:root {
  color-scheme: light dark;
  --ink: #17202a;
  --muted: #637083;
  --line: #d8dee8;
  --paper: #fbfcfe;
  --panel: #ffffff;
  --panel-soft: #f7fafc;
  --header-bg: rgba(251, 252, 254, 0.88);
  --header-line: rgba(216, 222, 232, 0.76);
  --body-gradient-start: rgba(241, 246, 250, 0.95);
  --body-gradient-end: rgba(251, 252, 254, 1);
  --text-soft: #3f4d5f;
  --text-project: #445165;
  --nav-hover: #eef3f7;
  --tag-bg: #eef3f7;
  --tag-line: #dce4ee;
  --tag-text: #213044;
  --button-on-ink: #ffffff;
  --logo-text: #ffffff;
  --frame-bar: #f1f5f9;
  --dot: #9aa7b6;
  --sidebar-bg: #f8fafc;
  --sidebar-line: #dbe4ef;
  --card-gradient: linear-gradient(145deg, #ffffff, #f1f6f8);
  --accent: #0f766e;
  --accent-2: #b42318;
  --gold: #b7791f;
  --blue: #2457a6;
  --green: #2f855a;
  --shadow: 0 18px 55px rgba(17, 28, 45, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    linear-gradient(180deg, var(--body-gradient-start), var(--body-gradient-end) 34%),
    var(--paper);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-line);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark,
.project-logo {
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 44px;
  height: 44px;
  color: var(--logo-text);
  background: var(--ink);
  border-radius: 8px;
}

.brand small {
  display: block;
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav a {
  padding: 10px 12px;
  color: var(--muted);
  border-radius: 6px;
  font-size: 14px;
  font-weight: 700;
}

.nav a:hover {
  color: var(--ink);
  background: var(--nav-hover);
}

.theme-switcher {
  display: inline-grid;
  grid-template-columns: repeat(2, 34px);
  gap: 3px;
  padding: 4px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.theme-switcher button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 6px;
  cursor: pointer;
}

.theme-switcher svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.theme-switcher button:hover,
.theme-switcher button.is-active {
  color: var(--button-on-ink);
  background: var(--ink);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 560px);
  grid-template-areas:
    "copy visual"
    "metrics metrics";
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
  min-height: calc(100vh - 76px);
  padding: clamp(48px, 7vw, 92px) clamp(18px, 4vw, 56px) 34px;
}

.hero-copy {
  grid-area: copy;
  max-width: 810px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 940px;
  margin-bottom: 22px;
  font-size: clamp(42px, 6.8vw, 78px);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 14px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.06;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 12px;
  font-size: 23px;
  line-height: 1.15;
  letter-spacing: 0;
}

.lead {
  max-width: 780px;
  color: var(--text-soft);
  font-size: clamp(18px, 2.2vw, 22px);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 13px 18px;
  border-radius: 7px;
  font-weight: 800;
}

.button.primary {
  color: var(--button-on-ink);
  background: var(--ink);
}

.button.secondary {
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
}

.hero-visual {
  grid-area: visual;
}

.browser-frame {
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.browser-bar {
  display: flex;
  gap: 8px;
  padding: 14px;
  background: var(--frame-bar);
  border-bottom: 1px solid var(--line);
}

.browser-bar span {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--dot);
}

.dashboard {
  display: grid;
  grid-template-columns: 28% 1fr;
  min-height: 410px;
}

.dash-sidebar {
  background:
    linear-gradient(#223042 0 0) 24px 32px / 62% 12px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 78px / 52% 9px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 112px / 68% 9px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 146px / 46% 9px no-repeat,
    var(--sidebar-bg);
  border-right: 1px solid var(--line);
}

.dash-main {
  padding: 34px;
}

.dash-line {
  height: 16px;
  background: var(--ink);
  border-radius: 999px;
}

.dash-line.wide {
  width: 72%;
}

.dash-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 28px 0;
}

.dash-grid div {
  height: 92px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card-gradient);
}

