/* Palette seed: МІКЛУХО-МАКЛАЙ → hue 4 */
:root {
  --bg: hsl(224, 32%, 6%);
  --text: hsl(224, 20%, 96%);
  --panel: color-mix(in srgb, var(--bg) 72%, hsl(224, 22%, 18%));
  --muted: color-mix(in srgb, var(--text) 62%, transparent);
  --line: color-mix(in srgb, var(--text) 14%, transparent);
  --accent: hsl(4, 80%, 62%);
  --accent-two: hsl(93, 72%, 52%);
  --accent-glow: color-mix(in srgb, var(--accent) 20%, transparent);
  --accent-two-glow: color-mix(in srgb, var(--accent-two) 18%, transparent);
  --radius: 1rem;
  --radius-lg: 1.5rem;
  --header-h: 4.25rem;
  --max-w: 72rem;
  --font: "Manrope", system-ui, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body.grid {
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 18% 12%, var(--accent-glow), transparent 55%),
    radial-gradient(circle at 82% 4%, var(--accent-two-glow), transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
}

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

img {
  max-width: 100%;
  display: block;
}

button,
input,
textarea {
  font: inherit;
  color: inherit;
}

/* Header */
.header {
  position: sticky;
  top: 1rem;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  max-width: var(--max-w);
  width: calc(100% - 2rem);
  margin: 0 auto;
  padding: 0.625rem 0.625rem 0.625rem 1.25rem;
  background: color-mix(in srgb, var(--panel) 75%, transparent);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 700;
  font-size: 0.9375rem;
  white-space: nowrap;
}

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  color: var(--bg);
  font-weight: 800;
  font-size: 1rem;
}

.logo-name {
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  padding: 0.5rem 0.875rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}

.nav a:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--text) 6%, transparent);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-toggle {
  padding: 0.4375rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}

.lang-toggle:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0.5rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}

.menu-btn span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

body.menu-open .menu-btn span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

body.menu-open .menu-btn span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* Main layout */
main {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  padding: 2rem 1rem 4rem;
}

main > section {
  padding: 4rem 0;
}

main > section + section {
  border-top: 1px solid var(--line);
}

.section-head {
  margin-bottom: 2.5rem;
}

.section-head h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.section-head p {
  margin-top: 0.75rem;
  color: var(--muted);
  max-width: 36rem;
}

/* Hero */
.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3rem;
  align-items: center;
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.tag {
  display: inline-block;
  margin-bottom: 1.25rem;
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.hero-text {
  color: var(--muted);
  font-size: 1.0625rem;
  max-width: 34rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8125rem 1.5rem;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  color: var(--bg);
  box-shadow: 0 4px 24px color-mix(in srgb, var(--accent) 35%, transparent);
}

.btn.primary:hover {
  box-shadow: 0 6px 32px color-mix(in srgb, var(--accent) 45%, transparent);
}

.btn.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn.secondary:hover {
  border-color: color-mix(in srgb, var(--accent-two) 50%, var(--line));
  background: color-mix(in srgb, var(--accent-two) 8%, transparent);
}

.hero-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  padding: 3rem 2rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transform: rotate(2deg);
  box-shadow:
    0 24px 48px color-mix(in srgb, var(--bg) 60%, transparent),
    inset 0 1px 0 color-mix(in srgb, var(--text) 8%, transparent);
}

.hero-card-letter {
  font-size: clamp(4rem, 10vw, 6rem);
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--accent), var(--accent-two));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-card-words {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* Profile */
.profile-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.profile-meta {
  padding: 1.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.meta-label {
  font-weight: 700;
  font-size: 1.0625rem;
  margin-bottom: 0.5rem;
}

.meta-city {
  color: var(--muted);
  font-size: 0.9375rem;
}

.profile-text {
  color: var(--muted);
  font-size: 1.0625rem;
  line-height: 1.75;
}

/* Areas */
.areas-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.area-card {
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 0.2s, transform 0.2s;
}

.area-card:nth-child(2n) {
  background: color-mix(in srgb, var(--panel) 70%, var(--accent) 30%);
}

.area-card:hover {
  border-color: color-mix(in srgb, var(--accent) 40%, var(--line));
  transform: translateY(-2px);
}

.area-num {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.area-card h3 {
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.625rem;
}

.area-card p {
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: 1.55;
}

/* Process */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.step {
  padding: 1.75rem 1.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-two));
  opacity: 0.6;
}

.step-num {
  display: block;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-two);
  margin-bottom: 0.875rem;
}

.step h3 {
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.55;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.contact-form {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.75rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  margin-top: 1rem;
}

.info-item {
  padding: 1.25rem 1.5rem;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.info-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 0.375rem;
}

.info-item a {
  font-weight: 600;
  color: var(--accent);
  transition: color 0.2s;
}

.info-item a:hover {
  color: var(--accent-two);
}

.info-item p {
  font-weight: 500;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.contact-form label span {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--muted);
}

.contact-form input,
.contact-form textarea {
  padding: 0.75rem 1rem;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) - 0.25rem);
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
}

.contact-form .btn {
  align-self: flex-start;
  margin-top: 0.25rem;
}

/* Footer */
.footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 1.5rem 1rem 2.5rem;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted);
}

/* Breakpoints */
@media (max-width: 980px) {
  .menu-btn {
    display: flex;
  }

  .nav {
    position: fixed;
    top: calc(var(--header-h) + 1.5rem);
    left: 1rem;
    right: 1rem;
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.5rem);
    transition: opacity 0.25s, visibility 0.25s, transform 0.25s;
  }

  body.menu-open .nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav a {
    padding: 0.75rem 1rem;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero-card {
    max-width: 20rem;
    margin: 0 auto;
  }

  .profile-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

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

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

  .contact-form {
    margin-top: 0;
  }
}

@media (max-width: 620px) {
  .header {
    top: 0.5rem;
    width: calc(100% - 1rem);
  }

  .logo-name {
    font-size: 0.8125rem;
  }

  main {
    padding: 1rem 0.75rem 3rem;
  }

  main > section {
    padding: 2.5rem 0;
  }

  .areas-grid,
  .steps {
    grid-template-columns: 1fr;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }
}