:root{--navy:#0f2d52;--blue:#1769d3;--gold:#f0ad32;--ink:#18283d;--muted:#68788d;--line:#e4e9ef;--bg:#f7f9fc;--white:#fff;--danger:#c62828;--ok:#16834a;--shadow:0 18px 50px rgba(15,45,82,.10)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}a{text-decoration:none;color:inherit}button,input{font:inherit}.container{width:min(1180px,calc(100% - 36px));margin:auto}.topbar{height:78px;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);display:flex;align-items:center;position:sticky;top:0;z-index:10}.nav{display:flex;align-items:center;justify-content:space-between;gap:20px}.brand img{display:block;width:205px;height:auto}.navlinks{display:flex;align-items:center;gap:8px}.navlinks a{padding:11px 15px;color:#52657d;font-weight:650}.navlinks .nav-cta{background:var(--navy);color:#fff;border-radius:10px}.hero{padding:86px 0 72px;background:linear-gradient(180deg,#fff 0%,#f7f9fc 100%)}.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:72px;align-items:center}.eyebrow{color:var(--blue);font-weight:800;font-size:12px;letter-spacing:.15em}.hero h1{font-size:clamp(48px,6vw,76px);line-height:1;letter-spacing:-3px;margin:16px 0}.hero p{font-size:19px;line-height:1.65;color:var(--muted);max-width:650px}.actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}.btn{border:0;border-radius:11px;padding:13px 19px;font-weight:750;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover{background:#153d6c}.btn-secondary{background:#fff;border:1px solid var(--line);color:var(--ink)}.hero-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:var(--shadow)}.meeting-preview{background:#fff}.preview-top{display:flex;align-items:center;gap:9px;padding-bottom:14px;border-bottom:1px solid var(--line);font-weight:750}.status-dot{width:9px;height:9px;border-radius:50%;background:#2aa66a;box-shadow:0 0 0 5px #e9f8f0}.preview-badge{margin-left:auto;font-size:12px;color:var(--muted)}.preview-screen{min-height:250px;border-radius:16px;background:linear-gradient(135deg,#102f54,#194d80);margin-top:18px;color:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:30px}.preview-avatar{width:76px;height:76px;border-radius:50%;display:grid;place-items:center;background:rgba(240,173,50,.95);color:var(--navy);font-weight:900;font-size:23px;margin-bottom:16px}.preview-screen p{font-size:14px;color:#dce8f4;margin:7px 0 0}.preview-controls{display:flex;justify-content:center;gap:12px;margin-top:16px}.preview-controls span{width:40px;height:40px;border-radius:12px;background:#f2f5f8;display:grid;place-items:center}.footer{padding:28px 0;color:var(--muted);font-size:13px}.footer-row{display:flex;justify-content:space-between;gap:20px}.auth-wrap{min-height:calc(100vh - 78px);display:grid;place-items:center;padding:40px 16px}.auth-card{width:min(460px,100%);background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow)}.auth-card h1{margin:0 0 8px;font-size:30px}.muted{color:var(--muted)}.field{margin:16px 0}.field label{display:block;font-weight:700;margin-bottom:7px}.field input{width:100%;padding:13px 14px;border:1px solid #ccd5df;border-radius:11px;outline:none}.field input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(23,105,211,.1)}.full{width:100%}.msg{margin:14px 0;padding:12px 14px;border-radius:10px;background:#f3f6fa;color:#526174}.msg.error{background:#fff1f1;color:var(--danger)}.msg.ok{background:#eefaf4;color:var(--ok)}.dashboard{padding:38px 0}.dash-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:26px}.dash-head h1{margin:0;font-size:34px}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}.action-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px}.action-card h3{margin:0 0 7px}.meeting-list{background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden}.meeting-row{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:16px}.meeting-row:last-child{border-bottom:0}.meeting-title{font-weight:800}.meeting-meta{color:var(--muted);font-size:14px;margin-top:4px}.empty{padding:35px;text-align:center;color:var(--muted)}.modal{position:fixed;inset:0;background:rgba(8,22,38,.45);display:none;place-items:center;padding:16px;z-index:30}.modal.show{display:grid}.modal-card{width:min(520px,100%);background:#fff;border-radius:18px;padding:26px}.modal-head{display:flex;justify-content:space-between;align-items:center}.modal-head h2{margin:0}.x{border:0;background:#f2f5f8;width:36px;height:36px;border-radius:50%;cursor:pointer}.pill{display:inline-flex;padding:5px 9px;border-radius:999px;background:#edf6ff;color:var(--blue);font-size:12px;font-weight:800}.classroom-page{min-height:calc(100vh - 78px);background:#0b1c30;color:#fff}.classroom-shell{width:min(1440px,100%);margin:auto;padding:18px}.classroom-head{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:8px 4px 16px}.classroom-title{font-weight:800}.classroom-sub{font-size:13px;color:#9fb0c3;margin-top:3px}.live-status{display:inline-flex;align-items:center;gap:7px;font-size:12px;color:#a9c1d9}.live-status i{width:8px;height:8px;border-radius:50%;background:#34c77b}.classroom-main{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:16px}.video-stage{background:#10263f;border:1px solid #29415b;border-radius:16px;min-height:calc(100vh - 190px);padding:14px;display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px;align-content:start}.video-tile{position:relative;background:#071321;border-radius:13px;overflow:hidden;aspect-ratio:16/10;display:grid;place-items:center}.video-tile