:root{--ev-bg:#f4f7fb;--ev-card:#fff;--ev-text:#172033;--ev-muted:#6b7280;--ev-accent-taupe:#8a7b68;--ev-accent-taupe-dark:#6f6355;--ev-accent-taupe-soft:#eee8df;--ev-primary:var(--ev-accent-taupe);--ev-primary-dark:var(--ev-accent-taupe-dark);--ev-soft:var(--ev-accent-taupe-soft);--ev-line:rgba(23,32,51,.1)}
*{box-sizing:border-box} body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ev-text);background:var(--ev-bg)}
.classroom-page{position:relative;min-height:100vh;background:linear-gradient(135deg,#fff8ec,#eef6ff 52%,#f3efff)}.classroom-page:before{content:"";position:fixed;inset:0;z-index:-2;background:radial-gradient(circle at 14% 12%,rgba(255,235,196,.9),transparent 28%),radial-gradient(circle at 88% 18%,rgba(212,229,255,.85),transparent 32%),linear-gradient(135deg,#fff8ec,#eef6ff 52%,#f3efff);background-size:cover;background-position:center}.classroom-page.has-classroom-wallpaper:before{background-image:linear-gradient(180deg,rgba(255,255,255,.26),rgba(255,255,255,.48)),var(--classroom-wallpaper);background-size:cover;background-position:center}.classroom-page:after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;background:linear-gradient(90deg,rgba(244,247,251,.72),rgba(244,247,251,.44) 46%,rgba(244,247,251,.70)),radial-gradient(circle at 50% 18%,rgba(255,255,255,.22),transparent 38%)}.classroom-page .classroom-topbar{background:rgba(255,255,255,.76)}.classroom-page .classroom-hero,.classroom-page .room-main-card,.classroom-page .side-card{background:rgba(255,255,255,.84);backdrop-filter:blur(18px);border-color:rgba(255,255,255,.62)}
.classroom-page .nav-scroll-shade,.quiz-classroom-mode .nav-scroll-shade{position:fixed;inset:0 0 auto;z-index:30;height:150px;pointer-events:none;background:linear-gradient(180deg,rgba(5,8,17,.52),rgba(5,8,17,.30) 42%,rgba(5,8,17,0));opacity:0;transition:opacity .24s ease}.classroom-page.is-nav-scrolled .nav-scroll-shade,.quiz-classroom-mode.is-nav-scrolled .nav-scroll-shade{opacity:1}
.classroom-join-page{min-height:100vh;background:radial-gradient(circle at 10% 10%,#dff7ff 0,transparent 30%),radial-gradient(circle at 90% 20%,#f3ddff 0,transparent 28%),linear-gradient(135deg,#f8fbff,#eef1ff);display:grid;place-items:center;padding:24px}
.classroom-join-shell{width:min(560px,100%)} .classroom-join-card{background:rgba(255,255,255,.86);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.7);border-radius:34px;box-shadow:0 28px 80px rgba(23,32,51,.13);padding:42px}
.join-badge,.eyebrow{display:inline-flex;align-items:center;gap:6px;background:var(--ev-soft);color:var(--ev-primary-dark);border-radius:999px;padding:7px 12px;font-size:.78rem;font-weight:900;text-transform:uppercase;letter-spacing:.05em}.classroom-join-card h1{font-size:clamp(2rem,5vw,3.25rem);line-height:1;margin:18px 0 14px;font-weight:950}.classroom-join-card p{color:var(--ev-muted);font-size:1.05rem}.join-form{display:grid;gap:14px;margin-top:24px}.join-form .form-control{border-radius:18px;border:1px solid var(--ev-line);padding:15px 16px}.btn-primary,.btn.btn-primary{background:linear-gradient(135deg,var(--ev-accent-taupe),var(--ev-accent-taupe-dark));border-color:transparent;border-radius:999px;font-weight:900;box-shadow:0 14px 32px rgba(78,68,56,.18)}.btn-primary:hover,.btn.btn-primary:hover{background:linear-gradient(135deg,var(--ev-accent-taupe-dark),#5f5549);border-color:transparent;box-shadow:0 16px 36px rgba(78,68,56,.22)}.join-login-hint{text-align:center;margin-top:18px;color:var(--ev-muted)}
.classroom-topbar{height:72px;display:flex;align-items:center;gap:16px;padding:0 clamp(16px,4vw,42px);background:rgba(255,255,255,.82);backdrop-filter:blur(18px);border-bottom:1px solid var(--ev-line);position:sticky;top:0;z-index:10}.brand{font-weight:950;font-size:1.35rem;color:var(--ev-text);text-decoration:none}.class-pill,.me-pill{border-radius:999px;background:#fff;border:1px solid var(--ev-line);padding:10px 14px;font-weight:850}.me-pill{margin-left:auto;display:flex;gap:8px;align-items:center;background:var(--ev-soft)}
.classroom-layout{width:min(1180px,100%);margin:0 auto;padding:28px 18px 60px}.classroom-hero{display:grid;grid-template-columns:minmax(0,1fr) 190px;gap:24px;align-items:stretch;background:linear-gradient(135deg,#fff,#f6f7ff);border:1px solid rgba(255,255,255,.8);border-radius:34px;box-shadow:0 22px 60px rgba(23,32,51,.08);padding:34px;margin-bottom:24px}.classroom-hero h1{font-size:clamp(2rem,5vw,4rem);line-height:.95;margin:14px 0;font-weight:950}.classroom-hero p{font-size:1.1rem;color:var(--ev-muted);max-width:680px}.room-pulse-card{background:#172033;color:#fff;border-radius:28px;display:grid;place-items:center;padding:22px;text-align:center;position:relative;overflow:hidden}.room-pulse-card strong{font-size:3rem;line-height:1}.room-pulse-card span{color:#cbd5e1;font-weight:800}.pulse-dot{width:16px;height:16px;border-radius:50%;background:#35e093;box-shadow:0 0 0 12px rgba(53,224,147,.15);animation:pulse 1.6s infinite}@keyframes pulse{50%{transform:scale(1.2);box-shadow:0 0 0 20px rgba(53,224,147,.05)}}
.classroom-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px}.room-main-card,.side-card{background:var(--ev-card);border:1px solid var(--ev-line);border-radius:30px;box-shadow:0 18px 50px rgba(23,32,51,.06);padding:24px}.section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}.section-head h2{font-size:1.35rem;font-weight:950;margin:0}.section-head.compact{margin-bottom:14px}.quiz-room-list{display:grid;gap:14px}.room-quiz-card{display:grid;grid-template-columns:58px minmax(0,1fr) auto;gap:16px;align-items:center;border:1px solid var(--ev-line);border-radius:24px;padding:16px;background:linear-gradient(180deg,#fff,#fbfcff)}.quiz-emoji{width:58px;height:58px;border-radius:20px;background:var(--ev-soft);display:grid;place-items:center;font-size:1.7rem}.room-quiz-card h3{font-size:1.08rem;font-weight:950;margin:0 0 4px}.room-quiz-card p{margin:0;color:var(--ev-muted);font-size:.94rem}.quiz-meta{display:flex;gap:8px;flex-wrap:wrap;margin-top:9px}.quiz-meta span{background:#f7f8fb;border:1px solid var(--ev-line);border-radius:999px;padding:4px 9px;font-size:.74rem;font-weight:850;color:#5b6472}.room-sidebar{display:grid;gap:24px;align-content:start}.online-list{display:grid;gap:9px}.online-person{width:100%;display:grid;grid-template-columns:42px minmax(0,1fr) auto;gap:10px;align-items:center;text-align:left;background:#f8fafc;border:1px solid var(--ev-line);border-radius:18px;padding:9px 10px;color:inherit}.online-person .avatar{width:42px;height:42px;border-radius:16px;background:#fff;display:grid;place-items:center;font-size:1.25rem}.online-person span:not(.avatar){font-weight:900;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.online-person small{color:var(--ev-primary-dark);font-weight:950}.online-person:disabled small{color:var(--ev-muted)}.online-person.is-sending{opacity:.6}.activity-feed{display:grid;gap:11px;max-height:420px;overflow:auto}.activity-item{display:grid;grid-template-columns:36px minmax(0,1fr);gap:10px;align-items:start}.activity-item>span{width:36px;height:36px;border-radius:14px;background:var(--ev-soft);display:grid;place-items:center}.activity-item strong{display:block;font-size:.9rem;line-height:1.2}.activity-item small{color:var(--ev-muted);font-weight:800}.empty-room-state{border:1px dashed var(--ev-line);border-radius:24px;padding:26px;text-align:center;color:var(--ev-muted);display:grid;gap:6px}.empty-room-state strong{color:var(--ev-text)}
@media(max-width:900px){.classroom-page.has-classroom-wallpaper:before{background-image:linear-gradient(180deg,rgba(255,255,255,.34),rgba(255,255,255,.62)),var(--classroom-wallpaper-mobile)}.classroom-hero,.classroom-grid{grid-template-columns:1fr}.room-quiz-card{grid-template-columns:48px minmax(0,1fr)}.room-quiz-card .btn{grid-column:1/-1}.room-pulse-card{min-height:150px}.class-pill{display:none}.classroom-join-card{padding:28px}}
.me-pill{border:0;cursor:pointer}.me-pill small{font-size:.72rem;color:var(--ev-primary-dark);font-weight:950}.avatar-bubble{width:42px;height:42px;border-radius:16px;background:#fff;display:grid;place-items:center;font-size:1.25rem;font-weight:950;line-height:1;color:#fff;text-transform:uppercase;box-shadow:inset 0 0 0 1px rgba(255,255,255,.34)}.avatar-bubble.emoji{color:inherit;background:#fff}.avatar-bubble.grad-1{background:linear-gradient(135deg,#6d5dfc,#20c997)}.avatar-bubble.grad-2{background:linear-gradient(135deg,#ff7a59,#ffd166)}.avatar-bubble.grad-3{background:linear-gradient(135deg,#3a86ff,#8338ec)}.avatar-bubble.grad-4{background:linear-gradient(135deg,#06d6a0,#118ab2)}.avatar-bubble.grad-5{background:linear-gradient(135deg,#ef476f,#7b2cbf)}.avatar-bubble.grad-6{background:linear-gradient(135deg,#2ec4b6,#ff9f1c)}.avatar-bubble.grad-7{background:linear-gradient(135deg,#111827,#64748b)}.avatar-bubble.grad-8{background:linear-gradient(135deg,#8ac926,#1982c4)}.online-person .avatar-bubble{width:42px;height:42px;border-radius:16px}.activity-item>.avatar-bubble{width:36px;height:36px;border-radius:14px;font-size:1rem}.duel-list{display:grid;gap:10px}.duel-item{border:1px solid var(--ev-line);border-radius:18px;background:#f8fafc;padding:12px;display:grid;gap:8px}.duel-item strong{font-size:.94rem}.duel-item small,.duel-waiting,.duel-empty{color:var(--ev-muted);font-weight:800}.duel-actions{display:flex;gap:8px;flex-wrap:wrap}.avatar-modal-backdrop{position:fixed;inset:0;background:rgba(15,23,42,.48);display:grid;place-items:center;padding:18px;z-index:100}.avatar-modal-backdrop[hidden]{display:none}.avatar-modal{width:min(560px,100%);background:#fff;border-radius:30px;box-shadow:0 30px 90px rgba(15,23,42,.28);padding:28px;position:relative}.avatar-modal-close{position:absolute;right:18px;top:14px;width:38px;height:38px;border:0;border-radius:999px;background:#f1f5f9;font-size:1.6rem;line-height:1}.avatar-modal h2{font-weight:950;margin:14px 0 8px}.avatar-modal p{color:var(--ev-muted)}.avatar-tabs{display:flex;background:#f1f5f9;border-radius:999px;padding:4px;margin:18px 0}.avatar-tabs button{flex:1;border:0;border-radius:999px;background:transparent;padding:10px;font-weight:950;color:#64748b}.avatar-tabs button.active{background:#fff;color:var(--ev-primary-dark);box-shadow:0 6px 18px rgba(15,23,42,.08)}.avatar-panel{display:none}.avatar-panel.active{display:block}.avatar-choice-grid,.gradient-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}.avatar-choice,.gradient-choice{height:58px;border:1px solid var(--ev-line);border-radius:20px;background:#fff;font-size:1.65rem}.gradient-grid{margin-top:14px;grid-template-columns:repeat(4,1fr)}.gradient-choice{display:grid;place-items:center;color:#fff;font-weight:950;font-size:1.05rem}.gradient-choice.active,.avatar-choice:hover,.gradient-choice:hover{outline:3px solid rgba(109,93,252,.25);border-color:var(--ev-primary)}.gradient-choice span{pointer-events:none}.avatar-error{margin-top:14px;border-radius:16px;background:#fee2e2;color:#991b1b;padding:10px 12px;font-weight:850}
@media(max-width:520px){.avatar-choice-grid{grid-template-columns:repeat(4,1fr)}.gradient-grid{grid-template-columns:repeat(2,1fr)}}

