/* contakt.app — company umbrella site. Builds on contakt-theme.css tokens.
   Direction: "Ledger, elevated" — editorial, ruled, mono-annotated, with the
   product's warm atmospheric wash. Investor-grade calm; the products sell. */

*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  background: var(--ct-bg);
  color: var(--ct-text);
  font-family: var(--ct-font-text);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { text-decoration: none; }

::selection { background: var(--ct-green); color: var(--ct-logo-ink); }

.wrap {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 28px;
}

/* the ledger rails — two hairlines framing the content column */
.rails { position: relative; }

.rails::before,
.rails::after {
  content: "";
  position: fixed;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--ct-rule);
  z-index: 0;
}

.rails::before { left: max(16px, calc(50% - 580px)); }
.rails::after { right: max(16px, calc(50% - 580px)); }

@media (max-width: 760px) {
  .rails::before, .rails::after { display: none; }
}

main, header, footer { position: relative; z-index: 1; }

h1, h2, h3 {
  font-family: var(--ct-font-display);
  line-height: 1.06;
  margin: 0;
  letter-spacing: -0.02em;
}

/* mono microlabels — the ledger annotations */
.label {
  font-family: var(--ct-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ct-text-tertiary);
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 0 38px;
}

.label::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--ct-rule);
}

.label .idx { color: var(--ct-green-mid); }

/* ---- Top bar ---- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ct-bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.topbar.scrolled {
  border-bottom-color: var(--ct-hairline);
  background: color-mix(in srgb, var(--ct-bg) 88%, transparent);
}

.topbar .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
  gap: 20px;
}

.topbar .brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.topbar .brand img { width: 22px; height: 22px; }

.topbar .brand span {
  font-family: var(--ct-font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.24em;
  color: var(--ct-text);
}

.topbar .nav-wrap {
  display: flex;
  align-items: center;
  gap: 30px;
}

.topbar nav {
  display: flex;
  gap: 30px;
  font-family: var(--ct-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topbar nav a {
  color: var(--ct-text-secondary);
  transition: color 0.2s ease;
}

.topbar nav a:hover { color: var(--ct-text); }

.btn-demo {
  font-family: var(--ct-font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ct-text);
  border: 1px solid var(--ct-hairline);
  border-radius: var(--ct-radius-pill);
  padding: 9px 18px;
  transition: border-color 0.25s ease, background 0.25s ease, color 0.25s ease;
  white-space: nowrap;
}

.btn-demo:hover {
  border-color: var(--ct-text);
  background: var(--ct-text);
  color: var(--ct-surface);
}

@media (max-width: 760px) {
  .topbar nav { display: none; }
  .topbar .nav-wrap { gap: 0; }
}

/* ---- Hero: masthead + thesis + atmospheric wash ---- */

.hero {
  position: relative;
  padding: 76px 0 0;
  overflow: hidden;
}

/* the "Contakt light" — one warm green→peach wash, echoing the product header */
.hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto -20%;
  height: 620px;
  background:
    radial-gradient(1100px 560px at 74% -12%, rgba(97, 237, 106, 0.12), transparent 58%),
    radial-gradient(820px 460px at 98% 2%, rgba(227, 154, 46, 0.07), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

.hero .wrap { position: relative; z-index: 1; }

.hero .masthead {
  width: 100%;
  display: block;
}

.hero .masthead-rule {
  border: 0;
  border-top: 1px solid var(--ct-text);
  margin: 40px 0 0;
}

.hero-row {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  gap: 56px;
  padding: 48px 0 40px;
  align-items: start;
}

@media (max-width: 900px) {
  .hero { padding-top: 52px; }
  .hero-row { grid-template-columns: 1fr; gap: 26px; padding-bottom: 32px; }
}

.hero-row .hero-kicker {
  font-family: var(--ct-font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ct-text-tertiary);
  margin: 0 0 20px;
}

.hero-row .hero-kicker b { color: var(--ct-green-mid); font-weight: 500; }

.hero-row h1 {
  font-size: clamp(34px, 5.4vw, 66px);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.hero-row .sub {
  color: var(--ct-text-secondary);
  font-size: 18px;
  margin: 0;
  padding-top: 8px;
}

.hero-row .sub strong { color: var(--ct-text); font-weight: 600; }

.hero-row .sub .rule-item {
  display: block;
  padding: 15px 0;
  border-bottom: 1px solid var(--ct-rule);
}

.hero-row .sub .rule-item:first-child { border-top: 1px solid var(--ct-rule); }

.hero-row .sub .rule-item .mono-tag {
  font-family: var(--ct-font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ct-text-tertiary);
  display: block;
  margin-bottom: 3px;
}

.hero-row .thesis {
  font-family: var(--ct-font-display);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--ct-green-deep);
  margin: 26px 0 0;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.hero-row .thesis::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--ct-green-mid);
}

/* proof rail — honest product facts set as evidence, not metrics */
.proof-rail {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ct-text);
  margin-top: 8px;
}

