/* Brainrot – Trendex landing site
   Palette derived from app icon: navy outline, cyan brain, hot pink, slime green */
:root {
  --navy: #141c40;
  --navy-deep: #0d1330;
  --cyan: #2fb6ea;
  --cyan-dark: #0d7fb0;
  --pink: #e91e7f;
  --pink-dark: #c00f66;
  --slime: #8db520;
  --slime-dark: #5f7d0e;
  --bg: #f7f9fc;
  --surface: #ffffff;
  --text: #1b2245;
  --text-soft: #4a5378;
  --border: #dde3f0;
  --shadow: 0 6px 24px rgba(20, 28, 64, 0.10);
  --radius: 16px;
  --maxw: 68rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1330;
    --surface: #171f4a;
    --text: #eef1fb;
    --text-soft: #aab3d6;
    --border: #2b356e;
    --shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
    --cyan-dark: #63cdf4;
    --pink-dark: #ff64ad;
    --slime-dark: #b7dd4d;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 1.0625rem;
}

img { max-width: 100%; height: auto; }

a { color: var(--cyan-dark); }
a:hover { color: var(--pink-dark); }

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--pink);
  color: #fff;
  padding: 0.6rem 1rem;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; color: #fff; }

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

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--text);
}
.brand img { width: 36px; height: 36px; border-radius: 9px; }
.brand span em { color: var(--pink-dark); font-style: normal; }

.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 0.4rem 0.7rem;
  font-size: 1.2rem;
  color: var(--text);
  cursor: pointer;
}
.site-nav ul {
  display: flex;
  gap: 1.4rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  text-decoration: none;
  color: var(--text-soft);
  font-weight: 600;
  font-size: 0.95rem;
}
.site-nav a:hover { color: var(--pink-dark); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border); box-shadow: var(--shadow); }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; gap: 0; padding: 0.5rem 0; }
  .site-nav a { display: block; padding: 0.8rem 1.5rem; }
}

/* ---------- Hero ---------- */
.hero {
  padding: 4rem 0 3.5rem;
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(47, 182, 234, 0.18), transparent 60%),
    radial-gradient(50rem 28rem at -10% 30%, rgba(233, 30, 127, 0.14), transparent 55%);
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; text-align: center; }
  .hero-shot { margin: 0 auto; }
}
.eyebrow {
  display: inline-block;
  background: var(--slime);
  color: #10230a;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.12;
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}
h1 .zap { color: var(--pink-dark); }
.hero p.lede {
  font-size: 1.2rem;
  color: var(--text-soft);
  margin: 0 0 1.8rem;
  max-width: 34em;
}
@media (max-width: 860px) { .hero p.lede { margin-inline: auto; } }

.store-badges { display: flex; gap: 0.9rem; flex-wrap: wrap; align-items: center; }
@media (max-width: 860px) { .store-badges { justify-content: center; } }
.badge-appstore {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  background: var(--navy);
  color: #fff;
  text-decoration: none;
  padding: 0.7rem 1.4rem;
  border-radius: 14px;
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.badge-appstore:hover { transform: translateY(-2px); box-shadow: var(--shadow); color: #fff; }
.badge-appstore svg { width: 26px; height: 26px; flex: none; }
.badge-appstore .lines { display: flex; flex-direction: column; line-height: 1.15; text-align: left; }
.badge-appstore .small { font-size: 0.7rem; opacity: 0.85; }
.badge-appstore .big { font-size: 1.1rem; font-weight: 700; }
.hero-note { font-size: 0.85rem; color: var(--text-soft); margin-top: 0.9rem; }

/* Hero screenshot */
.hero-shot { margin: 0; max-width: 19rem; }
.hero-shot img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 24px;
  border: 1px solid rgba(47, 182, 234, 0.45);
  box-shadow: var(--shadow);
  background: var(--navy-deep);
}
.hero-shot figcaption { text-align: center; font-size: 0.82rem; color: var(--text-soft); margin-top: 0.7rem; }