/* Immersive classroom wallpaper */
.classroom-page.has-classroom-wallpaper:before{background-image:linear-gradient(180deg,rgba(255,255,255,.06),rgba(255,255,255,.14)),var(--classroom-wallpaper);filter:saturate(1.08) contrast(1.03);transform:scale(1.01)}
.classroom-page:after{background:radial-gradient(circle at 50% 20%,rgba(255,255,255,.20),transparent 34%),radial-gradient(circle at 50% 70%,rgba(255,255,255,.16),transparent 46%),linear-gradient(90deg,rgba(248,250,252,.22),rgba(248,250,252,.06) 45%,rgba(248,250,252,.20)),linear-gradient(180deg,rgba(23,32,51,.05),rgba(23,32,51,.10));box-shadow:inset 0 0 180px rgba(23,32,51,.10)}
.classroom-page .classroom-topbar{background:rgba(255,255,255,.54);border-bottom:1px solid rgba(255,255,255,.42);box-shadow:0 14px 38px rgba(23,32,51,.08)}
.classroom-page .class-pill,.classroom-page .me-pill,.classroom-page .classroom-back{background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.55);backdrop-filter:blur(18px);box-shadow:0 12px 30px rgba(23,32,51,.08)}
.classroom-page .classroom-hero{background:transparent;border:0;box-shadow:none;backdrop-filter:none;padding:0;margin-bottom:24px}
.classroom-page .classroom-hero>div:first-child,.classroom-page .room-main-card,.classroom-page .side-card,.classroom-page .laerry-quiz-card{background:rgba(255,255,255,.64);border:1px solid rgba(255,255,255,.48);box-shadow:0 22px 60px rgba(23,32,51,.12);backdrop-filter:blur(20px) saturate(1.08)}
.classroom-page .classroom-hero>div:first-child{border-radius:30px;padding:30px 32px}
.classroom-page .room-pulse-card{align-self:start;min-height:0;background:rgba(255,255,255,.62);color:#172033;border:1px solid rgba(255,255,255,.54);border-radius:999px;grid-template-columns:auto auto;grid-template-rows:auto auto;column-gap:10px;place-items:center start;padding:12px 16px;box-shadow:0 18px 46px rgba(23,32,51,.12);backdrop-filter:blur(18px) saturate(1.08)}
.classroom-page .room-pulse-card strong{font-size:1.45rem;grid-column:2;grid-row:1;line-height:1}.classroom-page .room-pulse-card span{grid-column:2;grid-row:2;color:#64748b;font-size:.74rem;line-height:1;font-weight:900}.classroom-page .pulse-dot{grid-column:1;grid-row:1/3;width:11px;height:11px;box-shadow:0 0 0 7px rgba(53,224,147,.15)}
.classroom-page .online-person,.classroom-page .duel-item,.classroom-page .empty-mini-state,.classroom-page .classroom-card-progress span{background:rgba(255,255,255,.46);border-color:rgba(255,255,255,.48);backdrop-filter:blur(12px)}
.classroom-page .laerry-quiz-card-body{background:rgba(255,255,255,.52)}.classroom-page .laerry-quiz-card-description,.classroom-page .classroom-hero p{color:#4b5563}
@media(max-width:900px){.classroom-page.has-classroom-wallpaper:before{background-image:linear-gradient(180deg,rgba(255,255,255,.18),rgba(255,255,255,.36)),var(--classroom-wallpaper-mobile);filter:saturate(1.02) contrast(1)}.classroom-page:after{background:linear-gradient(180deg,rgba(248,250,252,.34),rgba(248,250,252,.46)),radial-gradient(circle at 50% 25%,rgba(255,255,255,.24),transparent 42%);box-shadow:inset 0 0 150px rgba(23,32,51,.14)}.classroom-page .classroom-hero>div:first-child,.classroom-page .room-main-card,.classroom-page .side-card,.classroom-page .laerry-quiz-card{background:rgba(255,255,255,.74);backdrop-filter:blur(24px) saturate(1.05)}.classroom-page .room-pulse-card{justify-self:start}}

