/* ==========================================================================
   Seth Leggatt - Personal Website Stylesheet
   A clean, accessible design for musician, coder, and accessibility consultant
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette - Soft, comfortable, accessible colors */
    --color-background: #F5FFFA;        /* MintCream - soft, easy on eyes */
    --color-surface: #FFFFFF;           /* White - clean card surfaces */
    --color-primary: #2F4F4F;           /* DarkSlateGray - main text, high contrast */
    --color-secondary: #556B2F;         /* DarkOliveGreen - accent for links */
    --color-accent: #708090;            /* SlateGray - subtle accents */
    --color-nav-background: #F0F8FF;    /* AliceBlue - soft nav background */
    --color-nav-text: #2F4F4F;          /* DarkSlateGray - nav text */
    --color-link-hover: #6B8E23;        /* OliveDrab - warmer hover state */
    --color-border: #D3D3D3;            /* LightGray - subtle borders */
    
    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 18px;
    --font-size-large: 24px;
    --font-size-h1: 36px;
    --font-size-small: 14px;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 48px;
    --spacing-xl: 64px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* --------------------------------------------------------------------------
   Base Styles & Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--font-size-base);
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-background);
    color: var(--color-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --------------------------------------------------------------------------
   Accessibility - Focus States
   -------------------------------------------------------------------------- */
:focus {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

:focus-visible {
    outline: 3px solid var(--color-secondary);
    outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Navigation Styles
   -------------------------------------------------------------------------- */
#MainNav {
    background-color: var(--color-nav-background);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

#MainNav nav {
    max-width: 900px;
    margin: 0 auto;
}

.nav {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    align-items: center;
}

.nav li {
    margin: 0;
}

.nav a {
    display: inline-block;
    text-decoration: none;
    color: var(--color-nav-text);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: 
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.nav a:hover {
    background-color: var(--color-surface);
    color: var(--color-link-hover);
}

.nav a:focus {
    background-color: var(--color-surface);
    color: var(--color-secondary);
}

/* --------------------------------------------------------------------------
   Main Content Area
   -------------------------------------------------------------------------- */
main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-md);
}

main > div {
    background-color: var(--color-surface);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 
        0 4px 6px rgba(0, 0, 0, 0.05),
        0 1px 3px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    width: 100%;
    text-align: center;
    border: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1 {
    font-size: var(--font-size-h1);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

p {
    font-size: var(--font-size-base);
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

p:last-child {
    margin-bottom: 0;
}

/* First paragraph after h1 - intro text */
h1 + p {
    font-size: var(--font-size-large);
    color: var(--color-primary);
    font-weight: 400;
}

/* --------------------------------------------------------------------------
   Links (Additional styling if needed beyond nav)
   -------------------------------------------------------------------------- */
a {
    color: var(--color-secondary);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media screen and (max-width: 600px) {
    :root {
        --font-size-h1: 28px;
        --font-size-large: 20px;
        --font-size-base: 16px;
    }
    
    main {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    main > div {
        padding: var(--spacing-md);
    }
    
    .nav {
        gap: var(--spacing-xs);
    }
    
    .nav a {
        padding: var(--spacing-xs);
        font-size: var(--font-size-small);
    }
}

/* --------------------------------------------------------------------------
   Reduced Motion Preference
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}