/* Theatre workspace: opaque text on quiet, frosted surfaces. */
:root{font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:#243a56;background:#edf3fb;font-synthesis:none;--muted:#526b89;--blue:#286bd8;--line:#dce6f2;--glass:linear-gradient(135deg,#ffffffed,#f9fbffbb);--shadow:0 12px 35px -23px #3d619e65,inset 0 1px 0 #fff}
*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(ellipse at 25% 5%,#c6defa77,transparent 40%),radial-gradient(ellipse at 95% 70%,#e5d8f255,transparent 40%),#edf3fb}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:wait;opacity:.6}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #77a9f0;outline-offset:3px}button{border:0}button svg{width:19px;height:19px;flex-shrink:0}h1,h2,h3,p{margin:0}h1{font-size:29px;line-height:1.2;letter-spacing:-1px}h2{font-size:18px;letter-spacing:-.3px}h3{font-size:15px}p{line-height:1.6}.muted,small{color:var(--muted)}small{font-size:12px;line-height:1.5}.eyebrow{font-size:10px;letter-spacing:1.9px;font-weight:750;text-transform:uppercase;color:#69809c}.brand{display:flex;align-items:center;gap:12px;color:#233a54;text-decoration:none!important}.brand img{width:47px;height:47px;object-fit:contain}.brand strong{display:block;font-size:15px;letter-spacing:1.5px}.brand small{display:block;font-size:9px;letter-spacing:1.3px;margin-top:4px}.topbar{height:92px;display:flex;align-items:center;justify-content:space-between;padding:0 32px;border-bottom:1px solid #fff;background:#ffffff9c;backdrop-filter:blur(24px);gap:20px}.top-actions{display:flex;align-items:center;gap:18px}.date{font-size:12px;color:var(--muted)}.profile-button{display:flex;align-items:center;gap:11px;background:transparent;text-align:right;color:inherit;padding:5px}.profile-button b{display:block;font-size:13px}.profile-button small{font-size:11px}.avatar{width:40px;height:40px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;background:linear-gradient(140deg,#deebff,#c5d9f6);color:#42699e;font-size:13px;font-weight:700;border:1px solid #fff;overflow:hidden}.avatar img{width:100%;height:100%;object-fit:cover}.avatar.large{width:66px;height:66px;border-radius:22px;font-size:23px}.layout{display:grid;grid-template-columns:218px minmax(0,1fr);min-height:calc(100vh - 92px)}.sidebar{padding:31px 17px 20px;border-right:1px solid #ffffffc9;background:#ffffff50;display:flex;flex-direction:column;gap:8px}.nav-label{padding:0 13px;margin:8px 0 7px}.nav-item{display:flex;align-items:center;gap:11px;padding:13px;border-radius:12px;color:#6b809c;font-size:13px;font-weight:550;border:1px solid transparent;text-decoration:none!important}.nav-item:hover{background:#ffffff80}.nav-item.active{background:var(--glass);border-color:#fff;color:#2b66b5;box-shadow:var(--shadow)}.nav-item svg{width:19px;height:19px}.sidebar-note{margin:auto 11px 0;padding-top:60px;font-size:11px;line-height:1.8;color:#8495aa}.workspace{padding:25px 36px 20px;max-width:1600px;width:100%;min-width:0}.breadcrumb{font-size:11px;color:#8a9bb0;margin-bottom:27px;display:flex;gap:10px}.breadcrumb b{color:#647c99;font-weight:500}.page-head{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px}.page-head p{font-size:13px;color:var(--muted);margin-top:9px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:41px;padding:10px 16px;border-radius:11px;font-size:12px;font-weight:650;background:#fff;color:#50719d;border:1px solid #fff;box-shadow:0 4px 13px -10px #365a99;text-decoration:none!important;white-space:nowrap}.button:hover{filter:brightness(.98)}.button.primary{color:#fff;border-color:#3979df;background:linear-gradient(155deg,#326dce,#2267d5);box-shadow:inset 0 1px #ffffff66,0 6px 15px -9px #215fb8}.button.danger{color:#ad4351;background:#fff5f5;border-color:#f4d8db}.button.small{min-height:34px;font-size:11px;padding:7px 11px}.button.ghost{background:transparent;box-shadow:none;border-color:#d5e1ef}.icon-button{display:inline-flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;background:transparent;color:#7189a6;border-radius:10px}.icon-button:hover{background:#e6eef8}.panel,.stat,.hero{background:var(--glass);border:1px solid #ffffffed;border-radius:20px;box-shadow:var(--shadow)}.panel{padding:23px}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:20px}.panel-heading a{font-size:12px}.panel-heading small{display:block;margin-top:5px}.grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(270px,1fr);gap:21px}.stack{display:grid;gap:20px}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:17px;margin-bottom:23px}.stat{padding:21px;position:relative;overflow:hidden}.stat .symbol{width:34px;height:34px;border-radius:11px;background:#e7f0ff;color:#5686c5;display:flex;align-items:center;justify-content:center;margin-bottom:15px}.stat .symbol svg{width:18px;height:18px}.stat b{display:block;font-size:25px;letter-spacing:-.6px;font-weight:650}.stat p{font-size:11px;margin-top:5px;color:var(--muted)}.hero{padding:29px 31px;background:linear-gradient(120deg,#d1e5ffad,#d6edf1a6);margin-bottom:24px;position:relative;overflow:hidden}.hero:after{content:"";position:absolute;width:220px;height:220px;border:35px solid #ffffff35;border-radius:50%;right:-65px;top:-90px;pointer-events:none}.hero h2{font-size:24px;letter-spacing:-.7px;position:relative;z-index:1}.hero p{font-size:13px;max-width:570px;margin:10px 0 19px;color:#54718f}.hero .eyebrow{margin-bottom:11px}.empty{padding:42px 20px;text-align:center;display:flex;align-items:center;flex-direction:column;gap:13px}.empty-icon{width:59px;height:59px;border-radius:19px;display:flex;align-items:center;justify-content:center;color:#7595be;background:#eaf2fc;border:1px solid #fff}.empty-icon svg{width:26px;height:26px}.empty p{max-width:380px;color:var(--muted);font-size:13px}.empty h3{font-size:15px}.toolbar{display:flex;gap:10px;align-items:center;margin-bottom:18px;flex-wrap:wrap}.search{max-width:360px;flex:1;min-width:180px}.filters{display:flex;gap:5px;flex-wrap:wrap}.chip{padding:9px 13px;font-size:11px;background:transparent;border-radius:10px;color:#7287a2;border:1px solid transparent}.chip.active{background:#fff;color:#366ebd;border-color:#fff;box-shadow:var(--shadow)}.list{display:grid;gap:0}.person{display:flex;align-items:center;gap:13px;padding:16px 0;border-bottom:1px solid #dbe5f070}.person:last-child{border-bottom:0}.person-text{flex:1;min-width:0}.person b{font-size:13px;display:block;overflow-wrap:anywhere}.person small{display:block;margin-top:4px}.row-actions{display:flex;align-items:center;gap:6px;flex-wrap:wrap;justify-content:flex-end}.badge{display:inline-block;padding:5px 8px;border-radius:7px;color:#5e7a9d;background:#eaf0f9;font-size:10px;font-weight:600}.badge.green{color:#357f69;background:#e6f3ee}.badge.orange{color:#9e7439;background:#fcf1dd}.badge.red{color:#b05e66;background:#fbeaed}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.group-card h3{font-size:17px;margin:14px 0 5px}.group-card p{font-size:12px;color:var(--muted);margin-bottom:19px}.progress{height:5px;border-radius:10px;background:#dce7f4;margin:13px 0 18px;overflow:hidden}.progress i{display:block;height:100%;background:#79a3df;border-radius:10px}.between{display:flex;justify-content:space-between;gap:10px;align-items:center}.lesson{display:flex;gap:16px;align-items:flex-start;padding:18px 0;border-bottom:1px solid #dbe5f080}.lesson:last-child{border-bottom:0}.lesson-time{min-width:60px;color:#4975ae;font-size:15px;font-weight:650}.lesson-time small{font-size:10px;display:block;margin-top:5px;font-weight:400}.lesson-info{flex:1;min-width:0}.lesson h3{margin:1px 0 6px}.lesson p{font-size:12px;color:var(--muted)}.day-title{font-size:11px;color:#526b89;padding:23px 0 4px;text-transform:uppercase;letter-spacing:1px}.notice{padding:21px 0;border-bottom:1px solid #dbe5f080}.notice:last-child{border-bottom:0}.notice h3{font-size:15px;margin:11px 0 9px}.notice p{font-size:13px;white-space:pre-wrap;overflow-wrap:anywhere}.notice-footer{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-top:17px}.notice-footer small{font-size:11px}.notice.unread h3:before{content:"";display:inline-block;width:6px;height:6px;margin-right:9px;background:#5089e0;border-radius:50%;vertical-align:middle}.footer{display:flex;justify-content:space-between;gap:15px;color:#526b89;font-size:10px;padding-top:32px}.