/* ================================================================
   AERION — Unified fullscreen menu (self-contained)
   One menu shared across v1 (dark), v2 (light) and the sub-pages.
   - Two version groups: Classic (v1 · dark) and Isometric (v2 · light)
   - Shared sub-pages + language switch
   - Everything fits ONE screen, no scroll
   Scoped with the `um-` prefix so it never collides with page CSS.
================================================================ */

/* ---- Trigger button (sits in each page's top bar) ---- */
.um-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono, "JetBrains Mono", ui-monospace, monospace);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #11130F;                                /* light pages (default) */
  border: 1px solid rgba(17, 19, 15, 0.28);
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
[data-version="v1"] .um-trigger,
[data-theme="dark"] .um-trigger {                /* dark page / dark mode */
  color: #EFEAE0;
  border-color: rgba(239, 234, 224, 0.28);
}
.um-trigger:hover { background: #4B7755; color: #fff; border-color: #4B7755; }
.um-trigger-bars { display: inline-flex; flex-direction: column; gap: 3px; width: 16px; }
.um-trigger-bars span { display: block; height: 1.5px; background: currentColor; transition: transform .3s ease; }
.um-trigger-bars span:last-child { width: 70%; }

/* ---- Overlay ---- */
.um-overlay {
  position: fixed;
  inset: 0;
  z-index: 100000;
  opacity: 0;
  visibility: hidden;
  transition: opacity .55s cubic-bezier(.16,1,.3,1), visibility .55s;
}
.um-overlay.is-open { opacity: 1; visibility: visible; }

.um-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(75,119,85,0.22), transparent 55%),
    radial-gradient(90% 80% at 0% 110%, rgba(75,119,85,0.14), transparent 55%),
    #0B0B0B;
}

.um-panel {
  position: relative;
  height: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: clamp(20px, 4.5vh, 56px) clamp(22px, 5vw, 72px);
  display: flex;
  flex-direction: column;
  color: #EFEAE0;
  font-family: var(--font-mono, "JetBrains Mono", ui-monospace, monospace);
}

/* entrance stagger */
.um-stagger { opacity: 0; transform: translateY(18px); transition: opacity .6s cubic-bezier(.16,1,.3,1), transform .6s cubic-bezier(.16,1,.3,1); }
.um-overlay.is-open .um-stagger { opacity: 1; transform: none; }
.um-overlay.is-open .um-stagger:nth-child(1) { transition-delay: .08s; }
.um-overlay.is-open .um-stagger:nth-child(2) { transition-delay: .14s; }
.um-overlay.is-open .um-stagger:nth-child(3) { transition-delay: .20s; }

/* top bar */
.um-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.um-brand {
  font-size: 13px;
  letter-spacing: 0.42em;
  color: #EFEAE0;
}
.um-close {
  background: none;
  border: 1px solid rgba(239,234,224,0.28);
  color: #EFEAE0;
  border-radius: 999px;
  padding: 9px 16px;
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: background .3s ease, color .3s ease, border-color .3s ease;
}
.um-close:hover { background: #EFEAE0; color: #0B0B0B; border-color: #EFEAE0; }

/* main grid — centred vertically, fills the middle band */
.um-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 6vw, 96px);
  align-content: center;
  padding-block: clamp(20px, 4vh, 48px);
}
.um-kicker {
  display: block;
  font-size: 10px;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: #8BE3A0;
  margin-bottom: clamp(16px, 2.4vh, 28px);
}

/* version cards */
.um-versions { display: flex; flex-direction: column; gap: 14px; }
.um-version {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 18px;
  padding: clamp(16px, 2.4vh, 24px) 20px;
  border: 1px solid rgba(239,234,224,0.14);
  border-radius: 14px;
  transition: border-color .35s ease, background .35s ease, transform .35s ease;
}
.um-version:hover { border-color: #4B7755; background: rgba(75,119,85,0.10); transform: translateX(4px); }
.um-version-num { font-size: 12px; letter-spacing: 0.2em; color: #6E9C78; }
.um-version-name {
  font-family: var(--font-display, "Cormorant Garamond", Georgia, serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1;
  color: #EFEAE0;
}
.um-version-meta { font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: #8E897E; }
.um-version.is-current { border-color: rgba(139,227,160,0.4); background: rgba(75,119,85,0.08); }
.um-version.is-current .um-version-name { color: #8BE3A0; }
.um-version .um-ext {
  display: inline-block;
  font-size: 9px;
  letter-spacing: 0.16em;
  color: #8E897E;
  margin-left: 8px;
}