video{width:100%;height:100%;object-fit:cover}.video-placeholder{display:grid;place-items:center;text-align:center;color:#aab9c9}.avatar{width:62px;height:62px;border-radius:50%;display:grid;place-items:center;background:#f0ad32;color:#10263f;font-weight:900;font-size:20px;margin-bottom:8px}.tile-name{position:absolute;left:10px;bottom:9px;background:rgba(0,0,0,.52);padding:5px 8px;border-radius:7px;font-size:12px}.self-badge{position:absolute;right:10px;top:9px;background:rgba(23,105,211,.9);padding:5px 8px;border-radius:7px;font-size:11px}.side-panel{background:#fff;color:var(--ink);border-radius:16px;padding:16px;display:flex;flex-direction:column}.side-panel h3{margin:0 0 12px}.participant-list{display:grid;gap:8px}.participant{padding:10px 11px;border:1px solid var(--line);border-radius:10px;display:flex;align-items:center;gap:9px}.participant-avatar{width:30px;height:30px;border-radius:50%;background:#edf3fa;display:grid;place-items:center;color:var(--navy);font-size:11px;font-weight:800}.controls{position:fixed;left:50%;bottom:20px;transform:translateX(-50%);background:rgba(9,25,43,.94);border:1px solid #2b435d;border-radius:18px;padding:10px;display:flex;gap:8px;z-index:20;box-shadow:0 15px 40px rgba(0,0,0,.25)}.control{width:48px;height:48px;border:1px solid #35506b;border-radius:12px;background:#16304b;color:#fff;cursor:pointer}.control.active{background:var(--blue)}.control.leave{background:#b72d35;border-color:#b72d35}.classroom-notice{padding:12px 14px;border-radius:10px;background:#f6f9fc;border:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.5;margin-top:auto}.error-banner{background:#fff1f1;color:#8b2222;border:1px solid #f1c4c4;padding:10px;border-radius:10px;font-size:13px;margin-bottom:10px}@media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px}.cards{grid-template-columns:1fr}.classroom-main{grid-template-columns:1fr}.side-panel{order:-1}.video-stage{min-height:60vh}.controls{bottom:10px}.brand img{width:175px}}@media(max-width:560px){.container{width:min(100% - 24px,1180px)}.navlinks a:not(.nav-cta){display:none}.hero{padding:55px 0}.hero h1{font-size:48px}.footer-row{flex-direction:column}.video-stage{grid-template-columns:1fr}.control{width:44px;height:44px}.controls{gap:5px;padding:8px}}

/* Phase 3 classroom */
.classroom-brand img{width:170px;height:auto;display:block;margin-bottom:8px}.classroom-left{min-width:0}.side-tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin:-16px -16px 14px;padding:8px}.side-tab{flex:1;border:0;background:transparent;border-radius:9px;padding:10px 7px;font-weight:750;color:var(--muted);cursor:pointer}.side-tab.active{background:#edf3fa;color:var(--navy)}.side-content{min-height:0;display:flex;flex-direction:column;gap:10px;flex:1}.host-tools{border:1px solid var(--line);border-radius:11px;padding:10px;display:grid;gap:7px;background:#f8fafc}.host-label{font-size:11px;text-transform:uppercase;letter-spacing:.08em;font-weight:800;color:var(--muted)}.small-btn{border:1px solid #d5dde7;background:#fff;border-radius:8px;padding:8px 10px;text-align:left;cursor:pointer;font-weight:700;color:var(--ink)}.small-btn:hover{border-color:#b9c7d7}.participant-name{flex:1}.hand-badge{font-size:15px}.chat-messages{flex:1;min-height:280px;max-height:calc(100vh - 360px);overflow:auto;display:flex;flex-direction:column;gap:8px;padding:2px}.chat-message{background:#f4f7fa;border-radius:10px;padding:8px 10px;font-size:13px;line-height:1.4}.chat-message.self{background:#eaf3ff}.chat-name{font-size:11px;font-weight:800;color:var(--navy);margin-bottom:2px}.chat-form{display:flex;gap:7px}.chat-form input{min-width:0;flex:1;border:1px solid #ccd5df;border-radius:9px;padding:10px}.chat-form .btn{padding:10px 13px}.attendance-summary{display:flex;align-items:baseline;gap:7px;padding:12px;background:#f4f7fa;border-radius:10px}.attendance-summary strong{font-size:24px;color:var(--navy)}.attendance-summary span{font-size:12px;color:var(--muted)}.attendance-list{display:grid;gap:7px;overflow:auto}.attendance-row{display:flex;justify-content:space-between;align-items:center;border:1px solid var(--line);border-radius:9px;padding:9px 10px;font-size:13px}.attendance-live{font-size:11px;color:var(--ok);font-weight:800}.controls{gap:7px}.control.active{background:var(--blue)}
@media(max-width:900px){.classroom-brand img{width:145px}.chat-messages{max-height:35vh}}


/* Learnop Meet Phase 5 visual system — reference-matched classroom */
:root{--lm-bg:#031b3c;--lm-panel:#061f46;--lm-panel2:#082753;--lm-line:#155a9a;--lm-blue:#0f63d8;--lm-gold:#ffb51b;--lm-text:#f5f8ff;--lm-muted:#a9bdd8}
.classroom-page{background:linear-gradient(135deg,#03132e,#052451 58%,#031734);color:var(--lm-text);min-height:100vh;overflow:hidden}
.app-header{height:108px;border-bottom:1px solid #154271;display:grid;grid-template-columns:360px minmax(300px,1fr) auto;align-items:center;gap:28px;padding:0 34px;background:rgba(2,19,45,.88)}
