:root {
    --pico-font-size: 95%;
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --bg-tertiary: #d6d6d6;
    --bg-h1: #ffffff;
    --bg-h2: #f9f9f9;
    --bg-h3: #ededed;
    --bg-block: #ededed; 
    --text-primary: #1c1c1c;
    --text-secondary: #1f1f1f;
    --text-contrast: #e7e7e7;
    --accent-primary: #101010;
    --accent-hover: #6a6a6a;
    --border-color: #cccccc;
}

html, body {
    height: 100%;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
}

main {
    height: calc(100% - 100px);
    background-color: var(--bg-primary);
}

button {
    margin: 10px 0;
    float: right;
    background-color: var(--accent-primary);
    color: var(--bg-primary);
    border: none;
    transition: background-color 0.1s;
}

button:hover {
    background-color: var(--accent-hover);
}

section {
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

th {
    font-weight: bold;
    color: var(--text-primary);
}

td {
    color: var(--text-secondary);
}

#results div {
    clear: both;
    height: calc(100% - 140px);
    overflow: scroll;
    background-color: var(--bg-secondary);
}

#options > div {
    height: calc(100% - 140px);
    overflow: scroll;
    background-color: var(--bg-secondary);
}

#report,
#output textarea{
    height: calc(100% - 140px);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

#help {
    cursor: pointer;
    color: var(--accent-primary);
}

#help:hover {
    color: var(--accent-hover);
}

#example code {
    display: block;
    white-space: pre;
    user-select: all;
    height: 300px;
    overflow: scroll;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.output {
    white-space: break-spaces;
    color: var(--text-secondary);
}

h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

body {
    max-width: 800px;
    margin: 20px auto;
    padding: 5px;
}

.heading {
    padding: 12px 10px;
    margin: 10px 0;
    cursor: pointer;
    transition: background-color 0.1s;
    user-select: none;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.heading:hover {
    color: var(--accent-hover);
}

.heading.h1 {
    font-size: 24px;
    font-weight: bold;
    color: var(--text-primary);
    background-color: var(--bg-h1);
}

.heading.h2 {
    font-size: 20px;
    font-weight: bold;
    margin-left: 0;
    color: var(--text-primary);
    background-color: var(--bg-h2);
}

.heading.h3 {
    font-size: 16px;
    font-weight: bold;
    margin-left: 10px;
    color: var(--text-secondary);
    background-color: var(--bg-h3);
}

.content {
    display: none;
    padding: 2px 15px 4px 15px;
    margin: 0 0 0 0;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
}

.content.h1-content {
    margin-left: 20px;
}

.content.h2-content {
    margin-left: 0;
}

.content.h3-content {
    margin-left: 20px;
}

.arrow {
    display: inline-block;
    margin-right: 10px;
    transition: transform 0.1s;
    color: var(--accent-primary);
}

.heading.active .arrow {
    transform: rotate(90deg);
}

.block {
    padding: 6px; 
    display: block;
    background-color: var(--bg-block);
    border-radius: 4px;
    margin:6px;
}

.indent {
    margin-left:0.5rem;
}

/* Additional styling for inputs and form elements */
input, textarea, select {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent-primary);
    outline: none;
}

/* Scrollbar styling for webkit browsers */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Hyperlink styling */
a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: var(--accent-hover);
}

a:visited {
    color: var(--accent-primary);
}

a:active {
    color: var(--text-primary);
}

.home-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: background-color 0.3s;
}

.home-button:hover {
    background-color: var(--bg-tertiary);
    text-decoration: none;
}

.home-icon {
    width: 18px;
    height: 18px;
    color: var(--text-primary);
}
/* Page layout utilities */
.page-header {
    text-align: center;
    margin-bottom: 20px;
}

.page-title {
    margin: 10px 0 0 0;
}

.text-center {
    text-align: center;
}

/* Text colour utilities */
.text-grey { color: grey; }
.text-orange { color: orange; }
.text-red { color: red; }
.text-green { color: green; }

/* Spacer */
.spacer {
    height: 20px;
}