/* =========================================================
   Dattabot — shared design tokens & layout primitives
   ========================================================= */

:root {
  /* Color */
  --ink: #0F0F12;
  --ink-2: #1A1A20;
  --ink-3: #2A2A33;
  --bg-dark: #0A0A0F;
  --bg-dark-2: #12121A;
  --bg: #FAFAF7;
  --bg-2: #F2F1EC;
  --bg-3: #E8E6DE;
  --line: #E4E2D9;
  --line-dark: #2A2A33;
  --muted: #6B6B72;
  --muted-dark: #8A8A95;
  --brand: #E84A2C;
  --brand-2: #C73A1F;
  --brand-soft: #FBE5DE;
  --accent: #FFD23F;
  --ok: #2E9E5F;

  /* Type */
  --font-display: "Karla", ui-sans-serif, system-ui, sans-serif;
  --font-sans: "Karla", ui-sans-serif, system-ui, -apple-system, sans-serif;
  --font-mono: "Karla", ui-sans-serif, system-ui, sans-serif;

  /* Layout */
  --container: 1280px;
  --gutter: 24px;
  --radius: 14px;
  --radius-sm: 8px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  line-height: 1.55;
  font-size: 16px;
}

img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; }

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

.section {
  padding: 96px 0;
  position: relative;
}
.section--tight { padding: 64px 0; }
.section--dark {
  background: var(--bg-dark);
  color: #F2F1EC;
}
.section--dark .muted { color: var(--muted-dark); }

/* ---------- Type ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: currentColor;
  display: inline-block;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin: 0 0 0.5em;
  text-wrap: balance;
}

.display {
  font-family: var(--font-display);
  font-size: clamp(48px, 7.5vw, 104px);
  line-height: 0.96;
  letter-spacing: -0.035em;
  font-weight: 500;
}

h1 { font-size: clamp(40px, 5vw, 68px); }
h2 { font-size: clamp(32px, 4vw, 52px); }
h3 { font-size: clamp(22px, 2.2vw, 28px); }
h4 { font-size: 18px; letter-spacing: -0.01em; }

p { margin: 0 0 1em; text-wrap: pretty; }
.lede { font-size: clamp(18px, 1.6vw, 22px); line-height: 1.45; color: var(--ink); }
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 500;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn--primary { background: var(--brand); color: #fff; }
.btn--primary:hover { background: var(--brand-2); }
.btn--ghost {
  background: transparent;
  color: inherit;
  border-color: currentColor;
  opacity: .9;
}
.btn--ghost:hover { background: var(--ink); color: #fff; opacity: 1; }
.section--dark .btn--ghost { border-color: rgba(255,255,255,.3); color: #fff; }
.section--dark .btn--ghost:hover { background: #fff; color: var(--bg-dark); }
.btn .arrow { transition: transform .2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Focus Accessibility ---------- */
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: 4px;
}
.btn:focus-visible { outline-offset: 4px; }
input:focus-visible, textarea:focus-visible, select:focus-visible { outline: none; }

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  color: #F2F1EC;
}
.nav--light {
  background: rgba(250, 250, 247, 0.85);
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.nav__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: -0.02em;
}
.nav__brand-mark {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  background: var(--brand);
  color: #fff;
  border-radius: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
}
.nav__links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__links a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 450;
  border-radius: 999px;
  opacity: 0.78;
  transition: opacity .2s ease, background .2s ease;
}
.nav__links a:hover { opacity: 1; background: rgba(255,255,255,0.06); }
.nav--light .nav__links a:hover { background: rgba(0,0,0,0.04); }
.nav__links a.is-active { opacity: 1; }
.nav__links a.is-active::after {
  content: "";
  display: block;
  width: 4px; height: 4px;
  background: var(--brand);
  border-radius: 50%;
  margin: 2px auto 0;
}
.nav__cta { display: flex; gap: 10px; align-items: center; }

/* Hamburger button */
.nav__hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  flex-shrink: 0;
  color: inherit;
  transition: background .2s ease;
}
.nav__hamburger:hover { background: rgba(255,255,255,0.08); }
.nav--light .nav__hamburger:hover { background: rgba(0,0,0,0.05); }
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transform-origin: center;
  transition: transform .3s ease, opacity .2s ease;
}
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile full-screen panel — hidden on desktop */
.nav__mobile { display: none; }

@media (max-width: 880px) {
  .nav__links { display: none; }
  .nav__cta  { display: none; }
  .nav__hamburger { display: flex; }

  .nav__mobile {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 0; right: 0; bottom: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: saturate(120%) blur(20px);
    -webkit-backdrop-filter: saturate(120%) blur(20px);
    z-index: 49;
    padding: 20px 28px 40px;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity .3s ease, transform .3s ease;
    overflow-y: auto;
  }
  [data-nav-theme="light"] .nav__mobile { background: rgba(250,250,247,0.98); }
  .nav__mobile.is-open { opacity: 1; pointer-events: all; transform: translateY(0); }

