/* =============================================
   RESET & BASE
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* Dark theme (default) */
:root {
  --bg:          #0a0d14;
  --bg-dark:     #060810;
  --bg-card:     #111520;
  --bg-card2:    #141927;
  --border:      rgba(255,255,255,0.07);
  --text:        #e2e8f0;
  --text-muted:  #8892a4;
  --accent:      #4f8ef7;
  --accent2:     #7c5cbf;
  --green:       #34d399;
  --radius:      12px;
  --radius-sm:   8px;
  --font:        'Inter', system-ui, sans-serif;
  --mono:        'JetBrains Mono', 'Courier New', monospace;
  --nav-h:       64px;
  --nav-bg:      rgba(10, 13, 20, 0.88);
  --nav-mobile:  rgba(10, 13, 20, 0.97);
  --input-bg:    #0d1019;
  --link:        var(--accent);
}

/* Light theme */
[data-theme="light"] {
  --bg:          #f5f7fb;
  --bg-dark:     #ebeef5;
  --bg-card:     #ffffff;
  --bg-card2:    #f8fafd;
  --border:      rgba(0,0,0,0.09);
  --text:        #1a202c;
  --text-muted:  #64748b;
  --nav-bg:      rgba(245, 247, 251, 0.92);
  --nav-mobile:  rgba(245, 247, 251, 0.99);
  --input-bg:    #f0f3fa;
  --link:        #2f6fe0; /* darker than --accent for WCAG AA contrast on white body text */
}

html { scroll-behavior: smooth; font-size: 16px; }

/* Skip-to-content (accessibility + SEO) */
.skip-link {
  position: absolute;
  top: -48px; left: 16px;
  background: var(--accent);
  color: #fff;
  padding: 10px 20px;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 9999;
  transition: top 0.2s;
  text-decoration: none;
}
.skip-link:focus { top: 0; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background 0.3s, color 0.3s;
}

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

/* =============================================
   UTILITIES
   ============================================= */
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

.gradient-text {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 2px solid transparent;
  font-family: var(--font);
}
.btn--primary { background: linear-gradient(135deg, var(--accent), var(--accent2)); color: #fff; }
.btn--primary:hover { opacity: 0.85; transform: translateY(-2px); }
.btn--outline { border-color: var(--accent); color: var(--accent); background: transparent; }
.btn--outline:hover { background: rgba(79,142,247,0.1); transform: translateY(-2px); }

.section { padding: 96px 0; }
.section--dark { background: var(--bg-dark); }

.section__title { font-size: clamp(2rem, 4vw, 2.75rem); font-weight: 800; margin-bottom: 16px; line-height: 1.2; }
.section__sub { color: var(--text-muted); margin-bottom: 48px; font-size: 1rem; }
.section__sub a { color: var(--link); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.section__sub a:hover { border-color: var(--link); }
.section__cta { text-align: center; margin-top: 48px; }

/* =============================================
   LATEST PROJECT BANNER (opt-in via body.has-banner)
   ============================================= */
body.has-banner { --banner-h: 40px; }

.banner-latest {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--banner-h, 40px);
  z-index: 101;
  display: flex;
  align-items: stretch;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  color: #fff;
  overflow: hidden;
}
.banner-latest[hidden] { display: none; }

.banner-latest__inner {
  flex: 1 1 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 24px 0 64px; /* left padding = right (24) + close button (40) so content stays visually centred */
  justify-content: center;
  font-size: 0.86rem;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  color: #fff;
  text-decoration: none;
  transition: filter 0.2s;
}
.banner-latest__inner:hover { filter: brightness(1.08); }
.banner-latest__inner:focus-visible { outline: 2px solid #fff; outline-offset: -3px; }

.banner-latest__close {
  flex: 0 0 auto;
  width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  color: #fff;
  cursor: pointer;
  opacity: 0.75;
  transition: opacity 0.15s, background 0.15s;
  padding: 0;
}
.banner-latest__close:hover,
.banner-latest__close:focus-visible {
  opacity: 1;
  background: rgba(0, 0, 0, 0.18);
  outline: none;
}
.banner-latest__close:focus-visible { box-shadow: inset 0 0 0 2px #fff; }

.banner-latest__pulse {
  width: 9px; height: 9px;
  border-radius: 50%;
  background: #6ee7b7;
  box-shadow: 0 0 0 0 rgba(110, 231, 183, 0.7);
  animation: banner-pulse 1.8s infinite;
  flex-shrink: 0;
}

.banner-latest__label {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  padding: 3px 9px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.28);
  flex-shrink: 0;
}

.banner-latest__text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}
.banner-latest__text strong { font-weight: 700; }

.banner-latest__text-wrap {
  position: relative;
  flex: 1 1 auto;
  min-width: 0;
  max-width: min(720px, 55vw);
  height: 1.2em;
  display: flex;
  align-items: center;
  justify-content: center;
}

.banner-latest__loader {
  position: absolute;
  inset: 0;
  border-radius: 4px;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.15) 0%,
    rgba(255, 255, 255, 0.45) 50%,
    rgba(255, 255, 255, 0.15) 100%
  );
  background-size: 200% 100%;
  animation: banner-shimmer 1.2s ease-in-out infinite;
}

.banner-latest.is-ready .banner-latest__loader { display: none; }

.banner-latest__slides {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.banner-latest__slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.45s ease, transform 0.45s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  pointer-events: none;
}

.banner-latest.is-ready .banner-latest__slide.is-active {
  opacity: 1;
  transform: translateY(0);
}

.banner-latest__slide strong { font-weight: 700; }

@keyframes banner-shimmer {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (max-width: 720px) {
  .banner-latest__text-wrap { max-width: none; flex: 1 1 auto; min-height: 2.3em; height: auto; }
  .banner-latest__slide { white-space: normal; text-align: center; line-height: 1.15; }
}

.banner-latest__arrow {
  font-weight: 700;
  font-size: 1rem;
  transition: transform 0.2s;
  flex-shrink: 0;
}
.banner-latest__inner:hover .banner-latest__arrow { transform: translateX(4px); }

@keyframes banner-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(110, 231, 183, 0.7); }
  70%  { box-shadow: 0 0 0 9px rgba(110, 231, 183, 0); }
  100% { box-shadow: 0 0 0 0 rgba(110, 231, 183, 0); }
}

@media (max-width: 720px) {
  body.has-banner { --banner-h: 44px; }
  .banner-latest__inner { font-size: 0.72rem; gap: 8px; padding: 0 12px 0 44px; }
  .banner-latest__close { width: 36px; }
  .banner-latest__label { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .banner-latest__pulse { animation: none; }
  .banner-latest__loader { animation: none; opacity: 0.35; }
  .banner-latest__slide { transition: none; transform: none; }
}

/* =============================================
   NAV
   ============================================= */
.nav {
  position: fixed;
  top: var(--banner-h, 0);
  left: 0; right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav__inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav__logo {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.3rem;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
}

.nav__links {
  list-style: none;
  display: flex;
  gap: 28px;
  flex: 1;
  justify-content: center;
}
.nav__links a {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
  position: relative;
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
}
.nav__links a:hover,
.nav__links a.active { color: var(--text); }
.nav__links a:hover::after,
.nav__links a.active::after { transform: scaleX(1); }

