/* ─── RESET ─────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ─── TOKENS ─────────────────────────────────────── */
:root {
  --bg:          #0a0a0a;
  --fg:          #f0ede8;
  --fg-muted:    rgba(240, 237, 232, 0.45);
  --fg-faint:    rgba(240, 237, 232, 0.25);
  --border:      rgba(240, 237, 232, 0.08);
  --border-mid:  rgba(240, 237, 232, 0.15);
  --surface:     #111111;
  --surface-hover: #0f0f0f;
  --card-grid: rgba(240, 237, 232, 0.06);
  --button-fg: #0a0a0a;

  --accent-ai:    #c8ff57;   /* acid green  — AI track  */
  --accent-money: #fac775;   /* warm amber  — Money track */

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --nav-h: 64px;
  --page-gutter: clamp(24px, 5vw, 80px);
  --section-gap-lg: clamp(64px, 8vw, 96px);
  --section-gap-md: clamp(36px, 6vw, 72px);
  --section-gap-sm: clamp(24px, 4vw, 40px);
}

:root[data-theme="light"] {
  --bg:          #f5f1ea;
  --fg:          #111111;
  --fg-muted:    rgba(17, 17, 17, 0.58);
  --fg-faint:    rgba(17, 17, 17, 0.32);
  --border:      rgba(17, 17, 17, 0.08);
  --border-mid:  rgba(17, 17, 17, 0.16);
  --surface:     #fffaf2;
  --surface-hover: #fff4df;
  --card-grid: rgba(17, 17, 17, 0.09);
  --button-fg: #0a0a0a;
}

/* ─── BASE ───────────────────────────────────────── */
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 16.5px;
  line-height: 1.7;
  background: var(--bg);
  color: var(--fg);
  overflow-x: hidden;
  text-align: left;
}

/* Noise texture overlay */
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 200px;
}

.content { position: relative; z-index: 1; }

/* ─── NAV ────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  height: var(--nav-h);
  padding: 0 var(--page-gutter);
  border-bottom: 0.5px solid var(--border);
  gap: 2rem;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
  margin-right: auto;
}
.logo span { color: var(--accent-ai); }

.nav-links {
  display: flex;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.78rem;
  font-weight: 400;
  color: var(--fg-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--fg); }
.nav-links a.active {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 6px;
}

.pill-nav {
  font-size: 0.75rem;
  padding: 0.4rem 1rem;
  border: 0.5px solid var(--border-mid);
  border-radius: 999px;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}
.pill-nav:hover {
  background: rgba(200, 255, 87, 0.08);
  border-color: var(--accent-ai);
  color: var(--accent-ai);
}

.theme-toggle {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 0.85rem;
  border: 0.5px solid var(--border-mid);
  border-radius: 999px;
  color: var(--fg-muted);
  background: transparent;
  cursor: pointer;
  transition: all 0.2s;
}

.theme-toggle:hover {
  border-color: var(--accent-money);
  color: var(--accent-money);
  background: rgba(250, 199, 117, 0.08);
}

.mobile-theme-toggle {
  background: transparent;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
}

/* Hamburger — hidden on desktop */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  height: 1.5px;
  background: var(--fg-muted);
  border-radius: 2px;
  transition: width 0.2s;
}
.hamburger span:nth-child(1) { width: 22px; }
.hamburger span:nth-child(2) { width: 22px; }
.hamburger span:nth-child(3) { width: 14px; }

/* Mobile overlay menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: color-mix(in srgb, var(--bg) 97%, transparent);
  backdrop-filter: blur(12px);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s;
}
.mobile-menu.open {
  opacity: 1;
  pointer-events: all;
}
.mobile-menu ul { text-align: center; display: flex; flex-direction: column; gap: 1.5rem; }
.mobile-menu a {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--fg);
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--accent-ai); }
.mobile-subscribe {
  font-size: 1rem !important;
  color: var(--accent-ai) !important;
}
.mobile-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--fg-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ─── HERO ───────────────────────────────────────── */
.hero {
  padding: var(--section-gap-lg) var(--page-gutter) var(--section-gap-md);
  max-width: 760px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 0.75rem;
}
.eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-ai);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  margin-bottom: 0;
  max-width: 700px;
}
.hero-title em {
  font-style: italic;
  font-family: var(--font-body);
  font-weight: 300;
  color: var(--fg-muted);
}
.hero-title .accent { color: var(--accent-ai); }

