/* About section: skills row (custom blocks) */
.about-skills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem 1.5rem;
  margin: 2.2rem 0 1.2rem 0;
  justify-content: flex-start;
}
.about-skill-card {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 10px;
  padding: 1.05rem 1.25rem 0.85rem 1.25rem;
  min-width: 220px;
  max-width: 320px;
  flex: 1 1 220px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  box-shadow: 0 2px 8px -2px rgba(0,0,0,.55);
}
.about-skill-card strong {
  font-size: 1.01rem;
  color: var(--accent-alt);
  margin-bottom: 0.32em;
  font-weight: 600;
}
.about-skill-card span {
  font-size: 0.93rem;
  color: var(--text-dim);
  margin-top: 0.18em;
  line-height: 1.45;
}
@media (max-width: 900px) {
  .about-skills-row { flex-direction: column; gap: 1.1rem 0; }
  .about-skill-card { max-width: 100%; min-width: 0; }
}
/* About section: single wide block, justified text */
.about-headline {
  width: 100%;
  max-width: none;
  margin: 0 0 .55rem;
  font-size: .97rem;
  line-height: 1.6;
  color: var(--text);
}
.about-headline p {
  text-align: justify;
  text-align-last: left;
  hyphens: auto;
  margin-bottom: 1.1em;
}
@media (max-width: 900px) {
  .about-headline { max-width: 100%; }
}
/* About section: 3 logical blocks, equal width, justified text */
/* Dark modern style for Oleg Serbinov portfolio */
:root {
  --bg: #111720; /* светлее */
  --bg-alt: #18202a; /* контрастная, но тоже чуть светлее */
  --surface: #1f2731;
  --surface-alt: #25303b;
  --border: #2a3139;
  --border-soft: #252c34;
  --text: #d1d9e0;
  --text-dim: #94a1ad;
  --text-faint: #5d6a75;
  --accent: #66b2ff; /* слегка мягче */
  --accent-hover: #8cc9ff;
  --accent-alt: #ffab6b; /* тёплый контраст */
  --accent-alt-hover: #ffc089;
  --danger: #ff5f56;
  --radius: 14px;
  --gradient-deep: radial-gradient(circle at 25% 30%,#1d2732 0%,#0d1117 70%);
  --gradient-soft: linear-gradient(145deg, #1e252c 0%, #232d37 60%, #1b2129 100%);
  --focus: 0 0 0 3px rgba(255,171,107,0.35);
  --shadow: 0 8px 28px -10px rgba(0,0,0,.55),0 4px 12px -6px rgba(0,0,0,.5);
  --shadow-soft: 0 2px 6px -2px rgba(0,0,0,.55);
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin:0; background: var(--bg); color: var(--text); font-size:16px; line-height:1.58; text-rendering:optimizeLegibility; -webkit-font-smoothing:antialiased; position:relative; display: flex; flex-direction: column; min-height: 100vh; }
main { margin:0; padding:0; }

img,svg { max-width:100%; height:auto; display:block; }
a { color: var(--accent); text-decoration:none; }
a:focus-visible { outline:none; box-shadow:var(--focus); border-radius:6px; }

.site-header { position:sticky; top:0; z-index:50; backdrop-filter: blur(12px); background:rgba(13,17,23,0.8); border-bottom:1px solid var(--border); }
.site-header .inner { max-width:1200px; margin:0 auto; display:flex; align-items:center; gap:2rem; padding:.85rem 1.25rem; }
.branding { font-weight:700; letter-spacing:1px; font-size:1.15rem; background:linear-gradient(120deg,var(--accent),var(--accent-alt)); -webkit-background-clip:text; background-clip:text; color:transparent; display: inline-block; padding: 0.5rem 0.8rem; border: 1px solid var(--border); border-radius: 6px; box-shadow: var(--shadow-soft); transition:transform 0.3s ease, box-shadow 0.3s ease; }
.branding:hover { transform:scale(1.05); box-shadow:var(--shadow); }

.main-nav ul { list-style:none; display:flex; gap:1.25rem; padding:0; margin:0; }
.main-nav a { padding:.5rem .25rem; font-weight:500; position:relative; }
.main-nav a::after { content:""; position:absolute; left:0; bottom:-2px; width:0; height:2px; background:var(--accent-alt); }

.nav-toggle { display:none; background:none; border:1px solid var(--border); color:var(--text); padding:.4rem .7rem; border-radius:6px; cursor:pointer; }

.cta { margin-left:auto; background:linear-gradient(135deg,var(--accent-alt),var(--accent-alt-hover)); color:#111; padding:.65rem 1.05rem; border-radius:10px; font-weight:600; box-shadow:var(--shadow-soft); letter-spacing:.5px; }

.hero { position:relative; overflow:hidden; padding:5.5rem 0 4.5rem;
  background-size:cover, cover, cover, cover; background-position:center; }
.hero .inner { max-width:1000px; margin:0 auto; padding:0 1.25rem; }
.hero h1 { font-size:clamp(2.4rem,4.2vw,3.4rem); line-height:1.07; margin:0 0 1.25rem; background:linear-gradient(90deg,#ffffff,#d5e2ef 60%,#a9b9c8); -webkit-background-clip:text; background-clip:text; color:transparent; letter-spacing:.5px; text-shadow:0 2px 12px rgba(0,0,0,.55); }
.lead { font-size:1.15rem; max-width:780px; }
.hero-actions { display:flex; gap:1rem; margin-top:2rem; flex-wrap:wrap; }

