:root{--primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);--secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);--white-transparent: rgba(255, 255, 255, .95);--white-light: rgba(255, 255, 255, .1);--border-color: #e0e7ff;--primary-color: #667eea;--secondary-color: #764ba2;--text-dark: #2d3748;--text-medium: #4a5568;--text-light: #718096;--bg-light: #f8f9fa;--white: #fff;--border-radius: 24px;--border-radius-sm: 16px;--border-radius-xs: 12px;--shadow-lg: 0 20px 60px rgba(0, 0, 0, .3);--shadow-md: 0 20px 60px rgba(0, 0, 0, .2);--shadow-sm: 0 8px 20px rgba(102, 126, 234, .2);--transition: all .3s cubic-bezier(.4, 0, .2, 1)}@keyframes float{0%,to{transform:translate(0) rotate(0)}33%{transform:translate(30px,-30px) rotate(120deg)}66%{transform:translate(-20px,20px) rotate(240deg)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}@keyframes pulse{0%,to{transform:translate(-50%,-50%) scale(1);opacity:.5}50%{transform:translate(-50%,-50%) scale(1.1);opacity:.8}}*{margin:0;padding:0;box-sizing:border-box;font-family:Inter,system-ui,-apple-system,sans-serif}body{background:var(--primary-gradient);min-height:100vh;padding:40px 20px;position:relative;overflow-x:hidden}body:before{content:"";position:fixed;width:400px;height:400px;background:var(--white-light);border-radius:50%;top:-200px;right:-200px;animation:float 20s ease-in-out infinite}body:after{content:"";position:fixed;width:300px;height:300px;background:#ffffff0d;border-radius:50%;bottom:-150px;left:-150px;animation:float 15s ease-in-out infinite reverse}nav{background:var(--white-transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 32px #0000001a;position:sticky;top:0;z-index:1000;animation:fadeInDown .6s ease-out;margin-bottom:20px}nav>div{max-width:1400px;margin:0 auto;padding:16px 40px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}nav a{font-size:16px;font-weight:600;padding:12px 24px;border-radius:var(--border-radius-sm);text-decoration:none;color:var(--text-medium);border:2px solid var(--border-color);background:var(--white);transition:var(--transition);display:inline-block}nav a:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}nav a:active{transform:translateY(0)}nav a.active{background:var(--primary-gradient);color:var(--white);border-color:transparent;box-shadow:0 8px 20px #667eea4d}@media(max-width:768px){nav>div{padding:12px 20px;flex-direction:column;align-items:stretch;text-align:center}nav a{width:100%;text-align:center}}.nav-brand{display:flex;align-items:center}.nav-brand-text{font-size:24px;font-weight:700;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.nav-links{display:flex;gap:12px;flex-wrap:wrap}@media(max-width:768px){.nav-links{flex-direction:column;width:100%}}form{background:var(--white-transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--border-radius);padding:40px;box-shadow:var(--shadow-lg);margin:20px 100px;animation:fadeInUp .8s ease-out .2s both}form>input,form>select,form>button{font-size:16px;padding:16px 24px;margin:8px 12px;border:2px solid var(--border-color);border-radius:var(--border-radius-sm);outline:none;background:var(--white);color:var(--text-medium);font-weight:500;transition:var(--transition);cursor:pointer}:is(form>input,form>select,form>button):hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}:is(form>input,form>select):hover{background:var(--white);color:var(--text-medium);border-color:var(--primary-color)}:is(form>input,form>select):focus{border-color:var(--primary-color);box-shadow:0 0 0 4px #667eea1a;background:var(--white)}form>button{background:var(--primary-gradient);color:var(--white);border:none;font-weight:600;position:relative;overflow:hidden}form>button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}form>button:hover:before{left:100%}form>button:hover{transform:translateY(-2px);box-shadow:0 12px 28px #667eea66}form>button:active{transform:translateY(0)}@media(max-width:768px){form{margin:20px;padding:24px}}ul{max-height:400px;overflow-y:auto;padding-right:8px}ul::-webkit-scrollbar{width:8px}ul::-webkit-scrollbar-track{background:#f1f5f9;border-radius:10px}ul::-webkit-scrollbar-thumb{background:var(--primary-gradient);border-radius:10px}li{list-style:none;animation:slideInLeft .4s ease-out