/* Shared directly from the approved homepage navigation/contact styles. */
:root {
  --bg-black: #050505; --bg-dark: #090a0b; --bg-surface: #111214;
  --bg-surface-elevated: #18191c; --fg-primary: #fff; --fg-secondary: #e2e4e8;
  --fg-muted: #8e9196; --fg-subtle: #565a61; --border-subtle: rgba(255,255,255,.08);
  --border-medium: rgba(255,255,255,.16); --border-active: rgba(255,255,255,.35);
  --accent-blue: #70b7ff;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Inter", "Geist", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --nav-height: 98px; --nav-height-mobile: 74px;
  --page-padding: clamp(24px, 4.5vw, 64px); --max-content-width: 1680px;
  --ease-out-expo: cubic-bezier(.16,1,.3,1); --duration-fast: .2s;
  --duration-normal: .45s; --duration-slow: .85s;
}
html { scrollbar-gutter: stable; scrollbar-width: thin; scrollbar-color: rgba(255,255,255,.16) transparent; }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) { font-family: var(--font-sans); }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) * { box-sizing: border-box; }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) :where(p,h2) { margin: 0; }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) button { background: none; border: 0; padding: 0; color: inherit; font: inherit; cursor: pointer; }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) a { text-decoration: none; }
body.menu-open,body.modal-open { overflow: hidden; }
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 100;
  background: transparent;
  transition: background-color var(--duration-normal) var(--ease-out-expo),
              backdrop-filter var(--duration-normal) var(--ease-out-expo),
              border-color var(--duration-normal) var(--ease-out-expo);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background-color: rgba(5, 5, 5, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom-color: var(--border-subtle);
}

.nav-container {
  max-width: var(--max-content-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--page-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  text-decoration: none;
  z-index: 102;
}

.brand-logo {
  height: 42px;
  width: auto;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,0.6));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(24px, 2.5vw, 44px);
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  transition: color var(--duration-fast) ease;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover,
.nav-link.is-active {
  color: #ffffff;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1.5px;
  background-color: var(--accent-blue);
  transition: width var(--duration-fast) ease;
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-cta-btn {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: #ffffff;
  padding: 8px 20px;
  border-radius: 9999px;
  border: 1px solid var(--border-medium);
  background: rgba(255, 255, 255, 0.06);
  transition: background-color var(--duration-fast) ease,
              border-color var(--duration-fast) ease,
              transform var(--duration-fast) ease;
}

.nav-cta-btn:hover {
  background-color: rgba(255, 255, 255, 0.15);
  border-color: var(--fg-primary);
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 36px;
  height: 36px;
  z-index: 102;
  cursor: pointer;
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 1.5px;
  background-color: #ffffff;
  transition: transform var(--duration-normal) var(--ease-out-expo),
              opacity var(--duration-fast) ease;
}

/* Mobile Navigation Overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background-color: var(--bg-black);
  z-index: 101;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--duration-normal) var(--ease-out-expo),
              visibility var(--duration-normal) var(--ease-out-expo);
  display: flex;
  flex-direction: column;
}

.mobile-nav-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-inner {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px var(--page-padding) 48px;
}

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: var(--nav-height-mobile);
}

.mobile-nav-close {
  font-size: 24px;
  color: var(--fg-muted);
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin: auto 0;
}

.mobile-nav-link {
  font-size: clamp(24px, 7vw, 36px);
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--fg-secondary);
  transition: color var(--duration-fast) ease;
}

.mobile-nav-link:hover {
  color: #ffffff;
}

.mobile-nav-footer {
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
}

.mobile-nav-tagline {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--fg-muted);
  margin-bottom: 6px;
}

.mobile-nav-company {
  font-size: 12px;
  color: var(--fg-subtle);
}

/* --------------------------------------------------------------------------
   07. CONTACT MODAL WINDOW
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, 0.82);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-window {
  position: relative;
  width: 100%;
  max-width: 640px;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: 4px;
  padding: clamp(32px, 5vw, 48px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.7);
  transform: scale(0.96) translateY(20px);
  transition: transform 0.4s var(--ease-out-expo);
}

.modal-backdrop.is-open .modal-window {
  transform: scale(1) translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 20px;
  color: var(--fg-muted);
  transition: color 0.2s ease;
}

.modal-close-btn:hover {
  color: #ffffff;
}

.modal-header {
  margin-bottom: 24px;
}

.modal-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 8px;
}

.modal-desc {
  font-size: 14px;
  color: var(--fg-muted);
}

.minimal-contact-form {
  width: 100%;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 32px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--fg-muted);
  text-transform: uppercase;
}

