* {
  box-sizing: border-box;
}
html,
body {
  overflow-x: hidden;
}
:root {
  --bg-dark: #0d1117;
  --bg-section: #1f2a38;
  --accent: #00d1ff;
  --text-main: #ffffff;
  --text-muted: #bbbbbb;
  --shadow-color: rgba(0, 209, 255, 0.2);
  --transition: all 0.3s ease-in-out;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  font-family: "Inter", sans-serif;
  scroll-behavior: smooth;
}

h1,
h2,
h3,
h4 {
  font-weight: 600;
}

.text-accent {
  color: var(--accent) !important;
}

.bg-section {
  background-color: var(--bg-section);
}

.border-accent {
  border-color: var(--accent) !important;
}

.btn-accent,
.btn-outline-accent {
  border: 1px solid var(--accent);
  transition: var(--transition);
  font-weight: 500;
}

.btn-accent {
  background-color: var(--accent);
  color: #000;
}

.btn-accent:hover {
  background-color: #0e7c9f;
  color: #fff;
  border-color: #0e7c9f;
}

.btn-outline-accent {
  background-color: transparent;
  color: var(--accent);
}

.btn-outline-accent:hover {
  background-color: var(--accent);
  color: #000;
}

.shadow-sm {
  box-shadow: 0 4px 12px var(--shadow-color);
}

.shadow-lg {
  box-shadow: 0 8px 20px var(--shadow-color);
}

i.bi {
  vertical-align: middle;
}

.navbar {
  background-color: #0d1b2a;
  padding: 1rem 0;
}

.navbar .nav-link {
  color: #e0e1dd;
  margin: 0 0.5rem;
  transition: color 0.3s ease;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
  color: #00d1ff;
}

.bg-footer {
  background: #1b263b;
}

.footer-link {
  color: #e0e1dd;
  text-decoration: none;
  margin: 0 0.4rem;
}

.footer-link:hover {
  color: #00d1ff;
}

.social-icons a {
  margin: 0 0.4rem;
  color: #e0e1dd;
  font-size: 1.4rem;
  transition: color 0.3s;
}

.social-icons a:hover {
  color: #00d1ff;
}

.text-accent {
  color: #00d1ff;
}

footer {
  background-color: var(--bg-section);
  padding: 2rem 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

footer a {
  color: var(--accent);
  transition: var(--transition);
}

footer a:hover {
  color: #ffffff;
  text-decoration: underline;
}

input,
textarea {
  background-color: #161b22;
  border: 1px solid #444;
  color: var(--text-main);
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 0.2rem rgba(0, 209, 255, 0.25);
  background-color: #161b22;
}

[data-aos] {
  opacity: 0;
  transform: translateY(40px);
  transition-property: opacity, transform;
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .navbar-nav .nav-link {
    margin-left: 0.5rem;
  }

  h2 {
    font-size: 1.8rem;
  }

  .text-center p {
    font-size: 0.95rem;
  }
}