/* Quiz-like open chrome */
.classroom-page .classroom-topbar{width:min(100% - 56px,1880px);height:auto;margin:18px auto 0;padding:0;top:14px;background:transparent;border:0;box-shadow:none;backdrop-filter:none}
.classroom-page .brand{color:#fff;background:transparent;border:0;box-shadow:none;text-shadow:0 12px 32px rgba(5,8,17,.38);font-size:clamp(1.05rem,2vw,1.45rem)}
.classroom-page .class-pill{margin-right:auto;background:rgba(255,255,255,.90);border-color:rgba(255,255,255,.72);box-shadow:0 18px 44px rgba(5,8,17,.18);padding:14px 20px;color:#172033;font-size:1rem}
.classroom-page .me-pill{background:rgba(255,255,255,.92);border-color:rgba(255,255,255,.72);box-shadow:0 18px 44px rgba(5,8,17,.18);padding:7px 14px 7px 7px}
.classroom-page .classroom-back{background:rgba(255,255,255,.88);border-color:rgba(255,255,255,.68)}
.classroom-page .classroom-layout{padding-top:40px}
.classroom-page .classroom-hero{align-items:start;margin-bottom:30px}
.classroom-page .classroom-hero>div:first-child{background:transparent;border:0;box-shadow:none;backdrop-filter:none;padding:0;max-width:900px}
.classroom-page .classroom-hero .eyebrow{background:rgba(255,255,255,.88);border:1px solid rgba(255,255,255,.62);box-shadow:0 12px 30px rgba(5,8,17,.12)}
.classroom-page .classroom-hero h1{margin:18px 0 0;color:#fff;font-size:clamp(3.7rem,7.6vw,7.6rem);line-height:.86;text-shadow:0 18px 54px rgba(5,8,17,.48);letter-spacing:0}
.classroom-page .classroom-hero p{display:none}
.classroom-page .room-pulse-card{margin-top:10px}
@media(max-width:900px){.classroom-page .classroom-topbar{width:min(100% - 28px,1880px);top:10px;margin-top:12px;gap:10px}.classroom-page .class-pill{padding:11px 15px}.classroom-page .classroom-layout{padding-top:28px}.classroom-page .classroom-hero h1{font-size:clamp(3rem,16vw,5.2rem)}}

/* Shared runtime header for classroom and class-context quizzes */
.laerry-runtime-topbar{width:min(100% - 56px,1880px);height:auto;margin:18px auto 0;padding:0;top:14px;background:transparent;border:0;box-shadow:none;backdrop-filter:none;position:sticky;z-index:40;display:flex;align-items:center;gap:18px}
.laerry-runtime-topbar .brand{color:#fff;background:transparent;border:0;box-shadow:none;text-shadow:0 12px 32px rgba(5,8,17,.38);font-size:clamp(1.05rem,2vw,1.45rem);font-weight:950;text-decoration:none}
.laerry-runtime-topbar .class-pill{margin-right:auto;text-decoration:none;background:rgba(255,255,255,.90);border:1px solid rgba(255,255,255,.72);box-shadow:0 18px 44px rgba(5,8,17,.18);padding:14px 20px;color:#172033;font-size:1rem;backdrop-filter:blur(18px)}
.laerry-runtime-topbar .me-pill{background:rgba(255,255,255,.92);border:1px solid rgba(255,255,255,.72);box-shadow:0 18px 44px rgba(5,8,17,.18);padding:7px 14px 7px 7px;backdrop-filter:blur(18px)}
.laerry-runtime-topbar .classroom-back{background:rgba(255,255,255,.88);border-color:rgba(255,255,255,.68)}
.runtime-teacher-dropdown{position:relative;margin-left:auto}.runtime-teacher-toggle{appearance:none}.runtime-teacher-meta{min-width:0;display:flex;flex-direction:column;align-items:flex-start;line-height:1.05}.runtime-teacher-meta strong{max-width:170px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:.96rem}.runtime-teacher-menu{position:absolute;right:0;top:calc(100% + 10px);z-index:80;width:260px;padding:8px;border-radius:22px;background:#fff;box-shadow:0 24px 60px rgba(5,8,17,.22);opacity:0;visibility:hidden;transform:translateY(-6px);transition:opacity .16s ease,transform .16s ease,visibility .16s ease}.runtime-teacher-dropdown.is-open .runtime-teacher-menu{opacity:1;visibility:visible;transform:translateY(0)}.runtime-teacher-menu-head{padding:12px 12px 10px}.runtime-teacher-menu-head strong,.runtime-teacher-menu-head span{display:block}.runtime-teacher-menu-head strong{font-weight:950;color:#172033}.runtime-teacher-menu-head span{margin-top:2px;color:#6c7482;font-size:.78rem;font-weight:800}.runtime-teacher-menu a{display:flex;align-items:center;gap:10px;border-radius:14px;padding:10px 12px;color:#172033;text-decoration:none;font-weight:850}.runtime-teacher-menu a:hover{background:#f3f1ff;color:#4037c9}.runtime-teacher-menu a.is-danger{color:#b42318}.runtime-teacher-menu hr{margin:8px 4px;border-color:rgba(23,32,51,.12)}
.online-count-pill{display:inline-flex;align-items:center;justify-content:center;min-width:1.75rem;height:1.75rem;margin-left:.45rem;padding:0 .48rem;border-radius:999px;background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.56);box-shadow:0 10px 24px rgba(23,32,51,.10);color:var(--ev-primary-dark);font-size:.82rem;font-weight:950;vertical-align:middle}
.quiz-classroom-mode .laerry-runtime-topbar{margin-top:18px}.quiz-classroom-mode .quiz-wrap{padding-top:32px}
@media(max-width:900px){.laerry-runtime-topbar{width:min(100% - 28px,1880px);top:10px;margin-top:12px;gap:10px}.laerry-runtime-topbar .class-pill{padding:11px 15px}.runtime-teacher-meta{display:none}.runtime-teacher-dropdown{margin-left:auto}.runtime-teacher-menu{right:-58px}}

