* { box-sizing: border-box; }

:root {
  --paper: #FAF9F5;
  --ink: #141310;
  --ink-soft: #8A8879;
  --line: #E7E4D9;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', sans-serif;
  font-weight: 300;
  background: var(--paper);
  color: var(--ink);
  width: 100%;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.bs-serif {
  font-family: 'Lancelot', serif;
  font-weight: 400;
  letter-spacing: 0.01em;
}

.bs-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.bs-reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 1s cubic-bezier(0.16,1,0.3,1), transform 1s cubic-bezier(0.16,1,0.3,1);
}
.bs-visible { opacity: 1; transform: translateY(0); }
@media (prefers-reduced-motion: reduce) {
  .bs-reveal { transition: none; opacity: 1; transform: none; }
}

/* ---------- HEADER ---------- */
.bs-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 48px;
  background: rgba(250,249,245,0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
@media (max-width: 760px) { .bs-header { padding: 18px 24px; } }
.bs-logo { font-size: 22px; letter-spacing: 0.02em; }
.bs-nav-links { display: flex; gap: 36px; }
@media (max-width: 760px) { .bs-nav-links { display: none; } }
.bs-nav-link {
  font-size: 13px;
  font-weight: 400;
  text-decoration: none;
  opacity: 0.75;
  transition: opacity 0.3s ease;
}
.bs-nav-link:hover { opacity: 1; }
.bs-nav-cta {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border: 1px solid var(--ink);
  border-radius: 999px;
  padding: 10px 20px;
  transition: background 0.3s ease, color 0.3s ease;
}
.bs-nav-cta:hover { background: var(--ink); color: var(--paper); }
.bs-menu-btn { display: none; background: none; border: none; color: var(--ink); cursor: pointer; }
@media (max-width: 760px) { .bs-menu-btn { display: block; } }

/* ---------- shell ---------- */
.bs-inner { max-width: 740px; margin: 0 auto; padding: 0 48px; }
@media (max-width: 760px) { .bs-inner { padding: 0 24px; } }
.bs-inner-wide { max-width: 1080px; margin: 0 auto; padding: 0 48px; }
@media (max-width: 760px) { .bs-inner-wide { padding: 0 24px; } }

/* ---------- HERO ---------- */
.bs-hero {
  position: relative;
  padding: 180px 0 160px;
  text-align: center;
  overflow: hidden;
}
@media (max-width: 760px) { .bs-hero { padding: 120px 0 100px; } }
.bs-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.bs-hero-bg img {
  position: absolute;
  inset: -6%;
  width: 112%;
  height: 112%;
  object-fit: cover;
  filter: grayscale(1) contrast(1.05);
  animation: bs-drift 34s ease-in-out infinite alternate;
}
.bs-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(250,249,245,0.15) 0%, rgba(250,249,245,0.55) 78%, rgba(250,249,245,0.92) 100%);
}
@keyframes bs-drift {
  0% { transform: scale(1) translate(0, 0); }
  100% { transform: scale(1.08) translate(-1.5%, -1%); }
}
@media (prefers-reduced-motion: reduce) {
  .bs-hero-bg img { animation: none; }
}
.bs-hero-content { position: relative; z-index: 1; }
.bs-hero-content .bs-label,
.bs-hero-title,
.bs-hero-sub,
.bs-hero-link {
  text-shadow: 0 2px 18px rgba(250,249,245,0.9), 0 1px 3px rgba(250,249,245,0.9);
}
.bs-hero-title { font-size: clamp(34px, 5.2vw, 60px); line-height: 1.25; margin: 26px 0 0; }
.bs-hero-sub { margin: 28px auto 0; max-width: 420px; font-size: 15px; color: var(--ink-soft); line-height: 1.7; }
.bs-hero-link {
  margin-top: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 3px;
}
.bs-hero-link svg { transition: transform 0.35s ease; }
.bs-hero-link:hover svg { transform: translate(3px,-3px); }

/* ---------- SECTION shell ---------- */
.bs-section { padding: 130px 0; border-top: 1px solid var(--line); }
@media (max-width: 760px) { .bs-section { padding: 90px 0; } }
.bs-section.bs-tight { padding-top: 0; border-top: none; }

.bs-section-label { text-align: center; }
.bs-section-title { text-align: center; font-size: clamp(24px, 3vw, 34px); margin: 18px auto 0; max-width: 560px; }

/* ---------- WORK / LEISTUNGSBEREICHE ---------- */
.bs-work-list { margin-top: 72px; display: flex; flex-direction: column; }
.bs-work-row {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 48px;
  align-items: center;
  padding: 44px 0;
  border-top: 1px solid var(--line);
}
.bs-work-row:last-child { border-bottom: 1px solid var(--line); }
@media (max-width: 760px) { .bs-work-row { grid-template-columns: 1fr; gap: 20px; } }
.bs-work-icon {
  aspect-ratio: 4 / 3;
  background: transparent;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
}
.bs-work-text-cat { margin-bottom: 10px; }
.bs-work-text-name { font-family: 'Lancelot', serif; font-size: 26px; }
.bs-work-text-desc { margin-top: 14px; font-size: 14px; color: var(--ink-soft); line-height: 1.6; max-width: 380px; }

/* ---------- SERVICES ---------- */
.bs-services-list { margin-top: 72px; }
.bs-service-row {
  display: grid;
  grid-template-columns: 60px 180px 1fr;
  gap: 24px;
  padding: 32px 0;
  border-top: 1px solid var(--line);
  align-items: baseline;
}
.bs-service-row:last-child { border-bottom: 1px solid var(--line); }
@media (max-width: 640px) { .bs-service-row { grid-template-columns: 1fr; gap: 8px; } }
.bs-service-no { font-size: 13px; color: var(--ink-soft); }
.bs-service-title { font-family: 'Lancelot', serif; font-size: 20px; }
.bs-service-text { font-size: 14px; color: var(--ink-soft); line-height: 1.6; }

/* ---------- QUOTE ---------- */
.bs-quote {
  text-align: center;
  font-family: 'Lancelot', serif;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.5;
  max-width: 620px;
  margin: 0 auto;
}

/* ---------- CONTACT ---------- */
.bs-contact { text-align: center; }
.bs-contact-title { font-size: clamp(28px, 4vw, 46px); margin: 18px 0 0; }
.bs-contact-link {
  margin-top: 36px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Lancelot', serif;
  font-size: clamp(20px, 2.6vw, 28px);
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 5px;
}
.bs-contact-link svg { transition: transform 0.35s ease; }
.bs-contact-link:hover svg { transform: translate(4px,-4px); }

.bs-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 48px 56px;
  max-width: 1080px;
  margin: 0 auto;
  font-size: 12px;
  color: var(--ink-soft);
  flex-wrap: wrap;
  gap: 12px;
}
@media (max-width: 760px) { .bs-footer { padding: 28px 24px 48px; } }
.bs-footer a { text-decoration: none; margin-left: 18px; }
.bs-footer a:hover { color: var(--ink); }

/* ---------- MOBILE MENU ---------- */
.bs-mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 30;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}
.bs-mobile-menu.open { display: flex; }
.bs-mobile-menu a { font-family: 'Lancelot', serif; font-size: 24px; text-decoration: none; }
.bs-mobile-close {
  position: absolute;
  top: 22px;
  right: 24px;
  background: none;
  border: none;
  color: var(--ink);
  cursor: pointer;
}