.hero-sub {
  font-size: 1rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.7;
  max-width: 600px;
  margin-top: 1.35rem;
  margin-bottom: 2.25rem;
}

.cta-row {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  flex-wrap: wrap;
}
.btn-primary {
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 0.8rem 1.8rem;
  background: var(--accent-ai);
  color: var(--button-fg);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  display: inline-block;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 255, 87, 0.25);
}
.scroll-hint {
  font-size: 0.75rem;
  color: var(--fg-faint);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ─── DIVIDER ────────────────────────────────────── */
.divider {
  height: 0.5px;
  background: var(--border);
  margin: 0 var(--page-gutter);
}

/* ─── CATEGORY PILLS ─────────────────────────────── */
.categories {
  padding: var(--section-gap-sm) var(--page-gutter) 1.5rem;
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.cat-tag {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border: 0.5px solid var(--border-mid);
  border-radius: 999px;
  color: var(--fg-muted);
  cursor: pointer;
  background: none;
  font-family: var(--font-body);
  transition: all 0.2s;
}
.cat-tag:hover,
.cat-tag.active {
  border-color: var(--accent-ai);
  color: var(--accent-ai);
  background: rgba(200, 255, 87, 0.06);
}

/* ─── FEATURED GRID ──────────────────────────────── */
.featured-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 0.5px;
  background: var(--card-grid);
  border-top: 0.5px solid var(--card-grid);
  border-bottom: 0.5px solid var(--card-grid);
  margin-top: 2rem;
}

.card-main {
  background: var(--bg);
  padding: 2.5rem 3rem;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding-bottom: 3.25rem;
  transition: background 0.25s;
}
.card-main::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top left, rgba(200, 255, 87, 0.05) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
}
.card-main:hover::before { opacity: 1; }
.card-main:hover { background: var(--surface-hover); }
.card-main .card-title { font-size: 2rem; }

.side-cards {
  display: flex;
  flex-direction: column;
  gap: 0.5px;
  background: var(--card-grid);
}
.card-side {
  background: var(--bg);
  padding: 2rem 2.5rem;
  cursor: pointer;
  flex: 1;
  border: 0.5px solid var(--border);
  border-radius: 12px;
  position: relative;
  padding-bottom: 3rem;
  transition: background 0.25s;
}
.card-side:hover { background: var(--surface-hover); }

/* Shared card styles */
.card-badge {
  display: inline-block;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 1rem;
  font-weight: 400;
}
.badge-ai    { background: rgba(200, 255, 87, 0.12);  color: var(--accent-ai); }
.badge-money { background: rgba(250, 199, 117, 0.12); color: var(--accent-money); }

.card-num {
  font-family: var(--font-display);
  font-size: 0.7rem;
  color: var(--fg-faint);
  letter-spacing: 0.08em;
  margin-bottom: 0.6rem;
}
.card-title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}
.excerpt {
  font-size: 0.88rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.card-date,
.read-time {
  font-size: 0.72rem;
  color: var(--fg-faint);
}
.arrow-link {
  margin-left: auto;
  width: 32px;
  height: 32px;
  border: 0.5px solid var(--border-mid);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--fg-faint);
  transition: all 0.2s;
  flex-shrink: 0;
}
.card-main .arrow-link,
.card-side .arrow-link,
.list-card .arrow-link {
  position: absolute;
  left: 1.5rem;
  bottom: 1.4rem;
  margin-left: 0;
}
.card-main:hover .arrow-link {
  border-color: var(--accent-ai);
  color: var(--accent-ai);
  transform: rotate(45deg);
}
.card-side:hover .arrow-link {
  border-color: var(--accent-money);
  color: var(--accent-money);
  transform: rotate(45deg);
}
.arrow-link.small { width: 26px; height: 26px; font-size: 0.72rem; }