.form-group label .opt {
  color: var(--fg-subtle);
  text-transform: none;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(5, 5, 5, 0.6);
  border: 1px solid var(--border-medium);
  border-radius: 3px;
  padding: 14px 16px;
  font-family: inherit;
  font-size: 15px;
  color: #ffffff;
  transition: border-color var(--duration-fast) ease,
              background-color var(--duration-fast) ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #ffffff;
  background: rgba(18, 19, 24, 0.85);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--fg-subtle);
}

.form-action-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.submit-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: #050505;
  background-color: #ffffff;
  padding: 14px 32px;
  border-radius: 9999px;
  transition: transform var(--duration-fast) ease,
              background-color var(--duration-fast) ease;
}

.submit-btn:hover {
  background-color: var(--fg-secondary);
  transform: translateY(-2px);
}

.submit-btn .btn-arrow {
  transition: transform var(--duration-fast) ease;
}

.submit-btn:hover .btn-arrow {
  transform: translateX(4px);
}

.form-notice {
  font-size: 12px;
  color: var(--fg-subtle);
  max-width: 320px;
  line-height: 1.4;
}

.form-status {
  margin-top: 16px;
  font-size: 14px;
}

.form-status.is-success {
  color: var(--accent-blue);
}

.form-status.is-error {
  color: #ff6b6b;
}


.site-header .nav-container { width: 100%; box-sizing: border-box; }
.site-header .nav-link { min-height: 44px; display: inline-flex; align-items: center; }
.site-header .nav-cta-btn,.site-header .menu-toggle,.mobile-nav-close,.modal-close-btn { min-height: 44px; min-width: 44px; }
.nav-link[aria-current="page"],.mobile-nav-link[aria-current="page"] { color: var(--fg-primary); }
.nav-link[aria-current="page"]::after { width: 100%; }
.mobile-nav-overlay { overflow-y: auto; }
.mobile-nav-inner { min-height: 100svh; height: auto; }
.mobile-nav-list { padding-block: 16px; gap: clamp(12px, 3vh, 28px); }
.mobile-nav-link { min-height: 44px; display: inline-flex; align-items: center; }
.modal-backdrop .modal-window { max-height: calc(100svh - 48px); overflow-y: auto; }
.modal-backdrop .section-eyebrow { display: block; margin-bottom: 10px; color: var(--fg-muted); font-size: 11px; letter-spacing: .14em; }
.modal-backdrop .form-group label { color: var(--fg-secondary); }
.modal-backdrop .form-grid { margin-top: 24px; }
:where(.site-header,.mobile-nav-overlay,.modal-backdrop) :focus-visible { outline: 2px solid var(--accent-blue); outline-offset: 4px; }
@media (max-width: 1024px) {
  :root { --nav-height: 80px; }
  .nav-links,.nav-actions .nav-cta-btn { display: none; }
  .menu-toggle { display: flex; }
}
@media (max-width: 768px) {
  :root { --nav-height: 74px; }
  .modal-backdrop .form-grid { grid-template-columns: 1fr; }
  .modal-backdrop .form-action-row { flex-direction: column; align-items: flex-start; }
}
@media (max-height: 500px) {
  .mobile-nav-inner { padding-top: 8px; padding-bottom: 16px; }
  .mobile-nav-header { height: 44px; }
  .mobile-nav-list { gap: 2px; padding-block: 8px; }
  .mobile-nav-link { font-size: 24px; }
  .mobile-nav-footer { padding-top: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  :where(.site-header,.mobile-nav-overlay,.modal-backdrop) * { transition: none !important; }
}

/* Visibility switches immediately so dialog focus is available on opening. */
.mobile-nav-overlay,.modal-backdrop { transition-property: opacity; }

/* A shared shell must not inherit page-specific text metrics or button resets. */
.site-header,.mobile-nav-overlay,.modal-backdrop { font:400 16px/1.5 var(--font-sans); text-rendering:optimizeLegibility; -webkit-font-smoothing:antialiased; }
.site-header :is(.nav-link,.nav-cta-btn) { line-height:1.5; }
.site-header .nav-container { display:grid; grid-template-columns:1fr auto 1fr; }
.site-header .nav-brand { justify-self:start; }
.site-header .nav-links { justify-self:center; }
.site-header .nav-actions { justify-self:end; }
@media(max-width:1024px) { .site-header .nav-container { grid-template-columns:1fr auto; } }
/* Keep the skip link out of page flow on every route. */
.skip-link { position:fixed; top:10px; left:12px; z-index:1000; padding:10px 14px; color:#050505; background:#fff; transform:translateY(-160%); }
.skip-link:focus { transform:translateY(0); }