*{-webkit-box-sizing:border-box;-moz-box-sizing:border-box;box-sizing:border-box;margin:0;padding:0}a{text-decoration:none}a:hover{text-decoration:none}body{background:linear-gradient(135deg,#f8f9fa,#e9ecef);background:-webkit-linear-gradient(135deg,#f8f9fa,#e9ecef);background:-moz-linear-gradient(135deg,#f8f9fa 0,#e9ecef 100%);color:#2c3e50;font-family:PingFang SC,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;line-height:1.6;min-height:100vh;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;position:relative}.form-container{flex:1;min-width:300px;}body:before{background:radial-gradient(circle at 20% 80%,rgba(102,126,234,.08) 0,transparent 50%),radial-gradient(circle at 80% 20%,rgba(118,75,162,.05) 0,transparent 50%);content:"";height:100%;left:0;pointer-events:none;position:fixed;top:0;width:100%;z-index:-1}.container{margin:0 auto;max-width:1200px;padding:0 20px;width:100%}.main-header{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:0 0 25px 25px;box-shadow:0 10px 40px rgba(102,126,234,.2);margin-bottom:-50px;overflow:hidden;padding:80px 0 100px;position:relative;text-align:center}.main-header:before{animation:float 20s linear infinite;background:radial-gradient(circle at 30% 30%,hsla(0,0%,100%,.1) 2%,transparent 20%),radial-gradient(circle at 70% 70%,hsla(0,0%,100%,.1) 2%,transparent 20%);bottom:0;content:"";left:0;position:absolute;right:0;top:0}@keyframes float{0%{transform:translate(0) rotate(0)}25%{transform:translate(10px,10px) rotate(90deg)}50%{transform:translateY(20px) rotate(180deg)}75%{transform:translate(-10px,10px) rotate(270deg)}to{transform:translate(0) rotate(360deg)}}.logo{color:#fff;display:inline-block;font-size:4rem;font-weight:800;letter-spacing:3px;margin-bottom:20px;position:relative;text-shadow:0 4px 30px rgba(0,0,0,.3)}.logo:after{animation:sparkle 2s infinite;content:"✨";font-size:2rem;position:absolute;right:-30px;top:-10px}@keyframes sparkle{0%,to{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.2)}}.tagline{color:hsla(0,0%,100%,.95);font-size:1.3rem;font-weight:300;line-height:1.8;margin:0 auto 40px;max-width:700px;text-shadow:0 2px 10px rgba(0,0,0,.2)}.main-content{position:relative;z-index:10}.content-wrapper{display:flex;flex-wrap:wrap;gap:30px;margin:0 -15px}.card{backdrop-filter:blur(10px);background:hsla(0,0%,100%,.95);border:1px solid hsla(0,0%,100%,.2);border-radius:20px;box-shadow:0 20px 60px rgba(0,0,0,.1),0 0 0 1px hsla(0,0%,100%,.1);height:100%;padding:50px 50px 60px;transition:all .4s cubic-bezier(.4,0,.2,1)}.card:hover{box-shadow:0 30px 80px rgba(0,0,0,.15),0 0 0 1px hsla(0,0%,100%,.2)}.card-header{margin-bottom:40px;position:relative;text-align:center}.card-header:after{background:linear-gradient(90deg,#667eea,#764ba2);border-radius:2px;bottom:-15px;content:"";height:3px;left:50%;position:absolute;transform:translateX(-50%);width:60px}.card-title{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;color:#2c3e50;font-size:2.2rem;font-weight:700;margin-bottom:15px;-webkit-text-fill-color:transparent;background-clip:text}.card-subtitle{color:#7f8c8d;font-size:1.1rem;font-weight:400;padding-bottom:15px}.form-group{margin-bottom:35px;position:relative}.form-label{align-items:center;color:#34495e;display:block;display:flex;font-size:1rem;font-weight:600;gap:8px;margin-bottom:12px}.form-label:before{content:"📝";font-size:1.1rem}.form-control{background:hsla(0,0%,100%,.9);border:2px solid rgba(102,126,234,.2);border-radius:15px;box-shadow:inset 0 2px 10px rgba(0,0,0,.05);color:#495057;font-size:1.1rem;line-height:1.6;padding:18px 25px;width:100%}.form-control:focus{border-color:#667eea;box-shadow:0 0 0 4px rgba(102,126,234,.1),inset 0 2px 10px