:root{--navy:#17324d;--teal:#2a7f83;--cream:#f7f1e7;--gold:#d9a62e;--ink:#20364b;--muted:#718096}
*{box-sizing:border-box}body{margin:0;background:#f3f6f9;color:var(--ink);font-family:Arial,sans-serif}
header{height:78px;background:var(--navy);color:white;display:flex;align-items:center;padding:0 22px;gap:22px}
.brand{font-weight:800;font-size:19px;line-height:1.05;min-width:190px}.brand b{color:#f2bd43}
.head{border-left:1px solid #ffffff55;padding-left:22px;flex:1}.head strong{font-size:19px}.head span{display:block;font-size:14px;margin-top:4px;opacity:.9}
header button{border:0;border-radius:50%;width:40px;height:40px;background:#ffffff26;color:white;font-size:19px;cursor:pointer}
.layout{display:grid;grid-template-columns:238px 1fr;min-height:calc(100vh - 78px)}
aside{background:white;padding:16px 12px;border-right:1px solid #e1e7ed;display:flex;flex-direction:column;gap:7px}
.mode{display:flex;background:#edf1f5;padding:4px;border-radius:10px;margin-bottom:9px}.mode button{flex:1;border:0;padding:9px 4px;border-radius:8px;font-weight:bold;color:#66758a;cursor:pointer}.mode .on{background:white;color:var(--navy);box-shadow:0 1px 5px #0001}
.nav{display:flex;align-items:flex-start;gap:9px;text-align:left;border:0;background:transparent;border-radius:12px;padding:11px 9px;color:#6e7a8d;font-weight:bold;line-height:1.25;cursor:pointer}.nav .n{width:27px;height:27px;border-radius:50%;background:#8b95a5;color:white;display:grid;place-items:center;flex:none}.nav.active{background:#dcecff;color:var(--navy)}.nav.active .n{background:var(--navy)}
.progress{margin-top:auto;background:#eaf3ff;border-radius:13px;padding:12px;font-weight:bold;color:var(--navy)}.bar{height:8px;border-radius:20px;background:#cbd5e1;margin-top:8px;overflow:hidden}.bar i{display:block;height:100%;background:#49b84d;width:14%}
main{padding:22px;min-width:0}.title-row{display:flex;justify-content:space-between;align-items:end;margin-bottom:14px;gap:12px}.eyebrow{font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);font-weight:900}.title-row h1{margin:4px 0 0;color:var(--navy);font-size:25px}.hint{font-size:13px;color:var(--muted)}
.panel{background:white;border:1px solid #e0e6ec;border-radius:16px;overflow:hidden;box-shadow:0 4px 18px #17324d0b}
 .scene{position:relative}.scene img{width:100%;display:block}.hot{position:absolute;transform:translate(-50%,-50%);width:34px;height:34px;padding:0;display:grid;place-items:center;border:1px solid #ffffff;background:#ffffffeb;color:var(--navy);font-size:17px;border-radius:50%;box-shadow:0 2px 7px #172b3d35;cursor:pointer}.hot:hover{background:#fff4c9;transform:translate(-50%,-50%) scale(1.08)}.hot.teacher{left:91%;top:43%}.hot.student{left:37%;top:40%}.hot.man{left:15%;top:31%}.hot.woman{left:13%;top:70%}.hot.tag{left:35%;top:72%}.hot.hand{left:67%;top:66%;width:36px;height:36px}.teacher-tools{display:flex;justify-content:flex-end;padding:10px 16px 0}.teacher-tools button{border:0;background:#eaf0f5;color:var(--navy);border-radius:50%;width:36px;height:36px;cursor:pointer;font-size:17px}.modal-backdrop{position:fixed;inset:0;background:#10243888;display:flex;align-items:center;justify-content:center;padding:18px;z-index:1000}.modal{background:white;max-width:560px;width:100%;border-radius:16px;padding:22px;box-shadow:0 18px 60px #0004;max-height:85vh;overflow:auto}.modal h3{color:var(--navy);margin-top:0}.modal-close{float:right;border:0;border-radius:50%;width:32px;height:32px;cursor:pointer;background:#edf1f5}.audio-pending{padding:12px 14px;background:#fff8e8;border:1px solid #f0dfb6;border-radius:10px;color:#6f5a2b;font-size:13px}.closeup{height:380px;overflow:hidden;background:#dce5ed}.closeup img{width:100%;height:100%;object-fit:contain;display:block}
.note{padding:11px 15px;color:#68788c;font-size:13px}
.two{display:grid;grid-template-columns:1.35fr .85fr;gap:14px;margin-top:14px}.card{background:white;border:1px solid #e1e7ed;border-radius:14px;padding:17px}.card h3{margin:0 0 10px;color:var(--navy)}.instructions{background:#fff8e8;border-color:#f0dfb6;line-height:1.5}
.closeup{height:330px;overflow:hidden;position:relative;background:#dce5ed}.closeup img{width:100%;height:100%;object-fit:cover;object-position:77% 52%;transform:scale(1.75);transform-origin:77% 52%}
.dialogue{padding:17px}.line{display:flex;align-items:center;gap:10px;margin:13px 0}.speaker{background:#e5f2f2;color:#236e70;border-radius:9px;padding:7px 10px;font-weight:bold}.words{font-size:17px;line-height:1.4;flex:1}.words strong{color:var(--navy)}.smallbtn,.primary,.secondary{border:0;border-radius:10px;padding:10px 13px;font-weight:bold;cursor:pointer}.smallbtn,.secondary{background:#eaf0f5;color:var(--navy)}.primary{background:var(--teal);color:white}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.content{padding:18px}.content h3{color:var(--navy);margin-top:0}.content p{line-height:1.5}.letters{display:grid;grid-template-columns:repeat(7,1fr);gap:8px}.letter{border:1px solid #dce4ec;border-radius:10px;background:#fff;min-height:57px;font-size:21px;font-weight:bold;color:var(--navy);cursor:pointer}.letter small{display:block;font-size:11px;color:#77869a}
.quiz{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}.choice{padding:12px;border:1px solid #dfe6ed;background:white;border-radius:10px;font-weight:bold;cursor:pointer}.choice.sel{background:#e8f3f2;border-color:var(--teal)}.feedback{font-weight:bold;margin:12px 0;min-height:20px}
.hidden{display:none!important}input{padding:9px;border:1px solid #ccd6e0;border-radius:8px;max-width:100%}
@media(max-width:800px){.layout{grid-template-columns:1fr}aside{order:2}.two{grid-template-columns:1fr}main{padding:12px}.letters{grid-template-columns:repeat(5,1fr)}header{padding:0 12px}.brand{min-width:auto;font-size:15px}.head{padding-left:12px}.head strong{font-size:15px}.head span{font-size:11px}}

