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

/* VARIABLES TECH */
:root {
  --bg: #0b0f14;
  --card: #121826;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --accent: #22d3ee; /* cyan tech */
}

/* BODY */
body {
  font-family: 'Inter', system-ui, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* HEADER */
header {
  padding: 120px 20px;
  text-align: center;
  background:
    radial-gradient(circle at top, rgba(34, 211, 238, 0.15), transparent 60%),
    var(--bg);
}

header h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -1px;
}

header h1::after {
  content: "_";
  color: var(--accent);
  animation: blink 1s infinite;
}

header p {
  margin-top: 15px;
  font-size: 1.2rem;
  color: var(--muted);
}

/* MAIN */
main {
  max-width: 1100px;
  margin: auto;
  padding: 80px 20px;
}

/* SECTIONS */
section {
  margin-bottom: 90px;
}

section h2 {
  font-size: 2rem;
  margin-bottom: 25px;
  position: relative;
}

section h2::before {
  content: ">";
  color: var(--accent);
  margin-right: 10px;
}

/* TEXT */
p {
  max-width: 750px;
  margin-bottom: 15px;
  color: var(--text);
}

ul {
  margin-left: 20px;
  margin-bottom: 20px;
}

ul li {
  margin-bottom: 8px;
  color: var(--muted);
}

/* PROJECT CARD */
article {
  background-color: var(--card);
  border: 1px solid rgba(34, 211, 238, 0.15);
  border-radius: 14px;
  padding: 35px;
  box-shadow: 0 0 0 rgba(34, 211, 238, 0);
  transition: all 0.3s ease;
}

article:hover {
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.15);
  transform: translateY(-4px);
}

article h3 {
  font-size: 1.6rem;
  margin-bottom: 15px;
  color: var(--accent);
}

/* LINKS */
a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
}

a:hover {
  text-decoration: underline;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 50px 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--muted);
  font-size: 0.9rem;
}

/* CURSOR EFFECT */
@keyframes blink {
  0%, 50%, 100% {
    opacity: 1;
  }
  25%, 75% {
    opacity: 0;
  }
}

/* RESPONSIVE */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.2rem;
  }

  section h2 {
    font-size: 1.6rem;
  }
}