:root{--primary-contrast:#0b151e;--secondary-contrast:#0b151e99;--background-gradient:linear-gradient(90deg,#ffca28,#f57c00);--background:#ffca28;--muted:rgba(194,137,3,.3);--surface:#e99e1d;--border:transparent;--top-gradient:#ffffff33;--bottom-gradient-top:#ffffff75;--bottom-gradient-bottom:transparent;--button:#0b151e}.light-theme{--primary-contrast:#1a1a1a;--secondary-contrast:#666;--background-gradient:linear-gradient(180deg,#fff,#f8f9fa);--background:#fff;--muted:rgba(230,235,240,.6);--surface:#fff;--border:#e5e7eb;--top-gradient:#e3f2fd;--bottom-gradient-top:#1b72e8;--bottom-gradient-bottom:#4285f4;--button:linear-gradient(135deg,#1b72e8,#4285f4)}.dark-theme{--primary-contrast:#fff;--secondary-contrast:#ffffff99;--background-gradient:linear-gradient(90deg,#0b151e,#0b151e);--background:#0b151e;--muted:rgba(21,39,60,.6);--surface:#112031;--border:#ffffff20;--top-gradient:#1b72e833;--bottom-gradient-top:#1b72e8;--bottom-gradient-bottom:#1b72e850;--button:linear-gradient(90deg,#ffca28,#f57c00)}*{margin:0;font-family:Google Sans}html{background:var(--background)}body{color:var(--primary-contrast);background:var(--background-gradient);min-height:100dvh;display:flex;flex-direction:column;justify-content:center;align-items:center}.dots{pointer-events:none;height:100%;background-image:radial-gradient(circle at center,rgba(27,114,232,.08) 1px,transparent 0);background-size:30px 30px;background-position:12px 12px;-webkit-mask-image:linear-gradient(180deg,#000 0,transparent 50%);mask-image:linear-gradient(180deg,#000 0,transparent 50%)}.dots,.top-gradient{position:absolute;top:0;left:0;width:100%}.top-gradient{height:25vh;background:linear-gradient(180deg,transparent 0,var(--top-gradient) 50%);-webkit-clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 10vw));clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 10vw))}.bottom-gradient{position:fixed;bottom:0;width:90%;height:900px;margin-bottom:-550px;pointer-events:none;-webkit-user-select:none;-moz-user-select:none;user-select:none;--top:var(--bottom-gradient-top);--bottom:var(--bottom-gradient-bottom);--first:conic-gradient(from 90deg at 0% 50%,var(--top),var(--bottom));--second:conic-gradient(from 270deg at 100% 50%,var(--bottom),var(--top));-webkit-mask-image:radial-gradient(closest-side at 50% 50%,var(--background),transparent);mask-image:radial-gradient(closest-side at 50% 50%,var(--background),transparent);background-image:var(--first),var(--second);background-position-x:0,100%;background-position-y:100%,0;background-repeat:no-repeat;opacity:.15;transform:translateY(-200px) rotate(180deg) translateZ(0);transform-origin:center center}.header{position:fixed;top:0;left:0;right:0;z-index:100;background:hsla(0,0%,100%,.95);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:16px 32px;box-shadow:0 1px 3px rgba(0,0,0,.05)}.header-content{max-width:1200px;margin:0 auto;gap:12px}.header-icon{font-size:32px}.header-title{font-size:24px;font-weight:700;color:var(--primary-contrast);margin:0}.heading{font-size:48px;font-weight:500;letter-spacing:-2%;text-align:center}.regenerate-button{color:var(--background);background:var(--button)}.back-button{position:fixed;top:32px;left:32px;color:var(--primary-contrast);background-color:var(--surface);display:flex;align-items:center;gap:6px;text-decoration:none;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.button{font-size:15px;line-height:1.3;font-weight:500;padding:11px 16px;border-radius:100px;border:none;cursor:pointer;transition:scale .2s,filter .2s}.button:hover{filter:brightness(1.1)}.button:active{scale:.97}.content{margin:120px 12px;justify-content:center;gap:80px}.content,.content header{display:flex;flex-direction:column;align-items:center}.content header{gap:32px}.content header h2{font-size:20px;font-weight:400}.data-container,.features{display:grid;grid-gap:10px;gap:10px}.features{text-wrap:balance}.data-container,.features{grid-template-columns:repeat(2,1fr)}.data-container{text-wrap:pretty}.card{flex-direction:column;padding:24px;gap:12px;max-width:360px}.card