.btn { --btn-bg:var(--surface-alt); display:inline-flex; align-items:center; gap:.55rem; padding:.8rem 1.25rem; border-radius:12px; font-weight:600; background:var(--btn-bg); color:var(--text); border:1px solid var(--border-soft); box-shadow:var(--shadow-soft); font-size:.9rem; letter-spacing:.4px; position:relative; overflow:hidden; }
.btn::before { content:""; position:absolute; inset:0; background:linear-gradient(130deg,rgba(255,255,255,0.06),rgba(255,255,255,0)); opacity:0; }
.btn.primary { --btn-bg:linear-gradient(135deg,var(--accent-alt),var(--accent-alt-hover)); color:#111; border:none; }
.btn.ghost { background:rgba(255,255,255,0.03); }

.panel { padding:0; background:color-mix(in srgb, var(--bg) 90%, transparent); position:relative; }
#skills-expertise { margin-top: -1px; }
#contact { background: var(--bg); }
.panel .inner { max-width:1200px; margin:0 auto; padding:2rem 1.25rem; }
.about-section .inner { padding-bottom: 0; }
#skills-expertise .inner { padding-top: 0; }
.panel h2 { font-size:2rem; margin:0 0 1.4rem; letter-spacing:.5px; font-weight:600; background:linear-gradient(90deg,#f0f3f6,#b7c4d1); -webkit-background-clip:text; background-clip:text; color:transparent; }

/* Enhanced heading effects */
.panel h2.gradient-text {
  background: linear-gradient(45deg, var(--accent), var(--accent-alt), var(--accent-hover), var(--accent-alt));
  background-size: 300% 300%;
  animation: gradient-shift 4s ease infinite;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.panel h2.text-shadow-anim {
  text-shadow: 0 0 10px rgba(255, 171, 107, 0.5);
  animation: glow 2s ease-in-out infinite alternate;
}

.panel h2.float {
  animation: float 6s ease-in-out infinite;
}
.section-intro { max-width:760px; margin-bottom:2rem; color:#fff; }

.two-col { display:grid; gap:3rem; grid-template-columns:repeat(auto-fit,minmax(320px,1fr)); align-items:start; }

.fact-box { background:var(--surface); border:1px solid var(--border); padding:1.25rem 1.1rem; border-radius:var(--radius); box-shadow:var(--shadow); }
.fact-box ul { list-style:none; margin:0; padding:0; display:grid; gap:.65rem; }
.fact-box li { font-size:.95rem; color:#fff; }
.fact-box span { display:block; font-weight:600; color:var(--accent); font-size:.85rem; text-transform:uppercase; letter-spacing:.5px; }

.cards { display:grid; gap:1.6rem; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); }
.card { background:var(--gradient-soft); border:1px solid var(--border-soft); padding:1.3rem 1.15rem 1.5rem; border-radius:var(--radius); position:relative; overflow:hidden; display:flex; flex-direction:column; gap:.65rem; box-shadow:var(--shadow-soft); transition:transform 0.3s ease, box-shadow 0.3s ease; cursor:pointer; }
.card::before { content:""; position:absolute; inset:0; background:radial-gradient(circle at 15% 20%,rgba(255,255,255,0.09),transparent 70%); mix-blend-mode:overlay; opacity:0; pointer-events:none; transition:opacity 0.3s ease; }
.card:hover { transform:translateY(-8px); box-shadow:var(--shadow); }
.card:hover::before { opacity:1; }
.card h3 { margin:.2rem 0 .35rem; font-size:1.07rem; letter-spacing:.3px; font-weight:600; color:#fff; }
.card p { margin:0; font-size:.86rem; color:#fff; }
.card { user-select:text; }

/* Enhanced card effects */
.card.tilt { transform-style: preserve-3d; }
.card.tilt:hover { transform: translateY(-8px) rotateX(5deg) rotateY(5deg); }
.card.wave { position: relative; overflow: hidden; }
.card.wave::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent); transition: left 0.5s; }
.card.wave:hover::before { left: 100%; }
.card.glow { animation: glow 3s ease-in-out infinite alternate; }

.skill-groups { display:grid; gap:2rem; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); }
.skill-group h3 { font-size:1.05rem; margin:0 0 .7rem; color:var(--accent); letter-spacing:.5px; }
.skill-group ul { list-style:none; margin:0; padding:0; display:grid; gap:.4rem; font-size:.86rem; }
.skill-group li { background:var(--surface); border:1px solid var(--border); padding:.45rem .6rem; border-radius:8px; line-height:1.3; color:#fff; transition:transform 0.2s ease, background-color 0.2s ease; }
.skill-group li:hover { transform:translateX(4px); background-color:rgba(255,255,255,0.05); }

