:root {
  --bg: #f4f7fb;
  --bg-alt: #ffffff;
  --text: #111827;
  --muted: #475467;
  --line: #d9e0ea;
  --primary: #1e3a8a;
  --primary-soft: #dbe7ff;
  --black: #0f172a;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
  --container: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Manrope", "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7f9fc 0%, #f2f6fb 100%);
  line-height: 1.55;
  position: relative;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", "Manrope", sans-serif;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.section {
  padding: 5rem 0;
}

.bg-shape {
  position: fixed;
  z-index: -1;
  filter: blur(48px);
  border-radius: 999px;
}

.bg-shape-one {
  width: 360px;
  height: 360px;
  top: -120px;
  right: -90px;
  background: rgba(30, 58, 138, 0.16);
}

.bg-shape-two {
  width: 260px;
  height: 260px;
  left: -80px;
  top: 36%;
  background: rgba(59, 130, 246, 0.14);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  background: rgba(244, 247, 251, 0.9);
  border-bottom: 1px solid rgba(217, 224, 234, 0.75);
}

.nav-wrap {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 0.9rem;
  white-space: nowrap;
}

.logo-mark {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid #d9e2ef;
  background: #fff;
}

.logo-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-alt);
  color: var(--text);
  border-radius: 10px;
  width: 42px;
  height: 42px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.nav-menu a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.25s ease;
}

.nav-menu a:hover {
  color: var(--black);
}

.hero {
  padding: 7rem 0 5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 1.4rem;
  align-items: stretch;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.hero h1 {
  font-size: clamp(2.2rem, 6vw, 4.3rem);
  line-height: 1.02;
}

.hero-subtitle {
  margin: 1rem 0 0;
  max-width: 680px;
  color: #334155;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
}

.hero-pills {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hero-pills span {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid #cfdbec;
  background: #f8fbff;
  font-size: 0.82rem;
  font-weight: 700;
  color: #304154;
}

.hero-actions {
  margin-top: 2rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.hero-card {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

.hero-card-title {
  margin: 0;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-weight: 700;
}

.hero-card ul {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  color: #364152;
}

.hero-card li + li {
  margin-top: 0.75rem;
}

.hero-metrics {
  margin-top: 1.1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.55rem;
}

.hero-metrics div {
  border: 1px solid #d9e4f1;
  background: #f8fbff;
  border-radius: 12px;
  padding: 0.6rem 0.7rem;
}

.hero-metrics strong {
  display: block;
  font-family: "Space Grotesk", "Manrope", sans-serif;
  font-size: 1rem;
}

.hero-metrics span {
  font-size: 0.8rem;
  color: #4b5565;
}

.hero-mini-cards {
  margin-top: 1rem;
  display: grid;
  gap: 0.55rem;
}

.hero-mini-cards > div {
  border: 1px solid #d7e2f0;
  background: #f8fbff;
  border-radius: 11px;
  padding: 0.62rem 0.7rem;
}

.hero-mini-cards p {
  margin: 0;
  color: #607089;
  font-size: 0.8rem;
}

.hero-mini-cards strong {
  font-size: 0.95rem;
}

.section-wrap,
.contacts-wrap {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.1rem, 3vw, 2rem);
  box-shadow: var(--shadow);
}

.section-tag {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--primary);
}

.section h2 {
  margin-top: 0.65rem;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
}

.muted-box {
  margin: 1rem 0 0;
  color: #4b5565;
  background: #f4f8ff;
  border: 1px dashed #c4d6ff;
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.section-head {
  margin-bottom: 1.4rem;
}

.section-sub {
  margin: 0.7rem 0 0;
  color: #4b5565;
  max-width: 760px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  border-radius: var(--radius);
  padding: 1.3rem;
  border: 1px solid var(--line);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 42px rgba(15, 23, 42, 0.12);
}

.card h3 {
  font-size: 1.1rem;
}

.card p {
  margin: 0.65rem 0 0;
  color: #4b5565;
}

.portfolio-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.portfolio-group {
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.portfolio-group h3 {
  font-size: 1.15rem;
  margin-bottom: 0.9rem;
}

.portfolio-card {
  border: 1px dashed #bfd0eb;
  background: #f7faff;
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  font-weight: 600;
  color: #243447;
}

.portfolio-card + .portfolio-card {
  margin-top: 0.65rem;
}

.portfolio-card span {
  display: block;
  margin-top: 0.35rem;
  color: #64748b;
  font-weight: 500;
  font-size: 0.93rem;
}