.brand-wrap{display:flex;align-items:center;height:100%}.brand-image{width:315px;height:81px;object-fit:contain;object-position:left center;display:block}.meeting-card{height:70px;width:min(365px,100%);border:1px solid #0d66ad;border-radius:14px;display:flex;align-items:center;gap:14px;padding:0 18px;background:rgba(2,31,66,.58);box-shadow:inset 0 1px 0 rgba(255,255,255,.03)}.status-dot{width:20px;height:20px;border-radius:50%;background:#18d18a;box-shadow:0 0 0 4px rgba(24,209,138,.08);flex:none}.meeting-title{font-size:16px;font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.meeting-code{font-size:13px;color:#a8bfdc;margin-top:4px}.copy-code{border:0;background:transparent;color:#fff;cursor:pointer;margin-left:5px}.header-right{display:flex;align-items:center;gap:24px}.live-status{color:#20d48b;font-size:14px}.live-status i{width:10px;height:10px;background:#20d48b}.timer{border:2px solid var(--lm-gold);color:var(--lm-gold);font-weight:800;padding:10px 20px;border-radius:24px;min-width:104px;text-align:center}.user-chip{display:flex;align-items:center;gap:9px;color:#eef4ff;font-size:14px}.user-avatar{width:46px;height:46px;border-radius:50%;border:2px solid #eaf2ff;display:grid;place-items:center;font-weight:800;background:#06265a}.app-layout{display:grid;grid-template-columns:182px minmax(0,1fr);min-height:calc(100vh - 108px)}.sidebar{padding:26px 10px 20px;border-right:1px solid #103a69;display:flex;flex-direction:column;gap:9px;background:rgba(2,17,42,.55)}.side-link{display:flex;align-items:center;gap:14px;padding:14px 18px;border-radius:9px;color:#eef4ff;text-decoration:none;font-size:14px}.side-link span{font-size:24px;width:28px;text-align:center}.side-link.active{background:linear-gradient(90deg,#0b4ea8,#0b3e87);border-left:3px solid var(--lm-gold);padding-left:15px}.side-spacer{flex:1}.workspace{display:grid;grid-template-columns:minmax(0,1fr) 445px;gap:12px;padding:0 14px 30px 14px;min-width:0}.video-panel{min-width:0;border:1px solid #11558e;border-radius:13px;margin-top:0;background:rgba(2,24,51,.45);padding:14px}.video-stage{background:linear-gradient(145deg,#061c3d,#03152e);border:0;border-radius:11px;min-height:calc(100vh - 230px);padding:12px;display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:12px;align-content:start}.video-tile{border-radius:10px;aspect-ratio:16/9;background:#09172b;border:1px solid #133c63;overflow:hidden;box-shadow:0 10px 30px rgba(0,0,0,.2)}.video-tile video{width:100%;height:100%;object-fit:cover}.tile-name{left:10px;bottom:10px;background:rgba(1,11,25,.72);font-size:13px;padding:7px 10px;border-radius:8px}.self-badge{top:10px;right:10px;background:#ffb51b;color:#12213c;font-weight:800}.right-panel{margin-top:0;border:1px solid #11558e;border-radius:13px;background:linear-gradient(180deg,#041d42,#031a38);min-height:calc(100vh - 138px);display:flex;flex-direction:column;overflow:hidden}.panel-tabs{display:grid;grid-template-columns:1fr 1fr 1fr;border-bottom:1px solid #164e80}.panel-tab{position:relative;border:0;background:transparent;color:#f2f6ff;padding:20px 10px 16px;font-size:15px;cursor:pointer}.panel-tab span{margin-right:8px}.panel-tab b{display:inline-grid;place-items:center;min-width:20px;height:20px;padding:0 5px;border-radius:10px;background:#0e5cc0;font-size:11px;margin-left:4px}.panel-tab.active{color:var(--lm-gold);font-weight:800}.panel-tab.active:after{content:"";position:absolute;left:18px;right:18px;bottom:0;height:3px;background:var(--lm-gold)}.panel-view{display:flex;flex-direction:column;flex:1;min-height:0;padding:18px 18px 16px}.panel-heading h2{margin:0;font-size:19px}.panel-heading p{margin:5px 0 0;color:#9fb4cf;font-size:12px;line-height:1.4}.panel-heading{margin-bottom:14px}.chat-messages{flex:1;min-height:0;max-height:none;overflow:auto;display:flex;flex-direction:column;gap:13px;padding:4px 3px 12px}.chat-message{display:grid;grid-template-columns:44px minmax(0,1fr);gap:10px;background:transparent;padding:0;align-items:start}.chat-avatar{width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:#0b6edc;color:white;font-weight:800}.chat-message:nth-child(3n) .chat-avatar{background:#6842e8}.chat-message:nth-child(3n+1) .chat-avatar{background:#0c77d9}.chat-message:nth-child(3n+2) .chat-avatar{background:#10a7a7}.chat-bubble{border:1px solid #165b96;border-radius:10px;background:linear-gradient(180deg,#082653,#062044);padding:11px 13px}.chat-message.self .chat-bubble{background:linear-gradient(180deg,#092b59,#08264d)}.chat-meta{display:flex;align-items:center;gap:9px;margin-bottom:6px}.chat-meta strong{font-size:13px;color:#29b7ff}.chat-message.self .chat-meta strong{color:#23a8ff}.chat-meta span{font-size:10px;color:#6f8bab}.chat-text{font-size:14px;color:#f2f6ff;line-height:1.45}.chat-form{display:flex;align-items:center;gap:9px;border:1px solid #155b9a;background:#061e40;border-radius:11px;padding:8px 9px;margin-top:8px}.chat-emoji{width:30px;text-align:center;font-size:22px;color:#e8f0fb}.chat-form input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:#fff;font-size:14px;padding:8px}.chat-form input::placeholder{color:#6e94bc}.send-btn{width:42px;height:42px;border:0;border-radius:9px;background:#176ee1;color:#fff;font-size:21px;cursor:pointer}.send-btn:disabled{opacity:.55}.participant-list{display:grid;gap:9px;overflow:auto}.participant{padding:12px;border:1px solid #174a7b;border-radius:10px;display:flex;align-items:center;gap:10px;background:#062044}.participant-avatar{width:36px;height:36px;background:#0e5cc0;color:#fff}.participant-name{font-size:13px}.host-tools{border:1px solid #174a7b;background:#062044;border-radius:10px;padding:12px;display:grid;gap:8px;margin-bottom:12px}.host-btn{background:#082a55;border:1px solid #1b609c;color:#eaf2ff;border-radius:8px;padding:9px;text-align:left;cursor:pointer}.host-label{color:#9db5d0;font-size:10px;text-transform:uppercase;letter-spacing:.08em;font-weight:800}.attendance-summary{display:flex;align-items:baseline;gap:9px;padding:14px;border:1px solid #174a7b;background:#062044;border-radius:10px}.attendance-summary strong{font-size:28px;color:#fff}.attendance-summary