/* Colours and fonts match start.hostcollective.co.uk */
:root {
  --bg: #0D0C0F; --card: #16141A; --line: #2B2830;
  --ink: #F4F0E6; --ink-2: #D5D0C7; --mute: #9D978F; --faint: #6F6A66;
  --blue: #1E58D0; --blue-2: #3A72E6; --blue-t: #8FB0F4; --red: #E0705C;
  --sans: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "Space Mono", ui-monospace, Menlo, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 16px;
       font: 16px/1.55 var(--sans); background: var(--bg); color: var(--ink); -webkit-font-smoothing: antialiased; }
.card { width: 100%; max-width: 440px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 36px 32px; }
.brand { margin: 0 0 28px; font: 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--mute); }
h1 { margin: 0 0 10px; font-size: 1.6rem; line-height: 1.25; font-weight: 800; letter-spacing: -.01em; }
p { margin: 0 0 18px; color: var(--ink-2); }
strong { color: var(--ink); }
label { display: block; font-size: .9rem; font-weight: 600; margin-bottom: 8px; color: var(--ink-2); }
input[type=email] { width: 100%; padding: 12px 14px; font: inherit; border: 1px solid var(--line); border-radius: 10px;
                    background: var(--bg); color: var(--ink); margin-bottom: 18px; }
input[type=email]:focus { outline: none; border-color: var(--blue-2); box-shadow: 0 0 0 3px rgba(30,88,208,.35); }
button { width: 100%; padding: 13px; font: inherit; font-weight: 600; border: 0; border-radius: 10px;
         background: var(--blue); color: #fff; cursor: pointer; transition: background .15s; }
button:hover { background: var(--blue-2); }
button:focus-visible { outline: 2px solid var(--blue-t); outline-offset: 2px; }
button:disabled { opacity: .6; cursor: default; }
button.link { width: auto; padding: 0; background: none; color: var(--blue-t); font-weight: 500; }
button.link:hover { background: none; color: var(--ink); }
a { color: var(--blue-t); }
.error { color: var(--red); }
.account { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
           margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); font-size: .9rem; color: var(--mute); }
.account span { overflow-wrap: anywhere; }
[hidden] { display: none !important; }

/* ── Signed-in pages ───────────────────────────────────────────────────── */
.page { max-width: 880px; margin: 0 auto; padding: 36px 16px 80px; }
.page h1 { font-size: clamp(1.7rem, 4vw, 2.2rem); margin-bottom: 8px; }
.page h2 { margin: 0 0 8px; font-size: 1.2rem; font-weight: 700; }
.page h3 { margin: 0; font-size: 1rem; font-weight: 600; }
.lede { font-size: 1.05rem; margin-bottom: 28px; }
.eyebrow { margin: 0 0 6px; font: 12px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--mute); }
.meta { font-size: .9rem; color: var(--mute); margin: 8px 0 0; }
.prose { white-space: pre-line; }
.back { display: inline-block; margin-bottom: 20px; font-size: .9rem; text-decoration: none; }

.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.tile { display: flex; flex-direction: column; gap: 4px; padding: 22px; background: var(--card); border: 1px solid var(--line);
        border-radius: 14px; color: var(--ink); text-decoration: none; transition: border-color .15s; }
.tile:hover { border-color: var(--blue-2); }
.tile .tile-title { margin: 0; color: var(--ink); font-weight: 600; }
.tile .bar { margin-top: 12px; }
.tile .cta { margin-top: auto; padding-top: 16px; color: var(--blue-t); font-weight: 500; font-size: .95rem; }

.bar { height: 6px; border-radius: 99px; background: var(--line); overflow: hidden; margin: 12px 0 4px; }
.bar span { display: block; height: 100%; background: var(--blue); border-radius: inherit; }

.panel { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 24px; margin-bottom: 16px; }
.panel-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 6px; }
.panel p:last-child { margin-bottom: 0; }

