:root {
  --bg: #070606;
  --panel: #00072e;
  --border: #0020d8;
  --red: #007ff7;
  --red-light: #a098fa;
  --white: #fffafa;
  --muted: #d8d8e8;

  --max-width: 900px;
  --page-padding: 1rem;
  --content-spacing: 4rem;

  --font: system-ui, sans-serif;
  --mono: monospace;
}

/* ------------------------------
   Global reset
------------------------------ */

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  color: var(--white);
  background: var(--bg);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

a:hover,
a:focus-visible {
  color: var(--white);
  text-decoration: underline;
}

/* ------------------------------
   Shared layout
------------------------------ */

.container {
  width: min(
    calc(100% - (var(--page-padding) * 2)),
    var(--max-width)
  );
  margin-inline: auto;
}

/* ------------------------------
   Header and navigation
------------------------------ */

header {
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  min-height: 70px;
}

.brand {
  flex-shrink: 0;
  color: var(--white);
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand span {
  color: var(--red);
}

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.75rem 1rem;
  font-size: 0.85rem;
}

/* ------------------------------
   Intro section
------------------------------ */

.intro {
  padding: 4rem 0;
}

.intro .eyebrow {
  margin: 0 0 1rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  line-height: 1.5;
  text-transform: uppercase;
}

h1 {
  width: 100%;
  max-width: none;
  margin: 0 0 1rem;
  color: var(--white);
  font-size: clamp(2rem, 10vw, 5.5rem);
  line-height: 1.05;
  letter-spacing: -0.07em;
  white-space: nowrap;
}

h1 span {
  color: var(--red);
}

.intro > .container > p:not(.eyebrow) {
  max-width: 700px;
  margin: 0 0 1rem;
  color: var(--muted);
}

.intro > .container > p:last-child {
  margin-bottom: 0;
}

/* ------------------------------
   Main content
------------------------------ */

main {
  padding-bottom: var(--content-spacing);
}

section {
  border-top: 1px solid var(--border);
}

/* ------------------------------
   Articles
------------------------------ */

#articles {
  padding: 3rem 0;
}

#articles > .container {
  display: grid;
  gap: 3rem;
}

.blog-entry {
  width: 100%;
  margin: 0;
  padding: 1.5rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--red);
}

.blog-meta {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
  text-transform: uppercase;
}

.blog-entry h2 {
  margin: 0.5rem 0 0.75rem;
  line-height: 1.2;
  overflow-wrap: break-word;
}

.blog-entry p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.blog-entry ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
}

.blog-entry li {
  margin-bottom: 0.75rem;
  color: var(--muted);
}

.blog-entry li:last-child {
  margin-bottom: 0;
}

.blog-entry strong {
  color: var(--white);
}

/* ------------------------------
   Read-more controls
------------------------------ */

details {
  margin-top: 1.5rem;
}

summary {
  color: var(--red);
  cursor: pointer;
  font-weight: 600;
}

summary:hover,
summary:focus-visible {
  color: var(--white);
}

/* ------------------------------
   About section
------------------------------ */

#about {
  padding: 3rem 0;
}

#about h2 {
  margin: 0.5rem 0 1rem;
  line-height: 1.2;
}

#about p:not(.eyebrow) {
  max-width: 700px;
  margin: 0;
  color: var(--muted);
}

/* ------------------------------
   Footer
------------------------------ */

footer {
  padding: 2rem 0;
  color: var(--muted);
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
}

footer .container {
  text-align: center;
}

/* ------------------------------
   Mobile layout
------------------------------ */

@media (max-width: 640px) {
  :root {
    --page-padding: 1rem;
    --content-spacing: 3rem;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
    padding: 1rem 0;
  }

  nav {
    justify-content: flex-start;
    gap: 0.75rem;
  }

  .intro {
    padding: 2.5rem 0;
  }

  .intro .eyebrow {
    font-size: 0.68rem;
  }

  h1 {
    font-size: clamp(2rem, 11vw, 4.5rem);
    letter-spacing: -0.08em;
    white-space: nowrap;
  }

  #articles {
    padding: 2rem 0;
  }

  #articles > .container {
    gap: 2rem;
  }

  .blog-entry {
    padding: 1rem;
  }

  .blog-entry h2 {
    font-size: 1.5rem;
  }

  #about {
    padding: 2rem 0;
  }

  main {
    padding-bottom: 3rem;
  }
}

/* ------------------------------
   Very small screens
------------------------------ */

@media (max-width: 360px) {
  h1 {
    font-size: 1.85rem;
    letter-spacing: -0.08em;
  }
}

/* ------------------------------
   Reduced motion
------------------------------ */

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