both;animation-delay:calc(var(--index) * .05s);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px;margin:8px 0;background:var(--white);border-radius:var(--border-radius-sm);border:2px solid var(--border-color);transition:var(--transition)}li:hover{transform:translate(5px);box-shadow:0 8px 20px #667eea26}li button{font-size:14px;padding:10px 20px;margin:0;border:2px solid var(--border-color);border-radius:var(--border-radius-xs);outline:none;background:var(--white);color:var(--text-medium);font-weight:500;transition:var(--transition);cursor:pointer;white-space:nowrap}li button:hover{background:var(--secondary-gradient);color:var(--white);border-color:#f5576c;transform:translateY(-2px);box-shadow:0 6px 16px #f5576c4d}li button:active{transform:translateY(0)}@media(max-width:768px){li{flex-direction:column;align-items:flex-start}}.button-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center;justify-content:flex-end}.button-row button{flex:0 1 auto;min-width:100px;font-size:13px;padding:8px 16px}@media(max-width:768px){.button-row{width:100%;justify-content:stretch}.button-row button{flex:1;min-width:0}}.student-section{display:flex;justify-content:space-around;gap:24px;margin:20px 12px;flex-wrap:wrap;animation:fadeInUp 1s ease-out .4s both}.student-section>div{flex:1;min-width:300px;background:var(--white-transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:none;border-radius:var(--border-radius);padding:32px;box-shadow:var(--shadow-md);transition:all .4s cubic-bezier(.4,0,.2,1)}.student-section>div:hover{transform:translateY(-8px);box-shadow:0 28px 70px #0000004d}.student-section>div h2{margin-bottom:20px;color:var(--primary-color);font-size:24px;font-weight:700}@media(max-width:768px){.student-section{flex-direction:column}.student-section>div{min-width:100%}}.counter-container{background:var(--white-transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--border-radius);padding:32px 24px;max-width:400px;margin:40px auto;text-align:center;box-shadow:var(--shadow-md);animation:fadeInUp .8s ease-out .2s both}.counter-container h2{color:var(--primary-color);font-size:26px;margin-bottom:20px}.counter-container p{font-size:20px;color:var(--text-medium);margin-bottom:24px}.counter-container button{font-size:16px;padding:12px 24px;margin:6px 12px;border:none;border-radius:var(--border-radius-sm);background:var(--primary-gradient);color:var(--white);font-weight:600;cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.counter-container button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}.counter-container button:hover:before{left:100%}.counter-container button:hover{transform:translateY(-2px);box-shadow:0 12px 28px #667eea66}.counter-container button:active{transform:translateY(0)}.users-container,.user-details-container{max-width:1400px;margin:0 auto;padding:20px;animation:fadeInUp .8s ease-out}.user-details-container{max-width:900px}.users-title{text-align:center;color:var(--white);font-size:42px;font-weight:700;margin-bottom:40px;text-shadow:0 4px 12px rgba(0,0,0,.2);animation:fadeInDown .6s ease-out}@media(max-width:768px){.users-title{font-size:32px;margin-bottom:24px}}.users-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;margin-top:20px}@media(max-width:768px){.users-grid{grid-template-columns:1fr;gap:20px}}.user-card,.user-details-card,.notfound-content{background:var(--white-transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:var(--border-radius);padding:32px 24px;box-shadow:var(--shadow-md);transition:all .4s cubic-bezier(.4,0,.2,1)}.user-card{animation:slideInLeft .4s ease-out both;animation-delay:calc(var(--index) * .05s)}.user-card:hover{transform:translateY(-8px);box-shadow:0 28px 70px #0000004d}.user-details-card{padding:40px;box-shadow:var(--shadow-lg);animation:fadeInUp .6s ease-out .2s both}@media(max-width:768px){.user-details-card{padding:24px}}.notfound-content{text-align:center;max-width:600px;padding:60px 40px;box-shadow:var(--shadow-lg)}@media(max-width:768px){.notfound-content{padding:40px 24px}}.user-avatar-container{text-align:center;margin-bottom:20px}.user-avatar,.user-details-avatar{border-radius:50%;margin-bottom:16px;border:4px solid var(--primary-color);box-shadow:0 8px 24px #667eea4d}.user-avatar{width:120px;height:120px}.user-details-avatar{width:150px;height:150px;border-width:5px;margin-bottom:20px;box-shadow:0 12px 32px #667eea4d}.user-name,.user-details-name{margin:12px 0 8px;color:var(--text-dark);font-weight:700}.user-name{font-size:20px}.user-details-name{font-size:32px;margin:16px 0 8px}@media(max-width:768px){.user-details-name{font-size:26px}}.user-username,.user-details-username{margin:0;color:var(--text-light);font-weight:500}.user-username{font-size:15px}.user-details-username{font-size:18px}.details-button,.back-button,.back-button-top,.notfound-button{padding:14px 32px;border:none;border-radius:var(--border-radius-sm);font-size:16px;font-weight:600;cursor:pointer;transition:var(--transition);position:relative;overflow:hidden}:is(.details-button,.back-button,.back-button-top,.notfound-button):before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);transition:left .5s}:is(.details-button,.back-button,.back-button-top,.notfound-button):hover:before{left:100%}:is(.details-button,.back-button,.back-button-top,.notfound-button):active{transform:translateY(0)}.details-button,.back-button,.notfound-button.primary{background:var(--primary-gradient);color:var(--white)}:is(.details-button,.back-button,.notfound-button.primary):hover{transform:translateY(-2px);box-shadow:0 12px 28px #667eea66}.details-button{width:100%;padding:14px}.back-button{padding:12px 32px;box-shadow:0 8px 20px #667eea4d}.back-button-top{margin-bottom:24px;padding:12px 24px;background:#ffffffe6;color:var(--text-medium);border:2px solid var(--border-color);font-size:15px}.back-button-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm);background:var(--white)}.notfound-button.secondary{background:var(--white);color:var(--primary-color);border:2px solid var(--primary-color)}.notfound-button.secondary:hover{background:var(--primary-color);color:var(--white);transform:translateY(-2px);box-shadow:0 8px 20px #667eea4d}.user-details-header{text-align:center;margin-bottom:40px;padding-bottom:30px;border-bottom:2px solid var(--border-color)}.user-details-content{margin-top:32px}.detail-section{margin-bottom:32px}.section-title{font-size:22px;color:var(--primary-color);margin-bottom:20px;padding-bottom:12px;border-bottom:3px solid var(--primary-color);font-weight:700}.detail-item{display:flex;padding:14px 18px;margin-bottom:12px;background:var(--bg-light);border-radius:var(--border-radius-xs);border:2px solid var(--border-color);transition:all .3s ease}.detail-item:hover{background:var(--white);border-color:var(--primary-color);transform:translate(5px)}.detail-item strong{min-width:160px;color:var(--text-medium);font-size:15px;font-weight:600}.detail-item span{color:var(--text-dark);font-size:15px;flex:1}@media(max-width:768px){.detail-item{flex-direction:column;gap:8px}.detail-item strong{min-width:auto}}.loading-container{text-align:center;padding:60px 20px;animation:fadeInUp .6s ease-out}.loading-text,.error-text{font-size:20px;color:var(--white);font-weight:600;text-shadow:0 2px 8px rgba(0,0,0,.2)}.error-text{margin-bottom:20px}.notfound-container{min-height:80vh;display:flex;align-items:center;justify-content:center;padding:40px 20px;animation:fadeInUp .8s ease-out}.notfound-animation{position:relative;margin-bottom:30px}.notfound-title{font-size:120px;font-weight:900;background:var(--primary-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin:0;position:relative;z-index:2;animation:bounce 2s ease-in-out infinite}@media(max-width:768px){.notfound-title{font-size:80px}}.notfound-circle{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:200px;height:200px;background:linear-gradient(135deg,#667eea1a,#764ba21a);border-radius:50%;z-index:1;animation:pulse 2s ease-in-out infinite}.notfound-subtitle{font-size:32px;color:var(--text-dark);margin:20px 0;font-weight:700}@media(max-width:768px){.notfound-subtitle{font-size:24px}}.notfound-description{font-size:16px;color:var(--text-light);line-height:1.6;margin:20px 0 40px}@media(max-width:768px){.notfound-description{font-size:14px}}.notfound-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}@media(max-width:768px){.notfound-buttons{flex-direction:column;width:100%}.notfound-buttons .notfound-button{width:100%}}
