body {
    margin: 0.5% 10%;
}
/* Header layout */
header {
    margin-bottom: 2em;
    text-align: center;
    position: relative;
}
.nav-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.4em;
}
.nav-button {
    font-size: 1.2em;
    text-decoration: none;
    padding: 1em 1.5em;
    border-radius: 4px;
    transition: background-color 0.2s ease;
}
.dropdown-main-button {
    display: inline-block;
    align-items: center;
    text-align: center;
    justify-content: center;
    font-size: 2.2em;
    text-decoration: none;
    border: none;
    padding: 0em 0.4em 0.3em 0.4em;
}
#dropdown {
    position: absolute;
    top: 100%;
    right: 0%;
    border-radius: 1em;
    justify-content: center;
    line-height: 1.4em;
    padding: 2em;
    opacity: 0;
    transform: translateY(-30px);
    pointer-events: none;
    transition: opacity 0.08s ease, transform 0.22s ease;
}
#dropdown.open {
    opacity: 1;
    transform: translateY(0px);
    pointer-events: auto;
}
.dropdown-button {
    display: block;
    font-size: 1.2em;
    text-decoration: none;
    border-radius: 4px;
}
.nav-bar-cell {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    padding: 0.6em;
}


h1, h2 {
    text-align: center;
    font-family: 'Merriweather', serif;
}
h1 a {
    text-decoration: none;
}
h4 {
    font-family: 'Merriweather', serif;
}
p, h1, ol, ul, small {
    margin: 2% 10%;
}
p, ol, ul, small {
    text-align: justify;
}
p, ol, ul {
    font-size: 1.3em;
    line-height: 1.2em;
}
p, a, i, ol, ul, small {
    font-family: 'Lato', sans-serif;
}
.email {
    font-size: 1.2em;
}
.about_me {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 2rem 0;
    flex-wrap: wrap;
}
.about_me img {
    width: 25%;
    height: auto;
    border-radius: 7px;
    margin-right: 2em;
}
.about_me_text {
    width: 55%;
}
.about_me_text h1 {
    text-align: left;
}

/* Footer layout */
footer {
    text-align: center;
    margin-top: 5em;
}
.picture_box_footer {
    display: block;
    margin: auto;
}
.picture_box_footer img {
    width: 3%;
    height: auto;
    display: inline-block;
    opacity: 80%;
}
.picture_box_footer img:hover {
    opacity: 100%;
}

@media (prefers-color-scheme: light) {
    body {
        background-color: white;
    }
    h1, h2, p, i, ol, ul, h4, .email, small {
        color: black;
    }
    .email:hover {
        color: rgb(48, 48, 48);
    }
    a {
        color: #1a0dab;
    }
    a:hover {
        color: #0d0080;
    }
    .nav-button {
        background-color: whitesmoke;
        color: black;
    }
    .nav-button:hover {
        background-color: lightgray;
        color: black;
    }
    #dropdown.open {
        background-color: white;
    }
    .dropdown-main-button {
        background-color: white;
        color: black;
    }
    .dropdown-main-button:hover {
        color: rgb(48, 48, 48);
    }
    .dropdown-button {
        color: black;
    }
    .dropdown-button:hover {
        color: rgb(48, 48, 48);
    }
    .dark {
        display: none;
    }
}
@media (prefers-color-scheme: dark) {
    body {
        background-color: #181818;
    }
    h1, h2, p, i, ol, ul, h4, .email, small {
        color: #e0e0e0;
    }
    .email:hover {
        color: white;
    }
    a {
        color: #8ab4f8;
    }
    a:hover {
        color: #a2c0ff;
    }
    .nav-button {
        background-color: #1f1f1f;
        color: #e0e0e0;
    }
    .nav-button:hover {
        background-color: #333;
        color: #e0e0e0;
    }
    #dropdown.open {
        background-color: #181818;
    }
    .dropdown-main-button {
        background-color: #181818;
        color: #e0e0e0;
    }
    .dropdown-main-button:hover {
        color: white;
    }
    .dropdown-button {
        color: #e0e0e0;
    }
    .dropdown-button:hover {
        color: white;
    }
    .light {
        display: none;
    }
}

@media only screen and (max-device-width: 550px) {
    body {
        margin: 0.5% 3%;
    }
    p, h1, ol, ul {
        margin: 3%;
    }
    p, ol, ul {
        text-align: justify;
        font-size: 1.2em;
    }
    .about_me {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .about_me img {
        width: 70%;
        height: auto;
        border-radius: 7px;
        margin-right: 0;
    }
    .about_me_text {
        width: 100%;
    }
    .about_me_text h1 {
        text-align: justify;
    }
    .picture_box_footer img {
        width: 14%;
        opacity: 100%;
    }
}

