@import url("logo.css");
:root{--bg:#eef2f6;--panel:#fff;--ink:#17212b;--muted:#6d7884;--line:#dfe5eb;--accent:#7357ff;--accent2:#20b486;--danger:#d44b5e;--board:#163f35;--board2:#0e3029;--chalk:#f8f7e9;--wood:#b8753c;--shadow:0 18px 50px rgba(29,42,54,.10);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink)}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}button,input,textarea{font:inherit}.auth-body{min-height:100vh;background:radial-gradient(circle at 12% 12%,#e3dcff 0,transparent 35%),radial-gradient(circle at 88% 80%,#d4f6ea 0,transparent 32%),#edf1f5}.auth-shell{min-height:100vh;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(420px,.7fr);gap:42px;align-items:center;width:min(1200px,calc(100% - 48px));margin:auto;padding:48px 0}.auth-hero{padding:30px}.school-mark{width:78px;height:78px;border-radius:24px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),#9d8cff);color:white;font-weight:900;letter-spacing:.06em;font-size:1.55rem;box-shadow:0 14px 34px rgba(115,87,255,.28)}.school-mark.small{width:46px;height:46px;border-radius:14px;font-size:1rem;box-shadow:none;flex:0 0 auto}.auth-hero h1{font-size:clamp(2.6rem,6vw,5.4rem);line-height:.98;letter-spacing:-.055em;margin:.35em 0 .3em;max-width:850px}.auth-hero>p:not(.eyebrow){font-size:1.15rem;line-height:1.7;color:#4f5b66;max-width:720px}.eyebrow{text-transform:uppercase;letter-spacing:.14em;font-size:.78rem;font-weight:900;color:var(--accent);margin:0 0 8px}.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.hero-chips span,.pill,.live-pill,.count-badge{border-radius:999px;padding:8px 12px;background:#fff;border:1px solid rgba(23,33,43,.08);font-weight:800;font-size:.82rem}.auth-card{background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.8);border-radius:28px;padding:34px;box-shadow:var(--shadow)}.auth-card h2{font-size:2rem;margin:16px 0 24px}.stack-form{display:grid;gap:16px}.stack-form label,.teacher-console label{display:grid;gap:7px;font-size:.82rem;font-weight:800;color:#52606c}.stack-form input,.stack-form textarea,.teacher-console input,.teacher-console textarea,.inline-form input,.note-form textarea{width:100%;border:1px solid var(--line);background:#fbfcfd;border-radius:13px;padding:13px 14px;outline:none;color:var(--ink);transition:.18s}.stack-form input:focus,.stack-form textarea:focus,.teacher-console input:focus,.teacher-console textarea:focus,.inline-form input:focus,.note-form textarea:focus{border-color:var(--accent);box-shadow:0 0 0 4px rgba(115,87,255,.10);background:#fff}.primary-btn,.secondary-btn,.ghost-btn,.icon-btn{border:0;border-radius:12px;cursor:pointer;font-weight:850;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.primary-btn{background:var(--accent);color:#fff;padding:13px 17px;box-shadow:0 9px 20px rgba(115,87,255,.20)}.secondary-btn{background:#f0edff;color:#5d45d7;padding:11px 14px}.ghost-btn{background:transparent;color:#62707b;padding:10px 12px}.icon-btn{width:38px;height:38px;background:#f2f5f7;color:#52606c}.hint{font-size:.84rem;line-height:1.55;color:var(--muted)}.flash{padding:12px 14px;border-radius:12px;margin-bottom:16px;font-weight:750;font-size:.9rem}.flash.success{background:#e5f8f1;color:#14795a}.flash.error{background:#fdebed;color:#a53042}.app-shell{display:grid;grid-template-columns:260px minmax(0,1fr);min-height:100vh}.sidebar{position:sticky;top:0;height:100vh;background:#16202a;color:#fff;padding:22px 18px;display:flex;flex-direction:column;gap:26px}.brand{display:flex;align-items:center;gap:12px;padding:4px 4px 18px}.brand div:last-child{display:grid;gap:2px}.brand strong{font-size:.95rem}.brand span{font-size:.75rem;color:#8e9aa5}.sidebar nav{display:grid;gap:7px}.nav-link{display:flex;gap:12px;align-items:center;color:#aeb8c1;text-decoration:none;padding:11px 12px;border-radius:12px;font-weight:750;font-size:.9rem}.nav-link:hover,.nav-link.active{background:#263341;color:#fff}.nav-link.active{box-shadow:inset 3px 0 0 var(--accent)}.sidebar-user{margin-top:auto;display:grid;grid-template-columns:42px 1fr 38px;gap:9px;align-items:center;padding:14px 8px;border-top:1px solid