/* Avatar gradient preview buttons */
.gradient-choice{position:relative;overflow:hidden;border:0;box-shadow:inset 0 0 0 1px rgba(255,255,255,.45),0 10px 24px rgba(15,23,42,.08);transition:transform .16s ease,box-shadow .16s ease,outline-color .16s ease}
.gradient-choice::after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 30% 20%,rgba(255,255,255,.38),transparent 34%),linear-gradient(180deg,rgba(255,255,255,.12),rgba(255,255,255,0));pointer-events:none}
.gradient-choice:hover{transform:translateY(-1px);box-shadow:inset 0 0 0 1px rgba(255,255,255,.5),0 16px 34px rgba(15,23,42,.13)}
.gradient-choice span{position:relative;z-index:1;text-shadow:0 1px 10px rgba(15,23,42,.22);letter-spacing:.04em}
.gradient-choice.grad-1{background:linear-gradient(135deg,#6d5dfc,#20c997)}
.gradient-choice.grad-2{background:linear-gradient(135deg,#ff7a59,#ffd166)}
.gradient-choice.grad-3{background:linear-gradient(135deg,#3a86ff,#8338ec)}
.gradient-choice.grad-4{background:linear-gradient(135deg,#06d6a0,#118ab2)}
.gradient-choice.grad-5{background:linear-gradient(135deg,#ef476f,#7b2cbf)}
.gradient-choice.grad-6{background:linear-gradient(135deg,#2ec4b6,#ff9f1c)}
.gradient-choice.grad-7{background:linear-gradient(135deg,#111827,#64748b)}
.gradient-choice.grad-8{background:linear-gradient(135deg,#8ac926,#1982c4)}

/* Classroom context inside quiz pages */
.quiz-classroom-mode {
  background: #f5f7fb;
}

.classroom-scene-status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.86);
  border: 1px solid rgba(255,255,255,.68);
  box-shadow: 0 14px 42px rgba(23,32,51,.10);
  color: #172033;
  font-weight: 950;
  backdrop-filter: blur(16px);
  transition: opacity .32s ease, transform .32s ease;
}

.classroom-scene-status.is-done {
  opacity: 0;
  transform: translateY(-6px);
}

.classroom-scene-spinner {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  border: 3px solid rgba(90,79,243,.20);
  border-top-color: #5a4ff3;
  animation: classroom-scene-spin .8s linear infinite;
}

@keyframes classroom-scene-spin {
  to { transform: rotate(360deg); }
}

body.quiz-page.quiz-classroom-mode {
  color: #172033;
  background:
    radial-gradient(circle at 50% 20%, rgba(255,255,255,.20), transparent 34%),
    radial-gradient(circle at 50% 70%, rgba(255,255,255,.16), transparent 46%),
    linear-gradient(90deg, rgba(248,250,252,.22), rgba(248,250,252,.06) 45%, rgba(248,250,252,.20)),
    linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.14)),
    var(--classroom-wallpaper, var(--quiz-bg-image, linear-gradient(135deg,#fff8ec,#eef6ff 52%,#f3efff)));
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
}

body.quiz-page.quiz-classroom-mode::before {
  background:
    radial-gradient(circle at 50% 18%, rgba(255,255,255,.18), transparent 36%),
    linear-gradient(180deg, rgba(23,32,51,.04), rgba(23,32,51,.10));
  box-shadow: inset 0 0 180px rgba(23,32,51,.10);
}

body.quiz-page.quiz-classroom-mode.quiz-media-building {
  background:
    radial-gradient(circle at 22% 18%, rgba(255,255,255,.13), transparent 28rem),
    radial-gradient(circle at 78% 12%, rgba(120,145,190,.14), transparent 32rem),
    linear-gradient(90deg, rgba(7,12,24,.66), rgba(15,23,42,.56) 45%, rgba(15,23,42,.72)),
    linear-gradient(180deg, rgba(7,12,24,.34), rgba(7,12,24,.58)),
    var(--classroom-wallpaper, var(--quiz-bg-image, linear-gradient(135deg,#8c8f96,#b8c0cc 52%,#aeb5c1)));
  background-size: cover;
  background-position: center;
}

body.quiz-page.quiz-classroom-mode.quiz-media-building::before {
  background:
    radial-gradient(circle at 38% 28%, rgba(255,255,255,.10), transparent 24rem),
    linear-gradient(90deg, rgba(3,7,18,.42), rgba(3,7,18,.24) 46%, rgba(3,7,18,.50)),
    linear-gradient(180deg, rgba(3,7,18,.18), rgba(3,7,18,.48));
  box-shadow: inset 0 0 220px rgba(3,7,18,.30);
}

body.quiz-page.quiz-classroom-mode .quiz-card {
  background: rgba(255,255,255,.64);
  border: 1px solid rgba(255,255,255,.48);
  box-shadow: 0 22px 60px rgba(23,32,51,.12);
  backdrop-filter: blur(20px) saturate(1.08);
}

body.quiz-page.quiz-classroom-mode .quiz-intro-card {
  color: #fff;
  min-height: auto;
  overflow: visible;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
}

body.quiz-page.quiz-classroom-mode .quiz-intro-media {
  display: none;
}

body.quiz-page.quiz-classroom-mode .quiz-intro-content {
  min-height: auto;
  max-width: 1040px;
  padding: clamp(36px, 7vw, 96px) 0 clamp(30px, 5vw, 60px);
  justify-content: flex-start;
}

body.quiz-page.quiz-classroom-mode .quiz-intro-content h2,
body.quiz-page.quiz-classroom-mode .quiz-intro-content p {
  text-shadow: 0 18px 54px rgba(5,8,17,.46);
}

body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-intro-content h2,
body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-intro-content p,
body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-meta-row span,
body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-learning-goal,
body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-media-pending-note {
  text-shadow: 0 18px 56px rgba(0,0,0,.55);
}

body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-media-pending-note,
body.quiz-page.quiz-classroom-mode.quiz-media-building .quiz-audio-settings,
body.quiz-page.quiz-classroom-mode.quiz-media-building .listening-intro-box,
body.quiz-page.quiz-classroom-mode.quiz-media-building .listening-comprehension-box {
  background: rgba(10,16,30,.30);
  border-color: rgba(255,255,255,.24);
  box-shadow: 0 24px 70px rgba(3,7,18,.18);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-panel,
body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option > span {
  background: rgba(255,255,255,.76);
  border-color: rgba(255,255,255,.70);
  backdrop-filter: blur(12px);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-settings {
  color: #172033;
  background: rgba(255,255,255,.66);
  border-color: rgba(255,255,255,.56);
  box-shadow: 0 26px 72px rgba(5,8,17,.18);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-settings .quiz-settings-kicker,
body.quiz-page.quiz-classroom-mode .quiz-audio-settings > div > strong {
  color: #fff;
  text-shadow: 0 10px 32px rgba(5,8,17,.38);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option > span {
  color: #172033;
  border-color: rgba(255,255,255,.86);
  background: rgba(255,255,255,.84);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.82), 0 16px 38px rgba(5,8,17,.14);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option strong {
  color: #172033;
  text-shadow: none;
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option small {
  color: #3f4858;
  text-shadow: none;
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option > span::after {
  border-color: rgba(23,32,51,.30);
  background: rgba(255,255,255,.96);
  box-shadow: 0 4px 14px rgba(5,8,17,.12);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option input:checked + span {
  color: #172033;
  border-color: rgba(90,79,243,.72);
  background: rgba(247,246,255,.94);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.86), 0 18px 42px rgba(90,79,243,.22);
}

