/* =========================================================
   Key Enterprises — Design System
   Premium · minimal · dark · international
   ========================================================= */

:root {
  /* Palette */
  --bg:        #0A0B0D;
  --bg-2:      #101216;
  --surface:   #14171C;
  --surface-2: #191D23;
  --line:      rgba(255, 255, 255, 0.09);
  --line-2:    rgba(255, 255, 255, 0.14);

  --text:      #EDEFF2;
  --muted:     #9BA1AA;
  --muted-2:   #6E747D;

  --accent:    #6E8BFF;
  --accent-2:  #8A6BFF;
  --accent-soft: rgba(110, 139, 255, 0.14);

  /* Type */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
          Arial, "Apple Color Emoji", "Segoe UI Emoji", sans-serif;

  /* Metrics */
  --container: 1180px;
  --radius: 16px;
  --radius-sm: 10px;
  --gap: clamp(1rem, 2vw, 1.5rem);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
h1, h2, h3, h4 { line-height: 1.12; letter-spacing: -0.02em; font-weight: 600; margin: 0; }
p { margin: 0; }

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}
.section { padding-block: clamp(4.5rem, 9vw, 8rem); }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}

.lede { color: var(--muted); font-size: clamp(1.02rem, 1.4vw, 1.18rem); max-width: 60ch; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(14px);
  background: rgba(10, 11, 13, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header.is-scrolled { border-bottom-color: var(--line); }
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px;
}
.brand { display: inline-flex; align-items: baseline; gap: 0.5ch; }
.brand__name { font-size: 1rem; text-transform: uppercase; letter-spacing: 0.2em; }
.brand__name b { font-weight: 800; color: var(--text); }
.brand__name span { color: var(--muted); font-weight: 500; letter-spacing: 0.2em; }

.nav__links { display: flex; align-items: center; gap: 2.1rem; list-style: none; margin: 0; padding: 0; }
.nav__links a {
  font-size: 0.94rem; color: var(--muted); font-weight: 500;
  transition: color 0.2s var(--ease); position: relative; padding-block: 4px;
}
.nav__links a:hover, .nav__links a[aria-current="page"] { color: var(--text); }
.nav__links a[aria-current="page"]::after {
  content: ""; position: absolute; left: 0; bottom: -2px; width: 100%; height: 1px;
  background: var(--accent);
}
.nav__right { display: flex; align-items: center; gap: 1rem; }

.nav__toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line-2);
  background: transparent; border-radius: 10px; cursor: pointer; color: var(--text);
  align-items: center; justify-content: center;
}
.nav__toggle svg { width: 20px; height: 20px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.94rem; font-weight: 600; line-height: 1;
  padding: 0.85rem 1.35rem; border-radius: 999px; cursor: pointer;
  border: 1px solid transparent; transition: transform 0.25s var(--ease),
    background 0.25s var(--ease), border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: var(--text); color: #0A0B0D;
  box-shadow: 0 10px 30px -12px rgba(255, 255, 255, 0.35);
}
.btn--primary:hover { box-shadow: 0 16px 40px -14px rgba(255, 255, 255, 0.45); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--text); background: rgba(255, 255, 255, 0.04); }
.btn--accent {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #0A0B0D;
  box-shadow: 0 12px 34px -14px rgba(110, 139, 255, 0.6);
}
.btn .arrow { transition: transform 0.25s var(--ease); }
.btn:hover .arrow { transform: translateX(3px); }