span{font-size:12px;color:#9db5d0}.attendance-list{display:grid;gap:8px;overflow:auto;margin-top:12px}.attendance-row{display:flex;justify-content:space-between;align-items:center;border:1px solid #174a7b;background:#062044;border-radius:9px;padding:11px;font-size:13px}.attendance-live{color:#21d28a}.bottom-controls{position:fixed;left:calc(182px + (100vw - 182px)/2);bottom:22px;transform:translateX(-50%);display:flex;align-items:stretch;gap:10px;padding:9px 12px;background:rgba(2,20,42,.96);border:1px solid #15507f;border-radius:15px;z-index:50;box-shadow:0 18px 50px rgba(0,0,0,.4)}.control,.action-control,.leave-control{width:76px;min-height:70px;border:1px solid #0f4b7c;border-radius:10px;background:#06234a;color:#fff;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;position:relative}.control span,.action-control span,.leave-control span{font-size:23px}.control small,.action-control small,.leave-control small{font-size:11px;color:#eaf2ff}.control.active{background:#0b62cf}.action-control{border-color:#f0aa16;background:#062044;color:#ffb51b}.action-control small{color:#ffb51b}.leave-control{background:#e22932;border-color:#e22932}.leave-control small{color:#fff}.control-divider{width:1px;background:#1a4a72;margin:6px 4px}.control b{position:absolute;right:9px;top:7px;background:#0d6ce0;color:#fff;font-size:10px;min-width:18px;height:18px;border-radius:9px;display:grid;place-items:center}.error-banner{background:#4b1d24;color:#ffdce0;border-color:#8f3340}.classroom-notice{display:none}
@media(max-width:1180px){.app-header{grid-template-columns:280px 330px auto;padding:0 20px}.brand-image{width:260px}.workspace{grid-template-columns:minmax(0,1fr) 360px}.bottom-controls{left:calc(182px + (100vw - 182px - 360px)/2)}}
@media(max-width:900px){.app-header{height:82px;grid-template-columns:1fr auto;padding:0 14px}.brand-image{width:210px;height:62px}.meeting-card{display:none}.header-right{gap:8px}.live-status{display:none}.timer{padding:8px 12px;min-width:auto}.user-chip span:nth-child(2),.user-chip>span:last-child{display:none}.app-layout{grid-template-columns:1fr}.sidebar{display:none}.workspace{grid-template-columns:1fr;padding:10px}.right-panel{min-height:420px}.video-stage{min-height:55vh}.bottom-controls{left:50%;bottom:8px;gap:5px;padding:7px;max-width:calc(100vw - 14px);overflow:auto}.control,.action-control,.leave-control{width:62px;min-width:62px;min-height:62px}.control small,.action-control small,.leave-control small{font-size:9px}.control-divider{display:none}}
@media(max-width:620px){.brand-image{width:175px}.header-right .timer{display:none}.workspace{padding:7px}.video-panel{padding:7px}.video-stage{grid-template-columns:1fr;padding:7px;gap:8px}.right-panel{min-height:390px}.panel-tab{font-size:12px;padding:14px 4px}.panel-tab span{display:none}.bottom-controls{width:calc(100vw - 10px)}.control,.action-control,.leave-control{width:54px;min-width:54px}.control span,.action-control span,.leave-control span{font-size:19px}}

/* Learnop Meet landing — simple classic entry */
.landing-page{min-height:100vh;background:linear-gradient(135deg,#031a3b 0%,#06295a 52%,#041735 100%);color:#fff;overflow-x:hidden}.landing-header{height:92px;border-bottom:1px solid rgba(88,160,224,.22);background:rgba(2,18,43,.48);position:relative;z-index:2}.landing-nav{height:100%;display:flex;align-items:center;justify-content:space-between}.landing-brand img{width:255px;height:auto;display:block}.landing-signin{color:#f4f8ff;border:1px solid rgba(255,255,255,.22);padding:10px 18px;border-radius:10px;font-weight:700}.landing-main{min-height:calc(100vh - 148px)}.landing-hero{position:relative;min-height:calc(100vh - 148px);display:flex;align-items:center;padding:65px 0}.landing-content{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.72fr);gap:90px;align-items:center;position:relative;z-index:1}.landing-glow{position:absolute;width:520px;height:520px;border-radius:50%;background:rgba(20,113,219,.13);filter:blur(10px);left:-180px;top:50%;transform:translateY(-50%)}.landing-kicker{color:#f5b72d;font-size:12px;font-weight:800;letter-spacing:.18em;margin-bottom:18px}.landing-copy h1{font-size:clamp(50px,6vw,78px);line-height:1.02;letter-spacing:-3px;margin:0 0 22px}.landing-copy h1 span{color:#f6b72e}.landing-copy p{max-width:610px;font-size:19px;line-height:1.65;color:#b9cbe1;margin:0}.landing-actions{display:flex;gap:14px;margin-top:34px}.landing-primary,.landing-secondary{min-width:175px;padding:15px 22px;border-radius:11px;text-align:center;font-weight:800}.landing-primary{background:#f4b329;color:#061a39;box-shadow:0 12px 30px rgba(244,179,41,.18)}.landing-secondary{border:1px solid #2874bd;background:rgba(7,39,82,.68);color:#fff}.landing-note{margin-top:20px;color:#829cba;font-size:13px}.landing-card{border:1px solid #1762a5;background:linear-gradient(180deg,rgba(8,40,84,.92),rgba(4,25,55,.94));border-radius:22px;padding:24px;box-shadow:0 25px 70px rgba(0,0,0,.28)}.landing-card-top{display:flex;align-items:center;gap:10px;border-bottom:1px solid rgba(111,173,224,.18);padding-bottom:17px;font-weight:800}.live-dot{width:11px;height:11px;border-radius:50%;background:#1bd58c;box-shadow:0 0 0 5px rgba(27,213,140,.09)}.secure{margin-left:auto;font-size:11px;color:#8faac7;font-weight:600}.landing-card-body{text-align:center;padding:54px 20px 32px}.mini-avatar{width:82px;height:82px;border-radius:50%;display:grid;place-items:center;margin:0 auto 18px;background:linear-gradient(135deg,#176fe0,#0a4da4);border:2px solid #f4b329;color:#fff;font-size:23px;font-weight:900}.landing-card-body h2{margin:0;font-size:27px}.landing-card-body