body.quiz-page.quiz-classroom-mode .quiz-audio-mode-option input:checked + span::after {
  border-color: #5a4ff3;
  background: #5a4ff3;
  box-shadow: inset 0 0 0 4px #fff, 0 4px 14px rgba(90,79,243,.24);
}

body.quiz-page.quiz-classroom-mode .quiz-mini-hud span,
body.quiz-page.quiz-classroom-mode #counter {
  background: rgba(255,255,255,.62);
  border-color: rgba(255,255,255,.56);
  box-shadow: 0 10px 24px rgba(23,32,51,.10);
  color: var(--ev-primary-dark) !important;
  backdrop-filter: blur(18px);
}

body.quiz-page.quiz-classroom-mode .progress {
  background: rgba(255,255,255,.46);
}

body.quiz-page.quiz-classroom-mode .progress-bar {
  background: linear-gradient(90deg, var(--ev-accent-taupe), var(--ev-accent-taupe-dark));
}

body.quiz-page.quiz-classroom-mode .answer-btn {
  background: rgba(255,255,255,.70);
  border-color: rgba(255,255,255,.58);
  box-shadow: 0 16px 36px rgba(23,32,51,.08);
  backdrop-filter: blur(12px);
}

body.quiz-page.quiz-classroom-mode .quiz-intro-actions {
  align-items: center;
  gap: 18px;
}

body.quiz-page.quiz-classroom-mode .quiz-intro-actions .btn-primary {
  min-height: 72px;
  padding: 18px 34px;
  border-radius: 999px;
  background: rgba(255,255,255,.94);
  border: 1px solid rgba(255,255,255,.88);
  color: #172033;
  box-shadow: 0 24px 62px rgba(5,8,17,.28), inset 0 1px 0 rgba(255,255,255,.8);
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 950;
  backdrop-filter: blur(18px) saturate(1.08);
}

body.quiz-page.quiz-classroom-mode .quiz-intro-actions .btn-primary:hover {
  background: #fff;
  border-color: #fff;
  color: #172033;
  box-shadow: 0 28px 72px rgba(5,8,17,.34), inset 0 1px 0 rgba(255,255,255,.9);
  transform: translateY(-1px);
}

@media(max-width:900px) {
  body.quiz-page.quiz-classroom-mode {
    background:
      linear-gradient(180deg, rgba(248,250,252,.34), rgba(248,250,252,.46)),
      radial-gradient(circle at 50% 25%, rgba(255,255,255,.24), transparent 42%),
      var(--classroom-wallpaper-mobile, var(--classroom-wallpaper, var(--quiz-bg-image, linear-gradient(135deg,#fff8ec,#eef6ff 52%,#f3efff))));
    background-attachment: scroll;
  }

  body.quiz-page.quiz-classroom-mode .quiz-card {
    background: rgba(255,255,255,.74);
    backdrop-filter: blur(24px) saturate(1.05);
  }

  body.quiz-page.quiz-classroom-mode .quiz-intro-content {
    padding: 28px 0 42px;
  }
}

.classroom-quiz-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .85rem clamp(1rem, 3vw, 2rem);
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid rgba(15,23,42,.08);
  backdrop-filter: blur(18px);
  box-shadow: 0 12px 35px rgba(15,23,42,.08);
}

.classroom-back,
.classroom-quiz-room,
.classroom-quiz-me {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
}

.classroom-back {
  color: var(--ev-primary-dark);
  background: var(--ev-soft);
  padding: .62rem .9rem;
}

.classroom-quiz-room {
  color: #0f172a;
  background: #fff;
  padding: .62rem 1rem;
  box-shadow: inset 0 0 0 1px rgba(15,23,42,.08);
}

.classroom-quiz-me {
  color: #0f172a;
  background: #fff;
  padding: .35rem .8rem .35rem .38rem;
  box-shadow: inset 0 0 0 1px rgba(15,23,42,.08);
}

.classroom-highscore-list {
  display: grid;
  gap: .65rem;
}

.highscore-row {
  display: grid;
  grid-template-columns: 1.6rem 2.4rem 1fr auto;
  align-items: center;
  gap: .65rem;
  padding: .7rem;
  border-radius: 1rem;
  background: rgba(248,250,252,.92);
  border: 1px solid rgba(15,23,42,.06);
}

.highscore-rank {
  width: 1.6rem;
  height: 1.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--ev-soft);
  color: var(--ev-primary-dark);
  font-size: .78rem;
  font-weight: 900;
}

.highscore-row strong,
.highscore-row small {
  display: block;
  line-height: 1.2;
}

.highscore-row small {
  color: #64748b;
  font-size: .78rem;
  margin-top: .1rem;
}

.highscore-row > b {
  color: var(--ev-primary-dark);
  font-size: 1.05rem;
}

.empty-mini-state {
  padding: .85rem;
  border-radius: 1rem;
  background: #f8fafc;
  color: #64748b;
  font-size: .92rem;
}

.duel-result-box {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem;
  border-radius: 1.25rem;
  background: linear-gradient(135deg, #eef2ff, #f5f3ff);
  border: 1px solid rgba(99,102,241,.18);
  margin-top: 1.25rem;
}

.duel-result-icon {
  width: 3rem;
  height: 3rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 1rem;
  background: #fff;
  font-size: 1.45rem;
  box-shadow: 0 12px 24px rgba(78,68,56,.12);
}

.duel-result-box strong {
  display: block;
  font-size: 1.1rem;
  color: #111827;
}

.duel-result-box p {
  margin: .25rem 0 .7rem;
  color: #64748b;
}

.duel-scoreline {
  display: grid;
  gap: .35rem;
  font-size: .92rem;
  color: #334155;
}

@media (max-width: 720px) {
  .classroom-quiz-topbar {
    align-items: stretch;
    flex-direction: column;
  }
  .classroom-back,
  .classroom-quiz-room,
  .classroom-quiz-me {
    justify-content: center;
  }
}

/* Klassenraum quiz cards */
.classroom-empty-action {
  grid-column: 1 / -1;
  width: min(680px, 100%);
  display: grid;
  gap: 10px;
  margin: 4px 0 6px;
  padding: 22px;
  border: 1px dashed rgba(23,32,51,.16);
  border-radius: 26px;
  background: rgba(255,255,255,.62);
  color: #64748b;
  box-shadow: 0 14px 36px rgba(23,32,51,.06);
  backdrop-filter: blur(14px);
}

.classroom-empty-action strong {
  display: block;
  color: #172033;
  font-size: 1.12rem;
  line-height: 1.15;
  font-weight: 950;
}

.classroom-empty-action span {
  display: block;
  max-width: 540px;
  line-height: 1.42;
  font-weight: 760;
}

.classroom-empty-action > div {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.classroom-empty-action .btn {
  border-radius: 999px;
  font-weight: 950;
  padding: 10px 16px;
}

.classroom-empty-action.is-student {
  padding: 26px;
  text-align: center;
  justify-items: center;
}

