/* ==========================================================================
   NDI MViewer — product page
   Design language ported from rmh-digital.de
   ========================================================================== */

:root {
  /* RMH palette */
  --ink: #0A0A0B;
  --ink-800: #121316;
  --ink-750: #16171B;
  --ink-700: #1B1C20;
  --ink-600: #2A2B30;
  --paper: #EDEBE4;
  --paper-dim: #B8B7B1;
  --paper-muted: #7E7E83;
  --cobalt: #2D5BFF;
  --cobalt-bright: #5B7CFF;
  --hero-glow: #11173A;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-mono: 'Space Mono', ui-monospace, Menlo, monospace;

  /* Rhythm */
  --gutter: clamp(1.25rem, 5vw, 4rem);
  --section: clamp(5rem, 12vh, 11rem);
  --ease-rmh: cubic-bezier(.16, 1, .3, 1);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a { color: inherit; text-decoration: none; }

::selection { background: var(--cobalt); color: #fff; }

/* ---------- layout ---------- */

.container {
  margin-inline: auto;
  width: 100%;
  max-width: 80rem;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section); }
.section-tight { padding-block: calc(var(--section) * 0.6); }

/* ---------- typography ---------- */

.eyebrow {
  font-family: var(--font-mono);
  font-size: .8125rem;
  line-height: 1.1;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--cobalt-bright);
  margin: 0 0 1.5rem;
}

.display-xl {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(3rem, 9.5vw, 9rem);
  line-height: .92;
  letter-spacing: -.03em;
  margin: 0;
}

.display-lg {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6.5vw, 5.5rem);
  line-height: .95;
  letter-spacing: -.025em;
  margin: 0;
}

.display-md {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 4.2vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  margin: 0;
}

.lede {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.65;
  color: var(--paper-dim);
  max-width: 42rem;
}

.mono-label {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  border-radius: 9999px;
  padding: .8rem 1.6rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: background-color .3s var(--ease-rmh), color .3s var(--ease-rmh), border-color .3s var(--ease-rmh);
  cursor: pointer;
  border: 0;
}

.btn .arrow { transition: transform .3s var(--ease-rmh); }
.btn:hover .arrow { transform: translateX(4px); }

.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { background: var(--cobalt-bright); }

.btn-ghost {
  background: transparent;
  color: var(--paper-dim);
  border: 1px solid var(--ink-600);
}
.btn-ghost:hover { color: var(--paper); border-color: var(--paper-muted); }

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 50;
  transition: background-color .5s var(--ease-rmh), backdrop-filter .5s var(--ease-rmh);
}

.nav.scrolled {
  background: rgba(10, 10, 11, .78);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--ink-700);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1.15rem;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -.04em;
}

.brand .dot { color: var(--cobalt); }

.brand-sub {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
  white-space: nowrap;
}

@media (max-width: 480px) {
  .brand-sub { display: none; }
}

.nav-links {
  display: none;
  align-items: center;
  gap: .25rem;
  border: 1px solid var(--ink-700);
  border-radius: 9999px;
  padding: .35rem .5rem;
  background: rgba(18, 19, 22, .4);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.nav-links a {
  border-radius: 9999px;
  padding: .4rem 1rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-dim);
  transition: background-color .3s, color .3s;
}

.nav-links a:hover { background: var(--ink-700); color: var(--paper); }

.nav-cta { display: none; }

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(8rem, 18vh, 13rem);
  padding-bottom: calc(var(--section) * .55);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(120% 90% at 50% 30%, var(--hero-glow) 0%, var(--ink) 60%);
}

/* halftone LED-dot texture inside the glow (RMH signature element) */
.hero-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(91, 124, 255, .9) 1.3px, transparent 1.4px);
  background-size: 13px 13px;
  -webkit-mask-image: radial-gradient(70% 65% at 38% 42%, rgba(0,0,0,.9) 0%, rgba(0,0,0,.35) 45%, transparent 72%);
  mask-image: radial-gradient(70% 65% at 38% 42%, rgba(0,0,0,.9) 0%, rgba(0,0,0,.35) 45%, transparent 72%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  height: 40%;
  background: linear-gradient(to bottom, transparent, var(--ink));
}

.hero h1 span { display: block; }
.hero h1 .accent { color: var(--cobalt-bright); }

.hero-row {
  margin-top: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

@media (min-width: 1024px) {
  .hero-row {
    flex-direction: row;
    align-items: flex-end;
    justify-content: space-between;
  }
}

.hero-ctas {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
}

.hero-note {
  margin-top: 1rem;
  font-size: .85rem;
  color: var(--paper-muted);
}

