/* ===== Fonts ===== */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@500;600;700&family=Onest:wght@400;500&display=swap');

/* ===== Tokens ===== */
:root {
  --bg: #FFFFFF;
  --bg-warm-gray: #959493;
  --ink: #171717;
  --red: #C21F26;
  --white: #FFFFFF;
  --border: rgba(23, 23, 23, 0.12);

  --font-head: 'Manrope', 'Segoe UI', sans-serif;
  --font-body: 'Onest', 'Segoe UI', sans-serif;

  --fs-name: clamp(2.75rem, 1.2rem + 6vw, 9.375rem);
  --fs-h2: clamp(2rem, 1.1rem + 3.6vw, 4.75rem);
  --fs-stat: clamp(2.5rem, 1.2rem + 4vw, 5.25rem);
  --fs-body: clamp(1.0625rem, 0.95rem + 0.4vw, 1.25rem);
  --fs-nav: clamp(0.8125rem, 0.75rem + 0.2vw, 0.9375rem);

  --content-max: 1280px;
  --gap-section: clamp(64px, 4vw + 32px, 140px);
  --pad-outer: clamp(18px, 3vw, 32px);

  --radius-lg: 30px;
  --radius-md: 20px;
  --radius-sm: 14px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--content-max); margin: 0 auto; padding: 0 var(--pad-outer); }
section { padding: var(--gap-section) 0; }

h2.section-title {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-h2);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0 0 clamp(32px, 3vw, 56px);
}
.section-dark h2.section-title { color: var(--white); }

/* ===== Reveal on scroll ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 480ms var(--ease), transform 480ms var(--ease);
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: clamp(0.9375rem, 0.4vw + 0.85rem, 1.0625rem);
  padding: 15px 28px;
  border-radius: 100px;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background-color 220ms var(--ease), color 220ms var(--ease), border-color 220ms var(--ease), transform 220ms var(--ease);
  white-space: nowrap;
}
.btn:active { transform: scale(0.98); }

/* light background: red primary / outlined black secondary */
.btn-primary { background: var(--red); color: var(--white); }
.btn-primary:hover { background: var(--ink); color: var(--white); }
.btn-outline-dark { background: var(--white); color: var(--ink); border-color: var(--ink); }
.btn-outline-dark:hover { background: var(--ink); color: var(--white); }

/* dark background (Contacts): Telegram stays red, Email/VK are outlined white */
.section-dark .btn-primary:hover { background: var(--white); color: var(--red); }
.btn-outline-light { background: var(--ink); color: var(--white); border-color: rgba(255,255,255,0.7); }
.btn-outline-light:hover { background: var(--white); color: var(--ink); border-color: var(--white); }

/* ===== Nav ===== */
.site-header {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad-outer);
  pointer-events: none;
}
.brand-mark {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 10px 18px;
  pointer-events: auto;
}
nav.pill-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 6px;
  pointer-events: auto;
}
nav.pill-nav a {
  font-size: var(--fs-nav);
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 100px;
  color: var(--ink);
  transition: color 200ms var(--ease);
}
nav.pill-nav a:hover { color: var(--red); }

.menu-toggle {
  display: none;
  pointer-events: auto;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.menu-toggle span, .menu-toggle span::before, .menu-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--ink);
  position: relative;
  transition: transform 220ms var(--ease), opacity 220ms var(--ease);
}
.menu-toggle span::before { position: absolute; top: -6px; }
.menu-toggle span::after { position: absolute; top: 6px; }
.menu-toggle.is-open span { background: transparent; }
.menu-toggle.is-open span::before { transform: translateY(6px) rotate(45deg); }
.menu-toggle.is-open span::after { transform: translateY(-6px) rotate(-45deg); }

.mobile-menu {
  position: fixed;
  top: 74px;
  right: var(--pad-outer);
  left: var(--pad-outer);
  z-index: 99;
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: 0 20px 50px rgba(23,23,23,0.12);
  padding: 10px;
  display: none;
  flex-direction: column;
  gap: 2px;
}
.mobile-menu.is-open { display: flex; }
.mobile-menu a {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  transition: color 200ms var(--ease);
}
.mobile-menu a:hover { color: var(--red); }

