/* Subpage realm atmosphere */

.page-sub {
    --sub-realm-color: var(--color-accent);
}

.page-sub.realm-cs { --sub-realm-color: #2c4a6e; }
.page-sub.realm-words { --sub-realm-color: #5a4a3a; }
.page-sub.realm-world { --sub-realm-color: #3d5240; }
.page-sub.realm-path { --sub-realm-color: #1a1a1a; }

.page-sub .site-header a:first-child {
    transition: color 0.25s ease;
}

.page-sub .site-header a:first-child:hover,
.page-sub .site-header a.nav-item:hover {
    color: var(--sub-realm-color);
}

.subpage-realm {
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-align: center;
    opacity: 0.38;
    margin: -0.35rem 0 1.25rem;
    color: var(--sub-realm-color);
}

#subpage-fragments {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.subpage-fragment {
    position: absolute;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    opacity: 0;
    white-space: nowrap;
    color: rgba(26, 26, 26, 0.28);
    animation: subFragmentDrift var(--dur, 18s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

@keyframes subFragmentDrift {
    0%, 100% { opacity: 0; transform: translate(0, 0); }
    20% { opacity: var(--peak, 0.18); }
    80% { opacity: var(--peak, 0.14); }
    50% { transform: translate(var(--dx, 12px), var(--dy, -8px)); }
}

.page-sub .container,
.page-sub .content-centered {
    position: relative;
    z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
    #subpage-fragments { display: none; }
}

.page-sub.realm-words #subpage-fragments {
    display: none;
}

/* ── Favorites: hover whispers ── */
.fav-pick {
    position: relative;
    list-style: none;
    margin-bottom: 2rem !important;
    cursor: default;
}

.fav-pick .fav-title {
    transition: color 0.25s ease;
}

.fav-pick:hover .fav-title,
.fav-pick:focus-within .fav-title {
    color: var(--sub-realm-color, #3d5240);
}

.fav-whisper {
    display: block;
    margin: 0.35rem 0 0;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.03em;
    line-height: 1.45;
    color: rgba(26, 26, 26, 0.55);
}

.fav-whisper.fav-aside {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    margin: 0;
    font-style: italic;
    transition: opacity 0.3s ease, max-height 0.35s ease, margin 0.3s ease;
}

.fav-pick:hover .fav-whisper.fav-aside,
.fav-pick:focus-within .fav-whisper.fav-aside {
    opacity: 1;
    max-height: 3rem;
    margin-top: 0.45rem;
}

/* Books: shelf spine */
.fav-spine {
    padding-left: 0.85rem;
    border-left: 2px solid transparent;
    transition: border-color 0.3s ease, padding-left 0.3s ease;
}

.fav-spine:hover,
.fav-spine:focus-within {
    border-left-color: var(--sub-realm-color, #3d5240);
    padding-left: 1rem;
}

/* Movies / TV: reel timecode */
.fav-reel .fav-aside::before {
    content: '▶ ';
    opacity: 0.5;
    font-style: normal;
}

.fav-reel:hover .fav-title,
.fav-reel:focus-within .fav-title {
    letter-spacing: 0.02em;
}

.fav-category {
    position: relative;
}

.fav-category .fav-whisper {
    display: block;
    margin-left: 0;
}

.fav-photo {
    position: relative;
    cursor: crosshair;
}

.fav-photo .fav-whisper {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0.75rem;
    padding: 0.5rem 0.75rem;
    margin: 0;
    background: rgba(245, 244, 239, 0.92);
    font-size: 0.68rem;
    max-height: none;
    opacity: 0;
    pointer-events: none;
}

.fav-photo:hover .fav-whisper,
.fav-photo:focus-within .fav-whisper {
    opacity: 1;
}

.fav-photo:hover img,
.fav-photo:focus-within img {
    filter: brightness(0.92);
    transition: filter 0.35s ease;
}

.embed-item.fav-pick {
    margin-bottom: 1.5rem;
    padding: 0.25rem 0;
    border-radius: 4px;
    transition: box-shadow 0.25s ease;
}

.embed-item.fav-pick .fav-whisper {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.35s ease, margin 0.3s ease;
}

.embed-item.fav-pick:hover,
.embed-item.fav-pick:focus-within {
    box-shadow: inset 3px 0 0 var(--sub-realm-color, #3d5240);
}

.embed-item.fav-pick:hover .fav-whisper,
.embed-item.fav-pick:focus-within .fav-whisper {
    opacity: 1;
    max-height: 4rem;
    margin-top: 0.45rem;
}

.fav-category .fav-whisper {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: opacity 0.3s ease, max-height 0.35s ease, margin 0.3s ease;
}

.fav-category:hover .fav-whisper,
.fav-category:focus-within .fav-whisper {
    opacity: 1;
    max-height: 3rem;
    margin-top: 0.35rem;
}

/* ── Experience index: vertical timeline ── */
.exp-vtimeline {
    list-style: none;
    margin: 1.25rem 0 0;
    padding: 0 0 0 1.1rem;
    position: relative;
}

.exp-vtimeline::before {
    content: '';
    position: absolute;
    left: 0.35rem;
    top: 0.55rem;
    bottom: 0.55rem;
    width: 1px;
    background: rgba(26, 26, 26, 0.14);
}

