/* CSS Reset for consistent spacing */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    margin: 0;
    padding: 0;
}

/* Text for search engines and screen readers only - takes no space on screen */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* Theme Variables */
:root {
    /* Light Theme (Default) */
    --bg-primary: #f0f0f0;
    --bg-secondary: #fff;
    --bg-tertiary: #f9f9f9;
    --text-primary: #333;
    --text-secondary: #666;
    --text-accent: #ff0000ed;
    --border-color: #ddd;
    --border-light: #e0e0e0;
    --nav-bg: #2c3e50;
    --nav-text: white;
    --button-bg: #455a64;
    --button-hover: #333333;
    --input-bg: white;
    --input-border: #ddd;
    --shadow: rgba(0,0,0,0.1);
    --overlay: rgba(0,0,0,0.5);
}