@media (max-width: 720px) {
  nav.pill-nav { display: none; }
  .menu-toggle { display: flex; }
}

/* ===== Hero ===== */
.hero {
  padding-top: clamp(90px, 9vw, 130px);
  padding-bottom: var(--gap-section);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 4vw, 72px);
  align-items: center;
}
.hero-name {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-name);
  line-height: 0.98;
  letter-spacing: -0.02em;
  margin: 0 0 16px;
}
.hero-text {
  font-size: var(--fs-body);
  color: rgba(23, 23, 23, 0.75);
  max-width: 46ch;
  margin: 0 0 18px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}
.tag {
  font-size: clamp(0.8125rem, 0.3vw + 0.75rem, 0.9375rem);
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 100px;
  background: var(--white);
  border: 1px solid var(--ink);
  color: var(--ink);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.hero-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-warm-gray);
  aspect-ratio: 4 / 5;
}
.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 10%;
}

@media (max-width: 900px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-photo { order: 2; max-width: 480px; margin: 0 auto; }
  .hero-text, .hero-tags, .hero-actions, .hero-name { order: 1; }
}

/* ===== About (bento) ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  grid-auto-rows: minmax(180px, auto);
  gap: 20px;
}
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: clamp(24px, 2.4vw, 40px);
  transition: transform 260ms var(--ease), border-color 260ms var(--ease);
}
.card:hover { transform: translateY(-4px); border-color: rgba(23,23,23,0.25); }
.card h3 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.25rem, 0.6vw + 1.1rem, 1.625rem);
  line-height: 1.2;
  margin: 0 0 14px;
}
.card p { margin: 0; color: rgba(23, 23, 23, 0.75); }
.card-accent { background: var(--red); color: var(--white); border-color: var(--red); }
.card-accent p { color: rgba(255,255,255,0.88); }
.card-dark { background: var(--ink); color: var(--white); border-color: var(--ink); }
.card-dark p { color: rgba(255,255,255,0.75); }
.card-1 {
  grid-row: 1 / 3;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.card-1 h3 { font-size: clamp(1.5rem, 1vw + 1.2rem, 2.125rem); margin-bottom: 18px; }
.card-1 p { font-size: clamp(1.0625rem, 0.3vw + 1rem, 1.1875rem); }
.card-4 { grid-column: 1 / -1; }

@media (max-width: 640px) {
  .about-grid { grid-template-columns: 1fr; }
  .card-1 { grid-row: auto; }
}

/* ===== Brands ===== */
.section-dark { background: var(--ink); color: var(--white); }
.logo-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(18px, 2vw, 32px);
}
.logo-circle {
  width: clamp(96px, 9vw, 140px);
  height: clamp(96px, 9vw, 140px);
  border-radius: 50%;
  background: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(16px, 1.6vw, 26px);
  transition: transform 260ms var(--ease);
}
.logo-circle:hover { transform: scale(1.06); }
.logo-circle img { width: 100%; height: 100%; object-fit: contain; }

/* wordmarks read thinner than badge/icon marks at the same box size,
   so give each logo its own padding until they carry equal visual weight */
.logo-skyeng, .logo-stellary, .logo-getblogger {
  padding-left: clamp(4px, 0.5vw, 8px);
  padding-right: clamp(4px, 0.5vw, 8px);
}
.logo-chitai-gorod {
  padding-left: clamp(9px, 1vw, 15px);
  padding-right: clamp(9px, 1vw, 15px);
}
.logo-geely,
.logo-belgee {
  padding: clamp(22px, 2.2vw, 32px);
}

@media (max-width: 480px) {
  .logo-cloud { gap: 16px; }
  .logo-circle { width: calc(50% - 8px); height: auto; aspect-ratio: 1 / 1; }
}

/* ===== Results ===== */
.results-stack { display: flex; flex-direction: column; gap: 24px; }
.result-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 3vw, 52px);
}
.result-card h3 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.5rem, 0.8vw + 1.3rem, 2rem);
  margin: 0 0 clamp(20px, 2vw, 32px);
}

