:root{--bg-surface-hover:#1a1a1a;--primary-glow:rgba(255,82,0,0.3);--radius-sm:8px;--radius-lg:16px;--container-width:1400px;--header-height:80px;--nav-height:70px}html{height:auto;min-height:100%}.auth-page-wrapper,.mobile-nav-active,.onboarding-wrapper{width:100%;flex:1 1;display:flex;flex-direction:column}body{font-family:var(--font-body);background-color:var(--bg-main);color:var(--text-main);min-height:100vh;display:flex;flex-direction:column;overflow-y:auto!important;overflow-x:hidden;line-height:1.6;position:relative}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(circle at 15% 50%,rgba(255,82,0,.08) 0,transparent 50%),radial-gradient(circle at 85% 10%,rgba(255,255,255,.03) 0,transparent 50%);z-index:-1;pointer-events:none}h1,h2,h3,h4{font-family:var(--font-heading);text-transform:uppercase;font-weight:700;letter-spacing:1px}.main-header,header{position:-webkit-sticky;position:sticky;padding:1.2rem 2rem;justify-content:space-between;border-bottom:1px solid var(--border-color);background:rgba(5,5,5,.9);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);z-index:1000}.main-header,.marquee-container,header{width:100%;top:0;display:flex;align-items:center}.marquee-container{position:absolute;left:0;height:100%;z-index:-1;opacity:.04;overflow:hidden;pointer-events:none}.marquee-text{display:flex;white-space:nowrap;animation:marquee-scroll 40s linear infinite}.marquee-text span{font-family:var(--font-heading);font-size:8rem;font-weight:700;color:#fff;padding-right:50px}@keyframes marquee-scroll{0%{transform:translateX(0)}to{transform:translateX(-50%)}}#logoBtn{background:transparent!important;border:none!important;box-shadow:none!important;color:var(--text-main);font-family:var(--font-heading);font-size:3.5rem;letter-spacing:2px;cursor:pointer;transition:color .3s ease;padding:0}#logoBtn:hover{color:var(--primary-accent);transform:none;text-shadow:0 0 20px var(--primary-glow)}.nav-icon,.nav-label{display:none}.profile-icon-nav{width:28px;height:28px;border-radius:50%;overflow:hidden;border:1.5px solid #666;transition:border-color .3s}.tab-btn.active .profile-icon-nav{border-color:var(--primary-accent)}.profile-icon-nav img{width:100%;height:100%;object-fit:cover}.container{width:100%;max-width:var(--container-width);margin:0 auto;padding:2rem;flex:1 1;display:flex;flex-direction:column}.muscle-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));grid-gap:2rem;gap:2rem;margin-top:2rem}.muscle-card{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:3rem 2rem;display:flex;flex-direction:column;align-items:center;justify-content:center;transition:all .3s cubic-bezier(.25,.8,.25,1);position:relative;overflow:hidden}.muscle-card:hover{transform:translateY(-5px);border-color:var(--primary-accent);box-shadow:0 10px 30px -10px var(--primary-glow);background:var(--bg-surface-hover)}.muscle-card h2{font-size:2.5rem;margin-bottom:1.5rem;color:var(--text-main);z-index:2}.detail-btn{background:transparent;color:var(--primary-accent);border:1px solid var(--primary-accent);padding:.8rem 2rem;font-family:var(--font-heading);font-size:1rem;letter-spacing:2px;text-transform:uppercase;cursor:pointer;border-radius:4px;transition:all .3s ease;width:100%;max-width:200px;text-align:center;z-index:2}.detail-btn:hover{background:var(--primary-accent);color:#000;box-shadow:0 0 20px var(--primary-glow)}.main-page.hidden{display:none}.detail-page{display:none;animation:fadeIn .4s ease}.detail-page.active{display:block}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.page-title{font-size:3rem;text-align:center;color:var(--primary-accent);margin:2rem 0 3rem;text-shadow:0 0 30px rgba(255,82,0,.2)}.back-btn{background:transparent;border:1px solid var(--border-color);color:var(--text-secondary);margin-bottom:2rem;display:inline-block;width:auto}.back-btn:hover{border-color:var(--text-main);background:var(--bg-surface-hover);color:var(--text-main);box-shadow:none}.subsection-card{margin-bottom:4rem}.subsection-card h3{font-size:2rem;color:var(--text-main);margin-bottom:1.5rem;border-left:4px solid var(--primary-accent);padding-left:1rem}.exercise-item{background:var(--bg-surface);border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:2rem;margin-bottom:1.5rem;transition:border-color .3s ease}.exercise-item:hover{border-color:#444}.exercise-item h4{color:var(--primary-accent);font-size:1.4rem;margin-bottom:.5rem}.exercise-item p{color:var(--text-secondary);font-size:1rem;max-width:800px}.exercise-video{width:100%;max-width:500px;border-radius:var(--radius-sm);margin-top:1.5rem;border:1px solid var(--border-color)}.video-btn{margin-top:1rem;background:#222;color:#fff;border:none;padding:.6rem 