@font-face {
    font-family: 'Iosevka';
    src: url('fonts/iosevka-light.ttf');
}

/* Make sizing predictable so padding doesn't cause overflow */
*, *::before, *::after {
    box-sizing: border-box;
}


:root {
    --text-color: rgb(196, 128, 57);
    --settings-text-color: rgb(120, 220, 255);
    /* --text-color: rgb(109, 98, 238); */
}

body {
    height: 100%;
    padding: 0;
    margin: 0;
    /* NOTE for some reason the canvas doesn't extend to the bottom of the page... */
    background-color: #2a3352;
    /* layered repeating pattern: small triangle tile + subtle diagonal wash */
    background-image:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='28' height='28' viewBox='0 0 28 28'><polygon points='6,2 10,10 2,10' fill='%23ffffff' opacity='0.05'/></svg>"),
        linear-gradient(135deg, rgba(255,255,255,0.02), rgba(0,0,0,0.02));
    /* keep triangle visual size the same by using a slightly larger tile canvas (28px) with the small polygon coords */
    background-size: 28px 28px, auto;
    background-repeat: repeat;
    background-attachment: fixed;

    font-family: 'Iosevka', serif;
}

#canvas_div {
    /* Main page canvas area — now flows inside layout instead of fixed */
    position: relative;
    width: 100%;
    padding: 0;
    margin: 0 auto;
}

canvas {
    width: 100%;
    height: 100%;
    display: block;
}


#the_rest {
    position: absolute;
}

/* https://stackoverflow.com/questions/826782/how-to-disable-text-selection-highlighting */
.noselect {
  -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
     -khtml-user-select: none; /* Konqueror HTML */
       -moz-user-select: none; /* Old versions of Firefox */
        -ms-user-select: none; /* Internet Explorer/Edge */
            user-select: none; /* Non-prefixed version, currently
                                  supported by Chrome, Edge, Opera and Firefox */
}

#site_header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 30;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
    padding: 0.6rem 1rem;
    background: linear-gradient(180deg, rgba(0,0,0,0.45), rgba(0,0,0,0.15));
}

#site_header #my_name_in_the_middle {
    margin: 0;
    color: var(--text-color);
    font-size: 2.4rem;
}

#site_header #heading_subtitle {
    margin: 0;
    font-size: 0.95rem;
    color: rgba(200,200,200,0.85);
}

#main_area {
    /* leave room for the header and footer */
    padding-top: 4.2rem; /* header height */
    padding-bottom: 3.2rem; /* footer height */
}

#center_area {
    width: 95vw; /* slightly wider */
    max-width: 1500px;
    margin: 1.5rem auto;
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 0 1rem;
}

#boid_panel {
    flex: 1 1 0;
    min-width: 300px;
}

#settings_column {
    /* slightly smaller per user's preference */
    width: 400px;
    min-width: 280px;
    max-width: 50vw;
    height: 80vh;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

#settings_column details {
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    overflow-y: auto;
}

#slideContainer {
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

#site_footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    z-index: 30;
    background: linear-gradient(0deg, rgba(0,0,0,0.45), rgba(0,0,0,0.15));
    padding: 0.6rem 1rem;
}

#footer_links {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 3.5rem;
    justify-content: center;
    align-items: center;
    padding: 0 1rem;
}

#footer_links a, #footer_links #email {
    color: var(--text-color);
    font-size: 1.35rem; /* bigger for prominence */
    font-weight: 700;
    letter-spacing: 0.02em;
}

/* Larger on wide screens */
@media (min-width: 1000px) {
    #footer_links a, #footer_links #email {
        font-size: 1.6rem;
    }
}

/* Provide more breathing room on very wide screens */
@media (min-width: 1400px) {
    #footer_links {
        gap: 9rem;
    }
}

a:hover {
    color: rgb(185, 82, 134);
}

/* overlay statements inside the boid container */
.overlay_statements {
    position: absolute;
    inset: 0;
    z-index: 20;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas: "top-left top-right" "bottom bottom";
    gap: 1rem 2rem;
    align-items: center;
    justify-items: center;
    text-align: center;
    pointer-events: none; /* don't block clicks to canvas; set per-element if needed */
    font-size: 1.5rem; /* larger for prominence */
    color: var(--text-color);
    padding: 2rem;
}

