.page-header{margin-bottom:20px}.page-header p{color:var(--subtext)}.kpi-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;display:grid}.kpi-card{background:var(--card);border:1px solid var(--border);border-radius:16px;flex-direction:column;gap:8px;padding:18px;transition:all .25s;display:flex}.kpi-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.kpi-card h4{color:var(--subtext);font-size:13px}.kpi-card p{font-size:24px;font-weight:600}.kpi-card.revenue p{color:#10b981}.kpi-card.highlight{background:linear-gradient(135deg, var(--primary), #6366f1);color:#fff;border:none}.chart-card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:20px}.insight-card{background:var(--card);border:1px solid var(--border);border-radius:16px;margin-top:20px;padding:20px}.grid-2{grid-template-columns:1fr 1fr;gap:16px;display:grid}.chart-card.full{grid-column:span 2}.insight-list{flex-direction:column;gap:10px;margin-top:10px;display:flex}.insight-item{background:var(--primary-soft);border-radius:10px;padding:10px}.students-container{padding:20px}.student-card{background:var(--card);color:var(--text);border:1px solid var(--border);box-shadow:var(--shadow-sm);border-radius:16px;padding:16px;transition:all .25s}.student-card:hover{transform:translateY(-4px)scale(1.01)}.student-card:active{transform:scale(.98)}.subtext{color:var(--subtext);font-size:13px}.student-card{background:var(--card);border:1px solid var(--border);cursor:pointer;border-radius:16px;padding:16px;transition:all .25s}.student-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}.card-top{justify-content:space-between;display:flex}.fee{color:#10b981;margin-top:10px;font-size:24px;font-weight:600}.meta{color:var(--subtext);justify-content:space-between;margin-top:12px;font-size:12px;display:flex}.full-modal{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);z-index:9999;background:#0006;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal-content{background:var(--card);border-radius:16px;width:80%;max-width:900px;padding:30px}.grid-form{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px;display:grid}.form-actions{grid-column:span 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slideIn;position:fixed;top:20px;right:20px;box-shadow:0 8px 20px #00000014}.toast.success{border-left:4px solid #16a34a}.toast.error{border-left:4px solid #dc2626}@keyframes slideIn{0%{opacity:0;transform:translate(30px)}to{opacity:1;transform:translate(0)}}.overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#0000004d;justify-content:center;align-items:center;width:100%;height:100%;display:flex;position:fixed;top:0;left:0}.modal{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:14px;width:360px;max-width:90%;padding:20px;animation:.2s modalFade;box-shadow:0 10px 30px #00000026}.close-btn{margin-top:12px}@keyframes modalFade{0%{opacity:0;transform:translateY(20px)scale(.96)}to{opacity:1;transform:translateY(0)scale(1)}}.modal input{border:1px solid var(--border);background:var(--card);width:100%;color:var(--text);border-radius:8px;margin-top:8px;padding:10px}.modal input:focus{border-color:var(--primary);outline:none}.sidebar{background:var(--card);border-right:1px solid var(--border);flex-direction:column;justify-content:space-between;width:220px;height:100vh;padding:16px;display:flex;position:fixed}.logo{margin-bottom:20px;font-size:18px;font-weight:700}.nav{flex-direction:column;gap:6px;display:flex}.nav-item{color:var(--text);border-radius:10px;align-items:center;gap:10px;padding:10px 12px;text-decoration:none;transition:all .2s;display:flex}.nav-item:hover{background:var(--primary-soft)}.nav-item.active{background:var(--primary);color:#fff}.sidebar-footer{margin-top:auto;padding-bottom:30px}.navbar{background:var(--card);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.nav-left h3{margin:0;font-size:18px}.nav-right{align-items:center;gap:14px;display:flex}.avatar{background:var(--primary-soft);width:34px;height:34px;color:var(--primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex}.avatar:hover{transform:scale(1.05)}.user-menu{position:relative}.dropdown{background:var(--card);border:1px solid var(--border);width:180px;box-shadow:var(--shadow-md);border-radius:12px;animation:.2s