rgba(0,0,0,.05);outline:0}.select-wrapper{position:relative}.select-wrapper:after{color:#667eea;content:"▼";font-size:1rem;pointer-events:none;position:absolute;right:2px;top:53%;transform:translateY(-50%);transition:transform .3s ease}select.form-control:focus+.select-wrapper:after{transform:translateY(-50%) rotate(180deg)}.btn{align-items:center;border:none;border-radius:15px;cursor:pointer;display:inline-flex;font-size:1.2rem;font-weight:700;gap:12px;justify-content:center;line-height:1.5;overflow:hidden;padding:20px 40px;position:relative;text-align:center;transition:all .4s cubic-bezier(.4,0,.2,1);user-select:none;vertical-align:middle;white-space:nowrap;width:100%}.btn:before{background:hsla(0,0%,100%,.2);border-radius:50%;content:"";height:0;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);transition:width .6s,height .6s;width:0}.btn:hover:before{height:300px;width:300px}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 10px 30px rgba(102,126,234,.4);color:#fff}.btn-primary:hover{background:linear-gradient(135deg,#5a6fd8,#6a4090);box-shadow:0 20px 40px rgba(102,126,234,.6);transform:translateY(-5px) scale(1.05)}.btn-primary:active{transform:translateY(-2px) scale(1.02)}.btn span,.btn:after{position:relative;z-index:1}.btn:after{animation:pulse 2s infinite;content:"🔮";font-size:1.3rem}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.2)}}.history-container{flex:1;min-width:300px}.history-header{border-bottom:2px solid rgba(102,126,234,.1);justify-content:space-between;margin-bottom:30px;padding-bottom:20px}.history-header,.section-title{align-items:center;display:flex}.section-title{color:#2c3e50;font-size:1.8rem;font-weight:700;gap:10px}.section-title:before{font-size:1.5rem}.refresh-btn{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:10px;box-shadow:0 5px 20px rgba(102,126,234,.3);color:#fff;cursor:pointer;display:flex;font-size:1rem;font-weight:600;gap:8px;padding:12px 24px;transition:all .3s ease}.refresh-btn:hover{box-shadow:0 10px 30px rgba(102,126,234,.5);transform:translateY(-3px) rotate(15deg)}.history-list{max-height:500px;overflow-y:auto;padding-right:10px}.history-list::-webkit-scrollbar{width:6px}.history-list::-webkit-scrollbar-track{background:rgba(102,126,234,.1);border-radius:10px}.history-list::-webkit-scrollbar-thumb{background:linear-gradient(135deg,#667eea,#764ba2);border-radius:10px}.history-item{background:linear-gradient(135deg,rgba(102,126,234,.05),rgba(118,75,162,.05));border-left:5px solid #667eea;border-radius:15px;margin-bottom:20px;overflow:hidden;padding:25px;position:relative;transition:all .3s ease}.history-item:before{background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.2),transparent);content:"";height:100%;left:-100%;position:absolute;top:0;transition:left .6s;width:100%}.history-item:hover:before{left:100%}.history-item:hover{background:linear-gradient(135deg,rgba(102,126,234,.1),rgba(118,75,162,.1));box-shadow:0 15px 40px rgba(102,126,234,.15);transform:translateX(10px)}.history-title{color:#2c3e50;display:block;font-size:1.2rem;font-weight:700;margin-bottom:12px;position:relative;text-decoration:none;transition:color .3s ease;z-index:1}.history-title:hover{color:#667eea}.history-meta{color:#7f8c8d;display:flex;flex-wrap:wrap;font-size:.9rem;gap:20px;position:relative;z-index:1}.history-meta span{align-items:center;display:inline-flex;gap:5px}.history-meta i{font-style:normal;opacity:.8}.no-history{color:#95a5a6;font-size:1.1rem;padding:80px 20px;text-align:center}.no-history:before{animation:float 3s ease-in-out