/* ---------- BASIC RESET ---------- */

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0a0a0c; /* deep dark grey */
  color: #e5e7eb; /* soft white-grey */
  line-height: 1.6;
}

/* ---------- HEADER ---------- */

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 40px;
  background: #0f0f12; 
  border-bottom: 1px solid #1f1f25;
  position: sticky;
  top: 0;
  z-index: 50;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

nav a {
  margin-left: 22px;
  color: #a1a1aa;
  text-decoration: none;
  font-size: 0.95rem;
  transition: 0.2s;
}
nav a:hover {
  color: #ffffff;
}

/* ---------- HERO SECTION ---------- */

.hero {
  text-align: center;
  padding: 90px 20px 60px;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.15rem;
  opacity: 0.85;
}

/* ---------- PROJECTS SECTION ---------- */

.projects {
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 20px 50px;
}

.projects h2 {
  text-align: center;
  margin-bottom: 30px;
  font-size: 1.8rem;
}

/* ---------- CARD COMPONENT ---------- */

.card {
  background: #111114;
  border: 1px solid #25252d;
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 20px;
  transition: 0.2s ease-out;
}

.card:hover {
  border-color: #3b3b45;
  transform: translateY(-2px);
}

.card h3,
.card h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.3rem;
  color: #ffffff;
}

.card p {
  font-size: 0.97rem;
  opacity: 0.85;
}

/* ---------- BUTTON ---------- */

.btn {
  display: inline-block;
  margin-top: 12px;
  padding: 9px 18px;
  background: #4f46e5; /* indigo */
  color: white;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.9rem;
  transition: 0.2s;
}

.btn:hover {
  background: #4338ca;
}

/* Secondary button */

.btn.secondary {
  background: #1a1a1f;
  border: 1px solid #32323a;
  color: #d1d1d5;
}

.btn.secondary:hover {
  background: #222229;
  border-color: #464655;
}

/* ---------- PAGE LAYOUT ---------- */

.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 20px 60px;
}

.page h1 {
  margin-bottom: 18px;
  font-size: 2rem;
}

.page h2 {
  margin-top: 28px;
  margin-bottom: 10px;
  font-size: 1.3rem;
}

.page p {
  margin: 6px 0 12px;
  font-size: 1rem;
  opacity: 0.9;
}

.page ul {
  padding-left: 22px;
}
.page ul li {
  margin-bottom: 6px;
}

/* ---------- FOOTER ---------- */

footer {
  margin-top: 50px;
  text-align: center;
  padding: 25px;
  opacity: 0.6;
  font-size: 0.85rem;
  border-top: 1px solid #1f1f25;
  background: #0f0f12;
}

/* ---------- MOBILE RESPONSIVE ---------- */

@media (max-width: 700px) {
  header {
    padding: 16px 22px;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  nav a {
    margin-left: 14px;
    font-size: 0.9rem;
  }

  .card {
    padding: 16px;
  }
}