@media (min-width: 551px) and (max-width: 1000px) {
    body {
        margin: 0.5%;
    }
    p, h1, ol, ul {
        margin: 3%;
    }
    p, ol, ul {
        text-align: justify;
        font-size: 1.2em;
    }
    .about_me {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .about_me img {
        width: 50%;
        height: auto;
        border-radius: 7px;
        margin-right: 0;
    }
    .about_me_text {
        width: 95%;
    }
    .about_me_text h1 {
        text-align: justify;
    }
    .picture_box_footer img {
        width: 6%;
        opacity: 100%;
    }
}
@media (min-width: 1001px) and (max-width: 1280px) {
    body {
        margin: 0.5%;
    }
    p, h1, ol, ul {
        margin: 3%;
    }
    p, ol, ul {
        text-align: justify;
        font-size: 1.2em;
    }
}
@media (min-width: 730px) and (max-width: 789px) {
    .nav-bar {
        gap: 0.2em;
    }
    .nav-button {
        padding: 1em 0.35em;
    }
}
@media (min-width: 790px) and (max-width: 920px) {
    .nav-button {
        padding: 1em 0.55em;
    }
}
@media (min-width: 921px) and (max-width: 1024px) {
    .nav-button {
        padding: 1em 1em;
    }
}
@media (max-width: 799px) {
    .regular {
        display: none;
    }
}
@media (min-width: 800px) {
    .cellphone {
        display: none;
    }
}

/* ======================================================================
   Additions for the QP Mutation app (quiver-mutation.html).
   Reuses the tokens/classes above (.nav-bar, .nav-button, Merriweather/
   Lato, the same light/dark palette) rather than introducing a new look.
   Nothing above this line is modified.
   ====================================================================== */

:root {
    --qp-bg: white;
    --qp-fg: black;
    --qp-muted: black;
    --qp-muted-bg: whitesmoke;
    --qp-muted-bg-hover: lightgray;
    --qp-border: #ddd;
    --qp-link: #1a0dab;
    --qp-link-hover: #0d0080;
    --qp-link-soft: #eef0fb;
    --qp-danger: #a0332a;
    --qp-danger-soft: #fbeceb;
    --qp-mono: 'Courier New', Courier, monospace;
    --qp-sans: 'Lato', sans-serif;
    --qp-serif: 'Merriweather', serif;
}
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --qp-bg: #181818;
        --qp-fg: #e0e0e0;
        --qp-muted: #e0e0e0;
        --qp-muted-bg: #1f1f1f;
        --qp-muted-bg-hover: #333;
        --qp-border: #333;
        --qp-link: #8ab4f8;
        --qp-link-hover: #a2c0ff;
        --qp-link-soft: #202840;
        --qp-danger: #e2867c;
        --qp-danger-soft: #3a1e1c;
    }
}

.qp-app { max-width: 1180px; margin: 0 auto; color: var(--qp-fg); }
.qp-app header { margin-bottom: 1em; }
.qp-app header p { font-size: 1em; color: var(--qp-muted); margin-top: 0; }
.qp-app header p a { font-family: 'Lato', sans-serif; }
.qp-app p {font-size: 1.18em;}

.qp-nav-row { margin: 1.2em 0; display: flex; flex-direction: column; align-items: center; gap: 0.6em; }
.nav-bar.qp-compact .nav-button,
.nav-bar.qp-compact a.nav-button {
    font-size: 0.85em;
    padding: 0.5em 0.9em;
}
.nav-button.qp-active {
    background-color: var(--qp-link) !important;
    color: white !important;
}
.nav-button.qp-danger:hover { color: var(--qp-danger); }
.nav-button:disabled {
    opacity: 0.4;
    cursor: default;
    pointer-events: none;
}
button.nav-button {
    font-family: 'Lato', sans-serif;
    cursor: pointer;
    border: none;
    appearance: none;
}
button.nav-button:focus-visible {
    outline: 2px solid var(--qp-link);
    outline-offset: 2px;
}
.qp-modal-actions .nav-button {
    font-size: 0.95em;
    padding: 0.5em 1em;
}
.qp-inspector-actions .nav-button {
    font-size: 0.85em;
    padding: 0.4em 0.8em;
}
.nav-button.qp-small {
    font-size: 0.85em;
    padding: 0.35em 0.7em;
}
.qp-ph { color: var(--qp-muted); }

.qp-workspace {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 1.4em;
    align-items: start;
}
@media (max-width: 860px) {
    .qp-workspace { grid-template-columns: 1fr; }
}

.qp-canvas-col {
    display: flex;
    flex-direction: column;
    gap: 1.2em;
    min-width: 0;
}

