:root {
  --color-bg: #f3efe8;
  --color-surface: #ffffff;
  --color-ink: #161616;
  --color-ink-soft: #4d4d4d;
  --color-line: rgba(22, 22, 22, 0.14);
  --color-accent: #d3000f;
  --color-accent-soft: rgba(182, 122, 58, 0.16);
  --color-dark-panel: #101010;
  --color-dark-elevated: #1b1b1b;
  --color-white: #ffffff;
  --shadow-soft: 0 20px 40px rgba(0, 0, 0, 0.08);
  --transition-fast: 220ms ease;
  --header-height: 92px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--color-ink);
  background: var(--color-surface);
  text-rendering: optimizeLegibility;
}
body.is-lightbox-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(22, 22, 22, 0.08);
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.06);
}
.navbar { min-height: var(--header-height); padding: 0.9rem 0; }
.brand-logo { width: 100px; max-width: 50vw; }
.nav-link {
  position: relative;
  color: var(--color-ink);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  padding: 0.9rem 1rem !important;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: 0.55rem;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-fast);
}
.nav-link:hover::after,
.nav-link:focus-visible::after { transform: scaleX(1); }
.custom-toggler { border: 0; padding: 0; box-shadow: none !important; }
.custom-toggler span { display: block; width: 30px; height: 2px; margin: 6px 0; background: var(--color-ink); }

.section { position: relative; padding: 120px 0; scroll-margin-top: var(--header-height); }
.section-light { background: var(--color-bg); }
.section-white { background: var(--color-surface); }
.section-ink { background: linear-gradient(180deg, #121212 0%, #1a1a1a 100%); color: var(--color-white); }
.section-dark { color: var(--color-white); }

.hero-panel {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  background: #0f0f0f;
  display: flex;
  align-items: center;
}
.hero-media,
.hero-grid,
.hero-overlay,
.section-visual-media,
.section-visual-overlay,
.contact-media {
  position: absolute;
  inset: 0;
}
.hero-media,
.section-visual-media,
.contact-media {
  top: -10%;
  bottom: -10%;
}
.hero-media {
  background:
    linear-gradient(rgba(0,0,0,0.18), rgba(0,0,0,0.42)),
    url("../img/logirenov-topbg.jpg") center center / cover no-repeat;
  transform: scale(1.04);
}
.hero-grid {
  background-image:
    linear-gradient(rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.12;
}
.hero-overlay {
  background: linear-gradient(90deg, rgba(13,13,13,0.88) 0%, rgba(13,13,13,0.72) 42%, rgba(13,13,13,0.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(300px, 0.7fr);
  gap: 48px;
  align-items: end;
  padding-top: 120px;
}
.hero-copy { color: var(--color-white); }
.hero-kicker,
.section-label {
  margin-bottom: 1rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--color-accent);
}
.section-label.light { color: #d3000f; }
.hero-copy h1,
.section-title {
  margin: 0;
  line-height: 0.98;
  letter-spacing: -0.045em;
}
.hero-copy h1 {
  max-width: 11ch;
  font-size: clamp(2.8rem, 5.8vw, 6rem);
  text-transform: uppercase;
}
.hero-text,
.section-intro,
.text-panel p,
.service-panel p,
.signal-card p,
.process-row p,
.engagement-card p,
.contact-panel,
.site-footer p,
.hero-card {
  font-size: 1.03rem;
  line-height: 1.82;
}
.hero-text {
  max-width: 760px;
  margin: 1.4rem 0 2rem;
  color: rgba(255, 255, 255, 0.86);
}
.hero-actions { display: flex; gap: 0.9rem; flex-wrap: wrap; }
.btn {
  border-radius: 0;
  min-height: 54px;
  padding: 0.95rem 1.45rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
}
.btn-solid { background: var(--color-accent); border: 1px solid var(--color-accent); color: var(--color-white); }
.btn-solid:hover { background: #720000; border-color: #720000; color: var(--color-white); }
.btn-outline-hero { background: transparent; border: 1px solid rgba(255,255,255,0.28); color: var(--color-white); }
.btn-outline-hero:hover { background: rgba(255,255,255,0.08); color: var(--color-white); }

