:root {
  --bg: #0b1020;
  --bg-soft: #121a30;
  --surface: rgba(255, 255, 255, 0.06);
  --surface-strong: rgba(255, 255, 255, 0.1);
  --border: rgba(255, 255, 255, 0.12);
  --text: #edf2ff;
  --muted: #a9b4d0;
  --accent: #7c9cff;
  --accent-strong: #9eb3ff;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.25);
  --radius: 20px;
  --max-width: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(124, 156, 255, 0.18), transparent 35%),
    radial-gradient(circle at top right, rgba(0, 214, 201, 0.12), transparent 30%),
    linear-gradient(180deg, #0a0f1e 0%, #0d1326 100%);
  min-height: 100vh;
}

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

.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.narrow {
  width: min(860px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  background: rgba(7, 11, 24, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 20px;
}

.logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.nav {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.nav a {
  color: var(--muted);
  padding: 10px 14px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.nav-button {
  border: 1px solid rgba(124, 156, 255, 0.35);
}

.hero,
.page-hero {
  padding: 84px 0 56px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.eyebrow {
  color: var(--accent-strong);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
  margin: 0 0 14px;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  line-height: 1.06;
  margin: 0 0 20px;
  letter-spacing: -0.04em;
  max-width: 14ch;
}

h2 {
  margin-top: 0;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}

h3 {
  margin-top: 0;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.hero-text,
.page-text,
.card p,
.blog-post p,
.contact-note p {
  color: var(--muted);
  line-height: 1.75;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #5eead4);
  color: #08101f;
}

.btn-secondary {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.section {
  padding: 12px 0 56px;
}

.section-alt {
  padding-top: 24px;
  padding-bottom: 80px;
}

.section-heading {
  margin-bottom: 24px;
}

.section-grid,
.feature-grid,
.blog-list {
  display: grid;
  gap: 20px;
}

.section-grid {
  grid-template-columns: repeat(3, 1fr);
}

.single-column {
  grid-template-columns: 1fr;
}

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

.blog-list {
  grid-template-columns: 1fr;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.intro-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.text-link {
  color: var(--accent-strong);
  font-weight: 600;
}

.cv-card,
.writing-card,
.contact-note {
  margin-top: 22px;
}

.post-label {
  margin: 0 0 10px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-strong);
}

.contact-form {
  margin-top: 24px;
  display: grid;
  gap: 18px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.form-group {
  display: grid;
  gap: 8px;
}

label {
  font-weight: 600;
  color: var(--text);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  font: inherit;
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
  outline: none;
}

input:focus,
textarea:focus {
  border-color: rgba(124, 156, 255, 0.75);
  box-shadow: 0 0 0 4px rgba(124, 156, 255, 0.12);
}

.page-main {
  padding-bottom: 60px;
}

@media (max-width: 900px) {
  .hero-grid,
  .section-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .nav-container {
    align-items: flex-start;
    padding: 16px 0;
    flex-direction: column;
  }

  h1 {
    max-width: none;
  }
}

@media (max-width: 560px) {
  .container,
  .narrow {
    width: min(100% - 24px, var(--max-width));
  }

  .hero,
  .page-hero {
    padding-top: 60px;
  }

  .card,
  .contact-form {
    padding: 20px;
  }

  .nav {
    gap: 8px;
  }

  .nav a {
    padding: 9px 12px;
  }
}