rgba(255,255,255,.08)}.sidebar-user .avatar,.avatar{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#f0edff,#dcd5ff);color:#5d45d7;display:grid;place-items:center;font-weight:900}.sidebar-user div:nth-child(2){display:grid;min-width:0}.sidebar-user strong{font-size:.82rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.sidebar-user span{font-size:.72rem;color:#8e9aa5}.content{padding:34px;max-width:1500px;width:100%;margin:0 auto}.page-header{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:26px}.page-header h1{font-size:clamp(2rem,4vw,3.6rem);letter-spacing:-.045em;margin:0}.page-header p:not(.eyebrow){margin:8px 0 0;color:var(--muted)}.dashboard-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:18px}.card-span-2{grid-column:span 1}.board-preview{background:linear-gradient(145deg,var(--board),var(--board2));color:var(--chalk);border-radius:22px;padding:26px;box-shadow:var(--shadow);min-height:220px}.board-top{display:flex;justify-content:space-between;gap:10px;color:#9ec3b8;font-size:.72rem;font-weight:900;letter-spacing:.1em}.board-preview h2{font-family:"Segoe Print","Comic Sans MS",cursive;font-size:2rem;margin:24px 0 10px}.board-preview p{font-family:"Segoe Print","Comic Sans MS",cursive;line-height:1.7;color:#f1f1dc}.stat-card,.settings-card,.lesson-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 10px 28px rgba(31,43,55,.05)}.stat-card{display:flex;flex-direction:column;justify-content:center;min-height:220px}.stat-card>span{color:var(--muted);font-weight:800;font-size:.8rem}.stat-card strong{font-size:3.3rem;letter-spacing:-.05em;margin:8px 0}.stat-card .text-stat{font-size:1.9rem}.stat-card small{color:var(--muted)}.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin:30px 0 16px}.section-head h2{margin:0;font-size:1.7rem}.lesson-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.lesson-mini{background:#fff;border:1px solid var(--line);border-radius:16px;padding:17px;display:grid;gap:8px}.lesson-mini>span,.lesson-code{font-size:.72rem;font-weight:900;color:var(--accent);letter-spacing:.08em}.lesson-mini strong{line-height:1.25}.lesson-mini small{color:var(--muted)}.classroom-layout{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(320px,.65fr);gap:20px}.classroom-layout.student-view{grid-template-columns:minmax(0,1.3fr) minmax(330px,.7fr)}.blackboard-wrap{display:grid;gap:16px}.blackboard{min-height:430px;border-radius:20px;background:radial-gradient(circle at 50% 0,rgba(255,255,255,.05),transparent 45%),linear-gradient(135deg,var(--board),var(--board2));border:13px solid var(--wood);box-shadow:inset 0 0 0 2px rgba(59,31,14,.35),0 18px 42px rgba(28,37,42,.18);padding:30px;color:var(--chalk);position:relative}.blackboard:after{content:"";position:absolute;left:20%;right:20%;bottom:-18px;height:8px;border-radius:8px;background:#d2a06f;box-shadow:0 6px 10px rgba(0,0,0,.15)}.chalk-line{display:flex;justify-content:space-between;gap:16px;color:#a9c8bd;font-size:.72rem;font-weight:800;letter-spacing:.08em}.blackboard h2{font-family:"Segoe Print","Comic Sans MS",cursive;font-size:clamp(2rem,5vw,3.5rem);font-weight:650;margin:34px 0 20px;transform:rotate(-.4deg)}.chalk-text{font-family:"Segoe Print","Comic Sans MS",cursive;font-size:1.15rem;line-height:1.85;color:#f2f1dd;white-space:normal}.chalk-sign{position:absolute;right:32px;bottom:25px;color:#9fc5b7;font-family:"Segoe Print","Comic Sans MS",cursive}.teacher-console{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px;display:grid;grid-template-columns:1fr 2fr auto;gap:14px;align-items:end}.teacher-console label{height:100%}.teacher-console textarea{resize:vertical}.notebook-panel{background:#fffdf7;border:1px solid #e8e0ce;border-radius:20px;padding:20px;box-shadow:var(--shadow);position:relative;overflow:hidden}.notebook-panel:before{content:"";position:absolute;left:38px;top:0;bottom:0;border-left:2px solid rgba(220,95,95,.22);pointer-events:none}.notebook-head{display:flex;justify-content:space-between;align-items:flex-start;padding-left:32px;position:relative}.notebook-head h2{margin:0;font-family:Georgia,serif}.notebook-head>span{font-size:1.7rem}.note-form{padding:16px 