.hero-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
  padding: 2rem;
  color: var(--color-white);
}
.hero-card-line,
.contact-line {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.hero-card-line:last-child,
.contact-line:last-child { border-bottom: 0; }
.hero-card-line span,
.contact-line span {
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  opacity: 0.7;
}
.hero-card-line strong,
.contact-line strong { text-align: right; font-size: 0.98rem; }
.hero-scroll {
  position: absolute;
  left: 50%;
  bottom: 54px;
  transform: translateX(-50%);
  z-index: 2;
  width: 30px;
  height: 56px;
  border: 1px solid rgba(255,255,255,0.22);
  display: inline-flex;
  justify-content: center;
  align-items: flex-start;
}
.hero-scroll span {
  width: 2px;
  height: 12px;
  margin-top: 12px;
  background: var(--color-white);
  animation: heroScroll 1.8s infinite;
}
@keyframes heroScroll {
  0% { opacity: 0; transform: translateY(0); }
  35% { opacity: 1; }
  100% { opacity: 0; transform: translateY(14px); }
}

.intro-band {
  background: var(--color-surface);
  margin-top: -72px;
  z-index: 3;
  padding-top: 96px;
  padding-bottom: 96px;
}
.signal-card,
.text-panel,
.service-panel,
.engagement-card,
.contact-panel {
  height: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
}
.signal-index {
  width: 54px;
  height: 54px;
  border: 1px solid var(--color-accent);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  color: var(--color-accent);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}
.signal-card h2,
.service-panel h3,
.process-row h3,
.engagement-card h3 {
  margin: 0 0 0.8rem;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-title { font-size: clamp(2rem, 4.3vw, 4rem); max-width: 13ch; }
.section-title.centered,
.section-intro.centered { margin-left: auto; margin-right: auto; text-align: center; }
.section-title.light,
.light,
.light-soft { color: var(--color-white); }
.section-intro { max-width: 760px; margin: 1.2rem 0 0; color: var(--color-ink-soft); }
.light-soft { color: rgba(255,255,255,0.8); }
.section-heading { margin-bottom: 3rem; }
.text-panel { border-left: 3px solid var(--color-accent); }

.section-visual { overflow: hidden; isolation: isolate; }
.section-visual-media {
  z-index: 0;
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  transform: scale(1.04);
  will-change: transform;
}
.services-media {
  background-image:
    linear-gradient(rgba(0,0,0,0.36), rgba(0,0,0,0.48)),
    url("../img/w-06.webp");
}
.section-visual-overlay { background: rgba(10, 10, 10, 0.38); z-index: 1; }
.section-visual-overlay.strong { background: rgba(10, 10, 10, 0.62); }
.section-visual > .container,
.section-contact > .container { position: relative; z-index: 2; }

.service-panel {
  background: rgba(255,255,255,0.95);
  box-shadow: none;
  position: relative;
  color: var(--color-ink);
}
.service-panel h3,
.service-panel p {
  color: var(--color-ink);
}
.service-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 18px;
}
.project-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--color-line);
  background: var(--color-surface);
  cursor: zoom-in;
  min-height: 320px;
}
.project-item:nth-child(1),
.project-item:nth-child(4) { min-height: 430px; }
.project-item:nth-child(2),
.project-item:nth-child(3) { min-height: 300px; }
.project-item:nth-child(1) { grid-column: span 7; }
.project-item:nth-child(2) { grid-column: span 5; }
.project-item:nth-child(3) { grid-column: span 5; }
.project-item:nth-child(4) { grid-column: span 7; }
.project-item img {
  width: 100%;
  height: 100%;
  aspect-ratio: auto;
  object-fit: cover;
  transition: transform 400ms ease;
}
.project-item span {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 1rem 1.1rem;
  background: linear-gradient(to top, rgba(16,16,16,0.84), rgba(16,16,16,0));
  color: var(--color-white);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.project-item:hover img { transform: scale(1.05); }

.process-list { border-top: 1px solid rgba(255,255,255,0.14); }
.process-row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 1.4rem;
  padding: 1.65rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.14);
}
.process-row strong {
  color: var(--color-accent);
  font-size: 1.45rem;
  font-weight: 800;
}