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:35px 22px}.auth-layout{max-width:1030px;width:100%;display:grid;grid-template-columns:1.1fr 1fr;gap:80px;align-items:center}.auth-story h1{font-size:44px;line-height:1.15;letter-spacing:-1.8px;margin:38px 0 19px}.auth-story p{font-size:15px;color:#7388a1;max-width:390px}.auth-story .eyebrow{margin-top:31px}.auth-card{padding:36px;border-radius:25px}.auth-card h2{font-size:23px;letter-spacing:-.8px}.auth-card>p{font-size:12px;color:var(--muted);margin:10px 0 25px}.auth-card .button{width:100%;margin-top:8px}.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px;font-size:12px;font-weight:550;min-width:0}.field>small{font-weight:400}.field input,.field select,.field textarea,.search{width:100%;border:1px solid #d9e3ef;background:#ffffffc9;color:#304965;border-radius:10px;padding:12px;font-size:13px;min-height:43px}.field textarea{resize:vertical;min-height:110px;line-height:1.6}.field input[type=file]{font-size:11px;padding:9px}.field input[type=checkbox]{width:17px;min-height:17px}.field-pair{display:grid;grid-template-columns:1fr 1fr;gap:15px}.hint{padding:13px 15px;border-radius:11px;background:#edf4fe;color:#5c79a1;font-size:12px;line-height:1.6;margin-bottom:18px}.error-box{padding:12px 15px;border-radius:10px;background:#fff0f0;color:#a24450;font-size:12px;line-height:1.6;margin-bottom:18px}.form-error:empty{display:none}.auth-footnote{margin-top:23px;text-align:center;font-size:11px;line-height:1.7;color:#526b89}.loading{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;color:#6d85a3;font-size:13px}.loading img{width:90px;height:90px;object-fit:contain}.modal-backdrop{position:fixed;inset:0;z-index:100;background:#253a5b40;backdrop-filter:blur(7px);padding:35px 20px;display:flex;align-items:center;justify-content:center}.modal{background:#f8fbff;border:1px solid #fff;border-radius:23px;box-shadow:0 30px 90px #213a6944;width:100%;max-width:540px;max-height:90dvh;overflow:auto;padding:27px}.modal.wide{max-width:700px}.modal-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:24px}.modal-head h2{font-size:21px}.modal-footer{display:flex;justify-content:flex-end;gap:9px;margin-top:25px}.modal .subtext{color:var(--muted);font-size:12px;margin:-8px 0 22px}.toasts{position:fixed;bottom:24px;right:24px;z-index:200;display:grid;gap:10px;max-width:min(390px,calc(100vw - 32px))}.toast{background:#243d5b;color:#fff;padding:15px 20px;border-radius:13px;box-shadow:0 8px 35px #20345133;font-size:13px;line-height:1.6}.toast.error{background:#9d4856}.qr{background:#fff;border-radius:15px;padding:18px;display:flex;justify-content:center;margin:20px auto;max-width:270px}.qr svg{width:100%;height:auto;display:block}.copy-field{overflow-wrap:anywhere;padding:13px;border:1px solid #d7e3f2;border-radius:9px;font-size:12px;background:#fff}.invite-item{padding:14px 0;border-bottom:1px solid #e1e9f3;font-size:12px}.invite-item b{display:block;margin-bottom:5px}.profile-card{display:flex;gap:20px;align-items:center;margin-bottom:24px}.profile-card h2{font-size:22px}.profile-card p{font-size:12px;color:var(--muted);margin-top:7px}.checkbox-list{display:grid;gap:10px;max-height:210px;overflow:auto;padding:3px}.check-row{display:flex;align-items:center;gap:10px;font-size:13px;line-height:1.7}.check-row input{width:17px;height:17px}.audit-row{padding:14px 0;border-bottom:1px solid #e1e9f3;font-size:12px}.audit-row small{display:block;margin-top:6px}.inline-error{padding:30px;color:#994655;background:#fff6f7;border:1px solid #f2d9de;border-radius:18px;font-size:13px;line-height:1.7}.mobile-label{display:none}.install-note{font-size:12px;color:var(--muted);line-height:1.8}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1500px){.workspace{padding:32px 50px}.layout{grid-template-columns:240px minmax(0,1fr)}}
@media(max-width:1050px){.layout{grid-template-columns:180px minmax(0,1fr)}.workspace{padding:24px}.topbar{padding:0 24px}.grid{grid-template-columns:1fr}.stats{gap:12px}.stat{padding:17px}.sidebar{padding:25px 10px}.nav-item{font-size:12px}.date{display:none}.auth-layout{gap:45px}.auth-story h1{font-size:37px}}