.project-grid { display:grid; gap:1.7rem; grid-template-columns:repeat(auto-fit,minmax(280px,1fr)); }
.proj { background:var(--surface); border:1px solid var(--border-soft); padding:1.15rem .95rem 1.25rem; border-radius:var(--radius); display:flex; flex-direction:column; gap:.6rem; box-shadow:var(--shadow-soft); transition:transform 0.3s ease, box-shadow 0.3s ease; cursor:pointer; }
.proj:hover { transform:translateY(-6px); box-shadow:var(--shadow); }
.proj h3 { margin:0; font-size:1.05rem; }
.proj p { margin:0; font-size:.85rem; color:#fff; }
.tags { list-style:none; display:flex; flex-wrap:wrap; gap:.4rem; margin:.2rem 0 0; padding:0; }
.tags li { font-size:.65rem; letter-spacing:.5px; background:#243040; padding:.25rem .5rem; border-radius:20px; text-transform:uppercase; color:#fff; transition:transform 0.2s ease; }
.tags li:hover { transform:scale(1.05); }
/* Project images */
.proj img { width:100%; border-radius:8px; aspect-ratio: 4 / 2.2; object-fit:cover; background:#141a21; border:1px solid var(--border); transition:transform 0.3s ease; }
.proj:hover img { transform:scale(1.03); }

.service-list { display:grid; gap:1.5rem; grid-template-columns:repeat(auto-fit,minmax(240px,1fr)); }
.service { background:var(--surface); border:1px solid var(--border-soft); padding:1rem .9rem 1.15rem; border-radius:var(--radius); position:relative; overflow:hidden; transition:transform 0.3s ease, box-shadow 0.3s ease; cursor:pointer; }
.service::after { content:""; position:absolute; inset:0; background:linear-gradient(120deg,rgba(255,255,255,0.04),transparent); opacity:0; pointer-events:none; transition:opacity 0.3s ease; }
.service:hover { transform:translateY(-5px); box-shadow:var(--shadow); }
.service:hover::after { opacity:1; }
.service h3 { margin:.15rem 0 .5rem; font-size:.97rem; color:var(--accent-alt); letter-spacing:.4px; }
.service p { margin:0; font-size:.78rem; color:#fff; }

/* Enhanced service effects */
.service.tilt { transform-style: preserve-3d; }
.service.tilt:hover { transform: translateY(-5px) rotateX(3deg) rotateY(3deg); }
.service.magnetic { transition: transform 0.3s cubic-bezier(0.23, 1, 0.320, 1); }
.service.magnetic:hover { transform: translate3d(0, -8px, 0); }
.service.particles { position: relative; overflow: hidden; }
.service.particles::after { content: ''; position: absolute; top: -50%; left: -50%; width: 200%; height: 200%; background: radial-gradient(circle, rgba(255, 171, 107, 0.1) 1px, transparent 1px); background-size: 20px 20px; animation: float 20s linear infinite; pointer-events: none; }

/* Documentation section */
.doc-grid { display:grid; gap:1.6rem; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); margin-top:1rem; }
.doc-item { background:var(--surface); border:1px solid var(--border-soft); border-radius:var(--radius); padding:1rem .9rem 1.1rem; display:flex; flex-direction:column; gap:.6rem; font-size:.7rem; color:#fff; box-shadow:var(--shadow-soft); }
.doc-item img { width:100%; aspect-ratio:4/3; object-fit:cover; border-radius:6px; border:1px solid var(--border); background:#121a21; }
.deliverables { list-style:disc; margin:.2rem 0 0 1.1rem; padding:0; display:grid; gap:.45rem; font-size:.78rem; color:#fff; }
.code-snippet { background:#10161d; border:1px solid var(--border-soft); padding:.9rem 1rem; border-radius:12px; font-size:.64rem; line-height:1.45; overflow:auto; box-shadow:inset 0 0 0 1px #18222c; }

.contact-list li:nth-child(7) { font-size: 0.9rem; }

/* QR codes */
.qr-grid { display:grid; gap:2.5rem; grid-template-columns:repeat(auto-fit,minmax(120px,140px)); margin:4.7rem auto 2.2rem; justify-content:center; }
.qr-grid figure { margin:0; text-align:center; display:flex; flex-direction:column; gap:.3rem; font-size:.75rem; letter-spacing:.3px; color:#fff; line-height:1.3; }
.qr-grid figcaption small { font-size:.65rem; opacity:.8; font-weight:400; }
.qr-grid img { width:100%; border-radius:16px; border:1px solid var(--border-soft); background:#1c2530; padding:.4rem; transition:transform 0.3s ease, z-index 0.3s ease; cursor:pointer; position:relative; }
.qr-grid img:active { transform:scale(1.05); }

/* QR Code expansion overlay */
.qr-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(5px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  pointer-events: none;
}

body.qr-expanded .qr-overlay {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* Expanded QR code state */
.qr-grid img.expanded {
  position: fixed !important;
  bottom: 10vh !important;
  left: 50vw !important;
  transform: translateX(-50%) scale(1.2) !important;
  z-index: 1000 !important;
  max-width: 200px !important;
  width: 200px !important;
  border-radius: 20px !important;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5) !important;
  background: #fff !important;
  padding: 1rem !important;
}

