:root {
  --color-background: #f8f9fb;
  --color-body: #0f172a;
  --color-muted: #475569;
  --color-accent: #2563eb;
  --color-accent-dark: #1d4ed8;
  --color-card: #ffffff;
  --radius-lg: 16px;
  --spacing-unit: 1.25rem;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: inherit;
  color: var(--color-body);
  background-color: var(--color-background);
  line-height: 1.6;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

main {
  display: block;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 var(--spacing-unit);
}

.hero {
  background: radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 45%),
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), rgba(15, 23, 42, 0.05));
  padding: calc(var(--spacing-unit) * 2.5) 0 calc(var(--spacing-unit) * 4);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.site-nav__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-body);
}

.site-nav__links {
  display: flex;
  gap: 1.5rem;
  font-weight: 500;
}

.site-nav__links a {
  color: var(--color-body);
  text-decoration: none;
}

.site-nav__links a:hover {
  color: var(--color-accent);
}

.hero__content {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 700;
}

.hero p {
  margin: 0;
  font-size: 1.125rem;
  color: var(--color-muted);
}

.hero__cta {
  align-self: flex-start;
  background-color: var(--color-accent);
  color: #fff;
  border-radius: 999px;
  padding: 0.85rem 2.5rem;
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.hero__cta:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
  text-decoration: none;
}

.hero__cta:active {
  transform: translateY(0);
}

.services {
  padding: calc(var(--spacing-unit) * 3) 0;
}

.services__lead {
  max-width: 720px;
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.services__lead h2 {
  margin: 0 0 0.75rem;
  font-size: 2rem;
}

.services__lead p {
  margin: 0;
  color: var(--color-muted);
}

.services__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: calc(var(--spacing-unit) * 1.5);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.services__item {
  background-color: var(--color-card);
  border-radius: var(--radius-lg);
  padding: calc(var(--spacing-unit) * 1.6);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
}

.services__item h3 {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
}

.services__item p {
  margin: 0;
  color: var(--color-muted);
}

.contact {
  padding: calc(var(--spacing-unit) * 3) 0;
}

.contact__intro {
  margin-bottom: calc(var(--spacing-unit) * 2);
}

.contact__intro h2 {
  margin: 0;
  font-size: 2rem;
}

.contact__intro p {
  margin: 0.5rem 0 0;
  color: var(--color-muted);
}

.contact__feedback {
  min-height: 3rem;
  display: flex;
  align-items: center;
}

.alert {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  font-weight: 500;
}

.alert--success {
  background-color: #dcfce7;
  color: #166534;
}

.alert--error {
  background-color: #fee2e2;
  color: #b91c1c;
}

.contact__form {
  background-color: var(--color-card);
  padding: calc(var(--spacing-unit) * 2);
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
  display: grid;
  gap: var(--spacing-unit);
}

.field-group {
  display: flex;
  flex-direction: column;
}

.field-group label {
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input,
textarea {
  font: inherit;
  padding: 0.75rem 0.85rem;
  border-radius: 10px;
  border: 1px solid rgba(15, 23, 42, 0.12);
  background-color: #f9fafb;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background-color: #fff;
}

textarea {
  resize: vertical;
  min-height: 160px;
}

.contact__footer {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-start;
}

.required-hint {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-muted);
}

button[type='submit'] {
  background-color: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.85rem 2.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

button[type='submit']:hover {
  background-color: var(--color-accent-dark);
  transform: translateY(-1px);
}

button[type='submit']:active {
  transform: translateY(0);
}

.site-footer {
  padding: calc(var(--spacing-unit) * 2) 0;
  background: #0f172a;
  color: #e2e8f0;
}

.site-footer a {
  color: #cbd5f5;
}

.site-footer__contact {
  margin: 0.5rem 0 0;
  color: #cbd5f5;
  font-style: normal;
}

@media (max-width: 768px) {
  .site-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav__links {
    flex-wrap: wrap;
  }

  .hero__content {
    gap: 1.25rem;
  }

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

  .contact__form {
    padding: calc(var(--spacing-unit) * 1.5);
  }
}