/* =====================================================================
   ENOCHIAN TIMEPIECE — NAVIGATION SYSTEM  (nav-enhance.css)
   Scroll progress · scroll-spy · section rail · command palette (⌘K)
   Tokens inherited from index.css (:root)
   ===================================================================== */

:root {
    /* z-index scale — documented so future layers stay predictable
       nav 50 · rail 45 · mobile menu 60 · scrollTop 90 · modals 100-120
       command palette 200 · preloader 9999                            */
    --z-rail: 45;
    --z-progress: 55;
    --z-cmdk: 200;
    --nav-h: 80px;
    --nav-h-scrolled: 70px;
}

/* ---------------------------------------------------------------
   1. SKIP LINK (a11y: keyboard users bypass the nav)
   --------------------------------------------------------------- */
.skip-link {
    position: fixed;
    top: 0;
    left: 50%;
    transform: translate(-50%, -140%);
    z-index: 300;
    padding: 0.85rem 1.5rem;
    border-radius: 0 0 0.75rem 0.75rem;
    background: var(--celestial-gold);
    color: #0a0a0a;
    font: 600 0.875rem/1 'Inter', sans-serif;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: transform 0.2s var(--ease-premium);
}
.skip-link:focus-visible,
.skip-link:focus {
    transform: translate(-50%, 0);
    outline: 2px solid #fff;
    outline-offset: -4px;
}

/* ---------------------------------------------------------------
   2. GLOBAL FOCUS RING — never remove focus, style it on-brand
   --------------------------------------------------------------- */
:where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 2px solid var(--celestial-gold);
    outline-offset: 3px;
    border-radius: 4px;
}

/* Anchor targets must clear the fixed navbar */
section[id],
#home, #concept, #mission, #book, #sync, #build, #dual-dial, #cosmology, #donate {
    scroll-margin-top: 96px;
}

/* ---------------------------------------------------------------
   3. SCROLL PROGRESS METER (transform-only → no reflow)
   --------------------------------------------------------------- */
#nav-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    z-index: var(--z-progress);
    pointer-events: none;
    background: rgba(255, 174, 0, 0.07);
}
#nav-progress > i {
    display: block;
    height: 100%;
    width: 100%;
    transform: scaleX(0);
    transform-origin: 0 50%;
    background: linear-gradient(90deg, var(--copper) 0%, var(--celestial-gold) 60%, #fff3d1 100%);
    box-shadow: 0 0 12px var(--celestial-gold-glow);
    will-change: transform;
}

/* ---------------------------------------------------------------
   4. DESKTOP NAV LINKS — active state + underline
   --------------------------------------------------------------- */
#main-nav .nav-link {
    position: relative;
    white-space: nowrap;
    color: var(--text-secondary);
    transition: color 0.22s var(--ease-premium);
    cursor: pointer;
}
#main-nav .nav-link::after {
    content: '';
    position: absolute;
    left: 0.5rem;
    right: 0.5rem;
    bottom: 0.15rem;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--celestial-gold), transparent);
    transform: scaleX(0);
    transform-origin: 50% 50%;
    transition: transform 0.25s var(--ease-premium), opacity 0.25s var(--ease-premium);
    opacity: 0;
}
#main-nav .nav-link:hover,
#main-nav .nav-link:focus-visible {
    color: #ffffff;
}
#main-nav .nav-link:hover::after,
#main-nav .nav-link:focus-visible::after {
    transform: scaleX(0.7);
    opacity: 0.6;
}
#main-nav .nav-link.is-active {
    color: var(--celestial-gold);
    text-shadow: 0 0 14px rgba(255, 174, 0, 0.35);
}
#main-nav .nav-link.is-active::after {
    transform: scaleX(1);
    opacity: 1;
}

/* Tighter rhythm so eight destinations fit one line without wrapping */
#main-nav .items-baseline { align-items: center; }
#main-nav .items-baseline > :not([hidden]) ~ :not([hidden]) { margin-left: 1.05rem; }
@media (min-width: 1280px) {
    #main-nav .items-baseline > :not([hidden]) ~ :not([hidden]) { margin-left: 1.35rem; }
}
#main-nav .nav-link { padding-left: 0.35rem; padding-right: 0.35rem; }

