:root {
  /* Brand tokens derived from robexalogo.jpeg (cyan → royal blue → violet, navy typography) */
  --ink: #0c1929;
  --ink-soft: #4a5f7a;
  --cyan: #38bdf8;
  --blue: #2563eb;
  --blue-deep: #1d4ed8;
  --violet: #7c3aed;
  --navy: #0f172a;
  --bg: #f4f7fc;
  --bg-elevated: #eef2fb;
  --panel: #ffffff;
  --primary: var(--blue);
  --primary-strong: var(--blue-deep);
  --accent: var(--violet);
  --accent-soft: #ede9fe;
  --brand-gradient: linear-gradient(105deg, var(--cyan) 0%, var(--blue) 48%, var(--violet) 100%);
  --border: #d4dce8;
  --border-strong: #c3cee0;
  --shadow: 0 12px 36px rgba(15, 23, 42, 0.08);
  --shadow-card: 0 10px 28px rgba(37, 99, 235, 0.06);
  --header-bg: rgba(244, 247, 252, 0.92);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Inter", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
}

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

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

.container {
  width: min(1120px, calc(100% - 2.5rem));
  margin: 0 auto;
}

.narrow {
  width: min(820px, calc(100% - 2.5rem));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

.nav {
  min-height: clamp(4.25rem, 10vw, 5.25rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 2vw, 1rem);
  min-width: 0;
}

.brand-logo {
  flex-shrink: 0;
  width: auto;
  height: clamp(3rem, 11vw, 4.5rem);
  max-height: 4.5rem;
  max-width: min(11rem, 34vw);
  border-radius: 12px;
  object-fit: contain;
  object-position: left center;
  box-shadow: var(--shadow-card);
  background: var(--panel);
  border: 1px solid var(--border);
}

.brand-name {
  font-size: clamp(1.05rem, 2.8vw, 1.35rem);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--navy);
  line-height: 1.1;
}

.language-switch {
  display: inline-flex;
  flex-shrink: 0;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  overflow: hidden;
  background: var(--bg-elevated);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.05);
}

.lang-btn {
  border: 0;
  background: transparent;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.85rem;
  padding: 0.5rem 0.95rem;
  cursor: pointer;
  transition: color 160ms ease, background 160ms ease;
}

.lang-btn:hover,
.lang-btn:focus-visible {
  color: var(--navy);
  background: rgba(37, 99, 235, 0.06);
  outline: none;
}

.lang-btn.is-active {
  background: var(--brand-gradient);
  color: #fff;
  text-shadow: 0 1px 0 rgba(15, 23, 42, 0.12);
}

.hero {
  padding: 5.5rem 0 4rem;
  position: relative;
  background:
    radial-gradient(120% 85% at 12% -30%, rgba(56, 189, 248, 0.14), transparent 55%),
    radial-gradient(95% 75% at 92% -10%, rgba(124, 58, 237, 0.1), transparent 52%);
}

.kicker {
  display: inline-block;
  margin: 0 0 1rem;
  border: 1px solid var(--border-strong);
  color: var(--blue-deep);
  background: linear-gradient(135deg, #eff6ff 0%, #eef2ff 100%);
  font-weight: 600;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.85) inset;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 20ch;
}

.hero-copy {
  margin-top: 1.25rem;
  max-width: 70ch;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  line-height: 1.75;
}

.section {
  padding: 1.8rem 0 2.7rem;
}

h2 {
  font-size: clamp(1.45rem, 3vw, 2rem);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
  color: var(--navy);
}

.section p {
  color: var(--ink-soft);
  line-height: 1.8;
  font-size: 1rem;
}

.capabilities .card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.1rem 1rem;
  box-shadow: var(--shadow-card);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.card:hover {
  border-color: rgba(37, 99, 235, 0.35);
  box-shadow: 0 14px 34px rgba(37, 99, 235, 0.1);
  transform: translateY(-1px);
}

.card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.55rem;
  color: var(--navy);
}

.card p {
  font-size: 0.94rem;
  line-height: 1.65;
}

.status-box {
  background: linear-gradient(160deg, #eef2ff 0%, #e0f2fe 100%);
  border: 1px solid var(--border-strong);
  border-radius: 16px;
  padding: 1.6rem;
  box-shadow: var(--shadow-card);
}

.cta .contact-btn {
  display: inline-block;
  margin-top: 1.1rem;
  border: 0;
  background: var(--brand-gradient);
  color: #fff;
  font-weight: 600;
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  transition: filter 180ms ease, transform 180ms ease, box-shadow 180ms ease;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.25);
}

.cta .contact-btn:hover,
.cta .contact-btn:focus-visible {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 10px 26px rgba(37, 99, 235, 0.3);
  outline: none;
}

.cta .contact-btn:disabled {
  opacity: 0.85;
  cursor: not-allowed;
}

.site-footer {
  margin-top: 2.5rem;
  border-top: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-elevated) 0%, #e8edf8 100%);
}

.footer-content {
  min-height: 72px;
  display: flex;
  align-items: center;
}

.footer-content p {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

/*
 * Fail-safe language visibility (content lives in HTML; JS only sets html[lang/data-lang]).
 * IMPORTANT: Never use a bare [data-lang="de"] selector — <html data-lang="de"> would match
 * and display:none the entire document (white screen in German).
 */
body [data-lang="de"] {
  display: none;
}

html[data-lang="de"] body [data-lang="en"] {
  display: none;
}

html[data-lang="de"] body [data-lang="de"] {
  display: block;
}

/* Kicker uses inline-block in base styles; keep the same when showing German. */
html[data-lang="de"] body [data-lang="de"].kicker {
  display: inline-block;
}

body .contact-btn[data-lang="de"] {
  display: none;
}

html[data-lang="de"] body .contact-btn[data-lang="en"] {
  display: none;
}

html[data-lang="de"] body .contact-btn[data-lang="de"] {
  display: inline-block;
}

@media (max-width: 720px) {
  .hero {
    padding-top: 4.2rem;
  }

  .container,
  .narrow {
    width: min(100%, calc(100% - 1.6rem));
  }

  .brand-name {
    font-size: clamp(0.98rem, 4.2vw, 1.12rem);
  }

  .brand-logo {
    max-width: min(9.5rem, 40vw);
    height: clamp(2.65rem, 14vw, 3.35rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .card,
  .cta .contact-btn {
    transition: none;
  }

  .card:hover,
  .cta .contact-btn:hover,
  .cta .contact-btn:focus-visible {
    transform: none;
  }
}