:root {
    --background-main: #fffffff0;
    --forecolor-main: #1a1a1a;
    /* Light Theme Colors */
    --primary-color-light: #008ba3;
    --link-color-light: #008ba3;
    --background-accent: #008ba3;
    --background-header: #eaeaea;
    /* Material Design Cyan */
    --secondary-color-light: #00bcd4;
    /* Slightly darker Cyan */
    --background-color-light: #ffffff;
    /* Default light background */
    --container-bg-color-light: #fff;
    /* Light container background */
    --shadow-color-light: #0000001f;
    /* Shadow color (12% black) */
    --progress-bg-color-light: #f9f9f9;
    /* Progress background */
    --progress-color-light: #00bcd4;
    /* Match primary color */
    --error-bg-color-light: #ffcdd2;
    /* Google Material Light Red */
    --error-border-color-light: #d32f2f;
    /* Material Red */
    --error-text-color-light: #d32f2f;
    /* Material Red */
    --success-bg-color-light: #c8e6c9;
    /* Material Light Green */
    --success-border-color-light: #388e3c;
    /* Material Green for light border */
    --success-text-color-light: #388e3c;
    /* Material Green text */
    --text-color-light: #000000de;
    --text-color-dark: #000000de;
    /* High-emphasis text */
    --text-color-light-light: #a5a5a5;
    /* Medium Gray */
    --highlight-color-light: #f5f5f5;
    /* Light background highlight */

    /* Additional Light Theme Colors */
    --disabled-color-light: #e0e0e0;
    /* Disabled background */
    --disabled-text-color-light: #9e9e9e;
    /* Disabled text */
    --focus-color-light: #82b1ff;
    /* Focus outline color */
    --focus-color-close: #d32f2f;
    /* Material Red */

    /* Dark Theme Colors */
    --primary-color-dark: #011619;
    /* Darker Cyan */
    --secondary-color-dark: #005f6b;
    /* Even darker Cyan */
    --background-color-dark: #121212;
    /* Default dark background */
    --container-bg-color-dark: #1e1e1e;
    /* Dark container background */
    --shadow-color-dark: #ffffff1f;
    /* Shadow color (12% white) */
    --progress-bg-color-dark: #424242;
    /* Progress background */
    --progress-color-dark: #00bcd4;
    /* Match primary color */
    --error-bg-color-dark: #b71c1c;
    /* Darker red for contrast */
    --error-border-color-dark: #ef5350;
    /* Material Red */
    --error-text-color-dark: #ffcdd2;
    /* Material Red */
    --success-bg-color-dark: #2e7d32;
    /* Material Dark Green */
    --success-border-color-dark: #66bb6a;
    /* Material Green for dark border */
    --success-text-color-dark: #a5d6a7;
    /* Material Green text */

    --text-color-dark: #424242;
    --text-color-dark-light: #a5a5a5;
    /* High-emphasis text */
    --text-color-def: #424242;
    --highlight-color-dark: #212121;
    /* Dark background highlight */

    /* Additional Dark Theme Colors */
    --disabled-color-dark: #424242;
    /* Disabled background */
    --disabled-text-color-dark: #616161;
    /* Disabled text */
    --focus-color-dark: #448aff;
    /* Focus outline color */

    /* Font Sizes */
    --font-small: 0.875rem;
    --font-medium: 1rem;
    --font-large: 1.25rem;

    /* Spacing */
    --spacing-small: 0.5rem;
    --spacing-medium: 1rem;
    --spacing-large: 1.5rem;

    /* Border Radius */
    --border-radius: 0.4rem;

    --note-bg: white;
    /* Sticky note yellow */
    --header-bg: rgba(0, 0, 0, 0.1);
    --padding: 1rem;
    --border-radius: 0.3rem;
    --note-font: "Patrick Hand", cursive;
    /* Handwritten font */

    --divider-color-light: silver;
    --shadow: 0.15rem 0.15rem 0.25rem rgba(0, 0, 0, 0.1);

    --slidebar-icon-color: #008ba3;

    --widget-max-width: 48rem;
    --widget-min-width: 6.4rem;
    --widget-act-width: calc(100vw - 6.4rem);

    --widget-height: 66vh;
    --dialog-height: 84vh;
    --dialog-top-shift: -0.75rem;