.lesson-list { list-style: none; margin: 16px 0 0; padding: 0; border-top: 1px solid var(--line); }
.lesson-list li { border-bottom: 1px solid var(--line); }
.lesson-list a { display: flex; align-items: center; gap: 12px; padding: 12px 4px; color: var(--ink); text-decoration: none; }
.lesson-list a:hover { color: var(--blue-t); }
.tick { flex: none; width: 22px; height: 22px; border-radius: 50%; border: 1.5px solid var(--faint); display: grid;
        place-items: center; font-size: 12px; font-weight: 700; }
.lesson-list .done .tick { background: var(--blue); border-color: var(--blue); color: #fff; }
.lesson-list .done a { color: var(--ink-2); }

.done-note { color: #7fd3a8 !important; font-weight: 600; }

.video { position: relative; aspect-ratio: 16 / 9; margin: 20px 0 24px; border-radius: 12px; overflow: hidden;
         background: #000; border: 1px solid var(--line); }
.video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.resources { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--line); }
.resources ul { margin: 0; padding-left: 20px; }
.resources li { margin: 6px 0; }
.lesson-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin-top: 32px;
                  padding-top: 24px; border-top: 1px solid var(--line); }
.lesson-actions .done-note { margin: 0; }
.lesson-actions button, .button { width: auto; padding: 12px 20px; }
.button { display: inline-block; border-radius: 10px; background: var(--blue); color: #fff; font-weight: 600;
          text-decoration: none; }
.button:hover { background: var(--blue-2); }

.checklist { list-style: none; margin: 8px 0 0; padding: 0; }
.check-item { display: flex; gap: 14px; align-items: flex-start; padding: 12px 0; border-top: 1px solid var(--line); }
.check-item:first-child { border-top: 0; }
.check-item input { flex: none; width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--blue); cursor: pointer; }
.check-item label { margin: 0; font-weight: 400; color: var(--ink); cursor: pointer; }
.check-title { display: block; }
.check-item input:checked + label .check-title { color: var(--mute); text-decoration: line-through; }
.check-details { display: block; margin-top: 2px; font-size: .9rem; color: var(--mute); }

.group { margin-bottom: 32px; }
.group > h2 { margin-bottom: 14px; }
.prompt pre { margin: 12px 0 0; padding: 14px; background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
              white-space: pre-wrap; font: .9rem/1.55 var(--mono); color: var(--ink-2); }
button.small { width: auto; padding: 7px 12px; font-size: .85rem; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.summary-bar { margin-bottom: 24px; }

/* ── Sidebar layout ────────────────────────────────────────────────────── */
body.app { display: grid; grid-template-columns: 264px minmax(0, 1fr); place-items: normal; align-items: start; padding: 0; }
.sidebar { position: sticky; top: 0; height: 100vh; overflow-y: auto; background: var(--bg-2, #17151B);
           border-right: 1px solid var(--line); display: flex; flex-direction: column; }
.sidebar-top { display: flex; align-items: center; justify-content: space-between; padding: 24px 20px 8px; }
.sidebar-top .brand { margin: 0; text-decoration: none; }
.menu-button { display: none; width: auto; padding: 6px; background: none; color: var(--ink); }
.menu-button:hover { background: var(--line); }
.sidebar-body { display: flex; flex-direction: column; flex: 1; padding: 8px 12px 20px; }
.profile { margin: 12px 8px 20px; padding: 18px 14px; background: var(--card); border: 1px solid var(--line);
           border-radius: 14px; text-align: center; }
.avatar { display: grid; place-items: center; width: 52px; height: 52px; margin: 0 auto 10px; border-radius: 50%;
          background: linear-gradient(135deg, var(--blue), #0F2E6E); color: #fff; font-weight: 700; font-size: 1.3rem; }
.profile-name { margin: 0; color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }
.profile-meta { margin: 4px 0 0; font-size: .82rem; color: var(--mute); }
.nav-heading { margin: 18px 12px 6px; font: 11px/1.4 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--faint); }
.nav-link { display: flex; align-items: center; gap: 12px; width: 100%; padding: 10px 12px; border-radius: 10px;
            color: var(--ink-2); text-decoration: none; font: 500 .95rem/1.3 var(--sans); background: none; text-align: left; }
.nav-link:hover { background: var(--card); color: var(--ink); }
.nav-link[aria-current=page] { background: var(--blue); color: #fff; }
.icon { display: inline-flex; flex: none; width: 20px; height: 20px; }
.icon svg { width: 100%; height: 100%; }
.sign-out { margin-top: auto; color: var(--mute); }
.page { max-width: 1040px; width: 100%; margin: 0; padding: 48px 40px 96px; }