.nav__controls {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.nav__icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--mono);
}
.nav__icon-btn:hover { border-color: var(--accent); color: var(--accent); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav__burger span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* =============================================
   HERO
   ============================================= */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + var(--banner-h, 0px) + 48px) 24px 80px;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,142,247,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,142,247,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 100%);
}

.hero__content { position: relative; z-index: 1; }

.hero__eyebrow {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 16px;
  font-family: var(--mono);
}

.hero__name {
  font-size: clamp(3rem, 9vw, 6.5rem);
  font-weight: 800;
  line-height: 1.0;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero__title {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-muted);
  margin-bottom: 20px;
  font-family: var(--mono);
  min-height: 2em;
}

.typed::after { content: '|'; animation: blink 1s step-end infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }

.hero__location {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.hero__badges { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 36px; }

.badge { font-size: 0.78rem; font-weight: 600; padding: 5px 14px; border-radius: 100px; letter-spacing: 0.03em; }
.badge--blue   { background: rgba(79,142,247,0.15); color: #7eb3ff; border: 1px solid rgba(79,142,247,0.25); }
.badge--purple { background: rgba(124,92,191,0.15); color: #b08af7; border: 1px solid rgba(124,92,191,0.25); }
.badge--green  { background: rgba(52,211,153,0.12); color: var(--green); border: 1px solid rgba(52,211,153,0.2); }

[data-theme="light"] .badge--blue   { color: #2563eb; }
[data-theme="light"] .badge--purple { color: #7c3aed; }
[data-theme="light"] .badge--green  { color: #059669; }

.hero__cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.hero__stats {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 64px;
  position: relative;
  z-index: 1;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 36px;
  text-align: center;
  min-width: 140px;
  transition: border-color 0.2s, transform 0.2s;
}
.stat-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-4px); }
.stat-card__num {
  display: block;
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-card__label { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 500; }

.hero__scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  animation: bounce 2s ease-in-out infinite;
}
.hero__scroll-line { width: 1px; height: 40px; background: linear-gradient(to bottom, var(--text-muted), transparent); }
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(6px); }
}

/* =============================================
   ABOUT
   ============================================= */
.about__grid { display: grid; grid-template-columns: auto 1fr; gap: 64px; align-items: start; }
.about__avatar { flex-shrink: 0; }

.avatar-ring {
  width: 200px; height: 200px;
  border-radius: 50%;
  padding: 4px;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  display: flex; align-items: center; justify-content: center;
}

.avatar-inner {
  width: 100%; height: 100%;
  border-radius: 50%;
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}

.avatar-monogram {
  font-family: var(--mono);
  font-size: 3rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: absolute;
  inset: 0;
  display: flex; align-items: center; justify-content: center;
}

.avatar-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.4s;
}
.avatar-img.loaded { opacity: 1; }

.about__text p { color: var(--text-muted); margin-bottom: 16px; font-size: 1.05rem; line-height: 1.75; }
.about__text p strong { color: var(--text); }
.about__text p a { color: var(--link); border-bottom: 1px solid rgba(79,142,247,0.35); transition: border-color 0.2s; }
.about__text p a:hover { border-color: var(--link); }

.about__links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 24px; }

.chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.85rem; font-weight: 500;
  color: var(--text-muted);
  transition: all 0.2s;
}
.chip:hover { border-color: var(--accent); color: var(--accent); background: rgba(79,142,247,0.08); }

/* =============================================
   EXPERIENCE & CREDENTIALS
   ============================================= */
.exp__layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  opacity: 0.3;
}

.timeline__item { position: relative; margin-bottom: 36px; }
.timeline__item:last-child { margin-bottom: 0; }

.timeline__dot {
  position: absolute;
  left: -24px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-dark);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.2);
}

.timeline__card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.timeline__card:hover { border-color: rgba(79,142,247,0.3); transform: translateX(4px); }

.timeline__period {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
  background: rgba(79,142,247,0.1);
  padding: 2px 10px;
  border-radius: 4px;
}

.timeline__role { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.timeline__company { font-size: 0.85rem; color: var(--text-muted); font-weight: 500; margin-bottom: 10px; }
.timeline__desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.7; }
.timeline__card .tags { margin-top: 12px; }

/* Certifications */
.certs { display: flex; flex-direction: column; gap: 14px; }

.certs__heading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}
.cert-card:hover { border-color: rgba(79,142,247,0.25); transform: translateX(3px); }

.cert-card__icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.cert-card__icon svg { width: 22px; height: 22px; }
.cert-card__icon--edu { background: rgba(79,142,247,0.12); border: 1px solid rgba(79,142,247,0.2); color: var(--accent); }
.cert-card__icon--ms  { background: rgba(255,255,255,0.06); border: 1px solid var(--border); }

.cert-card__title { font-size: 0.9rem; font-weight: 700; color: var(--text); }
.cert-card__body  { font-size: 0.78rem; color: var(--text-muted); margin-top: 2px; }

/* =============================================
   HOBBIES
   ============================================= */
.hobbies__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

.hobby-card--featured {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: start;
  gap: 24px 32px;
  background: linear-gradient(135deg, rgba(79,142,247,0.08) 0%, rgba(124,92,191,0.08) 100%);
  border-color: rgba(79,142,247,0.2);
}

.hobby-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.2s, transform 0.2s;
}
.hobby-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-3px); }

.hobby-card__icon-wrap {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: rgba(79,142,247,0.12);
  border: 1px solid rgba(79,142,247,0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.hobby-card__icon { width: 28px; height: 28px; color: var(--accent); }
.hobby-card__body { flex: 1; }
.hobby-card__title { font-size: 1.05rem; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.hobby-card__desc { font-size: 0.9rem; color: var(--text-muted); line-height: 1.7; }
.hobby-card__desc strong { color: var(--text); }
.hobby-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.hobby-card__tag {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.75rem; font-weight: 700;
  font-family: var(--mono);
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(79,142,247,0.12);
  border: 1px solid rgba(79,142,247,0.25);
  color: var(--accent);
  letter-spacing: 0.04em;
}
.hobby-card__tags .hobby-card__tag { margin-top: 0; }
.hobby-card__tag--link { text-decoration: none; transition: all 0.2s; }
.hobby-card__tag--link:hover { background: rgba(79,142,247,0.22); border-color: rgba(79,142,247,0.45); }
.hobby-card__desc a { color: var(--link); text-decoration: none; border-bottom: 1px dashed rgba(79,142,247,0.4); }
.hobby-card__desc a:hover { border-bottom-color: var(--link); }

.hobby-card__gallery {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.hobby-card__photo picture {
  display: block;
  width: 100%;
  height: 100%;
}
.hobby-card__photo {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  margin: 0;
  font: inherit;
  color: inherit;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  background: var(--bg-card);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}
.hobby-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}
.hobby-card__photo:hover {
  transform: translateY(-2px);
  border-color: rgba(79,142,247,0.45);
  box-shadow: 0 8px 22px rgba(79,142,247,0.18);
}
.hobby-card__photo:hover img { transform: scale(1.06); }
@media (max-width: 720px) {
  .hobby-card__gallery { grid-template-columns: repeat(2, 1fr); }
}

