:root {
  --gray-dark: #000000;
  --gray-mid: #1c1c1c;
  --gray-light: #f2f2f2;
  --neon-blue: #00eaff;
  --neon-green: #39ff14;
  --accent: var(--neon-blue);
}

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

body {
  font-family: "Inter", sans-serif;
  background: var(--gray-dark);
  color: var(--gray-light);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- Navbar ---------- */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 3rem;
  background: rgba(17, 17, 17, 0.95);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(6px);
}

.logo {
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--gray-light);
}

.logo span {
  color: var(--accent);
  text-shadow: 0 0 5px var(--accent);
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav a {
  color: var(--gray-light);
  text-decoration: none;
  transition: all 0.3s;
  font-weight: 500;
  position: relative;
}

nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  transition: width 0.3s;
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

/* ---------- Hero ---------- */
.hero {
  height: 90vh;
  background: linear-gradient(to bottom right, #181818, #1f1f1f);
  background-attachment: fixed;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-content {
  opacity: 0;
  transform: translateY(40px);
  animation: fadeUp 1s forwards 0.4s;
}

.hero h1 {
  font-size: 3.2rem;
  color: var(--gray-light);
  line-height: 1.3;
  text-shadow: 0 0 10px rgba(0, 234, 255, 0.3);
}

.hero p {
  font-size: 1.2rem;
  margin: 1.2rem 0;
  color: #ccc;
}

.btn {
  padding: 0.8rem 1.8rem;
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  position: relative;
  transition: all 0.4s ease;
}

.btn::before {
  content: "";
  position: absolute;
  top: 0;
  left: -20%;
  width: 140%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  transform: skewX(-20deg);
  opacity: 0;
  transition: opacity 0.4s;
}

.btn:hover::before {
  opacity: 0.4;
}

.btn:hover {
  background: var(--accent);
  color: #000;
  box-shadow: 0 0 10px var(--accent), 0 0 30px var(--accent);
}

/* ---------- Sections ---------- */
.page-header {
  text-align: center;
  padding: 6rem 2rem 2rem;
  background: #141414;
  border-bottom: 2px solid var(--accent);
}

.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  padding: 3rem 2rem;
}

.feature {
  background: #1f1f1f;
  padding: 2rem;
  margin: 1rem;
  border-radius: 8px;
  flex: 1 1 280px;
  border-left: 3px solid var(--accent);
  transition: transform 0.3s, box-shadow 0.3s;
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 0 20px rgba(0, 234, 255, 0.2);
}

.content {
  max-width: 900px;
  margin: 2rem auto;
  padding: 0 1.5rem 4rem;
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s ease;
}

/* ---------- Portfolio Grid ---------- */
.portfolio-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.portfolio-item {
  background: #1b1b1b;
  padding: 1.5rem;
  border-radius: 8px;
  width: 280px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.portfolio-item:hover {
  transform: scale(1.05);
  box-shadow: 0 0 25px rgba(0, 234, 255, 0.3);
}

.portfolio-item img {
  width: 100%;
  border-radius: 6px;
  margin-bottom: 1rem;
}

/* ---------- Contact ---------- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-form input,
.contact-form textarea {
  background: #222;
  border: 1px solid #333;
  color: var(--gray-light);
  padding: 0.8rem;
  border-radius: 4px;
  outline: none;
  transition: border 0.3s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border: 1px solid var(--accent);
  box-shadow: 0 0 5px var(--accent);
}

/* ---------- Footer ---------- */
footer {
  text-align: center;
  padding: 2rem;
  background: #0c0c0c;
  font-size: 0.9rem;
  color: #aaa;
  border-top: 1px solid #222;
}

/* ---------- Scroll Animations ---------- */
.fade-in {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

/* ---------- Keyframes ---------- */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  nav ul {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .features {
    flex-direction: column;
    align-items: center;
  }
}