/* page links */
.um-pages { display: flex; flex-direction: column; }
.um-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: clamp(14px, 2.2vh, 22px) 4px;
  border-top: 1px solid rgba(239,234,224,0.12);
  transition: padding-left .35s cubic-bezier(.16,1,.3,1), color .3s ease;
}
.um-link:last-child { border-bottom: 1px solid rgba(239,234,224,0.12); }
.um-link:hover { padding-left: 16px; }
.um-link-num { font-size: 11px; letter-spacing: 0.2em; color: #6E9C78; }
.um-link-label {
  font-family: var(--font-display, "Cormorant Garamond", Georgia, serif);
  font-style: italic;
  font-weight: 500;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  color: #EFEAE0;
  transition: color .3s ease;
}
.um-link:hover .um-link-label { color: #8BE3A0; }
.um-link-arrow { color: #6E9C78; opacity: 0; transform: translateX(-8px); transition: opacity .3s ease, transform .3s ease; }
.um-link:hover .um-link-arrow { opacity: 1; transform: none; }
.um-link.is-current .um-link-label { color: #8BE3A0; }
.um-link.is-current .um-link-num { color: #8BE3A0; }

/* foot — language + contact */
.um-foot {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(239,234,224,0.12);
  padding-top: clamp(16px, 2.4vh, 28px);
}
.um-lang-btns { display: inline-flex; gap: 8px; }
.um-lang-btns button {
  background: none;
  border: 1px solid rgba(239,234,224,0.2);
  color: #8E897E;
  border-radius: 999px;
  padding: 7px 14px;
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  letter-spacing: 0.16em;
  transition: color .3s ease, border-color .3s ease, background .3s ease;
}
.um-lang-btns button:hover { color: #EFEAE0; border-color: rgba(239,234,224,0.5); }
.um-lang-btns button.is-active { color: #0B0B0B; background: #8BE3A0; border-color: #8BE3A0; }
.um-contact { text-align: right; }
.um-contact a { color: #EFEAE0; font-size: 13px; letter-spacing: 0.04em; transition: color .3s ease; }
.um-contact a:hover { color: #8BE3A0; }

/* ---- Mobile ---- */
@media (max-width: 720px) {
  .um-grid {
    grid-template-columns: 1fr;
    gap: clamp(22px, 5vh, 40px);
    align-content: start;
    padding-top: clamp(16px, 4vh, 36px);
  }
  .um-version-name { font-size: 1.6rem; }
  .um-link-label { font-size: 1.5rem; }
  .um-foot { gap: 18px; }
  .um-contact { text-align: left; }
}
@media (max-height: 560px) {
  .um-version { padding-block: 10px; }
  .um-link { padding-block: 10px; }
}

/* ================================================================
   LIGHT MENU — applied on the iso/light pages (index,
   technology, company). The classic page (data-version="classic")
   keeps the dark menu. Cream ground, ink text, sage accents.
================================================================ */
[data-version="iso"] .um-backdrop {
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(75,119,85,0.14), transparent 55%),
    radial-gradient(90% 80% at 0% 110%, rgba(75,119,85,0.08), transparent 55%),
    #F4F0E8;
}
[data-version="iso"] .um-panel { color: #1c1e18; }
[data-version="iso"] .um-brand { color: #1c1e18; }
[data-version="iso"] .um-kicker { color: #4B7755; }

[data-version="iso"] .um-close {
  border-color: rgba(28,30,24,0.28);
  color: #1c1e18;
}
[data-version="iso"] .um-close:hover { background: #1c1e18; color: #F4F0E8; border-color: #1c1e18; }