.overlay_statements p {
    margin: 0;
    line-height: 1.05;
    max-width: 46ch;
    padding: 0.5rem 0.8rem;
    border-radius: 6px;
}

.overlay_statements p:nth-child(1) {
    grid-area: top-left;
}
.overlay_statements p:nth-child(2) {
    grid-area: top-right;
}
.overlay_statements p:nth-child(3) {
    grid-area: bottom;
}

/* Make overlay text smaller on small screens */
@media (max-width: 900px) {
    .overlay_statements {
        font-size: 1.05rem;
        padding: 1rem;
        gap: 0.6rem;
    }
    #center_area {
        flex-direction: column-reverse;
    }
    #settings_column {
        width: 100%;
        max-width: none;
    }
    .overlay_statements {
        grid-template-columns: 1fr;
        grid-template-areas: "top-left" "top-right" "bottom";
    }
    .overlay_statements p {
        max-width: 85vw;
    }

    /* Make the boid canvas bigger and centered on narrow screens */
    #boid_panel {
        width: 100%;
        display: flex;
        justify-content: center;
        align-items: stretch;
    }

    /* Ensure the container defines a predictable height so the canvas scales well */
    #boid_container {
        position: relative; /* required for absolute-positioned overlays */
        width: 100%;
        max-width: 1100px;
        /* use a viewport-based height but don't exceed available space */
        height: min(62vh, 80vw);
        margin: 0 auto; /* center horizontally */
    }

    /* Make canvas fill the container and keep it centered */
    #boid_container canvas {
        width: 100%;
        height: 100%;
        display: block;
    }

    /* Slightly relax overlay widths on very small screens */
    .overlay_statements p {
        max-width: 92vw;
    }
}



/* ---------------------------------------------------- */
/*                   Slider Stuff                       */
/* ---------------------------------------------------- */

summary {
    background-color: #151515;
    color: lightgoldenrodyellow;
    opacity: 0.7;
    padding: 0.5rem;
    font-size: 1.5rem;
}

/* Make the summary look like a button and add a caret */
summary#settings_summary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    cursor: pointer;
    padding: 0.6rem 0.9rem;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.03);
    background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.00));
}
/* hide the browser default marker for this summary and use a left-side caret */
summary#settings_summary::-webkit-details-marker {
    display: none;
}
summary#settings_summary::marker {
    display: none;
}

summary#settings_summary::before {
    /* use a right-pointing triangle so it rotates down like the native category marker */
    content: '\25B6'; /* ▶ */
    display: inline-block;
    margin-right: 0.6rem;
    transform-origin: center;
    transition: transform .12s ease;
    font-size: 0.95em;
}

/* rotate 90deg when open so the triangle points down to match categories */
details[open] > summary#settings_summary::before {
    transform: rotate(90deg);
}

/* https://www.w3schools.com/howto/howto_js_rangeslider.asp */
#slideContainer {
    /* default: inline flow for small screens */
    position: static;
    width: 100%;
    max-width: 92vw;
    max-height: none;
    overflow: visible;

    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.5rem;
    padding-left: 0.8rem;
    border: 1px solid rgba(120,220,255,0.10);
    border-radius: 8px;
    background: linear-gradient(180deg, rgba(255,255,255,0.01), transparent);
}

.rangeHolder {
    background: linear-gradient(180deg, #161616, #060606);
    border: 2px solid rgba(120,220,255,0.28);

    width: 90%;

    justify-self: center;

    padding: 0.5rem;
    border-radius: 0.35rem;

    display: flex;
    flex-direction: column;
    opacity: 0.95;
    align-items: center;

    margin: 0.06rem;
    box-shadow: 0 6px 18px rgba(0,0,0,0.6), 0 1px 0 rgba(255,255,255,0.02) inset, 0 0 18px rgba(120,220,255,0.06);
    transition: transform .12s ease, box-shadow .12s ease;
}
.rangeHolder:hover {
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.7), 0 0 28px rgba(120,220,255,0.08);
}

