body{margin:40px auto;max-width:650px;line-height:1.6;font-size:18px;color:#fff;background-color:#000;padding:0 10px;font-family:'SF Mono','Monaco','Inconsolata','Fira Code',monospace}h1,h2,h3{line-height:1.2}

/* Custom underlines for links that work with MathJax */
a {
    color: #fff;
    text-decoration: none;
    border-bottom: 1px solid #fff;
    padding-bottom: 1px;
}

a:hover {
    border-bottom: 2px solid #fff;
}


/* Toggle buttons */
#light-mode-toggle,
#accessibility-toggle,
#elliptic-curve-toggle {
    position: fixed;
    top: 20px;
    background: #333;
    border: 2px solid #fff;
    color: #fff;
    padding: 10px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 1000;
    transition: all 0.3s ease;
}

#light-mode-toggle {
    right: 140px;
}

#accessibility-toggle {
    right: 80px;
}

#elliptic-curve-toggle {
    right: 20px;
}

#light-mode-toggle:hover,
#accessibility-toggle:hover,
#elliptic-curve-toggle:hover {
    background: #555;
    transform: scale(1.1);
}

#light-mode-toggle:focus,
#accessibility-toggle:focus,
#elliptic-curve-toggle:focus {
    outline: 3px solid #ffff00;
    outline-offset: 2px;
}

/* Elliptic curve canvas */
#elliptic-curve-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    display: none;
    opacity: 0.3;
    pointer-events: auto;
}

/* Make content container not interfere with canvas when curve is active */
#elliptic-curve-canvas.active ~ .container {
    pointer-events: none;
}

#elliptic-curve-canvas.active ~ .container a {
    pointer-events: auto;
}

#elliptic-curve-canvas.active {
    display: block;
}

/* Accessibility mode styles */
body.accessibility-mode {
    font-size: 24px;
    line-height: 1.8;
    background-color: #000;
    color: #ffff00;
    font-weight: 500;
}

body.accessibility-mode a {
    color: #00ffff;
    border-bottom-color: #00ffff;
    border-bottom-width: 2px;
}

body.accessibility-mode a:hover {
    background-color: #333;
    border-bottom-width: 3px;
}


body.accessibility-mode h1,
body.accessibility-mode h2,
body.accessibility-mode h3 {
    color: #ffffff;
    text-decoration: underline;
    margin-top: 1.5em;
    margin-bottom: 0.75em;
}

body.accessibility-mode #accessibility-toggle {
    background: #ffff00;
    color: #000;
    border-color: #000;
}

body.accessibility-mode #accessibility-toggle:hover {
    background: #ffcc00;
}

/* Light mode styles */
body.light-mode {
    background-color: #ffffff;
    color: #333333;
}

body.light-mode a {
    color: #0066cc;
    border-bottom-color: #0066cc;
}

body.light-mode a:hover {
    color: #0052a3;
    border-bottom-color: #0052a3;
}


body.light-mode #light-mode-toggle,
body.light-mode #accessibility-toggle,
body.light-mode #elliptic-curve-toggle {
    background: #ffffff;
    border-color: #333333;
    color: #333333;
}

body.light-mode #light-mode-toggle:hover,
body.light-mode #accessibility-toggle:hover,
body.light-mode #elliptic-curve-toggle:hover {
    background: #f0f0f0;
}

/* Light mode + Accessibility mode combined */
body.light-mode.accessibility-mode {
    background-color: #ffffff;
    color: #000000;
    font-size: 24px;
    line-height: 1.8;
    font-weight: 500;
}

body.light-mode.accessibility-mode a {
    color: #0000ff;
    border-bottom-color: #0000ff;
    border-bottom-width: 2px;
}

body.light-mode.accessibility-mode a:hover {
    background-color: #ffff00;
    border-bottom-width: 3px;
}


body.light-mode.accessibility-mode h1,
body.light-mode.accessibility-mode h2,
body.light-mode.accessibility-mode h3 {
    color: #000000;
    text-decoration: underline;
}

body.light-mode.accessibility-mode #accessibility-toggle {
    background: #000000;
    color: #ffffff;
    border-color: #ffffff;
}

body.light-mode.accessibility-mode #accessibility-toggle:hover {
    background: #333333;
}