.dash-chart {
  display: flex;
  align-items: end;
  gap: 16px;
  height: 150px;
  padding: 18px;
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.dash-chart span {
  flex: 1;
  min-width: 20px;
  background: linear-gradient(180deg, var(--accent), #83c5be);
  border-radius: 6px 6px 0 0;
}

.hero-metrics {
  grid-area: metrics;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.hero-metrics article {
  padding: 22px;
  background: var(--panel);
}

.hero-metrics strong {
  display: block;
  margin-bottom: 4px;
  font-size: 24px;
}

.hero-metrics span,
.project-topline,
.impact-list,
.case-points p,
.skills-grid p,
.approach-grid p,
.fit-list,
.intro p,
.contact-section p {
  color: var(--muted);
}

.section {
  padding: clamp(54px, 8vw, 96px) clamp(18px, 4vw, 56px);
}

.intro,
.fit-section,
.contact-section {
  display: grid;
  grid-template-columns: minmax(240px, 0.78fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: start;
  border-top: 1px solid var(--line);
}

.intro p,
.fit-section p,
.contact-section p {
  font-size: 17px;
  line-height: 1.75;
}

.rate-note {
  margin-top: 18px;
  padding: 14px 16px;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-weight: 700;
}

.section-heading {
  max-width: 800px;
  margin-bottom: 34px;
}

.project-list {
  display: grid;
  gap: 18px;
}

.project-divider {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 16px 0 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.project-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--line);
}

.project-card {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 22px rgba(17, 28, 45, 0.05);
}

.project-card.featured {
  border-color: rgba(15, 118, 110, 0.34);
  box-shadow: var(--shadow);
}

.project-media {
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 28px;
  background: #eef3f7;
}

.project-media.fiscal { background: linear-gradient(135deg, #dff4ef, #e7effa); }
.project-media.commerce { background: linear-gradient(135deg, #f3e8ff, #edf6ff); }
.project-media.retail { background: linear-gradient(135deg, #e8f5e9, #fff7e6); }
.project-media.public { background: linear-gradient(135deg, #e5eefb, #f7f9fc); }
.project-media.security { background: linear-gradient(135deg, #eef2f7, #ffecea); }
.project-media.warehouse { background: linear-gradient(135deg, #edf7f2, #f3f6fb); }
.project-media.lottery { background: linear-gradient(135deg, #fff3d7, #edf5ff); }
.project-media.messaging { background: linear-gradient(135deg, #dcfce7, #e8f5ff); }
.project-media.vostok { background: linear-gradient(135deg, #e0f2fe, #f2e8ff); }

.project-logo {
  width: 124px;
  height: 124px;
  color: var(--logo-text);
  background: var(--ink);
  border-radius: 24px;
  font-size: 34px;
  box-shadow: 0 14px 38px rgba(23, 32, 42, 0.2);
}

.project-content {
  padding: clamp(24px, 4vw, 38px);
}

.project-topline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-bottom: 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status {
  color: var(--accent);
}

.project-content > p {
  max-width: 920px;
  color: var(--text-project);
  font-size: 16px;
  line-height: 1.65;
}

.impact-list {
  display: grid;
  gap: 8px;
  margin: 18px 0 20px;
  padding-left: 20px;
  line-height: 1.55;
}

.case-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 20px 0 22px;
}

.case-points article {
  padding: 4px 14px;
  border-left: 2px solid var(--line);
}

.case-points strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.case-points p {
  margin: 0;
  font-size: 14px;
  line-height: 1.55;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 10px;
  color: var(--tag-text);
  background: var(--tag-bg);
  border: 1px solid var(--tag-line);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.approach-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.approach-grid article {
  min-height: 210px;
  padding: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.approach-grid h3 {
  font-size: 18px;
}

.approach-grid p {
  line-height: 1.65;
}

.skills-grid article {
  min-height: 190px;
  padding: 26px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.skills-grid h3 {
  font-size: 18px;
}