.lightbox__caption {
  color: #e5e9f5;
  font-size: 0.92rem;
  text-align: center;
  max-width: 90%;
  line-height: 1.4;
  margin: 10px auto 0;
}
.lightbox__counter {
  color: rgba(229, 233, 245, 0.7);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: center;
  margin-top: 4px;
}
.lightbox__thumbs {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  max-width: 92vw;
  overflow-x: auto;
  z-index: 2;
}
.lightbox__thumb {
  width: 60px;
  height: 46px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  background: #0b1020;
  flex: 0 0 auto;
  opacity: 0.55;
  transition: opacity 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.lightbox__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.lightbox__thumb:hover { opacity: 0.9; }
.lightbox__thumb.is-active {
  opacity: 1;
  border-color: var(--accent, #4f8ef7);
  transform: translateY(-2px);
}
.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: #fff;
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background 0.2s ease;
  z-index: 2;
}
.lightbox__nav:hover { background: rgba(255,255,255,0.16); }
.lightbox__nav--prev { left: 18px; }
.lightbox__nav--next { right: 18px; }
@media (max-width: 600px) {
  .lightbox__nav { width: 40px; height: 40px; font-size: 1.3rem; }
  .lightbox__nav--prev { left: 8px; }
  .lightbox__nav--next { right: 8px; }
}

/* =============================================
   SKILLS
   ============================================= */
.skills__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}
.skill-group:hover { border-color: rgba(79,142,247,0.25); transform: translateY(-3px); }

.skill-group__title {
  font-size: 0.85rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.skill-group__icon { font-size: 1rem; }

.tags { display: flex; flex-wrap: wrap; gap: 8px; }

.tag {
  display: inline-block;
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 0.82rem; font-weight: 500;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.15s;
  font-family: var(--mono);
}
.tag:hover { background: rgba(79,142,247,0.1); border-color: rgba(79,142,247,0.3); color: var(--text); }
.tag--primary { background: rgba(79,142,247,0.12); border-color: rgba(79,142,247,0.25); color: #7eb3ff; }
[data-theme="light"] .tag--primary { color: #2563eb; }
[data-theme="light"] .tag { background: rgba(0,0,0,0.04); }

/* =============================================
   ARTICLES
   ============================================= */
.articles__topics { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 36px; }

.topic-pill {
  padding: 6px 18px;
  border-radius: 100px;
  font-size: 0.82rem; font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  user-select: none;
}
.topic-pill:hover,
.topic-pill--active {
  background: rgba(79,142,247,0.15);
  border-color: rgba(79,142,247,0.35);
  color: var(--accent);
}

.articles__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }

.article-card {
  background: var(--bg-card2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
  transition: all 0.2s;
}
.article-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-3px); }
.article-card.hidden { display: none; }

.article-card__tag {
  display: inline-block; width: fit-content;
  font-size: 0.72rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 3px 10px;
  border-radius: 4px;
  background: rgba(79,142,247,0.12);
  color: var(--accent);
  border: 1px solid rgba(79,142,247,0.2);
}
.article-card__meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--mono);
  display: flex; gap: 12px; flex-wrap: wrap;
}
.article-card__title { font-size: 0.97rem; font-weight: 700; color: var(--text); line-height: 1.45; }
.article-card__desc  { font-size: 0.85rem; color: var(--text-muted); line-height: 1.65; flex: 1; }

/* Skeleton loader */
@keyframes shimmer {
  0%   { background-position: -800px 0; }
  100% { background-position: 800px 0; }
}
.article-skeleton {
  height: 180px;
  border-radius: var(--radius);
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card2) 50%, var(--bg-card) 75%);
  background-size: 800px 100%;
  animation: shimmer 1.5s infinite;
  border: 1px solid var(--border);
}

/* =============================================
   CONTACT
   ============================================= */
.contact__address {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}
.contact__address a { color: var(--link); border-bottom: 1px solid rgba(79,142,247,0.3); transition: border-color 0.2s; }
.contact__address a:hover { border-color: var(--link); }

.contact__intro {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 40px;
  line-height: 1.75;
  max-width: 560px;
}

.contact__layout {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: 48px;
  align-items: start;
}

.contact__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.contact-card {
  display: flex; align-items: center; gap: 14px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.contact-card:hover { border-color: var(--accent); background: rgba(79,142,247,0.05); transform: translateY(-2px); }
.contact-card--viber .contact-card__icon { color: #7360f2; }
.contact-card--viber:hover { border-color: #7360f2; background: rgba(115,96,242,0.08); }
.contact-card__icon { width: 28px; height: 28px; color: var(--accent); flex-shrink: 0; }
.contact-card__label { display: block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--text-muted); font-weight: 600; margin-bottom: 2px; }
.contact-card__value { display: block; font-size: 0.88rem; font-weight: 600; color: var(--text); }

/* Contact form */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 0.82rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.08em; }

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); opacity: 0.6; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(79,142,247,0.12);
}

.form-submit { align-self: flex-start; }

.form-status {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  display: none;
}
.form-status.success { display: block; background: rgba(52,211,153,0.12); color: var(--green); border: 1px solid rgba(52,211,153,0.25); }
.form-status.error   { display: block; background: rgba(239,68,68,0.1); color: #f87171; border: 1px solid rgba(239,68,68,0.2); }

/* =============================================
   TUTORIALS
   ============================================= */
.tutorials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 24px;
  margin-top: 40px;
}

.tutorial-card--featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg,
    rgba(79,142,247,0.1) 0%,
    rgba(124,92,191,0.12) 50%,
    rgba(79,142,247,0.08) 100%);
  border-color: rgba(79,142,247,0.3);
  flex-direction: row;
  align-items: center;
  gap: 40px;
}
.tutorial-card--featured:hover { border-color: rgba(79,142,247,0.55); }
.tutorial-card--featured .tutorial-card__icon {
  width: 56px; height: 56px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  background: rgba(79,142,247,0.15);
  border: 1px solid rgba(79,142,247,0.3);
  color: var(--accent);
}
.tutorial-card--featured .tutorial-card__icon svg { width: 28px; height: 28px; }
.tutorial-card--featured .tutorial-card__body { flex: 1; }
.tutorial-card--featured .tutorial-card__title { font-size: 1.25rem; margin-bottom: 8px; }
.tutorial-card__sections {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 20px;
}
.tutorial-card__section-pill {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-muted);
  letter-spacing: 0.03em;
}
[data-theme="light"] .tutorial-card__section-pill {
  background: rgba(0,0,0,0.04);
}

@media (max-width: 640px) {
  .tutorial-card--featured { flex-direction: column; align-items: flex-start; gap: 20px; }
}

.tutorial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s, transform 0.2s;
}
.tutorial-card:hover {
  border-color: rgba(79,142,247,0.3);
  transform: translateY(-3px);
}

.tutorial-card__head {
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.tutorial-card__icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: rgba(79,142,247,0.12);
  color: var(--accent);
  border: 1px solid rgba(79,142,247,0.25);
}
.tutorial-card__icon svg { width: 20px; height: 20px; }
.tutorial-card__icon--purple { background: rgba(124,92,191,0.14); color: #b794f4; border-color: rgba(124,92,191,0.3); }
.tutorial-card__icon--blue   { background: rgba(0,164,239,0.12);  color: #58b9ff; border-color: rgba(0,164,239,0.28); }
.tutorial-card__icon--red    { background: rgba(239,68,68,0.12);  color: #fca5a5; border-color: rgba(239,68,68,0.28); }
.tutorial-card__icon--orange { background: rgba(255,140,0,0.14);  color: #ffb060; border-color: rgba(255,140,0,0.3); }

