/* ============================================
   Andrew Agathon — Personal Identity Website
   Light, clean, professional, readable
   ============================================ */

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

:root {
    --color-bg: #fafaf8;
    --color-surface: #ffffff;
    --color-text: #000000;
    --color-text-secondary: #111111;
    --color-text-muted: #333333;
    --color-accent: #1a3a55;
    --color-accent-hover: #0f2a40;
    --color-border: #e0ddd8;
    --color-error: #c0392b;
    --font-heading: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Source Serif 4', Georgia, serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --max-width: 720px;
    --spacing-section: 4rem;
}

html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
}

/* --- Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: transparent;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.navbar.scrolled {
    background: var(--color-surface);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.navbar-brand {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    letter-spacing: 0.02em;
}

.navbar-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-text);
}

.navbar-mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--color-text);
    cursor: pointer;
}

/* --- Mobile Menu --- */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--color-surface);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}

.mobile-menu.open {
    display: flex;
}

.mobile-menu a {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--color-text);
    text-decoration: none;
}

.mobile-menu-close {
    position: absolute;
    top: 1rem;
    right: 2rem;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--color-text);
    cursor: pointer;
}

/* --- Main Content --- */
main {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    padding-top: 5rem;
}

/* --- Hero --- */
.hero {
    padding: var(--spacing-section) 0;
    border-bottom: 1px solid var(--color-border);
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 600;
    line-height: 1.15;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.hero-subtitle {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.5rem;
}

.hero-intro {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    font-style: italic;
}

/* --- Sections --- */
.section {
    padding: var(--spacing-section) 0;
    border-bottom: 1px solid var(--color-border);
}

.section:last-child {
    border-bottom: none;
}

.section h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--color-text);
}

.section p {
    margin-bottom: 1rem;
    color: var(--color-text);
}

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

/* --- Work --- */
.work-role {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
}

/* --- Writing List --- */
.writing-list {
    list-style: none;
}

.writing-entry {
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--color-border);
}

.writing-entry:last-child {
    border-bottom: none;
}

.writing-year {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-right: 0.75rem;
}

.writing-type {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.writing-entry h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0.4rem 0 0.3rem;
}

.writing-entry h3 a {
    color: var(--color-text);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.writing-entry h3 a:hover {
    border-bottom-color: var(--color-accent);
}

.writing-entry p {
    font-size: 0.95rem;
    color: var(--color-text);
}

/* --- Links --- */
.links-list {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
}

.links-list a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent);
    text-decoration: none;
    letter-spacing: 0.04em;
    transition: color 0.2s;
}

.links-list a:hover {
    color: var(--color-accent-hover);
}

/* --- Nate Essay --- */
.nate-essay {
    padding-top: 2rem;
    padding-bottom: var(--spacing-section);
}

.essay-header {
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 2.5rem;
}

.essay-header h1 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 0.75rem;
}

.essay-header time {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    letter-spacing: 0.04em;
}

.essay-section {
    margin-bottom: 2.5rem;
}

.essay-section h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.essay-section p {
    margin-bottom: 1rem;
    color: var(--color-text);
}

.essay-byline {
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-style: italic;
    color: var(--color-text-muted);
    margin-bottom: 0.5rem;
}

.essay-image {
    display: block;
    width: 960px;
    max-width: calc(100vw - 2rem);
    height: auto;
    margin: 2.5rem 0;
    margin-left: 50%;
    transform: translateX(-50%);
    border-radius: 4px;
}

/* --- FAQ --- */
.essay-faq {
    margin-top: 3rem;
    padding-top: 2.5rem;
    border-top: 1px solid var(--color-border);
}

.essay-faq h2 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.faq-item {
    margin-bottom: 2rem;
}

.faq-item h3 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

.faq-item p {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

/* --- Sources --- */
.essay-sources {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
}

.essay-sources h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.sources-list {
    list-style: none;
    counter-reset: source-counter;
    padding-left: 0;
}

.sources-list li {
    counter-increment: source-counter;
    margin-bottom: 1rem;
    padding-left: 2rem;
    position: relative;
    font-size: 0.9rem;
    line-height: 1.6;
}

.sources-list li::before {
    content: counter(source-counter) ".";
    position: absolute;
    left: 0;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.sources-list a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

.sources-list a:hover {
    color: var(--color-accent-hover);
}

.source-description {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* --- Contact Form --- */
.contact-section h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.contact-section > p {
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.contact-form {
    max-width: 520px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.65rem 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.form-group textarea {
    resize: vertical;
}

.form-error {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-error);
    margin-top: 0.3rem;
}

.btn-submit {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 0.75rem 2rem;
    background: var(--color-text);
    color: var(--color-surface);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-submit:hover {
    background: var(--color-accent);
}

/* --- Thank You --- */
.thank-you-section {
    text-align: center;
    padding: var(--spacing-section) 0;
}

.thank-you-section h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.thank-you-section p {
    color: var(--color-text-secondary);
    margin-bottom: 1rem;
}

.thank-you-section a {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent);
    text-decoration: none;
}

/* --- Footer --- */
.site-footer {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem 1.5rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.site-footer p {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.04em;
}

/* --- Links (general) --- */
a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* --- Responsive --- */
@media (max-width: 640px) {
    html {
        font-size: 16px;
    }

    .navbar-links {
        display: none;
    }

    .navbar-mobile-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 0.72rem;
    }

    main {
        padding-top: 4rem;
    }

    .essay-header h1 {
        font-size: 1.7rem;
    }

    .links-list {
        flex-direction: column;
        gap: 0.75rem;
    }
}