/* SK P2 additions for the shared LearnUp V2 shell. */
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
:root{--green:#177a55;--green2:#38a978;--mint:#eaf8f1;--ink:#193f32;--muted:#627c71;--line:#cce5d8;--red:#b94747}
html{background:#eaf6f0}body{margin:0;color:var(--ink);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Arial,sans-serif;background:linear-gradient(145deg,#eaf8f1,#eef6ff)}
a{color:inherit}.shell{width:100%;min-height:100vh;margin:0;background:#fbfffd}.v2-main{text-align:center;background:#fbfffd}
.screen{display:none;align-items:center;justify-content:center;flex-direction:column}.screen.active{display:flex}
.eyebrow{font-size:14px;font-weight:900;color:var(--green)}.title{line-height:1.08}.subtitle{max-width:760px;color:var(--muted);line-height:1.5}
.card{width:min(860px,100%);padding:18px;border:2px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 10px 24px #173f2910}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 20px;border:0;border-radius:999px;font:inherit;font-weight:900;cursor:pointer;text-decoration:none}
.primary{color:#fff;background:linear-gradient(135deg,var(--green),var(--green2));box-shadow:0 8px 18px #177a5535}.secondary,.audio{color:var(--green);background:#fff;border:2px solid #a9d7c2}.btn:disabled{opacity:.42;cursor:not-allowed}
.options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;width:min(860px,100%);margin-top:12px}.option{min-height:56px;padding:10px;border:2px solid var(--line);border-radius:15px;background:#fff;color:var(--ink);font:inherit;font-size:18px;font-weight:850;cursor:pointer}.option.correct{border-color:var(--green2);background:#e3f7ed}.option.wrong{border-color:#e58b8b;background:#fff0f0}.feedback{min-height:28px;margin-top:10px;font-size:16px;font-weight:850}.feedback.ok{color:var(--green)}.feedback.no{color:var(--red)}
.single-question{grid-template-columns:1fr!important;width:min(720px,100%)}.single-question .card,.single-question .answer-box{width:100%;height:auto}
.practice-question{width:min(820px,100%);font-size:clamp(21px,3vw,32px);line-height:1.35;margin:10px 0}.practice-options{width:min(720px,100%)}.practice-link{margin-top:14px}.complete{color:var(--green);font-size:clamp(19px,3vw,28px);font-weight:950}
.answer-row{display:flex;align-items:center;justify-content:center;gap:10px;width:min(620px,100%);margin-top:14px}.answer-input{flex:1;min-width:0;min-height:54px;padding:10px 14px;border:2px solid var(--line);border-radius:14px;color:var(--ink);background:#fff;font:inherit;font-size:20px;font-weight:800}
.v2-main .big-number{font-size:52px}.v2-main .big-words{font-size:20px;margin:4px 0 8px}.v2-main .block-groups{margin:8px auto;gap:7px}.v2-main .block-group{min-height:82px;padding:7px 5px}.v2-main .block-items{min-height:50px;gap:3px}.v2-main .hundred{width:38px;height:38px}.v2-main .ten{height:38px}.v2-main .builder{gap:7px}.v2-main .builder-part{padding:7px 5px}.v2-main .builder-part strong{font-size:29px}.v2-main .step-row{margin-top:5px}.v2-main .step-btn{width:40px;height:40px}.v2-main .builder-total{font-size:38px;margin:7px 0}
.menu-title{margin:4px 0;font-size:clamp(24px,4vw,38px);line-height:1.12}.menu-subtitle{margin:0 0 10px;color:var(--muted)}.menu-grid{display:grid;gap:10px;width:min(820px,100%)}.menu-card{display:block;text-align:left;text-decoration:none;padding:12px 16px}.menu-card h2{margin:3px 0;font-size:clamp(18px,2.5vw,24px)}.menu-card p{margin:3px 0;line-height:1.35}.menu-card .status{display:inline-block;margin-top:5px;padding:3px 8px;border-radius:999px;background:var(--mint);color:var(--green);font-size:11px;font-weight:900}
.v2-panel .body br{content:""}.v2-panel .body br:after{content:"\A";white-space:pre}