/* LOGO FIX — the shimmer gradient faded the "E" to fully transparent for
   most of its cycle. Keep the letter solid gold; sweep a highlight over it. */
.shimmer-text {
    background-image: linear-gradient(100deg,
        #ffae00 0%, #ffae00 38%, #fff4d2 50%, #ffae00 62%, #ffae00 100%) !important;
    background-size: 250% auto !important;
    -webkit-background-clip: text !important;
    background-clip: text !important;
}
@media (prefers-reduced-motion: reduce) {
    .shimmer-text { animation: none !important; background-image: none !important;
                    -webkit-text-fill-color: var(--celestial-gold) !important; }
}

/* Nav shrink is animated rather than snapped */
#main-nav {
    transition: height 0.3s var(--ease-premium), background-color 0.3s var(--ease-premium),
                border-color 0.3s var(--ease-premium), backdrop-filter 0.3s var(--ease-premium);
}

/* ---------------------------------------------------------------
   5. ⌘K TRIGGER BUTTON
   --------------------------------------------------------------- */
.cmdk-trigger {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    height: 36px;
    padding: 0 0.65rem 0 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 0.6rem;
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-secondary);
    font-size: 0.75rem;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all 0.22s var(--ease-premium);
}
.cmdk-trigger:hover {
    color: var(--celestial-gold);
    border-color: rgba(255, 174, 0, 0.35);
    background: rgba(255, 174, 0, 0.06);
    box-shadow: 0 0 20px rgba(255, 174, 0, 0.12);
}
.cmdk-trigger svg { width: 15px; height: 15px; flex: none; }
.cmdk-trigger kbd {
    white-space: nowrap;
    font: 600 0.65rem/1 'Roboto Mono', monospace;
    padding: 3px 5px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #d4d4d8;
}
/* Icon-only variant for mobile — 44px touch target */
.cmdk-trigger--icon {
    width: 44px;
    height: 44px;
    padding: 0;
    justify-content: center;
}

/* ---------------------------------------------------------------
   5b. SUPPORT CTA — the one primary action in the bar
   --------------------------------------------------------------- */
.nav-cta {
    display: none;
    align-items: center;
    gap: 0.45rem;
    height: 36px;
    margin-left: 0.75rem;
    padding: 0 0.95rem;
    border-radius: 0.6rem;
    background: linear-gradient(135deg, var(--celestial-gold), #ffc94d);
    color: #0a0a0a;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 0 0 rgba(255, 174, 0, 0);
    transition: box-shadow 0.25s var(--ease-premium), filter 0.25s var(--ease-premium),
                transform 0.15s var(--ease-premium);
}
@media (min-width: 768px) { .nav-cta { display: inline-flex; } }
.nav-cta:hover  { filter: brightness(1.08); box-shadow: 0 0 26px rgba(255, 174, 0, 0.45); }
.nav-cta:active { transform: scale(0.97); }
.nav-cta svg    { width: 15px; height: 15px; flex: none; }
.nav-cta__t     { display: none; }
@media (min-width: 1024px) { .nav-cta__t { display: inline; } }
/* it is a CTA, not a nav link — never give it the underline treatment */
#main-nav .nav-cta.nav-link::after { content: none; }
#main-nav .nav-cta.nav-link,
#main-nav .nav-cta.nav-link.is-active { color: #0a0a0a; text-shadow: none; }

/* Footer CTA sits on black, so it needs its own focus ring offset */
.footer-support-btn:active { transform: scale(0.985); }

/* ---------------------------------------------------------------
   6. SECTION RAIL (desktop ≥ 1280px) — vertical progress navigator
   --------------------------------------------------------------- */
#section-rail {
    position: fixed;
    top: 50%;
    right: 1.75rem;
    transform: translateY(-50%);
    z-index: var(--z-rail);
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.5rem 0.35rem;
    border-radius: 999px;
    background: rgba(10, 10, 10, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}
@media (min-width: 1280px) {
    #section-rail { display: flex; }
}
.rail-item {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: 0;
    background: none;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}
.rail-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.22);
    transition: all 0.25s var(--ease-premium);
}
.rail-item:hover .rail-dot { background: var(--celestial-gold); transform: scale(1.3); }
.rail-item.is-active .rail-dot {
    background: var(--celestial-gold);
    transform: scale(1.55);
    box-shadow: 0 0 0 4px rgba(255, 174, 0, 0.15), 0 0 14px var(--celestial-gold-glow);
}
.rail-label {
    position: absolute;
    right: calc(100% + 12px);
    white-space: nowrap;
    padding: 0.4rem 0.7rem;
    border-radius: 0.5rem;
    background: rgba(12, 12, 12, 0.95);
    border: 1px solid rgba(255, 174, 0, 0.2);
    color: #f5f5f5;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.03em;
    opacity: 0;
    transform: translateX(8px);
    pointer-events: none;
    transition: opacity 0.2s var(--ease-premium), transform 0.2s var(--ease-premium);
}
.rail-item:hover .rail-label,
.rail-item:focus-visible .rail-label { opacity: 1; transform: translateX(0); }

