/* Vibe Coders South Africa — single stylesheet, no build step. */

@font-face {
  font-family: "Fraunces";
  src: url("/assets/fonts/fraunces-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Manrope";
  src: url("/assets/fonts/manrope-var.woff2") format("woff2");
  font-weight: 200 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Plex Mono";
  src: url("/assets/fonts/plex-mono-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

:root {
  --navy-950: #050a17;
  --navy-900: #070d1c;
  --navy-850: #0b1428;
  --navy-800: #101b34;
  --line: rgba(173, 190, 230, 0.14);
  --text: #eef1f7;
  --muted: #a9b4c9;
  --gold: #f5b83d;
  --gold-soft: #ffd27a;
  --green: #22d27a;
  --blue: #3b93ff;
  --red: #ff5a4a;

  --font-display: "Fraunces", "Iowan Old Style", Georgia, serif;
  --font-body: "Manrope", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --wrap: 1180px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section: clamp(5rem, 11vw, 9rem);
  --radius: 18px;
  --ease: cubic-bezier(.2, .7, .2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--navy-900);
  color: var(--text);
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; }

:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 3px;
  border-radius: 6px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}
p { margin: 0; text-wrap: pretty; }

.wrap {
  width: min(100% - var(--gutter) * 2, var(--wrap));
  margin-inline: auto;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -4rem;
  z-index: 100;
  padding: .7rem 1rem;
  background: var(--gold);
  color: var(--navy-950);
  font-weight: 700;
  border-radius: 10px;
  text-decoration: none;
}
.skip-link:focus { top: 1rem; }

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  min-height: 48px;
  padding: .8rem 1.4rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .005em;
  text-decoration: none;
  transition: transform .25s var(--ease), background-color .25s var(--ease), border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.btn-primary {
  background: var(--gold);
  color: var(--navy-950);
  box-shadow: 0 10px 30px -12px rgba(245, 184, 61, .6);
}
.btn-primary:hover { background: var(--gold-soft); transform: translateY(-2px); }
.btn-ghost {
  border: 1px solid rgba(238, 241, 247, .28);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--text); background: rgba(238, 241, 247, .06); }
.btn-sm { min-height: 40px; padding: .5rem 1.1rem; font-size: .925rem; }
.btn-lg { min-height: 56px; padding: 1rem 1.8rem; font-size: 1.075rem; }
.btn-icon { width: 1.15em; height: 1.15em; transition: transform .25s var(--ease); }
.btn:hover .btn-icon { transform: translateX(3px); }

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 13, 28, .72);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
.site-header.is-scrolled { 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;
  font-weight: 800;
  letter-spacing: -.01em;
}
.brand-mark { width: 40px; height: 40px; border-radius: 10px; }
.brand-name { font-size: 1.05rem; }
.brand-sa { color: var(--gold); }

.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav ul {
  display: flex;
  gap: 1.75rem;
  margin: 0; padding: 0;
  list-style: none;
}
.site-nav ul a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
  font-size: .95rem;
  transition: color .2s;
}
.site-nav ul a:hover { color: var(--text); }

.nav-toggle {
  display: none;
  width: 48px; height: 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  place-items: center;
}
.nav-toggle-bars,
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  display: block;
  width: 20px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .25s var(--ease), opacity .2s;
}
.nav-toggle-bars { position: relative; }
.nav-toggle-bars::before,
.nav-toggle-bars::after { content: ""; position: absolute; left: 0; }
.nav-toggle-bars::before { top: -6px; }
.nav-toggle-bars::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 860px) {
  .js .nav-toggle { display: grid; }
  .js .site-nav {
    position: absolute;
    inset: 72px 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 1.25rem;
    padding: 1.25rem var(--gutter) 2rem;
    background: var(--navy-900);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 30px 40px -20px rgba(0, 0, 0, .6);
  }
  .js .site-nav:not(.is-open) { display: none; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav ul a {
    display: block;
    padding: .9rem 0;
    font-size: 1.1rem;
    color: var(--text);
    border-bottom: 1px solid var(--line);
  }
  .site-nav .btn { justify-content: center; min-height: 52px; }
  /* Without JS the nav simply wraps under the brand. */
  html:not(.js) .header-inner { flex-wrap: wrap; padding-block: .75rem; }
  html:not(.js) .site-nav { flex-wrap: wrap; }
  html:not(.js) .site-nav ul { flex-direction: row; flex-wrap: wrap; gap: 0 1.25rem; }
  html:not(.js) .site-nav ul a { border: 0; padding: .4rem 0; }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(4.5rem, 12vw, 9rem) 0 clamp(3.5rem, 8vw, 6rem);
  background:
    radial-gradient(60% 70% at 15% 10%, rgba(34, 210, 122, .10), transparent 70%),
    radial-gradient(50% 60% at 90% 30%, rgba(59, 147, 255, .12), transparent 70%),
    radial-gradient(70% 60% at 50% 110%, rgba(245, 184, 61, .10), transparent 70%);
}