fadeIn;position:absolute;top:45px;right:0;overflow:hidden}.dropdown-item{cursor:pointer;align-items:center;gap:10px;padding:10px 14px;transition:background .2s;display:flex}.dropdown-item:hover{background:var(--primary-soft)}.dropdown-item.logout{color:#ef4444}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.layout{background:var(--bg);min-height:100vh;display:flex}.main{flex-direction:column;flex:1;margin-left:250px;display:flex}.topbar{z-index:10;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0}.content{height:calc(100vh - 60px);padding:24px;overflow-y:auto}.topbar{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.teachers-container{padding:20px}.controls{gap:10px;margin-bottom:16px;display:flex}.empty{color:var(--subtext);margin-top:10px}.card-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px;display:grid}.teacher-card{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:16px;padding:16px;transition:all .25s;box-shadow:0 6px 18px #0000000f}.teacher-card:hover{border-color:var(--primary);transform:translateY(-4px);box-shadow:0 10px 26px #00000014}.card-header{justify-content:space-between;align-items:center;display:flex}.card-header h3{margin:0;font-size:16px}.subject{color:var(--subtext);font-size:13px}.badge{color:var(--primary);background:#4f46e51a;border-radius:8px;padding:4px 8px;font-size:12px}.main-metric{margin-top:12px;font-size:26px;font-weight:600}.main-metric small{color:var(--subtext);font-size:12px;display:block}.sub-metrics{justify-content:space-between;margin-top:12px;display:flex}.sub-metrics p{color:var(--subtext);margin:0;font-size:12px}.sub-metrics strong{font-size:14px}.card-footer{margin-top:14px}.details{flex-direction:column;gap:10px;display:flex}.detail-row{justify-content:space-between;font-size:14px;display:flex}.page-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.page-header p{color:var(--subtext);font-size:14px}.stats-strip{gap:16px;margin-bottom:20px;display:flex}.stat{background:var(--card);border:1px solid 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p{color:var(--subtext);margin-top:10px}.section{margin-top:50px}.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:20px;display:grid}.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:20px}.cta{margin-top:60px}.hero{color:#fff;background:linear-gradient(135deg,#4f46e5,#6366f1);border-radius:20px;padding:60px}button{background:var(--primary);color:#fff;border-radius:10px;padding:10px 20px}:root{--bg:#f8fafc;--card:#fff;--text:#111827;--subtext:#6b7280;--border:#e5e7eb;--primary:#4f46e5;--primary-soft:#4f46e51a;--success:#16a34a;--error:#dc2626;--shadow-sm:0 4px 10px #0000000d;--shadow-md:0 8px 20px #00000014}.dark{--bg:#0f172a;--card:#1e293b;--text:#f1f5f9;--subtext:#94a3b8;--border:#334155;--primary:#6366f1;--primary-soft:#6366f126;--shadow-sm:0 4px 10px #0006;--shadow-md:0 8px 20px #00000080}h1{font-size:24px;font-weight:600}h2{font-size:20px;font-weight:600}h3{font-size:16px;font-weight:500}p{color:var(--subtext);font-size:14px}*{transition:background .2s,color .2s,border-color .2s,transform .15s}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font-family:Inter,sans-serif;transition:background .3s,color .3s}h1,h2,h3{margin:0;font-weight:600}p{margin:0}.card{background:var(--card);border:1px solid var(--border);border-radius:14px}button:hover{opacity:.9;transform:translateY(-1px)}input,select{border:1px solid var(--border);background:var(--card);color:var(--text);border-radius:10px;padding:10px;transition:all .2s}input:focus,select:focus{border-color:var(--primary);outline:none}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:var(--border);border-radius:10px}button{background:var(--primary);color:#fff;cursor:pointer;border:none;border-radius:10px;padding:8px 14px;font-weight:500;transition:all .15s}button:hover{transform:translateY(-1px)}button:active{transform:scale(.97)}input:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft);outline:none}.teacher-card,.kpi-card{will-change:transform}.teacher-card:hover,.kpi-card:hover{transform:translateY(-4px)scale(1.01)}.skeleton{background:linear-gradient(90deg, var(--border) 25%, #e5e7eb 50%, var(--border) 75%);background-size:200% 100%;border-radius:8px;animation:1.2s infinite shimmer}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.dashboard-container{animation:.3s fadeIn}