/* "Getting to Know You" gallery — styles.
   Warm, classroom-friendly, but restrained typography so the colorful
   worksheets are the visual focus. */

:root {
  --ink: #1f2937;
  --ink-soft: #4b5563;
  --paper: #fbf7f0;
  --card: #ffffff;
  --line: #e7ddcd;
  --brand: #0b5fa5;      /* TCEA-ish blue */
  --brand-dark: #073b66;
  --accent: #e8641c;     /* warm orange from the worksheets (fills/borders) */
  --accent-ink: #a3400a; /* darker orange for TEXT — meets WCAG AA on light bg */
  --accent-soft: #fde8d8;
  --focus: #ffb020;
  --radius: 16px;
  --shadow: 0 10px 30px rgba(17, 40, 70, 0.10);
  --shadow-sm: 0 3px 10px rgba(17, 40, 70, 0.08);
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
img { max-width: 100%; display: block; }
a { color: var(--brand); }

/* --- Language bar --- */
.langbar {
  position: fixed; z-index: 40; top: 12px; right: clamp(12px, 3vw, 34px);
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  border-radius: 999px;
  background: rgba(11, 59, 102, 0.9);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  color: #fff;
}
.langbar .globe { font-size: 1.05rem; }
.langbar .lang-label { font-size: .78rem; font-weight: 700; letter-spacing: .02em; opacity: .9; }
.breakout-i18n-switcher {
  border: 0; border-radius: 999px; padding: 7px 12px;
  background: #fff; color: var(--brand-dark);
  font-weight: 800; font-size: .92rem; cursor: pointer;
}
.breakout-i18n-switcher:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* --- Header --- */
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.hero {
  background:
    radial-gradient(1100px 300px at 85% -20%, rgba(232, 100, 28, 0.10), transparent 60%),
    linear-gradient(180deg, #eaf2fb 0%, var(--paper) 100%);
  padding: clamp(1rem, 3vw, 2rem) 1.25rem clamp(1.2rem, 3vw, 2rem);
}
.hero-inner { max-width: var(--maxw); margin: 0 auto; }
.hero-banner {
  width: 100%; max-width: 1120px; margin: 0 auto; height: auto;
  border-radius: 18px; box-shadow: var(--shadow); border: 1px solid var(--line);
}
.hero-nav { margin: 1.2rem auto 0; display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; }
.hero-nav a {
  color: var(--brand-dark); text-decoration: none; font-weight: 800;
  padding: .6rem 1.2rem; border-radius: 999px;
  border: 1.5px solid var(--brand); background: #fff;
}
.hero-nav a.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.hero-nav a.primary:hover { background: var(--brand-dark); }
.hero-nav a:hover { transform: translateY(-1px); }
.hero-nav a:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

/* --- Sub-page header (research.html) --- */
.subhero {
  background:
    radial-gradient(1100px 300px at 85% -20%, rgba(232, 100, 28, 0.10), transparent 60%),
    linear-gradient(180deg, #eaf2fb 0%, var(--paper) 100%);
  padding: clamp(1.4rem, 4vw, 2.6rem) 1.25rem clamp(1rem, 3vw, 1.6rem);
}
.subhero-inner { max-width: var(--maxw); margin: 0 auto; }
.back-link {
  display: inline-block; margin-bottom: .8rem; font-weight: 800; text-decoration: none;
  color: var(--brand-dark); padding: .4rem .9rem; border-radius: 999px;
  border: 1.5px solid var(--brand); background: #fff;
}
.back-link:hover { transform: translateY(-1px); }
.back-link:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.subhero h1 {
  margin: 0; color: var(--brand-dark); letter-spacing: -0.01em;
  font-size: clamp(1.5rem, 3.6vw, 2.4rem); line-height: 1.1; max-width: 24ch;
}
.research-hero {
  width: 100%; max-width: 1120px; height: auto; margin: .3rem 0 1.2rem;
  border-radius: 16px; box-shadow: var(--shadow); border: 1px solid var(--line);
}
.back-cta { display: flex; gap: .6rem; flex-wrap: wrap; justify-content: center; }

