/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
article, aside, canvas, details, embed, 
figure, figcaption, footer, header, hgroup, 
menu, nav, output, ruby, section, summary,
time, mark, audio, video {
    margin: 0;
    padding: 0;
    border: 0;
    font-size: 100%;
    font: inherit;
    vertical-align: baseline;
}
/* HTML5 display-role reset for older browsers */
article, aside, details, figcaption, figure, 
footer, header, hgroup, menu, nav, section {
    display: block;
}
body {
    line-height: 1;
}
ol, ul {
    list-style: none;
}
blockquote, q {
    quotes: none;
}
blockquote:before, blockquote:after,
q:before, q:after {
    content: '';
    content: none;
}
table {
    border-collapse: collapse;
    border-spacing: 0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 1.25rem; /* 25% larger base font size */
}

body {
    font-family: 'degular', sans-serif;
    background: #ffffff;
    min-height: 100vh;
    /*padding: 2rem;*/
    color: #1a1a1a;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem 4rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin: 1.5rem auto 0.5rem auto ;
    color: #1a1a1a;
    text-wrap: balance;
    max-width: 70%;
}

#scroll-to-about {
    color: #3b82f6;
    text-decoration: none;
}

#scroll-to-about:hover {
    color: #2563eb;
    text-decoration: none;
}

header h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: #666666;
}

.chart-meta {
    margin: 1.25rem auto 0;
    max-width: 420px;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    padding: 0.85rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
}

.chart-meta .meta-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 0.85rem;
}

.chart-meta .meta-label {
    color: #6b7280;
    letter-spacing: 0.02em;
}

.chart-meta .meta-value {
    font-weight: 700;
    color: #1a1a1a;
    font-variant-numeric: tabular-nums;
}

.chart-main {
    position: relative;
    padding-bottom: 3rem;
}

#chart-wrap {
    position: relative;
    width: 100%;
    /* Reserve the chart's final height (560 SVG units + ~24px wrap padding)
       up front so the page doesn't jump down when history.json loads and
       the SVG is sized. */
    min-height: 584px;
    background: #fafafa;
    border-radius: 16px;
    padding: 1rem 42px 0.5rem 1rem;
    box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 1px 1px rgba(0,0,0,0.03);
    overflow-x: auto;
    overflow-y: visible;
    scroll-behavior: smooth;
}

/* Right-side y-axis, pinned outside the scrolling SVG. */
#chart-yaxis-pin {
    position: absolute;
    top: 1rem;
    right: 0;
    width: 42px;
    pointer-events: none;
    z-index: 3;
    background: linear-gradient(to right, rgba(250, 250, 250, 0) 0, #fafafa 45%);
}

#chart-yaxis-pin .pin-label {
    position: absolute;
    right: 8px;
    font-size: 12px;
    color: #6b7280;
    white-space: nowrap;
    line-height: 16px;
}

#chart {
    display: block;
    height: auto;
    overflow: visible;
    /* Bleed the chart a bit into the right-axis pin area so the lines visibly
       pass under the gradient fade. */
    margin-right: -12px;
}

/* Safari computes the SVG's intrinsic width slightly differently than Chrome,
   so the chart ends a bit short of the right-axis pin. Push it back. */
@supports (background: -webkit-named-image(i)) {
    #chart {
        margin-right: 28px;
    }
}

#chart .dot {
    cursor: pointer;
    /* Decouple pointer events from paint: otherwise an opacity-0 dot stops
       catching events (SVG default = visiblePainted), which causes mouseenter/
       mouseleave to bounce unpredictably on the .hovered class. */
    pointer-events: all;
    /* Shorter, simpler transition — mobile was jittering on the bouncy
       cubic-bezier while many dots animated at once. */
    transition: r 0.15s ease, stroke-width 0.15s ease, transform 0.16s ease-out;
    transform-origin: center;
}

/* Hidden while hovered so the photo overlay can take its place. */
#chart .dot.hovered {
    opacity: 0;
}

