/* Inside pages, rich lessons, interactive explorers, step-by-step lessons. Load order matters: later files refine earlier ones (see docs/STRUCTURE.md). */
/* ===== inside pages ===== */
.eyebrow { display: inline-block; font-size: .78rem; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; color: var(--y-deep); margin-bottom: 6px; }
.small { font-size: .88rem; }
.chip.y { background: var(--y-soft); }
.crumbs { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; color: var(--muted); font-weight: 500; }
.crumbs a { cursor: pointer; padding: 4px 10px; border-radius: 99px; } .crumbs a:hover { background: var(--y-soft); color: var(--ink); }
.crumbs b { color: var(--ink); font-weight: 600; padding: 4px 10px; background: var(--y-soft); border-radius: 99px; } .crumbs .sep { opacity: .4; }
.brand { cursor: pointer; }

.banner { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; margin: 14px 0 28px; padding: 34px 38px; border-radius: 28px; overflow: hidden;
  background: linear-gradient(120deg, color-mix(in srgb, var(--sc, #ffb800) 14%, #fff), color-mix(in srgb, var(--sc, #ffb800) 30%, #fff)); border: 2px solid color-mix(in srgb, var(--sc, #ffb800) 35%, #fff); }
.banner .display { font-size: clamp(1.8rem, 4.4vw, 3rem); margin: 0 0 8px; } .banner .display.sm .dash-word { border-color: var(--sc, var(--y)); }
.banner .lead { margin: 0 0 10px; }
.banner .bar { max-width: 360px; background: rgba(255,255,255,.7); } .banner .bar > i { background: var(--sc, var(--y)); }
.banner-art .bigicon { font-size: 7rem; line-height: 1; filter: drop-shadow(0 18px 14px rgba(0,0,0,.2)); animation: bob 4s ease-in-out infinite; transform-origin: 50% 80%; }
.ugrid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); margin-bottom: 20px; }
.ucard { position: relative; background: #fff; border: 1.5px solid var(--line); border-radius: 22px; padding: 22px 22px 20px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 8px; transition: transform .18s, box-shadow .18s; overflow: hidden; }
.ucard::before { content: ""; position: absolute; left: 0; top: 0; right: 0; height: 6px; background: var(--uc, var(--y)); }
.ucard:hover { transform: translateY(-4px); box-shadow: 0 16px 36px rgba(20,20,60,.13); }
.ucard.now { border-color: var(--y); box-shadow: 0 0 0 4px var(--y-soft), var(--shadow); }
.ucard h3 { margin: 4px 0 0; font-size: 1.12rem; padding-right: 34px; }
.ucard .meta { color: var(--muted); font-size: .84rem; }
.ucard .unum { position: absolute; right: 16px; top: 18px; width: 30px; height: 30px; border-radius: 10px; background: var(--y-soft); display: grid; place-items: center; font-weight: 700; font-size: .85rem; }
.ucard .ribbon { align-self: flex-start; background: var(--navy); color: #fff; font-size: .74rem; font-weight: 600; padding: 3px 12px; border-radius: 99px; }
.ucard .acts { display: flex; gap: 8px; margin-top: auto; padding-top: 10px; flex-wrap: wrap; }
.ucard .acts button:first-child { flex: 0 0 auto; }

.learn-grid { display: grid; grid-template-columns: minmax(0, 2.1fr) minmax(260px, 1fr); gap: 24px; align-items: start; margin-top: 12px; }
.learn-grid .lesson { padding: 32px 34px; position: relative; } .learn-grid .lesson h1 { font-size: 2rem; margin: 2px 0 10px; }
.lesson b { background: linear-gradient(transparent 60%, var(--y-soft) 60%); }
.coach-card { background: linear-gradient(160deg, var(--y-soft), #fff); border: 1.5px solid #ffe29a; border-radius: 24px; padding: 22px; text-align: center; position: sticky; top: 16px; display: grid; gap: 12px; }
.coach-card .mascot { width: 160px; margin: 0 auto; filter: drop-shadow(0 14px 14px rgba(180,120,0,.25)); animation: bob 4s ease-in-out infinite; }
.coach-card .bubble { margin: 0; display: block; box-shadow: var(--shadow); }
.coach-card button { width: 100%; }

