/* Platform feature pages (Datasets & Calendars, Blogs & Newsletters, Prompts).
   Same editorial system as the getting-started page: Fraunces display,
   Geist body, JetBrains Mono code. Every colour is a theme variable. */

.pf {
    --pf-gutter: clamp(1.25rem, 4vw, 2.5rem);
    --pf-rule: color-mix(in srgb, var(--body-fg) 12%, transparent);
    --pf-rule-soft: color-mix(in srgb, var(--body-fg) 6%, transparent);
    --pf-quiet: var(--body-quiet-color);
    --pf-loud: var(--body-fg);
    --pf-accent: var(--primary);
    --pf-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
    --pf-sans: 'Geist', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --pf-serif: 'Fraunces', 'Iowan Old Style', Georgia, serif;
    font-family: var(--pf-sans);
    color: var(--pf-loud);
    margin: -24px -24px 0 -24px;
    overflow-x: hidden;
    line-height: 1.55;
}
.pf-wrap { max-width: 1100px; margin: 0 auto; padding: 0 var(--pf-gutter); }
.pf-wrap--tight { max-width: 820px; }

.pf-hero { padding: clamp(3rem, 8vw, 5rem) 0 clamp(2rem, 5vw, 3rem); border-bottom: 1px solid var(--pf-rule-soft); }
.pf-chapter {
    display: flex; align-items: baseline; gap: 0.75rem;
    font-family: var(--pf-mono); font-size: 0.72rem; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--pf-accent); margin-bottom: 1.25rem;
}
.pf-chapter::before { content: ''; width: 2.25rem; height: 1px; background: var(--pf-accent); transform: translateY(-0.18em); }
.pf-h1 {
    font-family: var(--pf-serif); font-variation-settings: 'opsz' 144, 'SOFT' 50; font-weight: 350;
    font-size: clamp(2.2rem, 5.5vw, 3.8rem); line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 1rem; max-width: 20ch;
}
.pf-h1 em { font-style: italic; font-weight: 300; font-variation-settings: 'opsz' 144, 'SOFT' 100; }
.pf-lede { font-size: 1.12rem; color: var(--pf-quiet); max-width: 44rem; margin: 0; }

.pf-sec { padding: clamp(2.5rem, 6vw, 4rem) 0; border-bottom: 1px solid var(--pf-rule-soft); }
.pf-sec--quiet { background: color-mix(in srgb, var(--body-fg) 2.5%, var(--body-bg)); }
.pf-h2 {
    font-family: var(--pf-serif); font-weight: 400; font-size: clamp(1.6rem, 3.4vw, 2.3rem); line-height: 1.15;
    letter-spacing: -0.015em; margin: 0 0 0.75rem;
}
.pf-h2 em { font-style: italic; font-weight: 300; }
.pf-sub { color: var(--pf-quiet); max-width: 44rem; margin: 0 0 2rem; font-size: 1.02rem; }

/* Numbered steps */
.pf-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1.25rem 2rem; margin-top: 1.5rem; }
.pf-step { border-top: 1px solid var(--pf-rule); padding-top: 1rem; }
.pf-step-num { font-family: var(--pf-serif); font-style: italic; font-size: 1.6rem; color: var(--pf-accent); line-height: 1; }
.pf-step h3 { font-size: 1.05rem; margin: 0.5rem 0 0.35rem; font-weight: 600; color: var(--pf-loud); }
.pf-step p { margin: 0; color: var(--pf-quiet); font-size: 0.95rem; }
.pf-step code, .pf-inline code { font-family: var(--pf-mono); font-size: 0.85em; background: color-mix(in srgb, var(--body-fg) 7%, var(--card-bg)); padding: 1px 6px; border-radius: 4px; }

/* Screenshots */
.pf-figures { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; margin-top: 1.5rem; }
.pf-figure { margin: 0; }
.pf-figure img {
    width: 100%; height: auto; display: block; border-radius: 10px;
    border: 1px solid var(--card-border); box-shadow: 0 18px 40px -22px rgba(0, 0, 0, 0.55);
    background: var(--card-bg);
}
.pf-figure figcaption { font-size: 0.82rem; color: var(--pf-quiet); margin-top: 0.6rem; }
.pf-figure figcaption strong { color: var(--pf-loud); font-weight: 600; }
.pf-figure--wide { grid-column: 1 / -1; }

/* Code */
.pf-code {
    margin: 1.25rem 0 0; padding: 1.1rem 1.25rem; border-radius: 10px; overflow-x: auto;
    background: var(--card-bg); border: 1px solid var(--card-border);
    font-family: var(--pf-mono); font-size: 0.82rem; line-height: 1.6; color: var(--pf-loud);
}
.pf-code .c { color: var(--pf-quiet); }
.pf-code .k { color: var(--pf-accent); }
.pf-code .s { color: var(--success-fg); }
.pf-caption { font-size: 0.82rem; color: var(--pf-quiet); margin: 0.6rem 0 0; }