.game-tabs{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.game-tab,.secondary{border:1px solid #cbd5e1;background:#fff;color:#17324D;border-radius:12px;padding:10px 14px;font-weight:700;cursor:pointer}.game-tab.active{background:#17324D;color:#fff}.game-panel{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:20px;margin-top:14px}.game-link{display:inline-block;text-decoration:none;margin:10px 0}.sound-board{display:grid;grid-template-columns:1fr 2fr;gap:16px;margin:18px 0}.letter-bank{display:flex;flex-wrap:wrap;gap:8px;align-content:start;padding:12px;background:#f8fafc;border-radius:14px;min-height:100px}.sound-letter{border:1px solid #cbd5e1;border-radius:10px;background:#fff;padding:9px 12px;font-weight:800;cursor:grab;color:#17324D}.sound-letter.selected{outline:3px solid #D9A62E}.sound-categories{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.sound-category{border:2px dashed #cbd5e1;border-radius:14px;padding:12px;min-height:100px;background:#fbfaf7}.sound-category h4{margin:0 0 8px;color:#17324D}.sound-category small{display:block;color:#64748b;margin-bottom:8px}.sound-category.over{border-color:#2A7F83;background:#effafa}.sound-category .letter-bank{min-height:35px;padding:4px;background:transparent}.game-actions{display:flex;gap:10px;margin-top:14px}.careful-notes{margin-top:18px;padding:16px;background:#fff8e6;border-radius:12px}.odd-round{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}.odd-option{font-size:26px;font-weight:800;min-width:64px;padding:18px;border:2px solid #cbd5e1;border-radius:14px;background:#fff;cursor:pointer}.odd-option:disabled{opacity:.7;cursor:default}.dialogue-audio{margin:20px 0;padding:16px}.dialogue-audio .primary{margin:6px 0}.hidden{display:none!important}@media(max-width:700px){.sound-board{grid-template-columns:1fr}.sound-categories{grid-template-columns:1fr 1fr}}