/* Screenshot strip */
.shot-strip {
  display: flex;
  gap: 1.1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  list-style: none;
  margin: 0;
  padding: 0.25rem 0.25rem 1rem;
}
.shot-strip:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; border-radius: 6px; }
.shot-strip > li { flex: 0 0 min(66vw, 16rem); scroll-snap-align: start; }
.shot-card { margin: 0; }
.shot-card img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 20px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  background: var(--navy-deep);
}
.shot-card figcaption { margin-top: 0.8rem; font-size: 0.9rem; color: var(--text-soft); }
.shot-card figcaption strong { display: block; color: var(--text); font-size: 1rem; margin-bottom: 0.15rem; }
@media (min-width: 861px) {
  .shot-strip { display: grid; grid-auto-flow: column; grid-auto-columns: 1fr; overflow: visible; padding-bottom: 0; }
  .shot-strip > li { flex: none; }
}

/* ---------- Sections ---------- */
section { padding: 3.5rem 0; }
section:nth-of-type(even) { background: var(--surface); }
h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  margin: 0 0 0.6rem;
  letter-spacing: -0.01em;
}
.section-intro { color: var(--text-soft); max-width: 42em; margin: 0 0 2rem; }
.kicker {
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--pink-dark);
  margin: 0 0 0.4rem;
}

/* Problem / solution */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; }
@media (max-width: 760px) { .split { grid-template-columns: 1fr; } }
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem;
}
section:nth-of-type(even) .panel { background: var(--bg); }
.panel h3 { margin: 0 0 0.6rem; font-size: 1.15rem; }
.panel.problem h3 { color: var(--pink-dark); }
.panel.solution h3 { color: var(--slime-dark); }
.panel ul { margin: 0; padding-left: 1.2rem; color: var(--text-soft); }
.panel li { margin-bottom: 0.45rem; }

/* Feature cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.4rem; }
@media (max-width: 960px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .cards { grid-template-columns: 1fr; } }
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
section:nth-of-type(odd) .card { background: var(--surface); }
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card .icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 0.9rem;
  background: rgba(47, 182, 234, 0.16);
}
.card:nth-child(3n+2) .icon { background: rgba(233, 30, 127, 0.14); }
.card:nth-child(3n) .icon { background: rgba(141, 181, 32, 0.2); }
.card h3 { margin: 0 0 0.5rem; font-size: 1.08rem; }
.card p { margin: 0; color: var(--text-soft); font-size: 0.97rem; }

/* Category chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.4rem; }
.chip {
  border-radius: 999px;
  padding: 0.45rem 1.05rem;
  font-weight: 700;
  font-size: 0.9rem;
  border: 2px solid var(--border);
  background: var(--surface);
}
.chip:nth-child(3n+1) { border-color: var(--cyan); }
.chip:nth-child(3n+2) { border-color: var(--pink); }
.chip:nth-child(3n) { border-color: var(--slime); }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.4rem; counter-reset: step; list-style: none; margin: 0; padding: 0; }
@media (max-width: 960px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.steps li { counter-increment: step; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.4rem 1.3rem; }
section:nth-of-type(odd) .steps li { background: var(--surface); }
.steps li::before {
  content: counter(step);
  display: inline-grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--pink);
  color: #fff;
  font-weight: 800;
  margin-bottom: 0.7rem;
}
.steps h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.steps p { margin: 0; color: var(--text-soft); font-size: 0.94rem; }

/* Pro panel */
.pro-panel {
  background: var(--navy-deep);
  color: #eef1fb;
  border-radius: 22px;
  padding: 2.2rem 2rem;
  border: 1px solid rgba(233, 30, 127, 0.4);
}
.pro-panel h2 { color: #ff64ad; }
.pro-panel .cards .card { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.14); }
.pro-panel .card h3 { color: #eef1fb; }
.pro-panel .card p { color: #aab3d6; }