.engagement-card { box-shadow: none; }
.engagement-card h3 { color: var(--color-accent); }

.section-contact {
  overflow: hidden;
  color: var(--color-white);
}
.contact-media {
  background:
    linear-gradient(rgba(10,10,10,0.45), rgba(10,10,10,0.70)),
    url("../img/w-05.webp") center center / cover no-repeat;
  transform: scale(1.04);
  will-change: transform;
}
.contact-panel {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  color: var(--color-white);
  box-shadow: none;
  backdrop-filter: blur(10px);
}
.contact-panel a:hover,
.hero-card a:hover {
  color: var(--color-white);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.site-footer {
  padding: 1.1rem 0;
  background: #0d0d0d;
  color: rgba(255,255,255,0.72);
  border-top: 1px solid rgba(255,255,255,0.08);
}
.site-footer p { margin: 0; font-size: 0.9rem; line-height: 1.5; }

.mobile-call-btn {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: none;
  align-items: center;
  gap: 0.65rem;
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid rgba(22,22,22,0.12);
  padding: 0.9rem 1rem;
  box-shadow: 0 16px 40px rgba(0,0,0,0.16);
  transition: transform var(--transition-fast);
}
.mobile-call-btn svg { width: 24px; height: 24px; fill: var(--color-accent); }
.mobile-call-btn span {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}
.mobile-call-btn:hover { transform: translateY(-2px); }

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(10,10,10,0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 220ms ease, visibility 220ms ease;
  z-index: 1055;
  padding: 2rem;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox-figure { margin: 0; max-width: min(1200px, 92vw); }
.lightbox-image { max-height: 78vh; width: auto; max-width: 100%; object-fit: contain; }
.lightbox-caption {
  color: rgba(255,255,255,0.82);
  margin-top: 1rem;
  text-align: center;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
}
.lightbox-close,
.lightbox-nav {
  position: absolute;
  border: 0;
  background: rgba(255,255,255,0.08);
  color: #fff;
  width: 52px;
  height: 52px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  line-height: 1;
}
.lightbox-close { top: 18px; right: 18px; }
.lightbox-prev { left: 18px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 18px; top: 50%; transform: translateY(-50%); }

.reveal-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease, transform 500ms ease;
}
.reveal-up.is-visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }

@media (max-width: 991.98px) {
  :root { --header-height: 72px; }
  .navbar-collapse {
    background: rgba(255,255,255,0.98);
    margin-top: 1rem;
    border: 1px solid var(--color-line);
    padding: 0.6rem;
  }
  .hero-content {
    grid-template-columns: 1fr;
    align-items: start;
    padding-top: 108px;
  }
  .hero-copy h1 { font-size: clamp(2.3rem, 8vw, 4rem); }
  .intro-band { margin-top: 0; padding-top: 82px; }
  .section { padding: 92px 0; }
  .project-grid { grid-template-columns: 1fr 1fr; }
  .project-item:nth-child(n) { grid-column: auto; }
  .hero-card-line,
  .contact-line { flex-direction: column; }
  .hero-card-line strong,
  .contact-line strong { text-align: left; }
}

@media (max-width: 767.98px) {
  .mobile-call-btn { display: inline-flex; }
  .project-grid { grid-template-columns: 1fr; }
  .project-item:nth-child(n) { min-height: 280px; }
}

@media (max-width: 575.98px) {
  .brand-logo { width: 85px; }
  .signal-card,
  .text-panel,
  .service-panel,
  .engagement-card,
  .contact-panel,
  .hero-card { padding: 1.5rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .lightbox { padding: 1rem; }
  .lightbox-close,
  .lightbox-nav { width: 44px; height: 44px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal-up,
  .project-item img,
  .mobile-call-btn,
  .hero-scroll span { transition: none !important; animation: none !important; transform: none !important; }
}


/* V2+ refinements: same identity, more life */
body { overflow-x: hidden; }
.navbar-nav .nav-link.active { color: var(--color-accent); }
.navbar-nav .nav-link.active::after { transform: scaleX(1); }

