@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap');
:root{color-scheme:dark;--bg:#041016;--bg2:#071a22;--panel:#071b24;--panel2:#0b2630;--panel3:#0e3039;--line:#12434d;--line2:#1c6670;--text:#e8fffd;--muted:#8cbbc0;--teal:#20f4dc;--teal2:#00cdbf;--teal-soft:rgba(32,244,220,.11);--teal-glow:rgba(32,244,220,.22);--green:#64f2b5;--red:#ff7294;--amber:#ffd078;--shadow:0 14px 40px rgba(0,0,0,.24);--radius:18px;font-family:Manrope,Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg)}
:root[data-theme="light"]{color-scheme:light;--bg:#edf9f8;--bg2:#e3f4f2;--panel:#ffffff;--panel2:#f3fbfa;--panel3:#e8f7f5;--line:#c7e8e5;--line2:#8bd7d0;--text:#123239;--muted:#51777b;--teal:#009c92;--teal2:#00b7a8;--teal-soft:rgba(0,183,168,.10);--teal-glow:rgba(0,183,168,.18);--green:#098b61;--red:#c63d60;--amber:#946000;--shadow:0 12px 35px rgba(16,88,92,.10)}
*{box-sizing:border-box}html{min-height:100%;-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{margin:0;min-height:100vh;background:radial-gradient(ellipse at 80% -10%,rgba(0,197,191,.11),transparent 35%),radial-gradient(ellipse at 10% 30%,rgba(0,101,144,.09),transparent 32%),var(--bg);font-size:14px;overscroll-behavior-y:contain}button,input,textarea,select{font:inherit}button{cursor:pointer;border:0;touch-action:manipulation;-webkit-tap-highlight-color:transparent}input,textarea,select{color:var(--text)}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.hidden{display:none!important}.muted{color:var(--muted);line-height:1.6}.eyebrow{margin:0 0 8px;font-size:10px;letter-spacing:2px;color:var(--teal);font-weight:800}.tiny{font-size:11px;color:var(--muted);line-height:1.5}.primary,.secondary,.danger-button{min-height:43px;padding:12px 16px;border-radius:12px;font-weight:800;transition:transform .16s ease,filter .16s ease,box-shadow .16s ease}.primary{color:#002b2e;background:linear-gradient(105deg,#64fff0,var(--teal),#00c9c2);box-shadow:0 6px 25px var(--teal-glow);border:1px solid rgba(255,255,255,.12)}.primary:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 9px 32px var(--teal-glow)}.primary span{float:right;margin-left:16px}.secondary{border:1px solid var(--line2);background:var(--teal-soft);color:var(--text)}.secondary:hover{border-color:var(--teal);background:var(--teal-glow)}.danger-button{color:var(--red);background:rgba(255,80,120,.08);border:1px solid rgba(255,80,120,.4)}.full{width:100%}.stack-form{display:grid;gap:15px}.stack-form label{display:grid;gap:8px}.field-label,.login-card label,.inline-form label{display:grid;gap:8px;font-size:12px;color:var(--muted);font-weight:800}.field-label input,.field-label textarea,.field-label select,.login-card input,.inline-form input,.stack-form input,.stack-form select,.stack-form textarea{width:100%;min-width:0;background:var(--bg2);color:var(--text);border:1px solid var(--line);border-radius:12px;padding:12px 13px;outline:none;transition:border-color .15s,box-shadow .15s}.field-label input:focus,.field-label textarea:focus,.field-label select:focus,.login-card input:focus,.inline-form input:focus,.stack-form input:focus,.stack-form textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px var(--teal-soft)}textarea{resize:vertical;line-height:1.6}select option{background:var(--panel);color:var(--text)}
/* Login / welcome */
.login-screen{min-height:100vh;min-height:100dvh;display:grid;grid-template-columns:minmax(0,1.22fr) minmax(360px,.78fr);background:#030b12}.login-visual{position:relative;min-height:100vh;min-height:100dvh;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;padding:clamp(26px,4vw,58px);isolation:isolate;background:linear-gradient(90deg,#031017 1%,rgba(3,16,23,.86) 46%,rgba(3,16,23,.15) 100%),url('/static/spectr-hero.jpg') center/cover no-repeat}.login-visual:after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(0deg,#020b10 0%,transparent 38%,rgba(2,15,22,.2) 100%)}.login-brand{display:flex;align-items:center;gap:12px;position:relative;z-index:2}.brand-crown{height:50px;width:50px;border:1px solid var(--teal);border-radius:15px;color:var(--teal);display:grid;place-items:center;font-size:30px;text-shadow:0 0 20px var(--teal-glow);box-shadow:0 0 25px var(--teal-glow),inset 0 0 18px var(--teal-soft)}.brand-word{font-size:clamp(27px,4vw,42px);font-weight:900;letter-spacing:4px;line-height:1;color:white;text-shadow:0 0 22px var(--teal-glow)}.brand-sub{font-size:10px;letter-spacing:5px;color:var(--teal);font-weight:900;margin-top:7px}.login-copy{position:relative;z-index:2;max-width:580px;margin:30px 0 60px}.login-copy h1{font-size:clamp(38px,5.3vw,72px);line-height:1.02;letter-spacing:-2.5px;margin:13px 0 18px;font-weight:900}.login-copy h1 span{color:var(--teal);text-shadow:0 