.proof-rail .cell {
  padding: 24px 26px 30px 0;
  border-right: 1px solid var(--ct-rule);
}

.proof-rail .cell:last-child { border-right: 0; padding-right: 0; }

.proof-rail .cell .k {
  font-family: var(--ct-font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ct-text-tertiary);
  display: block;
  margin-bottom: 8px;
}

.proof-rail .cell .v {
  font-family: var(--ct-font-display);
  font-weight: 500;
  font-size: 17px;
  color: var(--ct-text);
  letter-spacing: -0.01em;
}

@media (max-width: 900px) {
  .proof-rail { grid-template-columns: 1fr 1fr; }
  .proof-rail .cell { padding: 20px 20px 22px 0; }
  .proof-rail .cell:nth-child(2) { border-right: 0; }
  .proof-rail .cell:nth-child(1), .proof-rail .cell:nth-child(2) {
    border-bottom: 1px solid var(--ct-rule);
  }
}

/* production-proof line under the hero rail */
.hero-proof {
  display: flex;
  align-items: center;
  gap: 11px;
  font-family: var(--ct-font-mono);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--ct-text-secondary);
  margin: 22px 0 0;
}
.hero-proof .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--ct-green-mid);
  box-shadow: 0 0 0 4px rgba(47, 162, 75, 0.14);
  flex: none;
}

/* ---- Products portfolio ---- */

.products { padding: 104px 0 40px; }

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 34px;
}

@media (min-width: 900px) {
  .product-grid { grid-template-columns: 1fr 1fr; }
}

.card {
  position: relative;
  background: var(--ct-surface);
  border: 1px solid var(--ct-hairline);
  border-radius: var(--ct-radius);
  box-shadow: var(--ct-shadow-card);
  padding: 42px 42px 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.4s ease;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 26px 50px rgba(31, 35, 40, 0.14);
}

@media (max-width: 700px) {
  .card { padding: 30px 24px 0; }
}

.card .card-kicker {
  font-family: var(--ct-font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ct-text-tertiary);
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px 16px;
}

.card h2 {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  margin-bottom: 12px;
}

.card .tagline {
  color: var(--ct-text-secondary);
  font-size: 17px;
  margin: 0 0 28px;
  max-width: 32em;
}

.card ul {
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
  font-size: 15px;
  color: var(--ct-text-secondary);
}

.card ul li {
  padding: 10px 0 10px 26px;
  position: relative;
  border-top: 1px solid var(--ct-rule);
}

.card ul li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 18px;
  width: 8px;
  height: 8px;
  border: 2px solid var(--ct-green-mid);
  border-radius: 50%;
}

.card .cta { margin: auto 0 34px; }

.card .cta a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ct-font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--ct-green-deep);
  border: 1px solid var(--ct-hairline);
  border-radius: var(--ct-radius-pill);
  padding: 11px 22px;
  transition: border-color 0.25s ease, background 0.25s ease, color 0.25s ease;
}

.card .cta a:hover {
  border-color: var(--ct-green-deep);
  background: var(--ct-green-deep);
  color: #fff;
}

.card .cta a .arrow { transition: transform 0.25s ease; }
.card .cta a:hover .arrow { transform: translateX(4px); }

/* screenshot bleeds off the bottom of the card */
.card .shot {
  margin: 0 -12px -1px;
  border: 1px solid var(--ct-hairline);
  border-bottom: 0;
  border-radius: var(--ct-radius) var(--ct-radius) 0 0;
  overflow: hidden;
  background: var(--ct-bg);
  box-shadow: 0 -10px 30px rgba(31, 35, 40, 0.06);
}

.shot .chrome-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--ct-hairline);
  background: var(--ct-surface);
}

.shot .chrome-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ct-hairline);
}

.shot .chrome-bar .chrome-title {
  font-family: var(--ct-font-mono);
  font-size: 10.5px;
  color: var(--ct-text-tertiary);
  margin-left: 10px;
  letter-spacing: 0.04em;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--ct-font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  padding: 4px 13px;
  border-radius: var(--ct-radius-pill);
  background: var(--ct-green);
  color: var(--ct-logo-ink);
}

.chip .pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ct-logo-ink);
  animation: chipPulse 2.4s ease-in-out infinite;
}

@keyframes chipPulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* dark slate card — Vision echoes its dark identity */
.card--dark {
  background: linear-gradient(158deg, #35414f 0%, var(--ct-slate) 44%, #232d38 100%);
  border-color: var(--ct-slate);
  color: #ebedef;
}

.card--dark::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 200px;
  background: radial-gradient(420px 180px at 82% -30%, rgba(97, 237, 106, 0.22), transparent 70%);
  pointer-events: none;
}

.card--dark > * { position: relative; z-index: 1; }
.card--dark .card-kicker { color: #8d97a1; }
.card--dark .tagline, .card--dark ul { color: #a5adb6; }
.card--dark ul li { border-top-color: rgba(255, 255, 255, 0.09); }
.card--dark ul li::before { border-color: var(--ct-green); }

