:root {
  --bg-color: #0f172a;
  --text-color: #ffffff;
  --accent-color: #60a5fa;
  --highlight: #38bdf8;
  --section-heading: #93c5fd;
  --timeline-line: #60a5fa;
  --timeline-dot: #38bdf8;
  --timeline-text: #cbd5e1;
}

body.light {
  --bg-color: #f1f5f9;
  --text-color: #1e293b;
  --accent-color: #0ea5e9;
  --highlight: #2563eb;
  --section-heading: #3b82f6;
  --timeline-line: #0ea5e9;
  --timeline-dot: #2563eb;
  --timeline-text: #475569;
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  font-family: 'Poppins', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  height: 100%;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

#particles-js {
  position: fixed;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: linear-gradient(135deg, #0f172a, #1e3a8a);
}

.container {
  position: relative;
  z-index: 1;
  padding: 30px 20px;
  max-width: 1100px;
  margin: auto;
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 45px;
  height: 45px;
  font-size: 20px;
  cursor: pointer;
  z-index: 1000;
  box-shadow: 0 0 15px var(--accent-color);
  transition: transform 0.3s ease;
}
.theme-toggle:hover {
  transform: rotate(30deg) scale(1.05);
}

/* Hero Section */
.hero {
  text-align: center;
  margin-top: 80px;
}

.profile-pic {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 5px solid var(--highlight);
  box-shadow: 0 0 30px var(--highlight);
  object-fit: cover;
  transition: transform 0.3s ease;
}
.profile-pic:hover {
  transform: scale(1.05);
}

.hero-name {
  font-size: 2.8rem;
  margin-top: 20px;
  background: linear-gradient(to right, var(--accent-color), #a855f7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title {
  font-size: 1.25rem;
  color: var(--text-color);
  min-height: 32px;
  margin-top: 5px;
}

.btn-glow {
  margin-top: 25px;
  padding: 14px 28px;
  background: var(--highlight);
  color: white;
  border-radius: 30px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 0 20px var(--highlight);
  display: inline-block;
}
.btn-glow:hover {
  background: var(--accent-color);
  box-shadow: 0 0 35px var(--highlight);
  transform: scale(1.08);
}

/* Section Styling */
section {
  margin-top: 70px;
  text-align: center;
}

h2 {
  font-size: 2rem;
  color: var(--section-heading);
  margin-bottom: 20px;
  position: relative;
}

h2::after {
  content: "";
  width: 70px;
  height: 4px;
  background: linear-gradient(to right, #22d3ee, #6366f1);
  margin: 10px auto;
  border-radius: 6px;
  display: block;
  animation: underlinePulse 2s infinite alternate;
}

@keyframes underlinePulse {
  0% {
    transform: scaleX(1);
    opacity: 0.6;
  }
  100% {
    transform: scaleX(1.3);
    opacity: 1;
  }
}

p {
  font-size: 1.05rem;
  max-width: 750px;
  margin: 12px auto;
  line-height: 1.7;
  color: var(--text-color);
  text-align: center;
}

/* Skill Tags */
.skill-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: 18px;
}
.skill-tags span {
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--accent-color);
  border-radius: 25px;
  transition: all 0.3s ease;
  font-weight: 500;
  color: var(--text-color);
}
.skill-tags span:hover {
  background: var(--accent-color);
  color: var(--bg-color);
}

/* Projects */
.project-grid {
  display: grid;
  gap: 25px;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 25px;
}
.project-card {
  background: rgba(255, 255, 255, 0.08);
  padding: 20px;
  border-left: 4px solid var(--highlight);
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}
.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 0 25px var(--accent-color);
}

/* Timeline */
.timeline {
  position: relative;
  margin-top: 40px;
  padding-left: 30px;
  border-left: 3px solid var(--timeline-line);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 20px;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -12px;
  top: 0;
  width: 18px;
  height: 18px;
  background: var(--timeline-dot);
  border-radius: 50%;
  border: 3px solid var(--bg-color);
  box-shadow: 0 0 15px var(--timeline-dot);
}

.timeline-date {
  font-size: 0.9rem;
  color: var(--timeline-text);
  margin-bottom: 6px;
  display: inline-block;
  font-weight: 500;
}

.timeline-content h3 {
  font-size: 1.25rem;
  color: var(--text-color);
  margin: 6px 0 10px;
}

.timeline-content p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-color);
  max-width: 700px;
  margin: auto;
  text-align: left;
}

/* Footer */
footer {
  margin-top: 70px;
  text-align: center;
  padding: 20px;
  font-size: 0.95rem;
  color: #cbd5e1;
}

/* General Links */
a {
  color: var(--accent-color);
  text-decoration: none;
}
a:hover {
  color: var(--highlight);
}

/* Lists */
ul {
  list-style: none;
  padding: 0;
}
ul li {
  margin: 8px 0;
  font-size: 1rem;
  line-height: 1.6;
}

/* Responsive */
@media (max-width: 768px) {
  .timeline {
    padding-left: 20px;
  }

  .timeline-content p {
    text-align: center;
    padding: 0 10px;
  }

  .timeline-item::before {
    left: -10px;
  }

  .hero-name {
    font-size: 2rem;
  }

  .hero-title {
    font-size: 1rem;
  }

  .btn-glow {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}
/* Internship timeline styling */
#Internships .timeline {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 1rem;
}

#Internships .timeline-item {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: 1.5rem;
  background-color: var(--card-bg, rgba(255, 255, 255, 0.05));
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#Internships .timeline-date {
  flex-shrink: 0;
  width: 130px;
  font-weight: bold;
  color: var(--accent, #60a5fa);
}

#Internships .timeline-content h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--text-color, #ffffff);
}

#Internships .timeline-content p {
  margin: 0;
  color: var(--text-color, #ffffff);
}
#Internships h2 {
  text-align: center;
}
.chart-container {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
  margin-top: 30px;
}
.chart-box {
  background: rgba(255, 255, 255, 0.05);
  border: 2px solid var(--accent-color);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 0 15px rgba(96, 165, 250, 0.3);
  transition: 0.3s ease;
}
.chart-box:hover {
  transform: scale(1.03);
  box-shadow: 0 0 25px var(--highlight);
}
.chart-box h3 {
  margin-bottom: 15px;
  color: var(--section-heading);
}
.chart-total {
  margin-top: 12px;
  font-weight: 600;
  color: var(--section-heading);
  font-size: 0.95rem;
}