.exp-vtimeline-item {
    position: relative;
    padding: 0 0 1.65rem 1.1rem;
    margin: 0 !important;
    cursor: pointer;
}

.exp-vtimeline-item:last-child {
    padding-bottom: 0;
}

.exp-vtimeline-item::before {
    content: '';
    position: absolute;
    left: -0.75rem;
    top: 0.5rem;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-paper, #f5f4ef);
    border: 1.5px solid var(--sub-realm-color, #2c4a6e);
    box-sizing: border-box;
    transition: background 0.2s ease, transform 0.2s ease;
}

.exp-vtimeline-item:first-child::before {
    background: var(--sub-realm-color, #2c4a6e);
}

.exp-vtimeline-item:hover::before,
.exp-vtimeline-item:focus-within::before {
    transform: scale(1.15);
}

.exp-vtimeline-when {
    display: block;
    margin: 0 0 0.2rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.45;
    color: var(--sub-realm-color, #2c4a6e);
}

.exp-vtimeline-title {
    display: inline-block;
    margin: 0;
    font-size: 1.05rem;
    font-weight: 700;
    line-height: 1.35;
    border-bottom: 1px solid rgba(26, 26, 26, 0.2);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.exp-vtimeline-item:hover .exp-vtimeline-title,
.exp-vtimeline-item:focus-within .exp-vtimeline-title {
    color: var(--sub-realm-color, #2c4a6e);
    border-bottom-color: var(--sub-realm-color, #2c4a6e);
}

.exp-vtimeline-desc {
    margin: 0.35rem 0 0;
    font-size: 0.92rem;
    line-height: 1.5;
    opacity: 0.72;
}

/* Experience detail: scroll readout */
.exp-readout {
    position: sticky;
    top: 0.75rem;
    z-index: 5;
    display: inline-flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.3rem 0.65rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    background: rgba(245, 244, 239, 0.85);
    border: 1px solid rgba(26, 26, 26, 0.08);
    border-radius: 4px;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.exp-readout.visible {
    opacity: 0.7;
    transform: translateY(0);
}

.exp-readout-pct {
    color: var(--sub-realm-color, #2c4a6e);
}

@media (max-width: 600px) {
    .subpage-realm {
        font-size: 0.58rem;
        letter-spacing: 0.1em;
        margin-bottom: 1rem;
    }

    .exp-readout,
    .learn-loss {
        font-size: 0.55rem;
        max-width: 100%;
        flex-wrap: wrap;
        gap: 0.35rem;
    }

    .exp-readout-cmd {
        overflow-wrap: anywhere;
    }

    .exp-vtimeline {
        padding-left: 0.95rem;
    }

    .exp-vtimeline-item {
        padding-bottom: 1.35rem;
    }

    .exp-vtimeline-title {
        font-size: 1rem;
    }

    .learn-stack {
        gap: 0.3rem;
    }

    .learn-stack-btn {
        min-width: calc(50% - 0.2rem);
        padding: 0.45rem 0.5rem;
    }

    .learn-stack-label {
        font-size: 0.62rem;
    }

    .fav-photo .fav-whisper {
        font-size: 0.62rem;
        padding: 0.4rem 0.5rem;
    }
}

/* Learning: depth stack */
.learn-stack {
    display: flex;
    gap: 0.35rem;
    margin: 1.25rem 0 1rem;
    flex-wrap: wrap;
}

.learn-stack-btn {
    flex: 1;
    min-width: 5.5rem;
    padding: 0.5rem 0.65rem;
    border: 1px solid rgba(26, 26, 26, 0.12);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-mono);
    transition: border-color 0.25s ease, background 0.25s ease;
}

.learn-stack-btn:hover,
.learn-stack-btn.active {
    border-color: var(--sub-realm-color, #2c4a6e);
    background: rgba(44, 74, 110, 0.05);
}

.learn-stack-label {
    display: block;
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.learn-stack-hint {
    display: block;
    margin-top: 0.2rem;
    font-size: 0.58rem;
    opacity: 0.45;
    letter-spacing: 0.04em;
}

body[data-learn-layer="unknown"] .learn-topics a {
    opacity: 0.55;
}

body[data-learn-layer="learning"] .learn-topics a {
    opacity: 1;
    text-decoration-thickness: 2px;
}

body[data-learn-layer="known"] .learn-topics {
    opacity: 0.35;
}

/* ML pages — training loss readout */
.learn-loss {
    position: sticky;
    top: 0.75rem;
    z-index: 5;
    display: inline-flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    padding: 0.3rem 0.65rem;
    font-family: var(--font-mono);
    font-size: 0.62rem;
    letter-spacing: 0.06em;
    background: rgba(245, 244, 239, 0.85);
    border: 1px solid rgba(26, 26, 26, 0.08);
    border-radius: 4px;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
}

.learn-loss.visible {
    opacity: 0.7;
    transform: translateY(0);
}

.learn-loss-val {
    color: var(--sub-realm-color, #2c4a6e);
}

@media (prefers-reduced-motion: reduce) {
    .fav-whisper.fav-aside,
    .fav-category .fav-whisper,
    .exp-readout,
    .learn-loss {
        transition: none;
    }

    .fav-pick .fav-whisper.fav-aside,
    .fav-category .fav-whisper,
    .fav-photo .fav-whisper {
        opacity: 0.85;
        max-height: none;
        transform: none;
    }
}