/* ═══════════════════════════════════════════════════════════
   DevFound — landing page styles
   Dark neon system extending the pixel </> logo.
   ═══════════════════════════════════════════════════════════ */

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  /* Ground */
  --bg:            #050914;
  --bg-alt:        #070d1d;
  --bg-elev:       #0b1226;
  --bg-elev-2:     #101a34;

  /* Brand — pulled straight from the logo strokes.
     --blue is lifted slightly off the logo's #2563ff so small text and
     button labels clear WCAG AA (4.5:1) on every surface here.
     --blue-deep keeps the original value for glows, where contrast
     doesn't apply. */
  --cyan:          #22d3ee;
  --blue:          #3b7cff;
  --blue-deep:     #2563ff;
  --grad:          linear-gradient(135deg, var(--cyan) 0%, var(--blue) 100%);
  --grad-soft:     linear-gradient(135deg, rgba(34,211,238,.16), rgba(37,99,255,.16));

  /* Text */
  --text:          #e8eefc;
  --text-dim:      #b8c7e6;
  --muted:         #8fa3c8;

  /* Lines & glow */
  --line:          rgba(120,160,255,.14);
  --line-strong:   rgba(120,160,255,.28);
  --glow:          0 0 32px rgba(37,99,255,.38);
  --glow-strong:   0 0 48px rgba(37,99,255,.55), 0 0 12px rgba(34,211,238,.35);

  /* Type */
  --font-head: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Rhythm */
  --radius:    14px;
  --radius-lg: 22px;
  --wrap:      1180px;
  --pad:       clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4.5rem, 10vw, 8rem);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;   /* clears the sticky header on anchor jumps */
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1rem, .96rem + .2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; height: auto; }
/* must outrank the `img, svg { display: block }` above, or the [hidden]
   attribute set by script.js won't actually hide the broken image */
[hidden] { display: none !important; }
h1, h2, h3 { font-family: var(--font-head); line-height: 1.1; margin: 0; letter-spacing: -.02em; }
p { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--bg-elev);
  color: var(--text);
  padding: .75rem 1.25rem;
  border-radius: 0 0 var(--radius) 0;
  text-decoration: none;
}
.skip-link:focus { left: 0; }

/* ── Layout primitives ────────────────────────────────────── */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--pad);
}
.wrap-narrow { max-width: 820px; }

.section { padding-block: var(--section-y); position: relative; }
.section-alt { background: var(--bg-alt); border-block: 1px solid var(--line); }

.center { text-align: center; }
.center-row { justify-content: center; }
.mt-lg { margin-top: 1.75rem; }
.mt-xl { margin-top: clamp(2.5rem, 5vw, 3.75rem); }

.grid { display: grid; gap: 1.25rem; }
.grid-3 { grid-template-columns: 1fr; }

/* ── Typography helpers ───────────────────────────────────── */
h1 { font-size: clamp(2.35rem, 1.4rem + 4.4vw, 4.6rem); font-weight: 700; }
h2 { font-size: clamp(1.85rem, 1.25rem + 2.6vw, 3.1rem); font-weight: 700; }
h3 { font-size: 1.1875rem; font-weight: 600; }

.grad-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 1.1rem;
}

.section-sub {
  color: var(--muted);
  max-width: 62ch;
  margin-top: 1.15rem;
  font-size: 1.0625rem;
}
.section-sub.center { margin-inline: auto; }

.strike {
  position: relative;
  color: var(--muted);
  white-space: nowrap;
}
.strike::after {
  content: "";
  position: absolute;
  left: -2%;
  right: -2%;
  top: 55%;
  height: 3px;
  border-radius: 3px;
  background: var(--grad);
  transform: rotate(-2.5deg);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
  --btn-y: .8rem;
  --btn-x: 1.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: var(--btn-y) var(--btn-x);
  border: 1px solid transparent;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: .95rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .22s ease, background-color .22s ease, border-color .22s ease;
}

