html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background-color: #0d0d0d;
  color: #00ff9f;
  transition: background-color 0.5s, color 0.5s;
}

.background-color-layer {
  position: static;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.2;
  background-size: cover;
  background-position: center;
}

header {
  background: #000;
  padding: 20px;
  text-align: center;
  position: static;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid #00ff9f;
}

header h1 {
  margin: 0;
  font-size: 2.5rem;
}

header p {
  margin-top: 10px;
  font-size: 1.2rem;
}

.fa-icon {
  margin: 0 8px;
  color: #00ff9f;
  transition: color 0.3s;
}

.fa-icon:hover {
  color: #1affd5;
}

.content-wrapper {
  padding: 40px 20px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: #111;
  margin-bottom: 30px;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 0 10px #00ff9f50;
  transition: background 0.3s, box-shadow 0.3s;
}

.card:hover {
  background: #191919;
  box-shadow: 0 0 20px #00ff9f80;
}

.card h2 {
  border-bottom: 2px solid #00ff9f;
  padding-bottom: 10px;
  margin-bottom: 20px;
}

.date {
  font-size: 0.9rem;
  color: #1affd5;
}

.h5 {
  font-size: 1.2rem;
  margin: 10px 0;
}

ul {
  list-style: square;
  padding-left: 20px;
}

img.img-responsive {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 20px;
}

footer {
  background: #000;
  color: #00ff9f;
  padding: 20px 0;
  font-size: 0.9rem;
  border-top: 1px solid #00ff9f;
}

.toggle-btn {
  background: none;
  border: 2px solid #00ff9f;
  color: #00ff9f;
  padding: 8px 16px;
  border-radius: 10px;
  cursor: pointer;
  margin-top: 10px;
  font-family: 'Orbitron', sans-serif;
  transition: background 0.3s, color 0.3s;
}

.toggle-btn:hover {
  background: #00ff9f;
  color: #000;
}

.dark-mode {
  background-color: #f0f0f0;
  color: #001f1f;
}

.dark-mode header {
  background: #fff;
  color: #001f1f;
}

.dark-mode .fa-icon {
  color: #004d4d;
}

.dark-mode .card {
  background: #fff;
  box-shadow: 0 0 10px #004d4d50;
}

.dark-mode footer {
  background: #fff;
  color: #001f1f;
}
.about-section {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  flex-wrap: wrap;
}

.about-section img {
  width: 250px;
  height: auto;
  border-radius: 10px;
}

.about-text {
  flex: 1;
  min-width: 250px;
}
.skills-section {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: center;
}

.skills-list {
  flex: 1;
  min-width: 250px;
}

.certificates {
  flex: 1;
  min-width: 250px;
  display: flex;
  flex-direction: column;
  align-items: center; /* center certificates horizontally */
  justify-content: center; /* center certificates vertically */
  gap: 20px;
}

.certificates img {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: 10px;
  object-fit: contain;
}