/* AI Next Wave - dark aurora theme v3 */
:root {
  --ink: #eef2f6;
  --body: #ccd7e2;
  --muted: #93a5b8;
  --line: rgba(255,255,255,0.12);
  --navy: #060e1c;
  --panel: rgba(255,255,255,0.045);
  --cyan: #3fc1e8;
  --cyan-deep: #1899c2;
  --link: #63c9ef;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
* { box-sizing: border-box; }
::selection { background: rgba(63,193,232,0.35); }
html { background: #060e1c; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: transparent;
  color: var(--body);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
}
a { color: var(--link); }
a:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.wrap { max-width: 44rem; margin: 0 auto; padding: 0 1.25rem; }

/* Animated aurora background */
.aurora { position: fixed; inset: 0; z-index: -1; overflow: hidden; background: #060e1c; }
.aurora span { position: absolute; width: 58vmax; height: 58vmax; border-radius: 50%; filter: blur(90px); opacity: 0.5; will-change: transform, filter; }
.aurora .a1 { left: -18vmax; top: -18vmax; background: radial-gradient(circle at center, rgba(38,120,200,0.55), transparent 70%); animation: drift1 28s ease-in-out infinite alternate, hueshift 22s ease-in-out infinite alternate; }
.aurora .a2 { right: -20vmax; top: 6vmax; background: radial-gradient(circle at center, rgba(63,193,232,0.42), transparent 70%); animation: drift2 34s ease-in-out infinite alternate, hueshift 26s ease-in-out infinite alternate-reverse; }
.aurora .a3 { left: 10vmax; bottom: -24vmax; background: radial-gradient(circle at center, rgba(45,212,191,0.36), transparent 70%); animation: drift3 30s ease-in-out infinite alternate, hueshift 24s ease-in-out infinite alternate; }
.aurora .a4 { right: 4vmax; bottom: -12vmax; width: 44vmax; height: 44vmax; background: radial-gradient(circle at center, rgba(124,93,250,0.30), transparent 70%); animation: drift2 38s ease-in-out infinite alternate-reverse, hueshift 30s ease-in-out infinite alternate; }
@keyframes drift1 { to { transform: translate(14vmax, 10vmax) scale(1.18); } }
@keyframes drift2 { to { transform: translate(-12vmax, 12vmax) scale(1.1); } }
@keyframes drift3 { to { transform: translate(10vmax, -10vmax) scale(1.22); } }
@keyframes hueshift { to { filter: blur(90px) hue-rotate(55deg); } }
@media (prefers-reduced-motion: reduce) { .aurora span { animation: none; } }

/* Masthead */
.site-header { border-bottom: 1px solid var(--line); }
.site-header .wrap { padding-top: 1.6rem; padding-bottom: 1.2rem; }
.brand { font-family: var(--serif); font-size: 1.9rem; font-weight: 700; margin: 0; letter-spacing: -0.01em; }
.brand a { color: var(--ink); text-decoration: none; display: inline-flex; align-items: center; gap: 0.8rem; }
.brand-logo { width: 46px; height: 46px; border-radius: 12px; box-shadow: 0 0 22px rgba(63,193,232,0.5); }
.tagline { color: var(--muted); margin: 0.35rem 0 0; font-size: 1rem; }
.site-nav { margin-top: 1rem; font-size: 0.95rem; }
.site-nav a { color: rgba(238,242,246,0.82); text-decoration: none; margin-right: 1.4rem; padding-bottom: 0.15rem; border-bottom: 2px solid transparent; }
.site-nav a:hover { color: var(--cyan); border-bottom-color: var(--cyan); }

/* Homepage hero */
.hero { padding: 3.2rem 0 2.75rem; border-bottom: 1px solid var(--line); }
.kicker { color: var(--cyan); font-size: 0.85rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; margin: 0 0 0.8rem; }
.hero-title { font-family: var(--serif); font-size: 2.6rem; line-height: 1.12; letter-spacing: -0.015em; margin: 0 0 0.9rem; font-weight: 700; color: var(--ink); text-shadow: 0 2px 30px rgba(0,0,0,0.45); }
.hero-title a { color: var(--ink); text-decoration: none; }
.hero-title a:hover { color: var(--cyan); }
.hero-deck { font-size: 1.2rem; line-height: 1.55; color: var(--body); margin: 0 0 1.5rem; max-width: 38rem; }
.btn { display: inline-block; background: var(--cyan); color: #052030; font-weight: 700; font-size: 1rem; padding: 0.7rem 1.7rem; border-radius: 999px; text-decoration: none; box-shadow: 0 0 24px rgba(63,193,232,0.35); }
.btn:hover { background: #7fd8f4; color: #052030; box-shadow: 0 0 32px rgba(63,193,232,0.55); }

/* Hero images */
.hero-figure { margin: 0 0 2rem; }
.hero-figure img { display: block; width: 100%; height: auto; border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 12px 48px rgba(0,0,0,0.45); }
.hero-featured { margin: 1.75rem 0 0; }