.btn-primary {
  background: var(--grad);
  color: #030712;
  box-shadow: var(--glow);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--glow-strong);
}

.btn-ghost {
  background: rgba(120,160,255,.06);
  border-color: var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover {
  background: rgba(120,160,255,.12);
  border-color: var(--cyan);
  transform: translateY(-2px);
}

.btn-lg  { --btn-y: 1rem; --btn-x: 2rem; font-size: 1.0625rem; }
.btn-sm  { --btn-y: .6rem; --btn-x: 1.1rem; font-size: .875rem; }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: 2.25rem;
}

/* ── Header ───────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  transition: background-color .25s ease, border-color .25s ease, backdrop-filter .25s ease;
  border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
  background: rgba(5,9,20,.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .65rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
}
.brand-mark > * { grid-area: 1 / 1; width: 100%; height: 100%; }

/* The logo PNG is an opaque square with its own baked-in glow. Clipping it
   to a circle drops the dark corner plate so it sits cleanly on any
   background — including the translucent scrolled header. */
.brand-mark img { border-radius: 50%; object-fit: cover; }

/* The SVG stand-in is transparent, so it needs the glow drawn on. */
.brand-mark .brand-fallback { filter: drop-shadow(0 0 10px rgba(37,99,255,.55)); }
.brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -.02em;
}

/* ── Nav ──────────────────────────────────────────────────── */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.9rem;
}
.site-nav a:not(.btn) {
  text-decoration: none;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: color .18s ease;
}
.site-nav a:not(.btn):hover { color: var(--cyan); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  background: rgba(120,160,255,.06);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 2px;
  background: var(--text);
  transition: transform .22s ease, opacity .18s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding-block: clamp(4rem, 11vw, 8.5rem) clamp(4.5rem, 10vw, 8rem);
  overflow: hidden;
  isolation: isolate;
}
.hero-inner { position: relative; z-index: 2; }

.hero-glow {
  position: absolute;
  z-index: 0;
  top: -30%;
  left: 50%;
  width: min(1100px, 140vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background:
    radial-gradient(circle at 50% 50%, rgba(37,99,255,.30) 0%, rgba(37,99,255,.10) 38%, transparent 66%),
    radial-gradient(circle at 38% 42%, rgba(34,211,238,.20) 0%, transparent 55%);
  filter: blur(20px);
  animation: drift 18s ease-in-out infinite alternate;
  pointer-events: none;
}
@keyframes drift {
  from { transform: translateX(-50%) translateY(0) scale(1); }
  to   { transform: translateX(-46%) translateY(28px) scale(1.06); }
}

/* pixel grid, pure CSS — echoes the logo's pixel edges */
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(rgba(120,160,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(120,160,255,.055) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 62% at 50% 32%, #000 30%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 80% 62% at 50% 32%, #000 30%, transparent 78%);
  pointer-events: none;
}

.hero h1 { margin-bottom: 1.6rem; }

.lede {
  max-width: 60ch;
  font-size: clamp(1.0625rem, 1rem + .35vw, 1.25rem);
  color: var(--text-dim);
}
.lede strong { color: var(--text); font-weight: 600; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 2.5rem;
}
.chips li {
  font-family: var(--font-mono);
  font-size: .7875rem;
  letter-spacing: .03em;
  color: var(--text-dim);
  padding: .5rem .9rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(120,160,255,.045);
}
.chips li::before { content: "▸ "; color: var(--cyan); }

/* ── Cards ────────────────────────────────────────────────── */
.card {
  position: relative;
  padding: 1.9rem 1.6rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  transition: transform .22s ease, border-color .22s ease, background-color .22s ease;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: var(--grad-soft);
  opacity: 0;
  transition: opacity .25s ease;
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}
.card:hover::before { opacity: 1; }
.card > * { position: relative; z-index: 1; }

.card h3 { margin-bottom: .7rem; }
.card p { color: var(--muted); font-size: .96875rem; }

.card-icon {
  font-size: 1.5rem;
  line-height: 1;
  margin-bottom: 1.1rem;
  color: var(--cyan);
  text-shadow: 0 0 18px rgba(34,211,238,.6);
}