.qr-grid img.expanded::before {
  content: '📱 Наведите камеру телефона';
  position: absolute;
  top: -60px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  background: var(--surface) !important;
  color: var(--accent-alt) !important;
  padding: 0.5rem 1rem !important;
  border-radius: 10px !important;
  font-size: 0.9rem !important;
  font-weight: 600 !important;
  white-space: nowrap !important;
  box-shadow: var(--shadow) !important;
  border: 1px solid var(--border-soft) !important;
}

@media (max-width: 768px) {
  .qr-grid img.expanded {
    transform: translateX(-50%) scale(0.9) !important;
    max-width: 180px !important;
    width: 180px !important;
  }

  .qr-grid img.expanded::before {
    font-size: 0.8rem !important;
    top: -50px !important;
  }
}

.contact-form { max-width:680px; display:grid; gap:1rem; margin: 0; }
.contact-form .row { display:grid; gap:1rem; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); }
.contact-form label { font-size:.75rem; letter-spacing:.5px; display:grid; gap:.4rem; text-transform:uppercase; color:#fff; }
.contact-form input, .contact-form textarea { background:var(--surface); border:1px solid var(--border-soft); color:var(--text); padding:.65rem .75rem; border-radius:10px; font:inherit; resize:vertical; }
.form-status { font-size:.75rem; color:var(--accent); min-height:1em; margin-top: 0.4rem; }

/* Contact form section */
.contact-form-section { margin: 2rem 0 1rem; }
.contact-form-section h3 { font-size:1.2rem; margin:0 0 1rem; color:var(--accent-alt); letter-spacing:.5px; }
.submit-btn { background:linear-gradient(135deg,var(--accent-alt),var(--accent)); color:#111; border:none; padding:.75rem 1.5rem; border-radius:10px; font-weight:600; cursor:pointer; box-shadow:var(--shadow-soft); margin-top: 0.4rem; }
.submit-btn:disabled { opacity:0.6; cursor:not-allowed; }

/* Contact grid layout */
.contact-grid {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
  margin-top: 1rem;
}

.contact-info {
  flex: 1;
  min-width: 300px;
  display: flex;
  flex-direction: column;
}

.contact-info h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  flex-shrink: 0;
}

.contact-form-section {
  flex: 1;
  min-width: 350px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  min-height: 363px;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 1;
}

.contact-form-section h3 {
  margin-top: 0;
  margin-bottom: 1.25rem;
  flex-shrink: 0;
}

.contact-form-section form {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

@media (max-width: 900px) {
  .contact-grid {
    flex-direction: column;
    gap: 2rem;
  }

  .contact-info,
  .contact-form-section {
    min-width: unset;
  }

  .contact-form-section {
    order: -1; /* Form appears first on mobile */
  }
}

.site-footer { background:#0a0e13; border-top:1px solid var(--border-soft); padding:2.4rem 0 3.1rem; margin-top:0; font-size:.75rem; }
.site-footer .inner { max-width:1200px; margin:0 auto; padding:0 1.25rem; display:flex; flex-direction:column; gap:.6rem; position:relative; align-items: center; }
.to-top { position:absolute; right:1.25rem; top:0; padding:.4rem .7rem; background:#1c232c; border:1px solid var(--border); border-radius:6px; font-size:.8rem; }
.small { color:#fff; }

@media (max-width:860px) {
  .nav-toggle { display:block; padding:.6rem 1rem; font-size:1rem; border-radius:8px; }
  .main-nav ul { position:absolute; top:100%; right:1rem; flex-direction:column; background:var(--bg-alt); padding:1rem; border:1px solid var(--border); border-radius:12px; width:200px; box-shadow:var(--shadow); visibility:hidden; opacity:0; }
  .main-nav ul.open { visibility:visible; opacity:1; }
  .cta { display:none; }
}

/* Accessibility & utility */
::selection { background:var(--accent-alt); color:#111; }

/* Motion preferences */
@media (prefers-reduced-motion: reduce) {
  * { animation:none!important; transition:none!important; }
}

/* About metrics list */
.metrics { list-style:none; margin:0; padding:0; display:grid; gap:.6rem; font-size:.82rem; }
.metrics li { background:var(--surface); border:1px solid var(--border-soft); padding:.55rem .7rem; border-radius:10px; color:#fff; position:relative; }
.metrics li span { font-weight:600; color:var(--accent-alt); display:inline-block; margin-right:.35rem; font-size:1.1rem; }

/* Utility focus for interactive elements */

/* Coordinated Scroll Reveal Animations */
.reveal { opacity:1; transform:translateY(0); transition:none; }
.reveal.visible { opacity:1; transform:translateY(0); }

/* Staggered reveals for different sections */
.reveal-about { transition-delay: 0s; }
.reveal-skills { transition-delay: 0s; }
.reveal-services { transition-delay: 0s; }
.reveal-process { transition-delay: 0s; }
.reveal-contact { transition-delay: 0s; }

/* Advanced Animation Effects */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 20px rgba(255, 171, 107, 0.3); }
  50% { box-shadow: 0 0 30px rgba(255, 171, 107, 0.6), 0 0 40px rgba(255, 171, 107, 0.4); }
}