.contacts-wrap {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 1.2rem;
}

.contact-form {
  display: grid;
  gap: 0.85rem;
}

.contact-form label {
  display: grid;
  gap: 0.45rem;
  font-weight: 600;
  color: #253142;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border: 1px solid #c9d5e4;
  border-radius: 12px;
  padding: 0.78rem 0.9rem;
  font: inherit;
  background: #fff;
  color: #0f172a;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: #4970d8;
  box-shadow: 0 0 0 4px rgba(73, 112, 216, 0.12);
}

.form-status {
  min-height: 1.2em;
  margin: 0;
  font-weight: 600;
  color: #1f4ca5;
}

.btn {
  border: 0;
  border-radius: 999px;
  padding: 0.82rem 1.3rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--black);
  color: #fff;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.18);
}

.btn-outline {
  border: 1px solid #b8c9e2;
  background: #fff;
  color: #1f2a3a;
}

.btn-dark {
  background: var(--black);
  color: #fff !important;
  padding: 0.65rem 1rem;
}

.site-footer {
  border-top: 1px solid #d8e1ec;
  background: #ffffff;
  padding: 1.1rem 0;
}

.footer-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.footer-brand p {
  margin: 0;
  color: #607089;
  font-size: 0.92rem;
}

.footer-links {
  display: flex;
  gap: 1rem;
  color: #44556d;
  font-weight: 600;
}

.portfolio-tags {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.portfolio-tags span {
  border: 1px solid #cfdbec;
  background: #f8fbff;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.82rem;
  font-weight: 700;
  color: #304154;
}

.portfolio-page {
  padding-top: 1.1rem;
}

.portfolio-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1rem;
}

.portfolio-filter-btn {
  border: 1px solid #cfdbec;
  background: #f8fbff;
  color: #304154;
  border-radius: 999px;
  padding: 0.46rem 0.85rem;
  font: inherit;
  font-size: 0.86rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.portfolio-filter-btn:hover,
.portfolio-filter-btn.active {
  background: #111827;
  color: #fff;
  border-color: #111827;
}

.portfolio-grid-new {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
}

.project-card.is-hidden {
  display: none;
}

.project-card {
  border: 1px solid var(--line);
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 42px rgba(15, 23, 42, 0.12);
}

.project-link {
  display: block;
  padding: 1rem;
}

.project-cover {
  height: 220px;
  border-radius: 28px;
  margin-bottom: 0.8rem;
  background-color: #e7ebf1;
  background-size: cover;
  background-position: center;
  border: 1px solid #d6deea;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.16);
}

.cover-1 { background-image: url("../assets/hash.png"); }
.cover-2 { background-image: url("../assets/best-movies-are.png"); }
.cover-3 { background-image: url("../assets/pirogov-forum.png"); }
.cover-4 { background-image: url("../assets/tekhnozona.png"); }
.cover-5 { background-image: url("../assets/exchange-bot.png"); }
.cover-6 { background-image: url("../assets/xavier.png"); }

.project-meta {
  color: #4f6380;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  font-size: 0.74rem;
}

.project-link h3 {
  margin-top: 0.6rem;
  font-size: 1.2rem;
}

.project-link p {
  margin-top: 0.6rem;
  color: #4b5565;
}

.project-cta {
  margin-top: 0.85rem;
  display: inline-block;
  font-weight: 700;
  color: #1e3a8a;
}

.project-page {
  padding-top: 1rem;
}

.project-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
}

.project-main-card,
.project-side-card {
  border: 1px solid var(--line);
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.project-main-card h2 + p {
  margin-top: 0.55rem;
}

.project-main-card h2:not(:first-child) {
  margin-top: 1rem;
}

.project-main-card p {
  color: #4b5565;
}

.project-main-card .btn {
  margin-top: 1rem;
}

.project-side-card ul {
  margin: 0.8rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.project-side-card li {
  border: 1px solid #dce5f2;
  background: #f7faff;
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  color: #2f3d4f;
}

.case-hero {
  padding-bottom: 1rem;
}

.case-hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1rem;
  align-items: stretch;
}

.case-cover {
  min-height: 320px;
  border-radius: 30px;
  border: 1px solid #d6deea;
  box-shadow: var(--shadow);
  background-color: #e7ebf1;
  background-size: cover;
  background-position: center;
}

.case-cover-blue { background-image: url("../assets/hash.png"); }
.case-cover-indigo { background-image: url("../assets/best-movies-are.png"); }
.case-cover-purple { background-image: url("../assets/pirogov-forum.png"); }
.case-cover-green { background-image: url("../assets/tekhnozona.png"); }
.case-cover-cyan { background-image: url("../assets/exchange-bot.png"); }
.case-cover-violet { background-image: url("../assets/xavier.png"); }

.case-actions {
  margin-top: 1.2rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.case-content {
  padding-top: 1rem;
}