.skills-grid p {
  line-height: 1.65;
}

.fit-list {
  display: grid;
  gap: 14px;
}

.fit-list p {
  margin: 0;
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.contact-panel {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 76px;
  padding: 14px;
  color: var(--ink);
  background: var(--panel-soft);
  border: 1px solid var(--line);
  border-radius: 7px;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
}

.contact-link:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}

.contact-link.whatsapp-link {
  grid-column: 1 / -1;
  color: #062b1d;
  background: linear-gradient(135deg, #d9fbe7, #b9f3ce);
  border-color: rgba(15, 118, 110, 0.24);
}

.contact-icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  color: var(--button-on-ink);
  background: var(--ink);
  border-radius: 8px;
}

.whatsapp-link .contact-icon {
  color: #d9fbe7;
  background: #128c7e;
}

.contact-icon svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.contact-link strong,
.contact-link small {
  display: block;
}

.contact-link strong {
  margin-bottom: 3px;
  font-size: 15px;
}

.contact-link small {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.whatsapp-link small {
  color: rgba(6, 43, 29, 0.72);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 26px clamp(18px, 4vw, 56px);
  color: var(--button-on-ink);
  background: var(--ink);
  font-size: 14px;
}

:root[data-theme="dark"] {
  --ink: #edf3f8;
  --muted: #a9b6c7;
  --line: #2d3a4c;
  --paper: #0e141b;
  --panel: #151d27;
  --panel-soft: #101821;
  --header-bg: rgba(14, 20, 27, 0.9);
  --header-line: rgba(45, 58, 76, 0.84);
  --body-gradient-start: rgba(21, 29, 39, 0.96);
  --body-gradient-end: rgba(14, 20, 27, 1);
  --text-soft: #c5ceda;
  --text-project: #c3ccd8;
  --nav-hover: #1d2936;
  --tag-bg: #1d2936;
  --tag-line: #344255;
  --tag-text: #dce6f2;
  --button-on-ink: #0e141b;
  --logo-text: #0e141b;
  --frame-bar: #111923;
  --dot: #627083;
  --sidebar-bg: #101821;
  --sidebar-line: #354357;
  --card-gradient: linear-gradient(145deg, #17212c, #111923);
  --accent: #5eead4;
  --accent-2: #f97373;
  --shadow: 0 18px 55px rgba(0, 0, 0, 0.38);
}

:root[data-theme="dark"] .dash-sidebar {
  background:
    linear-gradient(#dce6f2 0 0) 24px 32px / 62% 12px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 78px / 52% 9px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 112px / 68% 9px no-repeat,
    linear-gradient(var(--sidebar-line) 0 0) 24px 146px / 46% 9px no-repeat,
    var(--sidebar-bg);
}

:root[data-theme="dark"] .project-media.fiscal { background: linear-gradient(135deg, #12332f, #16263d); }
:root[data-theme="dark"] .project-media.commerce { background: linear-gradient(135deg, #2c1f3d, #142538); }
:root[data-theme="dark"] .project-media.retail { background: linear-gradient(135deg, #173326, #3a2b13); }
:root[data-theme="dark"] .project-media.public { background: linear-gradient(135deg, #14243a, #171f2b); }
:root[data-theme="dark"] .project-media.security { background: linear-gradient(135deg, #1e2734, #3a1d1b); }
:root[data-theme="dark"] .project-media.warehouse { background: linear-gradient(135deg, #153127, #1b2635); }
:root[data-theme="dark"] .project-media.lottery { background: linear-gradient(135deg, #3a2a11, #16283f); }
:root[data-theme="dark"] .project-media.messaging { background: linear-gradient(135deg, #123326, #12293d); }
:root[data-theme="dark"] .project-media.vostok { background: linear-gradient(135deg, #12314a, #2b1d3a); }

:root[data-theme="dark"] .contact-link.whatsapp-link {
  color: #e9fff1;
  background: linear-gradient(135deg, #0f513b, #106b55);
  border-color: rgba(94, 234, 212, 0.24);
}