/* stats row */

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 4rem);
}

.stat-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -.03em;
  line-height: 1;
}

.stat-label {
  margin-top: .5rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
}

/* ---------- device frames / screenshots ----------
   Screenshots are plain <img> tags inside a frame div.
   To swap in a real screenshot, replace the file in assets/screens/
   (or update the src) — the frame renders around any image. */

.frame {
  border-radius: clamp(14px, 2vw, 26px);
  border: 1px solid var(--ink-600);
  background: #000;
  padding: clamp(8px, 1.2vw, 16px);
  box-shadow:
    0 30px 80px -20px rgba(0, 0, 0, .8),
    0 0 120px -40px rgba(45, 91, 255, .35);
}

.frame img {
  width: 100%;
  height: auto;
  border-radius: clamp(8px, 1.2vw, 14px);
}

.frame-phone {
  border-radius: clamp(28px, 3vw, 44px);
  padding: clamp(10px, 1.4vw, 14px);
}

.frame-phone img { border-radius: clamp(20px, 2.2vw, 32px); }

.hero-shot {
  margin-top: clamp(3rem, 7vh, 5.5rem);
}

/* ---------- feature cards ---------- */

.cards {
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: 18px;
  overflow: hidden;
}

@media (min-width: 640px) { .cards { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .cards { grid-template-columns: repeat(4, 1fr); } }

.card {
  background: var(--ink-800);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
  transition: background-color .4s var(--ease-rmh);
}

.card:hover { background: var(--ink-750); }

.card-index {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--cobalt-bright);
}

.card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -.02em;
  margin: 1rem 0 .6rem;
}

.card p {
  margin: 0 0 1rem;
  color: var(--paper-dim);
  font-size: .95rem;
}

.card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.card li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: .45rem;
  color: var(--paper-muted);
  font-size: .875rem;
}

.card li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--cobalt);
}

/* ---------- split sections (copy + screenshot) ---------- */

.split {
  display: grid;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

@media (min-width: 1024px) {
  .split { grid-template-columns: 5fr 6fr; }
  .split.flip .split-copy { order: 2; }
}

.split h2 { margin-bottom: 1.25rem; }

.split .lede { margin-bottom: 1.75rem; }

.spec-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--ink-700);
}

.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: .85rem 0;
  border-bottom: 1px solid var(--ink-700);
  font-size: .95rem;
}

.spec-list .k {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
  white-space: nowrap;
  padding-top: .15rem;
}

.spec-list .v { color: var(--paper-dim); text-align: right; }

/* ---------- platforms strip ---------- */

.platforms {
  display: grid;
  gap: 1px;
  background: var(--ink-700);
  border: 1px solid var(--ink-700);
  border-radius: 18px;
  overflow: hidden;
}

@media (min-width: 768px) { .platforms { grid-template-columns: repeat(3, 1fr); } }

.platform {
  background: var(--ink-800);
  padding: clamp(1.5rem, 2.5vw, 2.25rem);
}

.platform h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -.02em;
  margin: 0 0 .4rem;
}

.platform p { margin: 0; color: var(--paper-muted); font-size: .9rem; }

/* ---------- pricing ---------- */

.pricing {
  display: grid;
  gap: 1.5rem;
}

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

.price-card {
  border: 1px solid var(--ink-700);
  border-radius: 22px;
  background: var(--ink-800);
  padding: clamp(1.75rem, 3vw, 2.75rem);
  display: flex;
  flex-direction: column;
}

.price-card.pro {
  border-color: var(--cobalt);
  background:
    radial-gradient(120% 100% at 80% 0%, rgba(45, 91, 255, .16) 0%, transparent 55%),
    var(--ink-800);
}

.price-card .tier {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
}

.price-card.pro .tier { color: var(--cobalt-bright); }

.price {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 4vw, 3.4rem);
  letter-spacing: -.03em;
  line-height: 1;
  margin: 1.1rem 0 .35rem;
}

.price small {
  font-family: var(--font-sans);
  font-weight: 400;
  font-size: 1rem;
  letter-spacing: 0;
  color: var(--paper-muted);
}

.price-sub { color: var(--paper-muted); font-size: .9rem; margin: 0 0 1.5rem; }

.price-card ul {
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
  flex: 1;
}

.price-card li {
  position: relative;
  padding-left: 1.4rem;
  margin-bottom: .7rem;
  color: var(--paper-dim);
  font-size: .95rem;
}

.price-card li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--cobalt-bright);
  font-weight: 700;
}

.price-fineprint {
  margin-top: 2rem;
  font-size: .8rem;
  color: var(--paper-muted);
  max-width: 52rem;
}