@media(max-width:720px){.topbar{height:78px;padding:0 18px}.brand{gap:9px}.brand img{width:40px;height:40px}.brand strong{font-size:12px;letter-spacing:1.1px}.brand small{font-size:8px;letter-spacing:1px}.top-actions{gap:5px}.top-actions>.button{display:none}.profile-button{padding:3px}.profile-button>span:first-child{display:none}.avatar{width:36px;height:36px;border-radius:12px}.layout{display:block;min-height:calc(100vh - 78px)}.sidebar{position:sticky;top:0;z-index:20;display:flex;flex-direction:row;padding:9px 12px;gap:5px;overflow-x:auto;scrollbar-width:none;border-right:0;border-bottom:1px solid #fff;background:#edf3fbe8;backdrop-filter:blur(20px)}.sidebar::-webkit-scrollbar{display:none}.nav-label,.sidebar-note{display:none}.nav-item{flex-shrink:0;padding:10px 11px;font-size:11px;gap:7px;border-radius:10px}.nav-item svg{width:16px;height:16px}.workspace{padding:20px 17px 25px}.breadcrumb{font-size:10px;margin-bottom:21px}.page-head{align-items:flex-start;gap:14px;margin-bottom:21px}h1{font-size:25px;letter-spacing:-.8px}.page-head p{font-size:11px;margin-top:8px}.page-head>.button{font-size:11px;min-height:37px;padding:8px 11px}.page-head>.button svg{width:16px}.hero{padding:23px}.hero h2{font-size:21px}.hero p{font-size:12px}.stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.stat{padding:17px 18px;border-radius:17px}.stat .symbol{position:absolute;right:15px;top:15px;width:28px;height:28px;border-radius:9px}.stat b{font-size:24px}.stat p{font-size:10px;margin-top:8px}.panel{padding:19px 17px;border-radius:18px}.panel-heading{margin-bottom:13px}.panel-heading h2{font-size:16px}.empty{padding:29px 6px}.empty p{font-size:12px}.person{gap:10px;flex-wrap:wrap}.person-text{min-width:140px}.person .row-actions{margin-left:46px}.person small{font-size:11px}.cards{grid-template-columns:1fr}.lesson{gap:12px;flex-wrap:wrap}.lesson-time{min-width:52px;font-size:13px}.lesson .row-actions{margin-left:64px}.lesson p{font-size:11px}.footer{font-size:9px;line-height:1.6}.footer span:last-child{display:none}.modal-backdrop{padding:14px;align-items:center}.modal{padding:23px 19px;border-radius:20px;max-height:94dvh}.modal-head h2{font-size:19px}.field-pair{gap:12px}.field{font-size:11px}.field input,.field select,.field textarea{font-size:16px;padding:11px}.modal-footer .button{flex:1}.auth-wrap{align-items:flex-start;padding:35px 20px}.auth-layout{display:block;max-width:430px}.auth-story h1{font-size:29px;margin:31px 0 12px;letter-spacing:-1px}.auth-story p{font-size:12px;max-width:340px}.auth-story .eyebrow{display:none}.auth-card{padding:26px 22px;margin-top:29px}.auth-card h2{font-size:21px}.auth-card>p{font-size:12px;margin-bottom:23px}.auth-footnote{font-size:10px;margin-top:19px}.auth-card .field input{font-size:16px}.toasts{bottom:16px;right:16px;left:16px;max-width:none}.notice-footer{align-items:flex-start}.profile-card{gap:14px}.profile-card h2{font-size:19px}.toolbar .search{max-width:none}.badge{font-size:9px}.grid{gap:17px}.hero .button{font-size:11px}.row-actions .button{font-size:10px}.invite-item .between{align-items:flex-start}}
@media(prefers-reduced-motion:no-preference){.button,.nav-item{transition:background .15s,box-shadow .15s}.modal{animation:appear .15s ease-out}@keyframes appear{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:translateY(0)}}}
@media(max-width:720px){#lesson-form .field-pair{grid-template-columns:1fr;gap:0}}

/* Safe-area offsets stay zero in ordinary desktop browsers. */
body { padding: env(safe-area-inset-top, 0px) env(safe-area-inset-right, 0px) env(safe-area-inset-bottom, 0px) env(safe-area-inset-left, 0px); }
body .login-scene { min-height: calc(100svh - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px)); }
@media (max-width: 720px) {
  .sidebar { top: env(safe-area-inset-top, 0px); }
  .toasts { bottom: calc(16px + env(safe-area-inset-bottom, 0px)); left: calc(16px + env(safe-area-inset-left, 0px)); right: calc(16px + env(safe-area-inset-right, 0px)); }
  .modal-backdrop { padding: calc(14px + env(safe-area-inset-top, 0px)) calc(14px + env(safe-area-inset-right, 0px)) calc(14px + env(safe-area-inset-bottom, 0px)) calc(14px + env(safe-area-inset-left, 0px)); }
}