0 35px var(--teal-glow)}.login-copy>p{max-width:470px;color:#c7e8e7;line-height:1.7;font-size:clamp(13px,1.4vw,16px)}.feature-pills{display:flex;gap:9px;flex-wrap:wrap;margin-top:24px}.feature-pills span{border:1px solid #3cd8d16b;border-radius:100px;padding:8px 12px;background:#001b2299;color:#d5fffc;font-size:11px;font-weight:800;backdrop-filter:blur(8px)}.hero-image-wrap{position:absolute;z-index:1;right:0;bottom:7%;width:min(68%,740px);height:53%;pointer-events:none;opacity:.65;mask-image:linear-gradient(90deg,transparent 0%,black 26%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,black 26%)}.hero-image-wrap img{width:100%;height:100%;object-fit:cover;object-position:center;filter:contrast(1.05) saturate(1.1);mix-blend-mode:screen}.login-visual-footer{position:relative;z-index:2;display:flex;gap:24px;flex-wrap:wrap;color:#75b9bf;font-size:9px;font-weight:900;letter-spacing:1.5px}.login-side{display:grid;place-items:center;padding:30px;background:radial-gradient(ellipse at 50% 25%,rgba(0,200,190,.12),transparent 55%),#041117;border-left:1px solid #0d3941}.login-card{width:min(100%,430px);padding:clamp(24px,4vw,42px);background:linear-gradient(145deg,#071d25f5,#041219f7);border:1px solid #1b6670;border-radius:26px;box-shadow:0 25px 90px #0008,0 0 30px #00d9ca15;backdrop-filter:blur(16px)}.login-card .brand-mark{margin-bottom:28px}.brand-mark{height:52px;width:52px;border-radius:16px;display:grid;place-items:center;background:linear-gradient(140deg,#8ffff4,var(--teal2));color:#00292b;font-size:29px;font-weight:900;box-shadow:0 0 28px var(--teal-glow)}.login-card h2{font-size:30px;margin:9px 0 7px;letter-spacing:-.8px}.login-card form{margin-top:27px}.login-card input{padding:14px}.error{min-height:18px;color:var(--red);margin:0;font-size:12px}.login-safety{display:flex;gap:9px;align-items:flex-start;border-top:1px solid var(--line);margin-top:23px;padding-top:18px;color:var(--muted);font-size:10px;line-height:1.6}.safe-icon{width:21px;height:21px;display:grid;place-items:center;flex-shrink:0;color:#002f2b;background:var(--teal);border-radius:50%;font-weight:900}.login-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:26px;color:var(--muted);font-size:9px;font-weight:800;letter-spacing:1.5px}.theme-button,.mobile-menu{height:42px;width:42px;display:grid;place-items:center;border-radius:12px;background:var(--panel2);border:1px solid var(--line);color:var(--teal);font-size:22px;min-width:42px}.theme-button:hover,.mobile-menu:hover{border-color:var(--teal);box-shadow:0 0 18px var(--teal-soft)}
/* App shell */
.app-shell{min-height:100vh;display:flex}.sidebar{width:244px;position:fixed;inset:0 auto 0 0;border-right:1px solid var(--line);background:linear-gradient(180deg,var(--panel) 0%,var(--bg) 100%);display:flex;flex-direction:column;padding:24px 14px 16px;z-index:10}.brand{display:flex;align-items:center;gap:11px;padding:0 9px 31px}.brand b{font-size:16px;display:block;letter-spacing:2px}.brand small{display:block;color:var(--teal);font-size:9px;margin-top:4px;letter-spacing:3px;font-weight:900}.brand-mark.small{width:40px;height:40px;border-radius:13px;font-size:23px;flex-shrink:0}.sidebar nav{display:grid;gap:6px}.nav-link{display:flex;align-items:center;gap:12px;width:100%;text-align:left;padding:13px 14px;min-height:45px;color:var(--muted);background:transparent;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:12px;white-space:nowrap}.nav-link span{font-size:20px;width:24px;text-align:center;color:var(--teal)}.nav-link:hover{background:var(--teal-soft);color:var(--text)}.nav-link.active{color:var(--text);background:linear-gradient(100deg,var(--teal-soft),rgba(0,200,190,.03));border-color:var(--line2);box-shadow:inset 3px 0 0 var(--teal),0 0 22px #00cbbb0a}.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding:16px 2px 0}.user-mini{display:flex;align-items:center;gap:10px;margin-bottom:12px;padding:3px 5px;min-width:0}.avatar{height:38px;width:38px;border-radius:50%;background:linear-gradient(135deg,#2df8dd,#087d8a);border:1px solid #6ffff0;display:grid;place-items:center;font-weight:900;color:#00272b;flex-shrink:0}.user-mini b{display:block;max-width:125px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.user-mini small{display:block;color:var(--muted);margin-top:3px;font-size:10px}.logout{width:100%;background:transparent;color:var(--muted);text-align:left;padding:12px;border-radius:9px;font-weight:700}.logout:hover{background:var(--teal-soft);color:var(--text)}.main-content{width:calc(100% - 244px);margin-left:244px;padding:30px clamp(16px,3vw,42px) 20px;max-width:1800px;min-width:0}.topbar{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:26px}.topbar h1{margin:0 0 7px;font-size:clamp(24px,3vw,32px);letter-spacing:-.8px}.topbar p{margin:0}.topbar-right{display:flex;align-items:center;gap:10px;flex-shrink:0}.live-pill{padding:10px 13px;border:1px solid var(--line);background:var(--panel);border-radius:30px;color:var(--muted);font-size:11px;font-weight:800;display:flex;align-items:center;gap:8px}.live-pill i{display:inline-block;height:7px;width:7px;border-radius:50%;background:var(--teal);box-shadow:0 0 12px var(--teal)}.mobile-menu{display:none}.view{animation:fade-in .22s ease}@keyframes fade-in{from{opacity:.55;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}
