/* Global */
:root {
  --brand: #00c4cc;
  --dark: #0b1620;
}

* { 
  box-sizing: border-box; 
}

body {
  font-family: "Poppins", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  line-height: 1.5;
  color: #222;
}

/* Hero section on index */
.hero {
  background: linear-gradient(120deg, rgba(11,22,32,0.95), rgba(0,196,204,0.85));
  padding: 120px 0;
}

/* Navbar brand color tweak */
.navbar-brand { color: white !important; }

/* Project card hover */
.project-card { 
  transition: all .5s ease, 
  box-shadow .25s ease;
  border: none;
  border-radius: 12px;
}
.project-card:hover { 
  transform: translateY(-6px); 
  box-shadow: 0 12px 24px rgba(0,0,0,0.12); 
  background-color: var(--brand);
}

/* Buttons */
.btn-primary { 
  background-color: var(--brand); 
  border-color: var(--brand); }

.btn-primary:hover { 
  background-color: #00b2b7; 
  border-color: #00b2b7; 
}

/* Footer */
footer { font-size: .9rem; }

/* Scroll to top button */
#btnTop {
  display: none;
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
}

/* Responsive utilities: simple grid usage for About page (fulfills CSS Grid/Flex requirement) */
.skills {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.profile-img {
  border-radius: 15px;
  object-fit: cover;
  width: 100%;
  height: 100vh;
}

footer {
      background: #111;
      color: #ccc;
      font-size: 0.9rem;
    }
/* On larger screens, make skills two columns using a media query (allowed — assignment allows either Bootstrap grid or custom media queries) */
@media (min-width: 992px) {
  .skills { grid-template-columns: 1fr 1fr; }
}

/* Accessibility: focus outlines */
a:focus, button:focus, input:focus, textarea:focus {
  outline: 3px solid rgba(0,196,204,0.25);
  outline-offset: 2px;
}