.tutorial-card__badge {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  background: rgba(79,142,247,0.12);
  color: var(--accent);
  border: 1px solid rgba(79,142,247,0.25);
}
.tutorial-card__badge--purple { background: rgba(124,92,191,0.14); color: #b794f4; border-color: rgba(124,92,191,0.3); }
.tutorial-card__badge--blue   { background: rgba(0,164,239,0.12); color: #58b9ff; border-color: rgba(0,164,239,0.28); }
.tutorial-card__badge--red    { background: rgba(239,68,68,0.12); color: #fca5a5; border-color: rgba(239,68,68,0.28); }
.tutorial-card__badge--orange { background: rgba(255,140,0,0.14); color: #ffb060; border-color: rgba(255,140,0,0.3); }
.tutorial-card__badge--green  { background: rgba(52,211,153,0.12); color: #6ee7b7; border-color: rgba(52,211,153,0.3); }

.arch-subhead {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-top: 56px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.arch-subhead:first-of-type { margin-top: 16px; }
.arch-lede {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 12px;
  margin-bottom: -4px;
  max-width: 720px;
}

.tutorial-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
}

.tutorial-card__desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
}
.tutorial-card__desc code {
  font-family: var(--mono);
  font-size: 0.82rem;
  background: rgba(79,142,247,0.1);
  color: var(--accent);
  padding: 2px 6px;
  border-radius: 4px;
}

.tutorial-card__code {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: #cbd5e1;
  margin: 0;
}
.tutorial-card__code code { font-family: inherit; color: inherit; background: none; padding: 0; }

[data-theme="light"] .tutorial-card__code { color: #1a202c; }

.tutorial-card__links {
  display: flex; flex-wrap: wrap; gap: 16px;
  margin-top: auto;
  padding-top: 8px;
}
.tutorial-card__links a {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--link);
  text-decoration: none;
  transition: color 0.2s;
}
.tutorial-card__links a:hover { color: var(--accent2); }

/* =============================================
   LINKS
   ============================================= */
.links__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 28px; }

.links-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 820px;
  margin: 0 auto 8px;
}
.links-preview__chip {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
}
.links-preview__chip:hover {
  color: var(--text);
  border-color: rgba(79,142,247,0.45);
  background: rgba(79,142,247,0.08);
  transform: translateY(-2px);
}

.link-group { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; }
.link-group__title {
  display: flex; align-items: center; gap: 8px;
  font-size: 0.8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 20px; padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.link-group__title svg { color: var(--accent); flex-shrink: 0; }

.link-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }

.link-item {
  display: flex; align-items: center; gap: 14px;
  padding: 12px;
  border-radius: var(--radius-sm);
  transition: background 0.2s, transform 0.15s;
}
.link-item:hover { background: rgba(79,142,247,0.07); transform: translateX(4px); }
.link-item--viber .link-item__icon { color: #7360f2; background: rgba(115,96,242,0.12); }
.link-item--viber:hover { background: rgba(115,96,242,0.08); }

.link-item__icon {
  width: 34px; height: 34px;
  border-radius: 8px;
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.15);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; color: var(--accent);
}
.link-item__icon svg { width: 16px; height: 16px; }

.link-item__body { flex: 1; min-width: 0; }
.link-item__name { display: block; font-size: 0.9rem; font-weight: 600; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.link-item__url  { display: block; font-size: 0.75rem; color: var(--text-muted); font-family: var(--mono); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.link-item__arrow { width: 14px; height: 14px; color: var(--text-muted); flex-shrink: 0; opacity: 0; transition: opacity 0.2s, transform 0.2s; }
.link-item:hover .link-item__arrow { opacity: 1; transform: translate(2px,-2px); }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--bg-dark);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}
.footer p { font-size: 0.85rem; color: var(--text-muted); }
.footer__thanks { margin-top: 8px; font-size: 0.78rem; }
.footer__thanks a { color: var(--link); text-decoration: none; }
.footer__thanks a:hover { text-decoration: underline; }

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .exp__layout { grid-template-columns: 1fr; }
  .certs { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .certs__heading { grid-column: 1 / -1; }
  .contact__layout { grid-template-columns: 1fr; }
  .contact__cards { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
}

@media (max-width: 768px) {
  .nav__links {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--nav-mobile);
    backdrop-filter: blur(16px);
    flex-direction: column;
    gap: 0;
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  }
  .nav__links.open { opacity: 1; visibility: visible; transform: translateY(0); }
  .nav__links li a { display: block; padding: 14px 24px; font-size: 1rem; }
  .nav__burger { display: flex; }
  #theme-toggle { display: flex; }

  /* Hamburger → X */
  .nav__burger span { transform-origin: center; }
  .nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav__burger.is-open span:nth-child(2) { opacity: 0; }
  .nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .about__grid { grid-template-columns: 1fr; gap: 36px; }
  .about__avatar { display: flex; justify-content: center; }
  .avatar-ring { width: 140px; height: 140px; }

  .hero__stats { gap: 12px; }
  .stat-card { padding: 18px 24px; min-width: 100px; }
}

@media (max-width: 900px) {
  .hobby-card--featured {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .dm-float { bottom: 16px; right: 16px; left: auto; }
}

@media (max-width: 600px) {
  .hobbies__grid { grid-template-columns: 1fr; }
  .certs { grid-template-columns: 1fr; }
  .contact__cards { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .section { padding: 64px 0; }
  .hero__cta { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
}

/* =============================================
   APPLICATIONS
   ============================================= */
.apps__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
  margin-top: 40px;
}

.app-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 0;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
  border-color: rgba(79,142,247,0.3);
}

.app-card__icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  flex-shrink: 0;
}
.app-card__icon-wrap--blue   { background: rgba(79,142,247,0.12); color: var(--accent); }
.app-card__icon-wrap--green  { background: rgba(52,211,153,0.12); color: var(--green); }
.app-card__icon-wrap--purple { background: rgba(124,92,191,0.12); color: var(--accent2); }
.app-card__icon-wrap--orange { background: rgba(251,146,60,0.12); color: #fb923c; }

.app-card__icon {
  width: 28px;
  height: 28px;
  stroke: currentColor;
}

.app-card__body { display: flex; flex-direction: column; flex: 1; }

.app-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.app-card__subtitle {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.app-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.app-card__cta {
  align-self: flex-start;
  margin-top: 4px;
  font-size: 0.875rem;
  padding: 10px 20px;
}
.app-card__contact-hint {
  display: block;
  width: 100%;
  margin-top: 2px;
  font-size: 0.75rem;
  font-family: var(--mono);
  color: var(--text-muted);
}
.app-card .tags { margin: 16px 0; }

/* Screenshot strip */
.app-card__screenshots {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0 -32px 16px;
  padding: 0 32px 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.app-card__screenshots::-webkit-scrollbar { height: 4px; }
.app-card__screenshots::-webkit-scrollbar-track { background: transparent; }
.app-card__screenshots::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }
/* Screenshot wrap — for privacy mask overlays */
.screenshot-wrap {
  position: relative;
  display: inline-block;
  flex-shrink: 0;
  height: 110px;
  line-height: 0;
}
.screenshot-wrap .screenshot-thumb {
  flex-shrink: 0;
  height: 100%;
  display: block;
}