.welcome-banner{position:relative;overflow:hidden;display:flex;justify-content:space-between;align-items:center;min-height:230px;border:1px solid var(--line2);border-radius:23px;padding:clamp(20px,3vw,34px);background:linear-gradient(105deg,#061b23 0%,#08252c 55%,#06141d 100%);margin-bottom:24px;box-shadow:0 12px 45px #0002}.welcome-banner:before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 30% 50%,rgba(0,230,213,.11),transparent 58%);pointer-events:none}.welcome-copy{position:relative;z-index:2;max-width:62%}.welcome-copy h2{font-size:clamp(22px,3vw,34px);line-height:1.15;margin:14px 0 8px;letter-spacing:-1px}.welcome-copy p{max-width:570px;color:#a8d1d3;margin:0 0 18px;line-height:1.6;font-size:13px}.welcome-copy .primary{min-width:220px}.welcome-art{position:absolute;right:0;top:0;height:100%;width:47%;overflow:hidden;opacity:.76;mask-image:linear-gradient(90deg,transparent 0%,black 42%);-webkit-mask-image:linear-gradient(90deg,transparent 0%,black 42%)}.welcome-art img{height:100%;width:100%;object-fit:cover;object-position:center;filter:saturate(1.15);mix-blend-mode:screen}.pill{display:inline-block;padding:6px 9px;border:1px solid var(--line2);background:var(--teal-soft);border-radius:7px;color:var(--teal);font-weight:900;font-size:9px;letter-spacing:1.2px}.stats-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;margin-bottom:30px}.stat-card{background:linear-gradient(145deg,var(--panel2),var(--panel));border:1px solid var(--line);border-radius:16px;padding:17px;display:flex;align-items:center;gap:13px;min-width:0;box-shadow:var(--shadow)}.stat-icon{width:43px;height:43px;display:grid;place-items:center;border-radius:13px;background:var(--teal-soft);color:var(--teal);font-size:20px;flex-shrink:0}.stat-value{font-size:24px;font-weight:900;letter-spacing:-.7px}.stat-label{font-size:10px;color:var(--muted);margin-top:4px;line-height:1.4}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;margin:0 0 16px}.section-heading h2,.panel h2{font-size:18px;margin:0 0 5px}.section-heading p{font-size:12px;margin:0}.count-badge{padding:7px 10px;border:1px solid var(--line);border-radius:9px;color:var(--muted);background:var(--panel);font-size:11px;white-space:nowrap;font-weight:800}.blocks-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.block-card{border:1px solid var(--line);background:linear-gradient(145deg,var(--panel2),var(--panel));border-radius:17px;padding:19px;min-width:0;transition:border-color .18s,transform .18s;box-shadow:var(--shadow)}.block-card.open{border-color:var(--line2)}.block-card.open:hover{transform:translateY(-2px);border-color:var(--teal);box-shadow:0 12px 32px var(--teal-soft)}.block-top{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}.block-number{height:43px;width:43px;display:grid;place-items:center;background:var(--teal-soft);border:1px solid var(--line2);border-radius:13px;color:var(--teal);font-weight:900}.block-card h3{font-size:16px;margin:13px 0 7px}.block-card p{color:var(--muted);line-height:1.55;font-size:12px;min-height:36px;margin:0 0 15px}.status-tag{white-space:nowrap;padding:6px 9px;border-radius:8px;font-size:10px;font-weight:900;background:var(--panel3);color:var(--muted);border:1px solid var(--line)}.status-tag.open{background:var(--teal-soft);color:var(--teal);border-color:var(--line2)}.status-tag.done{background:rgba(79,226,169,.1);color:var(--green);border-color:rgba(79,226,169,.35)}.status-tag.locked{background:rgba(120,137,147,.07);color:var(--muted)}.progress-row{display:flex;gap:10px;align-items:center}.progress-track{height:6px;flex:1;background:var(--line);border-radius:8px;overflow:hidden;min-width:25px}.progress-fill{height:100%;border-radius:8px;background:linear-gradient(90deg,#00b7ae,var(--teal));box-shadow:0 0 13px var(--teal-glow)}.progress-label{font-size:11px;color:var(--muted);font-weight:800;white-space:nowrap}.item-list{margin-top:14px;border-top:1px solid