0 10px 32px;display:grid;gap:9px}.note-form textarea{background:repeating-linear-gradient(#fff 0,#fff 31px,#d9e8f4 32px);line-height:32px;resize:vertical}.notebook-list{display:grid;gap:12px;padding:10px 0 0 32px;max-height:620px;overflow:auto}.notebook-entry{border-bottom:1px solid #e6e0d3;padding:8px 0 14px}.notebook-entry>div{display:flex;justify-content:space-between;gap:12px}.notebook-entry strong{font-size:.82rem}.notebook-entry time{font-size:.7rem;color:var(--muted)}.notebook-entry p{margin:7px 0 0;font-family:Georgia,serif;line-height:1.55}.live-pill{display:flex;align-items:center;gap:8px;background:#e9f8f2;color:#18775b}.live-pill i{width:8px;height:8px;border-radius:50%;background:#22ae82;box-shadow:0 0 0 5px rgba(34,174,130,.12)}.lesson-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.lesson-card{min-height:230px;position:relative}.lesson-card h2{font-size:1.3rem}.lesson-card p{color:var(--muted);line-height:1.6}.lesson-icon{font-size:2rem;margin-top:20px}.lesson-status{position:absolute;bottom:20px;color:#258668;font-size:.78rem;font-weight:850}.filter-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.filter-chip{text-decoration:none;color:#5f6b75;background:#fff;border:1px solid var(--line);padding:8px 12px;border-radius:999px;font-weight:800;font-size:.8rem}.filter-chip.active{background:#ede9ff;border-color:#cfc6ff;color:#5d45d7}.paper-stack{display:grid;gap:14px}.paper-note{background:#fffdf7;border:1px solid #e7dfcf;border-radius:16px;padding:20px 24px;box-shadow:0 7px 20px rgba(68,53,34,.05)}.paper-meta{display:flex;justify-content:space-between;gap:16px}.paper-meta time{color:var(--muted);font-size:.78rem}.paper-note p{font-family:Georgia,serif;line-height:1.65}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.settings-card h2{margin-top:0}.settings-card.wide{margin-top:18px}.student-admin-list{display:grid;gap:8px}.student-admin-row{display:grid;grid-template-columns:44px minmax(180px,1fr) auto auto;gap:12px;align-items:center;border-top:1px solid var(--line);padding:13px 0}.student-name{display:grid}.student-name span{font-size:.76rem;color:var(--muted);margin-top:3px}.inline-form{display:flex;gap:8px}.inline-form input{width:115px}.empty-state{padding:28px;border:1px dashed #ccd4dc;border-radius:16px;color:var(--muted);text-align:center;background:rgba(255,255,255,.55)}@media(max-width:1100px){.app-shell{grid-template-columns:82px 1fr}.sidebar{padding:18px 12px}.brand div:last-child,.nav-link span:last-child,.sidebar-user div:nth-child(2),.sidebar-user form{display:none}.brand{justify-content:center}.nav-link{justify-content:center;font-size:1.2rem}.sidebar-user{grid-template-columns:1fr;justify-items:center}.dashboard-grid{grid-template-columns:1fr 1fr}.board-preview{grid-column:1/-1}.lesson-strip{grid-template-columns:1fr 1fr}.classroom-layout,.classroom-layout.student-view{grid-template-columns:1fr}.teacher-console{grid-template-columns:1fr}.lesson-grid{grid-template-columns:1fr 1fr}}@media(max-width:760px){.auth-shell{grid-template-columns:1fr;width:min(100% - 28px,560px);padding:22px 0}.auth-hero{padding:10px}.auth-hero h1{font-size:2.7rem}.app-shell{display:block}.sidebar{position:fixed;z-index:10;left:0;right:0;bottom:0;top:auto;height:auto;display:grid;grid-template-columns:repeat(5,1fr);padding:8px;background:#16202af5}.brand,.sidebar-user{display:none}.sidebar nav{display:contents}.nav-link{padding:8px 5px;display:grid;gap:2px;text-align:center;font-size:1.05rem}.nav-link span:last-child{display:block;font-size:.58rem}.content{padding:24px 16px 94px}.page-header{align-items:flex-start;flex-direction:column}.dashboard-grid,.settings-grid,.lesson-grid,.lesson-strip{grid-template-columns:1fr}.stat-card{min-height:150px}.blackboard{min-height:360px;border-width:9px;padding:22px}.student-admin-row{grid-template-columns:44px 1fr}.student-admin-row form{grid-column:2}.inline-form{flex-wrap:wrap}.notebook-panel:before{left:24px}.notebook-head,.note-form,.notebook-list{padding-left:18px}.teacher-console{padding:14px}.auth-card{padding:24px}.hero-chips{display:none}}