.classroom-empty-action.is-student span {
  max-width: 460px;
}

.classroom-quiz-card-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  justify-content: stretch;
  gap: 1rem;
}

.classroom-grid > .room-sidebar {
  position: sticky;
  top: 104px;
  align-self: start;
}

.classroom-quiz-card {
  min-width: 0;
  box-shadow: 0 18px 48px rgba(23,32,51,.08);
}

.classroom-quiz-card .laerry-quiz-card-media {
  height: 210px;
  min-height: 210px;
}

.classroom-quiz-card.is-cover-pending .laerry-quiz-card-media {
  background:
    radial-gradient(circle at 16% 18%, rgba(255,255,255,.30), transparent 24%),
    linear-gradient(125deg, #746755, #c8baa4 38%, #8f806b 58%, #ded3c2);
  background-size: 160% 160%;
  animation: classroom-cover-wush-bg 4.8s ease-in-out infinite;
}

.classroom-quiz-card.is-cover-pending .laerry-quiz-card-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(105deg, transparent 20%, rgba(255,255,255,.30) 42%, transparent 64%);
  transform: translateX(-120%);
  animation: classroom-cover-wush-sweep 2.8s ease-in-out infinite;
}

@keyframes classroom-cover-wush-bg {
  0%, 100% { background-position: 0% 45%; }
  50% { background-position: 100% 55%; }
}

@keyframes classroom-cover-wush-sweep {
  0% { transform: translateX(-120%); opacity: 0; }
  18% { opacity: .85; }
  58%, 100% { transform: translateX(120%); opacity: 0; }
}

.classroom-card-progress {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: 1rem;
}

.classroom-card-progress span {
  display: inline-flex;
  align-items: center;
  gap: .38rem;
  padding: .38rem .62rem;
  border-radius: 999px;
  background: #f8fafc;
  border: 1px solid rgba(15,23,42,.07);
  color: #64748b;
  font-size: .78rem;
  font-weight: 850;
}

.classroom-card-progress strong {
  color: #172033;
}

.progress-icon {
  position: relative;
  width: 1.12rem;
  height: 1.12rem;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 2px solid currentColor;
  color: var(--ev-accent-taupe);
  opacity: .88;
}

.progress-icon::before,
.progress-icon::after {
  content: "";
  position: absolute;
  display: block;
}

.progress-icon.icon-check::before {
  width: .42rem;
  height: .24rem;
  border-left: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg) translate(1px,-1px);
}

.progress-icon.icon-x::before,
.progress-icon.icon-x::after {
  width: .52rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
}

.progress-icon.icon-x::before { transform: rotate(45deg); }
.progress-icon.icon-x::after { transform: rotate(-45deg); }

.progress-icon.icon-open { color: #a99f91; }

.progress-icon.icon-spark {
  border-radius: .35rem;
  transform: rotate(45deg) scale(.88);
}

.progress-icon.icon-spark::before,
.progress-icon.icon-spark::after {
  background: currentColor;
  border-radius: 999px;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
}

.progress-icon.icon-spark::before { width: .12rem; height: .62rem; }
.progress-icon.icon-spark::after { width: .62rem; height: .12rem; }

.classroom-quiz-card .laerry-quiz-card-donut.is-empty {
  background: rgba(226,232,240,.88);
}

.classroom-quiz-card .laerry-quiz-card-donut {
  box-shadow: 0 10px 28px rgba(15,23,42,.14);
}

.classroom-quiz-card .laerry-quiz-card-description {
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

@media (min-width: 1180px) {
  .classroom-layout {
    width: min(1320px, 100%);
  }

  .classroom-grid {
    grid-template-columns: minmax(0, 1fr) 340px;
  }
}

@media (max-width: 1100px) {
  .classroom-grid {
    grid-template-columns: 1fr;
  }

  .classroom-quiz-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .room-sidebar {
    position: static;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}

@media (max-width: 760px) {
  .classroom-quiz-card-grid {
    grid-template-columns: 1fr;
  }
}

/* Klassenraum Header: Button auf kleinen Screens ausblenden, damit nichts umbricht */
@media (max-width: 768px) {
  .classroom-header .classroom-back-button,
  .classroom-header .btn-classroom-back,
  .classroom-header .classroom-nav-button,
  .classroom-shell-header .classroom-back-button,
  .classroom-shell-header .btn-classroom-back,
  .classroom-shell-header .classroom-nav-button {
    display: none !important;
  }
}

/* Guest PIN auth */
.join-methods {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.join-form-card {
  align-content: start;
  border: 1px solid rgba(15,23,42,.08);
  border-radius: 1.5rem;
  background: rgba(248,250,252,.82);
  padding: 1rem;
}

.join-form-card h2 {
  margin: .35rem 0 .25rem;
  font-size: 1.05rem;
  font-weight: 950;
  color: #172033;
}

.join-form-card p {
  margin: 0 0 .85rem;
  font-size: .92rem;
  color: #64748b;
}

.join-form-icon {
  width: 2.8rem;
  height: 2.8rem;
  display: inline-grid;
  place-items: center;
  border-radius: 1rem;
  background: #fff;
  box-shadow: 0 10px 24px rgba(15,23,42,.08);
  font-size: 1.3rem;
}

.join-pin-input {
  text-align: center;
  letter-spacing: .28em;
  font-weight: 950;
  font-variant-numeric: tabular-nums;
}

.join-form-card .form-control::placeholder {
  color: rgba(23, 32, 51, .34);
  font-weight: 760;
}

.join-pin-input::placeholder {
  color: rgba(23, 32, 51, .28);
  letter-spacing: .34em;
  font-weight: 850;
}

.classroom-pin-notice {
  width: min(1180px, calc(100% - 32px));
  margin: -10px auto 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.2rem;
  border-radius: 1.5rem;
  background: linear-gradient(135deg, #172033, var(--ev-accent-taupe-dark));
  color: #fff;
  box-shadow: 0 24px 60px rgba(78,68,56,.18);
}

.classroom-pin-notice .eyebrow {
  color: rgba(255,255,255,.7);
}

.classroom-pin-notice strong {
  display: block;
  margin: .1rem 0 .15rem;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: .95;
  letter-spacing: .16em;
  font-weight: 950;
  font-variant-numeric: tabular-nums;
}

.classroom-pin-notice p {
  margin: 0;
  color: rgba(255,255,255,.82);
  max-width: 46rem;
}

.classroom-pin-notice small {
  color: rgba(255,255,255,.7);
  font-weight: 850;
  white-space: nowrap;
}

@media (max-width: 760px) {
  .join-methods {
    grid-template-columns: 1fr;
  }

  .classroom-pin-notice {
    align-items: flex-start;
    flex-direction: column;
  }

  .classroom-pin-notice small {
    white-space: normal;
  }
}

/* Guest PIN confirmation step */
.pin-confirm-hero {
  width: 4.4rem;
  height: 4.4rem;
  display: grid;
  place-items: center;
  border-radius: 1.6rem;
  background: linear-gradient(135deg, #172033, var(--ev-accent-taupe-dark));
  color: #fff;
  font-size: 2rem;
  box-shadow: 0 18px 42px rgba(78,68,56,.22);
  margin-bottom: 1rem;
}

.classroom-pin-display {
  margin: 1.4rem 0 1rem;
  padding: 1rem 1.25rem;
  border-radius: 1.6rem;
  background: linear-gradient(135deg, #172033, var(--ev-accent-taupe-dark));
  color: #fff;
  text-align: center;
  font-size: clamp(3rem, 12vw, 5rem);
  line-height: 1;
  letter-spacing: .18em;
  font-weight: 950;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 24px 60px rgba(78,68,56,.2);
}

