/*
Theme Name: SIS
Theme URI: https://www.schoolinfosystem.org
Author: School Information System
Description: A text-first, single-column reading theme for schoolinfosystem.org. Built for readability across mobile, laptop, and desktop, with an elegant, unobtrusive header and a clear visual distinction between post titles and body text.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.8
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: LICENSE
Text Domain: sis
*/

/* ==========================================================================
   1. DESIGN TOKENS
   ========================================================================== */
:root {
  /* Color */
  --color-bg:          #ffffff;
  --color-text:         #1c1c1c;
  --color-text-muted:   #6b6b6b;
  --color-link:         #1a56ad;
  --color-link-hover:   #123f85;
  --color-rule:         #e7e5e0;
  --color-card-bg:      #f3f4f6;
  --color-card-border:  #dfe1e5;
  --color-focus:        #1a56ad;

  /* Type */
  --font-serif: Charter, "Iowan Old Style", Georgia, Cambria, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Code", "Roboto Mono", Menlo, Consolas, monospace;

  /* Layout */
  --measure: 700px;
  --gutter: 20px;
}

/* ==========================================================================
   2. RESET / BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; }

a {
  color: var(--color-link);
  text-decoration: none;
  text-underline-offset: 0.15em;
}
a:hover { color: var(--color-link-hover); text-decoration: underline; }
a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ==========================================================================
   3. LAYOUT SHELL
   ========================================================================== */
.sis-wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ==========================================================================
   4. HEADER  (elegant, unobtrusive)
   ========================================================================== */
.sis-header {
  border-bottom: 1px solid var(--color-rule);
  padding: 28px 0 14px;
}

.sis-header__brand {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: 0.2px;
  margin-bottom: 14px;
}
.sis-header__brand:hover { color: var(--color-text); text-decoration: none; }

.sis-header__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
}

.sis-header__rss {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--color-text-muted);
  font-weight: 600;
}
.sis-header__rss svg { width: 14px; height: 14px; flex-shrink: 0; }
.sis-header__rss:hover { color: var(--color-link); }
.sis-header__rss:hover svg { color: var(--color-link); }

.sis-header__links {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  margin-left: auto;
}
.sis-header__links a { font-weight: 600; }
.sis-header__links .sep { color: var(--color-rule); }

/* Search form in header */
.sis-search {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--color-card-border);
  border-radius: 6px;
  overflow: hidden;
  height: 34px;
}
.sis-search__input {
  flex: 1 1 auto;
  min-width: 120px;
  border: 0;
  padding: 0 10px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--color-text);
  background: var(--color-bg);
}
.sis-search__input:focus { outline: none; }
.sis-search__submit {
  border: 0;
  border-left: 1px solid var(--color-card-border);
  background: var(--color-card-bg);
  color: var(--color-text-muted);
  padding: 0 12px;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
}
.sis-search__submit:hover { background: var(--color-card-border); color: var(--color-text); }

/* ==========================================================================
   5. POST LIST (index / search results)
   ========================================================================== */
.sis-post {
  padding: 34px 0;
  border-bottom: 1px solid var(--color-rule);
}
.sis-post:first-of-type { padding-top: 30px; }
.sis-post:last-of-type { border-bottom: none; }

/* Title styling — deliberately distinct from body copy: serif vs sans,
   larger scale, bolder weight, tighter line-height. */
.sis-post__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.6rem;
  line-height: 1.28;
  letter-spacing: 0.1px;
  margin: 0 0 8px;
}
.sis-post__title a { color: var(--color-text); }
.sis-post__title a:hover { color: var(--color-link); text-decoration: none; }

.sis-post__byline {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 16px;
}
.sis-post__byline a { font-weight: 600; }

.sis-post__excerpt,
.sis-post__content {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--color-text);
}
.sis-post__excerpt p,
.sis-post__content p { margin: 0 0 1.2em; }

.sis-post__excerpt blockquote,
.sis-post__content blockquote {
  margin: 1.4em 0;
  padding: 4px 0 4px 18px;
  border-left: 3px solid var(--color-rule);
  color: var(--color-text-muted);
  font-style: italic;
}