.result-card-accent { background: var(--red); color: var(--white); border-color: var(--red); }
.result-card-accent .stat-num { color: var(--white); }
.result-card-accent .stat-cap { color: rgba(255,255,255,0.85); }

/* red background, black headline/numbers, white supporting text */
.result-card-red { background: var(--red); color: var(--ink); border-color: var(--red); }
.result-card-red h3 { color: var(--white); font-weight: 700; }
.result-card-red .stat-num {
  color: var(--white);
  font-weight: 700;
  font-size: clamp(2rem, 0.9rem + 2.5vw, 3.25rem);
  white-space: nowrap;
}
.result-card-red .stat-cap { color: var(--white); }

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: clamp(20px, 2.4vw, 40px);
}
.stat-num {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-stat);
  line-height: 1;
  color: var(--red);
  margin: 0 0 10px;
}
.stat-cap { margin: 0; color: rgba(23, 23, 23, 0.75); font-size: clamp(0.9375rem, 0.2vw + 0.9rem, 1rem); }

.sub-project {
  margin-top: clamp(28px, 2.4vw, 40px);
  padding-top: clamp(28px, 2.4vw, 40px);
  border-top: 1px solid var(--border);
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 24px;
  align-items: center;
}
.sub-project-thumb {
  width: 140px;
  height: 140px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--ink);
}
.sub-project-thumb img { width: 100%; height: 100%; object-fit: cover; }
.sub-project-body h4 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(1.125rem, 0.4vw + 1rem, 1.375rem);
  margin: 0 0 8px;
}
.sub-project-body p { margin: 0 0 14px; color: rgba(23, 23, 23, 0.75); }
.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--red);
  border-bottom: 1.5px solid transparent;
  transition: border-color 200ms var(--ease), gap 200ms var(--ease);
}
.link-arrow:hover { border-color: var(--red); gap: 10px; }

.naruzhka-block { margin-top: clamp(24px, 2vw, 36px); }
.naruzhka-block p { color: rgba(23, 23, 23, 0.75); margin: 0 0 16px; }
.naruzhka-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.naruzhka-grid img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

@media (max-width: 640px) {
  .sub-project { grid-template-columns: 1fr; }
  .sub-project-thumb { width: 100%; height: 200px; }
  .naruzhka-grid { grid-template-columns: 1fr; }
}

/* ===== Certificate ===== */
.certificate-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  align-items: start;
  gap: 28px;
  max-width: 1040px;
  margin: 0 auto;
}
.certificate-card {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 260ms var(--ease), border-color 260ms var(--ease);
}
.certificate-card:hover { transform: translateY(-4px); border-color: rgba(23,23,23,0.3); }
.certificate-card img {
  width: 100%;
  height: auto;
  display: block;
}

.certificate-others {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

/* gentle stagger so the mini-grid reads as arranged, not aligned */
.certificate-others .certificate-card:nth-child(2) { margin-top: 22px; }
.certificate-others .certificate-card:nth-child(4) { margin-top: 22px; }

@media (max-width: 860px) {
  .certificate-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .certificate-others { grid-template-columns: 1fr; }
  .certificate-others .certificate-card:nth-child(n) { margin-top: 0; }
}

/* ===== Contacts ===== */
.contacts-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(32px, 4vw, 64px);
  align-items: center;
}
.contacts-text p { color: rgba(255,255,255,0.78); max-width: 52ch; margin: 0 0 32px; }
.contacts-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.contacts-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  background: var(--bg-warm-gray);
}
.contacts-photo img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 15%; }

@media (max-width: 860px) {
  .contacts-grid { grid-template-columns: 1fr; }
  .contacts-photo { order: 2; max-width: 420px; margin: 0 auto; }
}

/* ===== Footer ===== */
footer.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.6);
  padding: 32px 0 40px;
  font-size: 14px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
footer.site-footer strong { display: block; color: var(--white); font-family: var(--font-head); font-weight: 600; font-size: 16px; margin-bottom: 4px; }

/* ===== Mobile section rhythm ===== */
@media (max-width: 640px) {
  section { padding: clamp(64px, 14vw, 80px) 0; }
}