p{margin:9px auto 0;color:#9fb8d3;line-height:1.55;max-width:300px}.mini-row{display:flex;justify-content:center;gap:12px;margin-top:26px}.mini-row span{width:43px;height:43px;border-radius:10px;display:grid;place-items:center;background:#082e5f;border:1px solid #17558e}.landing-footer{height:56px;color:#7992ad;font-size:12px}.landing-footer .container{display:flex;justify-content:space-between;align-items:center}.landing-page .brand-mark{display:none}@media(max-width:900px){.landing-content{grid-template-columns:1fr;gap:42px}.landing-card{max-width:560px}.landing-hero{padding:55px 0}.landing-brand img{width:210px}}@media(max-width:560px){.landing-header{height:78px}.landing-brand img{width:175px}.landing-signin{padding:8px 13px;font-size:13px}.landing-copy h1{font-size:48px;letter-spacing:-2px}.landing-copy p{font-size:16px}.landing-actions{flex-direction:column}.landing-primary,.landing-secondary{width:100%}.landing-footer .container{flex-direction:column;gap:5px;align-items:flex-start}.landing-card-body{padding-top:38px}}

.simple-modal{position:fixed;inset:0;background:rgba(2,14,32,.72);display:grid;place-items:center;z-index:1000;padding:20px}.simple-modal[hidden]{display:none}.simple-modal-card{position:relative;width:min(480px,100%);background:#fff;border-radius:24px;padding:34px;box-shadow:0 30px 90px rgba(0,0,0,.35)}.simple-close{position:absolute;right:16px;top:12px;border:0;background:transparent;font-size:30px;cursor:pointer;color:#17345b}.landing-nav-actions{display:flex;align-items:center;gap:16px}.signed-in-label{font-size:13px;color:#5d6f88}.landing-mark{width:90px;height:90px;object-fit:contain;margin-bottom:18px}.error-banner{display:flex!important;align-items:center;justify-content:space-between;gap:14px}.error-banner button{border:1px solid currentColor;border-radius:8px;padding:7px 12px;background:transparent;color:inherit;cursor:pointer;white-space:nowrap}.landing-primary,.landing-secondary{cursor:pointer;font:inherit}@media(max-width:700px){.landing-card{display:none}.landing-nav-actions .signed-in-label{display:none}.simple-modal-card{padding:28px 22px}}
/* Phase 5.1 functional/mobile polish */
.prejoin-overlay{position:fixed;inset:0;z-index:200;background:rgba(3,17,36,.97);display:grid;place-items:center;padding:20px;overflow:auto}.prejoin-overlay.hidden{display:none}.prejoin-card{width:min(520px,100%);background:linear-gradient(180deg,#082653,#041a37);border:1px solid #1c65a5;border-radius:22px;padding:28px;box-shadow:0 30px 90px rgba(0,0,0,.5);text-align:center}.prejoin-logo{width:150px;height:auto;max-height:80px;object-fit:contain;margin:0 auto 8px}.prejoin-kicker{font-size:11px;letter-spacing:.16em;font-weight:800;color:#f4b32d;margin-top:6px}.prejoin-card h1{font-size:28px;margin:10px 0 7px}.prejoin-card p{color:#a9c0d8;margin:0 0 18px;line-height:1.5}.prejoin-preview{position:relative;aspect-ratio:16/9;border-radius:15px;overflow:hidden;background:#071321;border:1px solid #194f80;display:grid;place-items:center}.prejoin-preview video{width:100%;height:100%;object-fit:cover}.prejoin-preview #previewPlaceholder{position:absolute;color:#91aac5;font-size:13px}.prejoin-status{margin:12px 0;color:#b9cee2;font-size:13px}.prejoin-actions{display:grid;gap:9px}.prejoin-primary,.prejoin-secondary{width:100%;border-radius:11px;padding:13px 16px;cursor:pointer;font-weight:800}.prejoin-primary{border:0;background:#f4b32d;color:#061b38}.prejoin-secondary{border:1px solid #286aa3;background:#06234a;color:#fff}.prejoin-error{margin-top:12px;padding:11px;border-radius:10px;background:#4a1d25;border:1px solid #8f3440;color:#ffdfe2;font-size:13px}.video-tile.camera-off:before{content:'Camera off';position:absolute;z-index:2;left:50%;top:50%;transform:translate(-50%,-50%);background:rgba(3,18,36,.8);padding:8px 11px;border-radius:9px;color:#c5d6e8;font-size:12px}.video-tile.camera-off video{opacity:.15}.error-banner[hidden]{display:none!important}
@media(max-width:900px){body.classroom-page{padding-bottom:82px}.app-header{position:sticky;top:0;z-index:60}.workspace{padding-bottom:0}.video-panel{min-height:calc(100svh - 180px)}.right-panel{position:relative;min-height:360px;max-height:52svh;overflow:hidden}.panel-view{height:calc(52svh - 58px);overflow:auto}.chat-messages{max-height:none;min-height:180px}.bottom-controls{position:fixed;left:0;right:0;bottom:0;transform:none;width:100%;max-width:none;border-radius:14px 14px 0 0;padding:7px 6px;justify-content:flex-start;overflow-x:auto;scrollbar-width:none;background:rgba(2,18,38,.98)}.bottom-controls::-webkit-scrollbar{display:none}.control,.action-control,.leave-control{flex:0 0 62px;width:62px;min-width:62px;min-height:58px}.control-divider{display:block;flex:0 0 1px}.right-panel{order:2}.video-panel{order:1}.workspace{display:flex;flex-direction:column}.video-stage{min-height:42svh;grid-template-columns:repeat(2,minmax(0,1fr));align-content:start}.video-tile{aspect-ratio:16/11}.prejoin-card{padding:22px}.prejoin-overlay{align-items:center}}