.hero-lines {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  z-index: -1;
  opacity: .8;
}
@media (max-width: 640px) { .hero-lines { opacity: .45; } }
.line { stroke-dasharray: 1600; stroke-dashoffset: 0; }
.l-gold { stroke: var(--gold); }
.l-green { stroke: var(--green); }
.l-blue { stroke: var(--blue); }
.l-red { stroke: var(--red); }
.hero-lines .line { stroke-opacity: .55; }
.d-gold { fill: var(--gold); background: var(--gold); }
.d-green { fill: var(--green); background: var(--green); }
.d-blue { fill: var(--blue); background: var(--blue); }
.d-red { fill: var(--red); background: var(--red); }
.dot { filter: drop-shadow(0 0 8px currentColor); }
.dot.d-gold { color: var(--gold); }
.dot.d-green { color: var(--green); }
.dot.d-blue { color: var(--blue); }
.dot.d-red { color: var(--red); }

.hero-inner { max-width: 60rem; }

.eyebrow {
  display: inline-flex;
  align-items: baseline;
  gap: .6rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}
.eyebrow .code { color: var(--green); }
.eyebrow .num { color: var(--gold); }

.hero h1 {
  font-size: clamp(2.9rem, 1.6rem + 6.4vw, 6.4rem);
  font-weight: 600;
  letter-spacing: -.03em;
  line-height: .98;
}
.hero h1 em {
  font-style: normal;
  color: var(--gold);
}

.lede {
  max-width: 40rem;
  margin-top: 1.75rem;
  font-size: clamp(1.08rem, 1rem + .45vw, 1.3rem);
  line-height: 1.6;
  color: #cfd6e4;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  margin-top: 2.4rem;
}
.hero-note {
  margin-top: 1.25rem;
  font-size: .925rem;
  color: var(--muted);
}

/* ---------- Scene ---------- */

.scene {
  position: relative;
  margin-block: 0;
  border-radius: calc(var(--radius) + 6px);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8);
}
.scene img { width: 100%; aspect-ratio: 1600 / 463; object-fit: cover; }
.scene::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7, 13, 28, .35), transparent 30%, transparent 75%, rgba(7, 13, 28, .4));
  pointer-events: none;
}
@media (max-width: 640px) {
  .scene img { aspect-ratio: 4 / 3; object-position: 30% 50%; }
}

/* ---------- Sections ---------- */

.section { padding-block: var(--section); }
.section-alt {
  background: linear-gradient(180deg, var(--navy-900), var(--navy-850) 20%, var(--navy-850) 80%, var(--navy-900));
}

.section-head { max-width: 44rem; margin-bottom: clamp(2.5rem, 6vw, 4rem); }
.section-head h2 { font-size: clamp(2.1rem, 1.4rem + 3vw, 3.6rem); }
.section-intro { margin-top: 1.1rem; color: var(--muted); font-size: 1.1rem; }

/* Audience cards */
.audience {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: 1rem;
  margin: 0; padding: 0;
  list-style: none;
}
.card {
  --accent: var(--gold);
  position: relative;
  padding: 2rem 1.6rem 1.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(16, 27, 52, .7), rgba(11, 20, 40, .3));
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.card::before {
  content: "";
  position: absolute;
  top: -1px; left: 1.6rem;
  width: 44px; height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--accent);
  box-shadow: 0 0 18px var(--accent);
}
.card:hover { border-color: color-mix(in srgb, var(--accent) 45%, transparent); transform: translateY(-3px); }
.card h3 { font-size: 1.55rem; margin-bottom: .7rem; }
.card p { color: var(--muted); }
.c-green { --accent: var(--green); }
.c-gold { --accent: var(--gold); }
.c-blue { --accent: var(--blue); }
.c-red { --accent: var(--red); }

/* Topics */
.topics-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 4rem;
}
@media (min-width: 960px) {
  .topics-layout { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
  .topics-layout .section-head { position: sticky; top: 7rem; align-self: start; }
}
.topics-mark {
  width: 180px;
  margin-top: 2.5rem;
  mix-blend-mode: lighten;
}
@media (max-width: 959px) { .topics-mark { display: none; } }

.topics {
  margin: 0; padding: 0;
  list-style: none;
  counter-reset: topic;
  border-top: 1px solid var(--line);
}
.topic {
  position: relative;
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: .3rem 1rem;
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--line);
  counter-increment: topic;
}
.topic::before {
  content: counter(topic, decimal-leading-zero);
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--muted);
  padding-top: .55rem;
}
.topic-dot {
  position: absolute;
  left: 1.9rem; top: 2.85rem;
  width: 9px; height: 9px;
  border-radius: 50%;
  box-shadow: 0 0 12px currentColor;
}
.topic-dot.d-gold { color: var(--gold); }
.topic-dot.d-green { color: var(--green); }
.topic-dot.d-blue { color: var(--blue); }
.topic-dot.d-red { color: var(--red); }
.topic h3 { grid-column: 2; font-size: clamp(1.6rem, 1.3rem + 1.2vw, 2.2rem); }
.topic p { grid-column: 2; color: var(--muted); max-width: 36rem; }