.qp-canvas-wrap {
    position: relative;
    border: 1px solid var(--qp-border);
    border-radius: 4px;
    overflow: hidden;
    background: var(--qp-bg);
    min-height: 440px;
}
.qp-canvas-wrap canvas { position: absolute; inset: 0; width: 100%; height: 100%; touch-action: none; }

.qp-hint {
    position: absolute; left: 12px; bottom: 12px;
    background: var(--qp-bg);
    border: 1px solid var(--qp-border);
    color: var(--qp-muted);
    font-family: 'Lato', sans-serif;
    font-size: 0.93em;
    padding: 0.5em 0.8em;
    border-radius: 4px;
    pointer-events: none;
    max-width: min(75%, 460px);
}
.qp-hint b { color: var(--qp-fg); font-weight: 700; }

.qp-banner {
    position: absolute; left: 12px; right: 12px; top: 12px;
    display: flex; flex-direction: column; gap: 6px;
    pointer-events: none;
}
.qp-banner .qp-msg {
    pointer-events: auto;
    display: flex; align-items: flex-start; gap: 8px;
    background: var(--qp-bg);
    border: 1px solid var(--qp-border);
    border-left: 3px solid var(--qp-fg);
    border-radius: 4px;
    padding: 0.5em 0.7em;
    font-family: 'Lato', sans-serif;
    font-size: 0.85em;
    max-width: 620px;
}
.qp-banner .qp-msg.qp-warn { border-left-color: var(--qp-danger); color: var(--qp-danger); }
.qp-banner .qp-msg .qp-x { margin-left: auto; cursor: pointer; color: var(--qp-muted); font-weight: 700; padding: 0 2px; }
.qp-banner .qp-msg .qp-x:hover { color: var(--qp-fg); }

.qp-panel { display: flex; flex-direction: column; gap: 1.4em; }
.qp-section h4 {
    margin: 0 0 0.5em 0;
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--qp-muted);
    border-bottom: 1px solid var(--qp-border);
    padding-bottom: 0.35em;
}
.qp-section { font-family: 'Lato', sans-serif; font-size: 1em; }

.qp-select, .qp-input {
    font-family: 'Lato', sans-serif;
    background: var(--qp-bg);
    color: var(--qp-fg);
    border: 1px solid var(--qp-border);
    border-radius: 4px;
    padding: 0.4em 0.5em;
    font-size: 0.95em;
}
.qp-select { width: 100%; }
.qp-field { display: flex; flex-direction: column; gap: 4px; font-size: 0.9em; color: var(--qp-muted); margin-bottom: 0.6em; }
.qp-field:last-child { margin-bottom: 0; }
.qp-row { display: flex; gap: 0.5em; align-items: center; flex-wrap: wrap; }

.qp-term-list { display: flex; flex-direction: column; gap: 4px; max-height: 200px; overflow-y: auto;}
.qp-term {
    display: flex; align-items: center; gap: 8px;
    border: 1px solid var(--qp-border);
    border-radius: 4px;
    padding: 0.35em 0.55em;
    cursor: pointer;
}
.qp-term:hover { border-color: var(--qp-link); }
.qp-term.qp-highlighted { border-color: var(--qp-link); background: var(--qp-link-soft); }
.qp-term .qp-coeff { font-family: var(--qp-mono); font-weight: 700; min-width: 24px; text-align: right; }
.qp-term .qp-word { font-family: var(--qp-mono); font-size: 0.9em; flex: 1; overflow-x: auto; white-space: nowrap; }
.qp-term .qp-word .qp-sep { color: var(--qp-muted); padding: 0 2px; }
.qp-term button.qp-rm {
    border: none; background: transparent; color: var(--qp-muted);
    cursor: pointer; font-size: 1em; line-height: 1; padding: 2px 4px; font-family: inherit;
}
.qp-term button.qp-rm:hover { color: var(--qp-danger); }
.qp-empty-note { color: var(--qp-muted); font-style: italic; }
.qp-app .qp-empty-note { font-size: 0.95em; }

.qp-draft-bar {
    display: flex; align-items: center; gap: 6px; flex-wrap: wrap;
    border: 1px dashed var(--qp-muted);
    border-radius: 4px;
    padding: 0.5em 0.6em;
    margin-bottom: 0.6em;
    font-family: var(--qp-mono);
    font-size: 0.9em;
}

.qp-inspector-row { display: flex; justify-content: space-between; gap: 8px; font-size: 0.9em; padding: 2px 0; }
.qp-inspector-row .qp-k { color: var(--qp-muted); }
.qp-inspector-row .qp-v { font-family: var(--qp-mono); }