#chart .cluster.fanned .dot,
#chart .cluster.fanned .stripe-ring {
    /* will-change hints the browser to promote these to their own compositor
       layer so the fan animates without repainting the whole chart. */
    will-change: transform;
    transform: translate(calc(var(--fx) * 1px), calc(var(--fy) * 1px));
}

#chart .stripe-ring {
    transition: transform 0.16s ease-out;
    transform-origin: center;
}

#chart polyline.city-line.hidden {
    display: none;
}

#chart polyline.city-line {
    pointer-events: none;
}

#chart polyline.city-line.emphasized {
    stroke-width: 4;
    stroke-opacity: 1;
}

#chart polyline.city-line.emphasized.hidden {
    display: inline;
}

/* Single overlay dims everything beneath it. Way cheaper than transitioning
   opacity on ~1500 dots + lines every hover. */
#dim-overlay {
    opacity: 0;
    transition: opacity 0.15s ease;
    pointer-events: none;
}
#chart.has-hover #dim-overlay,
#chart.has-fanned #dim-overlay {
    opacity: 0.7;
}

/* While any cluster is fanned, lock out every OTHER cluster so the
   fan can't collapse because the cursor momentarily hit a neighbor's dot
   (which happens with overlapping hit-zones). */
#chart.has-fanned .cluster:not(.fanned) {
    pointer-events: none;
}

.hover-scale {
    transform: scale(0.15);
    transform-origin: 0 0;
    opacity: 0;
    transition: transform 0.18s cubic-bezier(.34, 1.6, .64, 1), opacity 0.1s ease-out;
    pointer-events: none;
}

.hover-scale.on {
    transform: scale(1);
    opacity: 1;
}

/* The "me Brian" photo (at the dot's rank) reads as half the size of the
   top-Brian photo so the top Brian feels like the star. Exception: when the
   dot IS 1st place (gold state), the me-Brian photo goes full size because
   he's the winner — no other Brian in frame. */
#hover-main-scale.on {
    transform: scale(0.5);
}
#hover-main.gold #hover-main-scale.on {
    transform: scale(1);
}

#hover-main-ring,
#hover-top-ring {
    animation: ring-spin 6s linear infinite;
    transform-origin: 0 0;
}

@keyframes ring-spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* Gold (1st place) treatment — no resting animation on the dot, all the
   sparkle happens only on hover. */
#chart .gold-dot {
    transform-origin: center;
}

/* Sparkle stars are hidden by default; shown only when hover-main is .gold */
.sparkle { opacity: 0; pointer-events: none; }
#hover-main.gold .sparkle { opacity: 1; }

.sparkle-star {
    animation: sparkle-twinkle 1.4s ease-in-out infinite;
    transform-origin: center;
    transform-box: fill-box;
    filter: drop-shadow(0 0 2px #fde047);
}

@keyframes sparkle-twinkle {
    0%, 100% { opacity: 0;   transform: scale(0.6) rotate(0deg); }
    50%      { opacity: 1;   transform: scale(1.2) rotate(45deg); }
}

/* Gold tooltip: gold background, black text, with a diagonal sheen that
   sweeps across once when it appears. */
#chart-hover.gold .hover-label {
    background: linear-gradient(135deg, #fde047, #facc15 55%, #f59e0b);
    color: #111827;
    box-shadow: 0 6px 20px rgba(234, 179, 8, 0.35), 0 2px 6px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
    isolation: isolate;
}
#chart-hover.gold .hover-label::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 35%, rgba(255, 255, 255, 0.7) 50%, transparent 65%);
    transform: translateX(-120%);
    animation: tooltip-sheen 900ms ease-out forwards;
    pointer-events: none;
}
@keyframes tooltip-sheen {
    to { transform: translateX(120%); }
}
#chart-hover.gold .hover-label .top-line,
#chart-hover.gold .hover-label .dim {
    color: #111827;
}
#chart-hover.gold .hover-label strong {
    color: #111827;
}

#chart-hover {
    position: absolute;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.15s ease;
    transform: translate(-50%, 30px);
    z-index: 5;
}

#chart-hover .hover-label {
    background: #1a1a1a;
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 8px;
    font-size: 0.72rem;
    line-height: 1.35;
    text-align: center;
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(0,0,0,0.2);
}

