@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Space+Grotesk:wght@400;500;600;700&display=swap');

:root {
  --bg: #070a0f;
  --panel: #0c1118;
  --text: #f0f3f5;
  --muted: #9aa5ae;
  --line: #26313b;
  --accent: #66b9e8;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", Arial, sans-serif;
  line-height: 1.65;
}

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

.hero {
  min-height: 100vh;
  padding: 24px 6vw 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 30%, rgba(65, 125, 160, .14), transparent 30%),
    linear-gradient(135deg, #070a0f 0%, #0a1017 55%, #070a0f 100%);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 90%);
}

.hud {
  position: absolute;
  z-index: 2;
  font: 500 11px/1 "IBM Plex Mono", monospace;
  letter-spacing: .18em;
  color: var(--muted);
}

.hud-top { top: 24px; right: 6vw; }

nav {
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line);
  padding-bottom: 18px;
}

.brand {
  font: 600 14px/1 "IBM Plex Mono", monospace;
  letter-spacing: .09em;
}

.nav-links {
  display: flex;
  gap: 28px;
  font: 400 11px/1 "IBM Plex Mono", monospace;
  letter-spacing: .12em;
  color: var(--muted);
}

.nav-links a:hover, .brand:hover { color: var(--text); }

.hero-content {
  z-index: 2;
  max-width: 850px;
  padding: 9vh 0;
}

.eyebrow, .section-label {
  font: 500 11px/1.3 "IBM Plex Mono", monospace;
  letter-spacing: .18em;
  color: var(--accent);
  text-transform: uppercase;
}

h1, h2 {
  font-weight: 600;
  letter-spacing: -.045em;
  line-height: 1.02;
  margin: 18px 0 24px;
}

h1 { font-size: clamp(48px, 7vw, 96px); }
h2 { font-size: clamp(40px, 5vw, 68px); }

.lead {
  max-width: 650px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 24px);
}

.button {
  display: inline-flex;
  gap: 20px;
  align-items: center;
  margin-top: 24px;
  padding: 13px 18px;
  border: 1px solid #65717b;
  font: 500 11px/1 "IBM Plex Mono", monospace;
  letter-spacing: .13em;
  transition: .2s ease;
}

.button:hover {
  border-color: var(--accent);
  background: rgba(102,185,232,.08);
}

.hero-meta {
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--muted);
  font: 400 10px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .12em;
}

.section {
  padding: 110px 6vw;
  border-bottom: 1px solid var(--line);
}

.section-label {
  margin-bottom: 60px;
  color: var(--muted);
}

.book-grid, .author-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(260px, 390px) 1fr;
  gap: 9vw;
  align-items: center;
}

.book-placeholder {
  aspect-ratio: 2 / 3;
  background:
    radial-gradient(circle at 50% 38%, rgba(104,184,228,.23), transparent 24%),
    linear-gradient(160deg, #151c24, #080b10);
  border: 1px solid #3b4853;
  box-shadow: 0 30px 80px rgba(0,0,0,.35);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cover-inner {
  width: 78%;
  height: 88%;
  border: 1px solid #56636e;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cover-inner small, .cover-inner span, .cover-inner em {
  font: 500 9px/1.5 "IBM Plex Mono", monospace;
  letter-spacing: .12em;
  color: #aab5bd;
}

.cover-inner strong {
  font-size: clamp(30px, 4vw, 52px);
  line-height: .92;
  letter-spacing: -.06em;
}

.cover-inner em { font-style: normal; }

.book-copy { max-width: 650px; }

.book-copy h2 { margin-bottom: 4px; }

.tagline {
  color: var(--muted);
  font: 400 13px/1.5 "IBM Plex Mono", monospace;
  letter-spacing: .04em;
  margin-bottom: 34px;
}

.book-copy p:not(.eyebrow):not(.tagline) { color: #c5ccd1; }

.closing-line {
  margin: 38px 0 0;
  font-size: 20px;
  color: var(--text) !important;
}

.book-actions {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.release, .small-note, .question-note {
  color: var(--muted);
  font: 400 10px/1.5 "IBM Plex Mono", monospace;
  letter-spacing: .1em;
}

.author-grid {
  grid-template-columns: 1fr 1fr;
  align-items: start;
}

.author-copy {
  max-width: 620px;
  color: #c5ccd1;
  font-size: 18px;
}

.author-copy em { color: var(--text); }

.question-section {
  text-align: center;
  background: var(--panel);
}

.question-section .section-label { text-align: left; }

blockquote {
  max-width: 1000px;
  margin: 0 auto 30px;
  font-size: clamp(34px, 5vw, 68px);
  line-height: 1.08;
  letter-spacing: -.04em;
}

.contact-section {
  max-width: 900px;
}

.contact-section h2 {
  margin-bottom: 16px;
}

.contact-section p {
  color: var(--muted);
}

.email {
  display: inline-block;
  margin: 14px 0;
  font: 500 clamp(18px, 2vw, 24px)/1.4 "IBM Plex Mono", monospace;
  color: var(--accent);
  word-break: break-word;
}

footer {
  padding: 24px 6vw;
  display: flex;
  justify-content: space-between;
  color: #68747e;
  font: 400 9px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .12em;
}

@media (max-width: 720px) {
  .hero { min-height: 90vh; }
  .hud-top { display: none; }
  nav { align-items: flex-start; }
  .nav-links { gap: 12px; flex-direction: column; text-align: right; }
  .hero-meta { flex-direction: column; }
  .section { padding: 80px 7vw; }
  .section-label { margin-bottom: 40px; }
  .book-grid, .author-grid { grid-template-columns: 1fr; gap: 48px; }
  .book-placeholder { max-width: 300px; margin: 0 auto; }
  .author-copy { font-size: 16px; }
  footer { flex-direction: column; gap: 10px; }
}