/* Letter Island: lesson list, back links and end-of-lesson choices (colors from the Early Learning pages) */
@font-face{font-family:"Baloo 2";font-weight:700;font-display:swap;src:url(/assets/fonts/baloo-2-latin-700-normal.woff2) format("woff2")}
:root{--i-ink:#063E46;--i-line:#CBE8E3;--i-yellow:#FFC83D;--i-coral:#ef5a6f;--i-blue:#3b82f6;--i-amber:#f0a500;--i-green:#37b866}
.backlink{display:inline-flex;align-items:center;min-height:44px;font-weight:700;color:var(--i-ink);text-decoration:none}.backlink:hover{text-decoration:underline}.backlink:focus-visible{outline:3px solid var(--i-ink);outline-offset:3px;border-radius:6px}
.backrow{margin:0 0 2px}
/* the list page */
body.isl{margin:0;min-height:100dvh;background:linear-gradient(180deg,#cdeef8 0,#EAF8F5 36%,#EAF8F5 100%);color:var(--i-ink);font-family:"Be Vietnam Pro","Segoe UI",system-ui,sans-serif}
.isl-wrap{max-width:1040px;margin:0 auto;padding:22px 18px 56px}
.isl-h1{font:800 clamp(2.1rem,4.5vw,2.75rem)/1.1 "Baloo 2","Arial Rounded MT Bold",system-ui,sans-serif;text-align:center;margin:4px 0 6px;color:var(--i-ink)}
.isl-sub{text-align:center;color:#2c5b62;font-size:1.1rem;margin:0 auto 12px}
.isl-prog{max-width:420px;margin:0 auto 26px;text-align:center;font-weight:700}.isl-bar{height:12px;background:#d4e7e4;border-radius:8px;overflow:hidden;margin-top:6px}.isl-bar i{display:block;height:100%;width:0;background:var(--i-green);transition:width .4s}
.isl-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.isl-lesson{display:flex;flex-direction:column;align-items:center;gap:8px;height:100%;box-sizing:border-box;background:#fff;border:1px solid var(--i-line);border-radius:18px;padding:16px 14px 18px;box-shadow:0 6px 18px rgba(6,62,70,.10);text-align:center;color:var(--i-ink);text-decoration:none;transition:transform .15s,box-shadow .15s}
.isl-lesson:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(6,62,70,.16)}.isl-lesson:focus-visible{outline:4px solid var(--i-ink);outline-offset:3px}.isl-lesson.next{border:3px solid var(--i-yellow)}
.isl-num{font-weight:800;font-size:.9rem;color:#2f5f66;text-transform:uppercase;letter-spacing:.05em}
.isl-tiles{display:flex;gap:8px}
.isl-tile{width:62px;height:70px;border-radius:14px;display:grid;place-items:center;font:900 2.4rem/1 "Arial Rounded MT Bold","Arial Black",Verdana,sans-serif;color:#fff;text-shadow:0 2px 0 rgba(0,0,0,.18)}
.isl-tile.c0{background:var(--i-coral)}.isl-tile.c1{background:var(--i-blue)}.isl-tile.c2{background:var(--i-amber)}
.isl-status{font-weight:700;font-size:.95rem;border-radius:999px;padding:6px 16px;min-height:32px;display:inline-flex;align-items:center}
.st-new{background:var(--i-yellow);color:var(--i-ink)}.st-go{background:#fff;border:2px solid var(--i-ink);color:var(--i-ink)}.st-done{background:#dff5e6;color:#1d6b3a}
.isl-hint{text-align:center;margin-top:22px;color:#2c5b62}
@media(max-width:860px){.isl-grid{grid-template-columns:repeat(2,1fr)}.isl-tile{width:54px;height:62px;font-size:2rem}}
@media(max-width:520px){.isl-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.isl-lesson,.isl-bar i{transition:none}.isl-lesson:hover{transform:none}}
/* end of lesson: three choices */
.reward-actions{display:grid;gap:10px;justify-items:center;margin-top:20px}
.rbtn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:48px;padding:12px 28px;border-radius:999px;font-weight:700;font-size:1.05rem;text-decoration:none;border:2px solid transparent;color:var(--i-ink)}
.rbtn-main{background:var(--i-yellow)}.rbtn-main:hover{background:#ffd75e}.rbtn-line{background:#fff;border-color:var(--i-ink)}.rbtn-line:hover{background:var(--i-ink);color:#fff}
.rbtn:focus-visible,.textbtn:focus-visible{outline:4px solid var(--i-ink);outline-offset:3px}
.rbtn[hidden]{display:none}
button.textbtn{background:none;border:0;box-shadow:none;color:var(--i-ink);text-decoration:underline;min-height:44px;font-weight:700}
/* Color Island: swatches instead of letter tiles, two lessons side by side */
.isl-grid{grid-template-columns:repeat(2,1fr);max-width:760px;margin:0 auto}
.isl-swatches{display:flex;gap:14px;justify-content:center}.isl-sw{display:flex;flex-direction:column;align-items:center;gap:6px;font-weight:700;font-size:.95rem}
.isl-sw i{display:block;width:60px;height:60px;border-radius:50%;box-shadow:inset 0 -5px 0 rgba(0,0,0,.14),0 3px 8px rgba(0,0,0,.18)}
@media(max-width:620px){.isl-grid{grid-template-columns:1fr}}

/* End-of-lesson report */
#rewardItems{list-style:none;padding:0;margin:10px 0 4px;line-height:1.55}#reward .reward-actions{margin-top:10px;gap:2px}#reward h2{font-size:30px;border:0;outline:0}#reward .stars{font-size:44px}