/* Privacy redaction mask */
.prv-mask {
  position: absolute;
  background: rgba(120, 160, 220, 0.55);
  backdrop-filter: blur(10px) saturate(0.4);
  -webkit-backdrop-filter: blur(10px) saturate(0.4);
  border-radius: 3px;
  pointer-events: none;
  z-index: 2;
}

.screenshot-thumb {
  height: 110px;
  width: auto;
  border-radius: 6px;
  border: 1px solid var(--border);
  cursor: zoom-in;
  flex-shrink: 0;
  object-fit: cover;
  filter: brightness(0.88) saturate(1.3) sepia(0.3) hue-rotate(180deg);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s, filter 0.25s;
}
.screenshot-thumb:hover {
  transform: scale(1.03);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
  border-color: rgba(79,142,247,0.5);
  filter: brightness(1) saturate(1) sepia(0) hue-rotate(0deg);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,0.92);
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox__img-wrap {
  position: relative;
  display: inline-block;
  line-height: 0;
  cursor: default;
}
.lightbox__img-wrap .prv-mask {
  position: absolute;
  background: rgba(100, 140, 210, 0.6);
  backdrop-filter: blur(18px) saturate(0.3);
  -webkit-backdrop-filter: blur(18px) saturate(0.3);
  border-radius: 5px;
  pointer-events: none;
  z-index: 10;
}
.lightbox__img {
  max-width: 92vw;
  max-height: 88vh;
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  cursor: default;
  display: block;
}
.lightbox__close {
  position: absolute;
  top: 20px;
  right: 28px;
  background: none;
  border: none;
  color: #fff;
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0.7;
  transition: opacity 0.15s;
}
.lightbox__close:hover { opacity: 1; }

.training-topics {
  margin: 4px 0 16px;
  padding: 14px 16px;
  background: rgba(79, 142, 247, 0.06);
  border: 1px solid rgba(79, 142, 247, 0.18);
  border-radius: var(--radius-sm);
}
.training-topics__label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}
.tag--topic {
  background: rgba(79, 142, 247, 0.12);
  color: var(--accent);
  border: 1px solid rgba(79, 142, 247, 0.25);
  font-weight: 600;
}

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(79,142,247,0.4);
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s;
  z-index: 200;
}
.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.back-to-top:hover { background: var(--accent2); box-shadow: 0 6px 20px rgba(124,92,191,0.45); }

/* =============================================
   DIGITAL MEDIA — global floating banner
   ============================================= */
.dm-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  left: auto;
  z-index: 950;
  width: min(248px, calc(100vw - 32px));
  border-radius: 16px;
  border: 1px solid rgba(214,41,118,0.35);
  background: linear-gradient(155deg, rgba(24,119,242,0.16) 0%, rgba(214,41,118,0.14) 45%, rgba(10,102,194,0.12) 100%);
  backdrop-filter: blur(12px);
  padding: 16px 16px 14px;
  box-shadow: 0 16px 48px rgba(0,0,0,0.35);
  animation: dm-float-in 0.5s ease-out;
}
@keyframes dm-float-in {
  from { opacity: 0; transform: translateY(16px) scale(0.96); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.dm-float__eyebrow {
  display: block;
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #f472b6;
  margin-bottom: 4px;
}
.dm-float__title {
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 12px;
  color: var(--text);
}
.dm-float__icons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}
.dm-float__icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, border-color 0.2s;
}
.dm-float__icon:hover {
  transform: translateY(-2px);
  border-color: rgba(79,142,247,0.4);
}
.dm-float__icon img { width: 22px; height: 22px; display: block; }
.dm-float__cta {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-decoration: none;
}
.dm-float__cta:hover { text-decoration: underline; }
@media (max-width: 600px) {
  .dm-float { bottom: 16px; right: 16px; left: auto; }
}
@media (min-width: 1280px) {
  .dm-float { display: none; }
}

/* =============================================
   DIGITAL MEDIA — global left sidebar rail
   ============================================= */
.dm-rail {
  display: none;
}
@media (min-width: 1280px) {
  body.has-dm-rail { padding-left: 272px; }
  .dm-rail {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 88px;
    left: 16px;
    width: 248px;
    max-height: calc(100vh - 104px);
    overflow-y: auto;
    z-index: 900;
    border-radius: 16px;
    border: 1px solid rgba(88,185,255,0.28);
    background: linear-gradient(160deg, rgba(88,185,255,0.12) 0%, rgba(183,148,244,0.1) 55%, rgba(24,119,242,0.08) 100%);
    padding: 20px 18px 18px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.22);
  }
  .dm-rail__eyebrow {
    display: inline-block;
    font-family: var(--mono);
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent-blue);
    margin-bottom: 8px;
  }
  .dm-rail__title {
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.25;
    margin: 0 0 8px;
    color: var(--text);
  }
  .dm-rail__text {
    font-size: 0.78rem;
    line-height: 1.6;
    color: var(--text-muted);
    margin: 0 0 14px;
  }
  .dm-rail__nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
  }
  .dm-rail__link {
    font-size: 0.8rem;
    font-weight: 600;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
  }
  .dm-rail__link:hover {
    color: var(--text);
    background: rgba(255,255,255,0.05);
    border-color: var(--border);
  }
  .dm-rail__link.is-active {
    color: var(--text);
    background: rgba(79,142,247,0.12);
    border-color: rgba(79,142,247,0.35);
  }
  .dm-rail__logos {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
  }
  .dm-rail__logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.04);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s;
  }
  .dm-rail__logo:hover { transform: translateY(-2px); }
  .dm-rail__logo img { width: 18px; height: 18px; }
  .dm-rail__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 10px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, #1877F2, #4285F4);
    transition: filter 0.2s;
  }
  .dm-rail__cta:hover { filter: brightness(1.08); }
}

/* =============================================
   LIVE PROJECTS — global right sidebar rail
   ============================================= */
.projects-rail {
  display: none;
}
.projects-float {
  position: fixed;
  right: 12px;
  bottom: 148px;
  z-index: 940;
  width: min(220px, calc(100vw - 24px));
  animation: projects-float-in 0.55s ease-out;
}
@keyframes projects-float-in {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}
.projects-float__link {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  text-decoration: none;
  color: var(--text);
  border: 1px solid rgba(45,212,191,0.45);
  background: linear-gradient(145deg, rgba(13,148,136,0.22) 0%, rgba(20,184,166,0.1) 55%, rgba(15,118,110,0.14) 100%);
  backdrop-filter: blur(12px);
  box-shadow: 0 14px 40px rgba(0,0,0,0.28);
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.projects-float__link:hover {
  transform: translateY(-2px);
  border-color: rgba(94,234,212,0.65);
  box-shadow: 0 18px 48px rgba(13,148,136,0.25);
}
.projects-float__live {
  position: absolute;
  top: 10px;
  right: 12px;
  font-family: var(--mono);
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #6ee7b7;
}
.projects-float__link { position: relative; }
.projects-float__icon {
  flex: 0 0 36px;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0d9488, #14b8a6);
  color: #fff;
  box-shadow: 0 4px 14px rgba(13,148,136,0.45);
}
.projects-float__icon svg { width: 20px; height: 20px; }
.projects-float__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; padding-right: 28px; }
.projects-float__title { font-size: 0.88rem; line-height: 1.2; }
.projects-float__text { font-size: 0.72rem; color: var(--text-muted); line-height: 1.35; }
.projects-float__cta { font-size: 0.72rem; font-weight: 700; color: #5eead4; margin-top: 4px; }