/* ---------------------------------------------------------------
   7. CURRENT-SECTION CHIP (shows in navbar once scrolled)
   --------------------------------------------------------------- */
#nav-crumb {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-left: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-secondary);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.25s var(--ease-premium), transform 0.25s var(--ease-premium);
    pointer-events: none;
    white-space: nowrap;
    max-width: min(38vw, 150px);
    overflow: hidden;
    text-overflow: ellipsis;
}
#nav-crumb.is-visible { opacity: 1; transform: translateY(0); }
/* Only shown while the desktop link row is collapsed — above md the active
   nav link already says where you are, so the chip would just be noise.
   Below 480px the bar is already full (logo, language, search, menu). */
@media (min-width: 768px), (max-width: 479px) { #nav-crumb { display: none; } }

/* ---------------------------------------------------------------
   8. MOBILE MENU — staggered reveal + active marker
   --------------------------------------------------------------- */
#mobile-menu {
    padding: max(1.5rem, env(safe-area-inset-top)) 1.25rem max(1.5rem, env(safe-area-inset-bottom));
}
#mobile-menu .mobile-nav-link:not(.hidden) { display: flex; }
#mobile-menu .mobile-nav-link {
    align-items: center;
    gap: 0.75rem;
    min-height: 48px;
    padding: 0.35rem 1.25rem;
    border-radius: 0.75rem;
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.35s var(--ease-premium), transform 0.35s var(--ease-premium),
                color 0.2s var(--ease-premium), background-color 0.2s var(--ease-premium);
}
#mobile-menu.is-open .mobile-nav-link { opacity: 1; transform: translateY(0); }
#mobile-menu.is-open .mobile-nav-link:nth-child(1) { transition-delay: 60ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(2) { transition-delay: 100ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(3) { transition-delay: 140ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(4) { transition-delay: 180ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(5) { transition-delay: 220ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(6) { transition-delay: 260ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(7) { transition-delay: 300ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(8) { transition-delay: 340ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(9) { transition-delay: 380ms; }
#mobile-menu.is-open .mobile-nav-link:nth-child(10) { transition-delay: 420ms; }
#mobile-menu .mobile-nav-link:active { background: rgba(255, 174, 0, 0.08); }
#mobile-menu .mobile-nav-link.is-active {
    color: var(--celestial-gold);
    background: rgba(255, 174, 0, 0.07);
    box-shadow: inset 0 0 0 1px rgba(255, 174, 0, 0.22);
}
/* index numerals come from an attribute so the i18n innerHTML swap
   can never wipe them out */
#mobile-menu .mobile-nav-link[data-idx]::before {
    content: attr(data-idx);
    font: 500 0.7rem/1 'Roboto Mono', monospace;
    color: rgba(255, 174, 0, 0.45);
    min-width: 1.6rem;
    text-align: right;
    flex: none;
}
#mobile-menu .mobile-nav-link.is-active[data-idx]::before { color: var(--celestial-gold); }

/* ---------------------------------------------------------------
   9. COMMAND PALETTE
   --------------------------------------------------------------- */
#cmdk {
    position: fixed;
    inset: 0;
    z-index: var(--z-cmdk);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: clamp(1rem, 10vh, 8rem) 1rem 1rem;
}
#cmdk[hidden] { display: none; }
.cmdk__scrim {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.72);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 0.2s var(--ease-premium);
}
#cmdk.is-open .cmdk__scrim { opacity: 1; }

.cmdk__panel {
    position: relative;
    width: 100%;
    max-width: 620px;
    max-height: min(70vh, 560px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 1rem;
    background: rgba(13, 13, 13, 0.96);
    border: 1px solid rgba(255, 174, 0, 0.18);
    box-shadow: 0 30px 90px rgba(0, 0, 0, 0.85), 0 0 60px rgba(255, 174, 0, 0.07);
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    transition: opacity 0.2s var(--ease-premium), transform 0.22s var(--ease-premium);
}
#cmdk.is-open .cmdk__panel { opacity: 1; transform: translateY(0) scale(1); }

