/* Shared gallery navigation (nav.js): back to galleries, album switcher, mode switcher, end prompt. */

@view-transition { navigation: auto; }

/* Hub cover → album: the clicked cover morphs into the mode's main stage (see index.html). */
[data-vt-hero] { view-transition-name: album-hero; }
/* The card's cover and the stage have different proportions: both are cropped to the moving box (not stretched) */
::view-transition-old(album-hero), ::view-transition-new(album-hero) { height: 100%; object-fit: cover; overflow: clip; }

:root {
    --gnav-top: 20px;
    --gnav-x: clamp(16px, 3vw, 32px);
    --gnav-end-b: 28px;
    --gnav-glass: rgba(16, 19, 17, .62);
    --gnav-solid: #121614;
    --gnav-border: rgba(255, 255, 255, .1);
    --gnav-text: #e9ede9;
    --gnav-muted: #97a299;
    --gnav-faint: #808a83; /* ≥ 4.5:1 on the dark background (WCAG AA for small text) */
    --gnav-accent: #9be07a;
    --gnav-ease: cubic-bezier(.2, .7, .2, 1);
}

/* The bar sits in the same place in every mode; each mode's own top-right controls use
   --gnav-top / --gnav-x too, so they line up with it. Only the end-of-album prompt offset differs. */
html[data-gmode="cinema"] { --gnav-end-b: 128px; }
html[data-gmode="canvas"] { --gnav-end-b: 96px; }
html[data-gmode="spatiu"] { --gnav-end-b: 132px; }

.gnav {
    position: fixed;
    z-index: 60;
    top: calc(var(--gnav-top) + env(safe-area-inset-top));
    left: calc(var(--gnav-x) + env(safe-area-inset-left));
    right: calc(var(--gnav-x) + env(safe-area-inset-right));
    height: 40px;
    display: flex;
    align-items: center;
    pointer-events: none;
    font: 500 13px/1 'Geist', ui-sans-serif, system-ui, sans-serif;
    color: var(--gnav-text);
    view-transition-name: gnav;
    transition: opacity .4s var(--gnav-ease), translate .4s var(--gnav-ease);
}
.gnav > * { pointer-events: auto; }
html.gnav-off .gnav { opacity: 0; translate: 0 -10px; pointer-events: none; }
html.gnav-off .gnav > * { pointer-events: none; }

.gnav-l { display: flex; align-items: center; gap: 8px; min-width: 0; }
/* The about logo (brand.css), sized to the 40px pills next to it. */
.gnav-brand { flex: none; }
.gnav-brand .brand-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: var(--gnav-glass);
    border: 1px solid var(--gnav-border);
    backdrop-filter: blur(18px) saturate(1.3);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
}
.gnav-brand:hover .brand-mark { border-color: rgba(255, 255, 255, .2); }

.gnav-pill {
    display: inline-flex;
    align-items: center;
    height: 40px;
    border-radius: 999px;
    background: var(--gnav-glass);
    border: 1px solid var(--gnav-border);
    backdrop-filter: blur(18px) saturate(1.3);
    -webkit-backdrop-filter: blur(18px) saturate(1.3);
    color: inherit;
    text-decoration: none;
}
.gnav svg { width: 18px; height: 18px; flex: none; }

.gnav-back {
    gap: 8px;
    padding: 0 16px 0 12px;
    color: var(--gnav-muted);
    transition: color .25s, border-color .25s, background-color .25s;
}
.gnav-back:hover { color: var(--gnav-text); border-color: rgba(255, 255, 255, .2); }

.gnav-album {
    gap: 9px;
    padding: 0 12px 0 14px;
    min-width: 0;
    font: inherit;
    cursor: pointer;
    transition: border-color .25s, background-color .25s;
}
.gnav-album:hover, .gnav-album[aria-expanded="true"] { border-color: rgba(255, 255, 255, .22); }
.gnav-album svg { width: 16px; height: 16px; color: var(--gnav-muted); transition: transform .3s var(--gnav-ease); }
.gnav-album[aria-expanded="true"] svg { transform: rotate(180deg); }
.gnav-dot {
    width: 8px; height: 8px; border-radius: 50%; flex: none;
    background: var(--gnav-accent);
    box-shadow: 0 0 0 3px color-mix(in oklab, var(--c) 45%, transparent), 0 0 14px color-mix(in oklab, var(--c) 80%, transparent);
}
.gnav-at {
    font: 400 19px/1 'Instrument Serif', ui-serif, Georgia, serif;
    letter-spacing: -.005em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    view-transition-name: album-title;
}
.gnav-ay { font: 400 11.5px/1 'Geist Mono', ui-monospace, monospace; color: var(--gnav-muted); }
.gnav-am { display: none; font: 400 11px/1 'Geist Mono', ui-monospace, monospace; color: var(--gnav-faint); letter-spacing: .03em; }