.card-num .num {
  display: block;
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--blue);
  margin-bottom: .9rem;
}
.card-num:hover .num { color: var(--cyan); }

/* ── Pullquote ────────────────────────────────────────────── */
.pullquote {
  margin-top: clamp(2.75rem, 6vw, 4rem);
  padding: clamp(1.5rem, 4vw, 2.25rem);
  text-align: center;
  font-family: var(--font-head);
  font-size: clamp(1.125rem, 1rem + .9vw, 1.6rem);
  font-weight: 600;
  line-height: 1.35;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(37,99,255,.09), rgba(5,9,20,0));
}
.pullquote span {
  display: block;
  margin-top: .6rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* ── Who it's for ─────────────────────────────────────────── */
.who-card {
  position: relative;
  overflow: hidden;
  padding: 2.1rem 1.6rem 1.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(120,160,255,.05), transparent 60%),
    var(--bg-elev);
  transition: transform .22s ease, border-color .22s ease;
}
/* gradient rule across the top edge, radius-safe */
.who-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: var(--grad);
}
.who-card:hover { transform: translateY(-4px); border-color: var(--line-strong); }
.who-card h3 { margin-bottom: .55rem; }
.who-line {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .02em;
  color: var(--cyan);
  margin-bottom: .9rem;
}
.who-card > p:last-child { color: var(--muted); font-size: .96875rem; }

/* ── Inside / checklist ───────────────────────────────────── */
.inside-layout {
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}

.checklist { display: grid; gap: 1.15rem; }
.checklist li {
  position: relative;
  padding: 1.15rem 1.25rem 1.15rem 3.35rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: .96875rem;
  transition: border-color .2s ease, transform .2s ease;
}
.checklist li:hover { border-color: var(--line-strong); transform: translateX(3px); }
.checklist li strong {
  display: block;
  margin-bottom: .2rem;
  color: var(--text);
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 600;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 1.15rem;
  top: 1.45rem;
  width: 18px;
  height: 18px;
  border-radius: 5px;
  background: var(--grad);
  box-shadow: 0 0 14px rgba(37,99,255,.5);
  /* checkmark punched out of the gradient tile */
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 12.5l5 5L20 6.5' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='square'/%3E%3C/svg%3E") center / 100% no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M4 12.5l5 5L20 6.5' fill='none' stroke='%23000' stroke-width='3.2' stroke-linecap='square'/%3E%3C/svg%3E") center / 100% no-repeat;
}

/* ── Founder ──────────────────────────────────────────────── */
.founder-layout {
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}

.founder-photo {
  position: relative;
  display: grid;
  place-items: center;
  width: min(320px, 100%);
  aspect-ratio: 3 / 4;   /* matches the source portrait, so nothing gets cropped */
  margin-inline: auto;
  padding: 3px;
  border-radius: var(--radius-lg);
  background: var(--grad);
  box-shadow: var(--glow);
}
.founder-photo > * {
  grid-area: 1 / 1;
  width: 100%;
  height: 100%;
  border-radius: calc(var(--radius-lg) - 3px);
}
.founder-photo img { object-fit: cover; object-position: 50% 25%; }
.founder-photo-fallback {
  display: grid;
  place-items: center;
  background: var(--bg-elev-2);
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--muted);
}
/* the real photo covers the fallback once it loads */
.founder-photo img { position: relative; z-index: 1; }
.founder-photo img[hidden] { display: none; }

.founder-copy h2 { margin-bottom: 1.35rem; }
.founder-copy p { color: var(--muted); margin-bottom: 1rem; }
.founder-copy p strong { color: var(--text-dim); font-weight: 600; }

/* ── FAQ ──────────────────────────────────────────────────── */
.faq { display: grid; gap: .85rem; }

.faq details {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s ease, background-color .2s ease;
}
.faq details[open] {
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
}

