:root {
  --hue: 255;
  --first-color: hsl(var(--hue), 60%, 64%);
  --first-color-alt: hsl(var(--hue), 80%, 56%);
  --first-color-light: hsl(var(--hue), 60%, 74%);
  --title-color: hsl(240, 8%, 95%);
  --text-color: hsl(240, 8%, 70%);
  --text-color-light: hsl(240, 8%, 50%);
  --body-color: hsl(240, 100%, 2%);
  --container-color: hsl(240, 8%, 6%);
  --border-color: hsl(240, 8%, 12%);
  --body-font: "Montserrat", sans-serif;
  --second-font: "Unbounded", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--body-font);
  background-color: var(--body-color);
  color: var(--text-color);
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { display: block; max-width: 100%; }

/* Noise texture overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  background: linear-gradient(to right, var(--first-color), var(--first-color-light));
  z-index: 200;
  width: 0%;
  transition: width .1s;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(16px);
  background: hsla(240, 100%, 2%, 0.7);
  border-bottom: 1px solid var(--border-color);
}

.header__logo {
  font-family: var(--second-font);
  font-size: .85rem;
  font-weight: 600;
  color: var(--first-color);
  letter-spacing: 0.05em;
}

.header__nav {
  display: flex;
  gap: 2rem;
}

.header__nav a {
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-color);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color .3s;
}

.header__nav a:hover { color: var(--first-color); }

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-color);
  letter-spacing: 0.05em;
  transition: color .3s;
}

.back-btn:hover { color: var(--first-color); }
.back-btn i { font-size: 1rem; }

/* ===== MAIN WRAPPER ===== */
.post-wrapper {
  max-width: 780px;
  margin: 0 auto;
  padding: 9rem 2rem 6rem;
  position: relative;
}

/* ===== AMBIENT GLOW ===== */
.ambient-glow {
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, hsla(var(--hue), 60%, 64%, 0.06), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-color-light);
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp .7s .1s forwards;
}

.breadcrumb a { transition: color .3s; }
.breadcrumb a:hover { color: var(--first-color); }
.breadcrumb i { font-size: .7rem; }

/* ===== ENTRY META ROW ===== */
.post-meta-row {
  display: flex;
  align-items: center;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: 1.75rem;
  opacity: 0;
  animation: fadeUp .7s .2s forwards;
}

.entry-date {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-color-light);
}

.entry-badge {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  padding: .28rem .8rem;
  border-radius: 100px;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: hsla(140, 60%, 55%, 0.15);
  color: hsl(140, 60%, 65%);
  border: 1px solid hsla(140, 60%, 55%, 0.3);
}

.entry-badge--milestone {
  background: hsla(var(--hue), 60%, 64%, 0.15);
  color: var(--first-color);
  border: 1px solid hsla(var(--hue), 60%, 64%, 0.3);
}

.read-time {
  font-size: .72rem;
  letter-spacing: 0.06em;
  color: var(--text-color-light);
  display: flex;
  align-items: center;
  gap: .3rem;
}

/* ===== POST TITLE ===== */
.post-title {
  font-family: var(--second-font);
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  color: var(--title-color);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  opacity: 0;
  animation: fadeUp .8s .3s forwards;
}

.post-title .highlight {
  color: transparent;
  -webkit-text-stroke: 1px var(--first-color);
}

/* ===== LEAD / INTRO ===== */
.post-lead {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-color);
  border-left: 2px solid var(--first-color);
  padding-left: 1.25rem;
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp .8s .4s forwards;
}

/* ===== HERO IMAGE ===== */
.post-hero-img {
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  margin-bottom: 3.5rem;
  position: relative;
  opacity: 0;
  animation: fadeUp .8s .5s forwards;
}

.post-hero-img img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  display: block;
}

.post-hero-img .img-caption {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: .75rem 1.25rem;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  font-size: .72rem;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.6);
}

/* ===== POST BODY ===== */
.post-body {
  opacity: 0;
  animation: fadeUp .8s .55s forwards;
}

.post-body h2 {
  font-family: var(--second-font);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--title-color);
  margin: 2.5rem 0 1rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: .6rem;
}

.post-body h2::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1em;
  border-radius: 2px;
  background: var(--first-color);
  flex-shrink: 0;
}

.post-body p {
  font-size: .92rem;
  line-height: 1.9;
  color: var(--text-color);
  margin-bottom: 1.25rem;
}