/* Two-column "what you get" lists */
.pf-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem 2.5rem; margin-top: 1.5rem; }
.pf-list { list-style: none; margin: 0; padding: 0; }
.pf-list li { padding: 0.55rem 0; border-bottom: 1px solid var(--pf-rule-soft); font-size: 0.95rem; display: flex; gap: 0.75rem; align-items: baseline; }
.pf-list li::before { content: '→'; color: var(--pf-accent); font-family: var(--pf-mono); flex: none; }
.pf-list code { font-family: var(--pf-mono); font-size: 0.82rem; color: var(--pf-loud); }
.pf-list-title { font-family: var(--pf-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--pf-quiet); margin: 0 0 0.25rem; }

/* CTA band */
.pf-cta { padding: clamp(2.5rem, 6vw, 4rem) 0; text-align: center; }
.pf-cta h2 { font-family: var(--pf-serif); font-weight: 400; font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 0 0 0.6rem; }
.pf-cta p { color: var(--pf-quiet); margin: 0 auto 1.5rem; max-width: 36rem; }
.pf-btns { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }
.pf-btn, a.pf-btn:link, a.pf-btn:visited {
    display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.7rem 1.3rem; border-radius: 999px;
    font-size: 0.92rem; font-weight: 600; text-decoration: none; border: 1px solid var(--pf-accent); color: var(--pf-accent);
    transition: background 0.15s, color 0.15s;
}
.pf-btn--solid, a.pf-btn--solid:link, a.pf-btn--solid:visited { background: var(--pf-accent); color: var(--btn-primary-fg, var(--button-fg)); }
.pf-btn:hover { background: color-mix(in srgb, var(--pf-accent) 12%, transparent); }
.pf-btn--solid:hover { background: var(--primary-hover, var(--pf-accent)); }

/* Prompts page */
.pf-prompt { margin: 1.5rem 0 0; border: 1px solid var(--card-border); border-radius: 10px; background: var(--card-bg); overflow: hidden; }
.pf-prompt-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 0.75rem 1rem; border-bottom: 1px solid var(--pf-rule-soft); background: var(--card-header-bg); }
.pf-prompt-head h3 { margin: 0; font-size: 1rem; font-weight: 600; color: var(--pf-loud); }
.pf-prompt-head p { margin: 0.15rem 0 0; font-size: 0.82rem; color: var(--pf-quiet); }
.pf-copy {
    flex: none; font-family: var(--pf-mono); font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase;
    padding: 0.35rem 0.75rem; border-radius: 999px; border: 1px solid var(--pf-rule); background: transparent; color: var(--pf-quiet); cursor: pointer;
}
.pf-copy:hover, .pf-copy:focus-visible { border-color: var(--pf-accent); color: var(--pf-accent); outline: none; }
.pf-copy.is-done { border-color: var(--success-fg); color: var(--success-fg); }
.pf-prompt pre {
    margin: 0; padding: 1rem 1.1rem; white-space: pre-wrap; word-break: break-word;
    font-family: var(--pf-mono); font-size: 0.82rem; line-height: 1.6; color: var(--pf-loud);
}
.pf mark { background: color-mix(in srgb, var(--pf-accent) 18%, transparent); color: inherit; border-radius: 3px; padding: 0 3px; }
.pf-shape-rules { counter-reset: rule; margin: 1.25rem 0 0; padding: 0; list-style: none; }
.pf-shape-rules li { counter-increment: rule; display: grid; grid-template-columns: 2.2rem minmax(0, 1fr); gap: 0.5rem; padding: 0.6rem 0; border-bottom: 1px solid var(--pf-rule-soft); }
.pf-shape-rules li::before { content: counter(rule, decimal-leading-zero); font-family: var(--pf-mono); color: var(--pf-accent); font-size: 0.8rem; padding-top: 0.2rem; }
.pf-shape-rules strong { font-weight: 600; }
.pf-toc { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.25rem; }
.pf-toc a, .pf-toc a:link, .pf-toc a:visited {
    font-family: var(--pf-mono); font-size: 0.74rem; letter-spacing: 0.04em; padding: 0.35rem 0.75rem; border-radius: 999px;
    border: 1px solid var(--pf-rule); color: var(--pf-quiet); text-decoration: none;
}
.pf-toc a:hover { border-color: var(--pf-accent); color: var(--pf-accent); }

@media (max-width: 720px) {
    .pf-prompt-head { flex-direction: column; align-items: flex-start; }
}