/* ==========================================================================
   FX — focalxai.in
   Stylesheet v1.0
   ========================================================================== */

/* Reset --------------------------------------------------------------------*/
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { min-height: 100vh; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }

/* Variables ----------------------------------------------------------------*/
:root {
  --color-bg: #FAFAFA;
  --color-surface: #FFFFFF;
  --color-elevated: #F2F2F2;
  --color-text: #0F0F0F;
  --color-text-secondary: #525252;
  --color-text-muted: #8A8A8A;
  --color-border: #E5E5E5;
  --color-border-strong: #1A1A1A;
  --color-accent: #0F0F0F;
  --color-error: #B91C1C;
  --color-success: #166534;

  --font-display: 'Sora', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Manrope', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --container: 1200px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius: 4px;
  --radius-lg: 8px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.08);

  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base ---------------------------------------------------------------------*/
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--color-accent); color: var(--color-bg); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-text);
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; font-weight: 600; }

p { color: var(--color-text-secondary); }
p + p { margin-top: 1rem; }

strong { color: var(--color-text); font-weight: 600; }

/* Layout -------------------------------------------------------------------*/
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section { padding: clamp(64px, 9vw, 120px) 0; }
.section--tight { padding: clamp(48px, 6vw, 80px) 0; }
.section--alt { background: var(--color-surface); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.section--dark { background: var(--color-text); color: var(--color-bg); }
.section--dark h1, .section--dark h2, .section--dark h3, .section--dark h4 { color: var(--color-bg); }
.section--dark p { color: rgba(250, 250, 250, 0.75); }

/* Eyebrow / labels ---------------------------------------------------------*/
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}
.eyebrow::before { content: '— '; }

/* Buttons ------------------------------------------------------------------*/
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 14px 24px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  border-radius: var(--radius);
  transition: all var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-text);
  color: var(--color-bg);
  border-color: var(--color-text);
}
.btn--primary:hover { background: #2A2A2A; border-color: #2A2A2A; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}
.btn--secondary:hover { background: var(--color-text); color: var(--color-bg); }
.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: transparent;
  padding: 14px 0;
}
.btn--ghost:hover { color: var(--color-text-secondary); }
.btn .arrow { transition: transform var(--transition); }
.btn:hover .arrow { transform: translateX(3px); }

/* Header / Nav -------------------------------------------------------------*/
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.site-header__logo { display: inline-flex; align-items: center; }
.site-header__logo img, .site-header__logo svg { height: 28px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 32px; }
.site-nav__list { display: flex; gap: 28px; align-items: center; }
.site-nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition);
  position: relative;
}
.site-nav__link:hover, .site-nav__link[aria-current="page"] { color: var(--color-text); }
.site-nav__link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 2px;
  background: var(--color-text);
}

.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: var(--radius);
}
.menu-toggle:hover { background: var(--color-elevated); }
.menu-toggle__bar {
  display: block;
  width: 20px; height: 2px;
  background: var(--color-text);
  position: relative;
}
.menu-toggle__bar::before, .menu-toggle__bar::after {
  content: '';
  position: absolute;
  width: 20px; height: 2px;
  background: var(--color-text);
  left: 0;
}
.menu-toggle__bar::before { top: -6px; }
.menu-toggle__bar::after { top: 6px; }

@media (max-width: 820px) {
  .menu-toggle { display: inline-flex; }
  .site-nav {
    position: fixed;
    top: 72px; right: 0; left: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 24px var(--gutter) 32px;
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    transform: translateY(-110%);
    transition: transform var(--transition);
  }
  .site-nav[data-open="true"] { transform: translateY(0); }
  .site-nav__list { flex-direction: column; gap: 4px; align-items: stretch; }
  .site-nav__link { padding: 12px 0; font-size: 1rem; border-bottom: 1px solid var(--color-border); }
  .site-nav__link[aria-current="page"]::after { display: none; }
  .site-nav .btn { width: 100%; justify-content: center; margin-top: 8px; }
}

/* Hero ---------------------------------------------------------------------*/
.hero { padding: clamp(80px, 12vw, 160px) 0 clamp(48px, 7vw, 96px); }
.hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: end;
}
@media (min-width: 900px) {
  .hero__grid { grid-template-columns: 1.4fr 1fr; gap: 80px; }
}
.hero__title {
  font-size: clamp(2.5rem, 6.5vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: 2rem;
}
.hero__title em {
  font-style: normal;
  color: var(--color-text-muted);
  font-weight: 400;
}
.hero__desc {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  max-width: 56ch;
  line-height: 1.6;
}
.hero__meta {
  border-left: 2px solid var(--color-text);
  padding-left: 20px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}
.hero__meta dt { color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.6875rem; margin-top: 12px; }
.hero__meta dt:first-of-type { margin-top: 0; }
.hero__meta dd { color: var(--color-text); }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 2rem; }

/* Page header (interior pages) --------------------------------------------*/
.page-header { padding: clamp(64px, 8vw, 112px) 0 clamp(40px, 5vw, 64px); border-bottom: 1px solid var(--color-border); }
.page-header__title { font-size: clamp(2rem, 4.5vw, 3.5rem); margin-bottom: 1rem; max-width: 20ch; }
.page-header__desc { font-size: 1.0625rem; max-width: 60ch; color: var(--color-text-secondary); }

/* Card grid ----------------------------------------------------------------*/
.grid {
  display: grid;
  gap: clamp(20px, 2.5vw, 32px);
}
.grid--2 { grid-template-columns: 1fr; }
.grid--3 { grid-template-columns: 1fr; }
.grid--4 { grid-template-columns: 1fr 1fr; }
@media (min-width: 720px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
}