/* ---------- Hero ---------- */
.hero { position: relative; padding-block: clamp(5rem, 12vw, 9rem) clamp(4rem, 8vw, 7rem); overflow: hidden; }
.hero__glow {
  position: absolute; inset: -25% -10% auto -10%; height: 720px; z-index: -1;
  overflow: hidden; pointer-events: none;
}
.hero__glow::before, .hero__glow::after {
  content: ""; position: absolute; border-radius: 50%; filter: blur(80px);
  will-change: transform;
}
.hero__glow::before {
  width: 60vw; max-width: 640px; aspect-ratio: 5 / 4; left: 4%; top: -8%;
  background: radial-gradient(circle at 50% 50%, rgba(110, 139, 255, 0.55), transparent 66%);
  opacity: 0.55; animation: auroraA 20s ease-in-out infinite;
}
.hero__glow::after {
  width: 64vw; max-width: 680px; aspect-ratio: 6 / 5; right: 2%; top: -16%;
  background: radial-gradient(circle at 50% 50%, rgba(138, 107, 255, 0.5), transparent 66%);
  opacity: 0.5; animation: auroraB 26s ease-in-out infinite;
}
@keyframes auroraA {
  0%, 100% { transform: translate(-6%, -4%) scale(1); }
  50%      { transform: translate(8%, 6%) scale(1.18); }
}
@keyframes auroraB {
  0%, 100% { transform: translate(6%, 0) scale(1.05); }
  50%      { transform: translate(-8%, 8%) scale(0.9); }
}
.hero__grid {
  position: absolute; inset: 0; z-index: -1; opacity: 0.4;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 68%);
  -webkit-mask-image: radial-gradient(circle at 50% 0%, #000 0%, transparent 68%);
}
.hero h1 {
  font-size: clamp(2.5rem, 6.2vw, 4.6rem);
  font-weight: 650;
  max-width: 16ch;
  margin-bottom: 1.5rem;
  background: linear-gradient(180deg, #FFFFFF 40%, #B9BEC7 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lede { font-size: clamp(1.08rem, 1.6vw, 1.3rem); margin-bottom: 2.3rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 3.2rem; }

.capabilities {
  display: flex; flex-wrap: wrap; gap: 0.6rem 0.7rem; align-items: center;
  padding-top: 2rem; border-top: 1px solid var(--line);
}
.capabilities span:first-child { color: var(--muted-2); font-size: 0.82rem; letter-spacing: 0.14em; text-transform: uppercase; margin-right: 0.4rem; }
.chip {
  font-size: 0.86rem; color: var(--text); padding: 0.4rem 0.9rem;
  border: 1px solid var(--line-2); border-radius: 999px; background: var(--surface);
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}
.chip:hover { border-color: rgba(110, 139, 255, 0.4); background: var(--surface-2); transform: translateY(-1px); }

/* ---------- Section heads ---------- */
.section-head { max-width: 62ch; margin-bottom: clamp(2.5rem, 5vw, 3.5rem); }
.section-head h2 { font-size: clamp(1.9rem, 3.6vw, 2.8rem); margin: 0.9rem 0 1rem; }
.section-head p { color: var(--muted); font-size: 1.05rem; }

/* ---------- Cards / grid ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: clamp(1.5rem, 2.4vw, 2rem);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease),
    background 0.35s var(--ease), box-shadow 0.35s var(--ease);
  overflow: hidden;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(110, 139, 255, 0.55), transparent);
  opacity: 0; transition: opacity 0.4s var(--ease);
}
.card:hover::before { opacity: 1; }
.card:hover {
  transform: translateY(-4px); border-color: rgba(110, 139, 255, 0.32);
  background: var(--surface-2);
  box-shadow: 0 24px 60px -32px rgba(110, 139, 255, 0.5);
}
.card__icon {
  width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center;
  background: linear-gradient(150deg, rgba(110, 139, 255, 0.22), rgba(138, 107, 255, 0.12));
  border: 1px solid rgba(110, 139, 255, 0.25);
  margin-bottom: 1.2rem; color: var(--accent);
  transition: transform 0.35s var(--ease);
}
.card:hover .card__icon { transform: translateY(-2px) scale(1.04); }
.card__icon svg { width: 22px; height: 22px; }
.card h3 { font-size: 1.2rem; margin-bottom: 0.6rem; }
.card p { color: var(--muted); font-size: 0.96rem; }
.card__num { position: absolute; top: 1.2rem; right: 1.4rem; font-size: 0.82rem; color: var(--muted-2); font-variant-numeric: tabular-nums; }

/* Feature list */
.feature-list { list-style: none; margin: 1.1rem 0 0; padding: 0; display: grid; gap: 0.65rem; }
.feature-list li { position: relative; padding-left: 1.6rem; color: var(--muted); font-size: 0.95rem; }
.feature-list li::before {
  content: ""; position: absolute; left: 0; top: 0.55em; width: 7px; height: 7px;
  border-radius: 50%; background: var(--accent);
}

/* ---------- Service detail rows ---------- */
.service-row {
  display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start; padding-block: clamp(2.5rem, 5vw, 4rem);
  border-top: 1px solid var(--line);
}
.service-row__index { font-size: 0.85rem; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; font-weight: 600; }
.service-row h3 { font-size: clamp(1.5rem, 2.6vw, 2.1rem); margin: 0.7rem 0 1rem; }
.service-row p { color: var(--muted); }