.cmdk__head {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    flex: none;
}
.cmdk__head > svg { width: 18px; height: 18px; color: var(--celestial-gold); flex: none; }
#cmdk-input {
    flex: 1 1 auto;
    min-width: 0;
    background: none;
    border: 0;
    outline: none;
    color: #f5f5f5;
    font: 400 1rem/1.4 'Inter', sans-serif;
}
#cmdk-input::placeholder { color: #6b6b73; }
.cmdk__esc {
    font: 600 0.65rem/1 'Roboto Mono', monospace;
    padding: 4px 6px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #a1a1aa;
    flex: none;
}

.cmdk__list {
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.5rem;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 174, 0, 0.3) transparent;
}
.cmdk__list::-webkit-scrollbar { width: 6px; }
.cmdk__list::-webkit-scrollbar-thumb { background: rgba(255, 174, 0, 0.28); border-radius: 3px; }

.cmdk__group {
    padding: 0.75rem 0.75rem 0.35rem;
    font: 600 0.65rem/1 'Inter', sans-serif;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #6b6b73;
}
.cmdk__item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    min-height: 46px;
    padding: 0.55rem 0.75rem;
    border: 0;
    border-radius: 0.65rem;
    background: none;
    color: #e4e4e7;
    font: 400 0.9rem/1.3 'Inter', sans-serif;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s var(--ease-premium), color 0.15s var(--ease-premium);
}
.cmdk__item .cmdk__ico {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    flex: none;
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    transition: all 0.15s var(--ease-premium);
}
.cmdk__item .cmdk__ico svg { width: 15px; height: 15px; }
.cmdk__item .cmdk__txt { flex: 1 1 auto; min-width: 0; }
.cmdk__item .cmdk__sub {
    display: block;
    font-size: 0.72rem;
    color: #71717a;
    margin-top: 2px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cmdk__item .cmdk__hint {
    font: 500 0.68rem/1 'Roboto Mono', monospace;
    color: #52525b;
    flex: none;
    opacity: 0;
    transition: opacity 0.15s var(--ease-premium);
}
.cmdk__item[aria-selected="true"] {
    background: rgba(255, 174, 0, 0.1);
    color: #fff;
    box-shadow: inset 0 0 0 1px rgba(255, 174, 0, 0.22);
}
.cmdk__item[aria-selected="true"] .cmdk__ico {
    background: rgba(255, 174, 0, 0.14);
    border-color: rgba(255, 174, 0, 0.3);
    color: var(--celestial-gold);
}
.cmdk__item[aria-selected="true"] .cmdk__hint { opacity: 1; }
.cmdk__item mark { background: none; color: var(--celestial-gold); font-weight: 600; }

.cmdk__empty {
    padding: 2.5rem 1rem;
    text-align: center;
    color: #71717a;
    font-size: 0.875rem;
}
.cmdk__empty svg {
    width: 30px;
    height: 30px;
    margin: 0 auto 0.75rem;
    opacity: 0.4;
    display: block;
}
.cmdk-trigger__t { display: none; }
@media (min-width: 1280px) { .cmdk-trigger__t { display: inline; } }
.cmdk__foot {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 0.6rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    color: #52525b;
    font-size: 0.68rem;
    flex: none;
}
.cmdk__foot b {
    font: 600 0.65rem/1 'Roboto Mono', monospace;
    padding: 3px 5px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.06);
    color: #a1a1aa;
    margin-right: 0.3rem;
}
@media (max-width: 640px) {
    #cmdk { padding: 0.75rem 0.75rem 0; align-items: flex-end; }
    .cmdk__panel { max-height: 82vh; border-radius: 1rem 1rem 0 0; }
    .cmdk__foot { display: none; }
    #cmdk-input { font-size: 16px; } /* prevents iOS auto-zoom */
}

/* ---------------------------------------------------------------
   10. REDUCED MOTION — honour the OS preference
   --------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    #nav-progress > i,
    .rail-dot,
    .cmdk__panel,
    .cmdk__scrim,
    #mobile-menu .mobile-nav-link,
    #main-nav .nav-link::after,
    #nav-crumb {
        transition-duration: 0.01ms !important;
        transition-delay: 0ms !important;
    }
    .parallax-layer { transform: none !important; }
}