@media (min-width: 1280px) {
  body.has-projects-rail { padding-right: 272px; }
  body.has-dm-rail.has-projects-rail { padding-left: 272px; padding-right: 272px; }
  .projects-float { display: none; }
  .projects-rail {
    display: flex;
    flex-direction: column;
    gap: 14px;
    position: fixed;
    top: 88px;
    right: 16px;
    width: 248px;
    max-height: calc(100vh - 104px);
    overflow-y: auto;
    z-index: 900;
  }
  .projects-rail__card {
    border-radius: 18px;
    padding: 18px 16px 16px;
    border: 1px solid rgba(45,212,191,0.35);
    background: linear-gradient(165deg, rgba(13,148,136,0.2) 0%, rgba(20,184,166,0.08) 45%, rgba(15,23,42,0.55) 100%);
    box-shadow: 0 16px 48px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.06);
    position: relative;
    overflow: hidden;
  }
  .projects-rail__card::before {
    content: '';
    position: absolute;
    top: -40px;
    right: -40px;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(94,234,212,0.25) 0%, transparent 70%);
    pointer-events: none;
  }
  .projects-rail__live {
    position: absolute;
    top: 14px;
    right: 14px;
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    color: #6ee7b7;
    text-shadow: 0 0 12px rgba(110,231,183,0.5);
  }
  .projects-rail__brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
  }
  .projects-rail__icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f766e, #14b8a6);
    color: #fff;
    box-shadow: 0 6px 18px rgba(13,148,136,0.45);
    flex-shrink: 0;
  }
  .projects-rail__icon svg { width: 22px; height: 22px; }
  .projects-rail__title {
    font-size: 1.05rem;
    font-weight: 800;
    line-height: 1.15;
    margin: 0;
    color: var(--text);
  }
  .projects-rail__eyebrow {
    display: block;
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #5eead4;
    margin: 0 0 8px;
  }
  .projects-rail__text {
    font-size: 0.76rem;
    line-height: 1.55;
    color: var(--text-muted);
    margin: 0 0 12px;
  }
  .projects-rail__shot-link {
    display: block;
    margin-bottom: 12px;
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(255,255,255,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  .projects-rail__shot-link:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  }
  .projects-rail__shot {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    object-position: top center;
  }
  .projects-rail__stats {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 10px;
  }
  .projects-rail__stat {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(13,148,136,0.22);
    border: 1px solid rgba(94,234,212,0.25);
    color: #99f6e4;
  }
  .projects-rail__tech {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 12px;
  }
  .projects-rail__tech span {
    font-size: 0.62rem;
    font-weight: 600;
    padding: 3px 7px;
    border-radius: 6px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    color: var(--text-muted);
  }
  .projects-rail__cta {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 11px 12px;
    border-radius: 10px;
    text-decoration: none;
    color: #fff;
    background: linear-gradient(135deg, #0d9488, #14b8a6);
    box-shadow: 0 6px 20px rgba(13,148,136,0.4);
    transition: filter 0.2s, transform 0.2s;
  }
  .projects-rail__cta:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
  }
  .projects-rail__more {
    border-radius: 14px;
    padding: 14px 14px 12px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.03);
  }
  .projects-rail__more-label {
    display: block;
    font-family: var(--mono);
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
  }
  .projects-rail__links {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 10px;
  }
  .projects-rail__links a {
    font-size: 0.76rem;
    font-weight: 600;
    padding: 7px 9px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    border: 1px solid transparent;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
  }
  .projects-rail__links a:hover {
    color: var(--text);
    background: rgba(255,255,255,0.05);
    border-color: var(--border);
  }
  .projects-rail__all {
    font-size: 0.74rem;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
  }
  .projects-rail__all:hover { text-decoration: underline; }
}

@media (max-width: 1279px) {
  .projects-rail { display: none !important; }
  body.has-projects-rail { padding-right: 0; }
}

@media (max-width: 720px) {
  .projects-float { bottom: 132px; right: 10px; width: min(200px, calc(100vw - 20px)); }
}

@media (prefers-reduced-motion: reduce) {
  .projects-float { animation: none; }
}

/* =============================================
   PRINT / PDF
   ============================================= */
@media print {
  @page { margin: 20mm; }

  .nav, .hero__scroll, .hero__bg-grid,
  .hero__cta, .hero__stats,
  .section__cta, .articles__topics,
  .contact-form, .contact__cards a:not([href^="mailto"]),
  .banner-latest,
  .dm-float,
  .dm-rail,
  .projects-rail,
  .projects-float,
  .nav__controls { display: none !important; }

  body { background: #fff !important; color: #111 !important; font-size: 11pt; }
  .hero { min-height: unset; padding: 32px 0; text-align: left; }
  .hero__name { font-size: 2.5rem; }

  .section, .section--dark { padding: 24px 0; background: #fff !important; }
  .section__title { font-size: 1.4rem; border-bottom: 2px solid #ddd; padding-bottom: 6px; margin-bottom: 16px; }

  .gradient-text { -webkit-text-fill-color: #2563eb; background: none; }

  .skill-group, .article-card, .timeline__card,
  .cert-card, .hobby-card, .link-group, .app-card,
  .case-study, .check-item {
    border: 1px solid #ddd !important;
    box-shadow: none !important;
    break-inside: avoid;
  }
  .cta-banner { background: none !important; border: 1px solid #ddd !important; }

  .tag, .badge { border: 1px solid #ccc; background: #f5f5f5 !important; color: #333 !important; }

  a[href]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #666; }
  a[href^="#"]::after,
  a[href^="javascript"]::after { content: ""; }
}

/* =============================================
   C# TUTORIAL PAGE LAYOUT
   ============================================= */
.page-hero {
  padding: calc(var(--nav-h) + 64px) 24px 56px;
  background: var(--bg-dark);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.page-hero__eyebrow {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  font-family: var(--mono);
  margin-bottom: 12px;
  display: block;
}
.page-hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.page-hero__sub {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 580px;
  margin: 0 auto 28px;
  line-height: 1.7;
}
.page-hero__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.tut-page {
  display: flex;
  align-items: flex-start;
  max-width: 1200px;
  margin: 0 auto;
  padding: 56px 24px 96px;
  gap: 48px;
}

.tut-sidebar {
  flex: 0 0 220px;
  position: sticky;
  top: calc(var(--nav-h) + 20px);
  max-height: calc(100vh - var(--nav-h) - 40px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.tut-sidebar::-webkit-scrollbar { width: 4px; }
.tut-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.tut-toc {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.tut-toc__heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin-bottom: 14px;
}
.tut-toc__list { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.tut-toc__link {
  display: block;
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-muted);
  border-left: 2px solid transparent;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  line-height: 1.4;
}
.tut-toc__link:hover,
.tut-toc__link.active {
  color: var(--accent);
  background: rgba(79,142,247,0.08);
  border-left-color: var(--accent);
}

