:root {
  --dark-bg: #0f0f0f;
  --light-bg: #f8f9fa;
  --text-dark: #fff;
  --text-light: #212529;
  --accent-color: #00bfff;
  --transition-speed: 0.3s;
}
::-webkit-scrollbar {
  width: 12px;
  background-color: #0f0f0f;
}

::-webkit-scrollbar-thumb {
  background-color: #009acd;
  border-radius: 6px;
}

::-webkit-scrollbar-track {
  background-color: #0f0f0f;
}

body {
  transition: background-color var(--transition-speed),
    color var(--transition-speed);
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  scroll-behavior: smooth;
}
body.dark {
  background-color: var(--dark-bg);
  color: var(--text-dark);
}
body.light {
  background-color: var(--light-bg);
  color: var(--text-light);
}
.navbar {
  border-radius: 12px;
  transition: background-color var(--transition-speed);
}
body.dark .navbar {
  background-color: #121212 !important;
}
body.light .navbar {
  background-color: #e9ecef !important;
}
.navbar-brand {
  font-weight: 700;
  color: var(--accent-color) !important;
}
.nav-link {
  transition: color var(--transition-speed);
}
body.dark .nav-link {
  color: var(--text-dark) !important;
}
body.light .nav-link {
  color: var(--text-light) !important;
}
.nav-link:hover {
  color: var(--accent-color) !important;
}
.profile-img {
  width: 150px;
  border-radius: 50%;
  border: 3px solid var(--accent-color);
  transition: transform 0.3s;
  box-shadow: 0 0 12px var(--accent-color);
}
.profile-img:hover {
  transform: scale(1.1);
}
section {
  padding: 60px 15px;
  position: relative;
  overflow: hidden;
}
section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    circle at center,
    var(--accent-color) 0%,
    transparent 70%
  );
  opacity: 0.05;
  pointer-events: none;
  transform: translateZ(0);
  z-index: 0;
}
section > .container {
  position: relative;
  z-index: 1;
}
h1,
h2 {
  color: var(--accent-color);
  font-weight: 700;
  margin-bottom: 1rem;
}
ul {
  list-style: none;
  padding-left: 0;
  max-width: 600px;
  margin: 0 auto;
}
ul li {
  background: rgba(0, 191, 255, 0.1);
  padding: 8px 15px;
  margin-bottom: 8px;
  border-radius: 8px;
  color: inherit;
  font-weight: 600;
  transition: background-color 0.3s;
}
ul li:hover {
  background: rgba(0, 191, 255, 0.3);
}
#projects .row {
  gap: 1.5rem;
  justify-content: center;
}
.project-card {
  background: linear-gradient(145deg, #1a1a1a, #0c0c0c);
  border: 1px solid rgba(0, 191, 255, 0.4);
  border-radius: 16px;
  padding: 24px;
  color: white;
  box-shadow: 0 8px 16px rgba(0, 191, 255, 0.1);
  transition: transform 0.4s, box-shadow 0.4s;
  max-width: 350px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.project-card button {
  margin-top: 1.1rem;
}
.project-card:hover {
  cursor: pointer;
  transform: translateY(-10px) scale(1.03);
  box-shadow: 0 16px 32px rgba(0, 191, 255, 0.4);
}
.project-card h5 {
  color: var(--accent-color);
  font-weight: bold;
  margin-bottom: 0.5rem;
}
.project-card p {
  color: #d1d1d1;
  flex-grow: 1;
}
.tech-icons {
  margin: 12px 0;
}
.tech-icons i {
  font-size: 22px;
  margin-right: 10px;
  color: var(--accent-color);
}
.btn-doc,
.btn-deploy {
  border: none;
  padding: 8px 18px;
  border-radius: 8px;
  margin-right: 10px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-doc {
  background-color: var(--accent-color);
  color: white;
}
.btn-doc:hover {
  background-color: #009acd;
}
.btn-deploy {
  background-color: gray;
  color: white;
  cursor: not-allowed;
}
#contact a {
  color: var(--accent-color);
  font-weight: 600;
  text-decoration: none;
  transition: color 0.3s;
}
#contact a:hover {
  color: #009acd;
  text-decoration: underline;
}
.dropdown-menu {
  min-width: 140px;
}
.flag-icon,
.theme-icon {
  width: 24px;
  height: 24px;
  cursor: pointer;
}
body.fade {
  transition: opacity 0.4s ease;
  opacity: 0;
}
.experience-item,
.education-item {
  background: rgba(0, 191, 255, 0.1);
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 20px;
  transition: transform 0.3s, box-shadow 0.3s;
}
.experience-item:hover,
.education-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 191, 255, 0.2);
}
.experience-icon,
.education-icon {
  font-size: 24px;
  color: var(--accent-color);
  margin-right: 15px;
}
.experience-date,
.education-date {
  color: var(--accent-color);
  font-weight: 600;
}
@media (max-width: 768px) {
  .project-card {
    max-width: 100%;
  }
  ul {
    max-width: 100%;
  }
}

.extra-list {
  list-style: none;
  padding: 0;
  margin: 40px auto;
  max-width: 300px;
  text-align: center;
}

.extra-list li {
  margin: 15px 0;
  background-color: transparent;
  border: 2px solid #1e90ff;
  border-radius: 8px;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.extra-list a {
  text-decoration: none;
  font-weight: 600;
  font-size: 20px;
  padding: 10px 20px;
  color: #1e90ff;
  display: block;
  width: 100%;
  box-sizing: border-box;
  cursor: pointer;
  transition: color 0.3s ease;
  border-radius: 6px;
}

.extra-list li:hover,
.extra-list li:focus {
  background-color: #1e90ff;
  border-color: #1e90ff;
  outline: none;
}

.extra-list li:hover a,
.extra-list li:focus a {
  color: white;
}