var(--line);padding-top:10px;display:grid;gap:5px}.lesson-link{display:flex;align-items:center;gap:9px;text-align:left;min-width:0;width:100%;background:transparent;color:var(--muted);font-size:11px;padding:9px;border-radius:9px}.lesson-link:hover:not(:disabled){background:var(--teal-soft);color:var(--text)}.lesson-link:disabled{opacity:.42;cursor:not-allowed}.lesson-link .lesson-dot{height:8px;width:8px;border-radius:50%;flex-shrink:0;background:#607980}.lesson-link.completed .lesson-dot{background:var(--green);box-shadow:0 0 9px rgba(100,242,181,.4)}.lesson-link .lesson-name{overflow-wrap:anywhere;flex:1}.lesson-link .lesson-type{font-size:9px;opacity:.7;white-space:nowrap}.block-footer{display:flex;gap:12px;align-items:center;margin-top:14px}.block-footer .primary,.block-footer .secondary{flex:1;min-width:0}.locked-note{color:var(--muted);font-size:11px;margin-top:9px}
/* Lesson, quiz, media */
.content-panel,.panel{border:1px solid var(--line);background:linear-gradient(145deg,var(--panel2),var(--panel));border-radius:17px;padding:clamp(16px,2vw,24px);min-width:0;box-shadow:var(--shadow)}.back-link{background:transparent;color:var(--teal);margin-bottom:14px;padding:8px 0;font-weight:800}.content-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:18px;border-bottom:1px solid var(--line)}.content-title-row h2{font-size:clamp(19px,2vw,25px);margin:12px 0 0}.material-content{font-size:14px;line-height:1.82;overflow-wrap:anywhere;white-space:pre-wrap;color:var(--text);margin:22px 0}.material-content h3{font-size:16px}.media-container{padding:17px;margin:16px 0;border:1px solid var(--line);border-radius:15px;background:var(--bg2)}.media-container audio,.media-container video{width:100%;display:block}.media-container img{max-width:100%;border-radius:10px}.media-container a{color:var(--teal)}.content-actions{display:flex;justify-content:flex-end;border-top:1px solid var(--line);padding-top:16px;gap:10px}.quiz-area{margin:18px 0}.quiz-question{padding:16px;border:1px solid var(--line);background:var(--bg2);border-radius:15px;margin-bottom:13px}.quiz-question h3{font-size:14px;line-height:1.5;margin:0 0 13px}.quiz-option{display:flex;align-items:flex-start;gap:10px;padding:11px 12px;margin:7px 0;border:1px solid var(--line);background:var(--panel);border-radius:11px;cursor:pointer;line-height:1.45;font-size:12px}.quiz-option:has(input:checked){border-color:var(--teal);background:var(--teal-soft)}.quiz-option input{accent-color:var(--teal);margin-top:2px;flex-shrink:0}.quiz-feedback{font-size:12px;margin-top:10px;line-height:1.6;color:var(--muted)}.quiz-feedback.good{color:var(--green)}.quiz-feedback.bad{color:var(--red)}.quiz-submit{width:100%;margin-top:5px}.quiz-result{padding:14px;border:1px solid var(--line2);background:var(--teal-soft);border-radius:12px;margin:12px 0;font-weight:800;line-height:1.6}.content-actions .secondary{min-width:220px}
/* Admin users */
.admin-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(310px,.9fr);gap:15px;align-items:start}.panel{min-width:0}.search-field{display:flex;align-items:center;gap:8px;background:var(--bg2);border:1px solid var(--line);padding:0 12px;border-radius:11px;margin-bottom:12px;color:var(--teal)}.search-field input{width:100%;min-width:0;border:0;background:transparent;padding:12px 0;outline:none;color:var(--text)}.filter-pills{display:flex;flex-wrap:wrap;gap:6px;margin:11px 0 15px}.filter-pill{padding:7px 10px;border:1px solid var(--line);border-radius:20px;background:var(--panel);color:var(--muted);font-size:10px;font-weight:800}.filter-pill.active{background:var(--teal-soft);border-color:var(--line2);color:var(--teal)}.users-list{display:grid;gap:8px;max-height:720px;overflow-y:auto;padding-right:2px}.user-card{display:flex;align-items:center;gap:10px;padding:12px;border:1px solid var(--line);background:var(--bg2);border-radius:13px;min-width:0}.user-card.selected{border-color:var(--teal);box-shadow:0 0 0 1px var(--teal-soft)}.user-card .avatar{height:36px;width:36px}.user-card-main{min-width:0;flex:1}.user-card-main b{font-size:12px;display:block;overflow-wrap:anywhere}.user-card-meta{font-size:10px;color:var(--muted);margin:3px 0 6px}.user-card .progress-row{gap:7px}.user-card .progress-track{max-width:130px}.user-card .progress-label{font-size:10px}.user-select{background:var(--teal-soft);border:1px solid var(--line2);color:var(--teal);border-radius:9px;padding:10px 12px;min-height:42px;font-weight:800;font-size:11px;flex-shrink:0}.detail-header{display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line);padding-bottom:16px}.detail-header .avatar{height:50px;width:50px}.detail-header h3{margin:0 0 5px;overflow-wrap:anywhere}.detail-header p{margin:0;color:var(--muted);font-size:11px;line-height:1.5}.detail-progress{padding:17px 0;border-bottom:1px solid var(--line)}.detail-progress