[data-version="iso"] .um-version { border-color: rgba(28,30,24,0.16); }
[data-version="iso"] .um-version:hover { border-color: #4B7755; background: rgba(75,119,85,0.08); }
[data-version="iso"] .um-version-num { color: #4B7755; }
[data-version="iso"] .um-version-name { color: #1c1e18; }
[data-version="iso"] .um-version-meta { color: #6a665b; }
[data-version="iso"] .um-version.is-current { border-color: rgba(75,119,85,0.45); background: rgba(75,119,85,0.06); }
[data-version="iso"] .um-version.is-current .um-version-name { color: #2F4F38; }
[data-version="iso"] .um-version .um-ext { color: #6a665b; }

[data-version="iso"] .um-link { border-top-color: rgba(28,30,24,0.14); }
[data-version="iso"] .um-link:last-child { border-bottom-color: rgba(28,30,24,0.14); }
[data-version="iso"] .um-link-num { color: #4B7755; }
[data-version="iso"] .um-link-label { color: #1c1e18; }
[data-version="iso"] .um-link:hover .um-link-label { color: #2F4F38; }
[data-version="iso"] .um-link-arrow { color: #4B7755; }
[data-version="iso"] .um-link.is-current .um-link-label { color: #2F4F38; }
[data-version="iso"] .um-link.is-current .um-link-num { color: #2F4F38; }

[data-version="iso"] .um-foot { border-top-color: rgba(28,30,24,0.14); }
[data-version="iso"] .um-lang-btns button { border-color: rgba(28,30,24,0.2); color: #6a665b; }
[data-version="iso"] .um-lang-btns button:hover { color: #1c1e18; border-color: rgba(28,30,24,0.5); }
[data-version="iso"] .um-lang-btns button.is-active { color: #F4F0E8; background: #4B7755; border-color: #4B7755; }
[data-version="iso"] .um-contact a { color: #1c1e18; }
[data-version="iso"] .um-contact a:hover { color: #2F4F38; }

/* ================================================================
   DARK-MODE OVERRIDE (overrides the [data-version="iso"] cream menu
   when the page is in dark mode — runs across every page that adopts
   the theme attribute)
================================================================ */
[data-theme="dark"] .um-backdrop {
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(75,119,85,0.22), transparent 55%),
    radial-gradient(90% 80% at 0% 110%, rgba(75,119,85,0.14), transparent 55%),
    #0B0B0B;
}
[data-theme="dark"] .um-panel,
[data-theme="dark"] .um-brand,
[data-theme="dark"] .um-version-name,
[data-theme="dark"] .um-version.is-current .um-version-name,
[data-theme="dark"] .um-link-label,
[data-theme="dark"] .um-link.is-current .um-link-label,
[data-theme="dark"] .um-link.is-current .um-link-num,
[data-theme="dark"] .um-contact a { color: #EFEAE0; }
[data-theme="dark"] .um-kicker,
[data-theme="dark"] .um-version-num,
[data-theme="dark"] .um-link-num,
[data-theme="dark"] .um-link-arrow { color: #6E9C78; }
[data-theme="dark"] .um-version-meta,
[data-theme="dark"] .um-version .um-ext { color: #8E897E; }
[data-theme="dark"] .um-close {
  border-color: rgba(239,234,224,0.28); color:#EFEAE0;
}
[data-theme="dark"] .um-close:hover { background:#EFEAE0; color:#0B0B0B; border-color:#EFEAE0; }
[data-theme="dark"] .um-version { border-color: rgba(239,234,224,0.14); }
[data-theme="dark"] .um-version:hover { border-color: #4B7755; background: rgba(75,119,85,0.10); }
[data-theme="dark"] .um-version.is-current { border-color: rgba(139,227,160,0.40); background: rgba(75,119,85,0.10); }
[data-theme="dark"] .um-link { border-top-color: rgba(239,234,224,0.10); }
[data-theme="dark"] .um-link:last-child { border-bottom-color: rgba(239,234,224,0.10); }
[data-theme="dark"] .um-foot { border-top-color: rgba(239,234,224,0.10); }
[data-theme="dark"] .um-lang-btns button { border-color: rgba(239,234,224,0.18); color:#BCB9B1; }
[data-theme="dark"] .um-lang-btns button:hover { color:#EFEAE0; border-color: rgba(239,234,224,0.45); }
[data-theme="dark"] .um-lang-btns button.is-active { color:#0B0B0B; background:#8BE3A0; border-color:#8BE3A0; }