@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--primary-color: #16a34a;--primary-hover: #15803d;--secondary-color: #84cc16;--bg-color: #f1f5f9;--text-primary: #0f172a;--text-secondary: #475569;--card-bg: rgba(255, 255, 255, .75);--header-bg: rgba(255, 255, 255, .85);--border-color: rgba(255, 255, 255, .5);--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, .05), 0 2px 4px -1px rgba(0, 0, 0, .03);--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, .05), 0 4px 6px -2px rgba(0, 0, 0, .03);--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04)}body{margin:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--bg-color);background-image:radial-gradient(at 10% 10%,rgba(22,163,74,.15) 0px,transparent 50%),radial-gradient(at 90% 90%,rgba(132,204,22,.15) 0px,transparent 50%);background-attachment:fixed;color:var(--text-primary);line-height:1.6}h1,h2,h3,h4,h5,h6{font-weight:700;color:var(--text-primary);margin-top:0}.app-container{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;justify-content:space-between;align-items:center;padding:1.25rem 3rem;background-color:var(--header-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.app-header h1{font-size:1.75rem;margin:0;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.app-header nav{display:flex;align-items:center;gap:2rem}.app-header nav a{text-decoration:none;color:var(--text-secondary);font-weight:600;font-size:1rem;transition:all .2s ease;position:relative}.app-header nav a:hover{color:var(--primary-color)}.app-header nav a:after{content:"";position:absolute;width:0;height:2px;bottom:-4px;left:0;background-color:var(--primary-color);transition:width .3s ease}.app-header nav a:hover:after{width:100%}.btn-link-nav{background:none;border:none;color:var(--text-secondary);font-family:inherit;font-weight:600;font-size:1rem;cursor:pointer;transition:color .2s ease;padding:0}.btn-link-nav:hover{color:var(--secondary-color)}.app-main{flex:1;padding:3rem 2rem;max-width:1200px;margin:0 auto;width:100%;box-sizing:border-box}.form-group{margin-bottom:1.5rem}.form-group label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-secondary);font-size:.95rem}.form-group input[type=text],.form-group input[type=password],.form-group input[type=email],.form-group input[type=number],.form-group select,textarea{width:100%;padding:.85rem 1rem;border:1px solid #cbd5e1;border-radius:12px;background:#ffffffe6;font-family:inherit;font-size:1rem;color:var(--text-primary);transition:all .2s ease;box-sizing:border-box}.form-group input:focus,textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #16a34a33}.btn-primary{display:inline-block;padding:.85rem 1.5rem;border:none;border-radius:12px;background:linear-gradient(135deg,var(--primary-color),var(--primary-hover));color:#fff;font-size:1.05rem;font-weight:600;text-align:center;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease;box-shadow:0 4px 14px #16a34a63;text-decoration:none}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px #16a34a80;color:#fff}.btn-secondary{display:inline-block;padding:.85rem 1.5rem;border:1px solid var(--primary-color);border-radius:12px;background:#ffffff80;color:var(--primary-color);font-size:1.05rem;font-weight:600;text-align:center;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn-secondary:hover{background:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 4px 14px #16a34a4d}.btn-link{background:none;border:none;color:var(--primary-color);font-weight:600;cursor:pointer;padding:0;font-size:.95rem;transition:color .2s ease}.btn-link:hover{color:var(--primary-hover);text-decoration:underline}.auth-container{max-width:420px;margin:4rem auto;padding:3rem;background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:24px;box-shadow:var(--shadow-lg)}.auth-container h2{text-align:center;font-size:2rem;margin-bottom:2rem}.course-view-container{background:var(--card-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-color);border-radius:24px;padding:2.5rem;box-shadow:var(--shadow-md);margin-bottom:2rem}.home-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2.5rem}.home-header