b{font-size:24px;display:block;margin:5px 0}.detail-tabs{display:flex;gap:7px;flex-wrap:wrap;margin:15px 0}.detail-tab{padding:8px 11px;border:1px solid var(--line);border-radius:9px;background:var(--bg2);color:var(--muted);font-weight:800;font-size:10px}.detail-tab.active{color:var(--teal);border-color:var(--line2);background:var(--teal-soft)}.access-list{display:grid;gap:9px;margin-top:13px}.access-row{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:12px;border:1px solid var(--line);background:var(--bg2);border-radius:12px}.access-row b{font-size:12px;display:block;line-height:1.4}.access-row small{display:block;color:var(--muted);margin-top:4px;font-size:10px;line-height:1.4}.switch{position:relative;width:48px;height:28px;flex-shrink:0;display:block}.switch input{opacity:0;width:0;height:0;position:absolute}.switch .slider{position:absolute;inset:0;cursor:pointer;background:#2a454b;border-radius:30px;transition:.2s;border:1px solid var(--line2)}.switch .slider:before{content:"";height:20px;width:20px;position:absolute;left:3px;top:3px;border-radius:50%;background:#b2d0d2;transition:.2s}.switch input:checked+.slider{background:var(--teal2);box-shadow:0 0 14px var(--teal-glow)}.switch input:checked+.slider:before{transform:translateX(20px);background:#003b39}.detail-actions{display:flex;gap:8px;flex-wrap:wrap;margin:13px 0}.detail-actions button{flex:1}.create-user-panel{margin-top:16px}.create-user-panel>p{font-size:12px}.inline-form{display:grid;grid-template-columns:1fr 1fr auto;align-items:end;gap:12px;margin-top:18px}.inline-form input{padding:12px}.small-message{font-size:12px;color:var(--green);min-height:16px;line-height:1.5}.empty-state{text-align:center;padding:35px 10px;color:var(--muted)}.empty-icon{font-size:37px;color:var(--teal)}.empty-state h3{color:var(--text);margin:12px 0 5px}.empty-state p{font-size:12px;line-height:1.5}
/* Materials */
.material-workspace{display:grid;grid-template-columns:minmax(260px,.78fr) minmax(0,1.22fr);gap:15px;align-items:start}.materials-library{position:sticky;top:12px}.materials-library .field-label{margin:14px 0}.materials-list{display:grid;gap:7px;margin:13px 0 15px;max-height:370px;overflow:auto}.material-list-item{display:flex;align-items:center;gap:8px;text-align:left;width:100%;padding:11px;border:1px solid var(--line);background:var(--bg2);color:var(--text);border-radius:11px;min-width:0}.material-list-item.active{border-color:var(--teal);background:var(--teal-soft)}.material-list-item .type-icon{width:31px;height:31px;display:grid;place-items:center;flex-shrink:0;border:1px solid var(--line);border-radius:9px;color:var(--teal)}.material-list-item .material-list-main{min-width:0;flex:1}.material-list-item b{font-size:11px;line-height:1.4;display:block;overflow-wrap:anywhere}.material-list-item small{color:var(--muted);display:block;font-size:9px;margin-top:4px}.material-list-item .unpublished{color:var(--amber)}.block-meta-editor,.add-block-box{border-top:1px solid var(--line);margin-top:18px;padding-top:17px}.block-meta-editor h3,.add-block-box h3{font-size:13px;margin:0 0 12px}.block-meta-editor .field-label,.add-block-box .field-label{margin-bottom:11px}.field-help{font-size:10px;color:var(--muted);line-height:1.5;margin:6px 0 0}.editor-heading{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding-bottom:17px;border-bottom:1px solid var(--line);margin-bottom:18px}.editor-heading h2{font-size:22px;margin:9px 0 4px}.editor-heading p{margin:0;font-size:11px}.editor-icon{width:42px;height:42px;display:grid;place-items:center;border:1px solid var(--line2);border-radius:13px;color:var(--teal);font-size:22px}.upload-box{border:1px dashed var(--line2);border-radius:13px;padding:14px;background:var(--teal-soft)}.upload-heading{display:flex;gap:10px;align-items:center;margin-bottom:10px}.upload-heading>span{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--teal);color:#003130;font-size:19px;font-weight:900}.upload-heading b,.upload-heading small{display:block}.upload-heading b{font-size:12px}.upload-heading small{font-size:10px;color:var(--muted);line-height:1.5;margin-top:3px}.upload-box input[type=file]{font-size:11px;width:100%;color:var(--muted)}.upload-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:11px}.publish-toggle{display:flex!important;align-items:center;gap:10px;border:1px solid var(--line);padding:12px;border-radius:12px;background:var(--bg2)}.publish-toggle input{width:20px;height:20px;accent-color:var(--teal);flex-shrink:0}.publish-toggle b,.publish-toggle small{display:block}.publish-toggle b{font-size:12px;color:var(--text)}.publish-toggle