@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink {
  50% { border-color: transparent; }
}

/* Floating elements */
.float { animation: float 6s ease-in-out infinite; }
.float-delayed { animation: float 6s ease-in-out infinite; animation-delay: 2s; }

/* Pulse effects */
.pulse { animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite; }

/* Glow effects */
.glow { animation: glow 3s ease-in-out infinite alternate; }

/* Gradient text animation */
.gradient-text {
  background: linear-gradient(45deg, var(--accent), var(--accent-alt), var(--accent-hover), var(--accent-alt));
  background-size: 300% 300%;
  animation: gradient-shift 4s ease infinite;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Typing effect */
.typing-effect {
  overflow: hidden;
  border-right: 2px solid var(--accent);
  white-space: nowrap;
  animation: typing 3s steps(40, end), blink 0.75s step-end infinite;
}

/* 3D Tilt effect */
.tilt {
  transform-style: preserve-3d;
  transition: transform 0.3s ease;
}

.tilt:hover {
  transform: rotateX(5deg) rotateY(5deg) scale(1.02);
}

/* Magnetic effect */
.magnetic {
  transition: transform 0.3s cubic-bezier(0.23, 1, 0.320, 1);
}

.magnetic:hover {
  transform: translate3d(0, -8px, 0);
}

/* Wave effect */
.wave {
  position: relative;
  overflow: hidden;
}

.wave::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.wave:hover::before {
  left: 100%;
}

/* Morphing button */
.morph-btn {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.morph-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.morph-btn:hover::before {
  width: 300px;
  height: 300px;
}

/* Particle effect */
.particles {
  position: relative;
  overflow: hidden;
}

.particles::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 171, 107, 0.1) 1px, transparent 1px);
  background-size: 20px 20px;
  animation: float 20s linear infinite;
  pointer-events: none;
}

/* Parallax background */
.parallax-bg {
  background-attachment: fixed;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

/* Text shadow animation */
.text-shadow-anim {
  text-shadow: 0 0 10px rgba(255, 171, 107, 0.5);
  animation: glow 2s ease-in-out infinite alternate;
}

/* Profile image effects */
.profile { margin:100px 0 1.5rem; width:100%; max-width:340px; aspect-ratio:1/1; position:relative; transition:transform 0.3s ease; }
.profile:hover { transform:translateY(-5px); }
.profile img { width:100%; height:100%; object-fit:cover; border-radius:50%; border:3px solid #1f262d; box-shadow:0 4px 18px -6px rgba(0,0,0,.6),0 0 0 4px rgba(255,171,107,0.08); background:#10161d; position:relative; transition:transform 0.3s ease; }
.profile img:hover { transform:scale(1.02); }
.profile img::after { content:""; position:absolute; inset:-6px; border-radius:50%; background:conic-gradient(from 120deg,var(--accent-alt),var(--accent),var(--accent-alt)); opacity:.5; filter:blur(14px); z-index:-1; transition:opacity 0.3s ease; }
.profile:hover img::after { opacity:.7; }
.about-left { display:flex; flex-direction:column; }
.profile-name { margin-top:.6rem; font-size:1.15rem; letter-spacing:.6px; font-weight:600; text-align:center; color:var(--accent-hover); }
.profile-contact-link { margin-top:2.8rem; text-align:center; font-size:1.1rem; }
.profile-contact-link a { color:#111; text-decoration:none; background:linear-gradient(135deg,var(--accent-alt),var(--accent-alt-hover)); padding:.6rem 1.2rem; border-radius:10px; font-weight:600; box-shadow:var(--shadow-soft); }
.about-section { padding:0; }
/* New two-column About layout */
.about-grid { display:grid; grid-template-columns:minmax(250px,360px) minmax(480px,1fr); gap:2.4rem 3rem; align-items:start; }
.about-grid .about-photo { display:flex; justify-content:center; align-items:flex-start; }
.about-grid .about-content { display:flex; flex-direction:column; }
.about-grid h2 { margin-top:.2rem; }
/* Reset intro / focus margins for left alignment in wide layout */
.about-grid .about-intro, .about-grid .about-focus { margin:.45rem 0 0; }
.about-headline, .about-focus, .about-personal { font-size:.9rem; line-height:1.5; margin:0 0 .55rem; color:var(--text);
  width:100%;
  max-width:none;
  grid-column: 1 / -1;
}
.metrics.compact { grid-template-columns:repeat(auto-fit, minmax(130px, 1fr)); gap:1rem 1rem; margin-top:.7rem; }
.metrics.compact li { padding:.42rem .5rem; font-size:.85rem; letter-spacing:.32px; text-align:center; display:flex; flex-direction:column; align-items:center; justify-content:center; min-height:70px; }
.metrics.compact li span { display:block; margin:0 0 .2rem; }