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translateY(-5px);opacity:1;background-color:#fff}}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:#0a0a0a}::-webkit-scrollbar-thumb{background:#333;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#555}@media (max-width:768px){:root{--header-height:60px}body{padding-bottom:var(--nav-height)}header.main-header{padding:0 1rem;height:var(--header-height);display:flex;align-items:center;justify-content:flex-start!important;position:-webkit-sticky;position:sticky;top:0;z-index:1001;background:rgba(5,5,5,.95);-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px)}.logo-container{gap:6px}.brand-name{font-size:1.4rem;color:var(--primary-accent);font-weight:800;letter-spacing:2px;text-shadow:0 0 10px rgba(255,82,0,.2);font-size:1.5rem!important;color:var(--primary-accent)!important;font-weight:800!important;display:block!important}.mobile-nav-active 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var(--nav-height))}.ai-greeting{top:30%}.ai-hero-text{font-size:1.5rem}.ai-header-logo h1{font-size:1.8rem}.input-wrapper{top:75%;width:100%;padding:0 1rem}.input-wrapper.chat-mode{padding:1rem;bottom:var(--nav-height)}}*{box-sizing:border-box;margin:0;padding:0}.logo-container{display:flex;align-items:center;gap:10px;z-index:101}.logo{height:40px;width:auto}.brand-name{font-size:1.8rem;letter-spacing:2px;text-shadow:0 0 20px rgba(255,82,0,.2);transition:all .3s ease;display:inline-block}.nav-tabs{display:flex;gap:2rem;z-index:101}.nav-tabs .tab{text-decoration:none;color:var(--text-secondary);font-family:var(--font-heading);text-transform:uppercase;font-size:1rem;letter-spacing:1px;transition:color .3s ease}.nav-tabs .tab.active,.nav-tabs .tab:hover{color:var(--primary-accent)}h1{position:absolute;left:50%;transform:translateX(-50%);z-index:101}.scheduler-container{max-width:var(--container-width);margin:2rem auto;padding:0 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span{color:#ff4444;cursor:pointer;font-weight:700;padding:0 5px;transition:color .2s}.day-exercises li span:hover{color:#ff0000}.add-ex-btn{background:#222;border:1px solid #333;color:#fff;padding:.8rem;cursor:pointer;font-size:.9rem;width:100%;border-radius:4px;font-family:var(--font-heading);letter-spacing:1px;transition:all .2s ease;margin-top:auto}.add-ex-btn:hover{background:var(--primary-accent);color:#000;border-color:var(--primary-accent)}dialog{background:rgba(10,10,10,.95);color:white;border:1px solid var(--primary-accent);padding:2.5rem;border-radius:var(--radius-lg);box-shadow:0 0 40px rgba(255,82,0,.15);max-width:500px;width:90%;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}dialog::-webkit-backdrop{background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}dialog::backdrop{background:rgba(0,0,0,.85);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}dialog 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#333;border-radius:var(--radius-sm);font-family:var(--font-body);font-size:1rem;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23FF5200%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");background-repeat:no-repeat;background-position:right 1rem top 50%;background-size:.8rem auto;transition:all .3s ease}.modal-select:focus{outline:none;border-color:var(--primary-accent);box-shadow:0 0 15px rgba(255,82,0,.2)}.modal-select:disabled{opacity:.5;cursor:not-allowed;border-color:#222}.btn-modal{padding:.8rem 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cubic-bezier(.16,1,.3,1)}.guest-banner-text{font-family:var(--font-body)}.guest-signin-btn{background:var(--primary-accent);font-family:var(--font-heading)}.guest-dismiss-btn:hover{border-color:var(--primary-accent);color:var(--primary-accent)}@keyframes guestSlideDown{0%{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}.guest-conversion-modal{background:var(--bg-surface)}.conversion-header h2{font-family:var(--font-heading)}.conversion-input-group input{font-family:var(--font-body)}.conversion-input-group input:focus{border-color:var(--primary-accent)}.conversion-submit-btn{font-family:var(--font-heading)}.conversion-submit-btn:hover{background:var(--primary-accent)}.conversion-close-btn{font-family:var(--font-body)}@media (max-width:768px){.guest-banner-content{flex-direction:column;text-align:center;gap:10px}.guest-banner-text{flex-direction:column;gap:4px}.conversion-card{padding:1.8rem}}:root{--bg-main:#050505;--bg-surface:#121212;--primary-accent:#FF5200;--primary-glow:rgba(255,82,0,0.4);--text-main:#FFFFFF;--text-secondary:#A1A1A1;--border-color:#2A2A2A;--font-heading:"Oswald",sans-serif;--font-body:"Inter",sans-serif}.auth-page-wrapper{display:flex;justify-content:center;align-items:center;width:100%;height:100vh;position:relative;background:radial-gradient(circle at center,#111 0,#000 