/* ---------- built-by band ---------- */

.builtby {
  border-block: 1px solid var(--ink-700);
  background: var(--ink-800);
}

.builtby-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 900px) {
  .builtby-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ---------- FAQ ---------- */

.faq { max-width: 52rem; }

.faq details {
  border-bottom: 1px solid var(--ink-700);
}

.faq details:first-of-type { border-top: 1px solid var(--ink-700); }

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  padding: 1.35rem 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.15rem;
  letter-spacing: -.01em;
  transition: color .3s;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  content: "+";
  font-family: var(--font-mono);
  color: var(--cobalt-bright);
  font-size: 1.3rem;
  flex-shrink: 0;
  transition: transform .3s var(--ease-rmh);
}

.faq details[open] summary::after { transform: rotate(45deg); }

.faq summary:hover { color: var(--cobalt-bright); }

.faq .answer {
  padding: 0 0 1.5rem;
  color: var(--paper-dim);
  max-width: 44rem;
}

.faq .answer p { margin: 0 0 .75rem; }

/* ---------- final CTA ---------- */

.finale {
  position: relative;
  overflow: hidden;
  text-align: center;
}

.finale-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: radial-gradient(90% 120% at 50% 100%, var(--hero-glow) 0%, var(--ink) 65%);
}

.finale-bg::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, rgba(91, 124, 255, .8) 1.3px, transparent 1.4px);
  background-size: 13px 13px;
  -webkit-mask-image: radial-gradient(60% 80% at 50% 100%, rgba(0,0,0,.7) 0%, rgba(0,0,0,.25) 50%, transparent 75%);
  mask-image: radial-gradient(60% 80% at 50% 100%, rgba(0,0,0,.7) 0%, rgba(0,0,0,.25) 50%, transparent 75%);
}

.finale .hero-ctas { justify-content: center; }

/* ---------- footer ---------- */

.footer {
  border-top: 1px solid var(--ink-700);
  padding-block: 3rem;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-links a {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
  transition: color .3s;
}

.footer-links a:hover { color: var(--paper); }

.legal {
  margin-top: 2.5rem;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--paper-muted);
  max-width: 56rem;
}

/* ---------- language switcher ---------- */

.lang-switch {
  position: relative;
}

.lang-switch summary {
  list-style: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  border: 1px solid var(--ink-600);
  border-radius: 9999px;
  padding: .45rem 1rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-dim);
  transition: color .3s, border-color .3s;
}

.lang-switch summary::-webkit-details-marker { display: none; }
.lang-switch summary::after { content: "▾"; font-size: .7em; }
.lang-switch summary:hover { color: var(--paper); border-color: var(--paper-muted); }

.lang-switch[open] summary { color: var(--paper); }

.lang-menu {
  position: absolute;
  right: 0;
  top: calc(100% + .5rem);
  z-index: 60;
  min-width: 11rem;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-radius: 14px;
  padding: .4rem;
  box-shadow: 0 20px 50px -12px rgba(0, 0, 0, .8);
}

.lang-menu a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-radius: 9px;
  padding: .45rem .75rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-dim);
  transition: background-color .2s, color .2s;
}

.lang-menu a:hover { background: var(--ink-700); color: var(--paper); }
.lang-menu a[aria-current="true"] { color: var(--cobalt-bright); }

.lang-menu .native { text-transform: none; color: var(--paper-muted); }

/* ---------- legal pages (privacy / imprint) ---------- */

.legal-hero {
  padding-top: clamp(7.5rem, 15vh, 11rem);
  padding-bottom: clamp(2rem, 4vh, 3.5rem);
}

.legal-meta {
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--paper-muted);
}

.prose {
  max-width: 46rem;
  color: var(--paper-dim);
  font-size: .975rem;
  line-height: 1.75;
  padding-bottom: var(--section);
}

.prose h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: 3rem 0 .9rem;
  padding-top: 2rem;
  border-top: 1px solid var(--ink-700);
}

.prose h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.05rem;
  letter-spacing: -.01em;
  color: var(--paper);
  margin: 1.8rem 0 .6rem;
}

.prose p { margin: 0 0 .9rem; }

.prose ul {
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
}

.prose li {
  position: relative;
  padding-left: 1.1rem;
  margin-bottom: .45rem;
}

.prose li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--cobalt);
}

.prose strong { color: var(--paper); font-weight: 600; }

.prose a {
  color: var(--cobalt-bright);
  transition: color .3s;
}

.prose a:hover { color: var(--paper); text-decoration: underline; }

.prose .crosslinks {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--ink-700);
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.prose .crosslinks a {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

/* ---------- reveal on scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .8s var(--ease-rmh), transform .8s var(--ease-rmh);
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}