.qp-history-list { display: flex; flex-direction: column; gap: 2px; max-height: 160px; overflow-y: auto; }
.qp-history-list .qp-h-item {
    font-size: 0.85em; padding: 3px 6px; border-radius: 4px; cursor: pointer; color: var(--qp-muted);
}
.qp-history-list .qp-h-item:hover { background: var(--qp-muted-bg); }
.qp-history-list .qp-h-item.qp-current { color: var(--qp-link); font-weight: 700; }

details.qp-help summary {
    cursor: pointer; font-size: 0.8em; text-transform: uppercase; letter-spacing: 0.06em;
    color: var(--qp-muted); font-weight: 700; list-style: none;
}
details.qp-help summary::-webkit-details-marker { display: none; }
details.qp-help summary::before { content: "+ "; }
details.qp-help[open] summary::before { content: "- "; }
details.qp-help .qp-body { padding-top: 0.6em; font-size: 0.92em; color: var(--qp-fg); display: flex; flex-direction: column; gap: 0.6em; }
details.qp-help .qp-body code { font-family: var(--qp-mono); }

input[type="range"].qp-range { accent-color: var(--qp-fg); width: 100%; }

/* A bundled arrow's name strip: sized/positioned in px by
   updateBundleNameOverlay() in app.js, one per bundle. Same idea as
   .qp-term .qp-word below — a name longer than the box scrolls into view
   instead of being cut down to whatever fits — but scrolled via the custom
   bar (.qp-bundle-thumb-track/.qp-bundle-thumb) underneath it, not a native
   scrollbar: on a box this small, a custom-styled native one rendered a
   thumb with no usable drag range. */
.qp-bundle-name {
    position: absolute;
    font-family: var(--qp-mono);
    font-size: 10px;
    line-height: 13px;
    white-space: nowrap;
    overflow: hidden; /* scrolled programmatically only, via el.scrollLeft */
    text-align: left;
    user-select: none;
}

.qp-bundle-thumb-track {
    position: absolute;
    background: var(--qp-muted-bg);
    border-radius: 3px;
    cursor: pointer;
}
.qp-bundle-thumb {
    position: absolute;
    top: 0; height: 100%;
    background: var(--qp-muted);
    border-radius: 3px;
    cursor: grab;
}
.qp-bundle-thumb:hover { background: var(--qp-link); }
.qp-bundle-thumb.qp-dragging { background: var(--qp-link); cursor: grabbing; }

.qp-modal-overlay {
    position: fixed; inset: 0; z-index: 100;
    background: rgba(0, 0, 0, 0.4);
    display: none; align-items: center; justify-content: center;
    padding: 20px;
}
.qp-modal-overlay.qp-open { display: flex; }
.qp-modal-box {
    background: var(--qp-bg);
    border: 1px solid var(--qp-border);
    border-radius: 4px;
    padding: 1.2em;
    width: min(340px, 100%);
    display: flex; flex-direction: column; gap: 0.7em;
    font-family: 'Lato', sans-serif;
}
.qp-modal-box h4 { font-family: 'Merriweather', serif; font-size: 1.1em; margin: 0; }
.qp-modal-box p { font-size: 0.9em; color: var(--qp-muted); margin: 0; }
.qp-modal-box input[type="text"] { width: 100%; font-size: 0.95em; }
.qp-modal-actions { display: flex; justify-content: flex-end; gap: 0.5em; margin-top: 2px; flex-wrap: wrap; }
.qp-modal-box.qp-wide { width: min(560px, 92vw); }
.qp-modal-box textarea {
    width: 100%;
    height: 220px;
    resize: vertical;
    box-sizing: border-box;
    font-family: var(--qp-mono);
    font-size: 0.8em;
    background: var(--qp-muted-bg);
    color: var(--qp-fg);
    border: 1px solid var(--qp-border);
    border-radius: 4px;
    padding: 0.6em;
}

.qp-credit { text-align: center; color: var(--qp-muted); font-size: 0.85em; padding: 0.6em 0 1.2em; font-family: 'Lato', sans-serif; }

/* Explicit light/dark override (e.g. a hosting page's theme toggle) beats
   the OS preference above. Same values as the dark block above. */
:root[data-theme="dark"] {
    --qp-bg: #181818;
    --qp-fg: #e0e0e0;
    --qp-muted: #aaa;
    --qp-muted-bg: #1f1f1f;
    --qp-muted-bg-hover: #333;
    --qp-border: #333;
    --qp-link: #8ab4f8;
    --qp-link-hover: #a2c0ff;
    --qp-link-soft: #202840;
    --qp-danger: #e2867c;
    --qp-danger-soft: #3a1e1c;
}