.qwrap { max-width: 1040px; margin: 0 auto; }
.qhead { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.qprog { height: 16px; background: var(--line); border-radius: 99px; overflow: hidden; margin-bottom: 18px; } .qprog > i { display: block; height: 100%; background: linear-gradient(90deg, var(--y), #ffd45a); border-radius: 99px; transition: width .4s; }
.qcard { border-top: 8px solid var(--y); padding: 28px 30px; }
.qcard .q { font-size: 1.55rem; }
.dots { display: flex; gap: 8px; flex-wrap: wrap; margin: 4px 0 16px; } .dots i { width: 26px; height: 26px; border-radius: 9px; background: var(--line); cursor: pointer; display: grid; place-items: center; font-style: normal; font-size: .72rem; font-weight: 700; color: var(--muted); }
.dots i.done { background: var(--y); color: var(--ink); } .dots i.cur { outline: 3px solid var(--navy); outline-offset: 2px; }
.feedback { display: flex; gap: 14px; align-items: center; } .feedback .fb-art { width: 62px; flex: none; } .feedback .fb-art .mascot { width: 100%; height: auto; }

.result-hero { position: relative; display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center; text-align: left; padding: 30px 34px; border: 0; overflow: hidden;
  background: linear-gradient(135deg, var(--y), #ffd45a); box-shadow: 0 14px 34px rgba(255,184,0,.35); margin: 14px 0 22px; }
.result-hero .score { font-size: 4.2rem; } .result-hero .mascot { width: 170px; filter: drop-shadow(0 12px 12px rgba(120,80,0,.25)); animation: bob 2.4s ease-in-out infinite; }
.result-hero .bar { background: rgba(255,255,255,.6); max-width: 360px; } .result-hero .bar > i { background: var(--navy); }
.result-hero .row { margin-top: 12px; }
.rtable { display: grid; gap: 8px; margin: 8px 0 4px; } .rtable div { display: flex; justify-content: space-between; background: rgba(255,255,255,.6); border-radius: 12px; padding: 6px 14px; font-weight: 500; }
.rcard { background: #fff; border: 1.5px solid var(--line); border-left: 8px solid var(--bad); border-radius: 18px; padding: 16px 20px; margin: 12px 0; box-shadow: var(--shadow); } .rcard.ok { border-left-color: var(--good); }
.rcard .a { margin-top: 6px; } .rcard .mine { color: var(--bad-ink); } .rcard .right { color: var(--good-ink); font-weight: 600; }

.auth { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: center; min-height: 480px; margin-top: 10px; position: relative; }
.auth .art { display: grid; place-items: center; } .auth .art .mascot { width: min(100%, 300px); filter: drop-shadow(0 20px 20px rgba(180,120,0,.25)); animation: bob 4s ease-in-out infinite; }
.auth .card { padding: 32px; } .auth .who { display: flex; gap: 14px; align-items: center; margin-bottom: 10px; } .auth .who .av { width: 64px; height: 64px; border-radius: 50%; background: var(--y-soft); display: grid; place-items: center; font-size: 2.2rem; }
.auth button[type=submit] { width: 100%; padding: 14px; font-size: 1.05rem; }

.admin-top { display: flex; align-items: center; gap: 14px; margin: 10px 0 22px; flex-wrap: wrap; } .admin-top .av { width: 60px; height: 60px; border-radius: 18px; background: var(--navy); color: #fff; display: grid; place-items: center; font-size: 1.9rem; }
.kcard { margin-bottom: 20px; padding: 0; overflow: hidden; }
.kcard header { display: flex; gap: 16px; align-items: center; padding: 20px 24px; background: linear-gradient(120deg, var(--y-soft), #fff); border-bottom: 1.5px solid var(--line); flex-wrap: wrap; }
.kcard header .av { width: 56px; height: 56px; border-radius: 50%; background: #fff; display: grid; place-items: center; font-size: 1.9rem; box-shadow: var(--shadow); }
.kcard .kstats { display: flex; gap: 26px; margin-left: auto; flex-wrap: wrap; } .kcard .kstats b { display: block; font-family: var(--head); font-size: 1.5rem; line-height: 1.1; } .kcard .kstats span { color: var(--muted); font-size: .8rem; }
.kcard .body { padding: 8px 24px 20px; } .kcard th { color: var(--muted); font-weight: 600; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; }
.logins { margin-bottom: 20px; } .logins .form.row { padding: 8px 0; border-bottom: 1px solid var(--line); } .logins .form.row:last-child { border: 0; }
@media (max-width: 860px) {
  .learn-grid, .auth { grid-template-columns: 1fr; } .coach-card { position: static; } .auth .art { display: none; }
  .banner { grid-template-columns: 1fr; padding: 24px; } .banner-art { display: none; } .result-hero { grid-template-columns: 1fr; text-align: center; } .result-hero .mascot { margin: 0 auto; } .result-hero .bar { margin: 0 auto; }
  .ugrid { grid-template-columns: 1fr; } .qcard { padding: 20px; } .kcard .kstats { margin-left: 0; }
}