100%)}.auth-page-wrapper:before{content:"";position:absolute;width:800px;height:800px;background:radial-gradient(circle,var(--primary-glow) 0,transparent 60%);top:50%;left:50%;transform:translate(-50%,-50%);opacity:.15;pointer-events:none;z-index:0;animation:pulseGlow 5s ease-in-out infinite alternate}@keyframes pulseGlow{0%{opacity:.1;transform:translate(-50%,-50%) scale(.95)}to{opacity:.2;transform:translate(-50%,-50%) scale(1.05)}}.auth-container{width:100%;max-width:440px;z-index:10;background:rgba(18,18,18,.7);backdrop-filter:blur(25px);-webkit-backdrop-filter:blur(25px);border:1px solid rgba(255,255,255,.05);border-radius:20px;padding:3.5rem;box-shadow:0 30px 60px -12px rgba(0,0,0,.7);margin:0 1rem}.brand-header{text-align:center;margin-bottom:2rem}.brand-name{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--primary-accent);letter-spacing:3px;text-shadow:0 0 20px var(--primary-glow)}.auth-form{display:none;flex-direction:column;gap:1.5rem;animation:fadeUp .6s cubic-bezier(.16,1,.3,1)}.auth-form.active{display:flex}@keyframes fadeUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.form-header{margin-bottom:1rem;text-align:center}.form-header h2{font-family:var(--font-heading);font-size:2.2rem;color:var(--text-main);margin-bottom:.5rem;letter-spacing:1.5px;text-transform:uppercase}.form-header p{color:var(--text-secondary);font-size:.95rem}.floating-label-group{position:relative;margin-bottom:.5rem}.floating-input{width:100%;padding:1.5rem 1rem .5rem;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.1);border-radius:12px;color:#fff;font-family:var(--font-body);font-size:1rem;transition:all .3s ease;box-sizing:border-box}.floating-input:focus{outline:none;border-color:var(--primary-accent);background:rgba(255,82,0,.03);box-shadow:0 0 0 4px rgba(255,82,0,.1)}.floating-label{position:absolute;top:50%;left:1rem;transform:translateY(-50%);color:var(--text-secondary);pointer-events:none;transition:all .2s 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cubic-bezier(.16,1,.3,1);text-transform:uppercase;letter-spacing:1.5px;font-weight:700;display:flex;align-items:center;justify-content:center;gap:12px;position:relative;overflow:hidden;margin-top:.5rem}.auth-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);transition:left .5s}.auth-btn:hover{background:var(--primary-accent);transform:translateY(-3px);box-shadow:0 12px 25px var(--primary-glow)}.auth-btn:hover:before{left:100%}.btn-icon{width:22px;height:22px;transition:transform .3s ease}.auth-btn:hover .btn-icon{transform:translateX(5px)}.divider{display:flex;align-items:center;color:#555;font-size:.85rem;margin:1.5rem 0;font-weight:600}.divider:after,.divider:before{content:"";flex:1 1;border-bottom:1px solid 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#333}.slider{width:80%;accent-color:#FF5200;cursor:pointer}.slider-value{font-family:Oswald,sans-serif;font-size:3rem;color:#FF5200;font-weight:700;margin-top:10px}.slider-note{color:#666;font-size:.9rem;margin-top:5px}#splitName{color:white;font-weight:700}.checkbox-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:12px;gap:12px}.check-card{display:flex;align-items:center;gap:10px;background:#1a1a1a;padding:15px;border-radius:6px;border:1px solid #333;cursor:pointer;color:#ccc;transition:.2s}.check-card:hover{border-color:#555}.check-card input{accent-color:#FF5200;width:18px;height:18px}.summary-container{background:#1a1a1a;border:1px solid #333;border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:20px}.summary-section{border-bottom:1px solid #2a2a2a;padding-bottom:16px}.summary-section:last-child{border-bottom:none;padding-bottom:0}.summary-section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.summary-section 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0;font-size:2.5rem;color:#fff;letter-spacing:2px}.workout-meta{color:#888;font-size:1rem;margin-bottom:8px}.workout-goal-focus{color:var(--primary-accent);font-size:.9rem;font-weight:600}.preview-btn{width:100%;background:var(--primary-accent);color:#000;font-family:var(--font-heading);font-size:1.1rem;font-weight:600;padding:1.2rem;border-radius:16px;border:none;cursor:pointer;transition:all .3s ease;text-transform:uppercase;letter-spacing:.5px;margin-top:1rem}.preview-btn:hover{filter:brightness(1.1);transform:translateY(-2px);box-shadow:0 10px 20px rgba(255,82,0,.2)}.btn-empty-workout{display:flex;align-items:center;gap:10px;width:100%;background:#1e1e1e;border:none;padding:1rem 1.5rem;border-radius:16px;color:#fff;cursor:pointer;margin-top:1.5rem;font-size:1rem;transition:background .2s;max-width:500px;margin-left:auto;margin-right:auto}.btn-empty-workout:hover{background:#2a2a2a}.empty-card{background:#151515;border:1px dashed 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