/* === Base === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0a0a0a;
    --white: #fefefe;
    --gray-dark: #444;
    --gray: #888;
    --gray-light: #C8CECC;
    --cream: #E4E8E6;
    --accent: #A80900;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--cream);
    color: var(--black);
    line-height: 1.6;
}

::selection {
    background: var(--black);
    color: var(--cream);
}

/* === Red left bar === */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: var(--accent);
    z-index: 100;
}

/* === Scroll progress === */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent);
    width: 0%;
    z-index: 101;
    transition: width 0.1s linear;
}

/* === Typography === */
h1 {
    font-size: 2.25rem;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.02em;
    max-width: 580px;
}

h2 {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray);
}

h3 {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid var(--gray-light);
    transition: border-color 0.2s, color 0.2s;
}

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

/* === Header === */
header {
    padding: 2.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.header-top {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.name {
    font-weight: 500;
    font-size: 1rem;
    border: none;
}

.name:hover {
    color: var(--black);
}

.location {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray);
}

nav {
    display: flex;
    gap: 2rem;
}

nav a {
    font-size: 0.9rem;
    border: none;
    color: var(--gray-dark);
}

nav a:hover,
nav a.active {
    color: var(--black);
}

nav a.active {
    position: relative;
}

nav a.active::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    right: 0;
    height: 1.5px;
    background: var(--accent);
}

/* === Main === */
main {
    max-width: 900px;
    margin: 0 auto;
    padding: 4rem 3rem 6rem;
}

/* === Hero === */
.hero {
    margin-bottom: 6rem;
}

.hero-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* === Sections === */
section {
    margin-bottom: 5rem;
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-light);
}

.section-number {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--accent);
}

/* === Work === */
.work-list {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.work-entry {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 2rem;
}

.work-role {
    font-weight: 500;
    font-size: 1rem;
}

.work-org {
    display: block;
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray);
    margin-bottom: 0.5rem;
}

.work-details p {
    color: var(--gray-dark);
    font-size: 0.95rem;
}

/* === Writing === */
.writing-feature {
    max-width: 400px;
}

.writing-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.writing-feature p {
    color: var(--gray-dark);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.writing-feature a {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Expertise === */
.expertise-grid {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem 3rem;
}

.expertise-grid li {
    font-size: 0.95rem;
    color: var(--gray-dark);
    position: relative;
    padding-left: 1rem;
}

.expertise-grid li::before {
    content: "—";
    position: absolute;
    left: 0;
    color: var(--gray);
}

/* === Speaker === */
.speaker-body {
    max-width: 600px;
}

.speaker-lead {
    font-size: 1.1rem;
    font-weight: 400;
    color: var(--black);
    line-height: 1.5;
    margin-bottom: 1.25rem;
}

.speaker-body p {
    font-size: 0.95rem;
    color: var(--gray-dark);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.speaker-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.25rem 0 1.5rem;
}

.topic {
    font-family: 'Space Mono', monospace;
    font-size: 0.65rem;
    color: var(--gray-dark);
    padding: 4px 10px;
    border: 1px solid var(--gray-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.speaker-ctas {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.speaker-ctas a {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* === Downloads === */
.dl-list {
    display: flex;
    flex-direction: column;
}

.dl-item {
    display: grid;
    grid-template-columns: 180px 1fr auto;
    gap: 2rem;
    align-items: center;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--gray-light);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-light);
    transition: opacity 0.2s;
}

.dl-item:first-child {
    border-top: 1px solid var(--gray-light);
}

.dl-item:hover {
    opacity: 0.7;
}

.dl-item:hover .dl-title {
    color: var(--accent);
}

.dl-label {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray);
}

.dl-title {
    font-weight: 500;
    font-size: 1rem;
    margin-bottom: 0.25rem;
    border: none;
    transition: color 0.2s;
}

.dl-desc {
    font-size: 0.95rem;
    color: var(--gray-dark);
}

.dl-arrow {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    white-space: nowrap;
    border: none;
}

/* === Footer === */
footer {
    padding: 3rem;
    border-top: 1px solid var(--gray-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

.footer-contact a {
    font-weight: 500;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--gray);
    border: none;
}

.footer-links a:hover {
    color: var(--black);
}

.footer-copy {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

/* === About Page === */
.about-hero {
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: 3rem;
    align-items: start;
    margin-bottom: 4rem;
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

.about-intro h1 {
    font-size: 1rem;
    font-family: 'Space Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--gray);
    margin-bottom: 1rem;
}

.about-intro .lead {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.35;
}

.about-body {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
}

.about-col p {
    font-size: 0.95rem;
    color: var(--gray-dark);
    margin-bottom: 1.25rem;
}

.about-col h3 {
    margin-top: 2rem;
}

.about-col h3:first-child {
    margin-top: 0;
}

/* === Responsive === */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 1.5rem;
        padding: 2rem;
    }

    nav {
        gap: 1.25rem;
    }

    main {
        padding: 2rem;
    }

    h1 {
        font-size: 1.75rem;
    }

    .work-entry {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .expertise-grid {
        grid-template-columns: 1fr;
    }

    .dl-item {
        grid-template-columns: 1fr auto;
    }

    .dl-label {
        display: none;
    }

    footer {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .about-hero {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-image {
        max-width: 350px;
    }

    .about-body {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .speaker-ctas {
        flex-direction: column;
        gap: 1rem;
    }
}