/* =========================================================
   Kagiso Runs — bold sporty design system
   ========================================================= */

:root {
  /* Brand */
  --accent: #fc4c02;            /* Strava-orange — energetic, athletic */
  --accent-2: #ffb703;          /* sunrise gold for highlights */
  --accent-glow: rgba(252, 76, 2, 0.18);

  /* Light theme (default) */
  --bg: #ffffff;
  --bg-elev: #f6f6f4;
  --bg-hero: #0a0a0a;
  --text: #0a0a0a;
  --text-muted: #5a5a5a;
  --text-on-dark: #ffffff;
  --border: #e7e7e3;
  --card: #ffffff;
  --card-shadow: 0 1px 2px rgba(0,0,0,.04), 0 8px 24px rgba(0,0,0,.06);
  --topo: rgba(255, 255, 255, 0.06);

  /* Type */
  --font-display: "Bebas Neue", "Oswald", "Impact", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Layout */
  --container: 1120px;
  --radius: 14px;
  --radius-sm: 8px;
}

[data-theme="dark"] {
  --bg: #0a0a0a;
  --bg-elev: #141414;
  --bg-hero: #050505;
  --text: #f5f5f0;
  --text-muted: #a3a39a;
  --border: #1f1f1f;
  --card: #141414;
  --card-shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 24px rgba(0,0,0,.5);
}

/* =========================================================
   Reset + base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .25s ease, color .25s ease;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3, h4 { font-family: var(--font-display); letter-spacing: .02em; line-height: 1.05; margin: 0 0 .5em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.6rem); font-family: var(--font-body); font-weight: 800; letter-spacing: -.01em; }

p { margin: 0 0 1em; }
.lead { font-size: 1.15rem; color: var(--text-muted); }

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }

/* =========================================================
   Top nav
   ========================================================= */
.site-nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
[data-theme="dark"] .site-nav { background: rgba(10,10,10,.75); }

.site-nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: .75rem 1.25rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

.brand {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: .04em;
  color: var(--text);
  text-transform: uppercase;
}
.brand:hover { text-decoration: none; }
.brand__mark {
  width: 28px; height: 28px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--accent); color: #fff; border-radius: 6px;
  font-family: var(--font-body); font-weight: 900; font-size: .85rem;
  transform: rotate(-6deg);
}

.nav-links {
  display: flex; align-items: center; gap: 1.25rem;
}
.nav-links a {
  color: var(--text);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .01em;
  position: relative;
  padding: .25rem 0;
}
.nav-links a:hover { color: var(--accent); text-decoration: none; }
.nav-links a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px;
  height: 3px; background: var(--accent); border-radius: 2px;
}

.theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  width: 38px; height: 38px;
  border-radius: 999px;
  cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
  transition: transform .2s ease, border-color .2s ease;
}
.theme-toggle:hover { transform: rotate(15deg); border-color: var(--accent); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  background: var(--bg-hero);
  color: var(--text-on-dark);
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse at 80% 0%, rgba(252,76,2,.35), transparent 55%),
    radial-gradient(ellipse at 0% 100%, rgba(255,183,3,.18), transparent 50%),
    linear-gradient(180deg, #0a0a0a 0%, #1a1a1a 100%);
  z-index: -2;
}
/* topographic SVG pattern overlay */
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='600' height='600' viewBox='0 0 600 600'><g fill='none' stroke='%23ffffff' stroke-opacity='0.05' stroke-width='1.2'><path d='M0,300 Q150,200 300,300 T600,300'/><path d='M0,260 Q150,160 300,260 T600,260'/><path d='M0,340 Q150,240 300,340 T600,340'/><path d='M0,220 Q150,120 300,220 T600,220'/><path d='M0,380 Q150,280 300,380 T600,380'/><path d='M0,180 Q150,80 300,180 T600,180'/><path d='M0,420 Q150,320 300,420 T600,420'/></g></svg>");
  background-size: 800px 800px;
  opacity: .9;
  z-index: -1;
}

.hero__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 6.5rem) 1.25rem clamp(3rem, 7vw, 5.5rem);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 880px) {
  .hero__inner { grid-template-columns: 1.4fr 1fr; align-items: center; }
}

.eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 1rem;
}
.eyebrow::before {
  content: ""; width: 28px; height: 2px; background: var(--accent);
}

.hero h1 {
  font-size: clamp(2.8rem, 9vw, 6.4rem);
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.hero h1 .accent { color: var(--accent); }
.hero p.lead {
  color: rgba(255,255,255,.78);
  max-width: 48ch;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.hero__cta { display: flex; gap: .75rem; flex-wrap: wrap; margin-top: 1.75rem; }

