/* ==========================================================================
   Thistle & Moth — site stylesheet
   Fonts: EB Garamond (headings), Source Serif 4 (body), Inter (UI chrome)
   Palette: emerald banner / cobalt accent / parchment & ink / gold & thistle
   ornaments — see the "Thistle & Moth — Visual Identity" reference for the
   full rationale behind these choices.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Font loading
   Self-hosted is preferable to a Google Fonts CDN call for both
   privacy and reliability. Drop the .woff2 files in /assets/fonts/
   and adjust paths below. If you'd rather use Google Fonts directly,
   swap this block for @import statements or a <link> in your head
   partial instead — either works, just don't do both.
   -------------------------------------------------------------------------- */

@font-face {
  font-family: "EB Garamond";
  src: url("/fonts/EBGaramond-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "EB Garamond";
  src: url("/fonts/EBGaramond-Medium.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Serif 4";
  src: url("/fonts/SourceSerif4-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Source Serif 4";
  src: url("/fonts/SourceSerif4-Italic.woff2") format("woff2");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("/fonts/Inter-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* --------------------------------------------------------------------------
   2. Design tokens

   Light mode: an open page in daylight — parchment ground, ink text.
   Dark mode (below, @media prefers-color-scheme): the same page read by
   lamplight — a deep emerald-black ground holding the parchment content
   surface, rather than a naive color inversion.
   -------------------------------------------------------------------------- */

:root {
  /* Color — light (default) */
  --color-bg: #f6f0df;           /* parchment page ground */
  --color-bg-raised: #fbf7ec;    /* cards, code blocks, pull-quote background */
  --color-ink: #241c14;          /* body text — warm, not flat black */
  --color-ink-heading: #1a140d;  /* headings, strongest contrast */
  --color-ink-soft: #4a3f30;     /* metadata, dividers, quiet secondary text */
  --color-border: #d8c9a3;

  --color-accent: #1d4f91;       /* cobalt — links, rules, emphasis */
  --color-accent-hover: #163b70;
  --color-gold: #a9812e;         /* ornament — drop caps, sparingly */
  --color-thistle: #6e5a87;      /* ornament — tags, quiet secondary accent */
  --color-thistle-bg: #e7e0ee;

  --color-banner-bg: #0b6e4f;    /* emerald banner ground */
  --color-banner-bg-deep: #084c37;
  --color-banner-text: #f2ecdc;  /* warm ivory — not stark white */

  /* Type */
  --font-body: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-heading: "EB Garamond", "Palatino Linotype", Georgia, serif;
  --font-ui: "Inter", "IBM Plex Sans", -apple-system, sans-serif;

  --font-size-base: 19px;
  --line-height-base: 1.65;
  --measure: 70ch; /* max line length for body text */

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.75rem;
  --space-4: 3rem;
  --space-5: 5rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12201a;
    --color-bg-raised: #efe6cd;
    --color-ink: #2a2013;
    --color-ink-heading: #1c150c;
    --color-ink-soft: #52432c;
    --color-border: #cabb92;

    --color-accent: #5b83c9;
    --color-accent-hover: #7b9dd6;
    --color-gold: #c9a227;
    --color-thistle: #9c8ab9;
    --color-thistle-bg: #2a2436;

    --color-banner-bg: #0a5a41;
    --color-banner-bg-deep: #073f2d;
    --color-banner-text: #f5efdd;
  }
}

/* --------------------------------------------------------------------------
   3. Base
   -------------------------------------------------------------------------- */

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

html {
  font-size: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

/* Main content column */
main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: var(--space-4) var(--space-2);
}

/* --------------------------------------------------------------------------
   4. Headings
   -------------------------------------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-ink-heading);
  font-weight: 600;
  line-height: 1.25;
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

h1 {
  font-size: 2.6rem;
  margin-top: 0;
}

h2 {
  font-size: 2rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--space-1);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.2rem;
  font-style: italic;
  font-weight: 400;
}

/* --------------------------------------------------------------------------
   5. Body text elements
   -------------------------------------------------------------------------- */

p {
  margin: 0 0 var(--space-2) 0;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

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

/* Visible focus state — important for keyboard/screen-reader navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

strong {
  color: var(--color-ink-heading);
}

em, i {
  font-style: italic;
}

blockquote {
  margin: var(--space-3) 0;
  padding: var(--space-2) var(--space-3);
  border-left: 3px solid var(--color-accent);
  background-color: var(--color-bg-raised);
  font-style: italic;
}

blockquote p:last-child {
  margin-bottom: 0;
}

hr {
  border: none;
  border-top: 1px solid var(--color-gold);
  width: 4rem;
  margin: var(--space-4) auto;
}

