/* Root Theme Variables */
:root {
  --bg: #e6f0ff;            /* Cool blue background */
  --text: #0a0a0a;          /* Dark text */
  --primary: #007bff;       /* Rich blue for buttons and accents */
  --card: #ffffff;          /* White content cards */
  --shadow: rgba(0, 0, 0, 0.08);
}

[data-theme="dark"] {
  --bg: #0d1117;            /* Dark GitHub-style background */
  --text: #e6edf3;          /* Light text */
  --primary: #90caf9;       /* Soft blue accent */
  --card: #161b22;
  --shadow: rgba(255, 255, 255, 0.06);
}

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

body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background 0.3s, color 0.3s;
}

.navbar {
  background-color: var(--card);
  color: var(--text);
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px var(--shadow);
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-links a {
  background-color: var(--primary);
  color: #fff;
  font-weight: bold;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  transition: background-color 0.3s, transform 0.2s;
  box-shadow: 0 2px 4px var(--shadow);
}

.nav-links a:hover,
.nav-links a.active {
  background-color: #0056b3;
  transform: translateY(-2px);
}

#theme-toggle {
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  margin-left: 0.5rem;
}

.btn {
  background-color: var(--primary);
  color: #fff;
  padding: 0.7rem 1.5rem;
  border-radius: 8px;
  font-weight: bold;
  text-decoration: none;
  display: inline-block;
  transition: background-color 0.3s;
}

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

.home-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4rem 1rem;
  flex-direction: column;
  text-align: center;
}

.hero-image img {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  border: 4px solid var(--primary);
  margin-bottom: 1rem;
}

.hero-text h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.hero-text p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 1.5rem auto;
}

.skills-section {
  padding: 2rem 1rem;
  text-align: center;
}

.skills-section h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.skills-grid span {
  background-color: var(--card);
  padding: 0.6rem 1rem;
  border-radius: 20px;
  font-weight: 500;
  box-shadow: 0 2px 5px var(--shadow);
}

footer {
  text-align: center;
  padding: 1rem;
  background-color: var(--card);
  margin-top: 2rem;
  color: var(--text);
  box-shadow: 0 -2px 8px var(--shadow);
}