/* =========================================================
   АРСТУДИЯ — design tokens
   ========================================================= */
:root{
  --burgundy: #6E1B33;
  --burgundy-dark: #4A1024;
  --burgundy-deep: #350C1A;
  --ink: #1C1B1A;
  --paper: #FAF7F4;
  --paper-dim: #F1E9E3;
  --stone: #8C8478;
  --line: rgba(28,27,26,0.12);
  --line-on-dark: rgba(250,247,244,0.16);

  --font-display: "Unbounded", sans-serif;
  --font-body: "Manrope", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --wrap: 1180px;
  --radius-pill: 999px;
  --radius-card: 4px;

  --ease: cubic-bezier(.22,.7,.2,1);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

.wrap{
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

/* subtle paper grain, echoes the letterhead's watermark texture */
.grain{
  position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  opacity: 0.025; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =========================================================
   Type scale
   ========================================================= */
.section-eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--burgundy);
  margin: 0 0 14px;
}
.section-eyebrow-light{ color: #D9A9B5; }

.section-title{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 3.6vw, 42px);
  line-height: 1.15;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
.section-title-light{ color: var(--paper); }

/* =========================================================
   Buttons
   ========================================================= */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 28px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14.5px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform .35s var(--ease), background .25s ease, border-color .25s ease, color .25s ease;
}
.btn:hover{ transform: translateY(-2px); }

.btn-primary{
  background: var(--burgundy);
  color: var(--paper);
}
.btn-primary:hover{ background: var(--burgundy-dark); }

.btn-ghost{
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}
.btn-ghost:hover{ background: var(--ink); color: var(--paper); }

.btn-small{ padding: 11px 22px; font-size: 13.5px; }
.btn-full{ width: 100%; }

/* =========================================================
   Header
   ========================================================= */
.site-header{
  position: sticky; top: 0; z-index: 100;
  background: rgba(250,247,244,0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner{
  display: flex;
  align-items: center;
  gap: 28px;
  height: 78px;
}
.brand{
  display: flex; align-items: center; gap: 10px;
  margin-right: auto;
}
.brand-word{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.brand-mark{ flex-shrink: 0; }

.main-nav{ display: flex; gap: 30px; }
.main-nav a{
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink);
  position: relative;
  padding: 4px 0;
}
.main-nav a::after{
  content: "";
  position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1.5px; background: var(--burgundy);
  transition: right .3s var(--ease);
}
.main-nav a:hover::after{ right: 0; }

.header-actions{ display: flex; align-items: center; gap: 22px; }
.header-phone{
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--stone);
}
.header-phone:hover{ color: var(--burgundy); }

.burger{
  display: none;
  width: 34px; height: 34px;
  background: none; border: none; cursor: pointer;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.burger span{
  width: 22px; height: 2px; background: var(--ink);
  transition: transform .3s var(--ease), opacity .3s ease;
}
.burger[aria-expanded="true"] span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2){ opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

.mobile-nav{
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 10px 32px 26px;
  border-top: 1px solid var(--line);
}
.mobile-nav a{ padding: 12px 0; font-weight: 600; font-size: 15px; border-bottom: 1px solid var(--line); }
.mobile-nav .btn{ margin-top: 14px; }

/* =========================================================
   Hero
   ========================================================= */
.hero{
  position: relative;
  overflow: hidden;
  padding-top: 96px;
  background: var(--paper);
}
.hero-blueprint{
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}
.draw-circle, .draw-arc, .draw-line{
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 2.4s var(--ease) forwards;
}
.draw-line{ stroke-dasharray: 900; stroke-dashoffset: 900; animation-duration: 1.6s; }
.delay-1{ animation-delay: .15s; }
.delay-2{ animation-delay: .3s; }
@keyframes draw{ to{ stroke-dashoffset: 0; } }

.hero-inner{
  position: relative; z-index: 1;
  padding: 90px 32px 70px;
  max-width: 760px;
}
.eyebrow{
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--burgundy);
  margin: 0 0 22px;
}
.hero-title{
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 26px;
  display: flex;
  flex-direction: column;
}
.hero-title-accent{ color: var(--burgundy); }

.hero-sub{
  font-size: 17.5px;
  color: #4A4744;
  max-width: 540px;
  margin: 0 0 36px;
}
.hero-actions{ display: flex; gap: 16px; flex-wrap: wrap; }

.hero-strip{
  position: relative; z-index: 1;
  border-top: 1px solid var(--line);
  background: rgba(250,247,244,0.7);
}
.hero-strip-inner{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 22px 32px;
}
.strip-item{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--stone);
  display: flex; align-items: center; gap: 10px;
  border-left: 1px solid var(--line);
  padding-left: 16px;
}
.strip-item:first-child{ border-left: none; padding-left: 0; }
.strip-num{ color: var(--burgundy); font-weight: 500; }

/* reveal-on-load for hero lines */
.reveal{
  opacity: 0;
  transform: translateY(16px);
  animation: reveal-up .8s var(--ease) forwards;
}
.hero-title .reveal{ animation-delay: .1s; }
.hero-title .delay-1{ animation-delay: .22s; }
.hero-title .delay-2{ animation-delay: .34s; }
.hero-sub.delay-3{ animation-delay: .5s; }
.hero-actions.delay-4{ animation-delay: .64s; }
@keyframes reveal-up{ to{ opacity: 1; transform: translateY(0); } }

