:root {
    --bg: #fbf1c7;
    --bg-soft: #f2e5bc;
    --surface: #ebdbb2;
    --border: #d5c4a1;
    --fg: #3c3836;
    --fg-muted: #665c54;
    --accent: #458588;
    --accent-hover: #076678;
    --highlight: #d65d0e;
    --red: #cc241d;
    --green: #98971a;
    --yellow: #d79921;
    --transition: 0.2s ease;
    --radius: 10px;
    --max-width: 42rem;
    --font: "Segoe UI", system-ui, -apple-system, sans-serif;
}

body.dark {
    --bg: #282828;
    --bg-soft: #1d2021;
    --surface: #3c3836;
    --border: #504945;
    --fg: #ebdbb2;
    --fg-muted: #bdae93;
    --accent: #83a598;
    --accent-hover: #8ec07c;
    --highlight: #fe8019;
    --red: #fb4934;
    --green: #b8bb26;
    --yellow: #fabd2f;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font);
    font-size: 1.05rem;
    line-height: 1.65;
    color: var(--fg);
    background-color: var(--bg);
    transition:
        background-color var(--transition),
        color var(--transition);
}

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

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
    text-underline-offset: 0.15em;
}

#theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
    color: var(--fg);
    cursor: pointer;
    transition:
        opacity var(--transition),
        background var(--transition),
        border-color var(--transition);
}

#theme-toggle:hover {
    border-color: var(--accent);
}

#theme-toggle.hidden {
    opacity: 0;
    pointer-events: none;
}

#theme-toggle svg {
    width: 1.1rem;
    height: 1.1rem;
}

#theme-toggle .icon-sun {
    display: block;
}

#theme-toggle .icon-moon {
    display: none;
}

body.dark #theme-toggle .icon-sun {
    display: none;
}

body.dark #theme-toggle .icon-moon {
    display: block;
}

.page {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3.5rem 1.5rem 4rem;
}

.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.avatar {
    width: 7.5rem;
    height: 7.5rem;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border);
    background: var(--surface);
}

.hero h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.greeting {
    margin: 0;
    font-size: 1rem;
    color: var(--fg-muted);
}

.section {
    margin-bottom: 2.5rem;
}

.section h2 {
    margin: 0 0 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--fg-muted);
}

.section p {
    margin: 0 0 1rem;
}

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

.highlight {
    color: var(--highlight);
    font-weight: 500;
}

.link-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.link-list a {
    display: inline-block;
}

.project-group {
    margin-bottom: 1.25rem;
}

.project-group:last-child {
    margin-bottom: 0;
}

.project-group > .label {
    margin: 0 0 0.5rem;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--fg);
}

.project-subgroup {
    margin: 0 0 0.75rem 0.75rem;
}

.project-subgroup:last-child {
    margin-bottom: 0;
}

.project-subgroup > .label {
    margin: 0 0 0.35rem;
    font-size: 0.85rem;
    color: var(--fg-muted);
}

.book-pick {
    padding: 1rem 1.15rem;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--fg);
    text-decoration: none;
}

.contact-link:hover {
    color: var(--accent);
}

.contact-link svg {
    flex-shrink: 0;
    width: 1.1rem;
    height: 1.1rem;
    color: var(--fg-muted);
}

.contact-link:hover svg {
    color: var(--accent);
}

.contact-link .strava-icon path:first-child {
    fill: var(--highlight);
}

.contact-link .strava-icon path:last-child {
    fill: var(--yellow);
}

.site-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--fg-muted);
    text-align: center;
}

@media (min-width: 540px) {
    .hero {
        flex-direction: row;
        text-align: left;
        align-items: center;
        gap: 1.5rem;
    }

    .hero-text {
        flex: 1;
    }
}