@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@500;600;700&display=swap";
:root{--bg-primary:#f8fafc;--bg-secondary:#f1f5f9;--bg-card:#ffffffb3;--bg-card-hover:#fffffff2;--accent-blue:#2563eb;--accent-purple:#7c3aed;--accent-cyan:#0891b2;--text-primary:#0f172a;--text-secondary:#475569;--border:#00000014;--border-hover:#00000026;--overlay-light:#00000008;--overlay-hover:#0000000f;--overlay-active:#0000001a;--danger:#ef4444;--success:#10b981;--warning:#f59e0b;--font-sans:"Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display:"Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 2px 8px #0003;--shadow-md:0 4px 16px #0000004d;--shadow-lg:0 8px 32px #0006;--shadow-glow-blue:0 0 20px #3b82f666;--shadow-glow-purple:0 0 20px #8b5cf666;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.25s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--sidebar-width:260px;--sidebar-collapsed-width:80px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background-color:var(--bg-secondary);color:var(--text-primary);background-image:radial-gradient(circle at 15%,#8b5cf60d,#0000 25%),radial-gradient(circle at 85% 30%,#06b6d40d,#0000 25%);background-attachment:fixed;min-height:100vh;line-height:1.6;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);letter-spacing:-.02em}a{color:var(--accent-cyan);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--accent-blue)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-secondary)}::-webkit-scrollbar-thumb{background:#00000026;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#00000040}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulseGlow{0%,to{box-shadow:0 0 15px #8b5cf64d}50%{box-shadow:0 0 25px #8b5cf699}}@keyframes float{0%,to{transform:translateY(0)scale(1)}50%{transform:translateY(-30px)scale(1.05)}}.card{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-normal);padding:24px;animation:.5s forwards slideUp;position:relative;overflow:hidden}.card:before{content:"";background:linear-gradient(90deg,#0000,#fff6,#0000);width:50%;height:100%;transition:left .5s;position:absolute;top:0;left:-100%;transform:skew(-20deg)}.card:hover:before{left:150%}.card:hover{background:var(--bg-card-hover);border-color:var(--border-hover);box-shadow:var(--shadow-lg);transform:translateY(-2px)}@media (max-width:640px){.card{border-radius:var(--radius-md);padding:16px}}.card-static{background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}.btn-primary{background:linear-gradient(135deg, var(--accent-purple), var(--accent-blue));color:#fff;font-family:var(--font-sans);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);border:none;justify-content:center;align-items:center;gap:8px;padding:12px 28px;font-size:.95rem;font-weight:600;display:inline-flex;box-shadow:0 4px 15px #0003}.btn-primary:hover:not(:disabled){box-shadow:var(--shadow-glow-purple);transform:translateY(-2px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;filter:grayscale(.5)}.btn-danger{color:#fff;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);background:linear-gradient(135deg,#ef4444,#b91c1c);border:none;justify-content:center;align-items:center;gap:8px;padding:12px 28px;font-weight:600;display:inline-flex}.btn-danger:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 0 15px #ef444466}.btn-secondary{border:1px solid var(--border);color:var(--text-primary);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);background:#ffffff0d;justify-content:center;align-items:center;gap:8px;padding:12px 28px;font-weight:600;display:inline-flex}.btn-secondary:hover:not(:disabled){border-color:var(--border-hover);background:#ffffff1a}.btn-sm{padding:8px 16px;font-size:.85rem}.input{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;color:var(--text-primary);font-family:var(--font-sans);transition:all var(--transition-normal);padding:12px 16px;font-size:.95rem}.input:focus{border-color:var(--accent-purple);background:var(--bg-card-hover);outline:none;box-shadow:0 0 0 3px #8b5cf626}.input::placeholder{color:var(--text-secondary);opacity:.7}select.input