.pin-confirm-hint,
.join-help-text {
  color: #64748b;
  font-size: .92rem;
}

.join-help-text {
  margin-top: -.35rem;
  margin-bottom: .2rem;
}

/* Released room content */
.classroom-room-content {
  display: grid;
  gap: 22px;
  margin-top: 26px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,.48);
}

.classroom-content-section {
  display: grid;
  gap: 12px;
}

.classroom-content-section h3 {
  margin: 0;
  color: #172033;
  font-size: 1.05rem;
  font-weight: 950;
}

.classroom-vocab-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.classroom-vocab-head p {
  margin: 4px 0 0;
  color: #64748b;
  font-weight: 750;
}

.classroom-vocab-practice-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  border-radius: 999px;
  background: #172033;
  color: #fff;
  text-decoration: none;
  font-weight: 950;
  padding: .72rem 1rem;
  box-shadow: 0 14px 34px rgba(23,32,51,.14);
}

.classroom-vocab-practice-btn:hover {
  color: #fff;
  background: #0f172a;
}

.classroom-content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.classroom-content-card,
.classroom-vocab-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px;
  border-radius: 20px;
  background: rgba(255,255,255,.50);
  border: 1px solid rgba(255,255,255,.52);
  box-shadow: 0 14px 34px rgba(23,32,51,.07);
  backdrop-filter: blur(14px);
}

.classroom-content-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  color: var(--ev-primary-dark);
  background: rgba(255,255,255,.54);
}

.classroom-content-icon svg,
.classroom-vocab-play svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.classroom-vocab-play svg {
  fill: currentColor;
  stroke: none;
}

.classroom-content-card strong,
.classroom-vocab-row strong {
  display: block;
  color: #172033;
  font-weight: 950;
  line-height: 1.15;
}

.classroom-content-card small,
.classroom-vocab-row small {
  display: block;
  margin-top: 4px;
  color: #64748b;
  font-weight: 750;
  line-height: 1.35;
}

.classroom-content-link {
  display: inline-flex;
  margin-top: 8px;
  color: var(--ev-primary-dark);
  font-weight: 950;
  text-decoration: none;
}

.classroom-vocab-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.classroom-vocab-row {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.classroom-vocab-row span {
  display: block;
  color: #64748b;
  font-weight: 850;
}

.classroom-vocab-play {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.62);
  border-radius: 999px;
  color: var(--ev-primary-dark);
  background: rgba(255,255,255,.72);
  box-shadow: 0 10px 26px rgba(23,32,51,.08);
}

@media (max-width: 760px) {
  .classroom-vocab-head {
    align-items: stretch;
    flex-direction: column;
  }

  .classroom-content-grid,
  .classroom-vocab-list {
    grid-template-columns: 1fr;
  }
}

/* Vocabulary study module */
.classroom-vocabulary-study {
  margin-top: 30px;
  display: grid;
  grid-template-columns: minmax(220px, .62fr) minmax(0, 1.38fr);
  gap: 18px;
  border-radius: 34px;
  padding: 18px;
  background:
    linear-gradient(135deg, rgba(255,255,255,.72), rgba(239,232,218,.52)),
    rgba(255,255,255,.45);
  border: 1px solid rgba(255,255,255,.62);
  box-shadow: 0 28px 68px rgba(23,32,51,.14);
  backdrop-filter: blur(20px);
}

.classroom-vocabulary-cover {
  min-height: 240px;
  border-radius: 26px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
  overflow: hidden;
  position: relative;
  background:
    radial-gradient(circle at 24% 16%, rgba(255,255,255,.32), transparent 28%),
    linear-gradient(135deg, rgba(76,68,55,.78), rgba(143,127,104,.78)),
    linear-gradient(120deg, #8f7f68, #c7b89c);
  background-size: cover;
  background-position: center;
}

.classroom-vocabulary-cover.has-image {
  background-image:
    linear-gradient(180deg, rgba(20,24,33,.04), rgba(20,24,33,.18)),
    var(--vocabulary-cover-image);
}

.classroom-vocabulary-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, transparent 0 52%, rgba(255,255,255,.13) 52% 53%, transparent 53%),
    radial-gradient(circle at 78% 28%, rgba(255,255,255,.18), transparent 22%);
  opacity: .9;
}

.classroom-vocabulary-cover.has-image::before {
  background:
    radial-gradient(circle at 16% 14%, rgba(255,255,255,.28), transparent 28%),
    linear-gradient(90deg, rgba(22,26,35,.56), rgba(22,26,35,.16) 62%, rgba(22,26,35,.36));
}

.classroom-vocabulary-cover > * {
  position: relative;
  z-index: 1;
}

.classroom-vocabulary-kicker {
  width: max-content;
  max-width: 100%;
  border-radius: 999px;
  padding: 7px 12px;
  margin-bottom: 12px;
  background: rgba(255,255,255,.24);
  border: 1px solid rgba(255,255,255,.28);
  font-size: .78rem;
  font-weight: 950;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.classroom-vocabulary-cover h3 {
  margin: 0;
  font-size: clamp(1.55rem, 3vw, 2.4rem);
  line-height: .98;
  letter-spacing: 0;
  font-weight: 950;
}

.classroom-vocabulary-cover p {
  margin: 10px 0 0;
  color: rgba(255,255,255,.82);
  font-weight: 750;
}

.classroom-vocabulary-stats {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.classroom-vocabulary-stats span {
  border-radius: 999px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.2);
  padding: 6px 10px;
  font-size: .82rem;
  font-weight: 900;
}

.classroom-vocabulary-preview {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.classroom-vocabulary-header {
  margin-bottom: 4px;
}

.classroom-vocabulary-header h3 {
  margin: 8px 0 0;
  color: #172033;
  font-size: clamp(1.22rem, 1.9vw, 1.72rem);
  line-height: 1.02;
  font-weight: 950;
  letter-spacing: 0;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.classroom-vocabulary-header p {
  margin: 6px 0 0;
  color: #687386;
  font-weight: 780;
  line-height: 1.25;
}

.classroom-vocabulary-progress-donut {
  position: absolute;
  z-index: 2;
  left: 18px;
  top: 18px;
  width: 58px;
  height: 58px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background:
    conic-gradient(
      #00b894 0deg var(--vocabulary-donut-green, 0deg),
      #ff7675 var(--vocabulary-donut-green, 0deg) calc(var(--vocabulary-donut-green, 0deg) + var(--vocabulary-donut-red, 0deg)),
      rgba(255,255,255,.72) calc(var(--vocabulary-donut-green, 0deg) + var(--vocabulary-donut-red, 0deg)) 360deg
    );
  box-shadow: 0 10px 28px rgba(15,23,42,.14);
  flex: 0 0 auto;
}

.vocabulary-intro-progress .classroom-vocabulary-progress-donut {
  position: relative;
  left: auto;
  top: auto;
}

.classroom-vocabulary-progress-donut.is-empty {
  background: rgba(226,232,240,.88);
}

.classroom-vocabulary-progress-donut::before {
  content: "";
  width: 36px;
  height: 36px;
  border-radius: inherit;
  background: rgba(255,255,255,.96);
  box-shadow: inset 0 0 0 1px rgba(23,32,51,.05);
}

.classroom-vocabulary-progress-donut-label {
  position: absolute;
  color: #172033;
  font-size: .72rem;
  font-weight: 950;
}

