* {
  margin: 0;
  padding: 0;
}

:root {
  --primary-color: #FF8401;
  --secondary-color: #EF8E00;
  --banner-color: #FFFFFF;
  --primary-background: #F3F3F3;
  --secondary-background: #F4F4F4;
  --list-background: #E1E1E1;
  --title-color: #333333;
  --font-color: #555555;
}

body {
  font-family: "Poppins", system-ui;
  font-weight: 300;
  font-style: normal;
}

.header {
  position: fixed;
  top: 0;
  left: 0;

  width: 100%;
  background-color: var(--primary-background);
  box-shadow: 0 0px 10px rgba(0, 0, 0, 0.1);
}

.header__container {
  padding: 20px 5%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.header__logo a {
  color: var(--title-color);
  font-size: 2rem;
  font-weight: 500;
  text-decoration: none;
}

.header__logo a:hover {
  color: var(--font-color);
}

.header__logo a:hover span {
  color: var(--secondary-color);
}

h1,
h2,
h3 {
  color: var(--title-color);
  font-size: 1.5rem;
}

span {
  color: var(--primary-color);
}

.header__nav ul {
  display: flex;
  gap: 20px;
  list-style: none;
}

.header__nav a {
  color: var(--title-color);
  font-size: 1.1rem;
  text-decoration: none;
}

.header__nav a:hover {
  color: var(--secondary-color);
}

.header__btn .btn-contact {
  background-color: var(--primary-color);
  padding: 10px 20px;
  border-radius: 35px;

  color: var(--primary-background);
  text-decoration: none;
}

.header__btn .btn-contact:hover {
  background-color: var(--secondary-color);
}

.container {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.banner {
  background-color: var(--secondary-background);
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 10vh;
}

.banner__content {
  background-color: var(--banner-color);
  height: 90vh;
  width: 100vw;
  padding: 0 5%;
  display: flex;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.1);
}

.content-copy {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 50%;
}

.content-copy h1 {
  color: var(--title-color);
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.content-copy p {
  color: var(--font-color);
  font-size: 1.2rem;
  margin-bottom: 30px;
}

.banner__btn {
  display: flex;
  gap: 20px;
}

.btn-download {
  background-color: var(--primary-color);
  padding: 10px 20px;
  border-radius: 35px;

  color: var(--banner-color);
  font-weight: bold;
  text-decoration: none;
}

.btn-download:hover {
  background-color: var(--secondary-color);
}

.banner__image {
  display: flex;
  justify-content: center;
  align-items: center;
  flex: 50%;
}

.banner__image img {
  max-width: 100%;
}

.about {
  padding: 5% 10%;
}

.about h2,
h3 {
  padding: 35px 0 15px;
}

.list {
  background-color: var(--primary-background);
  padding: 35px;
  border-radius: 10px;
  list-style: none;
}

.list li {
  padding: 5px 20px;
}

.list span {
  font-weight: 500;
  color: var(--title-color);
}

.conceptual {
  background-color: var(--primary-background);
  padding: 5% 10%;
}

.conceptual h2 {
  padding: 35px 0 15px;
}

.conceptual__model {
  background-color: var(--banner-color);
  border-radius: 10px;
  text-align: center;
  padding: 10vh 0;
}

.conceptual .list {
  background-color: var(--list-background);
}

.logical {
  background-color: var(--banner-color);
  padding: 5% 10%;
}

.logical h2 {
  padding: 35px 0 15px;
}

.logical__model {
  background-color: var(--banner-color);
  border-radius: 10px;
  text-align: center;
  padding: 10vh 0;
}

.footer {
  background-color: var(--secondary-background);
  width: 100%;
  padding: 20px;

  color: var(--font-color);
  text-align: center;
  font-weight: 300;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 400;
}

.footer a:hover {
  color: var(--secondary-color);
}