/* --------------------------------------------------------------------------
   6. Lists
   -------------------------------------------------------------------------- */

ul, ol {
  padding-left: 1.4em;
  margin: 0 0 var(--space-2) 0;
}

li {
  margin-bottom: 0.4em;
}

/* --------------------------------------------------------------------------
   7. Code / pre
   Kept legible rather than decorative — likely to appear rarely on this
   site, but essays quoting Latin, TSV data, or Canon law citations
   sometimes want a monospace treatment.
   -------------------------------------------------------------------------- */

code, pre {
  font-family: "Courier New", monospace;
  font-size: 0.9em;
}

code {
  background-color: var(--color-bg-raised);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

pre {
  background-color: var(--color-bg-raised);
  padding: var(--space-2);
  overflow-x: auto;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* --------------------------------------------------------------------------
   8. UI chrome — nav, metadata, tags
   Sans-serif reserved for these elements only. Never used for body prose.
   -------------------------------------------------------------------------- */

.site-header,
.site-footer,
nav,
.meta,
.tags {
  font-family: var(--font-ui);
}

/* The masthead — the "banner" in the visual identity reference: emerald
   ground, ivory text, in both color modes (it deliberately does not follow
   the page's light/dark swap the way body content does — see --color-banner-*
   above, which stay emerald/ivory and only deepen slightly for dark mode). */
.site-header {
  background: linear-gradient(180deg, var(--color-banner-bg) 0%, var(--color-banner-bg-deep) 100%);
  padding: var(--space-3) var(--space-2);
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-3);
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1.9rem;
  font-weight: 600;
  color: var(--color-banner-text);
  text-decoration: none;
}

nav a {
  text-decoration: none;
  color: var(--color-banner-text);
  opacity: 0.88;
  margin-right: var(--space-2);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

nav a:hover {
  opacity: 1;
}

.meta {
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.tags {
  color: var(--color-thistle);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3) var(--space-2);
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  text-align: center;
}

/* --------------------------------------------------------------------------
   9. Skip link
   Off-screen until focused — the same pattern needed for any keyboard/
   screen-reader user to bypass the header nav straight to <main>.
   -------------------------------------------------------------------------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background-color: var(--color-banner-bg);
  color: var(--color-banner-text);
  font-family: var(--font-ui);
  padding: var(--space-1) var(--space-2);
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  left: 0;
}

/* --------------------------------------------------------------------------
   10. Buttons, form fields, and the reader-magnet enrollment funnel
   (layouts/partials/course-enroll-form.html, layouts/courses/single.html)
   -------------------------------------------------------------------------- */

.btn {
  display: inline-block;
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--color-banner-text);
  background-color: var(--color-accent);
  border: none;
  border-radius: 4px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
}

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

label {
  display: block;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

input[type="email"],
input[type="text"],
textarea {
  width: 100%;
  font-family: var(--font-ui);
  font-size: 1rem;
  color: var(--color-ink);
  background-color: var(--color-bg-raised);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 0.65rem 0.75rem;
  margin-bottom: var(--space-2);
}

/* Honeypot: must stay genuinely hidden from sighted users (not just
   visually de-emphasized), or a real visitor filling it in silently kills
   their own signup — see course-enroll-form.html's `if (form.website.value)
   return;` check. */
.field-honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.course-hero {
  text-align: center;
}

.course-cover {
  max-width: 14rem;
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  margin: 0 auto var(--space-3);
}

.course-subhead {
  font-style: italic;
  color: var(--color-ink-soft);
  margin-top: 0;
}

.course-social-proof {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--color-ink-soft);
}

.enroll-form {
  max-width: 24rem;
  margin: var(--space-3) auto;
  text-align: left;
}

.enroll-status {
  text-align: center;
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

.enroll-download {
  text-align: center;
  margin-top: var(--space-2);
}

.course-repeat-cta {
  text-align: center;
  margin-top: var(--space-5);
}

/* --------------------------------------------------------------------------
   11. Post/article-specific
   -------------------------------------------------------------------------- */

.post-title {
  margin-bottom: var(--space-1);
}

.post-meta {
  margin-bottom: var(--space-4);
}

.post-content h2:first-of-type {
  margin-top: var(--space-3);
}

/* Drop cap for opening paragraph — optional, purely decorative flourish;
   delete this rule if it doesn't earn its keep in practice */
.post-content > p:first-of-type::first-letter {
  font-family: var(--font-heading);
  font-size: 3.2em;
  float: left;
  line-height: 0.8;
  padding-right: 0.08em;
  padding-top: 0.05em;
  color: var(--color-gold);
}

/* --------------------------------------------------------------------------
   12. Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 640px) {
  :root {
    --font-size-base: 17px;
  }

  h1 {
    font-size: 2.1rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  main {
    padding: var(--space-3) var(--space-2);
  }
}

/* --------------------------------------------------------------------------
   13. Print
   -------------------------------------------------------------------------- */

@media print {
  body {
    background: #fff;
    color: #000;
  }

  nav, .site-footer {
    display: none;
  }
}