:root {
  --color-white: #ffffff;
  --color-light: #f5f5f5;
  --color-primary: #003d82;
  --color-primary-light: #1e5a96;
  --color-text: #1a1a1a;
  --color-muted: #5f6f7c;
  --color-border: #dfe5eb;
  --color-success: #166534;
  --color-error: #b42318;

  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container-width: 1120px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.08);

  --transition: 180ms ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-white);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

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

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

a:hover {
  color: var(--color-primary-light);
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(100% - 40px, var(--container-width));
  margin-inline: auto;
}

.section {
  padding: 96px 0;
}

.section-muted {
  background: var(--color-light);
}

.section-label,
.eyebrow {
  margin: 0 0 12px;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--color-text);
  line-height: 1.15;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.35rem, 6vw, 4.75rem);
  letter-spacing: -0.055em;
}

h2 {
  max-width: 760px;
  font-size: clamp(1.85rem, 3vw, 3rem);
  letter-spacing: -0.035em;
}

h3 {
  font-size: 1.18rem;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

.skip-link {
  position: absolute;
  top: -60px;
  left: 16px;
  z-index: 999;
  padding: 10px 14px;
  color: var(--color-white);
  background: var(--color-primary);
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  top: 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid rgba(223, 229, 235, 0.85);
  backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  color: var(--color-primary);
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.main-nav a {
  color: var(--color-muted);
  font-weight: 650;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--color-text);
  border-radius: 999px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  background:
    radial-gradient(circle at top right, rgba(30, 90, 150, 0.12), transparent 34%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.8fr);
  align-items: center;
  gap: 56px;
}

.hero-text {
  max-width: 680px;
  margin-top: 24px;
  color: var(--color-muted);
  font-size: clamp(1.05rem, 2vw, 1.22rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 750;
  line-height: 1;
  transition:
    transform var(--transition),
    background var(--transition),
    color var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

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

.button-primary {
  color: var(--color-white);
  background: var(--color-primary);
  box-shadow: 0 12px 24px rgba(0, 61, 130, 0.22);
}

.button-primary:hover,
.button-primary:focus {
  color: var(--color-white);
  background: var(--color-primary-light);
}

.button-secondary {
  color: var(--color-primary);
  background: var(--color-white);
  border-color: var(--color-border);
}

.button-secondary:hover,
.button-secondary:focus {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.06);
}

.hero-card {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.hero-card h2 {
  font-size: 1.25rem;
}

.profile-list {
  display: grid;
  gap: 18px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.profile-list li {
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.profile-list span {
  display: block;
  margin-bottom: 4px;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.profile-list strong {
  display: block;
  color: var(--color-text);
  font-size: 1rem;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(260px, 0.8fr) minmax(0, 1.2fr);
  gap: 64px;
}

.content-block {
  color: var(--color-muted);
  font-size: 1.05rem;
}

.content-block p + p {
  margin-top: 18px;
}

.about-points {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.about-points article {
  padding: 24px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.about-points h3 {
  margin-bottom: 8px;
  color: var(--color-text);
}

.section-heading {
  margin-bottom: 42px;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.project-card {
  min-height: 100%;
  padding: 26px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition:
    transform var(--transition),
    border-color var(--transition),
    box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 61, 130, 0.35);
  box-shadow: var(--shadow-soft);
}

.project-meta {
  display: inline-flex;
  margin-bottom: 16px;
  padding: 5px 10px;
  color: var(--color-primary);
  background: rgba(0, 61, 130, 0.08);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.project-card p {
  margin-top: 12px;
  color: var(--color-muted);
}

.project-card ul {
  display: grid;
  gap: 7px;
  margin: 18px 0 0;
  padding-left: 18px;
  color: var(--color-muted);
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.skills-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 9px 14px;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-weight: 650;
  transition:
    transform var(--transition),
    border-color var(--transition),
    color var(--transition);
}

.skills-grid span:hover {
  transform: translateY(-2px);
  color: var(--color-primary);
  border-color: rgba(0, 61, 130, 0.35);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  gap: 64px;
  align-items: start;
}

