/* ============================================================
   Q Services AI — Shared design system
   Space Grotesk + Figtree.
   ============================================================ */

:root {
  /* Palette */
  --ink:        #0A1E30;
  --ink-soft:   #3C566B;
  --ink-faint:  #6E8598;
  --bg:         #FFFFFF;
  --bg-tint:    #F0FAFB;
  --bg-deep:    #071A29;
  --line:       #E2ECF0;
  --line-soft:  #EFF5F7;

  /* Accent */
  --accent:      #0EA5C4;
  --accent-deep: #0A7C95;
  --accent-wash: #E3F6FA;
  --grow:        #12A87A;   /* growth / positive numbers */
  --grow-wash:   #E4F6EF;

  /* Type */
  --font-head: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Figtree", ui-sans-serif, system-ui, sans-serif;

  /* Geometry */
  --r-sm: 10px;
  --r:    16px;
  --r-lg: 24px;
  --r-xl: 32px;
  --shadow-sm: 0 1px 2px rgba(10,30,48,.05), 0 2px 8px rgba(10,30,48,.04);
  --shadow:    0 4px 12px rgba(10,30,48,.06), 0 18px 40px rgba(10,30,48,.08);
  --shadow-lg: 0 8px 24px rgba(10,30,48,.08), 0 40px 90px rgba(10,30,48,.14);

  --maxw: 1200px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  font-size: 17px;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}

p { margin: 0; text-wrap: pretty; }

a { color: var(--accent-deep); text-decoration: none; }
a:hover { color: var(--accent); }

img { max-width: 100%; display: block; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

.eyebrow {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
  margin: 0 0 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-head);
  font-weight: 500;
  font-size: 15.5px;
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, color .2s ease;
  white-space: nowrap;
  line-height: 1;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px -4px color-mix(in srgb, var(--accent) 55%, transparent);
}
.btn-primary:hover { background: var(--accent-deep); color:#fff; transform: translateY(-1px); }
.btn-ghost {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent-deep); transform: translateY(-1px); }
.btn-dark { background: var(--ink); color:#fff; }
.btn-dark:hover { background: #0d2b43; color:#fff; transform: translateY(-1px); }
.btn-lg { padding: 16px 28px; font-size: 16.5px; }

/* ---- Nav ---- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--line-soft);
}
.nav-inner {
  height: 70px;
  display: flex; align-items: center; gap: 30px;
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
}
.brand { display: flex; align-items: center; gap: 11px; font-family: var(--font-head); font-weight: 600; font-size: 18.5px; color: var(--ink); letter-spacing: -0.02em; white-space: nowrap; }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(150deg, var(--accent), var(--accent-deep));
  display: grid; place-items: center;
  box-shadow: 0 4px 12px -3px color-mix(in srgb, var(--accent) 60%, transparent);
  flex: none;
}
.brand-mark svg { width: 19px; height: 19px; }
.nav-links { display: flex; align-items: center; gap: 4px; margin-left: 8px; }
.nav-links a {
  font-family: var(--font-head); font-size: 15px; font-weight: 500;
  color: var(--ink-soft); padding: 8px 14px; border-radius: 8px;
}
.nav-links a:hover { color: var(--ink); background: var(--bg-tint); }
.nav-links a.active { color: var(--accent-deep); background: var(--accent-wash); }
.nav-cta { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.nav-cta .signin { font-family: var(--font-head); font-size: 15px; font-weight: 500; color: var(--ink-soft); padding: 8px 6px; white-space: nowrap; }
.nav-tog { display: none; }
.nav-burger { display: none; margin-left: auto; width: 42px; height: 42px; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; align-items: center; justify-content: center; background: #fff; flex: none; }
.nav-burger span, .nav-burger span::before, .nav-burger span::after { content: ""; display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; position: relative; transition: transform .2s ease, opacity .2s ease; }
.nav-burger span::before { position: absolute; top: -6px; }
.nav-burger span::after { position: absolute; top: 6px; }
.nav-tog:checked ~ .nav-burger span { background: transparent; }
.nav-tog:checked ~ .nav-burger span::before { transform: translateY(6px) rotate(45deg); }
.nav-tog:checked ~ .nav-burger span::after { transform: translateY(-6px) rotate(-45deg); }
.nav-cta .signin:hover { color: var(--ink); }
.nav-toggle { display: none; }

/* ---- Section scaffolding ---- */
section { position: relative; }
.section-pad { padding: 96px 0; }
.section-tint { background: var(--bg-tint); }
.section-head { max-width: 720px; margin: 0 0 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head h2 { font-size: clamp(30px, 4vw, 46px); }
.section-head p { margin-top: 18px; font-size: 19px; color: var(--ink-soft); }

/* ---- Footer ---- */
.footer { background: var(--bg-deep); color: #C4D6E1; padding: 72px 0 34px; }
.footer a { color: #C4D6E1; }
.footer a:hover { color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer h4 { color:#fff; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 18px; font-weight: 600; }
.footer-links { display: flex; flex-direction: column; gap: 11px; }
.footer-links a { font-size: 15px; }
.footer .brand { color: #fff; }
.footer-blurb { color: #8FA9B9; font-size: 15px; max-width: 300px; margin-top: 18px; }
.footer-bottom {
  margin-top: 54px; padding-top: 26px; border-top: 1px solid rgba(255,255,255,.09);
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  color: #7C96A6; font-size: 14px;
}

/* ---- Utility ---- */
.pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--font-head); font-size: 13.5px; font-weight: 500;
  padding: 7px 14px; border-radius: 999px;
  background: var(--accent-wash); color: var(--accent-deep);
}
.mono-num { font-variant-numeric: tabular-nums; letter-spacing: -0.02em; }

@media (max-width: 1040px) {
  .nav-burger { display: flex; }
  .nav-cta { margin-left: 0; }
  .nav-cta .signin, .nav-cta .btn-ghost { display: none; }
  .nav-links {
    display: none; position: absolute; top: 70px; left: 0; right: 0;
    flex-direction: column; gap: 2px; align-items: stretch;
    background: color-mix(in srgb, var(--bg) 96%, transparent);
    backdrop-filter: saturate(140%) blur(14px);
    border-bottom: 1px solid var(--line); padding: 14px 20px 18px;
    box-shadow: var(--shadow);
  }
  .nav-tog:checked ~ .nav-links { display: flex; }
  .nav-links a { padding: 13px 14px; font-size: 16px; border-radius: 10px; }
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .section-pad { padding: 68px 0; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
  .nav-cta .signin { display: none; }
  body { font-size: 16px; }
}

/* ---- Accessibility ---- */
.screen-reader-text {
  border: 0; clip-path: inset(50%); height: 1px; margin: -1px; overflow: hidden;
  padding: 0; position: absolute; width: 1px; word-wrap: normal !important;
}
.screen-reader-text:focus {
  background-color: #fff; clip-path: none; color: var(--accent-deep); display: block;
  font-family: var(--font-head); font-size: 15px; font-weight: 600; height: auto;
  left: 8px; line-height: normal; padding: 14px 22px; text-decoration: none;
  top: 8px; width: auto; z-index: 100000; border-radius: 10px; box-shadow: var(--shadow);
}