:root{
  --teal:#1B7F79;
  --teal-tint:#E4F1EF;
  --coral:#E8724C;
  --coral-tint:#FCE9E1;
  --amber:#C88A2E;
  --amber-tint:#F7EDDA;
  --plum:#8B5E83;
  --plum-tint:#F1E6EF;
  --slate:#4A6C8C;
  --slate-tint:#E5EDF2;
  --rust:#A8503A;
  --rust-tint:#F3E3DE;
  --moss:#5F7A4F;
  --moss-tint:#E7EEE2;
  --ochre:#9C7A2A;
  --ochre-tint:#F1E9D5;
  --ink:#2C2A26;
  --ink-soft:#655F56;
  --ink-faint:#948E82;
  --cream:#FBF6EE;
  --cream-desktop:#E9E2D3;
  --paper:#FFFFFF;
  --line:#EAE2D4;
  --sage:#7C9A72;
  --sage-tint:#EAF1E6;
  --good:#4E6E46;
  --shadow:0 8px 24px rgba(60,45,20,0.08);
  --shadow-soft:0 2px 8px rgba(60,45,20,0.06);
  --radius-lg:26px;
  --radius-md:18px;
  --radius-sm:12px;
  --serif: "Iowan Old Style", Palatino, "Palatino Linotype", Georgia, "Times New Roman", serif;
}
*{box-sizing:border-box;}
html{font-size:19px;-webkit-text-size-adjust:100%;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--cream-desktop);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  line-height:1.5;
}
h1,h2,h3,p,ul,textarea{margin:0;}
button{font-family:inherit;}

.app-shell{
  max-width:480px;
  margin:0 auto;
  min-height:100vh;
  background:var(--cream);
  display:flex;
  flex-direction:column;
  position:relative;
  overflow-x:hidden;
}
.app-main{
  flex:1 1 auto;
  padding:28px 20px 40px;
  overflow-x:hidden;
}
@media (min-width:481px){
  .app-shell{box-shadow:0 0 0 1px rgba(60,45,20,0.05), 0 20px 60px rgba(40,30,10,0.12);}
}

.screen{display:none;}
.screen.active{display:block;animation:fadein .2s ease;}
@keyframes fadein{from{opacity:0;transform:translateY(4px);}to{opacity:1;transform:none;}}

/* ---------- shared bits ---------- */
.wordmark{display:flex;align-items:center;gap:10px;background:none;border:none;padding:0;cursor:pointer;font:inherit;}
.wordmark .mark{width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--teal),#25a89e);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem;flex-shrink:0;}
.wordmark .name{font-weight:700;font-size:1.05rem;color:var(--ink);}

.topbar{display:flex;align-items:center;gap:12px;margin-bottom:24px;min-height:38px;}
.topbar-home{margin-bottom:20px;}

/* ---------- desktop chrome (hidden below 1100px) ---------- */
.topbar-desk{
  display:none;
  align-items:center;
  gap:1.5rem;
  padding-bottom:1.3rem;
  margin-bottom:1.6rem;
  border-bottom:1px solid var(--line);
}
.topbar-desk .tb-center{
  flex:1 1 auto;
  text-align:center;
  font-size:0.86rem;
  font-weight:600;
  color:var(--ink-soft);
}
.topbar-desk .tb-dots{display:inline-flex;gap:4px;margin-left:10px;vertical-align:middle;}
.topbar-desk .tb-dots span{width:6px;height:6px;border-radius:50%;background:#E3DCCB;display:inline-block;}
.topbar-desk .tb-dots span.done{background:var(--sage);}
.topbar-desk .tb-right{display:flex;align-items:center;gap:0.9rem;flex-shrink:0;}
.readiness-pill{
  display:flex;align-items:center;gap:6px;
  font-size:0.78rem;font-weight:800;color:var(--good);
  background:var(--sage-tint);border-radius:100px;padding:0.4rem 0.85rem;white-space:nowrap;
}
.readiness-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--good);}
.readiness-pill.rp-amber{color:#8A6220;background:var(--amber-tint);}
.readiness-pill.rp-amber .dot{background:var(--amber);}
.readiness-pill.rp-neutral{color:var(--ink-soft);background:var(--line);}
.readiness-pill.rp-neutral .dot{background:var(--ink-faint);}
.btn-primary-desk{
  background:var(--teal);color:#fff;border:none;border-radius:14px;
  padding:0.7rem 1.3rem;font-size:0.92rem;font-weight:700;cursor:pointer;
  box-shadow:0 8px 18px rgba(27,127,121,0.28);white-space:nowrap;
}
.btn-primary-desk:hover{filter:brightness(1.04);}
.btn-primary-desk:disabled{opacity:0.5;cursor:default;box-shadow:none;}
.back-btn{width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:var(--paper);display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--ink-soft);flex-shrink:0;}
.back-btn svg{width:19px;height:19px;}
.topbar h2{font-size:1.12rem;font-weight:700;color:var(--ink);}
.crumb{font-size:0.82rem;color:var(--ink-faint);font-weight:600;letter-spacing:.2px;}
.timer-display{margin-left:auto;font-size:0.85rem;font-weight:700;color:var(--ink-soft);}

.btn-primary{
  display:block;width:100%;text-align:center;background:var(--teal);color:#fff;border:none;
  border-radius:18px;padding:1.05rem 1.1rem;font-size:1.05rem;font-weight:700;cursor:pointer;
  box-shadow:0 10px 22px rgba(27,127,121,0.28);min-height:44px;
}
.btn-primary:active{transform:translateY(1px);}
[hidden]{display:none !important;}
.btn-secondary{
  display:block;width:100%;text-align:center;background:var(--paper);color:var(--ink);border:1.5px solid var(--line);
  border-radius:16px;padding:0.85rem 1rem;font-size:0.95rem;font-weight:600;cursor:pointer;min-height:44px;
}
.btn-secondary:active{background:#F5EEE1;}
.btn-quiet{display:block;width:100%;background:none;border:none;color:var(--ink-soft);font-size:0.88rem;font-weight:600;
  text-align:center;padding:0.9rem 0;cursor:pointer;text-decoration:underline;text-underline-offset:3px;min-height:44px;}

.card{background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:1.2rem;}

.badge-count{background:var(--coral-tint);color:var(--coral);font-size:0.72rem;font-weight:800;padding:0.15rem 0.5rem;border-radius:100px;}

.section-title{font-size:0.76rem;font-weight:800;text-transform:uppercase;letter-spacing:.4px;color:var(--ink-faint);margin:1.5rem 0 0.7rem;}
.sample-line{text-align:center;font-size:0.68rem;color:var(--ink-faint);margin-top:1rem;font-style:italic;line-height:1.5;}
.sample-line.small{margin-top:0.85rem;}

.bar-track{position:relative;height:12px;background:#EFE8D9;border-radius:100px;overflow:visible;}
.bar-track.big-bar{margin-bottom:1.6rem;}
.bar-fill{height:100%;border-radius:100px;background:linear-gradient(90deg,#7C9A72,#1B7F79);width:0%;transition:width .5s ease;}
.bar-marker{position:absolute;top:-5px;width:2px;height:22px;background:var(--ink-faint);opacity:.55;}
.bar-marker .lbl{position:absolute;top:24px;left:50%;transform:translateX(-50%);font-size:0.6rem;color:var(--ink-faint);font-weight:700;white-space:nowrap;}

/* ---------- bottom nav ---------- */
.bottom-nav{display:flex;justify-content:space-around;align-items:center;padding:10px 10px calc(10px + env(safe-area-inset-bottom));
  background:rgba(251,246,238,0.94);backdrop-filter:blur(8px);border-top:1px solid var(--line);flex-shrink:0;position:sticky;bottom:0;}
.nav-btn{background:none;border:none;cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:4px;color:var(--ink-faint);
  font-size:0.66rem;font-weight:700;padding:6px 10px;border-radius:12px;min-height:44px;min-width:44px;}
.nav-btn svg{width:22px;height:22px;}
.nav-btn.active{color:var(--teal);}

/* ================= DATE QUESTION ================= */
.date-wrap{padding-top:2.5rem;text-align:center;}
.date-eyebrow{font-size:0.8rem;font-weight:800;color:var(--teal);text-transform:uppercase;letter-spacing:.5px;margin-bottom:1.4rem;}
.date-h1{font-size:1.5rem;font-weight:800;line-height:1.35;margin-bottom:0.7rem;}
.date-sub{font-size:0.92rem;color:var(--ink-soft);line-height:1.55;margin-bottom:1.8rem;}
.date-options{display:flex;flex-direction:column;gap:0.7rem;margin-bottom:0.5rem;}
.date-options.inline{margin-top:0.9rem;}
.date-options[hidden]{display:none;}
.date-option-btn{
  display:block;width:100%;background:var(--paper);border:1.5px solid var(--line);border-radius:16px;
  padding:0.95rem 1rem;font-size:1rem;font-weight:700;color:var(--ink);cursor:pointer;min-height:44px;
}
.date-option-btn:active{border-color:var(--teal);background:var(--teal-tint);}

/* ================= HOME ================= */
.greeting{font-size:0.82rem;color:var(--ink-faint);font-weight:700;margin-bottom:6px;}
.status-line{font-size:1.35rem;font-weight:800;line-height:1.35;color:var(--ink);margin-bottom:1.5rem;}
.session-preview{font-size:0.82rem;color:var(--ink-faint);font-weight:600;text-align:center;margin-top:0.7rem;}
.readiness-block{margin-top:1.7rem;background:var(--paper);border-radius:var(--radius-md);padding:1.15rem 1.15rem 1.05rem;box-shadow:var(--shadow-soft);}
.readiness-block p{font-size:0.9rem;color:var(--ink-soft);line-height:1.5;margin-bottom:0.85rem;}
.readiness-block p strong{color:var(--ink);font-weight:700;}
.secondary-row{margin-top:1.1rem;}
.secondary-row .btn-secondary{display:flex;align-items:center;justify-content:center;gap:8px;}

.home-inner{display:block;}

.areas-list{display:flex;flex-direction:column;gap:0.85rem;}
.area-row{cursor:pointer;padding:0.15rem 0;background:none;border:none;text-align:left;width:100%;min-height:44px;}
.area-icon{display:none;}
.area-top{display:flex;justify-content:space-between;align-items:baseline;gap:0.5rem;margin-bottom:0.32rem;}
.area-name{font-size:0.86rem;font-weight:700;color:var(--ink);}
.area-frac{font-size:0.74rem;color:var(--ink-faint);white-space:nowrap;font-weight:600;}
.mini-track{height:8px;background:#EFE8D9;border-radius:100px;overflow:hidden;}
.mini-fill{height:100%;border-radius:100px;}

.home-footer{text-align:center;margin-top:2rem;}
.home-footer a,.home-footer-link{font-size:17px;color:var(--ink-faint);text-decoration:underline;}
.home-footer-link{background:none;border:none;font-family:inherit;cursor:pointer;padding:0.5rem;min-height:44px;}

/* ================= COURSE ================= */
.course-intro{font-size:0.88rem;color:var(--ink-soft);line-height:1.5;margin-bottom:1.3rem;}
.module-card{display:block;width:100%;text-align:left;background:var(--paper);border:none;border-radius:var(--radius-md);
  padding:1.1rem;margin-bottom:0.85rem;box-shadow:var(--shadow-soft);cursor:pointer;}
.module-top{display:flex;align-items:flex-start;gap:0.85rem;margin-bottom:0.85rem;}
.module-icon{width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:800;font-size:1.05rem;color:#fff;}
.module-name{font-size:0.95rem;font-weight:700;line-height:1.32;color:var(--ink);}
.module-weight{font-size:0.72rem;color:var(--ink-faint);font-weight:600;margin-top:3px;}
.module-progress-row{display:flex;align-items:center;gap:0.6rem;}
.module-progress-row .mini-track{flex:1;}
.module-frac{font-size:0.74rem;font-weight:700;color:var(--ink-soft);white-space:nowrap;}

/* ================= TOPICS ================= */
.topic-row{display:flex;align-items:center;justify-content:space-between;gap:0.7rem;background:var(--paper);border-radius:16px;
  padding:0.9rem 1rem;margin-bottom:0.55rem;box-shadow:var(--shadow-soft);cursor:pointer;border:1.5px solid transparent;min-height:44px;}
.topic-row .t-name{font-size:0.9rem;font-weight:600;color:var(--ink);line-height:1.35;}
.topic-row .t-ref{font-size:0.7rem;color:var(--ink-faint);font-weight:600;margin-top:2px;}
.status-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0;}
.status-not{background:#E3DCCB;}
.status-progress{background:var(--amber);}
.status-solid{background:var(--sage);}
.status-tag{font-size:0.68rem;font-weight:700;color:var(--ink-faint);display:flex;align-items:center;gap:5px;white-space:nowrap;}

/* ================= TOPIC PAGE ================= */
.topic-h1{font-size:1.28rem;font-weight:800;line-height:1.3;margin-bottom:1rem;}
.tabs{display:flex;gap:0.3rem;margin-bottom:1.2rem;background:#F0E9DA;padding:0.28rem;border-radius:13px;}
.tab-btn{flex:1;border:none;background:transparent;padding:0.5rem 0.12rem;border-radius:10px;font-size:0.92rem;font-weight:800;
  color:var(--ink-soft);cursor:pointer;min-height:44px;}
.tab-btn.active{background:var(--paper);color:var(--teal);box-shadow:0 1px 3px rgba(0,0,0,0.08);}
.tab-panel{display:none;}
.tab-panel.active{display:block;}
.overview-text{font-size:1.02rem;line-height:1.55;color:var(--ink-soft);margin-bottom:1rem;}
.key-points{list-style:none;display:flex;flex-direction:column;gap:0.6rem;padding:0;margin-bottom:1rem;}
.key-points li{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:0.75rem 0.9rem;font-size:1.02rem;line-height:1.5;color:var(--ink);}
.manual-details{margin-top:0.3rem;}
.manual-details summary{cursor:pointer;font-size:0.82rem;font-weight:700;color:var(--ink-soft);padding:0.5rem 0;}
.manual-list{list-style:none;padding:0;margin:0.4rem 0 0;display:flex;flex-direction:column;gap:0.35rem;}
.manual-list li{font-size:0.78rem;color:var(--ink-faint);line-height:1.5;padding-left:0.9rem;position:relative;}
.manual-list li::before{content:"–";position:absolute;left:0;}

.session-preview-card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);padding:1.2rem;text-align:center;}
.spc-big{font-size:1.02rem;font-weight:800;margin-bottom:0.3rem;}
.spc-meta{font-size:0.8rem;color:var(--ink-soft);margin-bottom:1rem;}

textarea{width:100%;min-height:180px;border:1px solid var(--line);border-radius:12px;padding:0.85rem;font-size:0.92rem;
  font-family:inherit;resize:vertical;background:var(--paper);color:var(--ink);}
.notes-hint{font-size:0.74rem;color:var(--ink-faint);margin-top:0.5rem;}

/* ================= MANUAL READING ================= */
#manualReadBtn{margin-bottom:0.9rem;}
.manual-content{font-size:1.05rem;line-height:1.7;color:var(--ink);max-width:34rem;margin:0 auto;}
.manual-content h3{font-size:1.15rem;font-weight:800;color:var(--ink);margin:1.6rem 0 0.6rem;line-height:1.35;}
.manual-content h3:first-child{margin-top:0;}
.manual-content h4{font-size:1.02rem;font-weight:700;color:var(--ink-soft);margin:1.3rem 0 0.5rem;line-height:1.35;}
.manual-content p{margin:0 0 1rem;}
.manual-content ul,.manual-content ol{margin:0 0 1rem;padding-left:1.3rem;}
.manual-content li{margin-bottom:0.4rem;}
.manual-content strong{color:var(--ink);font-weight:700;}
.manual-content blockquote{margin:0 0 1.1rem;padding:0.85rem 1rem;border-left:4px solid var(--line);background:var(--paper);border-radius:8px;font-size:1rem;line-height:1.6;color:var(--ink-soft);}
.manual-keynote{background:var(--amber-tint);border-left:4px solid var(--amber);border-radius:8px;padding:0.85rem 1rem;margin:0 0 1.1rem;font-size:1rem;line-height:1.6;color:var(--ink);}
.manual-keynote strong{color:#8A6220;}
.manual-unreadable{color:var(--ink-faint);font-style:italic;}

/* ---- desk layout for the manual screen (two-pane, desktop only) ---- */
.desk-grid{display:block;}
.manual-pane{display:block;}
.provenance,.chapter-eyebrow,.manual-footer{display:none;}
.active-pane{display:none;}

.provenance{font-family:var(--serif);font-style:italic;font-size:0.78rem;color:var(--ink-faint);margin-bottom:0.9rem;}
.chapter-eyebrow{font-size:0.72rem;font-weight:800;letter-spacing:0.08em;text-transform:uppercase;color:var(--amber);margin-bottom:0.6rem;}
.chapter-h1{margin-bottom:1.5rem;}
.manual-footer{margin-top:2.4rem;padding-top:1.1rem;border-top:1px solid var(--line);font-family:var(--serif);font-style:italic;font-size:0.78rem;color:var(--ink-faint);text-align:right;}

.check-card{background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);padding:1.4rem 1.5rem 1.6rem;}
.check-head{font-size:0.94rem;font-weight:800;color:var(--ink);margin-bottom:1rem;}
.rail-gap{margin-top:0.9rem;}

.study-card-desk{background:var(--cream);border-radius:var(--radius-md);padding:1.3rem 1.3rem 1.2rem;margin-bottom:1.1rem;}
.study-card-desk .kicker{font-size:0.68rem;font-weight:800;letter-spacing:0.05em;text-transform:uppercase;color:var(--amber);margin-bottom:0.6rem;}
.study-card-desk .prompt{font-size:1.02rem;line-height:1.55;color:var(--ink);font-weight:500;}

/* ================= STUDY BUDDY (desktop only — lives in .active-pane / a floating drawer) ================= */
.buddy-toggle-bar{
  display:flex;align-items:center;gap:0.7rem;width:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-md);
  box-shadow:var(--shadow-soft);padding:0.9rem 1.1rem;cursor:pointer;text-align:left;
}
.buddy-toggle-bar:hover{border-color:var(--teal);}
.buddy-toggle-bar[hidden]{display:none;}
.buddy-toggle-text{flex:1;font-size:0.86rem;font-weight:700;color:var(--ink-soft);}
.buddy-toggle-chevron{color:var(--ink-faint);font-size:1rem;}

.buddy-avatar{
  width:34px;height:34px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,var(--plum),#a878a0);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:0.95rem;
}

.buddy-panel{
  background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow-soft);
  padding:1.4rem 1.5rem 1.5rem;display:flex;flex-direction:column;
}
.buddy-panel[hidden]{display:none;}
.buddy-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.1rem;}
.buddy-head-left{display:flex;align-items:center;gap:0.7rem;}
.bh-title{font-size:0.94rem;font-weight:800;color:var(--ink);}
.bh-sub{font-size:0.74rem;font-weight:600;color:var(--ink-faint);margin-top:2px;}
.buddy-close{background:none;border:none;color:var(--ink-faint);font-size:1.3rem;line-height:1;cursor:pointer;padding:2px 6px;flex-shrink:0;}
.chat-thread{display:flex;flex-direction:column;gap:0.75rem;margin-bottom:1.1rem;max-height:320px;overflow-y:auto;}
.msg{max-width:88%;padding:0.8rem 1rem;border-radius:16px;font-size:0.93rem;line-height:1.52;white-space:pre-wrap;word-wrap:break-word;}
.msg-user{align-self:flex-end;background:var(--teal-tint);color:var(--ink);border-bottom-right-radius:4px;}
.msg-buddy{align-self:flex-start;background:var(--cream);color:var(--ink);border-bottom-left-radius:4px;}
.msg-buddy.msg-pending{opacity:0.6;font-style:italic;}
.msg-buddy .cite{display:inline;font-weight:700;color:var(--teal);}
.buddy-composer{
  display:flex;gap:0.6rem;align-items:flex-end;
  background:var(--cream);border:1.5px solid var(--line);border-radius:14px;
  padding:0.6rem 0.7rem 0.6rem 1rem;flex-shrink:0;
}
.buddy-input{flex:1 1 auto;resize:none;border:none;background:none;font:inherit;font-size:0.88rem;color:var(--ink);padding:0.25rem 0;max-height:90px;}
.buddy-input:focus{outline:none;}
.buddy-composer-actions{display:flex;gap:6px;flex-shrink:0;}
.buddy-mic-btn,.buddy-send-btn{
  border:none;border-radius:10px;cursor:pointer;font:inherit;font-size:0.95rem;font-weight:700;
  width:36px;height:36px;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.buddy-send-btn{background:var(--teal);color:#fff;}
.buddy-send-btn:disabled{opacity:0.6;cursor:default;}
.buddy-mic-btn{background:var(--paper);border:1.5px solid var(--line);color:var(--ink-soft);}
.buddy-mic-btn.buddy-mic-active{background:var(--coral);color:#fff;border-color:transparent;}

