@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,400;1,9..144,600&family=Inter:wght@400;500;600&display=swap');

:root {
    --bg: #fbfaf7;
    --surface: #ffffff;
    --text: #17150f;
    --text-soft: #2c2a24;
    --muted: #6a655c;
    --rule: #1a1814;
    --hairline: #e6e1d6;

    --accent: #8a1a1a;
    --accent-soft: #f3e6e2;
    --accent-2: #1f5f55;
    --accent-2-soft: #e2ede9;

    --measure: 34rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: 'Fraunces', Georgia, 'Times New Roman', serif;
    font-variation-settings: 'opsz' 14;
    font-size: 18px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

applet { display: none; }

main.container {
    max-width: var(--measure);
    margin: 0 auto;
    padding: 2.5rem 1.25rem 5rem;
}

/* -------- Masthead -------- */

.hero {
    text-align: left;
    padding: 1rem 0 2.5rem;
    margin-bottom: 2.5rem;
    border-bottom: 1px solid var(--rule);
}
.hero .apple {
    display: inline-block;
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    opacity: 0.85;
}
.hero h1 {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 700;
    font-variation-settings: 'opsz' 144;
    font-size: clamp(2rem, 7vw, 2.9rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    margin: 0 0 0.9rem;
    color: var(--text);
}
.hero h1 em {
    font-style: italic;
    font-weight: 600;
    color: var(--accent);
}
.hero .byline {
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin: 0;
}
.hero .byline a {
    color: var(--muted);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 3px;
}
.hero .byline a.gh-link {
    text-decoration: none;
    display: inline-flex;
    vertical-align: middle;
    margin-left: 0.35em;
}
.hero .byline a.gh-link svg {
    display: block;
}

/* -------- Section heads -------- */

h3 {
    font-family: 'Inter', -apple-system, sans-serif;
    font-weight: 600;
    font-size: 0.78rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    line-height: 1.4;
    margin: 4rem 0 1.5rem;
    color: var(--accent);
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--hairline);
}

body > h1,
body > h2 { display: none; }

/* First paragraph after a section head: larger, drop cap */
h3 + p {
    font-size: 1.1em;
    line-height: 1.6;
}
h3 + p::first-letter {
    font-family: 'Fraunces', Georgia, serif;
    font-weight: 700;
    font-variation-settings: 'opsz' 144;
    font-size: 3.4em;
    line-height: 0.85;
    float: left;
    padding: 0.1em 0.12em 0 0;
    color: var(--accent);
}

/* -------- Body copy -------- */

p {
    margin: 0 0 1.15rem;
    color: var(--text-soft);
    hyphens: auto;
}
p i, p em { font-style: italic; }
p b, p strong { font-weight: 600; color: var(--text); }

a {
    color: var(--text);
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-decoration-color: var(--accent);
    text-underline-offset: 3px;
}
a:hover { color: var(--accent); }

ul { padding-left: 1.1rem; }
ul li { margin-bottom: 0.6rem; }
ul li p { margin-bottom: 0.3rem; }

img[src^="gifs/"] {
    vertical-align: middle;
    max-width: 100%;
    height: auto;
}

/* -------- Simulation -------- */

.simulation-container {
    margin: 2rem -0.4rem 2.5rem;
    padding: 0.75rem;
    background: var(--surface);
    border: 1px solid var(--hairline);
    border-radius: 2px;
}

.simulation-container canvas {
    width: 100%;
    max-width: 700px;
    height: auto;
    aspect-ratio: 700 / 475;
    display: block;
    margin: 0 auto;
    background: #fcfbf8;
    cursor: default;
    touch-action: none;
}

.simulation-container > div[id$="-controls"] {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 0.9rem;
    padding-top: 0.9rem;
    border-top: 1px solid var(--hairline);
}

.simulation-container button {
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 0.55rem 1.1rem;
    border: 1px solid var(--rule);
    border-radius: 2px;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    transition: background 0.12s ease, color 0.12s ease;
}
.simulation-container button:hover {
    background: var(--rule);
    color: var(--bg);
}
.simulation-container button:active { transform: translateY(1px); }
.simulation-container button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* -------- Question cards: journal-style hanging numeral -------- */

.question-card,
.tech-question-card {
    position: relative;
    margin: 1.75rem 0;
    padding: 0.25rem 0 0.25rem 3.2rem;
    min-height: 2.5rem;
}

.q-num {
    position: absolute;
    left: 0;
    top: 0.05em;
    font-family: 'Fraunces', Georgia, serif;
    font-variation-settings: 'opsz' 144;
    font-weight: 700;
    font-size: 1.75rem;
    line-height: 1;
    color: var(--accent);
    letter-spacing: -0.02em;
    min-width: 2.6rem;
    text-align: left;
}
.tech-question-card .q-num {
    color: var(--accent-2);
    font-size: 1.4rem;
    font-style: italic;
    font-weight: 600;
    top: 0.15em;
}

.q-body {
    font-size: 1rem;
    line-height: 1.65;
    color: var(--text-soft);
    border-left: 1px solid var(--hairline);
    padding-left: 1rem;
}
.q-body i { font-style: italic; }
.q-body b { font-weight: 600; color: var(--text); }

.tech-question-card .q-body {
    border-left-color: var(--accent-2-soft);
}

.tech-intro {
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 0.85rem;
    line-height: 1.55;
    color: var(--muted);
    padding: 1rem 0;
    margin: 2rem 0 1rem;
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    font-style: normal;
}

/* -------- Pull quote -------- */

blockquote {
    margin: 2rem 0;
    padding: 0.5rem 0 0.5rem 1.25rem;
    border-left: 3px solid var(--accent);
    font-style: italic;
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-soft);
}
blockquote p:last-child {
    font-style: normal;
    font-family: 'Inter', -apple-system, sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    margin-top: 0.6rem;
}

/* -------- Mobile -------- */

@media (max-width: 600px) {
    body { font-size: 17px; line-height: 1.6; }
    main.container { padding: 1.5rem 1.1rem 3rem; }
    .hero { padding: 0.5rem 0 1.75rem; margin-bottom: 1.75rem; }
    h3 { margin: 2.75rem 0 1.25rem; }
    h3 + p::first-letter {
        font-size: 3em;
        padding: 0.08em 0.1em 0 0;
    }
    .simulation-container {
        margin-left: -0.6rem;
        margin-right: -0.6rem;
        padding: 0.5rem;
    }
    .question-card,
    .tech-question-card {
        padding-left: 2.5rem;
    }
    .q-num { font-size: 1.4rem; min-width: 2rem; }
    .tech-question-card .q-num { font-size: 1.15rem; }
    .q-body { font-size: 0.98rem; padding-left: 0.8rem; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; animation: none !important; }
}