/* Project domains block */
.project-domains { margin:.9rem 0 0; }
.domains-heading { font-size:.95rem; letter-spacing:.5px; margin:0 0 .7rem; font-weight:600; color:var(--accent-alt); }
.domains { list-style:none; margin:0; padding:0; display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:.45rem .55rem; font-size:.66rem; letter-spacing:.4px; }
.domains li { background:var(--surface); border:1px solid var(--border-soft); padding:.45rem .55rem .45rem 1.05rem; border-radius:10px; color:#fff; position:relative; display:flex; align-items:center; justify-content:center; text-align:center; min-height:60px; }
.domains li::before { content:""; position:absolute; width:5px; height:5px; border-radius:50%; background:var(--accent-alt); left:.5rem; top:50%; transform:translateY(-50%); opacity:.75; }
@media (max-width:980px){
  .project-domains { margin:2rem auto 0; max-width:760px; }
  .domains { font-size:.72rem; }
}

/* Wide screen compression: place metrics & domains side-by-side to reduce height */
@media (min-width:1100px){
  .about-grid .about-content { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); grid-auto-rows:auto; column-gap:1.6rem; row-gap:.75rem; grid-template-areas:
    "heading heading"
    "intro intro"
    "focus focus"
    "personal personal"
    "metrics metrics"
    "domains domains"; }
  .about-grid .about-content h2 { grid-area:heading; }
  .about-grid .about-intro { grid-area:intro; }
  .about-grid .about-focus { grid-area:focus; }
  .about-grid .about-personal { grid-area:personal; }
  .about-grid .metrics.compact { grid-area:metrics; margin-top:.4rem; grid-template-columns:repeat(4, minmax(180px, 1fr)); }
  .about-grid .project-domains { grid-area:domains; margin-top:1rem; }
  .project-domains .domains { grid-template-columns:repeat(auto-fill,minmax(130px,1fr)); }
  .about-section { padding:0; }
}

@media (max-width: 1200px) {
  .about-grid { gap:2.6rem 3rem; grid-template-columns:minmax(240px,340px) 1fr; }
}
@media (max-width: 980px) {
  .about-grid { grid-template-columns:1fr; text-align:center; }
  .about-grid .about-photo {
    order: -1;
    margin-bottom: 1rem;
  }
  .profile {
    margin-top: 0;
  }
  .about-grid .about-content { align-items:center; }
  .about-grid .about-intro, .about-grid .about-focus { margin:.8rem auto 0; }
  .metrics.compact { max-width:680px; margin:1.15rem auto 0; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); }
}

.visually-hidden { position:absolute!important; width:1px!important; height:1px!important; padding:0!important; margin:-1px!important; overflow:hidden!important; clip:rect(0 0 0 0)!important; white-space:nowrap!important; border:0!important; }

/* Process flow */
.process-flow { position:relative; margin-top:1.2rem; }
.flow-rail { list-style:none; margin:0; padding:0; display:flex; flex-direction:column; gap:1rem; align-items: center; }
.process-step {
  background: var(--surface);
  border: 1px solid var(--border-soft);
  padding: .9rem .85rem 1rem 1rem;
  border-radius: 14px;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .55rem;
  font-size: 1rem;
  line-height: 1.4;
  box-shadow: var(--shadow-soft);
  width: 100%;
  max-width: 400px;
  margin-bottom: 20px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  cursor: pointer;
}

.process-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent-alt);
}
.process-step h3 { margin:0; font-size:1rem; letter-spacing:.4px; display:flex; align-items:flex-start; gap:.45rem; color:var(--accent-alt); font-weight:600; }


.step-index { display:flex; align-items:center; justify-content:center; width:32px; height:32px; border-radius:50%; background:linear-gradient(135deg,var(--accent-alt),var(--accent)); color:#111; font-size:1.5rem; font-weight:600; box-shadow:0 0 0 3px rgba(255,171,107,0.18); flex-shrink: 0; aspect-ratio: 1 / 1; }

.step-index:hover {
  transform: scale(1.2);
  font-size: 1.8rem;
  transition: transform 0.3s ease, font-size 0.3s ease;
}
.outputs { list-style:none; margin:0; padding:0; display:flex; flex-wrap:wrap; gap:.35rem; }
.outputs li { background:#243040; border:1px solid var(--border); padding:.25rem .5rem; border-radius:20px; font-size:.55rem; letter-spacing:.5px; text-transform:uppercase; color:#fff; }
.flow-svg-wrapper { position:absolute; inset:0; pointer-events:none; }
.flow-svg { width:100%; height:180px; position:absolute; top:0; left:0; }

.flow-connectors::before { content:""; position:absolute; left:50%; top:0; width:4px; height:100%; background:
  repeating-linear-gradient(180deg, transparent 0 100px, linear-gradient(180deg,rgba(255,171,107,0.5),rgba(102,178,255,0.5)) 100px 104px);
  mask:linear-gradient(#000,#000) top/4px 100% repeat-x; opacity:.22; transform:translateX(-50%); }

@media (min-width:768px){
  .flow-rail {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: stretch;
  }
  .process-step {
    margin-bottom: 0;
  }
}

@media (min-width:1200px){
  .flow-connectors::before { background:
    repeating-linear-gradient(180deg, transparent 0 120px, linear-gradient(180deg,rgba(255,171,107,0.55),rgba(102,178,255,0.55)) 120px 124px); }
}
@media (max-width:760px){
  .process-step { font-size:.85rem; }
  .outputs li { font-size:.58rem; }
}

