@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Poppins:wght@300;400;600&display=swap');

:root {
  --bg-dark: #0d0d0d;
  --card-dark: #1a1a1a;
  --accent: #00ff9f;
  --text-light: #e6e6e6;
  --muted: #999;
  --transition: 0.3s ease;
  --shadow: rgba(0, 255, 159, 0.3);
}

body.light {
  --bg-dark: #f5f5f5;
  --card-dark: #ffffff;
  --text-light: #111;
  --muted: #444;
  --accent: #0077ff;
  --shadow: #0077ff;
  background: radial-gradient(circle at center, #ffffff, #ddd);
}

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

body {
  background: radial-gradient(circle at center, #0d0d0d, #000);
  font-family: 'Poppins', sans-serif;
  color: var(--text-light);
  scroll-behavior: smooth;
}

/* ===== NAVBAR ===== */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 4rem;
  background: rgba(20, 20, 20, 0.9);
  box-shadow: 0 0 20px rgba(0, 255, 159, 0.1);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.logo {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  color: var(--accent);
  letter-spacing: 2px;
  text-shadow: 0 0 10px var(--accent);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.theme-toggle {
  background-color: rgba(20, 20, 20, 0.9);
  background: none;
  color: inherit;
  border: none;
  padding: 0;
  font: inherit;
  cursor: pointer;
  outline: none;
}

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

.nav-links a {
  text-decoration: none;
  color: #e6e6e6;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--accent);
}

.nav-links a:hover::after {
  width: 100%;
}

/* ===== HERO SECTION ===== */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding-top: 6rem;
}

.hero h1 {
  font-size: 3rem;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 2px;
}

.hero h1 span {
  color: var(--accent);
  text-shadow: 0 0 15px var(--accent);
}

.hero p {
  margin-top: 1rem;
  font-size: 1.2rem;
  color: var(--muted);
}

.hero-buttons {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
}

.hero-buttons a {
  text-decoration: none;
  padding: 0.8rem 1.5rem;
  border: 2px solid var(--accent);
  color: var(--accent);
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 1px;
  transition: var(--transition);
}

.hero-buttons a:hover {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 20px var(--accent);
}

/* ===== ABOUT SECTION ===== */
.about {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5rem 10%;
  gap: 3rem;
  background: var(--card-dark);
  border-top: 1px solid rgba(255,255,255,0.05);
}

.about img {
  width: 300px;
  border-radius: 50%;
  box-shadow: 0 0 30px var(--shadow);
  object-fit: cover;
}

.about-text h2 {
  color: var(--accent);
  font-family: 'Orbitron', sans-serif;
  margin-bottom: 1rem;
}

.about-text p {
  line-height: 1.6;
  color: var(--muted);
}

/* ===== PROJECTS ===== */
.projects {
  padding: 5rem 10%;
  background: #111;
  text-align: center;
}

.projects h2 {
  color: var(--accent);
  font-family: 'Orbitron', sans-serif;
  margin-bottom: 2rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.project-card {
  background: var(--card-dark);
  padding: 1.5rem;
  border-radius: 15px;
  box-shadow: 0 0 20px rgba(0, 255, 159, 0.1);
  transition: var(--transition);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 25px rgba(0, 255, 159, 0.3);
}

.project-card img {
  width: 100%;
  border-radius: 10px;
  margin-bottom: 1rem;
}

.project-card h3 {
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.project-card p {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.project-links a {
  display: inline-block;
  margin: 0 0.5rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 8px;
  text-decoration: none;
  color: var(--accent);
  font-weight: 600;
  transition: var(--transition);
}

.project-links a:hover {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 15px var(--accent);
}

/* ===== CONTACT ===== */
.contact {
  padding: 5rem 10%;
  background: var(--card-dark);
  text-align: center;
}

.contact h2 {
  color: var(--accent);
  font-family: 'Orbitron', sans-serif;
  margin-bottom: 1rem;
}

.contact p {
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.contact ul {
  list-style: none;
  line-height: 2;
}

.contact a {
  color: var(--accent);
  text-decoration: none;
  transition: var(--transition);
}

.contact a:hover {
  text-shadow: 0 0 10px var(--accent);
}

/* ===== FOOTER ===== */
footer {
  background: #0a0a0a;
  text-align: center;
  padding: 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

footer a {
  color: var(--accent);
  text-decoration: none;
}

footer a:hover {
  text-shadow: 0 0 8px var(--accent);
}