/* ============================================================
   Personal Website — Main Stylesheet
   Design tokens defined as CSS custom properties.
   No external dependencies. No framework.
   ============================================================ */

/* Design Tokens */
:root {
    --color-bg: #111111;
    --color-text: #cccccc;
    --color-accent: #7a5a9a;
    --color-accent-light: #9b7fc0;
    --color-muted: #666666;
    --color-border: #2a2a2a;
    --color-nav-link: #999999;

    --font-body: Georgia, 'Times New Roman', serif;
    --font-mono: 'Courier New', 'Lucida Console', Courier, monospace;

    --content-max-width: 700px;
    --line-height-body: 1.65;
}

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

/* Base */
html {
    font-size: 16px;
}

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

/* Links */
a {
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ============================================================
   Navigation
   ============================================================ */

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    font-family: var(--font-mono);
}

.nav-name {
    display: flex;
    align-items: center;
    line-height: 0;
}

.nav-name .site-logo {
    width: 45px;
    height: 45px;
    transition: filter 0.2s ease;
}

.nav-name:hover .site-logo {
    filter: drop-shadow(0 0 5px var(--color-accent));
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    color: var(--color-nav-link);
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: var(--color-text);
    text-decoration: none;
}

.nav-links a.active {
    color: var(--color-accent);
}

/* Mobile nav toggle button — hidden on desktop */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--color-text);
    font-family: var(--font-mono);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
}

/* ============================================================
   Content
   ============================================================ */

main {
    max-width: var(--content-max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

h1 {
    color: var(--color-accent);
    font-family: var(--font-body);
    font-size: 1.75rem;
    font-weight: normal;
    margin-bottom: 1.5rem;
}

h2 {
    color: var(--color-accent-light);
    font-family: var(--font-body);
    font-size: 1.25rem;
    font-weight: normal;
    margin: 2rem 0 0.75rem;
}

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.25rem;
}

hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: 2rem 0;
}

/* Muted / secondary text */
.muted {
    color: var(--color-muted);
    font-size: 0.875rem;
}

/* ============================================================
   Responsive — Mobile (max-width: 767px)
   Desktop layout (768px+) is unchanged.
   ============================================================ */

@media (max-width: 767px) {

    /* Show the toggle button */
    .nav-toggle {
        display: block;
    }

    /* Hide nav links by default on mobile; JS toggle reveals them */
    .nav-links {
        display: none;
        flex-direction: column;
        gap: 0.5rem;
        position: absolute;
        top: 100%;
        right: 0;
        left: 0;
        background-color: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 1.5rem;
    }

    /* Revealed state — JS adds this class */
    .nav-links.open {
        display: flex;
    }

    /* Make nav position-relative so the dropdown anchors correctly */
    nav {
        position: relative;
        flex-wrap: wrap;
    }

    /* Content padding reduction on small screens */
    main {
        padding: 1.5rem 1rem;
    }
}