/* --- Notice / disclaimer --- */
.notice {
  background: var(--accent-soft); border: 1px solid #f3c9a9; border-radius: var(--radius);
  padding: 1rem 1.2rem; margin-bottom: 1.4rem;
}
.notice p { margin: .3rem 0; max-width: none; }
.notice .notice-sub { font-size: .88rem; color: var(--ink-soft); }

/* --- TEKS correlation --- */
.teks-subject {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm); padding: clamp(1.1rem, 3vw, 1.8rem); margin-bottom: 1.4rem;
}
.teks-subject h2 { margin: 0 0 .3rem; color: var(--brand-dark); font-size: 1.3rem; }
.teks-subject .lbl { font-weight: 800; color: var(--ink-soft); font-size: .82rem; text-transform: uppercase; letter-spacing: .04em; }
.teks-chapter { margin: .2rem 0 .7rem; font-size: .92rem; }
.teks-strands { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; margin: .4rem 0 .8rem; }
.teks-strands .chip {
  font-size: .8rem; font-weight: 700; color: var(--brand-dark);
  background: #eef4fb; border: 1px solid #d6e4f2; border-radius: 999px; padding: .25rem .6rem;
}
.teks-align { margin: .3rem 0 1rem; color: var(--ink); font-size: .95rem; }
.teks-align .lbl { display: inline; }
.teks-table { width: 100%; border-collapse: collapse; font-size: .93rem; }
.teks-table th {
  text-align: left; padding: .5rem .6rem; border-bottom: 2px solid var(--accent-soft);
  color: var(--ink-soft); font-size: .78rem; text-transform: uppercase; letter-spacing: .04em;
}
.teks-table td { padding: .6rem; border-bottom: 1px solid var(--line); vertical-align: top; }
.teks-table tr:last-child td { border-bottom: 0; }
.teks-grade { white-space: nowrap; width: 1%; }
.teks-grade .band-tag { font-size: .74rem; font-weight: 700; color: var(--accent-ink); }

/* Call-to-action links between the two pages */
.research-cta { margin: 2.4rem 0 0; text-align: center; }
.research-cta a, .back-cta a {
  display: inline-block; font-weight: 800; text-decoration: none;
  color: #fff; background: var(--brand); border: 1.5px solid var(--brand);
  padding: .7rem 1.3rem; border-radius: 999px;
}
.research-cta a:hover, .back-cta a:hover { background: var(--brand-dark); transform: translateY(-1px); }
.research-cta a:focus-visible, .back-cta a:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.back-cta { margin-top: 2.2rem; }

/* --- Layout --- */
main { max-width: var(--maxw); margin: 0 auto; padding: clamp(1.5rem, 4vw, 2.8rem) 1.25rem 4rem; }
section { scroll-margin-top: 80px; }
.section-title { font-size: clamp(1.4rem, 3vw, 2rem); margin: 0 0 .3rem; color: var(--brand-dark); }

/* --- Filters --- */
.filters {
  position: sticky; top: 0; z-index: 20;
  display: flex; flex-wrap: wrap; align-items: end; gap: 1rem;
  padding: 1rem 1.1rem; margin-bottom: 1.4rem;
  background: rgba(251, 247, 240, 0.92);
  backdrop-filter: blur(6px);
  border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.filters .field { display: flex; flex-direction: column; gap: .3rem; }
.filters label { font-size: .76rem; font-weight: 800; text-transform: uppercase; letter-spacing: .05em; color: var(--ink-soft); }
.filters select {
  border: 1.5px solid var(--line); border-radius: 10px; padding: .5rem .7rem;
  font-size: .95rem; font-weight: 600; color: var(--ink); background: #fff; min-width: 12ch; cursor: pointer;
}
.filters select:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
.filters .spacer { flex: 1; }
.filters .count { font-weight: 800; color: var(--brand-dark); align-self: center; }
#filter-reset {
  border: 1.5px solid var(--line); background: #fff; color: var(--ink-soft);
  padding: .5rem .9rem; border-radius: 10px; font-weight: 700; cursor: pointer;
}
#filter-reset:hover { border-color: var(--accent); color: var(--accent); }

