body {
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: linear-gradient(120deg, #23272f 0%, #23272f 60%, #2c2c2c 100%);
  color: #eee;
  min-height: 100vh;
}

.sidebar-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.sidebar-logo {
  width: 45px;
  height: 45px;
  border-radius: 10px;
  box-shadow: 0 2px 8px #0003;
}

.sidebar-title {
  font-size: 1.2rem;
  color: #ffd54f;
  font-weight: bold;
  letter-spacing: 1px;
}

.sidebar {
  position: fixed;
  top: 0;
  left: -280px;
  width: 250px;
  height: 100vh;
  background: rgba(35, 39, 47, 0.95);
  border-right: 2px solid #ffd54f33;
  box-shadow: 2px 0 8px #0008;
  padding: 20px;
  backdrop-filter: blur(12px);
  transition: left 0.4s ease-in-out;
  z-index: 1000;
}

.sidebar.active { left: 0; }

.sidebar .menu {
  list-style: none;
  padding: 0;
}

.sidebar .menu li { margin: 15px 0; }

.sidebar .menu a {
  text-decoration: none;
  font-size: 17px;
  display: flex;
  align-items: center;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 12px;
  color: #eee;
  transition: background 0.2s, transform 0.2s;
}

.sidebar .menu a:hover {
  background: rgba(255,255,255,0.1);
  transform: translateX(4px);
}

.sidebar .menu a .icon {
  width: 22px;
  height: 22px;
  margin-right: 10px;
}

#toggleBtn {
  position: fixed;
  top: 15px;
  left: 10px;
  font-size: 26px;
  background: #ffd54f;
  color: #23272f;
  border: none;
  padding: 10px 16px;
  cursor: pointer;
  border-radius: 8px;
  box-shadow: 0 2px 8px #0005;
  z-index: 1100;
}

#toggleBtn:hover { background: #fff176; }

#closeBtn {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 22px;
  background: transparent;
  border: none;
  cursor: pointer;
  color: #ff4d4d;
  transition: transform 0.2s;
}

#closeBtn:hover { transform: scale(1.2) rotate(8deg); }

.main {
  padding: 80px 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.profile-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(35, 39, 47, 0.85);
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 6px 24px #0006;
  margin-bottom: 40px;
}


.profile-card h1 {
  font-size: 2.2rem;
  color: #ffd54f;
  margin: 0 0 10px;
}

.role {
  font-size: 1.2rem;
  color: #90caf9;
  margin: 5px 0;
}

.university {
  font-size: 1rem;
  color: #bbb;
}

.skills h2 {
  font-size: 1.8rem;
  color: #64b5f6;
  margin-bottom: 20px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.skill-card {
  background: rgba(35, 39, 47, 0.9);
  padding: 20px;
  border-radius: 14px;
  box-shadow: 0 4px 16px #0005;
  transition: transform 0.3s, box-shadow 0.3s;
}

.skill-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 8px 24px #ffd54f33;
}

.skill-card h3 {
  font-size: 1.3rem;
  color: #ffd54f;
  margin-bottom: 8px;
}

.skill-card p {
  font-size: 1rem;
  color: #ddd;
}