small{font-size:10px;color:var(--muted);margin-top:3px;line-height:1.4}.editor-actions{display:flex;justify-content:flex-end;gap:8px}.quiz-editor-heading{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.quiz-editor-heading h3{margin:0;font-size:14px}.quiz-editor-heading p{margin:4px 0 0}.quiz-q-card{padding:13px;margin-bottom:10px;border:1px solid var(--line);background:var(--bg2);border-radius:13px}.quiz-q-header{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-bottom:10px}.quiz-q-header b{font-size:12px}.small-danger{background:transparent;color:var(--red);font-weight:800;font-size:10px}.quiz-q-card .field-label{margin:9px 0}.quiz-q-card textarea,.quiz-q-card input{font-size:12px}.quiz-options-editor{display:grid;grid-template-columns:1fr 1fr;gap:8px}.quiz-correct-select{margin-top:9px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.notice-card{margin-top:20px;padding:15px;border:1px solid var(--line2);border-radius:13px;background:var(--teal-soft);font-size:12px;line-height:1.6}.notice-card b{color:var(--teal)}.notice-card p{margin:7px 0 0;color:var(--muted)}
/* Profile and statistics */
.profile-hero{display:flex;align-items:center;gap:18px;margin-bottom:15px;background:linear-gradient(105deg,var(--panel2),var(--panel))}.profile-avatar{height:68px;width:68px;border:1px solid var(--teal);border-radius:22px;display:grid;place-items:center;flex-shrink:0;background:var(--teal-soft);color:var(--teal);font-size:26px;font-weight:900;box-shadow:0 0 25px var(--teal-soft)}.profile-intro h2{margin:9px 0 5px;font-size:23px}.profile-intro p{margin:0;font-size:12px}.profile-blocks{display:grid;gap:11px}.profile-block-row{padding:13px;border:1px solid var(--line);border-radius:12px;background:var(--bg2)}.profile-block-meta{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:9px}.profile-block-meta b{font-size:12px}.profile-block-meta span{font-size:11px;color:var(--teal);font-weight:900}.history-panel{margin-top:15px}.activity-list{display:grid;gap:8px;margin-top:14px}.activity-item{display:flex;align-items:flex-start;gap:10px;padding:11px;border:1px solid var(--line);border-radius:11px;background:var(--bg2)}.activity-dot{width:8px;height:8px;background:var(--teal);border-radius:50%;flex-shrink:0;margin-top:5px;box-shadow:0 0 8px var(--teal-glow)}.activity-main{flex:1;min-width:0}.activity-main b{font-size:11px;display:block;line-height:1.5;overflow-wrap:anywhere}.activity-main small{display:block;color:var(--muted);font-size:10px;line-height:1.5;margin-top:3px}.stats-admin-grid{margin-top:15px}.timeline-bars{display:grid;gap:8px;margin-top:18px}.timeline-row{display:grid;grid-template-columns:60px 1fr 25px;gap:9px;align-items:center;font-size:10px;color:var(--muted)}.timeline-track{height:8px;background:var(--line);border-radius:8px;overflow:hidden}.timeline-track span{height:100%;display:block;background:linear-gradient(90deg,var(--teal2),var(--teal));border-radius:8px}.pass-rate-card{display:flex;justify-content:space-between;align-items:center;margin-top:18px;padding:16px;border:1px solid var(--line2);border-radius:12px;background:var(--teal-soft);color:var(--muted);font-size:12px}.pass-rate-card b{color:var(--teal);font-size:26px}.footer{text-align:center;color:var(--muted);font-size:10px;padding:34px 0 12px;letter-spacing:1.6px}.footer span{color:var(--teal);margin:0 6px}.toast{position:fixed;z-index:100;bottom:22px;left:50%;transform:translateX(-50%);padding:12px 18px;border:1px solid var(--line2);background:var(--panel2);border-radius:12px;box-shadow:0 10px 40px #0006;color:var(--text);max-width:calc(100% - 30px);font-size:12px;line-height:1.5}.toast.error-toast{border-color:var(--red);color:var(--red)}.floating-theme-toggle{position:fixed;z-index:20;right:18px;bottom:18px;height:48px;width:48px;display:grid;place-items:center;background:var(--panel2);color:var(--teal);border:1px solid var(--line2);border-radius:17px;font-size:22px;box-shadow:0 0 25px var(--teal-soft)}.floating-theme-toggle:hover{transform:translateY(-2px)}
@media(max-width:1180px){.login-screen{grid-template-columns:1fr 390px}.login-visual{padding:30px}.login-copy h1{font-size:50px}.material-workspace{grid-template-columns:minmax(230px,.7fr) minmax(0,1.3fr)}.admin-grid{grid-template-columns:minmax(0,1fr) minmax(280px,.85fr)}}