@media (max-width: 860px) {
  body.app { grid-template-columns: minmax(0, 1fr); }
  .sidebar { height: auto; max-height: 100vh; z-index: 20; border-right: 0; border-bottom: 1px solid var(--line); }
  .sidebar-top { padding: 14px 16px; }
  .menu-button { display: inline-flex; }
  .sidebar-body { display: none; }
  .sidebar.open .sidebar-body { display: flex; }
  .page { padding: 28px 16px 72px; }
}

/* ── Classroom cards, module page, quiz ────────────────────────────────── */
.module-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
.module-card { display: flex; flex-direction: column; overflow: hidden; background: var(--card); border: 1px solid var(--line);
               border-radius: 16px; color: var(--ink); text-decoration: none; transition: border-color .15s, transform .15s; }
a.module-card:hover { border-color: var(--blue-2); transform: translateY(-2px); }
.module-card.locked { opacity: .55; }
.module-card-body { display: flex; flex-direction: column; flex: 1; padding: 18px 20px 20px; }
.module-card h2 { font-size: 1.1rem; margin: 0 0 6px; }
.module-card p { margin: 0; font-size: .92rem; }
.clamp { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card-progress { display: flex; align-items: center; gap: 10px; margin-top: auto; padding-top: 16px; font-size: .8rem; color: var(--mute); }
.card-progress .bar { flex: 1; margin: 0; }
.cover { position: relative; aspect-ratio: 16 / 9; background: #0F2E6E; overflow: hidden; }
.cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.cover-placeholder { display: grid; place-items: center; height: 100%;
                     background: radial-gradient(circle at 30% 20%, var(--blue-2), #0F2E6E 55%, var(--bg) 100%); }
.cover-placeholder span { font: 800 3.4rem/1 var(--sans); color: rgba(244,240,230,.9); letter-spacing: -.02em; }
.cover-lock { position: absolute; inset: 0; display: grid; place-items: center; background: rgba(13,12,15,.55);
              color: var(--ink); font-weight: 600; font-size: .95rem; }
.module-hero .cover { border-radius: 16px; margin-bottom: 24px; max-height: 300px; aspect-ratio: auto; height: 260px;
                      border: 1px solid var(--line); }

.quiz { margin-top: 24px; }
.quiz-form { margin-top: 16px; }
.question { margin: 0 0 16px; padding: 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg); }
.question legend { float: left; width: 100%; padding: 0; margin-bottom: 12px; font-weight: 600; color: var(--ink); }
.q-number { margin-right: 8px; color: var(--mute); }
.option { clear: both; display: flex; align-items: flex-start; gap: 12px; margin: 0 0 6px; padding: 10px 12px; border: 1px solid var(--line);
          border-radius: 10px; font-weight: 400; color: var(--ink-2); cursor: pointer; }
.option:hover { border-color: var(--faint); }
.option input { flex: none; width: 18px; height: 18px; margin: 1px 0 0; accent-color: var(--blue); }
.option:has(input:checked) { border-color: var(--blue); background: rgba(30,88,208,.12); color: var(--ink); }
.wrong-note { display: none; margin: 10px 0 0; color: var(--red); font-size: .9rem; }
.question.wrong { border-color: var(--red); }
.question.wrong .wrong-note { display: block; }
.quiz-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; }
.quiz-actions button { width: auto; padding: 12px 22px; }
.quiz-status { margin: 0; color: var(--mute); }
.quiz .button { margin-top: 4px; }
.module-card.locked .cover-placeholder span { visibility: hidden; }
.module-card.locked .cover-lock { background: rgba(13,12,15,.4); }