/* ==========================================================================
   RaidPixels — main.css
   Design tokens, base, layout, header & footer.
   All colours / spacing / type live as custom properties in :root.
   ========================================================================== */

:root {
  /* Brand palette — bold tech / marketing consultancy */
  --ink:        #0b0b16;
  --ink-2:      #14132a;
  --ink-3:      #1d1b3a;
  --violet-700: #5b21b6;
  --violet-600: #6d28d9;
  --violet-500: #7c3aed;
  --indigo-500: #4f46e5;
  --cyan-400:   #22d3ee;
  --cyan-300:   #67e8f9;

  /* Neutrals */
  --paper:   #ffffff;
  --paper-2: #f6f5fb;
  --paper-3: #edeaf6;
  --line:    #e4e1f0;
  --text:    #1b1a2e;
  --muted:   #65637f;
  --muted-2: #8c8aa3;
  --on-dark: #f4f3fb;
  --on-dark-muted: #b6b3d6;

  /* Semantic */
  --bg:        var(--paper);
  --surface:   var(--paper);
  --brand:     var(--violet-600);
  --brand-ink: var(--violet-700);
  --accent:    var(--cyan-400);
  --success:   #16a34a;

  /* Gradients */
  --grad-brand: linear-gradient(120deg, var(--violet-600), var(--indigo-500) 55%, var(--cyan-400));
  --grad-ink:   radial-gradient(120% 120% at 80% -10%, var(--ink-3) 0%, var(--ink) 60%);

  /* Typography — system stack, no web-font CDN */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
  --fs-100: 0.78rem;
  --fs-200: 0.875rem;
  --fs-300: 1rem;
  --fs-400: 1.15rem;
  --fs-500: 1.45rem;
  --fs-600: 1.85rem;
  --fs-700: 2.35rem;
  --fs-800: clamp(2.4rem, 5.2vw, 3.9rem);
  --fs-900: clamp(2.9rem, 7vw, 5rem);
  --lh-tight: 1.12;
  --lh-snug:  1.3;
  --lh-body:  1.65;
  --measure:  68ch;

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: 6rem;
  --sp-10: 8rem;

  /* Radii & shadows */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(13, 12, 34, 0.06), 0 2px 8px rgba(13, 12, 34, 0.05);
  --shadow-md: 0 12px 30px -12px rgba(45, 30, 90, 0.25);
  --shadow-lg: 0 30px 60px -20px rgba(45, 30, 90, 0.35);
  --shadow-glow: 0 20px 60px -15px rgba(124, 58, 237, 0.45);

  /* Layout */
  --container: 1180px;
  --container-narrow: 820px;
  --header-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 320ms;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  font-family: var(--font-sans);
  font-size: var(--fs-300);
  line-height: var(--lh-body);
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

h1, h2, h3, h4 {
  line-height: var(--lh-tight);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  text-wrap: balance;
}
h1 { font-size: var(--fs-800); }
h2 { font-size: var(--fs-700); }
h3 { font-size: var(--fs-500); }

p { max-width: var(--measure); }

a { color: var(--brand-ink); text-decoration: none; transition: color var(--dur) var(--ease); }
a:hover { color: var(--violet-500); }

ul, ol { padding-left: 1.2em; }

:focus-visible {
  outline: 3px solid var(--violet-500);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--sp-5);
}
.container--narrow { max-width: var(--container-narrow); }

.section { padding-block: var(--sp-9); }
.section--tight { padding-block: var(--sp-8); }
.section--ink {
  background: var(--grad-ink);
  color: var(--on-dark);
}
.section--ink h1, .section--ink h2, .section--ink h3 { color: var(--on-dark); }
.section--alt { background: var(--paper-2); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-100);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
}
.section--ink .eyebrow { color: var(--cyan-300); }
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: currentColor;
  border-radius: 2px;
}

.section-head { max-width: 640px; margin-bottom: var(--sp-7); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { color: var(--muted); margin-top: var(--sp-3); font-size: var(--fs-400); }
.section--ink .section-head p { color: var(--on-dark-muted); }

.lead { font-size: var(--fs-400); color: var(--muted); }

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

.skip-link {
  position: absolute;
  left: var(--sp-4); top: -100%;
  background: var(--ink); color: var(--on-dark);
  padding: var(--sp-2) var(--sp-4); border-radius: var(--r-sm);
  z-index: 200; transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: var(--sp-4); color: var(--on-dark); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--paper) 80%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line);
  box-shadow: var(--shadow-sm);
}
.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  height: var(--header-h);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  font-weight: 800;
  letter-spacing: -0.03em;
  font-size: var(--fs-400);
  color: var(--text);
}
.brand:hover { color: var(--text); }
.brand svg { width: 34px; height: 34px; }
.brand .brand-word b { color: var(--brand); }

.nav-links {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin: 0; padding: 0;
  margin-left: auto;
}
.nav-links a {
  display: inline-block;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--r-sm);
  color: var(--text);
  font-weight: 600;
  font-size: var(--fs-200);
}
.nav-links a:hover { background: var(--paper-3); color: var(--brand-ink); }
.nav-links a[aria-current="page"] { color: var(--brand-ink); }
.nav-links a[aria-current="page"]::after {
  content: ""; display: block; height: 2px; margin-top: 3px;
  border-radius: 2px; background: var(--grad-brand);
}

.nav-cta { margin-left: var(--sp-2); }

.nav-toggle {
  display: none;
  margin-left: auto;
  width: 44px; height: 44px;
  border: 1px solid var(--line);
  background: var(--paper);
  border-radius: var(--r-sm);
  cursor: pointer;
  align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block;
  width: 20px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.nav-toggle span::before { transform: translateY(-6px); }
.nav-toggle span::after  { transform: translateY(4px); }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateY(0) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after  { transform: translateY(-2px) rotate(-45deg); }

@media (max-width: 880px) {
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-lg);
    padding: var(--sp-4);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), visibility var(--dur);
  }
  .nav-links.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav-links a { padding: var(--sp-3) var(--sp-4); font-size: var(--fs-400); }
  .nav-links a[aria-current="page"]::after { display: none; }
  .nav-cta { margin: var(--sp-2) 0 0; }
  .nav-cta .btn { width: 100%; }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--grad-ink);
  color: var(--on-dark-muted);
  padding-block: var(--sp-8) var(--sp-6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--sp-6);
}
.footer-brand .brand { color: var(--on-dark); }
.footer-brand .brand .brand-word b { color: var(--cyan-300); }
.footer-brand p { margin-top: var(--sp-4); max-width: 34ch; font-size: var(--fs-200); }
.footer-col h4 {
  color: var(--on-dark);
  font-size: var(--fs-100);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.footer-col ul { list-style: none; padding: 0; display: grid; gap: var(--sp-3); }
.footer-col a, .footer-col address { color: var(--on-dark-muted); font-style: normal; font-size: var(--fs-200); line-height: 1.5; }
.footer-col a:hover { color: var(--cyan-300); }
.footer-bottom {
  margin-top: var(--sp-7);
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; flex-wrap: wrap; gap: var(--sp-4);
  justify-content: space-between; align-items: center;
  font-size: var(--fs-100);
}
.footer-bottom a { color: var(--on-dark-muted); }
.footer-bottom .legal-links { display: flex; gap: var(--sp-4); flex-wrap: wrap; }
.cookie-note { color: var(--muted-2); }

@media (max-width: 880px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}