@media(max-width:900px){.login-screen{grid-template-columns:1fr}.login-visual{min-height:370px;padding:24px 24px 18px}.login-copy{margin:28px 0 40px;max-width:75%}.login-copy h1{font-size:44px}.hero-image-wrap{width:55%;height:68%;bottom:4%;opacity:.48}.login-visual-footer{gap:14px}.login-side{padding:20px 16px 30px;border-left:0;border-top:1px solid #0d3941}.login-card{width:min(100%,510px)}.app-shell{display:block}.sidebar{position:relative;inset:auto;width:100%;min-height:66px;display:flex;flex-direction:row;flex-wrap:wrap;align-items:center;padding:10px 12px;border:0;border-bottom:1px solid var(--line)}.brand{flex:1 1 auto;min-width:0;padding:0}.brand b{font-size:14px}.brand small{font-size:9px}.sidebar nav{display:none;width:100%;flex:1 0 100%;flex-wrap:wrap;overflow:visible;margin-top:10px}.sidebar.expanded nav{display:flex}.sidebar nav .nav-link{flex:1 1 calc(50% - 5px);justify-content:flex-start;min-height:44px;font-size:12px}.sidebar-bottom{display:none;width:100%;flex:1 0 100%;margin-top:10px;padding-top:12px}.sidebar.expanded .sidebar-bottom{display:block}.main-content{width:100%;max-width:none;margin:0;padding:20px 16px 25px}.mobile-menu{display:grid}.topbar{gap:10px}.topbar h1{font-size:26px}.live-pill{display:none}.welcome-banner{min-height:205px}.blocks-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.material-workspace{grid-template-columns:1fr}.materials-library{position:static}.materials-list{max-height:280px}.admin-grid{grid-template-columns:1fr}.settings-grid{grid-template-columns:1fr}.detail-panel{width:100%}}
@media(max-width:600px){body{font-size:13px}.topbar{align-items:flex-start;margin-bottom:18px}.topbar>div:first-child{min-width:0}.topbar h1{font-size:23px;overflow-wrap:anywhere}.topbar .muted{font-size:11px}.topbar-right{gap:6px}.theme-button,.mobile-menu{width:39px;height:39px;min-width:39px;border-radius:11px}.live-pill{display:none}.main-content{padding:16px 12px 30px}.welcome-banner{min-height:0;padding:20px 16px;border-radius:16px;margin-bottom:18px}.welcome-copy{max-width:100%;width:100%}.welcome-copy h2{font-size:24px;max-width:80%}.welcome-copy p{font-size:12px;max-width:76%;margin-bottom:16px}.welcome-copy .primary{width:100%;min-width:0;max-width:310px}.welcome-art{width:70%;opacity:.35}.stats-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-bottom:23px}.stat-card{display:block;padding:11px 9px;border-radius:12px}.stat-icon{width:30px;height:30px;border-radius:9px;margin-bottom:8px;font-size:15px}.stat-value{font-size:18px}.stat-label{font-size:9px;line-height:1.3}.section-heading{align-items:flex-start;gap:8px}.section-heading h2{font-size:16px}.section-heading p{font-size:10px}.count-badge{font-size:9px;padding:6px 7px}.blocks-grid{grid-template-columns:minmax(0,1fr);gap:10px}.block-card{padding:15px;border-radius:14px}.block-card h3{font-size:15px;line-height:1.3}.block-card p{min-height:0;font-size:11px}.lesson-link{font-size:11px;min-height:40px}.block-footer{flex-direction:column;align-items:stretch}.content-panel,.panel{padding:15px;border-radius:14px}.content-title-row{align-items:flex-start;flex-direction:column}.content-title-row h2{font-size:19px;line-height:1.25;overflow-wrap:anywhere}.content-title-row .status-tag{align-self:flex-start}.material-content{font-size:13px;line-height:1.75;margin:16px 0}.content-actions{justify-content:stretch}.content-actions button{width:100%;min-height:46px}.quiz-question{padding:12px}.quiz-option{padding:11px;font-size:11px}.inline-form{grid-template-columns:minmax(0,1fr)}.inline-form button{width:100%;min-height:45px}.user-card{padding:10px;gap:8px}.user-card .avatar{height:32px;width:32px}.user-card-main b{font-size:11px}.user-card-meta{font-size:9px}.user-select{padding:9px;min-height:41px}.detail-panel{min-width:0;scroll-margin-top:12px}.access-row{align-items:center;min-height:62px;padding:12px}.access-row>div{min-width:0}.switch{width:48px;height:28px}.switch .slider:before{height:20px;width:20px}.switch input:checked+.slider:before{transform:translateX(20px)}.editor-actions{flex-direction:column-reverse}.editor-actions button{width:100%}.quiz-options-editor{grid-template-columns:1fr}.upload-row{align-items:flex-start;flex-direction:column}.upload-row button{width:100%}.profile-hero{align-items:flex-start;gap:13px}.profile-avatar{height:55px;width:55px;border-radius:17px}.profile-intro h2{font-size:20px}.timeline-row{grid-template-columns:48px 1fr 20px}.floating-theme-toggle{right:12px;bottom:calc(12px + env(safe-area-inset-bottom,0px));height:45px;width:45px;border-radius:15px}.footer{padding:22px 0 16px}.login-visual{min-height:330px;padding:20px}.login-copy{max-width:85%;margin:22px 0 25px}.login-copy h1{font-size:38px;letter-spacing:-1.7px}.login-copy>p{font-size:12px;max-width:310px}.login-visual-footer{font-size:8px;gap:10px}.feature-pills span{font-size:9px;padding:7px 9px}.hero-image-wrap{width:58%;height:60%;opacity:.38}.login-card{padding:25px 20px}.login-card h2{font-size:26px}.floating-theme-toggle.hidden{display:none!important}}