infinite;content:"💭";display:block;font-size:4rem;margin-bottom:20px;opacity:.7}.stats-section{margin-top:40px}.char-count{padding-top:8px;text-align:center}.stats-grid{display:grid;gap:30px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.stat-card{backdrop-filter:blur(10px);background:linear-gradient(135deg,hsla(0,0%,100%,.95),hsla(0,0%,100%,.8));border:1px solid hsla(0,0%,100%,.3);border-radius:20px;box-shadow:0 15px 50px rgba(0,0,0,.08),0 0 0 1px hsla(0,0%,100%,.2);overflow:hidden;padding:40px 30px;position:relative;text-align:center}.stat-card:before{background:linear-gradient(90deg,#667eea,#764ba2);content:"";height:5px;left:0;position:absolute;right:0;top:0}.stat-card:hover{box-shadow:0 25px 60px rgba(0,0,0,.12),0 0 0 1px hsla(0,0%,100%,.3)}.stat-number{background:linear-gradient(135deg,#667eea,#764ba2);-webkit-background-clip:text;font-size:3.5rem;font-weight:800;-webkit-text-fill-color:transparent;background-clip:text;line-height:1;margin-bottom:15px}.stat-label{color:#7f8c8d;font-size:1rem;font-weight:500;letter-spacing:1px}.main-footer{background:linear-gradient(135deg,#2c3e50,#34495e);border-radius:30px 30px 0 0;color:#fff;margin-top:40px;overflow:hidden;padding:60px 0 40px;position:relative}.main-footer:before{background:linear-gradient(90deg,#667eea,#764ba2);content:"";height:5px;left:0;position:absolute;right:0;top:0}.footer-content{position:relative;text-align:center;z-index:1}.footer-links{display:flex;flex-wrap:wrap;gap:30px;justify-content:center;margin-bottom:30px}.footer-link{color:hsla(0,0%,100%,.8);font-size:1rem;font-weight:500;padding:5px 0;position:relative;text-decoration:none;transition:all .3s ease}.footer-link:after{background:#667eea;bottom:0;content:"";height:2px;left:0;position:absolute;transition:width .3s ease;width:0}.footer-link:hover{color:#fff}.footer-link:hover:after{width:100%}.copyright{color:hsla(0,0%,100%,.6);font-size:.9rem;line-height:1.6;margin-top:20px}@media (max-width:768px){.logo{font-size:2.8rem}.main-header{margin-bottom:-30px;padding:60px 0 80px}.card{padding:30px}.card-title{font-size:1.8rem}.content-wrapper{gap:20px;margin:0}.history-header{align-items:flex-start;flex-direction:column;gap:20px}.stats-grid{gap:20px;grid-template-columns:1fr}.stat-number{font-size:2.8rem}.footer-links{flex-direction:column;gap:15px}}@media (max-width:480px){.container{padding:0 15px}.logo{font-size:2.2rem}.tagline{font-size:1.1rem}.card{padding:25px 20px}.btn{font-size:1.1rem;padding:18px 25px}}.loading{animation:spin 1s ease-in-out infinite;border:3px solid rgba(102,126,234,.3);border-radius:50%;border-top-color:#667eea;display:inline-block;height:20px;width:20px}@keyframes spin{to{transform:rotate(360deg)}}.success-message{align-items:center;background:linear-gradient(135deg,#4caf50,#45a049);border-radius:10px;box-shadow:0 10px 30px rgba(76,175,80,.3);color:#fff;display:flex;gap:10px;padding:15px 25px;position:fixed;right:20px;top:20px;transform:translateX(150%);transition:transform .4s ease;z-index:1000}.success-message.show{transform:translateX(0)}.theme-toggle{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;bottom:30px;box-shadow:0 10px 30px rgba(102,126,234,.4);cursor:pointer;display:flex;height:60px;justify-content:center;position:fixed;right:30px;transition:all .3s ease;width:60px;z-index:100}.theme-toggle:hover{box-shadow:0 15px 40px rgba(102,126,234,.6);transform:scale(1.1) rotate(180deg)}.theme-toggle:before{content:"🌙";font-size:1.8rem}.theme-toggle.dark:before{content:"☀️"}.form-control:invalid:focus{border-color:#f39c12;box-shadow:0 0 0 4px rgba(243,156,18,.1),inset 0 2px 10px rgba(0,0,0,.05)}select.form-control:invalid{box-shadow:none}select.form-control:invalid:focus{box-shadow:0 0 0 4px rgba(243,156,18,.1),inset 0 2px 10px rgba(0,0,0,.05)}.char-count.error{color:#e74c3c;font-weight:600}