.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .85rem 1.4rem;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .02em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .2s ease, color .2s ease, border-color .2s ease;
  text-decoration: none;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: #e64500; }
.btn--ghost { background: transparent; color: var(--text-on-dark); border-color: rgba(255,255,255,.4); }
.btn--ghost:hover { border-color: #fff; }
.btn--dark { background: var(--text); color: var(--bg); }
.btn--dark:hover { background: var(--accent); color: #fff; }

/* Hero stat tile */
.hero__tile {
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(6px);
}
.hero__tile-label {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
}
.hero__tile-value {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  color: #fff;
  line-height: 1;
  margin: .35rem 0 .25rem;
}
.hero__tile-meta { color: var(--accent-2); font-size: .9rem; font-weight: 700; }

.hero__tile-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
  margin-top: 1rem;
}
.hero__tile-grid > div {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-sm);
  padding: .75rem .9rem;
}
.hero__tile-grid span:first-child {
  display: block;
  font-family: var(--font-mono);
  font-size: .65rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
}
.hero__tile-grid span:last-child {
  display: block;
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
}

/* =========================================================
   Section helper
   ========================================================= */
.section { padding: clamp(3rem, 6vw, 5rem) 0; }
.section--alt { background: var(--bg-elev); }
.section__head {
  display: flex; align-items: end; justify-content: space-between;
  flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem;
}
.section__head h2 { text-transform: uppercase; }
.section__head a { font-weight: 700; }

/* =========================================================
   PB Dashboard
   ========================================================= */
.pb-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
}
.pb-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.25rem 1.4rem;
  position: relative;
  overflow: hidden;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.pb-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow);
  border-color: var(--accent);
}
.pb-card__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.pb-card__value {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3rem);
  line-height: 1;
  margin: .3rem 0 .15rem;
  letter-spacing: .02em;
}
.pb-card__unit {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  letter-spacing: .15em;
  text-transform: uppercase;
}
.pb-card::before {
  content: "";
  position: absolute; left: 0; right: 0; bottom: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(.25); transform-origin: left;
  transition: transform .35s ease;
}
.pb-card:hover::before { transform: scaleX(1); }

/* =========================================================
   Post cards
   ========================================================= */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.post-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex; flex-direction: column;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  position: relative;
}
.post-card:hover { transform: translateY(-3px); box-shadow: var(--card-shadow); border-color: var(--accent); text-decoration: none; }
.post-card__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  padding: .25rem .55rem;
  border-radius: 4px;
  margin-bottom: .75rem;
  align-self: flex-start;
}
.post-card__title {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.25;
  color: var(--text);
  margin: 0 0 .55rem;
}
.post-card__excerpt {
  color: var(--text-muted);
  font-size: .98rem;
  margin: 0 0 1rem;
  flex: 1;
}
.post-card__meta {
  font-family: var(--font-mono);
  font-size: .75rem;
  color: var(--text-muted);
  letter-spacing: .1em;
  text-transform: uppercase;
}
.post-card__arrow {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  transition: transform .25s ease;
  color: var(--text-muted);
}
.post-card:hover .post-card__arrow { transform: translate(4px, -4px); color: var(--accent); }

/* =========================================================
   Featured runs strip (uses strava images)
   ========================================================= */
.runs-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.run-tile {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--bg-elev);
  border: 1px solid var(--border);
}
.run-tile img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s ease;
}
.run-tile:hover img { transform: scale(1.04); }
.run-tile__label {
  position: absolute; left: .9rem; bottom: .9rem;
  background: rgba(0,0,0,.85); color: #fff;
  padding: .35rem .65rem;
  font-family: var(--font-mono);
  font-size: .7rem; letter-spacing: .2em; text-transform: uppercase;
  border-radius: 4px;
}

/* =========================================================
   Article (post) layout
   ========================================================= */
.article-hero {
  background: var(--bg-hero);
  color: var(--text-on-dark);
  position: relative;
  overflow: hidden;
}
.article-hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='600' height='600' viewBox='0 0 600 600'><g fill='none' stroke='%23ffffff' stroke-opacity='0.04' stroke-width='1.2'><path d='M0,300 Q150,200 300,300 T600,300'/><path d='M0,260 Q150,160 300,260 T600,260'/><path d='M0,340 Q150,240 300,340 T600,340'/><path d='M0,220 Q150,120 300,220 T600,220'/><path d='M0,380 Q150,280 300,380 T600,380'/></g></svg>");
  background-size: 800px 800px;
  pointer-events: none;
}
.article-hero__inner {
  max-width: 820px;
  margin: 0 auto;
  padding: clamp(3rem, 7vw, 5rem) 1.25rem clamp(2rem, 4vw, 3rem);
  position: relative;
  z-index: 1;
}
.article-hero h1 {
  font-family: var(--font-body);
  font-weight: 900;
  letter-spacing: -.01em;
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.15;
  text-transform: none;
  margin-bottom: 1rem;
}
.article-hero .meta {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.7);
}
.article-hero .meta strong { color: var(--accent-2); }

