/**
 * About Page - section navigation
 *
 * Right-edge flyout "jump" nav + bracketed year markers + closing action line.
 * Loaded only by about/about.html. Companion script: js/about-nav.js
 * (tags bare-year <dt>s and highlights the current section).
 */

/* Animated in-page jumps. common.css already forces
   scroll-behavior: auto under prefers-reduced-motion. */
html {
    scroll-behavior: smooth;
}

/* Right-edge flyout nav: only the slim tab shows until the pointer
   (or keyboard focus) reaches it, then the panel slides in. */
.about-flyout {
    position: fixed;
    top: 50%;
    right: 0;
    z-index: 25;
    display: flex;
    align-items: stretch;
    transform: translateY(-50%) translateX(calc(100% - 20px));
    transition: transform 0.25s ease;
    font-family: var(--font-mono, 'IBM Plex Mono', monospace);
}

.about-flyout:hover,
.about-flyout:focus-within {
    transform: translateY(-50%) translateX(0);
}

.about-flyout-tab {
    width: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
    border: 1px solid var(--color-border, #dfdfdf);
    border-right: none;
    writing-mode: vertical-rl;
    font-size: 11px;
    letter-spacing: 0.2em;
    color: var(--color-text, #1a1a1a);
    user-select: none;
}

.about-flyout-list {
    margin: 0;
    padding: 14px 20px;
    list-style: none;
    background-color: #ffffff;
    border: 1px solid var(--color-border, #dfdfdf);
}

.about-flyout-list li {
    margin: 0;
    padding: 0;
}

.about-flyout-list a {
    display: block;
    padding: 4px 0;
    font-size: 12px;
    letter-spacing: 0.05em;
    color: inherit;
    text-decoration: none;
    white-space: nowrap;
}

/* Bracket style: [Education] */
.about-flyout-list a::before { content: '['; }
.about-flyout-list a::after { content: ']'; }

.about-flyout-list a:hover,
.about-flyout-list a:focus-visible,
.about-flyout-list a.current {
    color: var(--color-accent);
}

.about-flyout-list a.current {
    font-weight: 700;
}

/* No hover on touch, and the tab would crowd a narrow viewport: the mobile
   audience keeps the plain scroll (revisit if a mobile pattern is wanted) */
@media (max-width: 767px) {
    .about-flyout {
        display: none;
    }
}

/* Anchor targets stop clear of the fixed header */
#content h3[id] {
    scroll-margin-top: calc(var(--about-fixed-header-offset) + 24px);
}

/* Year markers: [2024], bold */
#content dt.year-marker {
    font-family: var(--font-mono, 'IBM Plex Mono', monospace);
    font-weight: 700;
    margin-top: 36px;
}

#content dt.year-marker::before { content: '['; }
#content dt.year-marker::after { content: ']'; }

/* Closing action line, terminal idiom */
.about-next {
    font-family: var(--font-mono, 'IBM Plex Mono', monospace);
    font-size: 14px;
    letter-spacing: 0.05em;
    margin: 4px 0 48px;
}

.about-next .about-next-prompt {
    color: var(--color-accent);
    font-weight: 500;
}

.about-next a {
    color: var(--color-accent);
    text-decoration: none;
    margin-left: 14px;
}

.about-next a:hover {
    text-decoration: underline;
}