@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700;800&family=Space+Grotesk:wght@500;600;700&display=swap');
:root{--navy:#142d4e;--blue:#2865c5;--ink:#1d2939;--muted:#667085;--line:#e5eaf1;--bg:#f5f7fb;--green:#16845b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:14px 'DM Sans',Arial,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.layout{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:var(--navy);color:#d9e4f2;padding:20px 15px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:10px;color:white;padding:0 7px 26px}.brand b{display:block;font:700 15px 'Space Grotesk'}.brand small{display:block;font-size:10px;color:#aebed2;margin-top:3px}.logo{width:42px;height:42px;border-radius:13px;background:linear-gradient(135deg,#69a9ff,#2862bd);display:grid;place-items:center;color:white;font:700 17px 'Space Grotesk';flex:none}.nav-label,.eyebrow{font-size:10px;font-weight:800;letter-spacing:1.3px;color:#8ba4c4}.nav-label{padding:8px 12px}.sidebar nav{display:grid;gap:5px}.sidebar nav a{padding:11px 12px;border-radius:8px;color:#c6d3e3;font-weight:600;display:flex;gap:12px;align-items:center}.sidebar nav a.active,.sidebar nav a:hover{background:#29496f;color:white}.sidebar nav i{font-style:normal;width:20px;text-align:center}.side-user{margin-top:auto;border-top:1px solid #ffffff22;padding:17px 5px 12px;display:flex;align-items:center;gap:9px}.avatar{width:34px;height:34px;border-radius:50%;background:#dce9ff;color:#24559d;display:grid;place-items:center;font-weight:800}.side-user b,.side-user small{display:block}.side-user b{font-size:11px;color:white}.side-user small{font-size:9px;color:#9fb2ca;margin-top:3px}.logout{padding:10px;color:#c6d3e3}.main{margin-left:248px;min-height:100vh;display:flex;flex-direction:column}.topbar{height:64px;background:white;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;font-size:11px;font-weight:800;color:#526174;position:sticky;top:0;z-index:10}.topbar b{color:#aab3c0;margin:0 8px}.top-user{font-weight:500;color:#7b8798}.menu-toggle{display:none}.content{padding:28px;flex:1;width:100%;max-width:1500px;margin:auto}.footer{padding:16px 28px;border-top:1px solid var(--line);font-size:10px;color:#98a2b3}.page-title,.editor-heading{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:22px}.page-title h1,.editor-heading h1{font:700 26px 'Space Grotesk';margin:4px 0;color:#1b304e}.page-title p{margin:0;color:var(--muted);font-size:12px}.eyebrow{color:#6482a8;margin:0}.btn{border:1px solid transparent;border-radius:8px;padding:10px 14px;font-size:11px;font-weight:800;display:inline-flex;align-items:center;justify-content:center;gap:6px;cursor:pointer}.btn.primary{background:var(--blue);color:white}.btn.secondary{background:#f1f4f8;color:#526174;border-color:#e4e9f0}.btn.light{background:white;color:#24549a}.btn.full{width:100%}.btn.tiny{padding:6px 8px;font-size:10px}.btn.danger{background:#fff0f0;color:#b42318}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}.stats article,.panel{background:white;border:1px solid var(--line);border-radius:12px;box-shadow:0 7px 25px #1c36520a}.stats article{padding:17px}.stats small{display:block;color:#7e8999;font-size:10px}.stats strong{display:block;font:700 27px 'Space Grotesk';margin-top:10px;color:#1e3452}.panel{padding:19px;margin-bottom:18px;min-width:0}.panel h2{font:700 15px 'Space Grotesk';margin:0 0 14px}.