/* ===== rich lessons ===== */
.lesson .intro { font-size: 1.12rem; color: var(--ink); background: var(--y-soft); border-radius: 16px; padding: 14px 18px; margin: 10px 0 18px; font-weight: 500; }
.lesson h3 { margin: 26px 0 8px; font-size: 1.25rem; display: flex; align-items: center; gap: 8px; }
.lesson h3::before { content: ""; width: 8px; height: 22px; border-radius: 4px; background: var(--y); flex: none; }
.lesson ul, .lesson ol { padding-left: 1.3em; margin: .5em 0 1em; } .lesson li { margin: .3em 0; }
.lesson .ex { background: #fff; border: 2px solid var(--y-soft); border-left: 8px solid var(--y); border-radius: 16px; padding: 14px 18px; margin: 14px 0; }
.lesson .ex > b:first-child { display: block; color: var(--y-deep); font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; margin-bottom: 4px; background: none; }
.lesson .ex p { margin: .35em 0; }
.lesson .tip, .lesson .warn { border-radius: 16px; padding: 12px 16px; margin: 14px 0; }
.lesson .tip { background: #e8f7ee; border: 1.5px solid #b7e4c7; } .lesson .warn { background: #ffecee; border: 1.5px solid #ffc2cb; }
.lesson table.mini { width: auto; min-width: 60%; margin: 10px 0 16px; border-radius: 12px; overflow: hidden; border: 1.5px solid var(--line); font-size: .95rem; }
.lesson table.mini th { background: var(--navy); color: #fff; text-align: center; font-weight: 600; padding: 8px 12px; border: 0; }
.lesson table.mini td { text-align: center; padding: 7px 12px; border-bottom: 1px solid var(--line); } .lesson table.mini tr:nth-child(even) td { background: #faf9ff; }
.lesson table.mini td:first-child { font-weight: 600; text-align: left; }
.lesson dl.vocab { display: grid; grid-template-columns: auto 1fr; gap: 6px 14px; margin: 8px 0 14px; padding: 14px 18px; background: #f3f4ff; border-radius: 16px; }
.lesson dl.vocab dt { font-weight: 700; color: var(--navy); } .lesson dl.vocab dd { margin: 0; }
.lesson details.try { background: linear-gradient(120deg, #fff8e1, #fff); border: 2px dashed var(--y); border-radius: 16px; padding: 12px 18px; margin: 18px 0; }
.lesson details.try summary { cursor: pointer; font-weight: 700; list-style: none; } .lesson details.try summary::-webkit-details-marker { display: none; }
.lesson details.try summary::before { content: "🧠 Try it yourself — "; } .lesson details.try[open] summary { margin-bottom: 8px; }
.lesson details.try .ans { background: #e8f7ee; border-radius: 10px; padding: 8px 12px; margin-top: 8px; } 
.lesson .recap { background: var(--navy); color: #fff; border-radius: 18px; padding: 16px 22px; margin: 22px 0 6px; }
.lesson .recap b { color: var(--y); background: none; } .lesson .recap ul { margin: .4em 0 0; }
.lesson code { background: #f1f1fa; padding: 1px 7px; border-radius: 6px; }
.lesson .cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; margin: 10px 0 14px; } .lesson .cols > div { background: #fff; border: 1.5px solid var(--line); border-radius: 14px; padding: 10px 14px; }
.lesson .cols > div b { display: block; color: var(--navy); background: none; }
.lesson .chart { font-family: ui-monospace, Menlo, monospace; background: #faf9ff; border: 1.5px solid var(--line); border-radius: 12px; padding: 10px 14px; white-space: pre; overflow-x: auto; font-size: .92rem; line-height: 1.5; margin: 10px 0 14px; }
.lesson b { background: linear-gradient(transparent 62%, var(--y-soft) 62%); }
.learn-grid .lesson { font-size: 1.04rem; }