.classroom-vocabulary-word {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 42px;
  align-items: center;
  gap: 12px;
  border-radius: 18px;
  padding: 12px 12px 12px 16px;
  background: rgba(255,255,255,.62);
  border: 1px solid rgba(255,255,255,.58);
}

.classroom-vocabulary-word strong {
  display: block;
  color: #172033;
  font-size: 1rem;
  line-height: 1.15;
  font-weight: 950;
}

.classroom-vocabulary-word span {
  display: block;
  color: #687386;
  font-size: .9rem;
  line-height: 1.25;
  font-weight: 750;
  margin-top: 2px;
}

.classroom-vocabulary-audio {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid rgba(143,127,104,.28);
  background: #fff;
  color: #8f7f68;
  display: grid;
  place-items: center;
}

.classroom-vocabulary-audio svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.classroom-vocabulary-audio.is-muted {
  opacity: .42;
}

.classroom-vocabulary-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: auto;
  padding-top: 8px;
}

.classroom-vocabulary-actions .btn {
  border-radius: 999px;
  font-weight: 950;
  padding: 11px 16px;
}

.classroom-vocabulary-word-count {
  margin-left: auto;
  color: #687386;
  font-size: .86rem;
  font-weight: 900;
}

.classroom-vocabulary-empty {
  width: min(560px, 100%);
  margin-top: 24px;
  padding: 18px;
  border-radius: 24px;
  color: rgba(23,32,51,.72);
  font-weight: 850;
  background: rgba(255,255,255,.58);
  border: 1px dashed rgba(23,32,51,.16);
  display: grid;
  gap: 8px;
}

.classroom-vocabulary-empty strong {
  color: #172033;
  font-size: 1.05rem;
  font-weight: 950;
}

.classroom-vocabulary-empty span {
  line-height: 1.35;
}

.classroom-vocabulary-empty .btn {
  justify-self: start;
  margin-top: 4px;
  border-radius: 999px;
  font-weight: 950;
}

.vocabulary-set-hero {
  width: min(760px, 100%);
  min-height: 260px;
  margin: 0;
}

body.quiz-page.quiz-vocabulary-mode {
  background:
    linear-gradient(180deg, rgba(19,24,34,.72), rgba(19,24,34,.82)),
    var(--quiz-bg-image);
  background-size: cover;
  background-position: center;
}

body.quiz-page.quiz-vocabulary-mode .quiz-wrap {
  min-height: calc(100vh - 106px);
  padding-top: clamp(22px, 5vw, 76px);
}

body.quiz-page.quiz-vocabulary-mode .quiz-shell {
  max-width: min(1180px, 100%);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-card {
  min-height: min(72vh, 720px);
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  position: relative;
  border-radius: clamp(28px, 4vw, 44px);
  border: 1px solid rgba(255,255,255,.42);
  background:
    linear-gradient(90deg, rgba(22,26,35,.72), rgba(22,26,35,.18) 62%, rgba(22,26,35,.42)),
    var(--vocabulary-cover-image);
  background-size: cover;
  background-position: center;
  box-shadow: 0 36px 90px rgba(6,11,22,.34);
  backdrop-filter: blur(18px);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 18% 18%, rgba(255,255,255,.2), transparent 28rem),
    linear-gradient(180deg, rgba(255,255,255,.08), rgba(0,0,0,.22));
  pointer-events: none;
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-media {
  display: block;
  position: absolute;
  inset: 0;
  background: var(--vocabulary-cover-image);
  background-size: cover;
  background-position: center;
  opacity: .72;
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-media.is-cover-pending {
  background:
    radial-gradient(circle at 28% 18%, rgba(255,255,255,.2), transparent 24%),
    linear-gradient(135deg, #665d50, #a99779 58%, #d8ceb8);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 760px;
  min-height: min(72vh, 720px);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(34px, 6vw, 84px);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-content h2 {
  color: #fff;
  text-shadow: 0 18px 46px rgba(0,0,0,.28);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-content p,
body.quiz-page.quiz-vocabulary-mode .quiz-progress-text {
  color: rgba(255,255,255,.82);
}

body.quiz-page.quiz-vocabulary-mode .quiz-meta-row span {
  color: #7b705f;
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(255,255,255,.48);
  box-shadow: 0 12px 30px rgba(12,18,30,.16);
}

body.quiz-page.quiz-vocabulary-mode .quiz-intro-actions .btn-primary {
  background: #fff;
  border-color: #fff;
  color: #172033;
  box-shadow: 0 20px 44px rgba(0,0,0,.2);
}

.vocabulary-intro-progress {
  width: min(430px, 100%);
  display: grid;
  grid-template-columns: 64px minmax(0,1fr);
  gap: 14px;
  align-items: center;
  margin: 8px 0 22px;
  padding: 12px 14px;
  border-radius: 24px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.24);
  box-shadow: 0 18px 44px rgba(0,0,0,.12);
  backdrop-filter: blur(16px);
}

.vocabulary-intro-progress > div > span {
  display: block;
  color: rgba(255,255,255,.72);
  font-size: .74rem;
  font-weight: 950;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.vocabulary-intro-progress strong {
  display: block;
  margin-top: 2px;
  color: #fff;
  line-height: 1.1;
  font-weight: 950;
  text-shadow: 0 12px 30px rgba(0,0,0,.24);
}

.vocabulary-intro-progress small {
  display: block;
  margin-top: 4px;
  color: rgba(255,255,255,.78);
  font-weight: 800;
}

body.quiz-page.quiz-vocabulary-mode .quiz-global-footer,
body.quiz-page.quiz-vocabulary-mode .site-footer,
body.quiz-page.quiz-vocabulary-mode .laerry-global-footer {
  position: relative;
  z-index: 8;
  width: min(1180px, calc(100% - 48px));
  margin: clamp(24px, 3vw, 42px) auto 28px;
  padding: 18px 0 0;
  border-top: 1px solid rgba(255,255,255,.18);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  color: rgba(255,255,255,.78);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: .82rem;
  font-weight: 780;
  text-shadow: 0 8px 24px rgba(0,0,0,.22);
}

body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__claim {
  min-width: min(100%, 260px);
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__brand {
  color: #fff;
  text-decoration: none;
  font-size: 1.02rem;
  font-weight: 950;
  letter-spacing: -.055em;
}

body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav a,
body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav button {
  border: 0;
  background: transparent;
  padding: 0;
  color: rgba(255,255,255,.78);
  font: inherit;
  text-decoration: none;
}

body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav a:hover,
body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav button:hover {
  color: #fff;
  text-decoration: underline;
}

@media (max-width: 760px) {
  .classroom-vocabulary-study {
    grid-template-columns: 1fr;
    padding: 12px;
    border-radius: 26px;
  }

  .classroom-vocabulary-cover {
    min-height: 220px;
    border-radius: 22px;
  }

  .classroom-vocabulary-word-count {
    width: 100%;
    margin-left: 0;
  }

  body.quiz-page.quiz-vocabulary-mode .quiz-intro-card,
  body.quiz-page.quiz-vocabulary-mode .quiz-intro-content {
    min-height: 68vh;
  }

  body.quiz-page.quiz-vocabulary-mode .quiz-intro-content {
    padding: 28px;
  }

  body.quiz-page.quiz-vocabulary-mode .laerry-global-footer {
    width: min(100% - 28px, 1180px);
    align-items: flex-start;
    flex-direction: column;
    padding-bottom: 24px;
  }

  body.quiz-page.quiz-vocabulary-mode .laerry-global-footer__nav {
    justify-content: flex-start;
    gap: 9px 12px;
  }
}