#chart-hover .hover-label .hover-place {
    margin-bottom: 2px;
}

#chart-hover .hover-label .dim {
    color: #9ca3af;
    font-weight: 400;
}

#chart-hover .hover-label strong {
    font-weight: 700;
}

#chart-hover .hover-label .hover-place {
    font-weight: 700;
}

#chart-hover .hover-label .top-line {
    margin-top: 2px;
    color: #9ca3af;
    font-style: italic;
    font-weight: 400;
}

#chart-hover .hover-label .top-line strong {
    font-weight: 700;
    font-style: italic;
}

#chart-legend {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 0.4rem 0.8rem;
    margin-top: 1.25rem;
}

/* Brian legend swatch: small SVG circle with the Brian's chart stroke. */
#chart-legend .legend-item .legend-swatch.brian-swatch {
    width: 18px;
    height: 18px;
    border-radius: 0;
    background: none;
    overflow: visible;
}

.legend-item {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.35rem 0.5rem;
    background: none;
    border: none;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.75rem;
    color: inherit;
    text-align: left;
    cursor: pointer;
    transition: background 0.15s ease, opacity 0.15s ease;
}

/* Hover styles only for devices that actually have hover. On touch the
   first tap would otherwise just "show the hover state" and require a
   second tap to actually fire the click handler. */
@media (hover: hover) {
    .legend-item:hover {
        background: rgba(0,0,0,0.04);
    }
}

.legend-item.off {
    opacity: 0.35;
}

.legend-item .legend-only {
    margin-left: auto;
    background: none;
    border: none;
    font-family: inherit;
    font-size: 0.7rem;
    color: #3b82f6;
    text-decoration: underline;
    border-radius: 4px;
    cursor: pointer;
    /* Collapsed by default — takes no width so the row stays compact. The
       hover/tap-active rules below expand it. */
    max-width: 0;
    padding: 2px 0;
    overflow: hidden;
    opacity: 0;
    white-space: nowrap;
    transition: max-width 0.18s ease, padding 0.18s ease, opacity 0.15s ease;
}

@media (hover: hover) {
    .legend-item:hover .legend-only {
        opacity: 1;
        max-width: 60px;
        padding: 2px 6px;
    }
}

/* Mobile: tapping a row reveals its "only" link. */
.legend-item.tap-active .legend-only {
    opacity: 1;
    max-width: 60px;
    padding: 2px 6px;
}

@media (hover: hover) {
    .legend-item .legend-only:hover {
        color: #1d4ed8;
        background: rgba(59, 130, 246, 0.08);
    }
}

#chart polyline.city-line {
    transition: stroke-width 0.15s ease, stroke-opacity 0.15s ease;
}

.legend-swatch {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex: 0 0 auto;
}

.legend-text {
    display: flex;
    flex-direction: column;
    line-height: 1.15;
}

.legend-city {
    font-weight: 600;
    color: #1a1a1a;
}

.legend-country {
    color: #6b7280;
    font-size: 0.7rem;
}

footer {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
    font-size: 0.9rem;
    text-wrap: balance;
}

/* About overlay for blur effect */
#about-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0);
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    z-index: 98;
    pointer-events: none;
    transition: backdrop-filter 0.3s ease, -webkit-backdrop-filter 0.3s ease, background 0.3s ease;
}

/* About section styles */
#about {
    position: relative;
    z-index: 99;
    max-width: 800px;
    margin: 0 auto 10vw auto;
    padding: 2rem;
    /* Give the about panel some breathing room at the top when the anchor
       link or scrollIntoView lands on it. */
    scroll-margin-top: 6vh;
    background: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    font-family: 'Degular', sans-serif;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

#about h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: #1a1a1a;
    text-align: center;
}

#about .photo-gallery {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    margin: 2rem 0 3rem 0;
    perspective: 1000px;
}

#about .photo-gallery .photo-wrapper {
    position: relative;
    transition: z-index 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