/* ---------- Partner ---------- */
.partner {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
}
.partner__col { padding: clamp(1.8rem, 3.5vw, 3rem); }
.partner__col + .partner__col { border-left: 1px solid var(--line); }
.partner__label { font-size: 0.78rem; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 1rem; }
.partner__col h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.partner__col p { color: var(--muted); font-size: 0.97rem; }
.partner-plus {
  display: grid; place-items: center; text-align: center; padding: clamp(2rem, 5vw, 3.5rem);
  border: 1px solid var(--line); border-radius: var(--radius); margin-top: var(--gap);
  background: radial-gradient(500px 200px at 50% 0%, var(--accent-soft), transparent 70%);
}
.partner-plus h3 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
.partner-plus p { color: var(--muted); max-width: 46ch; margin: 0.8rem auto 0; }

/* ---------- Stat / value strip ---------- */
.value-strip { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--gap); }
.value-strip .card p { font-size: 0.95rem; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative; border: 1px solid var(--line); border-radius: calc(var(--radius) + 6px);
  padding: clamp(2.5rem, 6vw, 4.5rem); text-align: center; overflow: hidden;
  background:
    radial-gradient(600px 240px at 50% -10%, rgba(110, 139, 255, 0.18), transparent 70%),
    var(--surface);
}
.cta-band h2 { font-size: clamp(1.8rem, 4vw, 2.9rem); max-width: 20ch; margin: 0 auto 1rem; }
.cta-band p { color: var(--muted); max-width: 48ch; margin: 0 auto 2rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(2rem, 5vw, 4rem); align-items: start; }
.contact-info h3 { font-size: 1.05rem; margin-bottom: 0.3rem; }
.contact-info a.mail { font-size: clamp(1.2rem, 2.4vw, 1.6rem); color: var(--text); font-weight: 600; }
.contact-info .divider { height: 1px; background: var(--line); margin: 1.8rem 0; }
.contact-meta { color: var(--muted); font-size: 0.95rem; }

.form { display: grid; gap: 1.1rem; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
.field { display: grid; gap: 0.5rem; }
.field label { font-size: 0.85rem; color: var(--muted); font-weight: 500; }
.field input, .field textarea, .field select {
  width: 100%; background: var(--surface); border: 1px solid var(--line-2);
  border-radius: var(--radius-sm); color: var(--text); padding: 0.85rem 1rem;
  font-family: inherit; font-size: 0.96rem; transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--accent); background: var(--surface-2);
}
.field textarea { resize: vertical; min-height: 140px; }
.form__note { font-size: 0.85rem; color: var(--muted-2); }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-block: clamp(3rem, 6vw, 4.5rem) 2rem; margin-top: 2rem; }
.footer-top { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: 2rem; margin-bottom: 3rem; }
.footer-brand p { color: var(--muted); font-size: 0.94rem; max-width: 34ch; margin-top: 1rem; }
.footer-col h4 { font-size: 0.8rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 1rem; font-weight: 600; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 0.6rem; }
.footer-col a { color: var(--muted); font-size: 0.94rem; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: var(--text); }
.footer-col .soon { color: var(--muted-2); font-size: 0.94rem; display: inline-flex; align-items: center; gap: 0.4rem; }
.footer-col .soon::after { content: "soon"; font-size: 0.62rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); border: 1px solid rgba(110,139,255,0.3); border-radius: 6px; padding: 1px 5px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 1rem 1.6rem; flex-wrap: wrap; padding-top: 1.8rem; border-top: 1px solid var(--line); color: var(--muted-2); font-size: 0.86rem; }
.footer-legal { display: inline-flex; gap: 1.2rem; }
.footer-legal a { color: var(--muted); transition: color 0.2s var(--ease); }
.footer-legal a:hover { color: var(--text); }

/* ---------- Legal document pages ---------- */
.legal { max-width: 760px; }
.legal .lede { margin-bottom: 2.5rem; }
.legal__block { padding-block: 1.6rem; border-top: 1px solid var(--line); }
.legal__block h2 { font-size: 1.15rem; margin-bottom: 0.7rem; }
.legal__block p { color: var(--muted); font-size: 0.98rem; }
.legal__block a { color: var(--text); text-decoration: underline; text-underline-offset: 3px; }
.legal__fill {
  margin-top: 0.9rem; padding: 1.1rem 1.3rem; border: 1px dashed var(--line-2);
  border-radius: var(--radius-sm); background: var(--surface); color: var(--muted);
  font-size: 0.96rem; line-height: 1.8;
}
.legal__fill b { color: var(--text); font-weight: 600; }
.legal__hint { color: var(--accent); font-size: 0.82rem; margin-top: 0.6rem; display: block; }