@media (max-width: 900px) {
  body::before { opacity:.42; background:
    linear-gradient(160deg, rgba(17,23,32,0.78) 0%, rgba(17,23,32,0.6) 55%, rgba(17,23,32,0.88) 100%); }
  .panel { text-align: center; }
  .cards { justify-content: center; }
  .service-list { justify-content: center; }
  .project-grid { justify-content: center; }
  .doc-grid { justify-content: center; }
  /* Mobile-specific enhancements */
  body { background: linear-gradient(135deg, #0f1419 0%, #1a1f26 50%, #0d1117 100%); }
  .panel { background: rgba(26, 31, 38, 0.95); border-radius: 16px; margin: 1rem; padding: 1.5rem 1rem; }
  .panel h2 { font-size: 1.8rem; margin-bottom: 1.5rem; }
  .card, .service, .proj { border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,0.4); }
  .btn { padding: 0.9rem 1.5rem; font-size: 1rem; border-radius: 12px; }
  /* Make contact form full width on mobile */
  .contact-form-section { max-width: 100%; width: 100%; }
}

/* Extra small screens (phones) */
@media (max-width: 400px) {
  body { font-size: 14px; line-height: 1.5; }
  .site-header .inner { padding: 0.75rem 0.75rem; }
  .branding { font-size: 1rem; padding: 0.4rem 0.6rem; }
  .hero { padding: 4rem 0 3rem; }
  .hero h1 { font-size: clamp(2rem, 6vw, 2.8rem); }
  .hero .inner { padding: 0 0.75rem; }
  .lead { font-size: 1rem; max-width: 100%; }
  .hero-actions { flex-direction: column; gap: 0.75rem; }
  .panel .inner { padding: 1.5rem 0.75rem; }
  .panel { margin: 0.5rem; padding: 1rem 0.75rem; border-radius: 12px; }
  .panel h2 { font-size: 1.5rem; margin-bottom: 1rem; }
  .section-intro { font-size: 0.9rem; margin-bottom: 1.5rem; }
  .two-col { grid-template-columns: 1fr; gap: 2rem; }
  .fact-box { padding: 1rem 0.75rem; }
  .cards { grid-template-columns: 1fr; gap: 1rem; }
  .card { padding: 1rem 0.75rem; }
  .card h3 { font-size: 1rem; }
  .card p { font-size: 0.8rem; }
  .skill-groups { grid-template-columns: 1fr; gap: 1.5rem; }
  .skill-group h3 { font-size: 0.95rem; }
  .skill-group ul { font-size: 0.8rem; }
  .project-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .proj { padding: 0.9rem 0.6rem; }
  .proj h3 { font-size: 0.95rem; }
  .proj p { font-size: 0.8rem; }
  .service-list { grid-template-columns: 1fr; gap: 1rem; }
  .service { padding: 0.8rem 0.6rem; }
  .service h3 { font-size: 0.9rem; }
  .service p { font-size: 0.75rem; }
  .doc-grid { grid-template-columns: 1fr; gap: 1rem; }
  .doc-item { padding: 0.8rem 0.6rem; }
  .about-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .profile { margin: 0 0 1rem; max-width: 280px; }
  .profile-name { font-size: 1rem; }
  .profile-contact-link { margin-top: 1.5rem; }
  .profile-contact-link a { padding: 0.5rem 1rem; font-size: 0.9rem; }
  .metrics.compact { grid-template-columns: 1fr; gap: 0.75rem; }
  .metrics.compact li { min-height: 60px; padding: 0.5rem; font-size: 0.8rem; }
  .contact-grid { gap: 1.5rem; }
  .contact-info h2 { font-size: 1.3rem; margin-bottom: 1rem; }
  .contact-list li { padding: 0.6rem 0.8rem; font-size: 0.9rem; }
#contact .inner { padding: 0; }
  .contact-grid { gap: 1rem; padding: 0; margin: 0; width: 100%; }
  .contact-info { padding: 0; margin: 0; }
  .contact-form-section { padding: 0.3rem 0.2rem; }
  .contact-list { gap: 0.5rem; padding: 0; margin: 0; }
  .contact-list li { padding: 0.4rem 0.3rem; margin: 0; font-size: 0.7rem; }
  .contact-form-section h2 { font-size: 1.3rem; }
  .submit-btn { padding: 0.6rem 1rem; font-size: 0.9rem; min-width: 120px; }
  .qr-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; margin: 3rem auto 1.5rem; }
  .qr-grid img { padding: 0.3rem; }
  .qr-grid figcaption { font-size: 0.7rem; }
  .site-footer .inner { padding: 1.5rem 0.75rem; }
  .site-footer { padding: 1.5rem 0 2rem; }
  .to-top { right: 0.75rem; }
  
  /* Fix step-index for very small screens */
  .step-index {
    width: 24px !important;
    height: 24px !important;
    font-size: 1rem;
    flex-shrink: 0;
    aspect-ratio: 1 / 1;
  }
}

/* Header alignment for contact section */
.contact-info h2 {
  line-height: 1.2;
  display: flex;
  align-items: center;
  min-height: 2.5rem;
  justify-content: center;
}