@media(max-width:560px){.app-header{height:70px;padding:0 10px;grid-template-columns:1fr auto}.brand-image{width:150px;height:52px}.header-right{gap:5px}.user-avatar{width:36px;height:36px}.meeting-card{display:none}.video-panel{padding:5px}.video-stage{grid-template-columns:1fr 1fr;gap:6px;padding:6px;border-radius:11px;min-height:40svh}.video-tile{aspect-ratio:1.05}.tile-name{font-size:10px;left:6px;bottom:6px}.self-badge{font-size:9px;right:6px;top:6px}.avatar{width:46px;height:46px;font-size:16px}.right-panel{min-height:330px;max-height:48svh;border-radius:12px}.panel-tabs{height:52px}.panel-tab{padding:12px 3px;font-size:11px}.panel-heading h2{font-size:16px}.chat-text{font-size:13px}.chat-avatar{width:34px;height:34px;font-size:11px}.chat-bubble{padding:9px 10px}.chat-form{position:sticky;bottom:0;background:#061e40}.control,.action-control,.leave-control{flex-basis:55px;width:55px;min-width:55px;min-height:55px}.control span,.action-control span,.leave-control span{font-size:17px}.control small,.action-control small,.leave-control small{font-size:8px}.prejoin-logo{width:120px}.prejoin-card h1{font-size:24px}.prejoin-preview{aspect-ratio:4/3}}
@media(max-width:380px){.brand-image{width:132px}.video-stage{grid-template-columns:1fr}.right-panel{max-height:46svh}.control,.action-control,.leave-control{flex-basis:52px;width:52px;min-width:52px}}


/* Learnop Meet — compact professional classroom controls */
.site-footer{padding:20px 16px 26px;text-align:center;color:#7890a9;font-size:12px;letter-spacing:.02em;background:transparent}
.classroom-page .site-footer{background:#071a2e;color:#718aa5;border-top:1px solid rgba(55,105,151,.18)}
.bottom-controls{position:sticky;left:auto;bottom:10px;transform:none;width:max-content;max-width:calc(100% - 28px);margin:12px auto 10px;padding:7px 9px;gap:7px;border-radius:14px;box-shadow:0 12px 32px rgba(0,0,0,.32);z-index:40;align-items:center}
.control,.action-control,.leave-control{width:58px;min-width:58px;min-height:54px;height:54px;border-radius:10px;gap:4px}
.control span,.action-control span,.leave-control span{font-size:19px;line-height:1}
.control small,.action-control small,.leave-control small{font-size:9px;line-height:1.1;white-space:nowrap}
.control b{right:6px;top:5px;min-width:16px;height:16px;font-size:9px}
.control-divider{margin:5px 2px}
.action-control,.leave-control{width:62px;min-width:62px}
@media(max-width:900px){
  body.classroom-page{padding-bottom:0}
  .bottom-controls{position:sticky;left:auto;right:auto;bottom:8px;transform:none;width:calc(100% - 16px);max-width:none;margin:10px auto 8px;padding:6px;overflow-x:auto;justify-content:flex-start;scrollbar-width:none}
  .bottom-controls::-webkit-scrollbar{display:none}
  .control,.action-control,.leave-control{flex:0 0 54px;width:54px;min-width:54px;height:52px;min-height:52px}
  .action-control,.leave-control{flex-basis:58px;width:58px;min-width:58px}
  .control span,.action-control span,.leave-control span{font-size:17px}
  .control small,.action-control small,.leave-control small{font-size:8px}
  .control-divider{display:block;flex:0 0 1px}
}
@media(max-width:560px){
  .bottom-controls{gap:4px;border-radius:12px}
  .control,.action-control,.leave-control{flex-basis:50px;width:50px;min-width:50px;height:49px;min-height:49px;border-radius:9px}
  .action-control,.leave-control{flex-basis:54px;width:54px;min-width:54px}
  .control span,.action-control span,.leave-control span{font-size:15px}
  .control small,.action-control small,.leave-control small{font-size:7px}
}

/* Learnop Meet — clean navigation and efficient classroom layout */
.landing-simple-content{grid-template-columns:1fr;max-width:920px}.landing-simple-hero{min-height:calc(100vh - 134px);display:flex;align-items:center}.landing-simple-hero .landing-copy{max-width:760px}.landing-simple-hero .landing-copy p{max-width:650px}.landing-simple-hero .landing-actions{margin-top:30px}
.dashboard-simple{padding-top:64px;padding-bottom:48px}.dash-welcome{display:flex;justify-content:space-between;align-items:end;margin-bottom:28px}.dashboard-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-bottom:42px}.dashboard-action{display:flex;align-items:center;gap:16px;padding:20px 22px;border-radius:16px;text-decoration:none;cursor:pointer;text-align:left;font:inherit}.dashboard-action.primary{border:1px solid #1c70b5;background:linear-gradient(135deg,#0c4f9f,#082f68);color:#fff}.dashboard-action.secondary{border:1px solid #d8e0ea;background:#fff;color:#122d50}.dashboard-action strong{display:block;font-size:16px}.dashboard-action small{display:block;margin-top:4px;color:#a9c0d8;font-size:12px}.dashboard-action.secondary small{color:#6c7e94}.action-icon{width:38px;height:38px;border-radius:11px;display:grid;place-items:center;font-size:22px;background:rgba(255,255,255,.12);color:#f4b32d;flex:none}.dashboard-action.secondary .action-icon{background:#edf3fa}.meetings-section{border-top:1px solid #e3e9f1;padding-top:28px}.section-heading h2{margin:0}.section-heading{margin-bottom:16px}
.app-layout-clean{display:block;min-height:calc(100vh - 108px)}.app-layout-clean .workspace{grid-template-columns:minmax(0,1fr) 400px;padding:14px 18px 18px;min-height:calc(100vh - 108px)}.app-layout-clean .video-panel{margin:0;min-height:0}.app-layout-clean .right-panel{margin:0;min-height:0;height:calc(100vh - 140px)}.app-layout-clean .video-stage{min-height:calc(100vh - 205px)}
.classroom-page>.site-footer{margin-top:0}.classroom-page .bottom-controls{position:sticky;bottom:10px}
@media(max-width:1050px){.app-layout-clean .workspace{grid-template-columns:minmax(0,1fr) 350px}.app-layout-clean .right-panel{height:calc(100vh - 140px)}}
@media(max-width:900px){.landing-simple-hero{min-height:calc(100svh - 134px)}.dashboard-simple{padding-top:38px}.dashboard-actions{grid-template-columns:1fr}.app-layout-clean .workspace{display:flex;flex-direction:column;padding:8px;gap:8px;min-height:0}.app-layout-clean .video-panel{order:1}.app-layout-clean .right-panel{order:2;height:46svh;min-height:320px}.app-layout-clean .video-stage{min-height:0;max-height:calc(100svh - 250px);overflow:auto}.classroom-page .bottom-controls{position:sticky;bottom:6px;margin-top:6px}}