/* =========================================================
   About
   ========================================================= */
.about{ padding: 110px 0; }
.about-grid{
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 60px;
}
.about-lead{
  font-size: 19px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 22px;
}
.about-body{
  font-size: 15.5px;
  color: #55514D;
  max-width: 560px;
  margin: 0 0 46px;
}
.about-facts{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  border-top: 1px solid var(--line);
  padding-top: 30px;
}
.fact-num{
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--burgundy);
  line-height: 1;
  margin-bottom: 10px;
}
.fact-label{
  font-size: 13px;
  color: var(--stone);
  line-height: 1.4;
}

/* =========================================================
   Services
   ========================================================= */
.services{ padding: 30px 0 110px; }
.services-head{ max-width: 560px; margin-bottom: 54px; }
.services-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.service-card{
  background: var(--paper);
  padding: 34px 26px;
  transition: background .3s ease;
}
.service-card:hover{ background: var(--paper-dim); }
.service-icon{ margin-bottom: 22px; }
.service-card h3{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  margin: 0 0 12px;
  line-height: 1.3;
}
.service-card p{
  font-size: 14px;
  color: var(--stone);
  margin: 0;
}

/* =========================================================
   Process (dark)
   ========================================================= */
.process{
  background: var(--paper);
  padding: 110px 0;
  color: var(--ink);
}
.process-head{ max-width: 560px; margin-bottom: 60px; }
.process .section-eyebrow-light{ color: var(--burgundy); }
.process .section-title-light{ color: var(--ink); }

.process-list{ border-top: 1px solid var(--line); }
.process-item{
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 32px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.process-item.in-view{ opacity: 1; transform: translateY(0); }

.process-index{
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--burgundy);
  padding-top: 4px;
}
.process-copy h3{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  margin: 0 0 8px;
}
.process-copy p{
  font-size: 15px;
  color: #55514D;
  margin: 0;
  max-width: 520px;
}

/* =========================================================
   Contact
   ========================================================= */
.contact{ padding: 110px 0; }
.contact-grid{
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 70px;
}
.contact-lead{
  font-size: 15.5px;
  color: #55514D;
  max-width: 460px;
  margin: 0 0 40px;
}
.contact-details{
  display: flex; flex-direction: column; gap: 18px;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}
.contact-row{ display: flex; gap: 18px; font-size: 14.5px; align-items: baseline; }
.contact-label{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--stone);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: 90px;
  flex-shrink: 0;
}
.contact-row a:hover{ color: var(--burgundy); }

.contact-map{ align-self: start; }
.map-frame{ overflow: hidden; aspect-ratio: 1 / 0.82; border: 1px solid var(--line); background: var(--paper-dim); }
.map-frame iframe{ width: 100%; height: 100%; border: 0; }
.map-caption{ display: flex; justify-content: space-between; align-items: center; gap: 18px; padding-top: 16px; border-top: 1px solid var(--line); }
.map-caption a{ color: var(--burgundy); font-size: 14px; font-weight: 700; }
.map-caption a:hover{ color: var(--burgundy-dark); }

/* =========================================================
   Footer — echoes the letterhead's maroon bar
   ========================================================= */
.site-footer{ background: var(--paper); color: #1C1B1A; }
.footer-inner{
  display: flex; align-items: center; justify-content: space-between;
  padding: 40px 32px 34px;
  flex-wrap: wrap; gap: 16px;
}
.footer-brand{ display: flex; align-items: center; gap: 12px; font-weight: 600; font-family: var(--font-display); font-size: 14px; }
.footer-copy{ font-size: 13px; color: #1C1B1A; margin: 0; }

.footer-bar{
  background: var(--burgundy);
  display: flex; justify-content: center; gap: 48px;
  padding: 16px 32px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.03em;
  flex-wrap: wrap;
}

/* =========================================================
   Focus visibility
   ========================================================= */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
  outline: 2px solid var(--burgundy);
  outline-offset: 2px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 980px){
  .main-nav, .header-actions{ display: none; }
  .burger{ display: flex; }
  .mobile-nav.open{ display: flex; }

  .about-grid, .contact-grid{ grid-template-columns: 1fr; gap: 40px; }
  .services-grid{ grid-template-columns: repeat(2, 1fr); }
  .hero-strip-inner{ grid-template-columns: repeat(2, 1fr); gap: 18px 0; }
  .strip-item:nth-child(3){ border-left: none; padding-left: 0; }
}

@media (max-width: 620px){
  .wrap{ padding: 0 20px; }
  .hero-inner{ padding: 60px 20px 50px; }
  .about, .services, .process, .contact{ padding: 70px 0; }
  .services-grid{ grid-template-columns: 1fr; }
  .about-facts{ grid-template-columns: 1fr; gap: 22px; }
  .process-item{ grid-template-columns: 1fr; gap: 8px; }
  .footer-bar{ gap: 12px 24px; justify-content: flex-start; }
}

/* =========================================================
   Reduced motion
   ========================================================= */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .draw-circle, .draw-arc, .draw-line, .reveal, .process-item{
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
    stroke-dashoffset: 0 !important;
  }
}