:root[data-theme="dark"] .whatsapp-link small {
  color: rgba(233, 255, 241, 0.76);
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="system"] {
    --ink: #edf3f8;
    --muted: #a9b6c7;
    --line: #2d3a4c;
    --paper: #0e141b;
    --panel: #151d27;
    --panel-soft: #101821;
    --header-bg: rgba(14, 20, 27, 0.9);
    --header-line: rgba(45, 58, 76, 0.84);
    --body-gradient-start: rgba(21, 29, 39, 0.96);
    --body-gradient-end: rgba(14, 20, 27, 1);
    --text-soft: #c5ceda;
    --text-project: #c3ccd8;
    --nav-hover: #1d2936;
    --tag-bg: #1d2936;
    --tag-line: #344255;
    --tag-text: #dce6f2;
    --button-on-ink: #0e141b;
    --logo-text: #0e141b;
    --frame-bar: #111923;
    --dot: #627083;
    --sidebar-bg: #101821;
    --sidebar-line: #354357;
    --card-gradient: linear-gradient(145deg, #17212c, #111923);
    --accent: #5eead4;
    --accent-2: #f97373;
    --shadow: 0 18px 55px rgba(0, 0, 0, 0.38);
  }

  :root[data-theme="system"] .dash-sidebar {
    background:
      linear-gradient(#dce6f2 0 0) 24px 32px / 62% 12px no-repeat,
      linear-gradient(var(--sidebar-line) 0 0) 24px 78px / 52% 9px no-repeat,
      linear-gradient(var(--sidebar-line) 0 0) 24px 112px / 68% 9px no-repeat,
      linear-gradient(var(--sidebar-line) 0 0) 24px 146px / 46% 9px no-repeat,
      var(--sidebar-bg);
  }

  :root[data-theme="system"] .project-media.fiscal { background: linear-gradient(135deg, #12332f, #16263d); }
  :root[data-theme="system"] .project-media.commerce { background: linear-gradient(135deg, #2c1f3d, #142538); }
  :root[data-theme="system"] .project-media.retail { background: linear-gradient(135deg, #173326, #3a2b13); }
  :root[data-theme="system"] .project-media.public { background: linear-gradient(135deg, #14243a, #171f2b); }
  :root[data-theme="system"] .project-media.security { background: linear-gradient(135deg, #1e2734, #3a1d1b); }
  :root[data-theme="system"] .project-media.warehouse { background: linear-gradient(135deg, #153127, #1b2635); }
  :root[data-theme="system"] .project-media.lottery { background: linear-gradient(135deg, #3a2a11, #16283f); }
  :root[data-theme="system"] .project-media.messaging { background: linear-gradient(135deg, #123326, #12293d); }
  :root[data-theme="system"] .project-media.vostok { background: linear-gradient(135deg, #12314a, #2b1d3a); }

  :root[data-theme="system"] .contact-link.whatsapp-link {
    color: #e9fff1;
    background: linear-gradient(135deg, #0f513b, #106b55);
    border-color: rgba(94, 234, 212, 0.24);
  }

  :root[data-theme="system"] .whatsapp-link small {
    color: rgba(233, 255, 241, 0.76);
  }
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
    grid-template-areas:
      "copy"
      "visual"
      "metrics";
    min-height: 0;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-media {
    min-height: 220px;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .approach-grid,
  .case-points {
    grid-template-columns: 1fr;
  }

  .intro,
  .fit-section,
  .contact-section {
    grid-template-columns: 1fr;
  }

  .contact-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .site-header {
    position: static;
    align-items: flex-start;
    gap: 14px;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    justify-content: space-between;
    gap: 12px;
  }

  .nav {
    width: auto;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .theme-switcher {
    width: max-content;
  }

  .hero {
    padding-top: 38px;
  }

  h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

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

  .dash-sidebar {
    display: none;
  }

  .dash-main {
    padding: 22px;
  }

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

  .section {
    padding-top: 54px;
    padding-bottom: 54px;
  }
}