/* ─── MARQUEE ────────────────────────────────────── */
.marquee-row {
  padding: 1.2rem 0;
  overflow: hidden;
  border-top: 0.5px solid var(--border);
  border-bottom: 0.5px solid var(--border);
}
.marquee-track {
  display: flex;
  gap: 3rem;
  width: max-content;
  animation: marquee 22s linear infinite;
}
.marquee-item {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.marquee-item::after {
  content: '•';
  color: var(--accent-ai);
  font-size: 0.45rem;
}

/* ─── RECENT POSTS LIST ──────────────────────────── */
.recent-posts {
  padding: var(--section-gap-md) var(--page-gutter);
}
.section-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 1.5rem;
}
.post-list {
  display: flex;
  flex-direction: column;
}
.post-list-item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem 0;
  border-bottom: 0.5px solid var(--border);
  transition: background 0.15s;
}
.post-list-item:last-child { border-bottom: none; }
.list-num {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: rgba(240, 237, 232, 0.18);
  letter-spacing: 0.06em;
  min-width: 24px;
}
.list-body { flex: 1; }
.list-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
  margin: 0.4rem 0 0.5rem;
}
.list-title a:hover { color: var(--accent-ai); }
.list-meta { display: flex; gap: 1rem; }

/* ─── NEWSLETTER ─────────────────────────────────── */
.subscribe-strip {
  padding: var(--section-gap-md) var(--page-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  border-top: 0.5px solid var(--border);
  flex-wrap: wrap;
}
.subscribe-text h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.3rem;
}
.subscribe-text p {
  font-size: 0.82rem;
  font-weight: 300;
  color: var(--fg-muted);
}
.subscribe-form {
  display: flex;
  align-items: center;
  border: 0.5px solid var(--border-mid);
  border-radius: 999px;
  overflow: hidden;
  background: rgba(240, 237, 232, 0.03);
  flex-shrink: 0;
}
.subscribe-form input {
  background: transparent;
  border: none;
  outline: none;
  padding: 0.75rem 1.25rem;
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 0.82rem;
  font-weight: 300;
  width: 220px;
}
.subscribe-form input::placeholder { color: var(--fg-faint); }
.subscribe-form button {
  background: var(--accent-ai);
  color: var(--button-fg);
  border: none;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: opacity 0.2s;
  white-space: nowrap;
}
.subscribe-form button:hover { opacity: 0.85; }

/* ─── FOOTER ─────────────────────────────────────── */
.site-footer {
  padding: 1.5rem var(--page-gutter);
  border-top: 0.5px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  text-align: left;
}
.site-footer p {
  font-size: 0.72rem;
  color: var(--fg-faint);
  letter-spacing: 0.04em;
}
.footer-links a {
  color: var(--fg-faint);
  font-size: 0.72rem;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--fg); }

/* ─── ANIMATIONS ─────────────────────────────────── */
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(0.7); }
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in { opacity: 0; animation: fadeUp 0.6s forwards; }
.d1 { animation-delay: 0.1s; }
.d2 { animation-delay: 0.2s; }
.d3 { animation-delay: 0.35s; }
.d4 { animation-delay: 0.5s; }

/* ─── MOBILE ─────────────────────────────────────── */
@media (max-width: 768px) {
  /* Nav */
  .site-nav { padding: 0 var(--page-gutter); }
  .nav-links, .pill-nav { display: none; }
  .nav-actions { margin-left: auto; }
  .theme-toggle { display: none; }
  .hamburger { display: flex; }

  /* Hero */
  .hero { padding: var(--section-gap-md) var(--page-gutter) var(--section-gap-sm); }
  .hero-sub { max-width: 100%; }

  /* Divider */
  .divider { margin: 0 var(--page-gutter); }

  /* Categories */
  .categories {
    padding: 1rem var(--page-gutter);
    flex-wrap: nowrap;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  .categories::-webkit-scrollbar { display: none; }

  /* Featured grid → single column */
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 0.5px;
  }
  .card-main {
    padding: 1.5rem 1.25rem;
  }
  .card-main .card-title { font-size: 1.4rem; }
  .side-cards { gap: 0.5px; }
  .card-side { padding: 1.25rem; }
  .card-title { font-size: 1.1rem; }