h2{font-size:24px;line-height:1.2;font-weight:500;letter-spacing:-2%}.card p{font-size:13px;line-height:1.5;color:var(--secondary-contrast);letter-spacing:-1%}.card p a,.link{color:var(--primary-contrast);text-decoration:underline;text-underline-offset:2px}.links-container{padding-top:24px;gap:24px}.links,.links-container{display:flex;flex-wrap:wrap}.links{gap:10px}.links a{padding:14px 15px;color:var(--primary-contrast);font-size:14px;font-weight:500;text-decoration:none;white-space:nowrap;justify-content:center;align-items:center;gap:4px}.card,.links a{position:relative;border-radius:24px;background:var(--surface);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex}.card:before,.links a:before{content:"";position:absolute;inset:0;border-radius:24px;padding:1px;background:linear-gradient(var(--border),transparent 30%);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}.card:not(:first-child):after,.links a:not(:first-child):after{content:"";top:0;height:100%;background:var(--surface);position:absolute;pointer-events:none}.card:not(:first-child):after{width:10px;left:-10px;mask:url(/between-cards.svg) no-repeat center/contain;-webkit-mask:url(/between-cards.svg) no-repeat center/contain}.links a:not(:first-child):after{width:30px;left:calc(-20px);mask:url(/between-links.svg) no-repeat center/contain;-webkit-mask:url(/between-links.svg) no-repeat center/contain}.landing-main{width:100%;min-height:100vh;padding:100px 20px 40px;position:relative;z-index:1}.landing-container{max-width:1200px;margin:0 auto;gap:80px}.hero-section,.landing-container{display:flex;flex-direction:column}.hero-section{text-align:center;padding:60px 20px;align-items:center;gap:20px}.hero-icon{font-size:80px;animation:bounce 2s infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.hero-title{font-size:64px;font-weight:700;letter-spacing:-.02em;margin:0;background:linear-gradient(135deg,var(--primary-contrast),var(--secondary-contrast));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:24px;font-weight:500;color:var(--primary-contrast);margin:0}.hero-description{font-size:16px;color:var(--secondary-contrast);max-width:600px;line-height:1.6}.chat-section{max-width:700px;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:20px}.chat-bubble{background:#f8f9fa;border-radius:24px;padding:24px 32px;display:flex;align-items:center;gap:12px;border:1px solid var(--border);box-shadow:0 2px 6px rgba(0,0,0,.04)}.bubble-icon{font-size:28px}.chat-bubble p{margin:0;font-size:18px;color:var(--primary-contrast)}.chat-form{display:flex;gap:12px}.chat-input{flex:1 1;padding:20px 24px;font-size:16px;background:#fff;border:2px solid var(--border);border-radius:24px;color:var(--primary-contrast);outline:none;transition:all .3s;font-family:Google Sans;box-shadow:0 2px 6px rgba(0,0,0,.04)}.chat-input:focus{border-color:#1b72e8;box-shadow:0 4px 12px rgba(27,114,232,.15)}.chat-input::placeholder{color:var(--secondary-contrast)}.chat-submit-btn{padding:20px 32px;background:var(--button);color:var(--background);border:none;border-radius:24px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s;font-family:Google Sans;white-space:nowrap}.chat-submit-btn:hover:not(:disabled){transform:translateY(-2px);filter:brightness(1.1)}.chat-submit-btn:active:not(:disabled){transform:translateY(0)}.chat-submit-btn:disabled{opacity:.6;cursor:not-allowed}.features-section{padding:60px 20px}.features-title{text-align:center;font-size:36px;font-weight:600;margin-bottom:40px;color:var(--primary-contrast)}.features-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:24px;gap:24px;max-width:1200px;margin:0 auto}.feature-card{background:#fff;border-radius:20px;padding:32px 24px;text-align:center;border:1px solid var(--border);transition:transform .3s,box-shadow .3s;box-shadow:0 2px 8px rgba(0,0,0,.04)}.feature-card:hover{transform:translateY(-5px);box-shadow:0 12px 24px rgba(27,114,232,.15);border-color:#1b72e8}.feature-icon{font-size:48px;margin-bottom:16px}.feature-card