/* ==========================================================================
   ems.mathsschools.co.uk — design system
   Palette and triangle motif drawn from EMS's own branding (prospectus,
   student/parent packs): warm orange primary, with the red/blue/teal
   accent triangles from their "mountain" logo mark reused as a genuine
   decorative motif rather than an invented one.
   ========================================================================== */

:root {
  --ink: #241c14;
  --ink-soft: #4a4038;
  --muted: #7d7268;
  --paper: #fdf9f2;
  --surface: #ffffff;
  --surface-2: #f6efe2;
  --border: #e8ddc8;
  --accent: #dd8c2e;
  --accent-dark: #a8621b;
  --accent-tint: #fbe8cc;
  --tri-red: #c0435a;
  --tri-blue: #8b93c4;
  --tri-teal: #5fb8bd;
  --font-serif: Georgia, "Iowan Old Style", "Palatino Linotype", Palatino, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container: 1080px;
  --radius: 12px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f3ece0;
    --ink-soft: #d8cbb8;
    --muted: #a4988a;
    --paper: #1c1610;
    --surface: #241d15;
    --surface-2: #2c2318;
    --border: #3d3222;
    --accent: #efa64a;
    --accent-dark: #f6c581;
    --accent-tint: #3a2a15;
  }
}
:root[data-theme="dark"] {
  --ink: #f3ece0; --ink-soft: #d8cbb8; --muted: #a4988a; --paper: #1c1610; --surface: #241d15;
  --surface-2: #2c2318; --border: #3d3222; --accent: #efa64a; --accent-dark: #f6c581; --accent-tint: #3a2a15;
}
:root[data-theme="light"] {
  --ink: #241c14; --ink-soft: #4a4038; --muted: #7d7268; --paper: #fdf9f2; --surface: #ffffff;
  --surface-2: #f6efe2; --border: #e8ddc8; --accent: #dd8c2e; --accent-dark: #a8621b; --accent-tint: #fbe8cc;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; line-height: 1.15; color: var(--ink); }
h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); margin: 0 0 0.4em; }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); margin: 1.6em 0 0.6em; }
h3 { font-size: 1.2rem; margin: 1.2em 0 0.4em; }
h4 { font-size: 1.02rem; margin: 0 0 0.3em; }
p { margin: 0 0 1em; }
a { color: var(--accent-dark); }
a:hover { text-decoration-thickness: 2px; }
.mt-0 { margin-top: 0; }
.text-muted { color: var(--muted); }
.text-center { text-align: center; }
img, svg { max-width: 100%; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 3.2em 0; }
.section--alt { background: var(--surface-2); }

.skip-link { position: absolute; left: -999px; top: 0; background: var(--accent); color: #1a1206; padding: 10px 16px; z-index: 100; }
.skip-link:focus { left: 12px; top: 12px; }

/* ---- Header --------------------------------------------------------- */
.site-header { border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; z-index: 20; }
.site-header__bar { display: flex; align-items: center; gap: 24px; padding: 14px 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-serif); font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.brand__tri { flex: none; }
.nav { display: flex; gap: 22px; margin-left: auto; flex-wrap: wrap; }
.nav a { color: var(--ink-soft); text-decoration: none; font-size: 0.95rem; font-weight: 600; padding: 4px 0; border-bottom: 2px solid transparent; }
.nav a:hover, .nav a.is-active { color: var(--accent-dark); border-bottom-color: var(--accent); }
.nav-toggle { display: none; }
@media (max-width: 760px) {
  .nav { display: none; }
  .nav-toggle { display: block; }
}

/* ---- Hero / triangle motif -------------------------------------------- */
.hero { padding: 4em 0 2.5em; position: relative; }
.hero__kicker { display: inline-block; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent-dark); background: var(--accent-tint); padding: 5px 12px; border-radius: 20px; margin-bottom: 1em; }
.hero__lede { font-size: 1.15rem; color: var(--ink-soft); max-width: 640px; }
.tri-row { display: flex; align-items: flex-end; gap: 0; margin: 2.2em 0 0; height: 46px; opacity: 0.9; }
.tri-row svg { display: block; }

.btn { display: inline-block; padding: 12px 22px; border-radius: 8px; font-weight: 700; text-decoration: none; font-size: 0.95rem; border: 2px solid transparent; }
.btn--primary { background: var(--accent); color: #241505; }
.btn--primary:hover { background: var(--accent-dark); color: #fff; }
.btn--outline { border-color: var(--accent); color: var(--accent-dark); }
.btn--outline:hover { background: var(--accent-tint); }
.cluster { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }

/* ---- Stat strip ------------------------------------------------------- */
.stat-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 20px; margin-top: 2.2em; padding-top: 2em; border-top: 1px solid var(--border); }
.stat__value { font-family: var(--font-serif); font-size: 2rem; font-weight: 700; color: var(--accent-dark); }
.stat__label { font-size: 0.85rem; color: var(--muted); margin-top: 2px; }

/* ---- Cards -------------------------------------------------------------- */
.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; } }