.gallery-note { color: var(--ink-soft); font-size: .92rem; margin: 0 0 1.2rem; }

/* --- Gallery --- */
.group-head {
  font-size: 1.05rem; color: var(--brand-dark); margin: 1.6rem 0 .7rem;
  padding-bottom: .35rem; border-bottom: 2px solid var(--accent-soft);
}
.row {
  display: grid; gap: 1.1rem; margin-bottom: .4rem;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
}
.card {
  margin: 0; background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-sm);
  transition: transform .12s ease, box-shadow .12s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.card .thumb {
  display: block; width: 100%; padding: 0; border: 0; background: #f3ede2; cursor: zoom-in;
}
.card .thumb img { width: 100%; height: auto; display: block; } /* full sheet, never cropped */
.card .thumb:focus-visible { outline: 3px solid var(--focus); outline-offset: -3px; }
.card figcaption {
  display: flex; flex-direction: column; align-items: flex-start; gap: .45rem;
  padding: .6rem .75rem;
}
.card-grade { font-weight: 800; font-size: .92rem; color: var(--ink); }
.card-variant {
  font-size: .68rem; font-weight: 800; vertical-align: middle;
  padding: .05rem .35rem; border-radius: 999px;
  background: var(--accent-soft); color: var(--accent-ink); text-transform: uppercase;
}
.card-dls { display: flex; flex-wrap: wrap; gap: .4rem; }
.card-dl {
  font-size: .78rem; font-weight: 800; text-decoration: none; white-space: nowrap;
  padding: .2rem .5rem; border-radius: 999px; border: 1.5px solid var(--line); color: var(--brand);
}
.card-dl:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.card-dl:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
.empty {
  padding: 2.5rem 1rem; text-align: center; color: var(--ink-soft);
  border: 2px dashed var(--line); border-radius: var(--radius); background: #fff;
}

/* --- Research / About --- */
.research {
  margin-top: 3.5rem; padding: clamp(1.4rem, 4vw, 2.6rem);
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.research h2 { color: var(--brand-dark); margin-top: 0; }
.research h3 { color: var(--accent-ink); margin: 1.8rem 0 .4rem; font-size: 1.15rem; }
.research p { max-width: 74ch; color: var(--ink); }
.research ul { max-width: 74ch; padding-left: 1.2rem; }
.research li { margin: .5rem 0; }
.research .sources-note { font-size: .9rem; color: var(--ink-soft); font-style: italic; }
.sources { font-size: .9rem; color: var(--ink-soft); }
.sources li { margin: .55rem 0; line-height: 1.4; }

/* --- Footer --- */
footer {
  border-top: 1px solid var(--line); background: #fff;
  padding: 1.6rem 1.25rem; text-align: center; color: var(--ink-soft); font-size: .88rem;
}
footer .built { margin: 0 0 .35rem; font-weight: 700; color: var(--ink); }

/* --- Lightbox --- */
#lightbox {
  position: fixed; inset: 0; z-index: 60; display: none;
  align-items: center; justify-content: center; padding: 2vh 2vw;
  background: rgba(7, 27, 45, 0.86);
}
#lightbox.open { display: flex; }
#lightbox img { max-width: min(92vw, 900px); max-height: 88vh; width: auto; border-radius: 8px; box-shadow: 0 20px 60px rgba(0,0,0,.5); }
.lightbox-bar {
  position: absolute; top: 14px; right: 16px; display: flex; gap: .6rem;
}
.lightbox-bar a, .lightbox-bar button {
  border: 0; border-radius: 999px; padding: .55rem 1rem; font-weight: 800; cursor: pointer;
  font-size: .9rem; text-decoration: none;
}
#lightbox-dl-png { background: var(--accent); color: #fff; }
#lightbox-dl-pdf { background: var(--brand); color: #fff; }
#lightbox-close { background: #fff; color: var(--ink); }
.lightbox-bar a:focus-visible, .lightbox-bar button:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }

@media (max-width: 560px) {
  .row { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .filters { position: static; }
}
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
  html { scroll-behavior: auto; }
}