/* ═══════════════════════════════════════════
   Reinhard R. Stein — Shared Stylesheet
   ═══════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d0d0f;
  --bg2:       #16161a;
  --bg3:       #1e1e24;
  --bg4:       #26262e;
  --border:    rgba(255,255,255,0.13);
  --text:      #ffffff;
  --text2:     #c0bfc7;
  --text3:     #8a8a96;
  --blue:      #E8650F;
  --blue-glow: rgba(232,101,15,0.2);
  --font:      -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Inter', sans-serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 22px;
  background: rgba(13,13,15,0.75);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-logo {
  text-decoration: none;
  display: flex;
  align-items: center;
}
.nav-logo img {
  height: 28px;
  width: auto;
  mix-blend-mode: screen;
  opacity: 0.9;
  transition: opacity 0.2s;
}
.nav-logo img:hover { opacity: 1; }
.nav-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--text2);
  font-size: 0.78rem;
  font-weight: 400;
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }
.nav-links a.nav-cta { color: var(--blue); }

/* ── Page header (subpages) ── */
.page-header {
  padding: 10rem 24px 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header-glow {
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 700px; height: 400px;
  background: radial-gradient(ellipse, rgba(72,170,255,0.1), transparent 70%);
  pointer-events: none;
}
.page-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-title {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.04;
  background: linear-gradient(180deg, #fff 0%, #a0a0aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.2rem;
}
.page-sub {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--text2);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ── Section shared ── */
.section { padding: 5rem 24px; }
.section-inner { max-width: 980px; margin: 0 auto; }
.section-eyebrow {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}
.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1rem;
}
.section-body {
  font-size: 1.05rem;
  font-weight: 300;
  color: var(--text2);
  line-height: 1.65;
  max-width: 560px;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--blue);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.7rem 1.6rem;
  border-radius: 980px;
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-family: var(--font);
  transition: background 0.2s, transform 0.2s;
}
.btn-primary:hover { background: #F07830; transform: scale(1.02); }
.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--blue);
  font-size: 0.9rem;
  font-weight: 400;
  padding: 0.7rem 1.6rem;
  text-decoration: none;
  transition: opacity 0.2s;
}
.btn-secondary:hover { opacity: 0.7; }

/* ── Divider strip ── */
.strip {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 5rem 24px;
  text-align: center;
}
.strip h2 {
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  max-width: 760px;
  margin: 0 auto;
}
.strip h2 span { color: var(--text2); font-weight: 300; }

/* ── Footer ── */
footer {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  padding: 2.5rem 24px;
}
.footer-inner {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-name {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text2);
}
.footer-logo-img {
  height: 36px;
  width: auto;
  mix-blend-mode: screen;
  opacity: 0.35;
  display: block;
  margin: 0 auto 1rem;
}
.footer-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}
.footer-links a {
  font-size: 0.78rem;
  color: var(--text3);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--blue); }
.footer-copy {
  font-size: 0.75rem;
  color: var(--text3);
  width: 100%;
  text-align: center;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.75s cubic-bezier(.22,1,.36,1),
              transform 0.75s cubic-bezier(.22,1,.36,1);
}
.reveal.visible { opacity: 1; transform: none; }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 0.3; }
  50%       { transform: translateY(5px); opacity: 1; }
}

/* ── Language switcher ── */
#langSwitcher {
  position: relative;
  margin-left: 1.2rem;
}
.lang-current {
  display: flex;
  align-items: center;
  gap: 5px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 980px;
  padding: 4px 10px 4px 8px;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text2);
  font-family: var(--font);
  transition: border-color 0.2s, background 0.2s;
  white-space: nowrap;
}
.lang-current:hover { border-color: rgba(255,255,255,0.3); background: var(--bg4); }
.lang-flag-emoji { font-size: 1rem; line-height: 1; }
.lang-chevron { width: 10px; height: 10px; color: var(--text3); transition: transform 0.2s; }
#langDropdown.open ~ .lang-current .lang-chevron,
.lang-current .lang-chevron { transform: none; }
#langDropdown.open + * .lang-chevron { transform: rotate(180deg); }

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  min-width: 140px;
  z-index: 300;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5);
}
.lang-dropdown.open { display: block; }
.lang-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  width: 100%;
  background: none;
  border: none;
  color: var(--text2);
  font-family: var(--font);
  font-size: 0.83rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}
.lang-option:hover { background: var(--bg4); color: var(--text); }
.lang-option.active { color: var(--blue); }
.lang-option-flag { font-size: 1.1rem; }

/* ── Responsive ── */
@media (max-width: 600px) {
  nav { padding: 0 16px; }
  .nav-links { gap: 1.2rem; }
  .nav-links a { font-size: 0.72rem; }
  #langSwitcher { margin-left: 0.6rem; }
  .lang-current span:last-of-type { display: none; }
}