.card--dark .cta a {
  color: var(--ct-green);
  border-color: rgba(255, 255, 255, 0.18);
}

.card--dark .cta a:hover {
  border-color: var(--ct-green);
  background: var(--ct-green);
  color: var(--ct-logo-ink);
}

.card--dark .shot {
  border-color: #46535f;
  background: #16181b;
  box-shadow: 0 -10px 30px rgba(0, 0, 0, 0.35);
}

.card--dark .shot .chrome-bar { background: #1f2328; border-color: #3d4a59; }
.card--dark .shot .chrome-bar span { background: #3d4a59; }
.card--dark .shot .chrome-bar .chrome-title { color: #6f7780; }

/* ---- Principles / how we build ---- */

.principles { padding: 96px 0 40px; }

.principle-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--ct-text);
}

@media (max-width: 820px) {
  .principle-grid { grid-template-columns: 1fr; }
}

.principle {
  padding: 34px 30px 40px 0;
  border-right: 1px solid var(--ct-rule);
}

.principle:last-child { border-right: 0; padding-right: 0; }

@media (max-width: 820px) {
  .principle {
    border-right: 0;
    border-bottom: 1px solid var(--ct-rule);
    padding: 28px 0 30px;
  }
  .principle:last-child { border-bottom: 0; }
}

.principle .p-idx {
  font-family: var(--ct-font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ct-green-mid);
  display: block;
  margin-bottom: 16px;
}

.principle h3 {
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.principle p {
  color: var(--ct-text-secondary);
  font-size: 15.5px;
  margin: 0;
}

/* ---- About ---- */

.about { padding: 104px 0 56px; }

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  gap: 60px;
}

@media (max-width: 860px) {
  .about { padding-top: 80px; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
}

.about-grid .pull {
  font-family: var(--ct-font-display);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 500;
  line-height: 1.24;
  letter-spacing: -0.015em;
  margin: 0;
}

.about-grid .body {
  color: var(--ct-text-secondary);
  margin: 0;
  padding-top: 6px;
}

.about-grid .body p { margin: 0 0 16px; }

.about-grid .sig {
  font-family: var(--ct-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--ct-text-tertiary);
  margin: 4px 0 0;
}

/* ---- Contact ---- */

.contact {
  position: relative;
  padding: 96px 0 128px;
  overflow: hidden;
}

.contact::before {
  content: "";
  position: absolute;
  inset: auto -20% -40% -20%;
  height: 420px;
  background: radial-gradient(760px 340px at 30% 120%, rgba(97, 237, 106, 0.10), transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.contact .wrap { position: relative; z-index: 1; }

.contact .contact-lead {
  font-family: var(--ct-font-display);
  font-weight: 500;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.015em;
  max-width: 20em;
  margin: 0 0 30px;
}

.contact .big-mail {
  display: inline-block;
  font-family: var(--ct-font-display);
  font-weight: 700;
  font-size: clamp(28px, 5.4vw, 64px);
  letter-spacing: -0.025em;
  color: var(--ct-text);
  border-bottom: 3px solid var(--ct-green-mid);
  padding-bottom: 6px;
  transition: color 0.25s ease, border-color 0.25s ease;
  overflow-wrap: anywhere;
}

.contact .big-mail:hover { color: var(--ct-green-deep); }

.contact .aside {
  color: var(--ct-text-tertiary);
  font-size: 15px;
  margin: 24px 0 0;
  max-width: 34em;
}

/* ---- Footer ---- */

footer {
  border-top: 1px solid var(--ct-rule);
  padding: 46px 0 54px;
  background: var(--ct-surface);
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 30px;
}

.family-bar {
  font-family: var(--ct-font-display);
  font-weight: 500;
  font-size: 15px;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 12px;
}

.family-bar img { width: 16px; height: 16px; }
.family-bar .sep { color: var(--ct-text-tertiary); }
.family-bar .current { color: var(--ct-text); }
.family-bar a { color: var(--ct-green-deep); }
.family-bar a:hover { color: var(--ct-text); }

.footer-links {
  font-family: var(--ct-font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  margin: 0;
  display: flex;
  gap: 22px;
}

.footer-links a { color: var(--ct-text-secondary); }
.footer-links a:hover { color: var(--ct-text); }

/* ---- Reveal on scroll ---- */

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}

.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .card, .card .cta a, .card .cta a .arrow, .chip .pulse { transition: none; animation: none; }
}

/* ---- Privacy page ---- */

.page { padding: 80px 0 120px; }

.page h1 {
  font-size: clamp(34px, 5vw, 48px);
  margin-bottom: 28px;
}

.page p {
  color: var(--ct-text-secondary);
  max-width: 38em;
  margin: 0 0 18px;
}

.page .back {
  font-family: var(--ct-font-mono);
  font-size: 13.5px;
  margin-top: 34px;
}

.page .back a { color: var(--ct-green-deep); }
.page .back a:hover { color: var(--ct-text); }