@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&family=Michroma&display=swap');

:root {
  --bg: #f1f1f0;
  --bg-alt: #ededec;
  --card: #ffffff;
  --ink: #0b0d12;
  --muted: #6b7280;
  --muted-2: #9ca3af;
  --line: #e7e7e6;
  --blue: #1d9bf0;
  --blue-600: #1283d6;
  --blue-grad: linear-gradient(180deg, #29a8f5 0%, #1283d6 100%);
  --radius: 16px;
  --maxw: 1180px;
}

* { box-sizing: border-box; }

html, body {
  padding: 0;
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
::selection { background: var(--blue); color: #fff; }

svg { display: block; }

/* ============ layout ============ */
.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}
.containerNarrow {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
}
.section { padding: 88px 0; }

/* ============ buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}
.btnPrimary {
  background: var(--blue-grad);
  color: #fff;
  box-shadow: 0 8px 20px rgba(18, 131, 214, 0.35);
}
.btnPrimary:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btnArrow { width: 17px; height: 17px; }
.btnGhost {
  display: inline-flex;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 18px;
  color: var(--ink);
}
.btnGhost:hover { color: var(--blue-600); }
.btnGhostDark {
  display: inline-flex;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: 999px;
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.btnGhostDark:hover { background: rgba(255, 255, 255, 0.14); }

/* ============ logo (nikola wordmark) ============ */
.logo {
  display: inline-flex;
  align-items: center;
}
.logoImg { height: 30px; width: auto; }

/* ============ nav ============ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(241, 241, 240, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}
.navInner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navLinks {
  display: flex;
  gap: 32px;
  font-size: 15px;
  color: #3a3f47;
}
.navLinks a:hover { color: var(--blue-600); }

/* nav dropdown (pure CSS, hover) */
.navItem { position: relative; display: inline-flex; }
.navTop {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}
.navCaret { width: 12px; height: 12px; transition: transform 0.15s ease; }
.navItem:hover .navCaret { transform: rotate(180deg); }
.dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(6px);
  min-width: 180px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.1);
  padding: 6px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease, transform 0.15s ease;
  z-index: 60;
}
/* invisible bridge so the cursor can travel from the trigger to the
   dropdown without crossing a dead gap (which would close it) */
.dropdown::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -14px;
  height: 14px;
}
.navItem:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(8px);
}
.dropdown a {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  color: #3a3f47;
}
.dropdown a:hover { background: #eef6fe; color: var(--blue-600); }

/* ============ hero ============ */
.hero { padding: 64px 0 40px; }
.heroGrid {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}
.heroLeft { text-align: left; }
.pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 500;
  color: #4b5563;
  background: #fff;
  border: 1px solid var(--line);
  padding: 6px 13px;
  border-radius: 999px;
  margin-bottom: 26px;
}
.pillIcon { width: 15px; height: 15px; color: var(--blue); }
.h1 {
  font-size: 60px;
  line-height: 1.02;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 24px;
}
.lead {
  font-size: 17px;
  line-height: 1.6;
  color: #4b5563;
  max-width: 440px;
  margin: 0 0 30px;
}
.heroBtns {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.heroChecks {
  display: flex;
  gap: 24px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.heroChecks span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 14px;
  color: #4b5563;
}
.check { width: 15px; height: 15px; color: var(--blue); }

/* ============ marquee ============ */
.marqueeWrap { padding: 28px 0 40px; }
.eyebrow {
  text-align: center;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: #9ca3af;
  margin: 0 0 22px;
  font-weight: 500;
}
.marquee {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marqueeTrack {
  display: flex;
  gap: 12px;
  width: max-content;
  animation: scroll 32s linear infinite;
}
@keyframes scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 14px;
  font-weight: 500;
  color: #374151;
  background: #fff;
  border: 1px solid var(--line);
  padding: 9px 16px;
  border-radius: 999px;
}
.up { color: #16a34a; font-weight: 700; }
.down { color: #dc2626; font-weight: 700; }

/* ============ headings ============ */
.badge {
  display: inline-block;
  font-size: 12px;
  color: #6b7280;
  background: #fff;
  border: 1px solid var(--line);
  padding: 5px 13px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.h2 {
  font-size: 44px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 18px;
}
.sub {
  font-size: 16px;
  color: #6b7280;
  max-width: 620px;
  margin: 0 auto 48px;
  line-height: 1.55;
}

/* ============ cards / grids ============ */
.grid4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  text-align: left;
}
.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  text-align: left;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.06);
}
.cardIcon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 11px;
  background: #eef6fe;
  color: var(--blue);
  margin-bottom: 30px;
}
.cardIconSm {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: #eef6fe;
  color: var(--blue);
}
.iconSvg { width: 21px; height: 21px; }
.cardTitle {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.cardTitleSm { font-size: 15px; font-weight: 700; margin: 0 0 4px; }
.cardText {
  font-size: 14px;
  line-height: 1.55;
  color: #6b7280;
  margin: 0;
}
.cardRow {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 20px;
}

/* steps */
.stepCard { background: linear-gradient(180deg, #fafafa, #f3f3f2); }
.stepHead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 34px;
}
.stepNum {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: #9ca3af;
  font-weight: 600;
}
.stepDot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); }