  .nav__mobile-links {
    list-style: none; margin: 0; padding: 0;
    display: flex; flex-direction: column; flex: 1;
  }
  .nav__mobile-links li { border-bottom: 1px solid rgba(255,255,255,0.07); }
  [data-nav-theme="light"] .nav__mobile-links li { border-bottom-color: var(--line); }
  .nav__mobile-links a {
    display: flex; align-items: center;
    padding: 18px 4px;
    font-family: var(--font-display);
    font-size: clamp(24px, 7vw, 32px);
    font-weight: 500;
    letter-spacing: -0.02em;
    color: rgba(242,241,236,0.4);
    transition: color .2s ease, padding-left .2s ease;
  }
  [data-nav-theme="light"] .nav__mobile-links a { color: rgba(15,15,18,0.38); }
  .nav__mobile-links a.is-active { color: #fff; }
  [data-nav-theme="light"] .nav__mobile-links a.is-active { color: var(--ink); }
  .nav__mobile-links a:hover { color: rgba(242,241,236,0.9); padding-left: 8px; }
  [data-nav-theme="light"] .nav__mobile-links a:hover { color: var(--ink); }
  .nav__mobile-links a.is-active::after { display: none; }

  .nav__mobile-cta { margin-top: 32px; align-self: flex-start; }

  body.nav-open { overflow: hidden; }
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-dark);
  color: #C9C8C0;
  padding: 96px 0 32px;
  font-size: 14px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 80px;
}
.footer h4 {
  color: #fff;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-bottom: 18px;
  opacity: 0.55;
}
.footer ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.footer a { opacity: 0.78; transition: opacity .2s ease, color .2s ease; }
.footer a:hover { color: var(--brand); opacity: 1; }
.footer__lockup { font-family: var(--font-display); font-size: 28px; font-weight: 500; color: #fff; letter-spacing: -0.02em; margin-bottom: 14px; }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.5);
}
@media (max-width: 880px) {
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer__bottom { flex-direction: column; gap: 8px; }
}

/* ---------- Cards ---------- */
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px -20px rgba(15,15,18,0.2);
  border-color: #CFCDC2;
}
.card--dark {
  background: var(--ink-2);
  border-color: rgba(255,255,255,0.08);
  color: #F2F1EC;
}
.card--dark:hover { border-color: rgba(255,255,255,0.18); box-shadow: 0 12px 40px -20px rgba(232,74,44,0.5); }

/* ---------- Tag ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
  background: var(--brand-soft);
  border-radius: 6px;
}
.tag--dark { background: rgba(232,74,44,0.12); color: #FF7A5C; }

/* ---------- Reveal anim ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
.reveal.is-visible { opacity: 1; transform: none; }
.reveal--delay-1 { transition-delay: .08s; }
.reveal--delay-2 { transition-delay: .16s; }
.reveal--delay-3 { transition-delay: .24s; }
.reveal--delay-4 { transition-delay: .32s; }

/* ---------- Image placeholder ---------- */
.placeholder {
  position: relative;
  background-image: repeating-linear-gradient(135deg, rgba(0,0,0,0.04) 0 8px, transparent 8px 16px);
  background-color: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  aspect-ratio: 1 / 1;
  overflow: hidden;
}
.placeholder--dark {
  background-color: var(--ink-2);
  background-image: repeating-linear-gradient(135deg, rgba(255,255,255,0.04) 0 8px, transparent 8px 16px);
  border-color: rgba(255,255,255,0.08);
  color: var(--muted-dark);
}

/* ---------- Section header ---------- */
.section__head {
  max-width: 760px;
  margin-bottom: 56px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ---------- Page hero (sub-pages) ---------- */
.page-hero {
  background: var(--bg-dark);
  color: #F2F1EC;
  padding: 120px 0 80px;
  position: relative;
  overflow: hidden;
}
.page-hero__inner { position: relative; z-index: 2; }
.page-hero__title { font-size: clamp(48px, 6vw, 88px); margin-bottom: 24px; }
.page-hero__lede { max-width: 640px; font-size: 18px; color: rgba(242,241,236,0.75); }
.page-hero__bg {
  position: absolute;
  inset: 0;
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- Utility ---------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 880px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
}

.divider { height: 1px; background: var(--line); margin: 0; }
.section--dark .divider { background: rgba(255,255,255,0.08); }

/* ---------- Cookie consent banner ---------- */
#cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--ink);
  color: #fff;
  padding: 16px var(--gutter);
  z-index: 9999;
  box-shadow: 0 -4px 32px rgba(0,0,0,0.18);
  transform: translateY(0);
  opacity: 1;
  transition: transform 0.3s cubic-bezier(.4,0,.2,1), opacity 0.3s ease;
}
#cookie-banner.is-hidden {
  transform: translateY(100%);
  opacity: 0;
  pointer-events: none;
}
.cookie-banner__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cookie-banner__text {
  flex: 1;
  min-width: 200px;
  margin: 0;
  font-size: 14px;
  opacity: 0.8;
  line-height: 1.5;
}
.cookie-banner__actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.cookie-banner__btn {
  font-size: 14px;
  padding: 8px 20px;
  white-space: nowrap;
}
.cookie-banner__btn.btn--ghost {
  border-color: rgba(255,255,255,0.3);
  color: #fff;
}
.cookie-banner__btn.btn--ghost:hover {
  border-color: rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.06);
}
@media (max-width: 600px) {
  .cookie-banner__inner { flex-direction: column; align-items: flex-start; }
  .cookie-banner__actions { width: 100%; }
  .cookie-banner__btn { flex: 1; text-align: center; }
}