/* Language switch (i18n.js), the same mono pill as on about.emanueldan.ro. */
.gnav-lang, .gs-lang {
    justify-content: center;
    font: 500 12px/1 'Geist Mono', ui-monospace, monospace;
    letter-spacing: .04em;
    color: var(--gnav-muted);
    text-decoration: none;
}
.gnav-lang { flex: none; width: 40px; transition: color .25s, border-color .25s; }
.gnav-lang:hover, .gs-lang:hover { color: var(--gnav-text); border-color: rgba(255, 255, 255, .2); }
.gs-lang { font-size: 10.5px; padding: 0; }
/* The left group never runs under the centred mode switcher; the album title ellipsizes instead. */
@media (min-width: 761px) {
    .gnav-l { max-width: calc(50vw - var(--gnav-x) - 248px); }
}
@media (min-width: 761px) and (max-width: 1320px) {
    .gnav-l { max-width: calc(50vw - var(--gnav-x) - 92px); }
}

.gnav-modes {
    position: absolute;
    left: 50%;
    translate: -50% 0;
    padding: 4px;
    gap: 2px;
}
.gnav-mode {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    height: 30px;
    padding: 0 12px 0 10px;
    border-radius: 999px;
    color: var(--gnav-muted);
    text-decoration: none;
    white-space: nowrap;
    transition: color .25s, background-color .25s;
}
.gnav-mode:hover { color: var(--gnav-text); background: rgba(255, 255, 255, .06); }
.gnav-mode[aria-current="page"] { background: var(--gnav-text); color: #0b0d0c; }
.gnav-mode svg { width: 16px; height: 16px; }

.gnav a:focus-visible, .gnav button:focus-visible,
.gnav-sheet a:focus-visible, .gnav-sheet button:focus-visible,
.gnav-end a:focus-visible, .gnav-end button:focus-visible {
    outline: 2px solid var(--gnav-accent);
    outline-offset: 2px;
}

/* ---------- Sheet: galleries + modes (dropdown on desktop, bottom sheet on phones) ---------- */

.gnav-sheet { position: fixed; inset: 0; z-index: 70; }
.gnav-sheet[hidden] { display: none; }
.gs-back { position: absolute; inset: 0; background: rgba(5, 7, 6, .35); opacity: 0; transition: opacity .3s var(--gnav-ease); }
.gnav-sheet.open .gs-back { opacity: 1; }
.gs-panel {
    position: absolute;
    top: calc(var(--gnav-top) + env(safe-area-inset-top) + 50px);
    left: calc(var(--gnav-x) + env(safe-area-inset-left));
    width: min(420px, calc(100vw - 2 * var(--gnav-x)));
    max-height: calc(100vh - var(--gnav-top) - 80px);
    overflow: auto;
    overscroll-behavior: contain;
    padding: 16px;
    border-radius: 20px;
    background: color-mix(in oklab, var(--gnav-solid) 94%, transparent);
    border: 1px solid var(--gnav-border);
    backdrop-filter: blur(24px) saturate(1.3);
    -webkit-backdrop-filter: blur(24px) saturate(1.3);
    box-shadow: 0 30px 80px -30px rgba(0, 0, 0, .8);
    color: var(--gnav-text);
    font: 400 14px/1.4 'Geist', ui-sans-serif, system-ui, sans-serif;
    opacity: 0;
    translate: 0 -8px;
    transition: opacity .3s var(--gnav-ease), translate .3s var(--gnav-ease);
}
.gnav-sheet.open .gs-panel { opacity: 1; translate: 0 0; }
.gs-grip { display: none; }
.gs-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.gs-k {
    margin: 4px 4px 10px;
    font: 400 11px/1 'Geist Mono', ui-monospace, monospace;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--gnav-faint);
}
.gs-head .gs-k { margin: 0 4px; }
.gs-k span { color: var(--gnav-accent); margin-left: 6px; }
.gs-step { display: flex; gap: 4px; }
.gs-btn {
    width: 32px; height: 32px;
    display: grid; place-items: center;
    border-radius: 50%;
    border: 1px solid var(--gnav-border);
    background: transparent;
    color: var(--gnav-muted);
    cursor: pointer;
    padding: 0;
}
.gs-btn:hover { color: var(--gnav-text); border-color: rgba(255, 255, 255, .22); }
.gs-btn svg { width: 16px; height: 16px; }