  /* Recent posts */
  .recent-posts { padding: var(--section-gap-sm) var(--page-gutter); }

  /* Newsletter */
  .subscribe-strip {
    padding: var(--section-gap-sm) var(--page-gutter);
    flex-direction: column;
    align-items: flex-start;
  }
  .subscribe-form { width: 100%; }
  .subscribe-form input { width: 100%; }

  /* Footer */
  .site-footer {
    padding: 1.5rem var(--page-gutter);
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    gap: 0.5rem;
  }
}

/* ─── SECTION PAGES ─────────────────────────────── */
.section-shell,
.page-shell,
.post-shell {
  max-width: 1100px;
  margin: 0 auto;
  padding: var(--section-gap-md) var(--page-gutter);
  text-align: left;
}

.section-header,
.post-hero {
  margin-bottom: 2.5rem;
}

.section-eyebrow,
.post-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-faint);
  margin-bottom: 0.8rem;
}

.post-breadcrumb {
  display: block;
  text-align: left;
}

.section-divider {
  margin: 0 0 1.5rem;
}

.section-title,
.page-shell h1,
.post-title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.section-intro,
.post-description,
.page-shell p,
.page-shell li {
  color: var(--fg);
}

.section-intro {
  max-width: 680px;
}

.list-grid,
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.5px;
  background: var(--card-grid);
  border: 0.5px solid var(--card-grid);
}

.list-card,
.related-card {
  background: var(--bg);
  padding: 1.5rem;
  position: relative;
  border: 0.5px solid var(--border);
  border-radius: 12px;
  padding-bottom: 3rem;
  transition: background 0.25s;
}

.list-card:hover,
.related-card:hover {
  background: var(--surface-hover);
}

.list-card h2,
.related-card h4,
.post-related h3,
.page-shell h2 {
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.list-card h2 {
  font-size: 1.2rem;
  line-height: 1.2;
  margin: 0.6rem 0;
}

.list-card p,
.related-card p {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.list-card .arrow-link {
  margin-top: 1rem;
}

.list-meta,
.post-meta {
  font-size: 0.72rem;
  color: var(--fg-faint);
}

/* ─── POST PAGES ────────────────────────────────── */
.post-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.post-cover {
  margin-top: 1.75rem;
  overflow: hidden;
  border: 0.5px solid var(--border);
}

.post-cover img {
  width: 100%;
  aspect-ratio: 16 / 7;
  object-fit: cover;
}

.post-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 3rem;
  align-items: start;
}

.post-content {
  color: var(--fg);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 760px;
  text-align: left;
}

.post-content h2,
.post-content h3,
.post-content h4 {
  font-family: var(--font-display);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 2.2rem 0 0.8rem;
}

.post-content p,
.post-content ul,
.post-content ol {
  margin-bottom: 1.15rem;
}

.post-content ul,
.post-content ol,
.page-shell ul,
.page-shell ol {
  padding-left: 1.25rem;
  text-align: left;
  list-style: disc;
}

.post-content a {
  color: var(--accent-ai);
  border-bottom: 1px solid rgba(200, 255, 87, 0.28);
}

.post-content code {
  background: rgba(240, 237, 232, 0.08);
  border: 0.5px solid var(--border);
  border-radius: 6px;
  padding: 0.12rem 0.35rem;
}

.post-toc {
  position: sticky;
  top: 1.5rem;
  padding: 1rem;
  border: 0.5px solid var(--border);
  background: var(--surface);
  border-radius: 12px;
}

.post-toc ul {
  list-style: none;
  padding-left: 0;
}

.post-toc a {
  color: var(--fg-muted);
  font-size: 0.82rem;
}

.post-related {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 0.5px solid var(--border);
}

.post-related h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
}

.page-shell {
  max-width: 900px;
}

.page-hero {
  margin-bottom: 1.5rem;
}

.page-shell h2 {
  margin: 2rem 0 0.75rem;
}

@media (max-width: 768px) {
  .section-shell,
  .page-shell,
  .post-shell {
    padding: 2.5rem 1.25rem;
  }

  .post-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .post-toc {
    position: static;
  }

  .post-cover img {
    aspect-ratio: 4 / 3;
  }
}