/* ===== interactive explorers ===== */
.widget { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; align-items: center; background: linear-gradient(135deg, #fffdf3, #f3f4ff); border: 2px solid var(--y-soft); border-radius: 20px; padding: 16px; margin: 16px 0; }
.widget::before { content: "🎛️ Explore it — drag the sliders"; grid-column: 1 / -1; font-weight: 700; font-size: .86rem; color: var(--navy); }
.wbox .wsvg { width: 100%; height: auto; background: #fff; border-radius: 14px; border: 1.5px solid var(--line); display: block; }
.wsvg .gr { stroke: #ececf6; stroke-width: 1; } .wsvg .ax { stroke: #14142b; stroke-width: 2; } .wsvg.wide { background: #fff; border-radius: 12px; border: 1.5px solid var(--line); margin-bottom: 8px; }
.wctl { display: grid; gap: 10px; } .wrow { display: grid; grid-template-columns: 96px 1fr 46px; align-items: center; gap: 8px; font-size: .92rem; font-weight: 600; }
.wrow input[type=range] { width: 100%; padding: 0; border: 0; accent-color: var(--y-deep); } .wrow select { font: inherit; padding: 6px 10px; border-radius: 10px; border: 2px solid var(--line); }
.wv { text-align: right; color: var(--navy); } .winfo { background: #fff; border-radius: 12px; padding: 10px 14px; border: 1.5px solid var(--line); font-size: .93rem; display: grid; gap: 4px; }
.weq { font-family: var(--head); font-weight: 700; font-size: 1.15rem; color: var(--navy); }
.bal { position: relative; height: 150px; grid-column: 1 / -1; } .widget[data-widget=balance] { grid-template-columns: 1fr; }
.bal .beam { position: absolute; left: 10%; right: 10%; top: 40px; height: 8px; background: var(--navy); border-radius: 6px; transition: transform .35s cubic-bezier(.3,1.4,.5,1); transform-origin: 50% 50%; }
.bal .pan { position: absolute; top: 8px; width: 90px; height: 64px; border: 3px solid var(--y-deep); border-top: 0; border-radius: 0 0 40px 40px; background: var(--y-soft); display: grid; place-items: center; font-family: var(--head); font-size: 1.3rem; }
.bal .pan.l { left: -10px; transform: translateY(32px); } .bal .pan.r { right: -10px; transform: translateY(32px); }
.bal .stand { position: absolute; left: calc(50% - 5px); top: 44px; width: 10px; height: 100px; background: var(--navy); border-radius: 6px; }
@media (max-width: 700px) { .widget { grid-template-columns: 1fr; } }

/* ===== step-by-step lessons ===== */
.segs { display: flex; gap: 6px; margin: 10px 0 6px; } .segs i { flex: 1; height: 12px; border-radius: 99px; background: var(--line); cursor: default; transition: background .3s, transform .15s; }
.segs i.done { background: var(--y); cursor: pointer; } .segs i.cur { background: linear-gradient(90deg, var(--y) 50%, var(--line) 50%); box-shadow: 0 0 0 3px var(--y-soft); } .segs i.done:hover { transform: scaleY(1.4); }
.segmeta { display: flex; justify-content: space-between; align-items: center; color: var(--muted); font-size: .86rem; font-weight: 600; margin-bottom: 8px; }
.bite h1 { font-size: 1.9rem; margin: 4px 0 6px; } .bite .actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 22px; padding-top: 18px; border-top: 2px dashed var(--line); }
.checkq .q { font-size: 1.3rem; } .checkdots { display: flex; gap: 8px; margin-bottom: 12px; } .checkdots i { width: 14px; height: 14px; border-radius: 50%; background: var(--line); } .checkdots i.ok { background: var(--good); } .checkdots i.bad { background: var(--bad); } .checkdots i.cur { outline: 3px solid var(--y); outline-offset: 2px; }
.ucard .stepline { display: flex; align-items: center; gap: 8px; font-size: .84rem; font-weight: 600; color: var(--muted); } .ucard .stepline .segs { flex: 1; margin: 0; } .ucard .stepline .segs i { height: 8px; }
.ucard .acts .primary { flex: 1 1 100%; }
.tier { margin: 26px 0 10px; display: flex; align-items: center; gap: 12px; font-size: 1.3rem; } .tier span { background: var(--navy); color: #fff; font-size: .75rem; padding: 3px 12px; border-radius: 99px; letter-spacing: .06em; text-transform: uppercase; }
.tier::after { content: ""; flex: 1; height: 2px; background: var(--line); }
.tier { grid-column: 1 / -1; }
.kcard .body { overflow-x: auto; }