.checkbox_toggle {
    margin-top: 6px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
}
.checkbox_toggle_label {
    padding: 0.15rem 0;
    color: var(--settings-text-color);
    font-size: 0.95rem;
    line-height: 1.1;
    font-weight: 600;
}
.checkbox_toggle input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin: 0;
    align-self: flex-start;
}

.sliderKey {
    color: var(--settings-text-color);
    margin: 0.2rem;
    white-space: normal; /* allow wrapping to avoid overflow */
    overflow-wrap: anywhere;
    font-weight: 600;
}

details {
    overflow: visible;
}
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 10px;
    border-radius: 6px;  
    background: linear-gradient(90deg, #2b2b2b, #1f1f1f);
    outline: none;
    opacity: 0.95;
    -webkit-transition: .12s;
    transition: opacity .12s, box-shadow .12s;
}
/* Mouse-over effects */
.slider:hover {
    opacity: 1;
    box-shadow: 0 2px 8px rgba(0,0,0,0.45);
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%; 
    background: var(--settings-text-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.06);
}
.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--settings-text-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0,0,0,0.5);
    border: 1px solid rgba(255,255,255,0.06);
}

/* Category groups (collapsible) */
.categoryGroup {
    margin: 0.4rem 0;
    border-radius: 6px;
    overflow: hidden;
    background: #0f0f0f;
    border: 1px solid rgba(255,255,255,0.04);
}
.categoryHeader {
    padding: 0.6rem 1rem;
    font-weight: 600;
    cursor: pointer;
    background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent);
    color: lightgoldenrodyellow;
}

/* Give category headers the same caret + rotate animation as the settings summary */
summary.categoryHeader { /* summary elements created in setup_sliders.ts */
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
}

summary.categoryHeader::-webkit-details-marker {
    display: none;
}
summary.categoryHeader::marker {
    display: none;
}

summary.categoryHeader::before {
    content: '\25B6'; /* ▶ */
    display: inline-block;
    margin-right: 0.6rem;
    transform-origin: center;
    transition: transform .12s ease;
    font-size: 0.95em;
}

details[open] > summary.categoryHeader::before {
    transform: rotate(90deg);
}
.categoryBody {
    padding: 0.6rem;
    display: grid;
    /* allow items to wrap into multiple columns but be able to shrink
        reduce the minimum size so more items can fit per row inside
        the narrow settings column */
    grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
    gap: 0.5rem;
    align-items: start;
}

.rangeHolder {
    background: linear-gradient(180deg, #151515, #040404);

    width: auto;

    justify-self: stretch;

    padding: 0.4rem;
    border-radius: 0.35rem;

    display: flex;
    flex-direction: column;
    opacity: 0.98;
    align-items: stretch;

    margin: 0.05rem;
    box-shadow: 0 6px 18px rgba(0,0,0,0.55), 0 0 14px rgba(120,220,255,0.04);
    min-width: 0; /* allow children to shrink inside grid */
    overflow: visible;
    border: 2px solid rgba(120,220,255,0.24);
}
.rangeHolder * {
    box-sizing: border-box;
}
.rangeHolder {
    max-width: 100%;
}

.rangeHolder .sliderKey {
    display: block;
    width: 100%;
}
.rangeHolder input.slider {
    width: 100%;
    max-width: 100%;
}
.rangeHolder input[type="checkbox"] {
    max-width: none;
}
.checkbox_toggle_label {
    display: inline-block;
    max-width: 100%;
    overflow-wrap: anywhere;
}
.rangeHolder * {
    box-sizing: border-box;
}
.rangeHolder {
    max-width: 100%;
}
.rangeHolder:hover {
    opacity: 1;
}

/* Constrain boid canvas into a centered container */
#boid_container {
    width: 100%;
    max-width: 1400px;
    height: 75vh; /* larger canvas */
    margin: 1rem auto;
    background: #121212;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 6px 30px rgba(0,0,0,0.6);
    position: relative;
}
#boid_container canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* Disable popout: force slideContainer to render inline under the summary
   and remove animations/absolute positioning that caused off-screen layout. */
details > #slideContainer {
    position: static !important;
    transform: none !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    width: 100% !important;
    max-width: 92vw !important;
    box-shadow: none !important;
}

details[open] > #slideContainer {
    transform: none !important;
    opacity: 1 !important;
}