/* Rotate handle style */
.rotate-handle {
    cursor: pointer;
    stroke: #222;
    stroke-width: 2;
    fill: #fff;
    r: 12;
    filter: drop-shadow(0 1px 2px #0002);
}
.rotate-handle:hover {
    fill: #ffe082;
}
svg .align-line {
    stroke: #d2691e;
    stroke-width: 4;
    stroke-dasharray: 12 8;
    opacity: 0.7;
}
/* Angles in a Triangle on a Straight Line Explorer custom styles */
body {
    background: #f9f9f9;
    color: var(--text-main);
    font-family: 'Segoe UI', 'Arial', sans-serif !important;
    margin: 0;
    padding: 0;
}
header.main-header h1 {
    text-align: center;
    color: var(--primary-blue);
    font-family: var(--font-heading);
    font-size: var(--font-size-h1);
    margin-top: 0;
}
.instructions {
    margin-bottom: 2rem;
    text-align: center;
    font-family: var(--font-main);
    color: var(--text-main);
}
.controls {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    font-family: var(--font-main);
}
.controls label {
    font-size: 1.1em;
    color: var(--text-main);
    font-family: var(--font-main);
}
.controls input[type="number"], .controls input[readonly] {
    width: 100px;
    margin-left: 5px;
    font-size: 1.1rem;
    padding: 0.5em;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-family: 'Segoe UI', 'Arial', sans-serif !important;
    color: var(--text-main);
}
.controls input[readonly] {
    background: #e9e9e9;
    border: none;
    color: #666;
}
button, .btn {
    background: var(--primary-green);
    color: var(--text-light);
    border: none;
    border-radius: 5px;
    padding: 7px 18px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.2s;
    font-family: var(--font-main);
}
button:hover, .btn:hover {
    background: var(--primary-blue);
}
.prompt {
    text-align: center;
    font-size: 1.15em;
    color: var(--text-main);
    margin-bottom: 18px;
    font-family: var(--font-main);
}
.canvas-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    padding: 1rem;
    min-height: 420px;
    border: 2px solid #ccc;
}
svg#triangles-canvas {
    background: var(--background-light);
    border: 1px solid #d0d0d0;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
body, header.main-header h1, .instructions, .controls, .controls label, .controls input[type="number"], .controls input[readonly], button, .btn, .prompt, .canvas-wrapper {
    font-family: 'Segoe UI', 'Arial', sans-serif !important;
}