.tut-content { flex: 1; min-width: 0; }

.tut-section {
  margin-bottom: 72px;
  scroll-margin-top: calc(var(--nav-h) + 24px);
}
.tut-section:last-child { margin-bottom: 0; }

.tut-section__header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.tut-section__num {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent);
  background: rgba(79,142,247,0.1);
  border: 1px solid rgba(79,142,247,0.2);
  padding: 3px 10px;
  border-radius: 4px;
  flex-shrink: 0;
  letter-spacing: 0.06em;
}
.tut-section__title {
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 800;
}
.tut-section__intro {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
  margin-bottom: 28px;
  max-width: 720px;
}

.tut-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

@media (max-width: 960px) {
  .tut-page { flex-direction: column; gap: 0; padding-top: 40px; }
  .tut-sidebar { position: static; flex: none; width: 100%; max-height: none; margin-bottom: 40px; }
  .tut-toc { padding: 16px; }
  .tut-toc__list { flex-direction: row; flex-wrap: wrap; gap: 6px; }
  .tut-toc__link { border-left: none; border: 1px solid var(--border); font-size: 0.8rem; padding: 5px 12px; }
  .tut-toc__link.active,
  .tut-toc__link:hover { border-color: var(--accent); }
}

/* =============================================
   REDUCED MOTION
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
}

/* =============================================
   TECH POLISH (overlay layer — additive only)
   Adds: animated grid, gradient orbs, terminal
   accents, corner brackets, neon hover glow,
   button sheen, custom scrollbar, code chrome.
   ============================================= */

/* — Global: selection + scrollbar — */
::selection { background: rgba(79,142,247,0.32); color: #fff; }
[data-theme="light"] ::selection { background: rgba(79,142,247,0.22); color: #0a0d14; }

html { scrollbar-color: var(--accent) var(--bg-dark); scrollbar-width: thin; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent), var(--accent2));
  border-radius: 10px;
  border: 2px solid var(--bg-dark);
}
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* — Nav: blinking cursor on logo — */
.nav__logo::after {
  content: '_';
  color: var(--accent);
  margin-left: 2px;
  -webkit-text-fill-color: var(--accent);
  animation: blink 1s step-end infinite;
}

/* — Hero: animated grid pan + ambient gradient orbs — */
.hero { background: radial-gradient(ellipse at top, rgba(79,142,247,0.05), transparent 60%); }
.hero__bg-grid { animation: grid-pan 40s linear infinite; }
@keyframes grid-pan {
  from { background-position: 0 0, 0 0; }
  to   { background-position: 60px 60px, 60px 60px; }
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}
.hero::before {
  top: 12%; left: 6%;
  width: 360px; height: 360px;
  background: radial-gradient(circle, rgba(79,142,247,0.35), transparent 65%);
  animation: orb-float-a 22s ease-in-out infinite;
}
.hero::after {
  bottom: 8%; right: 4%;
  width: 420px; height: 420px;
  background: radial-gradient(circle, rgba(124,92,191,0.32), transparent 65%);
  animation: orb-float-b 28s ease-in-out infinite;
}
[data-theme="light"] .hero::before { opacity: 0.4; }
[data-theme="light"] .hero::after  { opacity: 0.4; }

@keyframes orb-float-a {
  0%,100% { transform: translate(0,0)        scale(1); }
  50%     { transform: translate(40px,30px)  scale(1.08); }
}
@keyframes orb-float-b {
  0%,100% { transform: translate(0,0)        scale(1); }
  50%     { transform: translate(-50px,-30px) scale(1.1); }
}

/* — Section title: gradient bar accent — */
.section__title { position: relative; }
.section__title::after {
  content: '';
  display: block;
  width: 56px;
  height: 3px;
  margin-top: 14px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px rgba(79,142,247,0.45);
}

/* — Section sub: terminal prompt prefix — */
.section__sub::before {
  content: '> ';
  color: var(--accent);
  font-family: var(--mono);
  font-weight: 700;
  margin-right: 2px;
}

/* — Cards: scoped polish (brackets + neon hover ring) — */
.app-card,
.skill-group,
.article-card,
.tutorial-card,
.link-group,
.timeline__card,
.hobby-card,
.contact-card,
.contact-form,
.cert-card,
.case-study {
  position: relative;
  overflow: visible;
}

/* Corner brackets — appear on hover */
.app-card::before, .app-card::after,
.skill-group::before, .skill-group::after,
.article-card::before, .article-card::after,
.tutorial-card::before, .tutorial-card::after,
.link-group::before, .link-group::after,
.hobby-card::before, .hobby-card::after,
.case-study::before, .case-study::after {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  border: 2px solid var(--accent);
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
}
.app-card::before, .skill-group::before, .article-card::before,
.tutorial-card::before, .link-group::before, .hobby-card::before,
.case-study::before {
  top: -3px; left: -3px;
  border-right: none; border-bottom: none;
  transform: translate(4px, 4px);
}
.app-card::after, .skill-group::after, .article-card::after,
.tutorial-card::after, .link-group::after, .hobby-card::after,
.case-study::after {
  bottom: -3px; right: -3px;
  border-left: none; border-top: none;
  transform: translate(-4px, -4px);
}
.app-card:hover::before, .app-card:hover::after,
.skill-group:hover::before, .skill-group:hover::after,
.article-card:hover::before, .article-card:hover::after,
.tutorial-card:hover::before, .tutorial-card:hover::after,
.link-group:hover::before, .link-group:hover::after,
.hobby-card:hover::before, .hobby-card:hover::after,
.case-study:hover::before, .case-study:hover::after {
  opacity: 0.9;
  transform: translate(0, 0);
}

/* Neon hover glow ring (additive — preserves existing border-color hover) */
.app-card:hover,
.skill-group:hover,
.article-card:hover,
.tutorial-card:hover,
.link-group:hover,
.hobby-card:hover,
.cert-card:hover,
.stat-card:hover,
.timeline__card:hover,
.contact-card:hover,
.case-study:hover {
  box-shadow:
    0 0 0 1px rgba(79,142,247,0.35),
    0 12px 32px -8px rgba(79,142,247,0.28);
}

/* Tutorial featured card: stronger glow */
.tutorial-card--featured:hover {
  box-shadow:
    0 0 0 1px rgba(124,92,191,0.45),
    0 16px 40px -10px rgba(124,92,191,0.35);
}

/* — Stat card numbers: subtle pulse glow — */
.stat-card__num {
  filter: drop-shadow(0 0 12px rgba(79,142,247,0.0));
  transition: filter 0.4s ease;
}
.stat-card:hover .stat-card__num {
  filter: drop-shadow(0 0 14px rgba(79,142,247,0.55));
}

/* — Buttons: gradient sheen sweep on primary, glow on outline — */
.btn { position: relative; overflow: hidden; isolation: isolate; }
.btn--primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg,
    transparent 30%,
    rgba(255,255,255,0.28) 50%,
    transparent 70%);
  transform: translateX(-120%);
  transition: transform 0.7s ease;
  z-index: -1;
}
.btn--primary:hover::before { transform: translateX(120%); }
.btn--outline:hover {
  box-shadow:
    0 0 0 1px var(--accent),
    0 0 22px -2px rgba(79,142,247,0.45);
}