/* FAQ */
.faq-item { border: 1px solid var(--border); border-radius: 12px; margin-bottom: 0.8rem; background: var(--bg); overflow: hidden; }
section:nth-of-type(odd) .faq-item { background: var(--surface); }
.faq-item summary, .faq-q {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  font: inherit;
  font-weight: 700;
  color: var(--text);
  padding: 1rem 3rem 1rem 1.2rem;
  cursor: pointer;
  position: relative;
  display: block;
}
.faq-q::after {
  content: "+";
  position: absolute;
  right: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.4rem;
  color: var(--pink-dark);
  transition: transform 0.2s ease;
}
.faq-q[aria-expanded="true"]::after { transform: translateY(-50%) rotate(45deg); }
.faq-a { padding: 0 1.2rem 1.1rem; color: var(--text-soft); margin: 0; }
.faq-a[hidden] { display: none; }

/* Guide cards */
.guide-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.4rem; }
@media (max-width: 720px) { .guide-list { grid-template-columns: 1fr; } }
.guide-card {
  display: block;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.4rem;
  color: var(--text);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
section:nth-of-type(even) .guide-card { background: var(--bg); }
.guide-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); color: var(--text); }
.guide-card h3 { margin: 0 0 0.4rem; font-size: 1.08rem; color: var(--cyan-dark); }
.guide-card p { margin: 0; color: var(--text-soft); font-size: 0.95rem; }

/* CTA band */
.cta-band { text-align: center; }
.cta-band .wrap { max-width: 46rem; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy-deep);
  color: #aab3d6;
  padding: 3rem 0 2rem;
  font-size: 0.92rem;
}
.site-footer a { color: #63cdf4; text-decoration: none; }
.site-footer a:hover { color: #ff64ad; text-decoration: underline; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 2rem; margin-bottom: 2rem; }
@media (max-width: 720px) { .footer-grid { grid-template-columns: 1fr; } }
.site-footer h3 { color: #eef1fb; font-size: 0.95rem; margin: 0 0 0.7rem; text-transform: uppercase; letter-spacing: 0.06em; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 0.45rem; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 1.3rem; font-size: 0.82rem; }

/* ---------- Guide / article pages ---------- */
.article-header { padding: 3rem 0 1.5rem; }
.breadcrumb { font-size: 0.85rem; color: var(--text-soft); margin-bottom: 1rem; }
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0.4rem; }
.breadcrumb li + li::before { content: "›"; margin-right: 0.4rem; color: var(--pink-dark); }
.article-meta { color: var(--text-soft); font-size: 0.9rem; }
article.guide { padding-bottom: 3rem; }
article.guide .wrap { max-width: 46rem; }
article.guide h2 { font-size: 1.55rem; margin-top: 2.4rem; }
article.guide h3 { font-size: 1.2rem; margin-top: 1.8rem; }
article.guide p, article.guide li { color: var(--text); }
article.guide table { border-collapse: collapse; width: 100%; margin: 1.2rem 0; font-size: 0.95rem; }
article.guide th, article.guide td { border: 1px solid var(--border); padding: 0.6rem 0.8rem; text-align: left; }
article.guide th { background: var(--surface); }
.callout {
  background: var(--surface);
  border-left: 5px solid var(--slime);
  border-radius: 0 12px 12px 0;
  padding: 1.1rem 1.3rem;
  margin: 1.6rem 0;
}
.callout.pink { border-left-color: var(--pink); }
.callout.cyan { border-left-color: var(--cyan); }
.app-help {
  background: var(--navy-deep);
  color: #eef1fb;
  border-radius: 18px;
  padding: 1.8rem 1.6rem;
  margin: 2.5rem 0 1.5rem;
}
.app-help h2 { color: #b7dd4d; margin-top: 0 !important; }
.app-help p, .app-help li { color: #d5daf0 !important; }
.app-help a { color: #63cdf4; }
.related-guides { border-top: 1px solid var(--border); padding-top: 1.6rem; margin-top: 2rem; }
.related-guides h2 { font-size: 1.2rem; margin-top: 0; }