h3{font-size:20px;font-weight:600;margin-bottom:12px;color:var(--primary-contrast)}.feature-card p{font-size:14px;line-height:1.6;color:var(--secondary-contrast);margin:0}.example-section{padding:60px 20px;background:transparent;border-radius:32px;max-width:900px;margin:0 auto}.example-title{text-align:center;font-size:32px;font-weight:600;margin-bottom:40px;color:var(--primary-contrast)}.example-chat{display:flex;flex-direction:column;gap:16px;background:#f8f9fa;padding:32px;border-radius:24px;border:1px solid var(--border);box-shadow:0 2px 8px rgba(0,0,0,.04)}.example-message{padding:16px 20px;max-width:70%;font-size:15px;line-height:1.6;position:relative;word-wrap:break-word}.user-message{background:#fee500;color:#191919;align-self:flex-end;border-radius:18px 18px 4px 18px;box-shadow:0 2px 8px rgba(0,0,0,.15);font-weight:500}.ai-message{align-self:flex-start;width:100%;max-width:100%;background:transparent;padding:0}.result-card{background:#fff;border-radius:18px 18px 18px 4px;padding:28px;border:none;box-shadow:0 2px 8px rgba(0,0,0,.15);position:relative}.result-header{margin-bottom:24px;text-align:center}.result-badge{display:inline-block;padding:12px 24px;border-radius:100px;font-weight:700;font-size:16px}.result-badge.warning{background:#f59e0b;color:#fff}.result-badge.success{background:#10b981;color:#fff}.result-badge.danger{background:#ef4444;color:#fff}.result-section{margin-bottom:24px}.result-section h4{font-size:19px;font-weight:700;margin-bottom:12px;color:#191919}.result-section ul{list-style:none;padding:0;margin:0}.result-section li{padding-left:24px;position:relative;margin-bottom:8px;color:#1a1a1a;line-height:1.7;font-size:16px;font-weight:500}.result-section li:before{content:"•";position:absolute;left:8px;color:#191919;font-weight:700;font-size:18px}.result-section p{color:#1a1a1a;margin:0}.result-conclusion,.result-section p{line-height:1.7;font-size:16px;font-weight:500}.result-conclusion{margin-top:24px;padding:18px 22px;background:#f5f5f5;border-radius:12px;color:#191919}.result-conclusion strong{font-weight:700;color:#191919}.cta-section{text-align:center;padding:60px 20px}.cta-text{font-size:24px;font-weight:600;margin-bottom:24px;color:var(--primary-contrast)}.cta-button{padding:20px 48px;background:var(--button);color:var(--background);border:none;border-radius:100px;font-size:18px;font-weight:700;cursor:pointer;transition:all .3s;font-family:Google Sans}.cta-button:hover{transform:translateY(-3px);filter:brightness(1.1);box-shadow:0 10px 30px rgba(0,0,0,.3)}.cta-button:active{transform:translateY(0)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.6);display:flex;justify-content:center;align-items:center;z-index:1000;animation:fadeIn .2s ease-out;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.auth-modal{background:#fff;padding:40px;border-radius:24px;width:90%;max-width:440px;box-shadow:0 20px 60px rgba(0,0,0,.3);position:relative;animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-close{position:absolute;top:20px;right:20px;background:none;border:none;font-size:24px;color:#999;cursor:pointer;width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s}.modal-close:hover{background:#f5f5f5;color:#333}.auth-modal h2{font-size:28px;font-weight:700;margin-bottom:8px;color:#1a1a1a;text-align:center}.modal-subtitle{text-align:center;color:#666;font-size:14px;margin-bottom:32px}.auth-modal form{gap:20px}.auth-modal form,.form-group{display:flex;flex-direction:column}.form-group{gap:8px}.form-group label{font-size:14px;font-weight:600;color:#333}.form-group input{padding:14px 16px;border:2px solid #e5e7eb;border-radius:12px;font-size:15px;font-family:Google Sans;transition:all .3s;color:#1a1a1a}.form-group input:focus{outline:none;border-color:#1b72e8;box-shadow:0 0 0 3px rgba(27,114,232,.1)}.form-group input:disabled{background:#f5f5f5;cursor:not-allowed}.form-group input::placeholder{color:#999}.error-message{color:#ef4444;font-size:14px;padding:12px 16px;background:#fee2e2;border-radius:8px;margin:-8px 