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.panel-head h2{margin:0}.panel-head a{color:var(--blue);font-size:11px;font-weight:700}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;white-space:nowrap;text-align:left}th{font-size:10px;color:#8792a2;padding:10px;border-bottom:1px solid var(--line)}td{font-size:11px;color:#526174;padding:12px 10px;border-bottom:1px solid #f0f2f5}.pill,.tag{display:inline-block;border-radius:30px;padding:5px 8px;font-size:9px;font-weight:800;background:#f0f2f6;color:#667085}.pill.pending{background:#fff2dc;color:#a9680b}.pill.approved{background:#e4f6ed;color:#16845b}.pill.rejected,.pill.suspended{background:#fff0f0;color:#b42318}.alert{padding:11px 13px;border-radius:8px;font-size:11px;margin:0 0 15px}.alert.success{background:#e6f7ef;color:#13764f}.alert.danger{background:#fff0f0;color:#b42318}.alert.warning{background:#fff5df;color:#9a650d}.muted{font-size:11px;color:var(--muted);line-height:1.6}.welcome{background:linear-gradient(110deg,#17385f,#2d6cb2);color:white;padding:25px;border-radius:14px;margin-bottom:20px}.welcome h1{font:700 25px 'Space Grotesk';margin:7px 0}.welcome p{color:#d7e6f7;font-size:12px;margin:0 0 16px}.welcome .eyebrow{color:#a9c9f5}.form-grid{display:grid;gap:12px}.form-grid label{display:grid;gap:6px;font-size:11px;font-weight:700;color:#475467}.form-grid input,.form-grid textarea,.inline-form input{width:100%;border:1px solid #dce3ec;border-radius:8px;padding:11px 12px;outline:none;background:#fff;color:#26364d}.form-grid input:focus,.form-grid textarea:focus,.inline-form input:focus{border-color:#6b9ce2;box-shadow:0 0 0 3px #eaf2ff}.inline-form{display:flex;gap:9px;align-items:center}.inline-form input{max-width:350px}.lesson-cards,.project-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.lesson-cards .panel h2,.project-grid .panel h2{margin:10px 0}.lesson-content{padding:12px;background:#f7f9fc;border-radius:8px;margin:10px 0;white-space:normal;line-height:1.7;font-size:12px}details summary{cursor:pointer;color:var(--blue);font-size:11px;font-weight:700;padding:12px 0}.tag{background:#eaf1ff;color:#3168b8}.project-symbol{width:42px;height:42px;border-radius:10px;background:#eaf1ff;color:#3268bd;display:grid;place-items:center;font-weight:800}.auth-body,.install-body{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 80% 10%,#dceaff,transparent 35%),#f3f6fb}.auth-card,.install-card{width:min(100%,420px);background:white;padding:30px;border:1px solid var(--line);border-radius:17px;box-shadow:0 15px 50px #18375e12}.auth-card>.logo,.install-card>.logo{margin-bottom:17px}.auth-card h1,.install-card h1{font:700 25px 'Space Grotesk';margin:4px 0 7px;color:#1b3557}.auth-card .muted,.install-card .muted{margin:0 0 20px}.auth-switch{text-align:center;font-size:11px;color:#667085;margin:18px 0 0}.auth-switch a{color:var(--blue);font-weight:800}.tiny{font-size:9px;color:#8792a2;line-height:1.5;margin-top:16px}.install-card{width:min(100%,500px)}.install-card h3{font:700 13px 'Space Grotesk';margin:12px 0 0;padding-top:8px;border-top:1px solid var(--line)}.workspace{display:grid;grid-template-columns:1fr 1fr;gap:14px;height:calc(100vh - 205px);min-height:440px}.code-panel,.preview-panel{background:white;border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column;min-height:0}.pane-title{height:43px;padding:0 13px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:10px;font-weight:800;letter-spacing:.6px}.pane-title span{font-size:9px;letter-spacing:0;color:#16845b}.file-tabs{display:flex;border-bottom:1px solid var(--line);padding:0 9px}.file-tab{border:0;background:none;padding:10px 12px;font-size:10px;color:#778397;border-bottom:2px solid transparent}.file-tab.active{border-color:#2865c5;color:#2865c5;font-weight:800}.code-panel textarea{flex:1;min-height:0;resize:none;border:0;outline:0;background:#172033;color:#d9e7ff;padding:15px;font:12px/1.75 Consolas,monospace;tab-size:2}.editor-tools{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}.preview-panel iframe{border:0;width:100%;height:100%;flex:1;background:white}.online-dot{color:#16845b}.inline{display:flex;gap:5px;align-items:center}