/* ============ compare ============ */
.compare {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: left;
}
.compareHead, .compareRow {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.compareHead { border-bottom: 1px solid var(--line); }
.compareLabel, .compareLabelBlue {
  font-size: 11px;
  letter-spacing: 0.12em;
  font-weight: 600;
  padding: 16px 26px;
  color: #9ca3af;
}
.compareLabelBlue { color: var(--blue-600); border-left: 1px solid var(--line); }
.compareRow { border-top: 1px solid #f1f1f0; }
.compareOld, .compareNew {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 26px;
  font-size: 15px;
}
.compareOld { color: #9ca3af; }
.compareNew {
  color: var(--ink);
  font-weight: 500;
  border-left: 1px solid var(--line);
}
.compareNew .check { color: var(--blue); }
.minus { color: #c4c4c4; }

/* ============ metrics ============ */
/* flex grid so the last (incomplete) row stays centered instead of left-aligned */
.metricsGrid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
  text-align: left;
}
.metricsGrid .card {
  flex: 0 1 calc(25% - 13.5px);
}
.metricLabel {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 11px;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: #9ca3af;
  margin-bottom: 18px;
}
.metricLabel i { width: 6px; height: 6px; border-radius: 50%; background: var(--blue); }
.metricTitle {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 8px;
}

/* ============ faq (pure CSS via <details>) ============ */
.faq { text-align: left; margin-top: 8px; }
.faqItem { border-bottom: 1px solid #e2e2e1; }
.faqItem summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--ink);
  padding: 26px 4px;
}
.faqItem summary::-webkit-details-marker { display: none; }
.faqToggle {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 20px;
  line-height: 1;
  background: #e5e5e4;
  color: #4b5563;
  transition: background 0.15s ease, color 0.15s ease;
}
.faqToggle::before { content: '+'; }
.faqItem[open] .faqToggle { background: var(--blue); color: #fff; }
.faqItem[open] .faqToggle::before { content: '\2212'; } /* minus */
.faqA {
  font-size: 15px;
  line-height: 1.6;
  color: #6b7280;
  max-width: 720px;
  margin: 0 4px 28px;
}

/* ============ cta ============ */
.ctaWrap { padding: 40px 0 100px; }
.cta {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  border-radius: 28px;
  background: #07090d;
  overflow: hidden;
  padding: 96px 24px;
}
.ctaGlow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 22%, rgba(29, 155, 240, 0.55), transparent 42%),
    radial-gradient(circle at 18% 80%, rgba(18, 90, 180, 0.5), transparent 45%);
}
.ctaInner { position: relative; z-index: 1; text-align: center; }
.ctaPill {
  display: inline-block;
  font-size: 13px;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  padding: 7px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
}
.ctaTitle {
  font-size: 46px;
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #fff;
  margin: 0 0 22px;
}
.ctaText {
  font-size: 17px;
  color: #9aa4b2;
  margin: 0 auto 34px;
  max-width: 520px;
  line-height: 1.55;
}
.ctaInner .heroBtns { justify-content: center; }

/* ============ footer ============ */
.footer {
  border-top: 1px solid #e2e2e1;
  background: #ededec;
  padding: 40px 0 32px;
}
.footerInner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footerNav {
  display: flex;
  gap: 28px;
  font-size: 15px;
  color: #4b5563;
}
.footerNav a:hover { color: var(--blue-600); }
.social { display: flex; gap: 10px; }
.socialBtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: #fff;
  color: #4b5563;
}
.socialBtn svg { width: 17px; height: 17px; }
.socialBtn:hover { color: var(--blue-600); }
.copyright { font-size: 13px; color: #9ca3af; margin: 18px 0 0; }

/* ============ responsive ============ */
@media (max-width: 980px) {
  .grid4 { grid-template-columns: repeat(2, 1fr); }
  .grid3 { grid-template-columns: repeat(2, 1fr); }
  .metricsGrid .card { flex: 0 1 calc(50% - 9px); }
  .h1 { font-size: 46px; }
  .h2 { font-size: 34px; }
  .ctaTitle { font-size: 34px; }
  .navLinks { display: none; }
}
@media (max-width: 560px) {
  .grid4, .grid3 { grid-template-columns: 1fr; }
  .metricsGrid .card { flex: 0 1 100%; }
  .footerInner { flex-direction: column; align-items: flex-start; }
  .h1 { font-size: 38px; }
}

/* ============ case study pages ============ */
.csHero {
  padding: 60px 0 48px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
}
.csHeroInner {
  max-width: 840px;
  margin: 0 auto;
  padding: 0 24px;
}
.csBack {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--blue-600);
  margin-bottom: 22px;
}
.csBack:hover { text-decoration: underline; }
.csTitle {
  font-size: 40px;
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 22px;
}
.csMeta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--muted);
}
.csMeta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
}
.csMeta b { color: var(--ink); font-weight: 600; }

.csArticle {
  max-width: 840px;
  margin: 0 auto;
  padding: 56px 24px 40px;
}
.csArticle h2 {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 44px 0 14px;
}
.csArticle h2:first-child { margin-top: 0; }
.csArticle h3 {
  font-size: 18px;
  font-weight: 700;
  margin: 28px 0 10px;
}
.csArticle p {
  font-size: 16px;
  line-height: 1.7;
  color: #374151;
  margin: 0 0 16px;
}
.csArticle ul {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}
.csArticle li {
  position: relative;
  padding-left: 26px;
  font-size: 16px;
  line-height: 1.65;
  color: #374151;
  margin-bottom: 10px;
}
.csArticle li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
}
.csResults {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 28px 14px;
  margin: 24px 0 8px;
}
.csStats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 8px 0 40px;
}
.csStat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.csStatNum {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--blue-600);
  margin: 0 0 6px;
}
.csStatLabel { font-size: 13px; color: var(--muted); margin: 0; }
@media (max-width: 700px) {
  .csTitle { font-size: 30px; }
  .csStats { grid-template-columns: 1fr; }
}