@media(max-width:560px){.landing-simple-hero{padding:34px 0}.landing-simple-hero .landing-copy h1{font-size:44px}.landing-simple-hero .landing-actions{gap:10px}.dashboard-simple{padding:28px 0 36px}.dashboard-action{padding:16px}.app-layout-clean .workspace{padding:5px}.app-layout-clean .video-stage{grid-template-columns:1fr 1fr;gap:6px;padding:5px;max-height:42svh}.app-layout-clean .right-panel{height:43svh;min-height:300px}.app-layout-clean .panel-tabs{height:48px}.app-layout-clean .panel-tab{font-size:11px;padding:10px 2px}.app-layout-clean .panel-view{padding:12px 10px}.app-layout-clean .chat-form{margin-top:5px}.classroom-page .bottom-controls{width:calc(100% - 8px);max-width:none;margin:5px auto;padding:5px;gap:3px}.classroom-page .control,.classroom-page .action-control,.classroom-page .leave-control{flex:0 0 48px;width:48px;min-width:48px;height:47px;min-height:47px}.classroom-page .action-control,.classroom-page .leave-control{flex-basis:52px;width:52px;min-width:52px}.classroom-page .control span,.classroom-page .action-control span,.classroom-page .leave-control span{font-size:14px}.classroom-page .control small,.classroom-page .action-control small,.classroom-page .leave-control small{font-size:7px}.site-footer{padding:14px 12px 18px}}
@media(max-width:380px){.app-layout-clean .video-stage{grid-template-columns:1fr}.app-layout-clean .right-panel{height:44svh}.classroom-page .control,.classroom-page .action-control,.classroom-page .leave-control{flex-basis:45px;width:45px;min-width:45px}.classroom-page .action-control,.classroom-page .leave-control{flex-basis:49px;width:49px;min-width:49px}}

/* Learnop Meet final compact classroom layout */
.landing-simple-hero .landing-copy p{font-size:16px;margin-top:14px}.landing-simple-hero .landing-copy h1{font-size:clamp(44px,6vw,68px)}
.dashboard-simple .dash-welcome{margin-bottom:20px}.dashboard-simple .dashboard-actions{margin-bottom:28px}.dashboard-simple .dashboard-action{min-height:76px}.dashboard-simple .meetings-section{padding-top:20px}
.classroom-page{overflow-x:hidden}.app-layout-clean .workspace{padding-bottom:6px}.app-layout-clean .right-panel{min-width:0}.bottom-controls{width:auto;max-width:min(760px,calc(100% - 24px));padding:6px 8px;gap:5px;border-radius:13px}.control,.action-control,.leave-control{width:50px;min-width:50px;height:48px;min-height:48px;border-radius:9px}.action-control,.leave-control{width:56px;min-width:56px}.control span,.action-control span,.leave-control span{font-size:15px}.control small,.action-control small,.leave-control small{font-size:7px}.control-divider{height:32px;margin:0 1px}
@media(max-width:900px){.app-layout-clean .workspace{padding:5px;gap:7px}.app-layout-clean .video-stage{max-height:none;min-height:38svh}.app-layout-clean .right-panel{height:43svh;min-height:280px}.bottom-controls{position:sticky;bottom:6px;margin:5px auto 7px;width:calc(100% - 12px);max-width:none;overflow-x:auto;justify-content:flex-start}.control,.action-control,.leave-control{flex:0 0 48px;width:48px;min-width:48px;height:46px;min-height:46px}.action-control,.leave-control{flex-basis:52px;width:52px;min-width:52px}.control span,.action-control span,.leave-control span{font-size:14px}.control small,.action-control small,.leave-control small{font-size:7px}.app-header .meeting-card{display:flex;min-width:0}.app-header .meeting-title{max-width:28vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.header-right .user-chip{display:none}}
@media(max-width:560px){.landing-simple-hero .landing-copy h1{font-size:40px;letter-spacing:-1.8px}.landing-simple-hero .landing-copy p{font-size:15px}.landing-simple-hero .landing-actions .landing-primary,.landing-simple-hero .landing-actions .landing-secondary{padding:11px 15px}.app-header{padding:0 8px}.app-header .meeting-card{display:none}.header-right .live-status{font-size:10px}.header-right .timer{font-size:11px}.app-layout-clean .video-stage{grid-template-columns:1fr 1fr;gap:5px;padding:5px;min-height:34svh}.app-layout-clean .right-panel{height:46svh;min-height:285px}.panel-tabs{height:46px}.panel-tab{font-size:10px;padding:9px 2px}.panel-view{padding:10px}.bottom-controls{gap:3px;padding:5px 4px}.control,.action-control,.leave-control{flex-basis:45px;width:45px;min-width:45px;height:44px;min-height:44px}.action-control,.leave-control{flex-basis:50px;width:50px;min-width:50px}.control span,.action-control span,.leave-control span{font-size:13px}.control small,.action-control small,.leave-control small{font-size:6.5px}}
@media(max-width:380px){.app-layout-clean .video-stage{grid-template-columns:1fr}.app-layout-clean .right-panel{height:44svh}.bottom-controls{width:calc(100% - 8px)}.control,.action-control,.leave-control{flex-basis:43px;width:43px;min-width:43px}.action-control,.leave-control{flex-basis:48px;width:48px;min-width:48px}}


/* Final Phase 5 panel and control behavior */
[hidden]{display:none!important}
.controls-toggle{position:fixed;right:16px;bottom:16px;width:40px;height:40px;border:1px solid #36526d;border-radius:50%;background:rgba(9,25,43,.96);color:#fff;display:grid;place-items:center;font-size:17px;cursor:pointer;z-index:60;box-shadow:0 8px 22px rgba(0,0,0,.3)}
.controls-toggle:hover{background:#163b61}
.bottom-controls.controls-hidden{display:none}
.panel-view{overflow:auto}