.card { display: block; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; text-decoration: none; color: inherit; transition: transform 0.15s ease, box-shadow 0.15s ease; }
a.card:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(64, 40, 10, 0.1); border-color: var(--accent); }
.card h3 { margin-top: 0; }
.card p { color: var(--ink-soft); font-size: 0.94rem; margin-bottom: 0; }
.card__eyebrow { font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--accent-dark); margin-bottom: 6px; display: block; }

/* ---- Callouts ----------------------------------------------------------- */
.callout { background: var(--surface); border: 1px solid var(--border); border-left: 5px solid var(--accent); border-radius: 10px; padding: 20px 22px; margin: 1.6em 0; }
.callout--gold { border-left-color: var(--tri-red); background: color-mix(in srgb, var(--tri-red) 6%, var(--surface)); }
.callout--teal { border-left-color: var(--tri-teal); background: color-mix(in srgb, var(--tri-teal) 8%, var(--surface)); }
.callout__title { font-weight: 700; margin-bottom: 6px; color: var(--ink); }
.callout p:last-child { margin-bottom: 0; }

/* ---- Key facts / tables -------------------------------------------------- */
.key-facts { display: grid; grid-template-columns: max-content 1fr; gap: 10px 20px; margin: 1.2em 0; }
.key-facts dt { font-weight: 700; color: var(--ink-soft); white-space: nowrap; }
.key-facts dd { margin: 0; }

.table-wrap { overflow-x: auto; margin: 1.4em 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); }
th { font-family: var(--font-serif); background: var(--surface-2); font-weight: 700; }
tr:hover td { background: var(--surface-2); }

/* ---- Timeline ------------------------------------------------------------ */
.timeline { list-style: none; margin: 1.6em 0; padding: 0 0 0 22px; border-left: 2px solid var(--border); }
.timeline li { position: relative; padding-bottom: 1.8em; }
.timeline li::before { content: ""; position: absolute; left: -27px; top: 5px; width: 11px; height: 11px; border-radius: 50%; background: var(--accent); border: 2px solid var(--paper); }
.timeline .t-date { display: block; font-weight: 700; color: var(--accent-dark); font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; margin-bottom: 4px; }

/* ---- Staff / people cards -------------------------------------------------- */
.people-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 700px) { .people-grid { grid-template-columns: 1fr; } }
.person-card { display: flex; gap: 14px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 18px; }
.person-avatar { flex: none; width: 44px; height: 44px; border-radius: 50%; background: var(--accent-tint); color: var(--accent-dark); display: flex; align-items: center; justify-content: center; font-family: var(--font-serif); font-weight: 700; }
.person-role { font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; color: var(--accent-dark); display: block; margin-bottom: 6px; }
.person-card p { font-size: 0.9rem; color: var(--ink-soft); margin-bottom: 0; }

/* ---- Puzzle box ------------------------------------------------------------ */
.puzzle-box { background: var(--ink); color: var(--paper); border-radius: var(--radius); padding: 28px 30px; margin: 1.8em 0; }
.puzzle-box h3 { color: var(--accent); margin-top: 0; }
.puzzle-box p { color: #e9ddc9; }

/* ---- Breadcrumbs / prose ---------------------------------------------------- */
.breadcrumbs { padding: 16px 0 0; font-size: 0.85rem; color: var(--muted); }
.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--accent-dark); }
.breadcrumbs .sep { margin: 0 8px; }
.prose { max-width: 720px; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: 0.4em; }
blockquote.pull { border-left: 4px solid var(--accent); margin: 1.8em 0; padding: 0.2em 0 0.2em 1.2em; font-family: var(--font-serif); font-size: 1.15rem; font-style: italic; color: var(--ink-soft); }
blockquote.pull cite { display: block; margin-top: 0.5em; font-size: 0.85rem; font-style: normal; color: var(--muted); }

.pill-list { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; margin: 0.8em 0; }
.pill-list a, .pill-list span { display: inline-block; padding: 7px 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 20px; font-size: 0.86rem; text-decoration: none; color: var(--ink-soft); }
.pill-list a:hover { border-color: var(--accent); color: var(--accent-dark); }

.tag { display: inline-block; font-size: 0.72rem; font-weight: 700; letter-spacing: 0.03em; text-transform: uppercase; padding: 4px 9px; border-radius: 20px; background: var(--surface-2); color: var(--ink-soft); }

.source-list { list-style: none; padding: 0; font-size: 0.9rem; }
.source-list li { display: flex; gap: 8px; padding: 6px 0; border-bottom: 1px solid var(--border); }
.src-n { color: var(--muted); flex: none; }

/* ---- Footer ---------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--border); background: var(--surface-2); padding: 3em 0 1.6em; margin-top: 3em; }
.site-footer h4 { font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); margin-bottom: 0.8em; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: var(--ink-soft); text-decoration: none; font-size: 0.92rem; }
.site-footer a:hover { color: var(--accent-dark); }
.site-footer .grid { grid-template-columns: 1.4fr repeat(3, 1fr); }
@media (max-width: 760px) { .site-footer .grid { grid-template-columns: repeat(2, 1fr); } }
.foot-note { font-size: 0.85rem; color: var(--muted); max-width: 320px; }
.site-footer .bottom { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin-top: 2.4em; padding-top: 1.4em; border-top: 1px solid var(--border); font-size: 0.8rem; color: var(--muted); }

.flex-between { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }