:root{
  --cream:#f3eee4;
  --ink:#111713;
  --green:#0d3328;
  --green-2:#153f33;
  --gold:#b98a4b;
  --muted:#756f66;
  --line:#d8d0c3;
  --white:#fffdf8;
  --danger:#8f3e38;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--cream);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
.shell{min-height:100vh;background:var(--cream)}
.topbar{height:82px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(24px,6vw,90px);background:rgba(243,238,228,.96);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:14px;letter-spacing:.22em;text-transform:uppercase;font-size:13px;font-weight:700}
.brand-mark{width:34px;height:34px;border:1px solid var(--gold);border-radius:50%;display:grid;place-items:center;font-family:Georgia,serif;color:var(--gold);letter-spacing:0;font-size:18px}
.brand small{display:block;color:var(--gold);font-size:8px;letter-spacing:.32em;margin-top:4px}
.nav{display:flex;align-items:center;gap:28px;font-size:12px}
.nav .active{border-bottom:1px solid var(--gold);padding-bottom:5px}
.student-chip{display:flex;align-items:center;gap:10px}
.avatar{width:31px;height:31px;border-radius:50%;background:var(--green);color:var(--cream);display:grid;place-items:center;font-size:11px;font-weight:700}
.btn{border:1px solid var(--green);background:transparent;padding:12px 18px;cursor:pointer;text-transform:uppercase;letter-spacing:.08em;font-size:11px}
.btn.primary{background:var(--green);color:var(--white)}
.btn.gold{border-color:var(--gold);color:var(--gold)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.login-wrap{min-height:calc(100vh - 82px);display:grid;grid-template-columns:1.05fr .95fr}
.login-hero{background:var(--green);color:var(--white);padding:clamp(55px,8vw,120px);display:flex;flex-direction:column;justify-content:center}
.eyebrow{text-transform:uppercase;letter-spacing:.22em;font-size:10px;color:var(--gold);font-weight:700}
h1,h2,h3{font-family:Georgia,"Times New Roman",serif;font-weight:400;margin:0}
.login-hero h1{font-size:clamp(52px,6vw,90px);line-height:.92;max-width:780px;margin:24px 0}
.login-hero p{font-size:16px;line-height:1.7;color:#d8e0db;max-width:600px}
.login-panel{display:flex;align-items:center;justify-content:center;padding:50px}
.login-card{width:min(470px,100%);background:var(--white);border:1px solid var(--line);padding:42px}
.login-card h2{font-size:38px;line-height:1.05;margin:14px 0 10px}
.login-card p{color:var(--muted);font-size:13px;line-height:1.6}
.google-btn{width:100%;display:flex;align-items:center;justify-content:center;gap:12px;border:1px solid var(--green);background:var(--green);color:white;padding:14px;margin-top:28px;cursor:pointer}
.google-g{width:22px;height:22px;border-radius:50%;background:white;color:#333;display:grid;place-items:center;font-weight:700}
.login-note{font-size:11px;color:var(--muted);margin-top:18px;text-align:center}
.error{margin-top:18px;color:var(--danger);font-size:12px;line-height:1.5;min-height:18px}
.dashboard{max-width:1260px;margin:0 auto;padding:70px 42px 90px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;border-bottom:1px solid var(--line);padding-bottom:55px}
.welcome h1{font-size:clamp(46px,5vw,76px);line-height:.95;margin:16px 0 22px}
.welcome p{color:var(--muted);max-width:680px;line-height:1.7}
.status-card{background:var(--green);color:white;padding:28px;min-height:250px;display:flex;flex-direction:column;justify-content:space-between}
.status-card .big{font-family:Georgia,serif;font-size:45px;color:var(--cream)}
.status-card .meta{display:grid;grid-template-columns:1fr 1fr;gap:18px;font-size:11px;color:#d5ddd8}
.section{padding:48px 0;border-bottom:1px solid var(--line)}
.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:26px}
.section-head h2{font-size:34px}
.section-head span{font-size:11px;color:var(--muted);letter-spacing:.12em;text-transform:uppercase}
.current-card{display:grid;grid-template-columns:1.45fr .55fr;background:var(--white);border:1px solid var(--line);min-height:250px}
.current-main{padding:34px}
.current-main h3{font-size:34px;margin:14px 0 12px}
.current-main p{color:var(--muted);line-height:1.65;max-width:650px}
.current-side{background:var(--green);color:white;padding:34px;display:flex;flex-direction:column;justify-content:space-between}
.progress-bar{height:5px;background:#d8d0c3;overflow:hidden;margin-top:16px}
.progress-bar > div{height:100%;background:var(--gold)}
.metrics{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:var(--white)}
.metric{padding:28px;border-right:1px solid var(--line)}
.metric:last-child{border-right:none}
.metric .n{font-family:Georgia,serif;font-size:34px;color:var(--green)}
.metric .l{font-size:10px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted);margin-top:8px}
.week-list{display:grid;gap:10px}
.week{display:grid;grid-template-columns:78px 1fr 145px;align-items:center;padding:20px 22px;border:1px solid var(--line);background:var(--white)}
.week .num{font-size:11px;color:var(--gold);letter-spacing:.12em}
.week h3{font-family:Inter,ui-sans-serif,system-ui;font-size:15px;font-weight:700;margin-bottom:5px}
.week p{margin:0;color:var(--muted);font-size:12px}
.week .state{text-align:right;font-size:10px;text-transform:uppercase;letter-spacing:.12em}
.week.locked{opacity:.55;background:transparent}
.week.current{border-color:var(--gold)}
.course-page{max-width:1180px;margin:0 auto;padding:60px 42px 90px}
.breadcrumb{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:30px}
.course-title{display:flex;justify-content:space-between;align-items:end;border-bottom:1px solid var(--line);padding-bottom:32px;margin-bottom:30px}
.course-title h1{font-size:54px;line-height:1}
.lesson-shell{display:grid;grid-template-columns:260px 1fr;border:1px solid var(--line);background:var(--white);min-height:520px}
.lesson-nav{border-right:1px solid var(--line);padding:24px}
.lesson-nav .item{padding:14px 0;border-bottom:1px solid var(--line);font-size:12px;color:var(--muted)}
.lesson-nav .item.active{color:var(--green);font-weight:700}
.lesson-content{padding:48px}
.lesson-content h2{font-size:40px;margin:12px 0 20px}
.lesson-content p{color:var(--muted);line-height:1.7;max-width:720px}
.callout{border-left:3px solid var(--gold);padding:16px 20px;background:#faf7f0;margin:28px 0;color:var(--ink)}
.lock-card{padding:70px;text-align:center}
.lock-card h2{font-size:42px;margin-bottom:16px}
.hidden{display:none!important}
.loading{min-height:100vh;display:grid;place-items:center;color:var(--muted);font-size:13px;letter-spacing:.12em;text-transform:uppercase}
@media(max-width:900px){
  .nav{display:none}.login-wrap{grid-template-columns:1fr}.login-hero{min-height:44vh}.hero-grid,.current-card,.lesson-shell{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:none}.week{grid-template-columns:55px 1fr}.week .state{grid-column:2;text-align:left;margin-top:8px}.current-side{min-height:200px}.lesson-nav{border-right:none;border-bottom:1px solid var(--line)}
}

.course-intro{color:var(--muted);line-height:1.6;max-width:700px;margin:16px 0 0}
.course-status{text-align:right;min-width:130px}.course-progress-number{font:44px Georgia,serif;color:var(--green);margin-top:8px}
.module-list{display:grid;gap:12px;margin-bottom:55px}
.module-card{display:grid;grid-template-columns:120px 1fr 150px;align-items:center;gap:24px;background:var(--white);border:1px solid var(--line);padding:26px}
.module-card.module-complete{border-color:#8da99c}.module-card.module-locked{opacity:.52;background:transparent}
.module-number{font-size:10px;letter-spacing:.16em;color:var(--gold);font-weight:700}
.module-copy h3{font-family:Inter,system-ui,sans-serif;font-size:18px;font-weight:700;margin:0 0 8px}
.module-copy p{margin:0;color:var(--muted);line-height:1.55;font-size:13px;max-width:720px}
.module-meta{margin-top:12px;text-transform:uppercase;letter-spacing:.1em;font-size:9px;color:var(--muted)}
.module-action{text-align:right}.locked-label{text-transform:uppercase;letter-spacing:.12em;font-size:10px}
.course-map-section{border-top:1px solid var(--line);padding-top:44px}
.course-map{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}
.map-week{display:grid;grid-template-columns:46px 1fr 80px;align-items:center;background:var(--white);border:1px solid var(--line);padding:16px}
.map-week span{color:var(--gold);font-size:10px}.map-week strong{font-size:12px}.map-week em{text-align:right;font-style:normal;text-transform:uppercase;letter-spacing:.1em;font-size:9px;color:var(--muted)}
.map-week.current{border-color:var(--gold)}.map-week.locked{opacity:.5;background:transparent}
.classroom-page{max-width:1360px;margin:0 auto;padding:48px 42px 90px}
.classroom-head{display:grid;grid-template-columns:1fr 220px;gap:40px;align-items:end;border-bottom:1px solid var(--line);padding-bottom:30px;margin-bottom:28px}
.back-link{display:inline-block;font-size:11px;color:var(--muted);margin-bottom:26px}
.classroom-head h1{font-size:52px;line-height:1;margin:12px 0}
.classroom-head p{color:var(--muted);line-height:1.6;max-width:800px}
.classroom-progress{text-align:right;font-size:11px;color:var(--muted)}
.classroom-shell{display:grid;grid-template-columns:250px 1fr;background:var(--white);border:1px solid var(--line);min-height:630px}
.slide-index{border-right:1px solid var(--line);padding:22px;max-height:720px;overflow:auto}
.slide-index-item{display:grid;grid-template-columns:32px 1fr;width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;padding:12px 2px;text-align:left;cursor:pointer;color:var(--muted)}
.slide-index-item span{font-size:9px;color:var(--gold)}.slide-index-item em{font-style:normal;font-size:9px;letter-spacing:.08em;text-transform:uppercase}
.slide-index-item.active{color:var(--green);font-weight:700}
.slide-stage{padding:58px 64px;display:flex;flex-direction:column}
.slide-section{color:var(--gold);font-size:10px;letter-spacing:.2em;text-transform:uppercase;font-weight:700}
.slide-stage h2{font-size:44px;line-height:1.08;margin:16px 0 28px;max-width:900px}
.slide-body{max-width:920px;min-height:320px}.slide-body>p,.slide-text-block p{font-size:17px;line-height:1.65;margin:0 0 14px;color:#3f443f}
.slide-text-block{padding:16px 0;border-bottom:1px solid #ece5da}
.checkpoint{display:flex;justify-content:space-between;align-items:center;gap:24px;background:#f7f1e6;border-left:3px solid var(--gold);padding:20px 22px;margin:24px 0}
.checkpoint p{margin:6px 0 0;color:var(--muted);font-size:12px}
.slide-controls{display:flex;justify-content:space-between;margin-top:auto;padding-top:30px;border-top:1px solid var(--line)}
@media(max-width:900px){
 .module-card{grid-template-columns:1fr}.module-action{text-align:left}.course-map{grid-template-columns:1fr}
 .classroom-head,.classroom-shell{grid-template-columns:1fr}.classroom-progress{text-align:left}.slide-index{display:none}.slide-stage{padding:36px 24px}.slide-stage h2{font-size:34px}
}


/* ============================================================
   ACADEMY v1.4 — POWERPOINT VISUAL DELIVERY
   ============================================================ */
.classroom-page{max-width:1500px}
.classroom-shell{grid-template-columns:230px minmax(0,1fr)}
.slide-stage{padding:34px 42px 40px}
.slide-stage h2{
  font-size:24px;
  margin:9px 0 20px;
  color:var(--green);
  font-family:Inter,system-ui,sans-serif;
  font-weight:650;
}
.slide-body{max-width:none;min-height:0}
.ppt-slide-frame{
  width:100%;
  background:#171a18;
  border:1px solid var(--line);
  box-shadow:0 10px 34px rgba(15,32,26,.10);
  display:flex;
  justify-content:center;
  align-items:center;
  overflow:hidden;
}
.ppt-slide-image{
  display:block;
  width:100%;
  height:auto;
  max-height:68vh;
  object-fit:contain;
  background:#f6f0e5;
}
.visual-fallback{
  min-height:420px;
  width:100%;
  padding:60px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  align-items:center;
  background:#f7f1e6;
  color:var(--muted);
}
.accessible-transcript{
  margin-top:14px;
  border:1px solid var(--line);
  background:#fbf8f1;
  color:var(--muted);
  font-size:12px;
}
.accessible-transcript summary{
  cursor:pointer;
  padding:12px 15px;
  text-transform:uppercase;
  letter-spacing:.09em;
  font-size:9px;
  font-weight:700;
  color:var(--green);
}
.accessible-transcript>div{
  border-top:1px solid var(--line);
  padding:16px 20px;
}
.accessible-transcript h3{font-size:16px;margin:0 0 10px;color:var(--green)}
.accessible-transcript p{font-size:13px;line-height:1.55;margin:0 0 8px}
.checkpoint{margin:16px 0 0}
.slide-controls{padding-top:20px;margin-top:20px}
@media(max-width:900px){
  .classroom-shell{grid-template-columns:1fr}
  .slide-stage{padding:22px 14px 28px}
  .ppt-slide-image{max-height:none}
  .slide-stage h2{font-size:20px}
}


/* v1.6 classroom transition polish */
.visual-fallback.visual-loading{
  min-height:420px;
  padding:0;
  color:transparent;
  background:#f6f0e5;
  position:relative;
}
.visual-fallback.visual-loading::after{
  content:"";
  width:34px;
  height:2px;
  background:rgba(176,127,55,.28);
  animation:academy-load-pulse 1.1s ease-in-out infinite;
}
@keyframes academy-load-pulse{
  0%,100%{opacity:.25;transform:scaleX(.55)}
  50%{opacity:.7;transform:scaleX(1)}
}