/* ===== CALLOUT / HIGHLIGHT BOX ===== */
.callout {
  background: linear-gradient(135deg, hsl(var(--hue), 20%, 8%), var(--container-color));
  border: 1px solid hsla(var(--hue), 60%, 64%, 0.2);
  border-left: 3px solid var(--first-color);
  border-radius: 12px;
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  position: relative;
}

.callout__icon {
  font-size: 1.1rem;
  color: var(--first-color);
  margin-bottom: .5rem;
}

.callout p {
  font-size: .88rem;
  line-height: 1.75;
  color: var(--text-color);
  margin-bottom: 0;
}

/* ===== SKILL GRID ===== */
.skill-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  margin: 1.75rem 0;
}

.skill-item {
  background: var(--container-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  transition: border-color .3s, transform .3s;
}

.skill-item:hover {
  border-color: var(--first-color);
  transform: translateY(-3px);
}

.skill-item__icon {
  font-size: 1.3rem;
  color: var(--first-color);
  margin-bottom: .5rem;
}

.skill-item__name {
  font-family: var(--second-font);
  font-size: .65rem;
  font-weight: 700;
  color: var(--title-color);
  letter-spacing: 0.04em;
  margin-bottom: .2rem;
}

.skill-item__desc {
  font-size: .7rem;
  color: var(--text-color-light);
  line-height: 1.5;
}

/* ===== PROGRESS BARS ===== */
.progress-section {
  background: var(--container-color);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.75rem;
  margin: 2rem 0;
}

.progress-section h3 {
  font-family: var(--second-font);
  font-size: .75rem;
  font-weight: 700;
  color: var(--title-color);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.progress-item {
  margin-bottom: 1.1rem;
}

.progress-item:last-child { margin-bottom: 0; }

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: .4rem;
  font-size: .75rem;
  font-weight: 500;
  color: var(--text-color);
}

.progress-track {
  height: 4px;
  background: var(--border-color);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(to right, var(--first-color), var(--first-color-light));
  width: 0%;
  transition: width 1.4s cubic-bezier(.16, 1, .3, 1);
}

/* ===== TAGS ===== */
.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.tag {
  font-size: .68rem;
  font-weight: 500;
  color: var(--text-color-light);
  padding: .3rem .85rem;
  border: 1px solid var(--border-color);
  border-radius: 100px;
  transition: all .3s;
  cursor: pointer;
}

.tag:hover {
  border-color: var(--first-color);
  color: var(--first-color);
}

/* ===== RELATED ENTRIES ===== */
.related-section {
  margin-top: 5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-color);
  opacity: 0;
  animation: fadeUp .8s .7s forwards;
}

.related-label {
  font-family: var(--second-font);
  font-size: .65rem;
  font-weight: 700;
  color: var(--first-color);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.related-label::before { content: '✦'; font-size: .55rem; }

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.25rem;
}

.related-card {
  background: var(--container-color);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 1.5rem;
  transition: border-color .3s, transform .3s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.related-card:hover {
  border-color: var(--first-color);
  transform: translateY(-4px);
}

.related-card__meta {
  display: flex;
  align-items: center;
  gap: .6rem;
  margin-bottom: .85rem;
}

.related-card__date {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-color-light);
}

.related-badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .65rem;
  border-radius: 100px;
  font-size: .6rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.badge--life-sm {
  background: hsla(140, 60%, 55%, 0.12);
  color: hsl(140, 60%, 65%);
  border: 1px solid hsla(140, 60%, 55%, 0.25);
}

.badge--milestone-sm {
  background: hsla(var(--hue), 60%, 64%, 0.12);
  color: var(--first-color);
  border: 1px solid hsla(var(--hue), 60%, 64%, 0.25);
}

.related-card__title {
  font-family: var(--second-font);
  font-size: .82rem;
  font-weight: 700;
  color: var(--title-color);
  line-height: 1.35;
}

/* ===== SCROLL TOP ===== */
.scroll-top {
  position: fixed;
  bottom: 2rem; right: 2rem;
  width: 3rem; height: 3rem;
  border-radius: 50%;
  background: var(--first-color);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  cursor: pointer;
  border: none;
  opacity: 0;
  transform: translateY(20px);
  transition: all .3s;
  z-index: 50;
}

.scroll-top.show { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: var(--first-color-alt); }

/* ===== ANIMATIONS ===== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .header__nav { display: none; }
  .post-hero-img img { height: 240px; }
  .skill-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  .skill-grid { grid-template-columns: 1fr; }
  .post-title { font-size: 1.65rem; }
}