/* Answer-check visual feedback */
.answer-correct{background:#e7f6eb!important;border:2px solid #2e8b57!important;color:#176b38!important}
.answer-wrong{background:#fdeaea!important;border:2px solid #c62828!important;color:#a61b1b!important}
.answer-mark{display:inline-flex;align-items:center;justify-content:center;font-weight:900;margin-left:8px;font-size:18px;min-width:22px}
.feedback.is-correct{color:#176b38!important}.feedback.is-wrong{color:#b42318!important}
.answer-key{display:block;color:#176b38;font-weight:700;font-size:13px;margin-top:4px}


/* Requested layout refinements — revision 4 */
.partb-instruction{font-weight:700;color:var(--navy);margin:0 0 10px;font-size:16px}
.dialogue-audio{margin:0 0 18px!important;padding:14px 16px!important}
.dialogue-audio h3{margin:0 0 8px;font-size:17px}
.dialogue-audio p{display:none}
.dialogue-audio audio{display:block;width:100%;max-width:680px}
.letter small{font-size:16px!important;line-height:1.2;font-weight:700;color:#53677c}
.partd-layout{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(280px,.88fr);gap:18px;align-items:start}
.notebook-list{position:relative;width:100%;aspect-ratio:979/512;background-image:var(--notebook-bg);background-size:100% 100%;background-repeat:no-repeat;min-height:320px;filter:drop-shadow(0 5px 12px #17324d22)}
.notebook-entry{position:absolute;left:11.8%;width:84%;height:11.6%;display:flex;align-items:center}
.notebook-entry input{width:100%;height:100%;max-width:none;border:0!important;background:transparent!important;border-radius:0!important;box-shadow:none!important;font-family:'Segoe Print','Comic Sans MS',cursive;font-size:clamp(16px,2vw,23px);color:#20364b;padding:0 8px}
.entry-1{top:35.4%}.entry-2{top:48.1%}.entry-3{top:60.8%}.entry-4{top:73.6%}.entry-5{top:86.3%}
.partd-right{display:flex;justify-content:flex-end;align-items:flex-start}
.partd-conversation{width:100%;max-width:440px;padding:18px}
.partd-conversation h3{margin-top:0}
#p6{border-radius:20px;padding:16px;background-image:linear-gradient(180deg,#17324d30,#17324d20),url("../assets/442821e9970e.png");background-size:cover;background-position:center;background-attachment:local}
#p6>.content{background:#fffdf3eF;border:1px solid #ffffffa8;border-radius:18px;padding:20px;box-shadow:0 8px 24px #17324d2b}
#p6 .game-panel{background:#fffdf2ed;border:1px solid #ffffffb5;box-shadow:0 5px 18px #17324d20}
#p6 .game-tabs{background:#ffffffd9;padding:8px;border-radius:14px}
@media(max-width:850px){.partd-layout{grid-template-columns:1fr}.partd-right{justify-content:stretch}.partd-conversation{max-width:none}.notebook-list{min-height:260px}}


/* Supabase login and account controls */
#loginScreen{position:fixed;inset:0;z-index:5000;background:linear-gradient(135deg,#17324d,#2a7f83);display:flex;align-items:center;justify-content:center;padding:20px}
#loginScreen.hidden{display:none!important}
.login-card{width:min(100%,420px);background:#fff;border-radius:20px;padding:30px;box-shadow:0 18px 60px #07182755}
.login-brand{font-weight:900;color:#17324d;font-size:23px;margin-bottom:8px}.login-brand b{color:#d9a62e}
.login-card h1{font-size:22px;color:#17324d;margin:12px 0 6px}.login-card p{color:#718096;line-height:1.45;font-size:14px}
.login-card label{display:block;color:#17324d;font-weight:700;font-size:13px;margin:16px 0 6px}
.login-card input{width:100%;max-width:none;padding:12px;border:1px solid #ccd6e0;border-radius:9px;font-size:15px}
.login-card button{width:100%;margin-top:18px;border:0;border-radius:10px;padding:13px;background:#2a7f83;color:white;font-weight:800;font-size:15px;cursor:pointer}
.login-card button:disabled{opacity:.6;cursor:wait}
#loginMessage{min-height:20px;color:#b42318;font-size:13px;margin-top:12px}
#accountControls{display:flex;align-items:center;gap:10px;color:white;font-size:12px;margin-left:auto}
#accountControls button{border:1px solid #ffffff66;border-radius:9px;background:#ffffff1c;color:white;padding:8px 10px;cursor:pointer;font-weight:700}
@media(max-width:600px){#accountControls span{display:none}.login-card{padding:24px}}