@media(max-width:700px){.options{grid-template-columns:1fr}.v2-main .screen{justify-content:center!important}.menu-card{padding:9px 12px}.menu-card p{font-size:13px}.menu-card h2{font-size:18px}.practice-question{font-size:20px}.practice-options .option{min-height:52px;font-size:17px}.answer-row{flex-direction:column}.answer-row .btn,.answer-input{width:100%}.v2-panel .btn{min-height:44px}.v2-main .block-groups,.v2-main .builder{grid-template-columns:repeat(3,minmax(0,1fr))!important}.v2-main .block-group{min-height:78px!important}.v2-main .builder-part{min-width:0}.v2-main .step-btn{width:36px;height:36px}}
@media(max-height:700px){.menu-subtitle{display:none}.menu-grid{gap:6px}.menu-card{padding:7px 10px}.v2-main .practice-question{font-size:18px}}

/* Subject menu: show every Chapter on one page, following the SJKC menu pattern. */
.subject-menu-page .v2-main{bottom:0;overflow-y:auto}
.subject-menu-page .v2-nav{display:none}
.subject-menu-page .v2-main .screen{justify-content:flex-start!important;padding-top:12px!important;padding-bottom:18px!important}
.subject-menu-page .subject-chapter-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;width:min(1180px,100%)}
.subject-menu-page .subject-chapter-grid .menu-card{display:flex;min-height:92px;flex-direction:column;justify-content:center;padding:10px 12px}
.subject-menu-page .subject-chapter-grid .menu-card h2{font-size:clamp(16px,1.7vw,21px);line-height:1.18}
.subject-menu-page .subject-chapter-grid .menu-card p,.subject-menu-page .subject-chapter-grid .menu-card .status{display:none}
@media(max-width:700px){
 .subject-menu-page .v2-main .screen{padding:8px 10px 12px!important}
 .subject-menu-page .menu-title{font-size:25px;margin:2px 0}
 .subject-menu-page .menu-subtitle{display:none}
 .subject-menu-page .subject-chapter-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}
 .subject-menu-page .subject-chapter-grid .menu-card{min-height:66px;padding:7px 9px}
 .subject-menu-page .subject-chapter-grid .menu-card h2{font-size:15px;line-height:1.14;margin:2px 0}
 .subject-menu-page .subject-chapter-grid .eyebrow{font-size:11px}
}

/* Chapter menu: show every Unit together on one page, like the SJKC indexes. */
.chapter-menu-page .v2-main{bottom:0;overflow-y:auto}
.chapter-menu-page .v2-nav{display:none}
.chapter-menu-page .v2-main .screen{justify-content:flex-start!important;padding-top:8px!important;padding-bottom:10px!important}
.chapter-menu-page .menu-title{font-size:clamp(22px,3vw,32px);margin:2px 0}
.chapter-menu-page .menu-subtitle{font-size:13px;margin:0 0 6px}
.chapter-menu-page .chapter-unit-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:6px;width:min(1240px,100%)}
.chapter-menu-page .chapter-unit-grid .menu-card{display:flex;min-height:78px;flex-direction:column;justify-content:center;padding:7px 9px}
.chapter-menu-page .chapter-unit-grid .menu-card h2{font-size:clamp(13px,1.25vw,17px);line-height:1.12;margin:2px 0}
.chapter-menu-page .chapter-unit-grid .menu-card p{display:none}
.chapter-menu-page .chapter-unit-grid .eyebrow{font-size:11px}
@media(max-width:900px){
 .chapter-menu-page .chapter-unit-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:5px}
 .chapter-menu-page .chapter-unit-grid .menu-card{min-height:70px;padding:6px 8px}
 .chapter-menu-page .chapter-unit-grid .menu-card h2{font-size:14px}
}
@media(max-width:520px){
 .chapter-menu-page .v2-main .screen{padding:6px 7px 8px!important}
 .chapter-menu-page .menu-title{font-size:20px;margin:1px 0}
 .chapter-menu-page .menu-subtitle{font-size:11px;margin-bottom:4px}
 .chapter-menu-page .chapter-unit-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:4px}
 .chapter-menu-page .chapter-unit-grid .menu-card{min-height:57px;padding:4px 5px}
 .chapter-menu-page .chapter-unit-grid .menu-card h2{font-size:11px;line-height:1.08;margin:1px 0}
 .chapter-menu-page .chapter-unit-grid .eyebrow{font-size:9px}
}