@media(max-width:560px){.controls-toggle{right:10px;bottom:10px;width:38px;height:38px;font-size:16px}.bottom-controls{max-width:calc(100% - 58px);margin-right:52px}.panel-view{min-height:0}}

/* Mobile chat usability fix */
.chat-form input{font-size:16px!important;line-height:1.35;min-height:42px;-webkit-appearance:none;}
.chat-form button{min-width:42px;min-height:42px;touch-action:manipulation;}
.chat-messages{-webkit-overflow-scrolling:touch;overscroll-behavior:contain;}
@media(max-width:900px){
  .right-panel{height:min(44svh,520px)!important;max-height:none!important;}
  .panel-view{height:100%!important;min-height:0!important;overflow:hidden!important;}
  .panel-view .chat-messages{min-height:0!important;flex:1 1 auto;overflow-y:auto!important;padding-bottom:16px;}
  .panel-view .chat-form{flex:0 0 auto!important;position:relative!important;bottom:auto!important;margin-bottom:env(safe-area-inset-bottom,0px);z-index:5;}
}
@media(max-width:560px){
  .right-panel{height:min(46svh,480px)!important;}
  .chat-form{padding:6px 7px!important;}
  .chat-form input{min-height:44px!important;padding:9px 8px!important;}
}

/* Learnop Meet mobile/desktop panel overlay: panels appear only after a control is pressed. */
.right-panel[hidden]{display:none!important}
.right-panel{position:fixed!important;z-index:90;right:18px;top:92px;width:min(410px,calc(100vw - 36px));height:min(76vh,720px)!important;max-height:none!important;margin:0!important;border:1px solid #1c65a5;border-radius:18px;background:linear-gradient(180deg,#082653,#041a37);box-shadow:0 24px 70px rgba(0,0,0,.5);overflow:hidden}
.right-panel .panel-view{height:100%!important;min-height:0!important;overflow:hidden!important;padding-top:54px}
.right-panel .panel-view .chat-messages{min-height:0;flex:1 1 auto;overflow-y:auto}
.right-panel .panel-view .chat-form{flex:0 0 auto}
.panel-close{position:absolute;right:12px;top:10px;z-index:95;width:34px;height:34px;border-radius:50%;border:1px solid #3b6287;background:#0a2a50;color:#fff;font-size:22px;line-height:1;cursor:pointer}
.panel-close:hover{background:#174875}
.prejoin-brand{font-size:34px;font-weight:850;letter-spacing:-1.5px;color:#fff;margin:0 auto 12px}.prejoin-brand span{color:#f4b32d}
body.panel-open .controls-toggle{z-index:80}
@media(max-width:900px){
  .right-panel{left:8px;right:8px;top:auto;bottom:8px;width:auto;height:min(68svh,620px)!important;border-radius:18px}
  .right-panel .panel-view{padding-top:54px}
  .panel-close{right:10px;top:9px;width:36px;height:36px}
  .app-layout-clean .workspace{padding-bottom:0}
}
@media(max-width:560px){
  .right-panel{left:6px;right:6px;bottom:6px;height:min(70svh,600px)!important}
  .right-panel .panel-tabs{height:48px}
  .right-panel .panel-tab{font-size:12px}
  .prejoin-brand{font-size:29px}
}

/* Final mobile panel behavior: panels are on-demand overlays, never permanently occupying the classroom. */
.right-panel{display:flex;flex-direction:column}
.right-panel[hidden]{display:none!important}
.right-panel .panel-tabs{flex:0 0 48px}
.right-panel .panel-view{flex:1 1 auto;height:auto!important;min-height:0!important;overflow:hidden!important;padding:14px!important;display:flex;flex-direction:column}
.right-panel .panel-view[hidden]{display:none!important}
.right-panel .chat-messages{flex:1 1 auto;min-height:0;overflow-y:auto!important}
.right-panel .chat-form{flex:0 0 auto;position:relative!important;bottom:auto!important}
@media(max-width:900px){
  .right-panel{top:auto;bottom:8px;left:8px;right:8px;width:auto;height:min(70svh,620px)!important;max-height:none!important}
}
@media(max-width:560px){
  .right-panel{left:5px;right:5px;bottom:5px;height:min(72svh,610px)!important;border-radius:17px}
  .right-panel .panel-tabs{flex-basis:50px}
  .right-panel .panel-view{padding:12px 10px!important}
  .panel-close{width:36px;height:36px}
}


/* Host teaching tools + raised-hand video indicators */
.hand-indicator{position:absolute;left:10px;top:10px;z-index:12;display:grid;place-items:center;width:38px;height:38px;border-radius:50%;background:#f4b32d;color:#082653;font-size:21px;font-weight:800;box-shadow:0 5px 18px rgba(0,0,0,.35);border:2px solid rgba(255,255,255,.8)}
.hand-indicator[hidden]{display:none!important}
.video-tile{position:relative;overflow:hidden}
.host-only-control[hidden],.host-teach-control[hidden]{display:none!important}
.teaching-stage{position:fixed;inset:84px 18px 86px 18px;z-index:120;background:#041a37;border:1px solid #236aa5;border-radius:18px;box-shadow:0 28px 80px rgba(0,0,0,.6);display:flex;flex-direction:column;overflow:hidden}
.teaching-stage[hidden]{display:none!important}
.teaching-head{height:52px;flex:0 0 52px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;background:#082653;border-bottom:1px solid #1d5e92;color:#fff}
.teaching-head button{width:34px;height:34px;border-radius:50%;border:1px solid #426783;background:#0d3158;color:#fff;font-size:22px;cursor:pointer}
.teaching-content{flex:1;min-height:0;display:grid;place-items:center;overflow:auto;padding:12px;background:#021329}
.teaching-content img{max-width:100%;max-height:100%;object-fit:contain;border-radius:8px}
.teaching-content video{max-width:100%;max-height:100%;width:auto;height:auto;border-radius:8px}
.teaching-content iframe{width:100%;height:100%;border:0;background:#fff;border-radius:6px}
.host-tools .host-btn{margin-top:7px}
@media(max-width:700px){
 .teaching-stage{inset:72px 7px 70px 7px;border-radius:15px}
 .teaching-head{height:48px;flex-basis:48px}
 .hand-indicator{left:7px;top:7px;width:32px;height:32px;font-size:18px}
}