.case-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1rem;
}

.case-main {
  display: grid;
  gap: 0.9rem;
}

.case-block {
  border: 1px solid var(--line);
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.case-block p {
  color: #4b5565;
  margin: 0.65rem 0 0;
}

.case-steps {
  margin: 0.7rem 0 0;
  padding-left: 1.1rem;
  color: #334155;
  display: grid;
  gap: 0.6rem;
}

.case-results {
  margin-top: 0.8rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.case-results div {
  border: 1px solid #d9e4f2;
  background: #f8fbff;
  border-radius: 11px;
  padding: 0.7rem;
}

.case-results strong {
  display: block;
  font-family: "Space Grotesk", "Manrope", sans-serif;
  font-size: 1.05rem;
}

.case-results span {
  font-size: 0.82rem;
  color: #4b5565;
}

.case-side {
  display: grid;
  gap: 0.85rem;
  align-content: start;
}

.case-side-card {
  border: 1px solid var(--line);
  background: var(--bg-alt);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.05rem;
}

.case-side-card ul {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.5rem;
}

.case-side-card li {
  border: 1px solid #dce5f2;
  background: #f7faff;
  border-radius: 10px;
  padding: 0.55rem 0.65rem;
  color: #2f3d4f;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .hero-grid,
  .contacts-wrap,
  .portfolio-columns,
  .portfolio-grid-new,
  .project-layout,
  .case-hero-grid,
  .case-grid,
  .case-results {
    grid-template-columns: 1fr;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu {
    position: absolute;
    top: 77px;
    left: 1rem;
    right: 1rem;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 14px;
    box-shadow: var(--shadow);
    padding: 0.8rem;
    display: none;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav-menu.open {
    display: flex;
  }

  .nav-menu .btn {
    width: 100%;
    text-align: center;
  }

  .hero {
    padding-top: 6.2rem;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }
}

.page-hero {
  padding-bottom: 2.2rem;
}

.page-hero h1 {
  font-size: clamp(1.8rem, 5vw, 3.2rem);
  margin-top: 0.5rem;
}

.contact-page {
  padding-top: 1rem;
}

.contact-side p {
  margin-top: 0.8rem;
  color: #4b5565;
}

.contact-points {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
  color: #334155;
}

.contact-points li + li {
  margin-top: 0.6rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.services-page {
  padding-top: 1rem;
}

.service-stack {
  display: grid;
  gap: 1.1rem;
}

.service-block {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 1.2rem;
  padding: 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
}

.service-kicker {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.08em;
}

.service-block h2 {
  margin-top: 0.5rem;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.service-block p {
  margin: 0.7rem 0 0;
  color: #4b5565;
}

.service-block ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.55rem;
}

.service-block li {
  border: 1px solid #dce5f2;
  background: #f7faff;
  color: #2f3d4f;
  border-radius: 10px;
  padding: 0.62rem 0.7rem;
  font-weight: 600;
}

.service-cta {
  padding-top: 2.2rem;
}

@media (max-width: 980px) {
  .form-grid,
  .service-block {
    grid-template-columns: 1fr;
  }
}

.about-page .section {
  padding: 4.2rem 0;
}

.about-page .about-section + .about-section {
  padding-top: 1.4rem;
}

.about-hero {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 1rem;
  align-items: stretch;
}

.about-stat-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.about-stat-card h2 {
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  margin-top: 0.55rem;
}

.about-stat-card ul {
  margin: 0.85rem 0 0;
  padding-left: 1.1rem;
  color: #334155;
}

.about-stat-card li + li {
  margin-top: 0.55rem;
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.about-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.about-card h2 {
  margin-top: 0.55rem;
  font-size: clamp(1.2rem, 2.8vw, 1.7rem);
}

.about-card p {
  margin: 0.75rem 0 0;
  color: #4b5565;
}

.about-skills {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.95rem;
}

.about-skill-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-alt);
  box-shadow: var(--shadow);
  padding: 1.2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.about-skill-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 42px rgba(15, 23, 42, 0.12);
}

.about-skill-card p {
  margin: 0.65rem 0 0;
  color: #4b5565;
}

.about-principles {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.about-principles > div {
  border: 1px solid #dce5f2;
  background: #f7faff;
  border-radius: var(--radius-sm);
  padding: 0.95rem;
}

.about-principles p {
  margin: 0.5rem 0 0;
  color: #4b5565;
}

@media (max-width: 980px) {
  .about-hero,
  .about-grid,
  .about-skills,
  .about-principles {
    grid-template-columns: 1fr;
  }

  .about-page .section {
    padding: 3.2rem 0;
  }
}