/* ---------- Language switch (header) ---------- */
.lang-switch { display: inline-flex; align-items: center; gap: 0.35rem; font-size: 0.82rem; }
.lang-switch button {
  background: transparent; border: none; color: var(--muted-2); cursor: pointer;
  font-weight: 600; letter-spacing: 0.06em; padding: 0.2rem 0.15rem;
  transition: color 0.2s var(--ease);
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button[aria-pressed="true"] { color: var(--accent); }
.lang-switch span { color: var(--muted-2); }

/* ---------- Language gate (entry overlay) ---------- */
body.gate-open { overflow: hidden; }
.lang-gate {
  position: fixed; inset: 0; z-index: 200; display: grid; place-items: center;
  padding: 1.5rem;
  background: rgba(6, 7, 9, 0.86);
  backdrop-filter: saturate(140%) blur(16px);
  opacity: 0; transition: opacity 0.35s var(--ease);
}
.lang-gate.is-in { opacity: 1; }
.lang-gate__card {
  width: 100%; max-width: 440px; text-align: center;
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-2); border-radius: 20px;
  padding: clamp(2rem, 5vw, 3rem);
  box-shadow: 0 40px 120px -30px rgba(0, 0, 0, 0.8);
  transform: translateY(14px) scale(0.98); transition: transform 0.4s var(--ease);
}
.lang-gate.is-in .lang-gate__card { transform: none; }
.lang-gate__brand {
  font-size: 1.05rem; font-weight: 800; letter-spacing: 0.24em; margin-bottom: 1.6rem;
}
.lang-gate__brand span { color: var(--muted); font-weight: 500; }
.lang-gate__q {
  color: var(--text); font-size: 1.05rem; font-weight: 500; line-height: 1.5;
  margin-bottom: 1.8rem; display: grid; gap: 0.2rem;
}
.lang-gate__q span { color: var(--muted); font-size: 0.92rem; }
.lang-gate__btns { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; }
.lang-gate__btns .btn { justify-content: center; width: 100%; }

/* Boot guard: hide translatable text until the language is applied (avoids flash) */
html[data-boot] [data-i18n],
html[data-boot] [data-i18n-html] { visibility: hidden; }

/* ---------- Reveal animation (subtle) ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 940px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .value-strip { grid-template-columns: 1fr; }
  .service-row { grid-template-columns: 1fr; gap: 1rem; }
  .contact-grid { grid-template-columns: 1fr; }
  .partner { grid-template-columns: 1fr; }
  .partner__col + .partner__col { border-left: none; border-top: 1px solid var(--line); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 680px) {
  .nav__links, .nav__right .btn { display: none; }
  .nav__toggle { display: inline-flex; }
  .site-header.nav-open .nav__links {
    display: flex; position: absolute; top: 74px; left: 0; right: 0; flex-direction: column;
    align-items: flex-start; gap: 0; background: var(--bg-2); border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line); padding: 0.5rem 0;
  }
  .site-header.nav-open .nav__links li { width: 100%; }
  .site-header.nav-open .nav__links a { display: block; padding: 0.95rem clamp(1.25rem, 4vw, 2.5rem); width: 100%; }
  .grid--4, .grid--3, .grid--2 { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  /* Header fits comfortably next to EN/DE + menu button */
  .brand__name { font-size: 0.86rem; letter-spacing: 0.12em; }
  .brand__name span { letter-spacing: 0.12em; }
  .nav__right { gap: 0.7rem; }
  .lang-switch { font-size: 0.78rem; }

  /* Roomier hero + calmer section rhythm on phones */
  .hero { padding-block: clamp(2.5rem, 9vw, 4rem) clamp(2.5rem, 8vw, 4rem); }
  .section { padding-block: clamp(3.5rem, 12vw, 5rem); }
}

@media (max-width: 380px) {
  .brand__name { font-size: 0.78rem; letter-spacing: 0.1em; }
  .brand__name span { letter-spacing: 0.1em; }
}

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