.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.35rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 1.0625rem;
  font-weight: 600;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "";
  flex-shrink: 0;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform .22s ease;
}
.faq details[open] summary::after { transform: rotate(225deg) translate(-3px, -3px); }
.faq summary:hover { color: var(--cyan); }

.faq-body { padding: 0 1.35rem 1.35rem; }
.faq-body p { color: var(--muted); font-size: .96875rem; }

/* ── Final CTA ────────────────────────────────────────────── */
.final-cta { padding-block: var(--section-y); }

.cta-panel {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(2.75rem, 7vw, 5rem) clamp(1.5rem, 5vw, 4rem);
  text-align: center;
  border: 1px solid var(--line-strong);
  border-radius: clamp(20px, 3vw, 32px);
  background: linear-gradient(165deg, rgba(37,99,255,.14), rgba(34,211,238,.05) 45%, rgba(5,9,20,0) 80%), var(--bg-elev);
}
.cta-panel-glow {
  position: absolute;
  z-index: 0;
  bottom: -60%;
  left: 50%;
  width: min(720px, 120%);
  aspect-ratio: 1;
  transform: translateX(-50%);
  background: radial-gradient(circle, rgba(37,99,255,.30), transparent 62%);
  filter: blur(24px);
  pointer-events: none;
}
.cta-panel > *:not(.cta-panel-glow) { position: relative; z-index: 1; }

/* ── Footer ───────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding-block: 3rem 2.5rem;
}
.footer-inner {
  display: grid;
  gap: 1.15rem;
  justify-items: center;
  text-align: center;
}
.brand-footer .brand-mark { width: 32px; height: 32px; }
.brand-footer .brand-name { font-size: 1.125rem; }

.footer-tag { color: var(--muted); font-size: .9375rem; }

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.4rem;
}
.footer-links a {
  text-decoration: none;
  font-size: .9375rem;
  color: var(--text-dim);
  transition: color .18s ease;
}
.footer-links a:hover { color: var(--cyan); }

.copyright { color: var(--muted); font-size: .8125rem; font-family: var(--font-mono); }

/* ═══════════════ Breakpoints ═══════════════ */

/* ── ≥640px ───────────────────────────────────────────────── */
@media (min-width: 640px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-inner {
    grid-template-columns: auto 1fr;
    justify-items: start;
    text-align: left;
    align-items: center;
    gap: 1rem 2rem;
  }
  .footer-tag { grid-column: 1 / -1; margin-top: -.4rem; }
  .footer-links { justify-content: flex-start; grid-column: 1 / -1; }
  .copyright { grid-column: 1 / -1; }
}

/* ── <900px : mobile nav ──────────────────────────────────── */
@media (max-width: 899px) {
  .nav-toggle { display: flex; }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: .35rem;
    padding: 1rem var(--pad) 1.5rem;
    background: rgba(7,13,29,.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    /* hidden by default, no transition jank on load */
    display: none;
  }
  .site-nav.is-open { display: flex; }

  .site-nav a:not(.btn) {
    padding: .85rem .25rem;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--line);
  }
  .site-nav .btn { margin-top: .9rem; }
}

/* ── ≥900px ───────────────────────────────────────────────── */
@media (min-width: 900px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }

  .inside-layout { grid-template-columns: 1fr 1.1fr; align-items: center; }

  .founder-layout { grid-template-columns: 320px 1fr; }
  .founder-photo { margin-inline: 0; }

  .cta-row { margin-top: 2.5rem; }
}

/* ── ≥1200px ──────────────────────────────────────────────── */
@media (min-width: 1200px) {
  .card { padding: 2.15rem 1.9rem; }
  .hero .lede { font-size: 1.25rem; }
}

/* ── Reduced motion ───────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .card:hover, .who-card:hover, .btn:hover, .checklist li:hover { transform: none; }
}

/* ── Print ────────────────────────────────────────────────── */
@media print {
  .site-header, .hero-glow, .hero-grid, .cta-panel-glow { display: none !important; }
  body { background: #fff; color: #000; }
}