body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  padding: 0;
  background: linear-gradient(135deg, #1f1f1f, #3a3a3a);
  color: #e6e6e6;
}

.navbar {
  background: rgba(0, 0, 0, 0.7) !important;
  backdrop-filter: blur(6px);
}

header {
  background: linear-gradient(145deg, #2a2a2a, #1c1c1c);
  color: white;
  padding: 26rem 2rem;
  min-height: 100vh;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

section {
  scroll-margin-top: 8rem;
  max-width: 900px;
  margin: 12rem auto;
  background: #2d2d2d;
  min-height: 70vh;
  padding: 3rem;
  border-radius: 20px;
  box-shadow: 0 0 25px rgba(0,0,0,0.4);
  color: #f0f0f0;
}

section h2 {
  border-left: 6px solid #888;
  padding-left: 1rem;
  margin-bottom: 2rem;
  font-size: 2rem;
  letter-spacing: 1px;
}

.project-card {
  background: #3b3b3b;
  padding: 2rem;
  border-radius: 15px;
  transition: 0.3s;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 25px rgba(255,255,255,0.1);
}

.btn-dark {
  background: #555 !important;
  border: none;
  transition: 0.2s;
}

.btn-dark:hover {
  background: #777 !important;
}

.skill, .lang {
  padding: 1rem;
  background: #3b3b3b;
  border-radius: 10px;
  position: relative;
  cursor: pointer;
  overflow: hidden;
  margin-bottom: 0.8rem;
}

.fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, rgba(255,255,255,0.08), rgba(255,255,255,0.16));
  transition: width 0.7s cubic-bezier(.2,.9,.2,1);
  border-radius: 10px;
  z-index: 0;
}

.label {
  position: relative;
  z-index: 1;
  font-weight: 600;
}

.percent {
  position: relative;
  z-index: 1;
  float: right;
  font-weight: 700;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.skill:hover .percent, .lang:hover .percent,
.skill.active .percent, .lang.active .percent {
  opacity: 1;
}

@media (max-width:720px) {
  header {
    padding: 8rem 1.2rem;
  }
  section {
    margin: 6rem 1rem;
    padding: 1.6rem;
  }
}