/* =============================================
   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;
}

/* 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;
}

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(--accent); border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.section__sub a:hover { border-color: var(--accent); }
.section__cta { text-align: center; margin-top: 48px; }

/* =============================================
   NAV
   ============================================= */
.nav {
  position: fixed;
  top: 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) + 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(--accent); border-bottom: 1px solid rgba(79,142,247,0.35); transition: border-color 0.2s; }
.about__text p a:hover { border-color: var(--accent); }

.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; }

/* 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;
  flex-direction: row;
  align-items: center;
  gap: 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__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;
}

/* =============================================
   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); }

/* =============================================
   PROJECTS
   ============================================= */
.projects__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  display: flex; flex-direction: column; gap: 12px;
  transition: all 0.25s ease;
  cursor: pointer;
  position: relative; overflow: hidden;
}
.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.project-card:hover { border-color: rgba(79,142,247,0.3); transform: translateY(-5px); box-shadow: 0 12px 40px rgba(79,142,247,0.1); }
.project-card:hover::before { transform: scaleX(1); }

.project-card__header { display: flex; justify-content: space-between; align-items: flex-start; }
.project-card__icon { width: 32px; height: 32px; color: var(--accent); opacity: 0.7; }
.project-card__stars { font-size: 0.82rem; color: #f59e0b; font-weight: 600; }
.project-card__title { font-size: 1rem; font-weight: 700; color: var(--text); font-family: var(--mono); }
.project-card__desc { font-size: 0.88rem; color: var(--text-muted); line-height: 1.65; flex: 1; }
.project-card__footer { font-size: 0.82rem; color: var(--text-muted); display: flex; align-items: center; gap: 6px; margin-top: auto; }

.lang-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.lang-dot--csharp { background: #178600; }

/* =============================================
   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(--accent); border-bottom: 1px solid rgba(79,142,247,0.3); transition: border-color 0.2s; }
.contact__address a:hover { border-color: var(--accent); }

.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__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); }

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

.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__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); }

/* =============================================
   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: none;
    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;
  }
  .nav__links.open { display: flex; }
  .nav__links li a { display: block; padding: 14px 24px; font-size: 1rem; }
  .nav__burger { display: flex; }
  #lang-toggle, #theme-toggle { display: flex; }

  .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: 600px) {
  .hobbies__grid { grid-template-columns: 1fr; }
  .hobby-card--featured { flex-direction: column; gap: 16px; }
  .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;
}

/* =============================================
   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"]),
  .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, .project-card, .article-card, .timeline__card,
  .cert-card, .hobby-card, .link-group, .app-card {
    border: 1px solid #ddd !important;
    box-shadow: none !important;
    break-inside: avoid;
  }

  .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: ""; }
}