/* Prompts */
.prompts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: 1.25rem;
}
.prompt {
  --accent: var(--gold);
  margin: 0;
  padding: clamp(2rem, 4vw, 3rem);
  border-radius: calc(var(--radius) + 4px);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  background:
    radial-gradient(120% 100% at 0% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 60%),
    var(--navy-850);
}
.prompt p {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 1.3rem + 2.4vw, 3rem);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--accent);
}
.prompt p::before { content: "“"; }
.prompt p::after { content: "”"; }
.prompt footer { margin-top: 1.2rem; color: var(--muted); }
.p-gold { --accent: var(--gold); }
.p-green { --accent: var(--green); }

/* Join */
.join { padding-top: 0; }
.join-inner {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(3rem, 7vw, 5.5rem) clamp(1.5rem, 6vw, 5rem);
  border-radius: calc(var(--radius) + 10px);
  border: 1px solid var(--line);
  background:
    radial-gradient(70% 90% at 100% 0%, rgba(59, 147, 255, .16), transparent 60%),
    radial-gradient(60% 90% at 0% 100%, rgba(245, 184, 61, .14), transparent 60%),
    var(--navy-850);
}
.join-lines {
  position: absolute;
  right: -40px; bottom: -20px;
  width: min(640px, 80%);
  z-index: -1;
  opacity: .45;
}
.join h2 { font-size: clamp(2.4rem, 1.6rem + 3.4vw, 4.2rem); }
.steps {
  display: grid;
  gap: .9rem;
  margin: 2rem 0 2.5rem;
  padding: 0;
  list-style: none;
  font-size: 1.1rem;
}
.steps li { display: flex; align-items: center; gap: .9rem; }
.step-n {
  flex: none;
  display: grid; place-items: center;
  width: 2.1rem; height: 2.1rem;
  border-radius: 50%;
  border: 1px solid rgba(245, 184, 61, .5);
  color: var(--gold);
  font-family: var(--font-mono);
  font-size: .9rem;
}

/* Contact */
.contact { padding-top: 0; }
.contact-inner {
  display: grid;
  gap: 1.5rem 4rem;
  padding-top: clamp(3rem, 6vw, 4.5rem);
  border-top: 1px solid var(--line);
}
@media (min-width: 860px) { .contact-inner { grid-template-columns: 5fr 7fr; } }
.contact h2 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); }
.contact-body p { color: #cfd6e4; font-size: 1.1rem; max-width: 38rem; }
.contact-link {
  display: inline-block;
  margin-top: 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 1rem + 1.8vw, 2.2rem);
  font-weight: 600;
  color: var(--gold);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .2em;
  word-break: break-word;
  transition: text-decoration-thickness .2s, color .2s;
}
.contact-link:hover { color: var(--gold-soft); text-decoration-thickness: 2px; }
.fine { margin-top: 1.25rem; font-size: .9rem; color: var(--muted); }
.contact-body .fine { color: var(--muted); font-size: .95rem; }

/* Footer */
.site-footer {
  padding: 3rem 0 3.5rem;
  border-top: 1px solid var(--line);
  background: var(--navy-950);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
}
.site-footer .brand-mark { width: 32px; height: 32px; border-radius: 8px; }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  margin: 0; padding: 0;
  list-style: none;
}
.footer-links a { color: var(--muted); text-decoration: none; font-weight: 600; }
.footer-links a:hover { color: var(--text); text-decoration: underline; }
.site-footer .fine { flex-basis: 100%; margin: 0; }

/* 404 */
.not-found {
  min-height: calc(100vh - 72px);
  display: grid;
  align-content: center;
}
.not-found h1 { font-size: clamp(2.6rem, 1.6rem + 5vw, 5rem); letter-spacing: -.03em; }

/* ---------- Motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  .hero-lines .line {
    stroke-dashoffset: 1600;
    animation: draw 2.4s var(--ease) .15s forwards;
  }
  .hero-lines .line:nth-child(2) { animation-delay: .35s; }
  .hero-lines .line:nth-child(3) { animation-delay: .55s; }
  .hero-lines .line:nth-child(4) { animation-delay: .75s; }
  .hero-lines .line:nth-child(5) { animation-delay: .95s; }
  .hero-lines .dot {
    opacity: 0;
    animation: dot-in .6s var(--ease) forwards, pulse 4.5s ease-in-out 2.4s infinite;
    transform-box: fill-box;
    transform-origin: center;
  }
  .hero-lines .dot:nth-child(2n) { animation-delay: 1.2s, 3s; }
  .hero-lines .dot:nth-child(2n+1) { animation-delay: 1.5s, 3.6s; }

  .js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
  }
  .js .reveal.is-visible { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

@keyframes draw { to { stroke-dashoffset: 0; } }
@keyframes dot-in { to { opacity: 1; } }
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.35); }
}