/* timeline explorer */
.widget.tl { display: block; } .widget.tl::before { content: "🕰️ Tap each date to see what happened"; display: block; margin-bottom: 8px; }
.tl-track { display: flex; gap: 8px; overflow-x: auto; padding: 6px 2px 12px; scroll-snap-type: x proximity; }
.tl-dot { flex: none; scroll-snap-align: center; min-width: 118px; max-width: 150px; text-align: left; background: #fff; color: var(--ink); border: 2px solid var(--line); box-shadow: none; padding: 8px 12px; border-radius: 14px; display: grid; gap: 2px; font-weight: 500; font-size: .82rem; line-height: 1.25; }
.tl-dot b { font-family: var(--head); font-size: 1.05rem; color: var(--navy); } .tl-dot:hover { border-color: var(--y); background: #fffbea; transform: none; }
.tl-dot.on { background: var(--navy); color: #fff; border-color: var(--navy); } .tl-dot.on b { color: var(--y); }
.tl-card { background: #fff; border: 2px solid var(--y-soft); border-left: 8px solid var(--y); border-radius: 16px; padding: 12px 16px; display: grid; gap: 4px; }
.tl-year { font-family: var(--head); font-weight: 800; font-size: 1.6rem; color: var(--navy); line-height: 1; } .tl-title { font-weight: 700; font-size: 1.05rem; }
/* extra lesson components */
.lesson .chain { display: flex; flex-wrap: wrap; gap: 6px; align-items: stretch; margin: 12px 0; } .lesson .chain > div { background: #fff; border: 2px solid var(--line); border-radius: 12px; padding: 8px 12px; font-size: .92rem; flex: 1 1 130px; text-align: center; }
.lesson .chain > div b { display: block; color: var(--navy); background: none; font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; } .lesson .chain > i { align-self: center; font-style: normal; color: var(--y-deep); font-weight: 800; }
.lesson .people { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; margin: 12px 0; } .lesson .people > div { background: #f3f4ff; border-radius: 14px; padding: 10px 14px; font-size: .93rem; }
.lesson .people > div b { display: block; color: var(--navy); background: none; }
.lesson blockquote { margin: 12px 0; padding: 10px 16px; border-left: 6px solid var(--navy); background: #f7f7ff; border-radius: 0 12px 12px 0; font-style: italic; } .lesson blockquote cite { display: block; font-style: normal; font-size: .85rem; color: var(--muted); margin-top: 4px; }
.lesson .texas { background: linear-gradient(120deg, #fff5e6, #fff); border: 2px solid #ffd9a1; border-radius: 16px; padding: 12px 16px; margin: 14px 0; } .lesson .texas::before { content: "⭐ Texas connection"; display: block; font-weight: 700; font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: #b45309; margin-bottom: 4px; }

.hero .hero-art { background: radial-gradient(circle, rgba(255,255,255,.6), rgba(255,255,255,0) 70%); border-radius: 50%; }
.learn-grid > *, .widget, .widget > * { min-width: 0; }
.tl-track { max-width: 100%; }

/* keep lesson-text highlights out of widgets/timelines; use wide screens well */
.lesson .widget b, .lesson .tl-dot b, .lesson .tl-card b, .lesson .winfo b, .lesson .weq b { background: none; }
.tl-dot b, .tl-year { background: none !important; }
.tl-dot { min-width: 140px; max-width: 190px; }
.lesson { max-width: none; } .learn-grid .lesson { padding: 34px clamp(26px, 3vw, 48px); }
@media (min-width: 1300px) { .ugrid { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); } .grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); } }
@media (max-width: 860px) { #app { width: 100%; margin: 0; padding: 4px 18px 40px; } }

/* more explorers */
.punn { border-collapse: collapse; margin: 0 auto; } .punn th { background: var(--navy); color: #fff; width: 54px; height: 46px; text-align: center; border: 2px solid #fff; border-radius: 8px; font-family: var(--head); }
.punn td { background: var(--y-soft); text-align: center; width: 76px; height: 62px; border: 2px solid #fff; border-radius: 8px; font-family: var(--head); font-weight: 800; font-size: 1.25rem; }
.eqrow { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; justify-content: center; margin: 10px 0; font-size: 1.25rem; } .eqsp { display: inline-flex; align-items: center; gap: 4px; background: #fff; border: 2px solid var(--line); border-radius: 14px; padding: 4px 8px; }
.eqsp button { padding: 0 9px; border-radius: 8px; font-size: 1.1rem; line-height: 1.5; box-shadow: none; } .eqsp .co { font-family: var(--head); min-width: 20px; text-align: center; color: var(--navy); background: none; } .eqsp .fm { font-weight: 700; } .eqrow .plus, .eqrow .arrow { font-weight: 800; color: var(--y-deep); }
.widget select, .widget input[type=number] { font: inherit; padding: 6px 10px; border-radius: 10px; border: 2px solid var(--line); background: #fff; max-width: 100%; }
.widget[data-widget=eqbalance], .widget[data-widget=calc] { grid-template-columns: 1fr; }