/* ---- "Explain this" link on wrong MCQs (session + mock) — desktop only ---- */
.explain-link{
  display:none;background:none;border:none;padding:0;margin-top:0.8rem;
  font-size:0.82rem;font-weight:700;color:var(--teal);cursor:pointer;
}
.explain-link:hover{text-decoration:underline;}

/* ---- free recall card ---- */
.recall-instruction{font-size:0.86rem;color:var(--ink-soft);line-height:1.5;margin-bottom:0.9rem;}
.recall-input-row{display:flex;gap:0.6rem;align-items:flex-start;margin-bottom:0.9rem;}
.recall-input-row textarea{flex:1;min-height:90px;}
.recall-mic-btn{
  width:40px;height:40px;border-radius:10px;border:1.5px solid var(--line);background:var(--paper);
  color:var(--ink-soft);cursor:pointer;flex-shrink:0;font-size:0.95rem;
}
.recall-mic-btn.buddy-mic-active{background:var(--coral);color:#fff;border-color:transparent;}
.recall-reply{margin-top:1rem;background:var(--cream);border-radius:14px;padding:1rem 1.1rem;}
.recall-reply .rr-section{margin-bottom:0.8rem;}
.recall-reply .rr-section:last-of-type{margin-bottom:0;}
.recall-reply .rr-label{display:block;font-size:0.68rem;font-weight:800;letter-spacing:0.05em;text-transform:uppercase;margin-bottom:0.35rem;}
.recall-reply .rr-got .rr-label{color:var(--good);}
.recall-reply .rr-missed .rr-label{color:#8A6220;}
.recall-reply p{font-size:0.88rem;line-height:1.5;color:var(--ink);white-space:pre-wrap;margin:0;}
.recall-reply .recall-fail{font-size:0.86rem;color:var(--ink-soft);font-style:italic;}
.recall-dismiss{margin-top:0.9rem;}

/* ================= SESSION ================= */
.progress-dots{display:flex;gap:5px;justify-content:center;margin-bottom:1.3rem;flex-wrap:wrap;}
.progress-dots span{width:7px;height:7px;border-radius:50%;background:#E3DCCB;}
.progress-dots span.done{background:var(--sage);}
.progress-dots span.current{background:var(--teal);width:9px;height:9px;}

.study-card{background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:1.6rem 1.3rem;min-height:210px;
  display:flex;flex-direction:column;justify-content:center;}
.kicker{font-size:0.7rem;font-weight:800;letter-spacing:.4px;text-transform:uppercase;color:var(--amber);margin-bottom:0.8rem;}
.prompt{font-size:1.02rem;line-height:1.55;color:var(--ink);font-weight:500;transition:font-size .2s ease,color .2s ease;}
.study-card.revealed .prompt{font-size:0.84rem;color:var(--ink-soft);font-weight:600;margin-bottom:0.9rem;padding-bottom:0.9rem;
  border-bottom:1px solid var(--line);}
.answer{font-size:1.02rem;line-height:1.55;color:var(--teal);font-weight:700;}

.conf-prompt{text-align:center;font-size:0.82rem;color:var(--ink-soft);margin:1rem 0 0.7rem;}
.confidence-row{display:flex;gap:0.5rem;}
.conf-btn{flex:1;background:var(--paper);border:1.5px solid var(--line);border-radius:14px;padding:0.85rem 0.2rem;text-align:center;
  font-size:1.02rem;font-weight:700;color:var(--ink-soft);cursor:pointer;min-height:44px;}
.conf-btn.picked{border-color:var(--teal);color:var(--teal);background:var(--teal-tint);}
.chosen-tag{text-align:center;font-size:0.76rem;color:var(--teal);font-weight:700;margin:0.9rem 0 0;}