    --success-color: #00bcd4;
    --success-ring-color: #00bcd4;
    --success-bg-color: #e8f5e9;
}

body {
    background-image: url('wallpaper.webp');
    /* Replace with the actual wallpaper path */
    background-size: cover;
    /* Ensures the wallpaper fully covers the viewport */
    background-repeat: no-repeat;
    /* Prevents tiling of the image */
    background-attachment: fixed;
    /* Keeps the background fixed while scrolling */
    background-position: center center;
    /* Centers the wallpaper */
    isolation: isolate;

    color-scheme: light;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}
/* Optional: Overlay for Modern Aesthetic */
body::before {
    content: '';
    /*position: absolute;*/
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}
main {
    display: flex; 
    flex-direction: row;
    vertical-align: middle;
    justify-content: center;    
    text-align: center;
    align-items: center;            
    margin: auto;
    padding: auto;
}
footer,.footer {
    text-align: center;
    color: var(--text-color-light-light);
    font-size: 0.875rem;
}
footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem 0;
    z-index: 1;
}
/*
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    align-items: left;
    padding: 0.5rem 1rem;
    justify-content: center;
    align-items: center;
}
main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    vertical-align: middle;
    color: var(--forecolor-main);
    min-height: 88vh;
    width: calc(100% - 1.25rem);
    max-width: 50rem;
    overflow-y: auto;
    overflow-x: auto;
    padding: 4rem;
    background-color: transparent;        
}

*/
div.error {
    background: transparent;
    color: var(--error-text-color-light);
    padding: 1rem;
    margin: 1.5rem;
    text-align: center;
}

h1.error {
    border: none;
    background: transparent;
    color: var(--error-text-color-light);
}

hr {
    /*border: none;*/
    border-top: 0.0625rem solid var(--divider-color-light);
    margin: 0.5rem 0;
}

hr.line {
    /*border: none;*/
    border-top: 0.0625rem solid var(--primary-color-light);
    margin: 0.5rem 0;
}

span.message {
    color: #616161;
    font-weight: bold;
}

body,
h1,
h2,
p {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    /* Google Material Design Font */
    line-height: 1.5;

    /* Improved readability for headings and text */
}

h3,
h4,
h5,
ul,
li,
label {

    /* Improved readability for headings and text */
}

a {
    color: var(--link-color-light);
    text-decoration: none;
    cursor: pointer;
}

a.link {
    color: var(--link-color-light);
    cursor: pointer;
    pointer-events: auto;
}

label.link {
    color: var(--link-color-light);
    cursor: pointer;
    pointer-events: auto;
}

input {
    padding: 0.625rem 0.75rem;
    /* 10px 12px */
    border: 0.15rem dashed gray;
    /* 2px */
    background: transparent;
    border-radius: 0.375rem;
    /* 6px */
    font-size: 1rem;
    /* 16px */
    width: 10.25rem;
    /* 250px */
    outline: none;
    transition: border-color 0.2s ease;
    color: #333;
}


input:focus {
    border-color: #007c89;
}

input.readonly {
    background: #eee;
    pointer-events: none;
    opacity: 0.6;
}

label input.readonly+span,
label input.readonly+label {
    color: #bbb;
}

select {
    padding: 10px 12px;
    border: 2px dashed var(--primary-color-light);
    background: transparent;
    border-radius: 6px;
    font-size: 16px;
    width: 250px;
    outline: none;
    transition: border-color 0.2s ease;
}


input[type="checkbox" i],
input[type="radio" i] {
    background-color: initial;
    cursor: default;
    appearance: auto;
    box-sizing: border-box;
    margin: 3px 3px 3px 4px;
    padding: initial;
    border: initial;
    width: 1rem;
}

button {
    border: none;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 0.35rem;
    padding: 0.75rem 1.5rem;    
    color: var(--background-color-light);
    background-color: var(--primary-color-light);
    transition: background-color 0.3s, box-shadow 0.3s;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.15);
}

button:hover {
    background-color: var(--secondary-color-light);
    box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.3);
}

button.disabled {
    background-color: var(--disabled-color-light);
    color: var(--disabled-text-color-light);
    cursor: not-allowed;
    box-shadow: none;
}

button:hover:not(.disabled) {
    background-color: var(--secondary-color-light);
    box-shadow: 0 0.2rem 0.4rem var(--shadow-color-light);
}

button:active:not(.disabled) {
    transform: scale(0.98);
}

button.secondary {
    background-color: white;
    color: var(--primary-color-dark);
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.05);
}

button:hover {
    background-color: var(--secondary-color-dark);
    box-shadow: 0 0.25rem 0.5rem rgba(255, 255, 255, 0.3);
}

button.secondary:hover {
    color: white;
    background-color: var(--secondary-color-dark);
    box-shadow: 0 0.25rem 0.5rem rgba(255, 255, 255, 0.3);
}

/**/
.overlay {
    position: fixed;
    inset: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(30, 41, 59, 0.44);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}


.error {
    /*color: var(--error-text-color-dark);*/
    color: crimson;
}

.ok {
    color: forestgreen;
}

.required {
    color: coral;
}

.attention {
    color: orange;
}

.hidden {
    display: none !important;
}

.btn-group {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}