@media(max-width:1050px){.sidebar{width:220px}.main{margin-left:220px}.content{padding:22px}.stats{grid-template-columns:repeat(2,1fr)}}
@media(max-width:740px){.sidebar{transform:translateX(-100%);transition:.2s;width:255px;box-shadow:10px 0 30px #10243d33}.sidebar.open{transform:translateX(0)}.main{margin-left:0}.topbar{height:58px;padding:0 14px}.menu-toggle{display:block;border:0;background:none;font-size:19px;color:#526174}.top-user{display:none}.content{padding:20px 14px}.page-title,.editor-heading{align-items:flex-start;flex-direction:column}.page-title h1,.editor-heading h1{font-size:23px}.stats{gap:9px}.stats article{padding:13px}.stats strong{font-size:23px}.panel{padding:14px}.lesson-cards,.project-grid{grid-template-columns:1fr}.inline-form{align-items:stretch;flex-direction:column}.inline-form input{max-width:none}.workspace{height:auto;min-height:0;grid-template-columns:1fr;grid-template-rows:minmax(330px,55vh) minmax(280px,45vh)}.code-panel,.preview-panel{min-height:280px}.editor-heading .btn{align-self:flex-start}.footer{padding:14px}.auth-card,.install-card{padding:23px}}
.file-manager{padding:13px 16px}.file-manager .inline-form{margin-bottom:8px}.editor-tools form{margin:0 0 0 auto}.editor-tools form .btn{height:100%}.file-tabs{overflow-x:auto;white-space:nowrap}.file-tab{flex:none}
@media(max-width:740px){.editor-tools{flex-wrap:wrap}.editor-tools form{margin-left:0}.file-manager .inline-form{display:flex}}

/* CODE CLASS v3 enhancements */
.CodeMirror{height:100%!important;min-height:420px;font:13px/1.6 ui-monospace,SFMono-Regular,Consolas,monospace;border:0}
.CodeMirror-gutters{background:#f7f9fc;border-right:1px solid #e5eaf2}
#codeEditor{min-height:420px}
.file-manager{display:grid;gap:12px}
.file-manager input[type=file]{max-width:100%;padding:8px}
.inline{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.unsaved{color:#b54708!important}
@media(max-width:700px){.CodeMirror{min-height:340px}.file-manager .inline-form{display:grid;grid-template-columns:1fr}.editor-heading .inline{width:100%}}

/* Bulk user management */
.bulk-toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.bulk-toolbar h2{margin:0 0 5px}.bulk-toolbar p{margin:0}
.select-all{display:flex;align-items:center;gap:8px;white-space:nowrap;font-weight:600}
.bulk-grid{display:grid;grid-template-columns:1.2fr 1.2fr 1.2fr auto;gap:12px;align-items:end;margin-bottom:12px}
.bulk-grid label{display:grid;gap:7px;font-size:13px;font-weight:600}
.bulk-grid input,.bulk-grid select{min-width:0;width:100%;padding:11px 12px;border:1px solid var(--line,#d8e0ed);border-radius:9px;background:#fff;color:inherit}
.user-check,#selectAllUsers{width:17px;height:17px;accent-color:#2864c8;cursor:pointer}
.bulk-grid [hidden]{display:none!important}
.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(max-width:900px){.bulk-grid{grid-template-columns:1fr 1fr}.bulk-grid button{min-height:42px}}
@media(max-width:600px){.bulk-toolbar{align-items:flex-start;flex-direction:column}.bulk-grid{grid-template-columns:1fr}.bulk-grid button{width:100%}}