.article {
  max-width: 720px;
  margin: 0 auto;
  padding: 3rem 1.25rem 4rem;
  font-size: 1.08rem;
  line-height: 1.75;
}
.article h2 { font-family: var(--font-body); font-weight: 800; letter-spacing: -.01em; font-size: 1.7rem; text-transform: none; margin-top: 2.5rem; }
.article h3 { font-size: 1.3rem; margin-top: 2rem; }
.article ul, .article ol { padding-left: 1.4rem; }
.article ul li, .article ol li { margin-bottom: .5rem; }
.article blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.5rem 0;
  padding: .75rem 1.25rem;
  background: var(--bg-elev);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--text);
}
.article blockquote strong { color: var(--accent); font-style: normal; letter-spacing: .05em; }

.callout {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}
.callout__label {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .25rem;
}

/* =========================================================
   About + bio
   ========================================================= */
.bio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 760px) {
  .bio-grid { grid-template-columns: 1fr 1.6fr; align-items: start; }
}
.bio-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.bio-card h3 { margin-top: 0; }

.bio-portrait {
  background: linear-gradient(135deg, var(--accent), #c93a00);
  border-radius: var(--radius);
  aspect-ratio: 1;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: clamp(4rem, 14vw, 8rem);
  letter-spacing: -.02em;
  position: relative;
  overflow: hidden;
}
.bio-portrait::after {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='400' height='400' viewBox='0 0 400 400'><g fill='none' stroke='%23ffffff' stroke-opacity='0.18' stroke-width='1'><path d='M0,200 Q100,140 200,200 T400,200'/><path d='M0,160 Q100,100 200,160 T400,160'/><path d='M0,240 Q100,180 200,240 T400,240'/><path d='M0,120 Q100,60 200,120 T400,120'/><path d='M0,280 Q100,220 200,280 T400,280'/></g></svg>");
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--bg-hero);
  color: var(--text-on-dark);
  padding: 3rem 1.25rem 2rem;
  margin-top: 4rem;
}
.site-footer__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 720px) {
  .site-footer__inner { grid-template-columns: 1.4fr 1fr 1fr; }
}
.site-footer h4 {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: .85rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  margin-bottom: .85rem;
}
.site-footer a { color: rgba(255,255,255,.85); display: block; padding: .25rem 0; }
.site-footer a:hover { color: var(--accent-2); }
.site-footer__bottom {
  max-width: var(--container);
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  color: rgba(255,255,255,.5);
  letter-spacing: .1em;
  text-transform: uppercase;
}

/* =========================================================
   Breadcrumb
   ========================================================= */
.crumbs {
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin-bottom: 1.25rem;
}
.crumbs a { color: rgba(255,255,255,.85); }
.crumbs a:hover { color: var(--accent-2); text-decoration: none; }
.crumbs span { margin: 0 .5rem; opacity: .5; }

/* =========================================================
   Newsletter / CTA strip
   ========================================================= */
.cta-strip {
  background: linear-gradient(110deg, var(--accent) 0%, #c93a00 100%);
  color: #fff;
  padding: 3rem 1.25rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-strip::before {
  content: "";
  position: absolute; inset: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='400' height='400'><g fill='none' stroke='%23ffffff' stroke-opacity='0.1' stroke-width='1.2'><path d='M0,200 Q100,140 200,200 T400,200'/><path d='M0,150 Q100,90 200,150 T400,150'/><path d='M0,250 Q100,190 200,250 T400,250'/></g></svg>");
  background-size: 600px;
  pointer-events: none;
}
.cta-strip > * { position: relative; }
.cta-strip h2 { color: #fff; text-transform: uppercase; margin-bottom: .5rem; }
.cta-strip p { color: rgba(255,255,255,.9); max-width: 56ch; margin: 0 auto 1.5rem; }
.cta-strip .btn--dark { background: #0a0a0a; color: #fff; }
.cta-strip .btn--dark:hover { background: #fff; color: var(--accent); }

/* =========================================================
   Utilities
   ========================================================= */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.spacer-lg { height: 4rem; }
@media (max-width: 600px) {
  .nav-links { gap: .75rem; }
  .nav-links a { font-size: .85rem; }
  .brand { font-size: 1.3rem; }
}