.contact-text {
  max-width: 540px;
  margin-top: 18px;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.contact-details {
  display: grid;
  gap: 8px;
  margin-top: 28px;
  color: var(--color-muted);
}

.contact-details strong {
  color: var(--color-text);
}

.contact-details a {
  color: var(--color-primary);
  font-weight: 700;
}

.contact-form {
  padding: 30px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.form-intro {
  margin: 0 0 22px;
  color: var(--color-muted);
  font-size: 0.98rem;
}

.form-intro a {
  color: var(--color-primary);
  font-weight: 750;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.form-row {
  display: grid;
  gap: 7px;
  margin-bottom: 18px;
}

label {
  color: var(--color-text);
  font-weight: 750;
}

input,
textarea {
  width: 100%;
  padding: 13px 14px;
  color: var(--color-text);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  outline: none;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

textarea {
  resize: vertical;
  min-height: 150px;
}

input:focus,
textarea:focus {
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 4px rgba(30, 90, 150, 0.13);
}

input.is-invalid,
textarea.is-invalid {
  border-color: var(--color-error);
}

.field-error {
  min-height: 18px;
  color: var(--color-error);
  font-size: 0.86rem;
}

.honeypot {
  position: absolute;
  left: -9999px;
  visibility: hidden;
}

.form-button {
  width: 100%;
  margin-top: 4px;
}

.form-button:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
}

.form-status {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.95rem;
  line-height: 1.5;
}

.form-status[hidden] {
  display: none;
}

.form-status-icon {
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 800;
}

.form-status-content {
  display: grid;
  gap: 2px;
}

.form-status-title {
  font-weight: 800;
}

.form-status-message {
  color: inherit;
}

.form-status.is-success {
  color: var(--color-success);
  background: #f0fdf4;
  border-color: #bbf7d0;
}

.form-status.is-success .form-status-icon {
  color: #ffffff;
  background: var(--color-success);
}

.form-status.is-error {
  color: var(--color-error);
  background: #fef2f2;
  border-color: #fecaca;
}

.form-status.is-error .form-status-icon {
  color: #ffffff;
  background: var(--color-error);
}

.site-footer {
  padding: 34px 0;
  color: var(--color-muted);
  background: #f8fafc;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links a {
  font-weight: 650;
}

.legal-page {
  background: var(--color-white);
}

.legal-hero {
  padding: 78px 0 44px;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--color-border);
}

.legal-hero p {
  max-width: 720px;
  margin-top: 18px;
  color: var(--color-muted);
  font-size: 1.06rem;
}

.legal-content {
  display: grid;
  gap: 34px;
  max-width: 820px;
  padding: 56px 0 86px;
}

.legal-content section {
  display: grid;
  gap: 12px;
}

.legal-content h2 {
  font-size: 1.35rem;
  letter-spacing: -0.02em;
}

.legal-content h3 {
  margin-top: 8px;
}

.legal-content p,
.legal-content li {
  color: var(--color-muted);
}

.legal-content a {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.legal-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.legal-address {
  color: var(--color-muted);
  font-style: normal;
}

@media (max-width: 960px) {
  .section {
    padding: 76px 0;
  }

  .hero-grid,
  .two-column,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: auto;
  }

  .hero-card {
    max-width: 560px;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 28px, var(--container-width));
  }

  .header-inner {
    min-height: 68px;
  }

  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    display: none;
    padding: 12px 14px 18px;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav.is-open {
    display: block;
  }

  .main-nav ul {
    display: grid;
    gap: 4px;
  }

  .main-nav a {
    display: block;
    padding: 12px 10px;
    border-radius: var(--radius-sm);
  }

  .main-nav a:hover,
  .main-nav a:focus {
    background: var(--color-light);
  }

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button {
    width: 100%;
  }

  .contact-form {
    padding: 22px;
  }

  .legal-hero {
    padding: 58px 0 34px;
  }

  .legal-content {
    padding: 42px 0 68px;
  }

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 62px 0;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero-card,
  .project-card,
  .about-points article,
  .contact-form {
    border-radius: 14px;
  }

  .skills-grid span {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition: none !important;
  }
}