.gs-albums { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 4px; }
.gs-album {
    display: grid;
    grid-template-columns: 76px 1fr;
    grid-template-rows: auto auto;
    column-gap: 14px;
    row-gap: 4px;
    align-items: center;
    padding: 8px;
    border-radius: 14px;
    color: inherit;
    text-decoration: none;
    border: 1px solid transparent;
    transition: background-color .25s, border-color .25s;
}
.gs-album:hover { background: rgba(255, 255, 255, .04); }
.gs-album[aria-current] {
    background: color-mix(in oklab, var(--c) 14%, transparent);
    border-color: color-mix(in oklab, var(--c) 40%, rgba(255, 255, 255, .1));
}
.gs-album img {
    grid-row: span 2;
    width: 76px; height: 48px;
    object-fit: cover;
    border-radius: 8px;
    background: var(--c);
}
.gs-at { font: 400 21px/1.05 'Instrument Serif', ui-serif, Georgia, serif; align-self: end; }
.gs-at em { font-style: italic; color: var(--gnav-muted); }
.gs-am { font: 400 11px/1.2 'Geist Mono', ui-monospace, monospace; color: var(--gnav-faint); align-self: start; }
.gs-album[aria-current] .gs-am { color: var(--gnav-accent); }

.gs-modes { display: grid; gap: 4px; margin-bottom: 14px; }
.gs-mode {
    display: grid;
    grid-template-columns: 20px 1fr auto;
    gap: 12px;
    align-items: center;
    height: auto;
    padding: 10px 12px;
    border-radius: 12px;
}
.gs-mode svg { width: 20px; height: 20px; }
.gs-mode b { display: block; font-weight: 500; color: var(--gnav-text); }
.gs-mode small { display: block; font-size: 12px; color: var(--gnav-faint); margin-top: 2px; white-space: normal; }
.gs-mode[aria-current="page"] { background: rgba(155, 224, 122, .1); color: var(--gnav-accent); }
.gs-mode[aria-current="page"] b { color: var(--gnav-accent); }
.gs-mode kbd {
    font: 400 11px/1 'Geist Mono', ui-monospace, monospace;
    color: var(--gnav-faint);
    border: 1px solid var(--gnav-border);
    border-radius: 6px;
    padding: 4px 6px;
}
.gs-all {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 12px 6px;
    border-top: 1px solid var(--gnav-border);
    color: var(--gnav-muted);
    text-decoration: none;
    font-size: 13px;
}
.gs-all:hover { color: var(--gnav-text); }
.gs-all svg { width: 16px; height: 16px; }

/* ---------- End of album ---------- */

.gnav-end {
    position: fixed;
    z-index: 55;
    left: 50%;
    bottom: calc(var(--gnav-end-b) + env(safe-area-inset-bottom));
    translate: -50% 16px;
    opacity: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px;
    border-radius: 20px;
    background: color-mix(in oklab, var(--gnav-solid) 90%, transparent);
    border: 1px solid var(--gnav-border);
    backdrop-filter: blur(20px) saturate(1.3);
    -webkit-backdrop-filter: blur(20px) saturate(1.3);
    box-shadow: 0 30px 70px -30px rgba(0, 0, 0, .8);
    color: var(--gnav-text);
    font: 400 13px/1.3 'Geist', ui-sans-serif, system-ui, sans-serif;
    transition: opacity .45s var(--gnav-ease), translate .45s var(--gnav-ease);
}
.gnav-end[hidden] { display: none; }
.gnav-end.open { opacity: 1; translate: -50% 0; }
.ge-next {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 6px 14px 6px 6px;
    border-radius: 15px;
    color: inherit;
    text-decoration: none;
    background: color-mix(in oklab, var(--c) 16%, transparent);
    transition: background-color .25s;
}
.ge-next:hover { background: color-mix(in oklab, var(--c) 28%, transparent); }
.ge-next img { width: 72px; height: 46px; object-fit: cover; border-radius: 10px; background: var(--c); }
.ge-txt { display: grid; gap: 3px; }
.ge-k { font: 400 10.5px/1 'Geist Mono', ui-monospace, monospace; letter-spacing: .06em; text-transform: uppercase; color: var(--gnav-muted); }
.ge-t { font: 400 24px/1 'Instrument Serif', ui-serif, Georgia, serif; }
.ge-t em { color: var(--gnav-muted); }
.ge-next svg { width: 18px; height: 18px; color: var(--gnav-accent); margin-left: 6px; }
.ge-all { padding: 0 10px; color: var(--gnav-muted); text-decoration: none; font-size: 12.5px; white-space: nowrap; }
.ge-all:hover { color: var(--gnav-text); }
.ge-x {
    width: 32px; height: 32px;
    display: grid; place-items: center;
    border-radius: 50%;
    border: 0;
    background: transparent;
    color: var(--gnav-faint);
    cursor: pointer;
    padding: 0;
}
.ge-x:hover { color: var(--gnav-text); }
.ge-x svg { width: 16px; height: 16px; }