#about .photo-gallery .photo-wrapper .label {
    position: absolute;
    bottom: -35px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    font-size: 0.9rem;
    /*font-weight: 600;*/
    color: #000;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
    /* Stack above the ::after border ring and above neighboring photos. */
    z-index: 20;
    background: #DBFF00;
    padding: 0.4em 1em;
}

#about .photo-gallery .photo-wrapper:hover .label {
    opacity: 1;
}

#about .photo-gallery .photo-wrapper:hover {
    z-index: 10;
}

/* Photo: just the photo. No border on the img itself. */
#about .photo-gallery img {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 12px;
    position: relative;
    transition: transform 0.3s ease;
    cursor: pointer;
}

/* Shadow layer behind the image. Transparent fill so dotted/dashed/dash-dot
   border gaps (drawn by ::after) show through without a white wash. */
#about .photo-gallery .photo-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 160px;
    height: 160px;
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
    z-index: -1;
    pointer-events: none;
}

/* Border layer drawn on top of the img — one ring per photo, set per
   nth-child below. Keeps the img clean (no border on it) so there's
   only ever ONE border. ~5px stroke wraps a 160x160 photo => 170x170
   at -5,-5 with border-radius 17 (12 + 5). */
#about .photo-gallery .photo-wrapper::after {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    width: 170px;
    height: 170px;
    border-radius: 17px;
    box-sizing: border-box;
    pointer-events: none;
    transition: transform 0.3s ease;
}

#about .photo-gallery img:hover {
    transform: scale(1.2);
}

#about .photo-gallery .photo-wrapper:hover::before,
#about .photo-gallery .photo-wrapper.hover-active::before {
    transform: scale(1.2);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3);
}

#about .photo-gallery .photo-wrapper:hover::after,
#about .photo-gallery .photo-wrapper.hover-active::after {
    transform: scale(1.2);
}

#about .photo-gallery .photo-wrapper:nth-child(1) {
    z-index: 4;
    margin-right: -20px;
    top: 15px;
    transform: rotate(-12deg) translateY(-15px);
}


#about .photo-gallery .photo-wrapper:nth-child(2) {
    z-index: 3;
    margin-right: -20px;
    transform: rotate(-4deg) translateY(-8px);
}


#about .photo-gallery .photo-wrapper:nth-child(3) {
    z-index: 2;
    margin-right: -20px;
    transform: rotate(4deg) translateY(-8px);
}

#about .photo-gallery .photo-wrapper:nth-child(4) {
    top: 15px;
    z-index: 1;
    transform: rotate(12deg) translateY(-15px);
}

/* Per-Brian border patterns drawn on the wrapper's ::after, all in black. */
#about .photo-gallery .photo-wrapper:nth-child(1)::after {
    border: 5px dotted #1a1a1a;
}

#about .photo-gallery .photo-wrapper:nth-child(2)::after {
    border: 5px dashed #1a1a1a;
}

/* Commentator: matches the dash-dot pattern used on chart dots. Drawn as
   a background SVG with a stroked rounded rect, since CSS has no native
   dash-dot border style. SVG viewBox & inset scaled to match 5px stroke. */
#about .photo-gallery .photo-wrapper:nth-child(3)::after {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 170 170' preserveAspectRatio='none'><rect x='2.5' y='2.5' width='165' height='165' rx='12' ry='12' fill='none' stroke='%231a1a1a' stroke-width='5' stroke-dasharray='7 8 0.1 8' stroke-linecap='round'/></svg>");
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

#about .photo-gallery .photo-wrapper:nth-child(4)::after {
    border: 5px solid #1a1a1a;
}


#about .photo-gallery .photo-wrapper:hover,
#about .photo-gallery .photo-wrapper.hover-active {
    transform: rotate(0deg);
}

#about .photo-gallery .photo-wrapper:hover img,
#about .photo-gallery .photo-wrapper.hover-active img {
    transform: scale(1.2);
    box-shadow: 0 12px 24px rgba(0,0,0,0.3);
}

#about .photo-gallery .photo-wrapper:hover,
#about .photo-gallery .photo-wrapper.hover-active {
    z-index: 10;
}

#about .photo-gallery .photo-wrapper:hover .label,
#about .photo-gallery .photo-wrapper.hover-active .label {
    opacity: 1;
}