/* Enhanced Contact Section Styling */
.contact-grid {
  display: flex !important;
  gap: 4rem !important;
  align-items: stretch !important;
  margin-top: 2rem !important;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 1rem;
  position: relative;
  z-index: 1;
}

.contact-info {
  flex: 1;
  min-width: 320px;
  max-width: 400px;
  display: flex;
  flex-direction: column;
}

.contact-info .contact-headers {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 2rem;
}

.contact-info h2 {
  margin: 0 !important;
  flex-shrink: 0;
  text-align: center;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--accent-alt);
  letter-spacing: 0.5px;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.contact-list li {
  font-size: 1rem;
  line-height: 1.4;
  color: #fff;
  padding: 0.8rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  box-shadow: var(--shadow-soft);
  position: relative;
  z-index: 2;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  text-align: left;
}

.contact-list li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
  border-color: var(--accent-alt);
}

.contact-list li strong {
  color: var(--accent-alt);
  font-weight: 600;
}

.contact-list li a {
  color: #fff;
  text-decoration: none;
  transition: color 0.3s ease;
}

.contact-list li a:hover {
  color: var(--accent-alt);
}

.contact-form-section {
  flex: 1;
  min-width: 380px;
  max-width: 676px;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  padding: 1rem 1rem 0.1rem;
  box-shadow: var(--shadow-soft);
  min-height: 242px;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 2;
  margin-top: 5rem;
}

.contact-form-section h2 {
  position: absolute;
  top: -5rem;
  left: 0;
  right: 0;
  text-align: center;
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--accent-alt);
  letter-spacing: 0.5px;
  margin: 0;
  z-index: 3;
}

.contact-form-section form {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  position: relative;
  z-index: 4;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

@media (min-width: 600px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }
}

.contact-form-section label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: #fff;
  letter-spacing: 0.3px;
  text-transform: uppercase;
}

  .contact-form-section input,
  .contact-form-section textarea { padding: 0.6rem 0.5rem; font-size: 0.9rem; }.contact-form-section input:focus,
.contact-form-section textarea:focus {
  outline: none;
  border-color: var(--accent-alt);
  box-shadow: 0 0 0 3px rgba(255, 171, 107, 0.15);
  background: rgba(255, 255, 255, 0.08);
}

.contact-form-section input::placeholder,
.contact-form-section textarea::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.submit-btn {
  margin-top: 0.4rem;
  padding: 0.9rem 1.8rem;
  background: linear-gradient(135deg, var(--accent-alt), var(--accent));
  color: #111;
  border: none;
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  align-self: center;
  min-width: 160px;
  position: relative;
  z-index: 5;
  transition: transform 0.3s ease, box-shadow 0.3s ease, filter 0.3s ease;
}

.submit-btn:hover {
  filter: brightness(1.05);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Enhanced button effects */
.submit-btn.morph-btn {
  position: relative;
  overflow: hidden;
}

.submit-btn.morph-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.submit-btn.morph-btn:hover::before {
  width: 300px;
  height: 300px;
}

.submit-btn.pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.form-status {
  text-align: center;
  font-size: 0.9rem;
  min-height: 1.2rem;
  margin-top: 0.4rem;
  position: relative;
  z-index: 5;
}

/* Enhanced responsive design */
@media (max-width: 1024px) {
  .contact-grid {
    gap: 3rem !important;
  }
}

@media (max-width: 900px) {
  .contact-grid {
    flex-direction: column !important;
    gap: 2rem !important;
    align-items: center;
  }

  .contact-info,
  .contact-form-section {
    min-width: unset !important;
    max-width: 776px;
    width: 100%;
  }

  .contact-form-section {
    order: -1; /* Form appears first on mobile */
    margin-top: 0;
  }

  .contact-form-section h2 {
    position: static;
    top: auto;
    margin: 0 0 1rem 0;
    font-size: 1.3rem;
  }

  .contact-form-section {
    padding: 1rem 1.5rem 0.4rem;
    min-height: auto;
  }

  .contact-list {
    gap: 1rem;
  }

  .contact-list li {
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
  }
}

/* Unified metric card hover effect */
.metric-hover {
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.metric-hover:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 25px rgba(255, 171, 107, 0.3);
  border-color: var(--accent-alt);
}

/* Share button styles */
.share-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.share-btn:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(255, 171, 107, 0.3);
}

.share-btn svg {
  transition: transform 0.3s ease;
}

.share-btn:hover svg {
  transform: scale(1.1);
}

.share-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.share-btn:hover::before {
  left: 100%;
}

/* Mobile styles for share button */
@media (max-width: 768px) {
  .share-btn {
    padding: 0.5rem 0.8rem;
    font-size: 0.8rem;
  }
  
  .share-btn span {
    display: none;
  }
  
  /* Fix step-index distortion on mobile */
  .step-index {
    width: 28px !important;
    height: 28px !important;
    font-size: 1.2rem;
    flex-shrink: 0;
    aspect-ratio: 1 / 1;
  }
  
  .step-index:hover {
    font-size: 1.3rem;
  }
}

/* Share feedback animations */
@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}