.sis-post__excerpt img,
.sis-post__content img {
  display: block;
  margin: 1.4em auto;
  border-radius: 4px;
}

.sis-post__content h2,
.sis-post__content h3 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
  margin: 1.6em 0 0.5em;
}
.sis-post__content h2 { font-size: 1.25rem; }
.sis-post__content h3 { font-size: 1.1rem; }

.sis-post__content ul,
.sis-post__content ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.sis-post__content li { margin-bottom: 0.4em; }

.sis-post__content hr {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: 1.8em 0;
}

/* Single-post title reads larger than list titles */
.sis-single .sis-post__title {
  font-size: clamp(1.75rem, 4.5vw, 2.25rem);
}

/* ==========================================================================
   6. SHARE ROW  (icons properly aligned on a baseline, not bare URLs)
   ========================================================================== */
.sis-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}
.sis-share__label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}
.sis-share a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--color-card-border);
  color: var(--color-text-muted);
}
.sis-share a:hover {
  color: var(--color-link);
  border-color: var(--color-link);
  text-decoration: none;
}
.sis-share svg { width: 15px; height: 15px; }

/* ==========================================================================
   7. FAST LANE LITERACY (single-post-only footer widget)
   Reproduces the sedso word-of-the-moment embed: a labeled divider, then
   one centered word (image + "dive into" link). Optima is the original
   brand's intended face; because it's macOS/iOS-only, it falls back to
   comparable humanist sans fonts elsewhere rather than to the page's
   default body font, so the widget keeps its own distinct voice on every
   platform.
   ========================================================================== */
.sis-fll {
  margin-top: 44px;
  padding-top: 8px;
  --fll-font: Optima, Candara, "Noto Sans", "Segoe UI", var(--font-sans);
}

.sis-fll__divider {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 10px;
}
.sis-fll__rule {
  flex: 1 1 auto;
  height: 1px;
  background-color: var(--color-text);
}
.sis-fll__brand {
  flex: 0 0 auto;
  font-family: var(--fll-font);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.3;
  color: #333333;
  letter-spacing: 0;
  text-align: center;
  white-space: nowrap;
  margin: 0;
}
.sis-fll__brand a { color: #333333; text-decoration: underline; }
.sis-fll__brand a:hover { color: var(--color-link); }

.sis-fll__word {
  margin-top: 18px;
  text-align: center;
}
.sis-fll__word img {
  display: block;
  width: 90%;
  max-width: 420px;
  height: auto;
  margin: 0 auto;
  border-radius: 4px;
}
.sis-fll__caption {
  font-family: var(--fll-font);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.3;
  color: #333333;
  letter-spacing: 0;
  text-align: center;
  margin: 12px 0 0;
}
.sis-fll__caption a { font-weight: 600; }

/* ==========================================================================
   8. SITE FOOTER  (QR code + link back, present on every page)
   ========================================================================== */
.sis-footer {
  margin-top: 48px;
  padding: 32px 0 40px;
  border-top: 1px solid var(--color-rule);
  text-align: center;
}
.sis-footer__qr {
  display: block;
  width: 96px;
  height: 96px;
  margin: 0 auto 10px;
  border-radius: 4px;
}
.sis-footer__link {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
}

/* ==========================================================================
   9. SEARCH RESULTS HEADING
   ========================================================================== */
.sis-search-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin: 28px 0 6px;
}
.sis-search-title .sis-search-term { font-style: italic; }
.sis-search-count {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin: 0 0 8px;
}
.sis-no-results {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  padding: 20px 0 40px;
}

/* ==========================================================================
   10. RESPONSIVE
   ========================================================================== */
@media (max-width: 480px) {
  body { font-size: 16px; }
  .sis-header__brand { font-size: 1.3rem; }
  .sis-post__title { font-size: 1.35rem; }
  .sis-single .sis-post__title { font-size: 1.65rem; }
  .sis-header__links { margin-left: 0; width: 100%; order: 3; }
  .sis-fll__grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}

@media (min-width: 900px) {
  :root { --gutter: 0px; }
  .sis-wrap { padding: 0; }
}