/* Archive */
.section-title { font-family: var(--serif); font-size: 1.4rem; color: var(--ink); margin: 2.75rem 0 0.5rem; letter-spacing: -0.01em; }
.section-title .count { color: var(--muted); font-family: var(--sans); font-size: 0.95rem; font-weight: 400; }
.archive-item { padding: 1.5rem 0; border-bottom: 1px solid var(--line); }
.archive-date { color: var(--cyan); font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.09em; margin: 0 0 0.4rem; }
.archive-item h3 { font-family: var(--serif); font-size: 1.32rem; line-height: 1.32; margin: 0 0 0.35rem; letter-spacing: -0.01em; }
.archive-item h3 a { color: var(--ink); text-decoration: none; }
.archive-item h3 a:hover { color: var(--cyan); }
.archive-item p { margin: 0; color: var(--muted); font-size: 0.98rem; }

/* Signup */
.signup { background: rgba(63,193,232,0.07); border: 1px solid rgba(63,193,232,0.35); border-radius: 14px; padding: 1.75rem; margin: 2.75rem 0; box-shadow: 0 0 40px rgba(63,193,232,0.12); }
.signup h2 { font-family: var(--serif); color: var(--ink); margin: 0 0 0.5rem; font-size: 1.4rem; letter-spacing: -0.01em; }
.signup p { margin: 0 0 1rem; color: var(--body); }
.form-note { font-size: 0.92rem; color: var(--muted); }
.signup iframe { width: 100%; border: 0; min-height: 190px; overflow: hidden; }

/* Podcast band */
.podcast-band { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 2rem; margin: 2.75rem 0; backdrop-filter: blur(6px); }
.podcast-band h2 { font-family: var(--serif); color: var(--ink); margin: 0 0 0.6rem; font-size: 1.4rem; letter-spacing: -0.01em; }
.podcast-band p { color: var(--body); margin: 0 0 1.1rem; }
.podcast-band .podcast-links { margin: 0; }
.podcast-links a { display: inline-block; margin: 0.3rem 1.1rem 0.3rem 0; color: var(--cyan); font-weight: 600; text-decoration: none; }
.podcast-links a:hover { text-decoration: underline; }

/* Article */
article .kicker { margin-top: 2.75rem; }
article h1 { font-family: var(--serif); font-size: 2.35rem; line-height: 1.15; letter-spacing: -0.015em; margin: 0 0 0.8rem; font-weight: 700; color: var(--ink); text-shadow: 0 2px 26px rgba(0,0,0,0.5); }
.deck { font-size: 1.18rem; line-height: 1.55; color: var(--body); margin: 0 0 1rem; max-width: 40rem; }
.byline { color: var(--muted); font-size: 0.92rem; margin: 0 0 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--line); }
article h2 { font-family: var(--serif); font-size: 1.5rem; letter-spacing: -0.01em; margin: 2.4rem 0 0.8rem; color: var(--ink); }
article h2::after { content: ""; display: block; width: 2.5rem; height: 3px; background: var(--cyan); margin-top: 0.45rem; box-shadow: 0 0 12px rgba(63,193,232,0.7); }
article h3 { font-family: var(--serif); font-size: 1.18rem; margin: 1.7rem 0 0.5rem; color: var(--ink); }
article p, article li { max-width: 65ch; }
article ul, article ol { padding-left: 1.4rem; }
article li { margin-bottom: 0.35rem; }
.dropcap::first-letter { font-family: var(--serif); font-size: 3.3em; float: left; line-height: 0.85; padding-right: 0.14em; padding-top: 0.05em; color: var(--cyan); font-weight: 700; }
article blockquote { border-left: 3px solid var(--cyan); margin: 1.5rem 0; padding: 0.2rem 0 0.2rem 1.1rem; color: var(--body); font-style: italic; }
hr { border: none; border-top: 1px solid var(--line); margin: 2.2rem 0; }
.references { font-size: 0.93rem; }
.references li { margin-bottom: 0.4rem; }
.references a { overflow-wrap: anywhere; }

/* Prev / next */
.edition-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 3rem; }
.edition-nav a { display: block; background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 1rem 1.2rem; color: var(--ink); text-decoration: none; }
.edition-nav a:hover { border-color: var(--cyan); box-shadow: 0 0 24px rgba(63,193,232,0.15); }
.edition-nav .nav-label { display: block; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted); margin-bottom: 0.3rem; }
.edition-nav .nav-title { font-family: var(--serif); font-size: 1.02rem; line-height: 1.35; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); margin-top: 3rem; padding: 1.75rem 0 2.5rem; color: var(--muted); font-size: 0.9rem; }
.site-footer nav { margin-bottom: 0.75rem; }
.site-footer nav a { color: var(--muted); text-decoration: none; margin-right: 1.2rem; }
.site-footer nav a:hover { color: var(--cyan); }

main { padding-bottom: 1rem; }

@media (max-width: 600px) {
  body { font-size: 16px; }
  .hero { padding: 2.25rem 0 2rem; }
  .hero-title { font-size: 1.95rem; }
  article h1 { font-size: 1.8rem; }
  .edition-nav { grid-template-columns: 1fr; }
  .brand { font-size: 1.6rem; }
  .brand-logo { width: 38px; height: 38px; }
}