@import"https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--bg-color: #020716;--text-primary: #ffffff;--accent-color: #f9b707;--panel-bg: #050c2163;--panel-bg-hover: #0a1738;--border-color: #f9b70770;--gradient-btn: linear-gradient(45deg, #ffffff 0%, #f9b707 15%, #f9b707 85%, #ffffff 100%);--sidebar-width: 250px}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:Inter,sans-serif;background-color:var(--bg-color);color:var(--text-primary);font-size:16px}::-webkit-scrollbar{width:8px;height:8px;background:var(--bg-color)}::-webkit-scrollbar-track{box-shadow:inset 0 0 5px #000;border-radius:4px}::-webkit-scrollbar-thumb{background:#e99028;border-radius:4px}a{color:inherit;text-decoration:none}button{cursor:pointer;border:none;background:none;font-family:inherit}.btn-primary{background:var(--gradient-btn);background-size:300% 100%;color:#000;padding:10px 20px;border-radius:8px;font-weight:600;transition:all .3s ease}.btn-primary:hover{background-size:100% 600%;transform:translateY(-2px)}.btn-outline{border:1px solid var(--accent-color);color:var(--accent-color);padding:8px 16px;border-radius:8px;transition:all .3s ease}.btn-outline:hover{background:var(--accent-color);color:#000}.app-container{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--panel-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-right:1px solid var(--border-color);padding:20px 0;display:flex;flex-direction:column;position:fixed;height:100vh}.sidebar h2{color:var(--accent-color);padding:0 20px 20px;font-size:24px}.nav-links{list-style:none;display:flex;flex-direction:column}.nav-links li a{display:block;padding:15px 20px;color:var(--text-primary);transition:all .2s;border-left:3px solid transparent}.nav-links li a:hover,.nav-links li a.active{background:var(--panel-bg-hover);color:var(--accent-color);border-left-color:var(--accent-color)}.logout-btn{margin-top:auto;padding:15px 20px;text-align:left;color:var(--text-primary);width:100%;transition:all .2s}.logout-btn:hover{color:var(--accent-color);background:var(--panel-bg-hover)}.main-content{flex:1;margin-left:var(--sidebar-width);display:flex;flex-direction:column}.header{display:flex;justify-content:space-between;align-items:center;padding:20px 30px;background:#020716cc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:10}.user-info{display:flex;align-items:center;gap:15px}.avatar{width:40px;height:40px;background:var(--accent-color);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#000;font-weight:700}.wallet-balance{background:var(--panel-bg);padding:10px 20px;border-radius:20px;border:1px solid var(--border-color);font-weight:500}.page-container{padding:30px}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.section-title{color:var(--text-primary);font-size:24px}.search-input{background:transparent;border:1px solid var(--border-color);color:var(--text-primary);padding:10px 15px;border-radius:8px;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);width:250px}.search-input:focus{outline:none;border-color:var(--accent-color)}.course-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:25px;margin-bottom:40px}.course-card{background:#3b82f6;border-radius:12px;overflow:hidden;display:flex;flex-direction:column;transition:transform .3s ease,box-shadow .3s ease;cursor:pointer;height:250px}.course-card:hover{transform:translateY(-5px);box-shadow:0 10px 20px #00000080}.course-card-content{flex:1;display:flex;align-items:center;justify-content:center;padding:20px}.course-card-title{font-size:22px;font-weight:700;text-align:center}.course-card-footer{background:var(--text-primary);color:#000;padding:15px;text-align:center;font-weight:600}.course-details-container{display:flex;gap:40px;background:var(--panel-bg);padding:40px;border-radius:16px;border:1px solid var(--border-color);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.course-images{display:flex;flex-direction:column;gap:20px;width:300px}.polygon-placeholder{width:100%;aspect-ratio:1;background:#3b82f6;clip-path:polygon(50% 0%,90% 20%,100% 60%,75% 100%,25% 100%,0% 60%,10% 20%);display:flex;align-items:center;justify-content:center}.course-info{flex:1}.course-price-row{display:flex;justify-content:space-between;align-items:center;margin:20px 0 30px}.course-price{font-size:20px;font-weight:600;color:var(--accent-color)}.course-description{line-height:1.6;color:#ccc}.transactions-table{width:100%;border-collapse:collapse;background:var(--panel-bg);border-radius:12px;overflow:hidden}.transactions-table th,.transactions-table td{padding:15px 20px;text-align:left;border-bottom:1px solid rgba(255,255,255,.1)}.transactions-table th{background:#ffffff0d;font-weight:600;color:var(--accent-color)}.transactions-table tr:hover{background:#ffffff05}.auth-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background-color:var(--bg-color);padding:20px}.auth-card{background:var(--panel-bg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--border-color);border-radius:16px;padding:40px;width:100%;max-width:400px;box-shadow:0 10px 30px #00000080}.auth-card h2{color:var(--accent-color);text-align:center;margin-bottom:30px;font-size:28px}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:8px;color:var(--text-primary);font-weight:500}.form-group input{width:100%;padding:12px 15px;background:#0003;border:1px solid rgba(255,255,255,.1);border-radius:8px;color:var(--text-primary);transition:all .3s ease}.form-group input:focus{outline:none;border-color:var(--accent-color);background:#0006}.auth-btn{width:100%;margin-top:10px;padding:12px;font-size:16px}.auth-footer{text-align:center;margin-top:20px;color:#aaa}.auth-footer a{color:var(--accent-color);font-weight:600}.auth-footer a:hover{text-decoration:underline}.error-msg{color:#ef4444;background:#ef44441a;padding:10px;border-radius:8px;margin-bottom:15px;font-size:14px;text-align:center}