:root {
  --bg-color: #f9f9fc;
  --text-color: #333;
  --header-bg: #ffffff;
  --footer-bg: #eeeeee;
  --button-bg: #0078d7;
  --button-hover: #005fa3;
}

body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: var(--bg-color);
  color: var(--text-color);
  line-height: 1.6;
}

header {
  background: var(--header-bg);
  text-align: center;
  padding: 40px 20px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.profile-pic {
  width: 140px;
  border-radius: 50%;
  border: 4px solid #ddd;
  margin-bottom: 10px;
}

header h1 {
  margin: 10px 0 4px;
}

header p {
  color: #666;
}

.buttons {
  margin-top: 15px;
}

.btn {
  display: inline-block;
  padding: 10px 16px;
  margin: 6px;
  border-radius: 25px;
  background: var(--button-bg);
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s ease;
}

.btn:hover {
  background: var(--button-hover);
  transform: scale(1.05);
}

main {
  max-width: 900px;
  margin: auto;
  padding: 30px 20px;
}

.section-box {
  background: #ffffff;
  padding: 30px 25px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
  margin-bottom: 40px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.section-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
}

h2 {
  border-bottom: 2px solid #ccc;
  padding-bottom: 6px;
  margin-bottom: 16px;
}

/* Skills */
.skills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 10px;
}

.skill-btn {
  background: var(--button-bg);
  color: white;
  padding: 10px 16px;
  border-radius: 25px;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.3s;
  user-select: none;
}

.skill-btn:hover {
  transform: scale(1.1);
  box-shadow: 0 0 12px rgba(0, 0, 0, 0.2);
}

/* Project Grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.project-card {
  background: #f1f3f6;
  padding: 20px;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Footer */
footer {
  background: var(--footer-bg);
  text-align: center;
  padding: 15px;
  font-size: 14px;
  color: #666;
}

/* Animations */
.animated {
  opacity: 0;
  animation-fill-mode: forwards;
  animation-duration: 1s;
  animation-timing-function: ease-out;
}

.fade-in { animation-name: fadeIn; }
.slide-up { animation-name: slideUp; }
.scale-in { animation-name: scaleIn; }
.zoom-in { animation-name: zoomIn; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes zoomIn {
  from { opacity: 0; transform: scale(0.6); }
  to { opacity: 1; transform: scale(1); }
}

.delay-0 { animation-delay: 0.2s; }
.delay-1 { animation-delay: 0.4s; }
.delay-2 { animation-delay: 0.6s; }
.delay-3 { animation-delay: 0.8s; }
.delay-4 { animation-delay: 1.0s; }
.delay-5 { animation-delay: 1.2s; }

.small-btn {
  font-size: 14px;
  padding: 8px 16px;
  display: inline-block;
  margin-top: 10px;
}