#about p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 2rem;
    color: #333;
    text-wrap: pretty;
}
#about a {
    color: #0066cc;
    text-decoration: none;
}

#about a:hover {
    text-decoration: underline;
}


/* Responsive design */
@media (max-width: 768px) {
    body {
        /*padding: 1rem;*/
    }

    header {
        margin-bottom: 1rem;
    }

    header h1 {
        font-size: 1.75rem;
        max-width: 100%;
        margin-top: 1rem;
    }

    /* Let the chart bleed out past .container's 1rem horizontal padding so
       it spans the full viewport width on mobile. */
    .chart-main {
        margin-left: -1rem;
        margin-right: -1rem;
    }

    #chart-wrap {
        border-radius: 0;
        /* No top padding on mobile so the chart sits right under the header. */
        padding-top: 0;
    }

    /* The pin's top offset must match chart-wrap's padding-top so its label
       y-positions line up with the SVG's gridline y-positions. */
    #chart-yaxis-pin {
        top: 0;
    }

    /* Desktop gives the chart a small negative right margin so lines bleed
       under the gradient — on mobile that pushes the content too far right
       into the axis pin, so reset it. */
    #chart {
        margin-right: 0;
    }

    /* Safari (mobile included) needs the same right-shift the desktop Safari
       rule provides — otherwise lines fall short of the right-axis pin. */
    @supports (background: -webkit-named-image(i)) {
        #chart {
            margin-right: 28px;
        }
    }

    #chart-hover .hover-photo {
        width: 60px;
        height: 60px;
        border-width: 3px;
    }

    /* Mobile legend: horizontally scrolling single row right under the chart.
       Each city/Brian is one tap to toggle (no hover-then-click flow). */
    #chart-legend {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        gap: 0.5rem;
        margin-top: 0.5rem;
        padding: 0.25rem 1rem 0.5rem;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x proximity;
        grid-template-columns: none;
    }

    #chart-legend .legend-item {
        flex: 0 0 auto;
        scroll-snap-align: start;
    }

    /* (.legend-item.tap-active .legend-only handled by the global rule
       above — same expand-on-active behavior on every viewport.) */

    .chart-meta {
        margin-left: 1rem;
        margin-right: 1rem;
    }

    /* Mobile about section styling */
    #about {
        max-width: 95%;
        padding: 1.5rem;
    }

    /* Mobile 2x2 grid for about photos */
    #about .photo-gallery {
        display: grid;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
        gap: 0.5rem;
        justify-items: center;
        align-items: center;
        margin: 2rem 0 1rem 0;
        max-width: 350px;
        margin-left: auto;
        margin-right: auto;
        perspective: 1000px;
    }

    #about .photo-gallery .photo-wrapper {
        margin-right: 0;
        position: relative;
    }

    #about .photo-gallery .photo-wrapper:nth-child(1) {
        grid-column: 1;
        grid-row: 1;
        top: 0;
        transform: rotate(-3deg) translate(10px, 5px);
        z-index: 4;
    }

    #about .photo-gallery .photo-wrapper:nth-child(2) {
        grid-column: 2;
        grid-row: 1;
        transform: rotate(3deg) translate(-10px, 5px);
        z-index: 3;
    }

    #about .photo-gallery .photo-wrapper:nth-child(3) {
        grid-column: 1;
        grid-row: 2;
        transform: rotate(-3deg) translate(10px, -5px);
        z-index: 2;
        margin-top: -30px;
    }

    #about .photo-gallery .photo-wrapper:nth-child(4) {
        grid-column: 2;
        grid-row: 2;
        top: 0;
        transform: rotate(3deg) translate(-10px, -5px);
        z-index: 1;
        margin-top: -30px;
    }

    #about .photo-gallery img {
        width: 160px;
        height: 160px;
    }

    #about .photo-gallery .photo-wrapper:hover {
        z-index: 10;
    }

    #about .photo-gallery .photo-wrapper:hover img,
    #about .photo-gallery .photo-wrapper.hover-active img {
        transform: scale(1.2) rotate(0deg);
    }
}