
  padding: 100px;
  margin-top: 60px;
}

section.home {
  flex-direction: row;
  margin-top: 0;
}

/* button */

.btn {
  cursor: pointer;
  display: inline-block;
  /* w/o this it doesn't work because links are displayed inline and margin can't be added to them */
  background: var(--primary-color);
  color: #fff;
  text-decoration: none;
  padding: 10px 30px;
  /* top-bottom and left-right */
  margin: 20px 0;
}

.btn:hover {
  transform: scale(0.98);
}

.logo {
  position: absolute;
  top: 30px;
  left: 100px;
  font-size: 2rem;
  font-weight: 700;
  z-index: 20;
}

/* NAVIGATION */
.navigation {
  padding-left: 30px;
  padding-right: 30px;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 25;
  background-color: white;
  border-bottom: gray;
  border-width: 2px;
}

.navigation-ul {
  z-index: 25;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navigation.active {
  left: 0;
}

.navigation ul {
  position: relative;
}

.navigation ul li {
  position: relative;
  list-style: none;
  text-align: center;
}

.navigation ul li a {
  font-size: 2.2rem;
  color: #111;
  text-decoration: none;
  font-weight: 300;
}

.navigation ul li a:hover {
  color: var(--primary-color);
}

.navigation .email-icon {
  position: absolute;
  bottom: 20px;
  transform: scale(0.5);
}

.navigation-ul li:hover .dropdown {
  display: block;
}

.dropdown {
  display: none;
  position: absolute;
  background-color: #f8f8f8;
  box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.2);
  z-index: 1;
}

.dropdown a {
  padding: 10px;
  text-decoration: none;
  display: block;
  color: black;
}

.dropdown a:hover {
  background-color: #ddd;
}

/* HOMEPAGE */
.home-content {
  position: relative;
  z-index: 10;
  max-width: 600px;
}

.home-img {
  position: absolute;
  bottom: 0;
  right: 0;
  height: 110%;
}

/* PRACTICE TESTS */
.services {
  margin: 40px 40px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.services .service {
  padding: 30px;
}

.services .service:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.services .service h2 {
  font-size: 24px;
  font-weight: 500;
  margin-top: 20px;
  color: var(--secondary-color);
}

.services .service .icon img {
  max-width: 200px;
}

/* ARTICLES */
.portfolio {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}

.portfolio .item {
  position: relative;
  width: 300px;
  height: 300px;
  margin: 5px;
}

.portfolio .item img {
  width: 100%;
  height: 100%;
}

.portfolio .item .action {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transition: 0.5s;
}

.portfolio .item:hover .action {
  opacity: 1;
}

.portfolio .item .action a {
  display: inline-block;
  color: #fff;
  text-decoration: none;
  border: 1px solid #fff;
  padding: 5px 15px;
  margin: 5px 5px;
}


@media (max-width: 768px) {
  .portfolio {
    display: block; /* Change display to block for mobile devices */
    text-align: center; /* Center align items */
  }

  .portfolio .item {
    width: 80%; /* Adjust width to fit mobile screens */
    margin: 0 auto 20px; /* Center align items and add spacing */
  }

  .portfolio .item .action {
    opacity: 0.7;
  }
}


/* CONTACT */
.contact {
  position: relative;
  width: 100%;
  margin-top: 50px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.contact-form {
  position: relative;
  background: #f9f9f9;
  width: calc(100% - 400px);
  padding: 60px 40px 20px;
}

.contact-form form {
  width: 100%;
}

.contact-form .row {
  width: 100%;
  display: flex;
}

.contact-form .input50 {
  width: 50%;
  margin: 0 10px;
}

.contact-form .input100 {
  width: 100%;
  margin: 0 10px;
}

.contact-form .row input,
.contact-form .row textarea {
  position: relative;
  border: 1px solid rgba(0, 0, 0, 0.2);
  color: #111;
  background: transparent;
  width: 100%;
  padding: 10px;
  outline: none;
  font-size: 16px;
  font-weight: 300;
  margin: 10px 0;
  resize: none;
}

.contact-form .row textarea {
  height: 150px;
}

.contact-form .row input[type='submit'] {
  background-color: var(--secondary-color);
  color: #fff;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 300;
  border: 0;
  cursor: pointer;
}

.contact-info {
  width: 350px;
  background: #f9f9f9;
  padding: 60px 40px 20px;
}

.contact-info .info-box {
  display: flex;
  align-items: flex-start;
  margin-bottom: 40px;
}

.contact-info .info-box .contact-icon {
  width: 20px;
  margin-right: 40px;
}

.contact-info .info-box .details h4 {
  color: var(--secondary-color);
}

.contact-info .info-box .details p,
.contact-info .info-box .details a {
  color: #111;
}

@media (max-width: 768px) {
  .home-img {
    display: none;
  }

  .logo {
    top: 10px;
    left: 40px;
    font-size: 1.5rem;
  }

  section {
    padding: 100px 40px;
  }

  .navigation ul li a {
    font-size: 1.0rem;
  }

  .services {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact {
    flex-direction: column;
  }

  .contact-form {
    width: 100%;
    padding: 30px 30px 20px;
  }

  .contact-form .row {
    flex-direction: column;
  }

  .contact-form .input50,
  .contact-form .input100 {
    width: 100%;
    margin: 0;
  }

  .contact-info {
    width: 100%;
    margin-top: 20px;
    padding: 30px 30px 20px;
  }
}

@media (max-width: 768px) {
  .services {
    grid-template-columns: 1fr;
  }

  .services .service {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  }
}

/* ARTICLES */

/* section.article {
    background-color: #1b206e;
} */

.article img {
    width: 600px;
    height: 600px;
    margin: 40px 0px;
}

.article-text {
    width: 60%;
    text-align: justify;
}

.bold-text {
  font-weight: bold;
}

.italic-text {
  font-style: italic;
}

.strikethrough-text {
  text-decoration: line-through;
}

.underline-text {
  text-decoration: underline;
}

.div-m {
  margin-top: 50px;
}

.main-section {
  margin: 0 200px;
}

.div-m {
  margin-top: 50px;
}

.test-section {
  margin-top: 20px;
}

.section-info {
  font-weight: 900;
}


/* PRACTICE TESTS */ 
.practice-tests-overview {
  margin: 80px 50px;
}


/* AUTHOR PAGE */
section.author {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 100px;
  margin-top: 60px;
  height: 60vh;
}


/* TABLE OF CONTENTS */
.toc {
  border: 1px solid #ddd;
  padding: 10px;
  margin-bottom: 20px;
  background-color: #f9f9f9;
}

.toc h3 {
  margin-top: 0;
}

.toc ul {
  list-style-type: none;
  padding-left: 0;
}

.toc li {
  margin-bottom: 5px;
}

.toc a {
  text-decoration: none;
  color: #007bff;
}

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