.card-reveal-btn{margin-top:1.3rem;}

.grade-row{display:flex;gap:0.5rem;margin-top:1.3rem;}
.grade-row.answered{pointer-events:none;opacity:0.85;}
.grade-btn{flex:1;border:none;border-radius:16px;padding:0.9rem 0.4rem;text-align:center;font-size:0.92rem;line-height:1.28;
  font-weight:800;cursor:pointer;min-height:52px;display:flex;align-items:center;justify-content:center;}
.grade-btn.picked{box-shadow:inset 0 0 0 2px rgba(0,0,0,0.12);}
.grade-knew{background:var(--sage-tint);color:var(--good);}
.grade-hard{background:var(--teal-tint);color:var(--teal);}
.grade-forgot{background:var(--amber-tint);color:#8A6220;}
.grade-hint{text-align:center;font-size:0.72rem;color:var(--ink-faint);margin-top:0.7rem;}

/* ---- memory hooks (cards + MCQs + escalation card) ---- */
.item-hook-display{font-size:0.9rem;font-style:italic;color:var(--ink-soft);margin-top:1rem;line-height:1.5;}
.hook-row{margin-top:1rem;}
.hook-label{display:block;font-size:0.8rem;color:var(--ink-soft);margin-bottom:0.5rem;line-height:1.42;}
.hook-input-row{display:flex;gap:0.5rem;}
.hook-input{flex:1;border:1px solid var(--line);border-radius:12px;padding:0.7rem 0.85rem;font-size:0.94rem;
  font-family:inherit;background:var(--paper);color:var(--ink);min-height:44px;}
.hook-save-btn{width:auto;padding:0 1.1rem;flex-shrink:0;text-decoration:none;}

.mcq-question{font-size:1rem;line-height:1.5;color:var(--ink);font-weight:600;margin-bottom:1.1rem;}
.mcq-options{display:flex;flex-direction:column;gap:0.6rem;margin-top:1rem;}
.mcq-option{display:flex;align-items:flex-start;gap:0.7rem;background:var(--paper);border:1.5px solid var(--line);border-radius:16px;
  padding:0.85rem 0.9rem;cursor:pointer;font-size:1.02rem;line-height:1.42;color:var(--ink);min-height:44px;}
.mcq-option .letter{width:26px;height:26px;border-radius:8px;background:var(--cream);border:1.5px solid var(--line);
  display:flex;align-items:center;justify-content:center;font-size:0.74rem;font-weight:800;color:var(--ink-soft);flex-shrink:0;}
.mcq-option.selected-correct{border-color:var(--sage);background:var(--sage-tint);}
.mcq-option.selected-correct .letter{background:var(--sage);border-color:var(--sage);color:#fff;}
.mcq-option.selected-wrong{border-color:var(--amber);background:var(--amber-tint);}
.mcq-option.selected-wrong .letter{background:var(--amber);border-color:var(--amber);color:#fff;}
.mcq-option[disabled],.mcq-option.is-disabled{cursor:default;}
.mcq-options.locked .mcq-option{opacity:0.55;pointer-events:none;}

.mcq-explain{margin-top:1.1rem;background:var(--paper);border-radius:16px;padding:1.05rem;box-shadow:var(--shadow-soft);}
.verdict{font-size:0.86rem;font-weight:800;margin-bottom:0.5rem;}
.verdict.right{color:var(--good);}
.verdict.wrong{color:#8A6220;}
.mcq-explain p{font-size:0.86rem;line-height:1.52;color:var(--ink-soft);}

/* ================= SESSION DONE ================= */
.done-wrap{text-align:center;padding-top:2.4rem;}
.done-badge{width:84px;height:84px;margin:0 auto 1.4rem;border-radius:50%;background:var(--sage-tint);display:flex;align-items:center;justify-content:center;}
.done-badge svg{width:40px;height:40px;}
.done-headline{font-size:1.25rem;font-weight:800;color:var(--ink);line-height:1.4;margin-bottom:0.6rem;}
.done-sub{font-size:0.9rem;color:var(--ink-soft);line-height:1.5;margin-bottom:1.8rem;}

/* ---- 3-strikes escalation card (session-done screen; calm, no red/guilt) ---- */
.escalation-card{
  background:var(--paper);border-radius:var(--radius-md);box-shadow:var(--shadow-soft);
  padding:1.3rem 1.4rem 1.4rem;margin-bottom:1.4rem;text-align:left;
}
.esc-head{font-size:0.88rem;font-weight:800;color:var(--ink);margin-bottom:0.6rem;}
.esc-item{font-size:0.94rem;color:var(--ink-soft);line-height:1.5;margin-bottom:1rem;font-style:italic;}
.esc-offers{display:flex;flex-direction:column;gap:0.6rem;}
.esc-offer{text-align:left;}
#escBuddyBtn{display:none;}

/* ================= MOCK ================= */
.mock-hero{background:var(--paper);border-radius:var(--radius-lg);padding:1.25rem;box-shadow:var(--shadow-soft);margin-bottom:0.9rem;}
.mock-hero p{font-size:0.88rem;color:var(--ink-soft);line-height:1.55;}
.mock-option-card{background:var(--paper);border-radius:18px;padding:1.05rem 1.1rem;box-shadow:var(--shadow-soft);margin-bottom:0.75rem;}
.mock-option-card h4{font-size:0.92rem;font-weight:700;color:var(--ink);margin-bottom:0.3rem;}
.mock-option-card .meta{font-size:0.76rem;color:var(--ink-faint);font-weight:600;margin-bottom:0.9rem;}
.timer-toggle{display:flex;align-items:center;gap:0.5rem;font-size:0.8rem;color:var(--ink-soft);margin-bottom:0.9rem;}
.timer-toggle input{width:18px;height:18px;}