.hero-lines {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, transparent 0 12%, rgba(255,255,255,0.09) 12% 12.15%, transparent 12.15% 100%),
    linear-gradient(180deg, transparent 0 78%, rgba(182,122,58,0.26) 78% 78.25%, transparent 78.25% 100%);
  mix-blend-mode: screen;
  pointer-events: none;
}
.hero-accent {
  position: absolute;
  z-index: 1;
  border: 1px solid rgba(255,255,255,0.12);
  pointer-events: none;
}
.hero-accent-one {
  width: min(28vw, 360px);
  height: min(28vw, 360px);
  right: 8%;
  top: 18%;
  background: linear-gradient(135deg, rgba(182,122,58,0.14), rgba(255,255,255,0.02));
}
.hero-accent-two {
  width: min(20vw, 250px);
  height: min(20vw, 250px);
  right: 20%;
  bottom: 12%;
  background: linear-gradient(135deg, rgba(255,255,255,0.03), rgba(182,122,58,0.10));
}

.hero-media,
.section-visual-media,
.contact-media {
  transition: transform 120ms linear;
  will-change: transform;
}

.signal-card,
.text-panel,
.service-panel,
.engagement-card,
.contact-panel,
.hero-card,
.project-item {
  transition: transform 260ms ease, border-color 260ms ease, box-shadow 260ms ease, background-color 260ms ease;
}
.signal-card:hover,
.text-panel:hover,
.service-panel:hover,
.engagement-card:hover,
.contact-panel:hover,
.hero-card:hover {
  transform: translateY(-4px);
  border-color: rgba(182,122,58,0.28);
}

.service-panel:hover {
  background: rgba(255,255,255,0.98);
  box-shadow: 0 26px 44px rgba(0,0,0,0.14);
}
.service-panel::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 0;
  background: linear-gradient(180deg, rgba(182,122,58,0), rgba(182,122,58,0.08));
  transition: height 260ms ease;
}
.service-panel:hover::after { height: 100%; }
.service-panel > * { position: relative; z-index: 1; }

.project-item::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,10,10,0.22), rgba(10,10,10,0));
  opacity: 0;
  transition: opacity 260ms ease;
  z-index: 1;
}
.project-item .project-glow {
  position: absolute;
  inset: auto -10% -20% auto;
  width: 42%;
  height: 42%;
  background: radial-gradient(circle, rgba(182,122,58,0.34) 0%, rgba(182,122,58,0) 70%);
  opacity: 0;
  transform: translate3d(12px, 12px, 0);
  transition: opacity 280ms ease, transform 280ms ease;
  z-index: 1;
  pointer-events: none;
}
.project-item span { z-index: 2; }
.project-item:hover {
  transform: translateY(-4px);
  border-color: rgba(182,122,58,0.28);
  box-shadow: 0 22px 38px rgba(0,0,0,0.12);
}
.project-item:hover::before,
.project-item:hover .project-glow { opacity: 1; }
.project-item:hover .project-glow { transform: translate3d(0, 0, 0); }

.lightbox {
  backdrop-filter: blur(4px);
}
.lightbox-figure {
  position: relative;
}
.lightbox-image {
  border: 1px solid rgba(255,255,255,0.14);
  box-shadow: 0 26px 50px rgba(0,0,0,0.34);
}
.lightbox-close,
.lightbox-nav {
  backdrop-filter: blur(8px);
  transition: background-color 220ms ease, transform 220ms ease;
}
.lightbox-close:hover,
.lightbox-nav:hover {
  background: rgba(255,255,255,0.18);
  transform: translateY(-50%) scale(1.03);
}
.lightbox-close:hover { transform: scale(1.03); }

@media (max-width: 991.98px) {
  .hero-accent { display: none; }
  .hero-lines { opacity: 0.55; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-media,
  .section-visual-media,
  .contact-media,
  .signal-card,
  .text-panel,
  .service-panel,
  .engagement-card,
  .contact-panel,
  .hero-card,
  .project-item,
  .lightbox-close,
  .lightbox-nav { transition: none !important; }
}