0 0;animation:shake .3s ease-out}@keyframes shake{0%,to{transform:translateX(0)}25%{transform:translateX(-5px)}75%{transform:translateX(5px)}}.submit-btn{padding:14px 24px;background:linear-gradient(135deg,#1b72e8,#4285f4);color:#fff;border:none;border-radius:12px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s;font-family:Google Sans;margin-top:8px}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px rgba(27,114,232,.3)}.submit-btn:active:not(:disabled){transform:translateY(0)}.submit-btn:disabled{opacity:.6;cursor:not-allowed}.divider{display:flex;align-items:center;text-align:center;margin:24px 0;color:#999;font-size:14px}.divider:after,.divider:before{content:"";flex:1 1;border-bottom:1px solid #e5e7eb}.divider span{padding:0 16px}.google-login-btn{display:flex;align-items:center;justify-content:center;gap:12px;padding:14px 24px;background:#fff;border:2px solid #e5e7eb;border-radius:12px;font-size:15px;font-weight:500;cursor:pointer;transition:all .3s;font-family:Google Sans;color:#333}.google-login-btn:hover:not(:disabled){border-color:#1b72e8;background:#f8f9fa;box-shadow:0 4px 12px rgba(0,0,0,.08)}.google-login-btn:disabled{opacity:.6;cursor:not-allowed}.google-login-btn svg{width:20px;height:20px}.auth-switch{text-align:center;margin-top:24px;color:#666;font-size:14px}.switch-btn{background:none;border:none;color:#1b72e8;font-weight:600;cursor:pointer;text-decoration:none;transition:color .2s;font-family:Google Sans}.switch-btn:hover{color:#0d5bbd;text-decoration:underline}.header-content{display:flex;justify-content:space-between;align-items:center}.header-actions,.header-left{display:flex;align-items:center;gap:12px}.header-loading{color:#999;font-size:14px}.user-email{font-size:14px;color:#666;font-weight:500;max-width:200px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.login-btn,.logout-btn{padding:10px 20px;border:none;border-radius:20px;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s;font-family:Google Sans;white-space:nowrap}.login-btn{background:linear-gradient(135deg,#1b72e8,#4285f4);color:#fff;box-shadow:0 2px 8px rgba(27,114,232,.2)}.login-btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px rgba(27,114,232,.3)}.login-btn:active{transform:translateY(0)}.logout-btn{background:#f5f5f5;color:#666;border:1px solid #e5e7eb}.logout-btn:hover{background:#e5e7eb;color:#333}.history-btn{padding:10px 20px;border-radius:20px;font-weight:600;font-size:14px;cursor:pointer;transition:all .3s;font-family:Google Sans;white-space:nowrap;background:#fff3e0;color:#e65100;border:1px solid #ffe0b2}.history-btn:hover{background:#ffe0b2;color:#bf360c;transform:translateY(-2px)}@media only screen and (max-width:1023px){.heading{font-size:36px}.back-button{top:10px;left:10px}.data-container,.features{grid-template-columns:1fr}.card:after,.links a:after,.top-gradient{display:none}.bottom-gradient{width:150%;height:400px;margin-bottom:-450px}.header{padding:12px 20px}.header-icon{font-size:24px}.header-title{font-size:20px}.landing-main{padding:80px 16px 40px}.hero-icon{font-size:60px}.hero-title{font-size:40px}.hero-subtitle{font-size:18px}.hero-description{font-size:14px}.hero-section{padding:40px 16px}.chat-form{flex-direction:column}.chat-submit-btn{width:100%}.features-grid{grid-template-columns:repeat(2,1fr)}.cta-section,.example-section,.features-section{padding:40px 16px}.example-title,.features-title{font-size:28px}.example-chat{padding:20px}.example-message{max-width:85%;padding:14px 16px;font-size:14px}.result-card{padding:20px}.result-badge{font-size:14px;padding:10px 20px}.result-section h4{font-size:17px}.result-conclusion,.result-section li,.result-section p{font-size:15px}.landing-container{gap:50px}.auth-modal{padding:32px 24px;max-width:95%}.auth-modal h2{font-size:24px}.modal-subtitle{font-size:13px}.form-group input{font-size:14px;padding:12px 14px}.google-login-btn,.submit-btn{font-size:14px;padding:12px 20px}.user-email{display:none}.login-btn,.logout-btn{font-size:13px;padding:8px 16px}}