/* — Tutorial code blocks: terminal chrome (traffic lights) — */
.tutorial-card__code {
  position: relative;
  padding-top: 34px;
}
.tutorial-card__code::before {
  content: '';
  position: absolute;
  top: 12px; left: 14px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: #ff5f57;
  box-shadow:
    16px 0 0 #febc2e,
    32px 0 0 #28c840;
}
.tutorial-card__code::after {
  content: 'snippet.cs';
  position: absolute;
  top: 10px; right: 14px;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  opacity: 0.7;
}

/* — Page-hero (tutorial pages): match the new hero language — */
.page-hero { position: relative; overflow: hidden; }
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(79,142,247,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79,142,247,0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black 30%, transparent 100%);
  pointer-events: none;
  z-index: 0;
}
.page-hero > * { position: relative; z-index: 1; }
.page-hero__title::after {
  content: '';
  display: block;
  width: 64px; height: 3px;
  margin: 18px auto 0;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  box-shadow: 0 0 18px rgba(79,142,247,0.45);
}

/* — Tutorial section number badge: gentle glow — */
.tut-section__num {
  box-shadow: 0 0 12px -2px rgba(79,142,247,0.45);
}

/* — Active nav link: small leading dot for current section — */
.nav__links a.active::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 6px;
  vertical-align: middle;
  box-shadow: 0 0 8px var(--accent);
}

/* — Light-theme tone-downs (orbs/glows can over-saturate on white) — */
[data-theme="light"] .app-card:hover,
[data-theme="light"] .skill-group:hover,
[data-theme="light"] .article-card:hover,
[data-theme="light"] .tutorial-card:hover,
[data-theme="light"] .link-group:hover,
[data-theme="light"] .hobby-card:hover,
[data-theme="light"] .cert-card:hover,
[data-theme="light"] .stat-card:hover,
[data-theme="light"] .timeline__card:hover,
[data-theme="light"] .contact-card:hover,
[data-theme="light"] .case-study:hover {
  box-shadow:
    0 0 0 1px rgba(79,142,247,0.35),
    0 10px 28px -10px rgba(79,142,247,0.35);
}
[data-theme="light"] .section__title::after,
[data-theme="light"] .page-hero__title::after { box-shadow: none; }

/* — Print: strip all the polish (keep the page minimal) — */
@media print {
  .nav__logo::after,
  .hero::before, .hero::after,
  .section__title::after, .section__sub::before,
  .app-card::before, .app-card::after,
  .skill-group::before, .skill-group::after,
  .article-card::before, .article-card::after,
  .tutorial-card::before, .tutorial-card::after,
  .link-group::before, .link-group::after,
  .hobby-card::before, .hobby-card::after,
  .case-study::before, .case-study::after,
  .btn--primary::before,
  .tutorial-card__code::before, .tutorial-card__code::after,
  .page-hero::before,
  .nav__links a.active::before { display: none !important; }
  .tutorial-card__code { padding-top: 14px; }
}


/* =============================================
   COMPACT TUTORIAL GRID + CATEGORY FILTER
   Used on index.html #tutorials and tutorials.html
   ============================================= */
.tut-filter { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 22px; }
.tut-filter__chip {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.tut-filter__chip:hover { color: var(--text); border-color: var(--accent); }
.tut-filter__chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.tut-compact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}
.tut-mini-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}
.tut-mini-card:hover { border-color: rgba(79,142,247,0.35); transform: translateY(-2px); }
.tut-mini-card .tutorial-card__badge { align-self: flex-start; }
.tut-mini-card__title { font-weight: 700; font-size: 0.95rem; color: var(--text); line-height: 1.35; }
.tut-mini-card__desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.5; }
.tut-mini-card__meta {
  margin-top: auto;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}
.tut-mini-card.hidden { display: none; }

/* =============================================
   HIRE ME / FREELANCE CONSULTING
   ============================================= */
.hire-hero { text-align: center; max-width: 760px; margin: 0 auto 64px; }
.hire-hero__eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--green);
  background: rgba(52,211,153,0.12);
  border: 1px solid rgba(52,211,153,0.25);
  padding: 5px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hire-hero .section__title { text-align: center; }
.hire-hero .section__title::after { margin-left: auto; margin-right: auto; }
.hire-hero__lede {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.75;
  margin: 20px 0 28px;
}
.hire-hero__stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 32px;
}
.hire-hero .hero__cta { margin-top: 8px; }

.hire-block { margin-top: 72px; scroll-margin-top: calc(var(--nav-h) + 24px); }
.hire-block__title {
  font-size: 1.4rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 32px;
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
}
.check-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text);
  transition: border-color 0.2s, transform 0.2s;
}
.check-item:hover { border-color: rgba(52,211,153,0.35); transform: translateY(-2px); }
.check-item__icon {
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(52,211,153,0.14);
  border: 1px solid rgba(52,211,153,0.3);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.check-item__icon svg { width: 14px; height: 14px; }

.case-studies__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.case-study {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.2s, transform 0.2s;
}
.case-study:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-3px); }
.case-study__title { font-size: 1.1rem; font-weight: 700; color: var(--text); }
.case-study__row { display: flex; flex-direction: column; gap: 4px; }
.case-study__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}
.case-study__text { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }
.case-study--compact .tags { margin-top: 4px; }

.cta-banner {
  margin-top: 72px;
  text-align: center;
  padding: 56px 32px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(79,142,247,0.12) 0%, rgba(124,92,191,0.14) 100%);
  border: 1px solid rgba(79,142,247,0.25);
}
.cta-banner h3 { font-size: 1.6rem; font-weight: 800; margin-bottom: 12px; }
.cta-banner p { color: var(--text-muted); font-size: 1.02rem; margin-bottom: 28px; }

@media (max-width: 600px) {
  .hire-block { margin-top: 56px; }
  .cta-banner { padding: 40px 20px; }
  .cta-banner h3 { font-size: 1.3rem; }
}

/* =============================================
   UI POLISH V2 — focus states, disabled buttons,
   tactile press feedback
   ============================================= */

/* Buttons: disabled state was previously unstyled */
.btn:disabled,
.btn[disabled] {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}
.btn:disabled::before { display: none; }

/* Tactile press feedback on click */
.btn:active { transform: translateY(0) scale(0.97); }
.chip:active,
.tag:active,
.topic-pill:active,
.tut-filter__chip:active,
.links-preview__chip:active { transform: scale(0.96); }

/* Consistent keyboard focus ring across all interactive elements.
   Uses :focus-visible so mouse/touch users aren't shown a ring. */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
.btn:focus-visible,
.nav__icon-btn:focus-visible,
.nav__burger:focus-visible,
.chip:focus-visible,
.tag:focus-visible,
.topic-pill:focus-visible,
.tut-filter__chip:focus-visible,
.links-preview__chip:focus-visible,
.tut-toc__link:focus-visible,
.tut-jumpbar__chip:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Card-style links (large clickable regions) get an inset ring
   instead of an outset one so it doesn't get clipped by overflow */
.article-card:focus-visible,
.tut-mini-card:focus-visible,
.link-item:focus-visible,
.contact-card:focus-visible,
.hobby-card__photo:focus-visible,
.app-card__cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.nav__links a:focus-visible { outline-offset: -2px; }

/* Remove the generic outline on elements that already show a strong
   custom focus treatment, to avoid doubled rings */
.form-group input:focus-visible,
.form-group textarea:focus-visible { outline: none; }