.student-divider{border:0;border-top:1px solid #e2e8f0;margin:28px 0 20px}
.student-part-label{display:inline-block;background:#e7f1ef;color:#17324d;border-radius:8px;padding:7px 12px;font-weight:800;margin:8px 0 14px}
.feedback-question{display:block;color:#17324d;font-weight:700;margin:18px 0 7px}
#homeworkFeedbackForm textarea{display:block;width:100%;box-sizing:border-box;border:1px solid #ccd6e0;border-radius:9px;padding:12px;font:inherit;resize:vertical;min-height:76px}
.feedback-optional-note{font-size:13px;color:#64748b;background:#f7f1e7;border-radius:9px;padding:12px;margin:18px 0}

/* Student course dashboard */
#studentDashboard{max-width:1180px;margin:26px auto 48px;padding:0 22px;color:#20364b}
.dashboard-welcome{background:linear-gradient(120deg,#17324d,#2a7f83);color:#fff;border-radius:20px;padding:26px 30px;margin-bottom:20px}
.dashboard-welcome .eyebrow{color:#dbe9e8;font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.dashboard-welcome h1{margin:8px 0;font-size:clamp(24px,4vw,34px)}
.dashboard-welcome p{margin:0;color:#e5eeee}
.dashboard-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px;margin:18px 0}
.dashboard-card{background:#fff;border:1px solid #e2e8f0;border-radius:17px;padding:20px;box-shadow:0 4px 16px #17324d0a}
.dashboard-card h2{font-size:18px;color:#17324d;margin:0 0 12px}
.dashboard-progress{height:11px;border-radius:20px;background:#e8edf1;overflow:hidden;margin:12px 0 8px}
.dashboard-progress span{display:block;height:100%;width:0;background:#2a7f83}
.dashboard-muted{color:#718096;font-size:13px;line-height:1.5}
.dashboard-homework{border:2px solid #d9a62e;background:#fffaf0}
.dashboard-homework .homework-kicker{color:#8a6819;font-size:11px;font-weight:900;text-transform:uppercase;letter-spacing:.08em}
.dashboard-homework h2{margin:7px 0}
.dashboard-button{border:0;border-radius:10px;background:#2a7f83;color:#fff;padding:11px 16px;font-weight:800;cursor:pointer;margin-top:12px}
.dashboard-button.secondary{background:#edf3f4;color:#17324d;border:1px solid #d6e2e4}
.dashboard-units{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.dashboard-unit{border:1px solid #dce4e9;border-radius:12px;padding:13px;background:#fbfcfd;min-height:92px}
.dashboard-unit.active{border:2px solid #2a7f83;background:#f0f8f6}
.dashboard-unit .unit-no{font-size:11px;color:#718096;font-weight:800;text-transform:uppercase}
.dashboard-unit strong{display:block;color:#17324d;margin:5px 0}
.dashboard-unit small{color:#718096}
.dashboard-calendar{min-height:155px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;background:#fbfcfd;border:1px dashed #cbd5e1;border-radius:12px;padding:18px}
.dashboard-calendar .calendar-icon{font-size:28px;margin-bottom:8px}
@media(max-width:760px){.dashboard-grid{grid-template-columns:1fr}.dashboard-units{grid-template-columns:repeat(2,minmax(0,1fr))}#studentDashboard{padding:0 14px}.dashboard-welcome{padding:22px}}


.line{display:flex;align-items:center;gap:10px}.line .words{flex:1}.line-audio{flex:0 0 auto;border:1px solid #d9a62e;background:#fff8e7;color:#17324d;border-radius:9px;padding:7px 10px;cursor:pointer;font-size:16px}.line-audio:hover{background:#fce9b8}.line-audio:focus-visible{outline:3px solid #2a7f83;outline-offset:2px}