/* Base theme setup using modern light-dark() function */
:root {
    color-scheme: light dark;

    /* Theme-aware colors using light-dark() */
    --color-bg: light-dark(#ffffff, #0d0d0d);
    --color-bg-alt: light-dark(#f5f5f5, #1a1a1a);
    --color-bg-elevated: light-dark(#ffffff, #242424);

    --color-text: light-dark(#1a1a1a, #e5e5e5);
    --color-text-muted: light-dark(#666666, #999999);
    --color-text-subtle: light-dark(#888888, #777777);

    --color-border: light-dark(#e0e0e0, #333333);
    --color-border-subtle: light-dark(#f0f0f0, #2a2a2a);

    /* Accent - subtle for minimal design */
    --color-accent: light-dark(#333333, #e5e5e5);
    --color-accent-hover: light-dark(#000000, #ffffff);

    /* Interactive elements */
    --color-link: light-dark(#1a1a1a, #e5e5e5);
    --color-link-hover: light-dark(#000000, #ffffff);

    /* Tags */
    --color-tag-bg: light-dark(#f0f0f0, #2a2a2a);
    --color-tag-text: light-dark(#444444, #bbbbbb);
    --color-tag-bg-active: light-dark(#1a1a1a, #e5e5e5);
    --color-tag-text-active: light-dark(#ffffff, #1a1a1a);

    /* Year selector fading */
    --opacity-year-1: 1;
    --opacity-year-2: 0.8;
    --opacity-year-3: 0.6;
    --opacity-year-4: 0.4;
    --opacity-year-5: 0.25;

    /* Typography */
    --font-title: 'Caveat', cursive;
    --font-body: 'Special Elite', monospace;
    --font-mono: 'Roboto Mono', monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Layout */
    --max-width: 1200px;
    --sidebar-width: 30%;
    --main-width: 70%;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

/* Force light theme */
[data-theme="light"] {
    color-scheme: light;
}

/* Force dark theme */
[data-theme="dark"] {
    color-scheme: dark;
}

/* Reset and base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: background-color var(--transition-normal),
                color var(--transition-normal);
    min-height: 100vh;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Selection colors */
::selection {
    background-color: var(--color-accent);
    color: var(--color-bg);
}