/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
  scroll-behavior: smooth;
}

body {
  background: #f5f5f5;
  color: #333;
  transition: background 0.3s, color 0.3s;
}

a {
  text-decoration: none;
  color: inherit;
}

h1, h2, h3 {
  font-weight: 600;
}

/* Navbar */
header {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  z-index: 100;
}

nav {
  max-width: 1200px;
  margin: auto;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

nav h1 {
  font-size: 1.8rem;
  color: #007BFF;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav ul li a {
  font-weight: 500;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #007BFF;
}

#modeToggle {
  border: none;
  background: #007BFF;
  color: white;
  padding: 0.5rem 0.8rem;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.3s;
}

#modeToggle:hover {
  background: #0056b3;
}

/* Hero */
.hero {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 6rem auto 2rem;
  padding: 2rem;
  flex-wrap: wrap;
}

.hero-text {
  flex: 1;
  min-width: 280px;
}

.hero-text h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero-text span {
  color: #007BFF;
}

.hero-text p {
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.7rem 1.5rem;
  background: #007BFF;
  color: white;
  border-radius: 30px;
  transition: background 0.3s;
}

.btn:hover {
  background: #0056b3;
}

.hero-img img {
  max-width: 300px;
  border-radius: 50%;
  border: 5px solid #007BFF;
  transition: transform 0.3s;
}

.hero-img img:hover {
  transform: scale(1.05);
}

/* Sections */
.section {
  max-width: 1200px;
  margin: 3rem auto;
  padding: 2rem;
  text-align: center;
}

.section h2 {
  font-size: 2rem;
  margin-bottom: 2rem;
  color: #007BFF;
}

.skills-container, .education-container, .project-container {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* Cards */
.skill-card, .education-card, .project-card {
  background: white;
  border-radius: 15px;
  padding: 1rem;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s, box-shadow 0.3s;
}

.skill-card:hover, .education-card:hover, .project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.skill-card i, .project-card i, .education-card i {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: #007BFF;
}

/* Contact */
.contact p, .contact a {
  font-size: 1.1rem;
}

footer {
  background: #007BFF;
  color: white;
  text-align: center;
  padding: 1rem;
  margin-top: 2rem;
}

footer .social-links a {
  color: white;
  margin: 0 0.5rem;
  font-size: 1.5rem;
  transition: color 0.3s;
}

footer .social-links a:hover {
  color: #dbe9ff;
}

/* Dark Mode */
body.dark {
  background: #1e1e1e;
  color: #f5f5f5;
}

body.dark header {
  background: #2a2a2a;
}

body.dark .btn {
  background: #0056b3;
}

body.dark .skill-card, body.dark .education-card, body.dark .project-card {
  background: #2a2a2a;
  color: #f5f5f5;
}

body.dark footer {
  background: #0a3d91;
}