@media(max-width:360px){.main-content{padding-left:9px;padding-right:9px}.stats-grid{grid-template-columns:1fr}.stat-card{display:flex;align-items:center}.stat-icon{margin:0 9px 0 0}.welcome-copy h2{max-width:100%;font-size:22px}.welcome-copy p{max-width:100%}.login-copy h1{font-size:32px}.topbar h1{font-size:21px}.theme-button,.mobile-menu{width:36px;height:36px;min-width:36px}}

/* The landing artwork remains cinematic; the login form itself supports light mode. */
:root[data-theme="light"] .login-screen{background:#e7f8f6}
:root[data-theme="light"] .login-side{background:radial-gradient(ellipse at 50% 25%,rgba(0,183,168,.13),transparent 55%),#effbfa;border-left-color:#b4e2de}
:root[data-theme="light"] .login-card{background:linear-gradient(145deg,#ffffff,#f4fcfb);border-color:#a8dcd7;box-shadow:0 25px 80px rgba(13,94,93,.12)}
:root[data-theme="light"] .login-card h2{color:#123239}
:root[data-theme="light"] .login-safety{border-top-color:#d3eae7}
:root[data-theme="light"] .login-visual{background-image:linear-gradient(90deg,#031017 1%,rgba(3,16,23,.86) 46%,rgba(3,16,23,.15) 100%),url('/static/spectr-hero.jpg')}

/* Support requests / tickets */
.support-form-panel{max-width:980px}.support-form-panel .section-heading{margin-bottom:18px}.support-form-panel h2{margin:8px 0;font-size:clamp(21px,2.8vw,28px)}.support-form-panel .stack-form{max-width:820px}.support-form-panel textarea{min-height:150px}.field-help{font-size:11px;color:var(--muted);line-height:1.5}.ticket-list{display:grid;gap:13px;margin-top:16px}.ticket-card{min-width:0;padding:16px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(140deg,var(--panel2),var(--panel));box-shadow:0 8px 22px rgba(0,0,0,.08)}.ticket-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.ticket-card-head>div{min-width:0}.ticket-card h3{font-size:15px;line-height:1.4;margin:5px 0 0;overflow-wrap:anywhere}.ticket-id{font-size:10px;color:var(--muted);font-weight:800;letter-spacing:.3px;overflow-wrap:anywhere}.ticket-status{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;padding:6px 9px;border-radius:100px;font-size:10px;font-weight:900;border:1px solid var(--line2);background:var(--teal-soft);color:var(--teal)}.ticket-status-new{color:var(--amber);border-color:color-mix(in srgb,var(--amber),transparent 55%);background:color-mix(in srgb,var(--amber),transparent 92%)}.ticket-status-progress{color:var(--teal);border-color:var(--line2)}.ticket-status-waiting{color:var(--amber);border-color:color-mix(in srgb,var(--amber),transparent 55%)}.ticket-status-answered{color:var(--green);border-color:color-mix(in srgb,var(--green),transparent 55%)}.ticket-status-closed{color:var(--muted)}.ticket-description{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;font-size:13px;margin:14px 0}.ticket-attachment{display:inline-flex;align-items:center;gap:6px;color:var(--teal);font-size:11px;font-weight:800;text-decoration:none;border:1px solid var(--line);padding:8px 10px;border-radius:10px}.ticket-attachment:hover{border-color:var(--teal);background:var(--teal-soft)}.ticket-answer{margin-top:14px;padding:13px;border:1px solid color-mix(in srgb,var(--green),transparent 55%);border-radius:12px;background:color-mix(in srgb,var(--green),transparent 94%)}.ticket-answer b{color:var(--green);font-size:11px}.ticket-answer p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.7;margin:6px 0 0}.ticket-waiting{font-size:11px;margin:13px 0 0}.ticket-dates{display:flex;gap:8px 18px;flex-wrap:wrap;margin-top:14px;color:var(--muted);font-size:10px}.ticket-admin-form{display:grid;grid-template-columns:minmax(160px,.45fr) minmax(0,1.55fr) auto;align-items:end;gap:12px;margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.ticket-admin-form textarea{width:100%;min-width:0}.ticket-admin-form .field-label{display:grid;gap:7px}.ticket-admin-form button{white-space:normal;max-width:210px}.ticket-filter-label{max-width:360px;margin:14px 0}.ticket-admin-card{padding:17px}.ticket-admin-card .ticket-description{max-width:1000px}.ticket-list .empty-state{padding:28px 15px}.support-form-panel .upload-box{margin-top:1px}
@media(max-width:900px){.ticket-admin-form{grid-template-columns:1fr}.ticket-admin-form button{max-width:none;width:100%}.ticket-card{padding:13px}.ticket-card-head{gap:8px}.ticket-status{white-space:normal;text-align:center;max-width:135px}}
@media(max-width:600px){.support-form-panel{padding:15px}.support-form-panel .section-heading{display:block}.support-form-panel .section-heading h2{font-size:21px}.ticket-card h3{font-size:13px}.ticket-id{font-size:9px}.ticket-description{font-size:12px}.ticket-status{font-size:9px;padding:6px 7px;max-width:108px}.ticket-dates{display:grid;gap:4px}.ticket-admin-form{gap:10px}.ticket-filter-label{max-width:none}.ticket-card-head{align-items:flex-start}}