h2{font-size:2rem}.course-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:2rem}.course-card{background:#ffffffb3;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.8);border-radius:16px;padding:2rem;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:var(--shadow-sm);height:100%;box-sizing:border-box;display:flex;flex-direction:column}.course-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);background:#fffffff2;border-color:#16a34a66}.course-card h3{font-size:1.4rem;margin-top:0;margin-bottom:.75rem;background:linear-gradient(90deg,var(--text-primary),var(--primary-color));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}.course-card p{color:var(--text-secondary);font-size:1.05rem;margin-bottom:1.5rem;flex:1}.course-card small{display:inline-block;color:var(--primary-color);font-weight:600;padding:.35rem .85rem;background:#16a34a1a;border-radius:20px;font-size:.85rem}.content-area table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem}.content-area th,.content-area td{padding:.65rem 1rem;border:1px solid #cbd5e1;text-align:left;vertical-align:top}.content-area th{background:#16a34a14;font-weight:600;color:var(--text-primary)}.content-area tr:nth-child(2n) td{background:#f1f5f999}.text-center{text-align:center}.mt-2{margin-top:1rem}.mb-2{margin-bottom:1rem}.flex{display:flex}.gap-2{gap:1rem}.mobile-nav-toggle{display:none}.hamburger-btn{display:none;background:none;border:none;cursor:pointer;padding:.4rem;color:var(--text-secondary);font-size:1.4rem;line-height:1;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;transition:background .2s,color .2s;flex-shrink:0}.hamburger-btn:hover{background:#16a34a14;color:var(--primary-color)}.course-view-layout{display:flex;gap:2rem}.course-sidebar{width:280px;min-width:280px;align-self:flex-start;position:sticky;top:5rem}.course-item-row{display:flex;align-items:center;gap:.75rem}.course-item-row .course-item-title{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-item-row .course-item-actions{flex-shrink:0}.course-card{position:relative;overflow:hidden}.course-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));opacity:0;transition:opacity .3s ease}.course-card:hover:before{opacity:1}.content-area table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}@media (max-width: 768px){.hamburger-btn{display:flex}.app-header{padding:.875rem 1.25rem}.app-header nav{display:none}.app-header nav.menu-open{display:flex;flex-direction:column;align-items:stretch;gap:.25rem;position:absolute;top:100%;left:0;right:0;background:#fffffff7;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding:.75rem 1.25rem 1.5rem;border-bottom:1px solid rgba(22,163,74,.15);box-shadow:0 8px 32px #0000001a;z-index:200}.app-header nav.menu-open a,.app-header nav.menu-open .btn-link-nav{font-size:1.05rem;padding:.75rem 1rem;border-radius:10px;text-align:left;width:100%;box-sizing:border-box;display:block;color:var(--text-primary)}.app-header nav.menu-open a:hover,.app-header nav.menu-open .btn-link-nav:hover{background:#16a34a0f;color:var(--primary-color)}.app-header nav.menu-open a:after{display:none}.app-main{padding:1.25rem .75rem}.home-header{flex-direction:column;align-items:flex-start;gap:1rem;margin-bottom:1.5rem}.home-header h2{font-size:1.5rem}.course-list{grid-template-columns:1fr;gap:1.25rem}.course-view-container{padding:1.25rem 1rem;border-radius:16px}.course-view-layout{flex-direction:column;gap:1rem}.course-sidebar{width:100%;min-width:unset;position:static;top:auto;display:none;box-sizing:border-box}.course-sidebar.mobile-open{display:block}.course-view-layout .course-sidebar.mobile-open~.course-view-container{display:none}.mobile-nav-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:.75rem 1rem;background:#16a34a0f;border:1px solid rgba(22,163,74,.2);border-radius:10px;cursor:pointer;font-family:inherit;font-size:.95rem;box-sizing:border-box;transition:background .2s;text-align:left}.mobile-nav-toggle:hover{background:#16a34a1a}.course-item-row{display:block}.course-item-row .course-item-title{display:block;margin-bottom:.3rem;overflow:visible;white-space:normal;text-overflow:clip}.auth-container{margin:1.5rem 1rem;padding:1.75rem 1.25rem;border-radius:16px}.auth-container h2{font-size:1.5rem;margin-bottom:1.5rem}}@media (max-width: 480px){.app-header h1{font-size:1.4rem}.auth-container{margin:1rem;padding:1.5rem 1rem}.btn-primary,.btn-secondary{font-size:1rem;padding:.75rem 1.25rem}}