/* Cinema keeps its caption bottom-left, so the prompt sits bottom-right above the filmstrip. */
@media (min-width: 761px) {
    html[data-gmode="cinema"] .gnav-end { left: auto; right: calc(var(--gnav-x) + env(safe-area-inset-right)); translate: 0 16px; }
    html[data-gmode="cinema"] .gnav-end.open { translate: 0 0; }
}

/* ---------- Responsive ---------- */

@media (max-width: 1320px) {
    .gnav-modes .gnav-mode span { display: none; }
    .gnav-modes .gnav-mode { padding: 0 9px; }
}

@media (max-width: 760px) {
    .gnav { right: auto; max-width: calc(100vw - 2 * var(--gnav-x) - 104px); }
    .gnav-modes { display: none; }
    .gnav-lang { display: none; }   /* on phones the switch sits in the gallery/mode sheet */
    .gnav-back { width: 40px; padding: 0; justify-content: center; }
    .gnav-back span { display: none; }
    .gnav-album { padding: 0 10px 0 12px; height: 40px; }
    .gnav-at { font-size: 17px; }
    .gnav-ay { display: none; }
    .gnav-am { display: inline; }

    .gs-panel {
        top: auto;
        bottom: 0;
        left: 0;
        width: 100%;
        max-height: 86vh;
        border-radius: 22px 22px 0 0;
        padding: 10px 14px calc(14px + env(safe-area-inset-bottom));
        translate: 0 100%;
        transition: translate .38s var(--gnav-ease), opacity .2s;
    }
    .gnav-sheet.open .gs-panel { translate: 0 0; }
    .gs-back { background: rgba(5, 7, 6, .6); }
    .gs-grip { display: block; width: 40px; height: 4px; border-radius: 2px; background: rgba(255, 255, 255, .2); margin: 0 auto 12px; }
    .gs-modes { grid-template-columns: 1fr 1fr; }
    .gs-mode { grid-template-columns: 20px 1fr; }
    .gs-mode small, .gs-mode kbd { display: none; }

    .gnav-end {
        left: var(--gnav-x);
        right: var(--gnav-x);
        translate: 0 16px;
        flex-wrap: wrap;
    }
    .gnav-end.open { translate: 0 0; }
    .ge-next { flex: 1 1 100%; }
    .ge-all { flex: 1; padding: 8px 10px; }
    .ge-t { font-size: 22px; }
}

@media (prefers-reduced-motion: reduce) {
    .gnav, .gs-back, .gs-panel, .gnav-end, .gnav-album svg { transition: none; }
    ::view-transition-group(*), ::view-transition-old(*), ::view-transition-new(*) { animation: none !important; }
}

::view-transition-group(*) { animation-duration: .55s; animation-timing-function: cubic-bezier(.2, .7, .2, 1); }

/* Arriving from the hub: the clicked card's title (hub.js names it card-title) fades out where it is, softly
   blurring, and the bar's album title, with nothing to morph from, fades in after it */
::view-transition-old(card-title):only-child { animation: vt-fade-out .3s ease both; }
::view-transition-new(album-title):only-child { animation: vt-fade-in .4s ease .2s both; }
@keyframes vt-fade-out { to { opacity: 0; filter: blur(6px); } }
@keyframes vt-fade-in { from { opacity: 0; } }

/* Touch screens: finger-sized controls (48px, comfortably above the 44px minimum tap target) */
@media (pointer: coarse) {
    .gnav { height: 48px; }
    .gnav-brand .brand-mark { width: 48px; height: 48px; border-radius: 14px; }
    .gnav-pill, .gnav-album { height: 48px; }
    .gnav-back { width: 48px; }
    .gnav-lang { width: 48px; }
    /* On a narrow screen the bar shrinks its items: the round buttons keep their full finger size, the album pill gives way */
    .gnav-brand, .gnav-back, .gnav-lang { flex-shrink: 0; }
    .gnav-back svg { width: 22px; height: 22px; }
    .gnav svg { width: 20px; height: 20px; }
    .gnav-at { font-size: 18px; }
    .gs-btn, .ge-x { width: 44px; height: 44px; }
}