/* Cards --------------------------------------------------------------------*/
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 2.5vw, 32px);
  transition: all var(--transition);
}
.card:hover { border-color: var(--color-border-strong); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 12px;
}
.card__desc { font-size: 0.9375rem; line-height: 1.6; }
.card__list { margin-top: 16px; }
.card__list li {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  padding: 6px 0;
  border-top: 1px solid var(--color-border);
}
.card__list li:first-child { border-top: none; padding-top: 0; }

/* Two-column section -------------------------------------------------------*/
.split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: start;
}
@media (min-width: 900px) {
  .split { grid-template-columns: 1fr 1.4fr; gap: 96px; }
}
.split__intro h2 { margin-bottom: 1rem; }
.split__body p + p { margin-top: 1.25rem; }

/* Stats row ----------------------------------------------------------------*/
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, 1fr); } }
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  margin-bottom: 8px;
}
.stat__label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

/* CTA section --------------------------------------------------------------*/
.cta { background: var(--color-text); color: var(--color-bg); }
.cta h2 { color: var(--color-bg); max-width: 22ch; }
.cta p { color: rgba(250,250,250,0.7); max-width: 60ch; margin-top: 1rem; }
.cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: center;
}
@media (min-width: 900px) {
  .cta__inner { grid-template-columns: 1.4fr auto; gap: 64px; }
}
.cta .btn--primary { background: var(--color-bg); color: var(--color-text); border-color: var(--color-bg); }
.cta .btn--primary:hover { background: #E5E5E5; border-color: #E5E5E5; }

/* Forms --------------------------------------------------------------------*/
.form { display: grid; gap: 20px; max-width: 560px; }
.field { display: grid; gap: 6px; }
.field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.field input, .field textarea, .field select {
  width: 100%;
  padding: 12px 14px;
  font: inherit;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--color-border-strong);
}
.field textarea { min-height: 140px; resize: vertical; }
.field__help { font-size: 0.8125rem; color: var(--color-text-muted); }

/* Definition list (legal/compliance) ---------------------------------------*/
.dl {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--color-border);
}
@media (min-width: 640px) { .dl { grid-template-columns: 200px 1fr; } }
.dl__term {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  padding: 16px 0 4px;
}
.dl__desc {
  font-size: 0.9375rem;
  color: var(--color-text);
  padding: 0 0 16px;
  border-bottom: 1px solid var(--color-border);
}
@media (min-width: 640px) {
  .dl__term { padding: 16px 16px 16px 0; border-bottom: 1px solid var(--color-border); }
  .dl__desc { padding: 16px 0; }
}

/* Prose (legal pages) ------------------------------------------------------*/
.prose { max-width: 72ch; }
.prose h2 { font-size: 1.5rem; margin: 2.5rem 0 1rem; }
.prose h3 { font-size: 1.125rem; margin: 2rem 0 0.75rem; font-weight: 600; }
.prose p { color: var(--color-text-secondary); margin-bottom: 1rem; }
.prose ul { margin: 1rem 0 1rem 1.5rem; }
.prose ul li {
  list-style: disc;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}
.prose a { color: var(--color-text); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--color-text); }

/* Footer -------------------------------------------------------------------*/
.site-footer {
  background: var(--color-text);
  color: rgba(250, 250, 250, 0.75);
  padding: clamp(48px, 6vw, 72px) 0 32px;
  font-size: 0.875rem;
}
.site-footer a { color: rgba(250, 250, 250, 0.75); transition: color var(--transition); }
.site-footer a:hover { color: var(--color-bg); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}
@media (min-width: 720px) {
  .site-footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 48px; }
}
.site-footer__brand p { color: rgba(250, 250, 250, 0.55); margin-top: 16px; font-size: 0.8125rem; max-width: 32ch; }
.site-footer__col h4 {
  color: var(--color-bg);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.site-footer__col ul li { padding: 6px 0; }
.site-footer__legal {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(250, 250, 250, 0.1);
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  font-size: 0.75rem;
  color: rgba(250, 250, 250, 0.55);
  font-family: var(--font-mono);
}
@media (min-width: 720px) {
  .site-footer__legal { grid-template-columns: 1fr auto; }
}
.site-footer__legal-links { display: flex; gap: 24px; flex-wrap: wrap; }

/* Misc ---------------------------------------------------------------------*/
.divider { height: 1px; background: var(--color-border); margin: 0; border: 0; }
.text-muted { color: var(--color-text-muted); }
.mono { font-family: var(--font-mono); }

.list-check li {
  padding: 12px 0;
  border-top: 1px solid var(--color-border);
  position: relative;
  padding-left: 28px;
  color: var(--color-text);
}
.list-check li::before {
  content: '';
  position: absolute;
  left: 0; top: 18px;
  width: 14px; height: 8px;
  border-left: 2px solid var(--color-text);
  border-bottom: 2px solid var(--color-text);
  transform: rotate(-45deg);
}
.list-check li:first-child { border-top: none; }
.list-check li:first-child::before { top: 12px; }

/* Industry pill */
.pill {
  display: inline-block;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-secondary);
  margin: 0 4px 6px 0;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}
.skip-link:focus {
  left: 8px; top: 8px;
  background: var(--color-text);
  color: var(--color-bg);
  padding: 8px 12px;
  border-radius: var(--radius);
  z-index: 200;
}

/* Print --------------------------------------------------------------------*/
@media print {
  .site-header, .site-footer, .cta { display: none; }
  body { background: white; color: black; }
}