.attempt-row{background:var(--paper);border-radius:14px;padding:0.85rem 1rem;margin-bottom:0.6rem;box-shadow:var(--shadow-soft);}
.attempt-top{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:0.5rem;font-size:0.74rem;color:var(--ink-faint);}
.attempt-score{font-weight:800;font-size:0.86rem;margin-bottom:0.5rem;}
.area-bars-mini{display:flex;gap:0.3rem;height:7px;}
.area-bars-mini span{flex:1;background:#EFE8D9;border-radius:4px;overflow:hidden;display:block;}
.area-bars-mini span i{display:block;height:100%;border-radius:4px;}

.mock-result-bar-row{margin-bottom:0.9rem;}
.mock-result-bar-row .label-row{display:flex;justify-content:space-between;margin-bottom:0.35rem;font-size:0.82rem;}
.mock-result-bar-row .label-row span:first-child{font-weight:700;color:var(--ink);}
.mock-result-bar-row .label-row span:last-child{color:var(--ink-faint);font-weight:600;}
.weak-item{background:var(--paper);border-radius:14px;padding:0.75rem 0.95rem;margin-bottom:0.5rem;box-shadow:var(--shadow-soft);}
.weak-item .w-name{display:block;font-size:0.9rem;font-weight:600;color:var(--ink);line-height:1.4;}
.weak-item .tag{display:block;font-size:0.72rem;font-weight:700;color:var(--amber);margin-top:0.35rem;}

/* ================= PROGRESS ================= */
.progress-headline{font-size:0.9rem;color:var(--ink-soft);line-height:1.55;margin-bottom:1rem;}
.sessions-left{text-align:center;font-size:0.76rem;color:var(--ink-faint);font-weight:600;margin-top:1.3rem;}

@media (max-width:390px){
  .app-main{padding:24px 16px 32px;}
}

/* ================= FIVE-SCREEN INTRO OVERLAY ================= */
.intro-overlay{
  position:fixed;inset:0;z-index:3000;
  background:rgba(44,42,38,0.28);
  display:flex;align-items:center;justify-content:center;
  padding:1.6rem 1.1rem;
}
.intro-overlay[hidden]{display:none;}
.intro-card{
  background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow);
  max-width:560px;width:100%;max-height:88vh;overflow-y:auto;
  padding:2.2rem 1.7rem 1.7rem;display:flex;flex-direction:column;gap:1.5rem;
}
.intro-dots{display:flex;gap:6px;justify-content:center;}
.intro-dots span{width:7px;height:7px;border-radius:50%;background:#E3DCCB;display:inline-block;}
.intro-dots span.current{background:var(--teal);width:9px;height:9px;}
.intro-dots span.done{background:var(--sage);}
.intro-heading{font-size:1.25rem;font-weight:800;line-height:1.4;color:var(--ink);margin-bottom:0.9rem;}
.intro-text{font-size:1rem;line-height:1.6;color:var(--ink-soft);}
.why-panel{margin-top:1.1rem;}
.why-panel summary{
  cursor:pointer;list-style:none;display:flex;align-items:center;gap:0.4rem;
  font-size:0.86rem;font-weight:700;color:var(--ink-soft);padding:0.3rem 0;user-select:none;
}
.why-panel summary::-webkit-details-marker{display:none;}
.why-panel summary:hover{color:var(--ink);}
.why-panel summary:focus-visible{outline:2px solid var(--teal);outline-offset:3px;border-radius:4px;}
.why-panel-chevron{flex-shrink:0;transition:transform 0.15s ease;}
.why-panel[open] .why-panel-chevron{transform:rotate(180deg);}
.why-panel-content{margin-top:0.7rem;}
.why-panel-text{font-size:1rem;line-height:1.6;color:var(--ink-soft);margin:0;}
.why-panel-sources{font-size:0.9rem;line-height:1.5;color:var(--ink-faint);margin:0.7rem 0 0;}
.why-panel-sources a{color:var(--teal);text-decoration:underline;}
.intro-footer{display:flex;flex-direction:column;gap:1rem;}
.intro-optout{display:flex;align-items:center;gap:0.6rem;cursor:pointer;}
.intro-optout input{width:18px;height:18px;flex-shrink:0;accent-color:var(--teal);}
.intro-optout span{font-size:1rem;line-height:1.4;color:var(--ink-soft);font-weight:600;}
.intro-nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;}
.intro-nav-buttons{display:flex;gap:0.7rem;}
.intro-skip{width:auto;padding:0.6rem 0.2rem;text-align:left;}
.intro-back{width:auto;padding:0.85rem 1.1rem;}
.intro-next{width:auto;padding:0.85rem 1.5rem;}
@media (max-width:480px){
  .intro-nav{flex-direction:column;align-items:stretch;gap:0.9rem;}
  .intro-nav-buttons{justify-content:space-between;}
}
@media (min-width:1100px){
  .intro-card{padding:3rem 3rem 2.4rem;}
  .intro-heading{font-size:1.55rem;}
  .intro-text{font-size:1.08rem;}
}

