:root {
  --c-black: #0F0F0F;
  --c-yellow: #D2D900;
  --c-gray-dark: #404040;
  --c-gray-mid: #808080;
  --c-gray-light: #F5F5F5;
  --c-white: #FFFFFF;

  --font: 'Inter', 'Helvetica Neue', Arial, sans-serif;

  --container: 1200px;
  --pad-x: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(4rem, 9vw, 7rem);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-weight: 400;
  font-size: 17px;
  line-height: 1.6;
  color: var(--c-black);
  background: var(--c-white);
  -webkit-font-smoothing: antialiased;
}

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

a { color: inherit; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ---------- Typography ---------- */
h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.08;
  margin: 0;
}

.hero-title { font-size: clamp(2.5rem, 6vw, 4.75rem); }
.section-title { font-size: clamp(2rem, 4.5vw, 3.5rem); margin-bottom: 3rem; }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-yellow);
  margin: 0 0 1.25rem;
  padding-left: 28px;
  position: relative;
}
.eyebrow::before {
  content: "";
  position: absolute;
  left: 0; top: 50%;
  width: 20px; height: 2px;
  background: var(--c-yellow);
  transform: translateY(-50%);
}
.eyebrow-dark { color: var(--c-black); }
.eyebrow-dark::before { background: var(--c-black); }

.accent-line {
  display: inline-block;
  background: var(--c-yellow);
  color: var(--c-black);
  padding: 0 0.35em;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0; z-index: 50;
  background: var(--c-black);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  gap: 2rem;
}
.brand-logo { height: 56px; width: auto; }
.site-nav {
  display: flex;
  gap: 2rem;
}
.site-nav a {
  color: var(--c-white);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  position: relative;
  padding: 0.25rem 0;
}
.site-nav a:hover { color: var(--c-yellow); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.55rem 0.65rem;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--c-white);
  margin: 4px 0;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 1rem 1.75rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s, transform 0.18s;
  text-align: center;
}
.btn-primary {
  background: var(--c-yellow);
  color: var(--c-black);
  border-color: var(--c-yellow);
}
.btn-primary:hover { transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--c-white);
  border-color: rgba(255,255,255,0.4);
}
.btn-ghost:hover {
  border-color: var(--c-yellow);
  color: var(--c-yellow);
}
.btn-dark {
  background: var(--c-black);
  color: var(--c-white);
  border-color: var(--c-black);
  margin-top: 1.25rem;
}
.btn-dark:hover {
  background: var(--c-yellow);
  color: var(--c-black);
  border-color: var(--c-yellow);
}
.btn-block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--c-black);
  color: var(--c-white);
  padding: clamp(5rem, 12vw, 9rem) 0 clamp(5rem, 12vw, 9rem);
  overflow: hidden;
}
.hero-inner { position: relative; z-index: 2; max-width: 900px; }
.hero-lead {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  color: rgba(255,255,255,0.78);
  margin: 1.75rem 0 2.5rem;
  max-width: 640px;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}
.hero-decor {
  position: absolute;
  right: -100px; top: 50%;
  transform: translateY(-50%);
  width: 520px; height: 520px;
  border: 2px solid var(--c-yellow);
  opacity: 0.18;
  pointer-events: none;
  z-index: 1;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 25% 100%, 0 60%);
}

/* ---------- Sections ---------- */
.section {
  padding: var(--section-y) 0;
}
.section-light { background: var(--c-white); color: var(--c-black); }
.section-dark { background: var(--c-black); color: var(--c-white); }

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}
.lead-text {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--c-gray-dark);
  margin: 0 0 1rem;
}
.section-dark .lead-text { color: rgba(255,255,255,0.8); }

/* ---------- Pillars ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 3rem;
}
.pillar {
  background: var(--c-black);
  padding: 2.25rem 2rem;
  position: relative;
}
.pillar-num {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--c-yellow);
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}
.pillar h3 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
  color: var(--c-white);
}
.pillar p {
  color: rgba(255,255,255,0.7);
  margin: 0;
  font-size: 1rem;
  line-height: 1.6;
}
.cta-row { text-align: center; }

/* ---------- Divize ---------- */
.divize-block {
  padding: 2.5rem 0;
  border-top: 2px solid var(--c-black);
}
.divize-block:last-of-type { border-bottom: 2px solid var(--c-black); }
.divize-head {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.divize-tag {
  background: var(--c-black);
  color: var(--c-yellow);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 0.4rem 0.85rem;
}
.divize-head h3 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
}
.divize-text {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--c-gray-dark);
  max-width: 850px;
}
.reference-box {
  margin-top: 2rem;
  padding: 1.5rem;
  background: var(--c-gray-light);
  border-left: 4px solid var(--c-yellow);
}
.reference-box h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
  color: var(--c-gray-dark);
}
.reference-placeholder {
  margin: 0;
  font-style: normal;
  color: var(--c-gray-mid);
  font-size: 1rem;
}

/* ---------- Kontakt ---------- */
.kontakt-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 4rem;
  align-items: start;
}
.kontakt-info dl {
  margin: 0;
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem 1.5rem;
}
.kontakt-info dt {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--c-yellow);
  font-weight: 600;
  padding-top: 4px;
}
.kontakt-info dd {
  margin: 0;
  font-size: 1.1rem;
  color: var(--c-white);
}
.kontakt-info a { text-decoration: none; }
.kontakt-info a:hover { color: var(--c-yellow); }

.kontakt-form {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 2.5rem;
}
.form-row {
  display: flex;
  flex-direction: column;
  margin-bottom: 1.25rem;
}
.form-row label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 0.5rem;
  color: rgba(255,255,255,0.75);
  font-weight: 600;
}
.form-row input,
.form-row textarea {
  font-family: var(--font);
  font-size: 1rem;
  background: var(--c-black);
  color: var(--c-white);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 0.9rem 1rem;
  resize: vertical;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--c-yellow);
}
.form-status {
  margin: 1rem 0 0;
  font-size: 0.95rem;
  min-height: 1.25em;
}
.form-status.ok { color: var(--c-yellow); }
.form-status.err { color: #ff6b6b; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--c-black);
  color: rgba(255,255,255,0.6);
  padding: 3rem 0 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.footer-logo { height: 52px; width: auto; }
.footer-meta { margin: 0; font-size: 0.9rem; }

@media (max-width: 600px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .grid-2,
  .pillars,
  .kontakt-grid { grid-template-columns: 1fr; }
  .hero-decor { display: none; }
  .site-nav { display: none; }
  .nav-toggle { display: block; }
  .site-nav.open {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--c-black);
    padding: 1.25rem var(--pad-x);
    gap: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .kontakt-info dl { grid-template-columns: 1fr; gap: 0.4rem 0; }
  .kontakt-info dt { margin-top: 1rem; }
}