/* Reset / base */
*,
*::before,
*::after {
  box-sizing: border-box;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Root variables for runtime use */
:root {
  --bg-0: #0f1724;
  --bg-1: #111827;
  --surface: #0b1220;
  --text: #e6eef8;
  --muted: #bfcade;
  --accent: #7b61ff;
  --accent-2: #b693ff;
  --glass: rgba(255, 255, 255, 0.03);
  --ease: cubic-bezier(0.2, 0.9, 0.3, 1);
  --t-fast: 180ms;
  --t-med: 360ms;
}

/* Page */
body {
  background: var(--bg-0);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

/* Header override (Bootstrap defaults are light; make dark) */
header.navbar {
  background: linear-gradient(90deg, #1a1a2e, #2f2d5e, #4f4d8a, #6a67a9, #4f4d8a, #2f2d5e, #1a1a2e);
  background-size: 400% 400%; /* bigger background so it flows */
  animation: gradientShift 20s ease infinite;
  color: #fff;
  position: relative;
  z-index: 10;
  padding: 2rem 1rem; /* extra breathing space */
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}
.navbar-brand {
  color: var(--muted);
  transition: color var(--t-fast) var(--ease);
}
.navbar-brand:hover {
  color: var(--text);
}

.navbar-nav .nav-link {
  color: var(--muted);
  transition: color var(--t-fast) var(--ease);
}
.navbar-nav .nav-link:hover {
  color: var(--text);
}

/* Cards */
.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: 0 6px 18px rgba(2, 6, 23, 0.45);
  color: var(--text);
}

/* Links, buttons, accent styles */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

a:hover {
  color: var(--accent-2);
  text-decoration: underline;
}

/* Buttons */
.btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(123, 97, 255, 0.12);
}

.btn-outline-primary {
  border-color: rgba(123, 97, 255, 0.18);
  color: var(--accent);
}

/* Accent glow for interactive focus */
:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(123, 97, 255, 0.12);
  border-radius: 6px;
}

/* Footer */
footer {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent);
  border: 1px solid rgba(255, 255, 255, 0.04);
  box-shadow: 0 6px 18px rgba(2, 6, 23, 0.45);
  color: var(--text);
}

/* Utility: subtle glass surfaces */
.surface {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0.01));
  border: 1px solid rgba(255, 255, 255, 0.03);
  padding: 1rem;
  border-radius: 0.75rem;
}

/* Text scale */
.lead {
  font-size: clamp(1.05rem, 1rem + 0.5vw, 1.15rem);
  color: var(--text);
}

/* ANIMATIONS */
/* fade-in-up (used for elements on scroll) */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.998);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
/* small entrance fade (less movement for micro elements) */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
[data-animate] {
  opacity: 0;
  transform: translateY(12px);
  will-change: transform, opacity;
}

[data-animate].in-view {
  animation: fadeInUp var(--t-med) var(--ease) both;
}

/* Stagger helper (set data-stagger on container children) */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(10px);
}

[data-stagger] > *.in-view {
  animation: fadeInUp var(--t-med) var(--ease) both;
  animation-delay: calc(var(--stagger-index, 0) * 90ms);
}

/* small utility fade */
.fade {
  animation: fadeIn 400ms var(--ease) both;
}

/* Blog meta (date, author) */
.post-meta,
.post-meta a,
.post-meta .text-muted {
  color: #f1f1f1 !important; /* light text */
  font-size: 0.9rem;
  opacity: 0.85; /* slightly softer than pure white */
}