option{color:var(--text-primary);background:var(--bg-card);font-size:16px}select.input{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-position:right 16px center;background-repeat:no-repeat;padding-right:40px}select.input option{background:var(--bg-primary);color:var(--text-primary)}.dashboard-layout{min-height:100vh;display:flex}.main-content{margin-left:var(--sidebar-width);transition:margin-left var(--transition-normal);width:calc(100% - var(--sidebar-width));flex:1;padding:32px}@media (max-width:1024px){.main-content{width:100%;margin-left:0;padding:80px 16px 24px}}@media (max-width:640px){.main-content{padding:76px 12px 16px}h1{font-size:1.75rem}h2{font-size:1.5rem}h3{font-size:1.25rem}.btn-primary,.btn-secondary,.btn-danger{padding:10px 20px;font-size:.9rem}}.form-group{flex-direction:column;gap:8px;margin-bottom:24px;display:flex}.form-label{color:var(--text-secondary);font-size:.875rem;font-weight:500}.form-row{grid-template-columns:1fr 1fr;gap:20px;display:grid}@media (max-width:768px){.form-row{grid-template-columns:1fr;gap:16px}.input{font-size:16px}}.badge{letter-spacing:.05em;text-transform:uppercase;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border-radius:50px;align-items:center;padding:4px 12px;font-size:.75rem;font-weight:600;display:inline-flex}.badge-admin{color:#dc2626;background:#ef444426;border:1px solid #ef44444d}.badge-teacher{color:#7c3aed;background:#8b5cf626;border:1px solid #8b5cf64d}.badge-student{color:#0891b2;background:#06b6d426;border:1px solid #06b6d44d}.badge-success{color:#059669;background:#10b98126;border:1px solid #10b9814d}.table-container{border-radius:var(--radius-lg);border:1px solid var(--border);background:var(--bg-card);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);-webkit-overflow-scrolling:touch;width:100%;overflow-x:auto;box-shadow:inset -10px 0 10px -10px #0000000d}.table{border-collapse:collapse;width:100%}.table th,.table td{text-align:left;border-bottom:1px solid var(--border);padding:14px 16px}.table th{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.02em;font-size:.85rem;font-weight:600}.table tbody tr{transition:background var(--transition-fast)}.table tbody tr:hover{background:var(--overlay-light)}.text-gradient{background:linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.text-gradient-purple{background:linear-gradient(135deg, var(--accent-purple), #ec4899);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.spinner{border:2px solid #fff3;border-top-color:#fff;border-radius:50%;width:20px;height:20px;animation:.8s linear infinite spin;display:inline-block}.alert{border-radius:var(--radius-md);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:16px 20px;font-size:.95rem;font-weight:500;animation:.3s slideDown}.alert-error{color:#fca5a5;background:#ef44441a;border:1px solid #ef44444d}.alert-success{color:#6ee7b7;background:#10b9811a;border:1px solid #10b9814d}.empty-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;padding:80px 20px;display:flex}.empty-state-icon{opacity:.8;font-size:4rem;animation:6s ease-in-out infinite float}.empty-state-text{color:var(--text-secondary);font-size:1.1rem}.modal-overlay{-webkit-backdrop-filter:blur(8px);z-index:1000;background:#0009;justify-content:center;align-items:center;padding:24px;animation:.2s ease-out forwards fadeIn;display:flex;position:fixed;inset:0}.modal-card{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;flex-direction:column;width:100%;max-width:500px;max-height:90vh;animation:.3s cubic-bezier(.16,1,.3,1) forwards slideUpFade;display:flex;overflow:hidden;box-shadow:0 25px 50px -12px #00000080,inset 0 0 0 1px #ffffff0d}.modal-header{border-bottom:1px solid var(--border);background:#ffffff05;justify-content:space-between;align-items:center;padding:24px;display:flex}.modal-title{color:var(--text-primary);margin:0;font-size:1.25rem;font-weight:700}.modal-subtitle{color:var(--text-secondary);margin-top:4px;font-size:.9rem}.modal-close{color:var(--text-secondary);cursor:pointer;background:#ffffff0d;border:1px solid #ffffff1a;border-radius:50%;justify-content:center;align-items:center;width:32px;height:32px;transition:all .2s;display:flex}.modal-close:hover{color:#ef4444;background:#ef44441a;border-color:#ef444433}.modal-body{padding:24px;overflow-y:auto}@keyframes slideUpFade{0%{opacity:0;transform:translateY(20px)scale(.95)}to{opacity:1;transform:translateY(0)scale(1)}}.grid-cards{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;display:grid}@media (max-width:640px){.grid-cards{grid-template-columns:1fr}}.tabs{border-bottom:1px solid var(--border);scrollbar-width:none;gap:8px;margin-bottom:32px;padding-bottom:16px;display:flex;overflow-x:auto}.tabs::-webkit-scrollbar{display:none}.tab-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-md);transition:all var(--transition-fast);white-space:nowrap;background:0 0;border:none;padding:8px 16px;font-size:1rem;font-weight:500}.tab-btn:hover{color:var(--text-primary);background:#ffffff0d}.tab-btn.active{color:var(--text-primary);background:#8b5cf626;box-shadow:inset 0 0 0 1px #8b5cf64d}.auth-divider{text-align:center;color:var(--text-secondary);align-items:center;margin:24px 0;font-size:.85rem;font-weight:600;display:flex}.auth-divider:before,.auth-divider:after{content:"";border-bottom:1px solid var(--border);flex:1}.auth-divider span{padding:0 16px}.btn-google{color:#333;width:100%;font-family:var(--font-sans);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);background:#fff;border:1px solid #d1d5db;justify-content:center;align-items:center;gap:12px;padding:12px 28px;font-size:.95rem;font-weight:600;display:flex;box-shadow:0 2px 4px #0000000d}.btn-google:hover{background:#f9fafb;transform:translateY(-2px);box-shadow:0 4px 6px #0000001a}.btn-google svg{width:20px;height:20px}.login-page{justify-content:center;align-items:center;min-height:100vh;display:flex;position:relative;overflow:hidden}.login-bg{z-index:0;position:fixed;inset:0;overflow:hidden}.orb{filter:blur(80px);opacity:.4;border-radius:50%;animation:8s ease-in-out infinite float;position:absolute}.orb-1{background:radial-gradient(circle,#4f46e5,#0000 70%);width:400px;height:400px;animation-delay:0s;top:-10%;right:-5%}.orb-2{background:radial-gradient(circle,#7c3aed,#0000 70%);width:350px;height:350px;animation-delay:2s;bottom:-10%;left:-5%}.orb-3{background:radial-gradient(circle,#06b6d4,#0000 70%);width:250px;height:250px;animation-delay:4s;top:40%;left:50%}.login-container{z-index:1;width:100%;max-width:420px;padding:20px;animation:.6s forwards slideUp;position:relative}@media (max-width:480px){.login-container{padding:12px}.login-card{border-radius:var(--radius-lg);padding:24px 20px}.login-title{font-size:1.75rem}}.login-brand{text-align:center;margin-bottom:32px}.login-logo{filter:drop-shadow(0 0 24px #4f46e566);margin-bottom:16px;display:inline-flex}.login-title{background:linear-gradient(135deg, var(--text-primary), var(--accent-blue));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;margin-bottom:4px;font-size:2rem;font-weight:800}.login-subtitle{color:var(--text-secondary);font-size:.95rem}.login-card{background:var(--bg-card);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:32px}.login-btn{width:100%;margin-top:8px;padding:14px;font-size:1rem}.forgot-password-btn{color:var(--accent-cyan);cursor:pointer;background:0 0;border:none;padding:0;font-size:.8rem;font-weight:500;transition:color .2s}.forgot-password-btn:hover{color:var(--accent-blue);text-decoration:underline}.toggle-password-btn{color:var(--text-secondary);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:4px;transition:color .2s;display:flex;position:absolute;top:50%;right:12px;transform:translateY(-50%)}.toggle-password-btn:hover{color:var(--text-primary)}.signup-prompt{text-align:center;color:var(--text-secondary);margin-top:24px;font-size:.875rem}.signup-link{color:var(--accent-cyan);font-weight:600;text-decoration:none;transition:color .2s}.signup-link:hover{color:var(--accent-blue)}.login-footer{text-align:center;color:var(--text-secondary);opacity:.7;margin-top:24px;font-size:.8rem}.login-footer strong{color:var(--text-primary)}.pr-10{padding-right:2.5rem}.relative{position:relative}.fade-in{animation:1s ease-in forwards fadeIn}.hidden{display:none!important}