/* ================= 701–1099px: wider single column ================= */
@media (min-width:701px){
  .app-shell{max-width:640px;}
}

/* ================= >=1100px: the desk ================= */
@media (min-width:1100px){
  body{padding:2.5rem 1.5rem 4rem;}
  .app-shell{
    max-width:1400px;
    min-height:auto;
    border-radius:var(--radius-lg);
    box-shadow:0 0 0 1px rgba(60,45,20,0.05), 0 24px 60px rgba(40,30,10,0.12);
  }
  .app-main{padding:0 2.6rem 2.6rem;}

  .topbar-desk{display:flex;}
  .topbar-home{display:none;}

  .bottom-nav{position:static;background:none;backdrop-filter:none;border-top:1px solid var(--line);margin-top:1rem;}

  /* generic centred reading column for screens not given a bespoke desk layout */
  #screen-course,#screen-topics,#screen-topic,#screen-progress,#screen-date,
  #screen-session,#screen-mock,#screen-mock-session,#screen-mock-results,#screen-session-done{
    max-width:720px;
    margin:0 auto;
  }

  /* ---- home: centred hero + area chip grid ---- */
  .home-inner{max-width:640px;margin:0 auto 2.6rem;text-align:center;}
  .home-inner .readiness-block{text-align:left;}
  #homeContinueBtn{
    display:inline-block;width:auto;
    padding:1.05rem 2.6rem;font-size:1.1rem;border-radius:18px;
    box-shadow:0 10px 24px rgba(27,127,121,0.28);
  }
  #reviewMissesBtn{display:inline-flex;width:auto;padding:0.75rem 1.4rem;}
  .home-areas-title{max-width:1240px;margin-left:auto;margin-right:auto;text-align:left;}
  #homeAreasList{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:0.9rem;
    max-width:1240px;
    margin:0 auto;
  }
  #homeAreasList .area-row{
    background:var(--paper);border-radius:var(--radius-md);box-shadow:var(--shadow-soft);
    padding:1.1rem 1rem;
  }
  #homeAreasList .area-icon{
    display:flex;width:36px;height:36px;border-radius:10px;align-items:center;justify-content:center;
    color:#fff;font-weight:800;font-size:0.9rem;margin-bottom:0.7rem;
  }
  #homeAreasList .area-top{display:block;}
  #homeAreasList .area-name{display:block;font-size:0.84rem;line-height:1.32;margin-bottom:0.35rem;min-height:2.6em;}
  #homeAreasList .area-frac{display:block;font-size:0.72rem;margin-bottom:0.4rem;}

  /* ---- manual screen: two-pane desk ---- */
  .desk-grid{display:grid;grid-template-columns:55fr 45fr;gap:2rem;align-items:start;}
  .manual-pane{background:var(--paper);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:2.6rem 3rem 2.2rem;}
  .provenance,.chapter-eyebrow,.manual-footer{display:block;}
  .active-pane{display:flex;flex-direction:column;gap:1.4rem;}
  .manual-content{font-family:var(--serif);font-size:1.14rem;line-height:1.72;max-width:38rem;}
  .manual-content h3{font-family:var(--serif);font-size:1.3rem;margin:2rem 0 0.85rem;}
  .manual-content h4{font-family:var(--serif);font-size:1.1rem;}
  .manual-content blockquote,.manual-keynote{font-family:var(--serif);font-size:1.05rem;}

  /* ---- session / mock: comfortable centred column, cards not stretched ---- */
  .study-card{padding:2rem 2.2rem;}

  /* ---- study buddy: "Explain this" only ever shows on desktop ---- */
  .explain-link{display:inline-block;}

  /* ---- 3-strikes escalation card: "Ask the study buddy" offer is desktop-only ---- */
  #escBuddyBtn{display:block;}

  /* ---- study buddy: floating drawer on session/mock screens ---- */
  .buddy-panel--drawer{
    position:fixed;top:6.5rem;right:2rem;bottom:2rem;
    width:380px;max-width:calc(100vw - 4rem);
    z-index:1000;overflow-y:auto;
    box-shadow:0 24px 60px rgba(40,30,10,0.22);
  }
  .buddy-panel--drawer .chat-thread{max-height:none;}

  /* ---- drawer occlusion fix: shift the centred session/mock column left
     using the spare left margin so the drawer never overlaps/clips it.
     max-width shrinks first (via min()) so it never goes negative even
     at the 1100px floor; margin-right reserves the drawer's own footprint. ---- */
  body.buddy-drawer-open #screen-session,
  body.buddy-drawer-open #screen-mock,
  body.buddy-drawer-open #screen-mock-session,
  body.buddy-drawer-open #screen-mock-results,
  body.buddy-drawer-open #screen-session-done{
    max-width:min(720px, calc(100% - 400px));
    margin-left:auto;
    margin-right:400px;
    transition:margin .2s ease, max-width .2s ease;
  }
}