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

:root {
  --color-bg: #0f172b;
  --color-bg-card: #131d35;
  --color-green: #00df68;
  --color-green-dark: #00b854;
  --color-white: #ffffff;
  --color-gray: #94a3b8;
  --color-border: rgba(0, 223, 104, 0.2);
  --font-heading: "Orbitron", sans-serif;
  --font-body: "Rajdhani", sans-serif;
  --container-max: 1400px;
  --container-padding: 120px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  text-decoration: none;
  color: inherit;
}

ul,
ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  padding: 14px 40px;
  border-radius: 50px;
  border: 2px solid var(--color-green);
  background: transparent;
  color: var(--color-green);
  cursor: pointer;
  transition:
    background 0.3s,
    color 0.3s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn:hover {
  background: var(--color-green);
  color: var(--color-bg);
}

.btn--filled {
  background: var(--color-green);
  color: var(--color-bg);
}

.btn--filled:hover {
  background: var(--color-green-dark);
  border-color: var(--color-green-dark);
}

@media (max-width: 1280px) {
  :root {
    --container-padding: 60px;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
  }
}