:root{--bg-color: #050508;--card-bg: rgba(15, 15, 25, .7);--card-border: rgba(255, 255, 255, .08);--text-primary: #ffffff;--text-secondary: #8e8e9f;--accent-cyan: #00f2fe;--accent-cyan-glow: rgba(0, 242, 254, .3);--accent-purple: #9d4edd;--accent-purple-glow: rgba(157, 78, 221, .3);--accent-green: #00ff87;--accent-green-glow: rgba(57, 255, 20, .2);--accent-red: #ff3333;--header-height: 60px;--nav-height: 65px;--border-radius: 16px;--transition: all .3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:#000;color:var(--text-primary);overflow-x:hidden;display:flex;justify-content:center;min-height:100vh}#root{width:100%;display:flex;justify-content:center}.app-container{width:100%;max-width:100%;min-height:100vh;min-height:100dvh;background-color:var(--bg-color);display:flex;flex-direction:column;position:relative;overflow-x:hidden}.app-header{height:var(--header-height);padding:0 20px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--card-border);background:rgba(10,10,18,.8);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10;flex-shrink:0}.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.1rem;letter-spacing:1px;background:linear-gradient(90deg,var(--accent-cyan),var(--accent-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.logo-icon{stroke:var(--accent-cyan);width:20px;height:20px}.app-main{flex:1;overflow-y:auto;padding:20px;padding-bottom:calc(var(--nav-height) + 30px + env(safe-area-inset-bottom,0px))}.app-nav{position:fixed;bottom:0;left:0;right:0;width:100%;height:calc(var(--nav-height) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:rgba(10,10,18,.95);border-top:1px solid var(--card-border);backdrop-filter:blur(15px);-webkit-backdrop-filter:blur(15px);display:flex;justify-content:space-around;align-items:center;z-index:1000}.nav-item{background:none;border:none;color:var(--text-secondary);display:flex;flex-direction:column;align-items:center;gap:4px;cursor:pointer;font-size:.7rem;font-weight:500;width:25%;height:100%;justify-content:center;transition:var(--transition)}.nav-item i{width:22px;height:22px;transition:var(--transition)}.nav-item.active{color:var(--accent-cyan);text-shadow:0 0 10px var(--accent-cyan-glow)}.nav-item.active i{transform:translateY(-2px);stroke:var(--accent-cyan);filter:drop-shadow(0 0 4px var(--accent-cyan-glow))}.app-screen{display:none;flex-direction:column;gap:20px}.app-screen.active{display:flex;animation:fadeIn .4s ease-out}.glass-card{background:var(--card-bg);border:1px solid var(--card-border);border-radius:var(--border-radius);padding:20px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 32px #0000004d}.welcome-card{background:linear-gradient(135deg,rgba(0,242,254,.1),rgba(157,78,221,.1));border:1px solid rgba(0,242,254,.2)}.welcome-card h2{font-size:1.4rem;font-weight:700;margin-bottom:6px;background:linear-gradient(90deg,#fff,var(--text-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.welcome-card p{font-size:.9rem;color:var(--text-secondary)}.section-title{font-size:.9rem;text-transform:uppercase;letter-spacing:1.5px;color:var(--accent-cyan);margin-top:10px;border-left:3px solid var(--accent-cyan);padding-left:10px}.start-options{display:grid;grid-template-columns:1fr 1fr;gap:15px}.interactive-card{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;cursor:pointer;transition:var(--transition)}.interactive-card:hover,.interactive-card:active{transform:translateY(-4px);border-color:#fff3}.card-icon{width:32px;height:32px;margin-bottom:5px}.card-icon.cyan{stroke:var(--accent-cyan);filter:drop-shadow(0 0 6px var(--accent-cyan-glow))}.card-icon.purple{stroke:var(--accent-purple);filter:drop-shadow(0 0 6px var(--accent-purple-glow))}.interactive-card h4{font-size:.95rem;font-weight:600}.interactive-card p{font-size:.75rem;color:var(--text-secondary);line-height:1.3}.form-group{display:flex;flex-direction:column;gap:8px;margin-bottom:15px}.form-group label{font-size:.8rem;color:var(--text-secondary);font-weight:500}.app-input{background:rgba(255,255,255,.05);border:1px solid var(--card-border);border-radius:8px;padding:12px;color:#fff;font-family:inherit;font-size:.95rem;outline:none;transition:var(--transition)}.app-input:focus{border-color:var(--accent-cyan);box-shadow:0 0 8px var(--accent-cyan-glow)}select.app-input{-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;background-size:16px;padding-right:36px}select option{background-color:#12121e;color:#fff}.rating-buttons{display:flex;gap:8px}.btn-rating{flex:1;background:rgba(255,255,255,.05);border:1px solid var(--card-border);color:#fff;padding:10px 0;border-radius:8px;font-weight:600;cursor:pointer;transition:var(--transition)}.btn-rating.active{background:var(--accent-cyan);border-color:var(--accent-cyan);color:#000;box-shadow:0 0 12px var(--accent-cyan-glow)}.rating-buttons-text{display:flex;gap:8px}.btn-rating-text{flex:1;background:rgba(255,255,255,.05);border:1px solid var(--card-border);color:#fff;padding:10px 0;border-radius:8px;font-size:.85rem;font-weight:500;cursor:pointer;transition:var(--transition)}.btn-rating-text.active{background:var(--accent-purple);border-color:var(--accent-purple);color:#fff;box-shadow:0 0 12px var(--accent-purple-glow)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;border-radius:10px;font-weight:600;font-size:.9rem;padding:12px 20px;cursor:pointer;transition:var(--transition);font-family:inherit}.btn-primary{background:linear-gradient(90deg,var(--accent-cyan),var(--accent-purple));color:#fff;box-shadow:0 4px 15px #00f2fe33}.btn-primary:active{transform:scale(.98)}.btn-secondary{background:rgba(255,255,255,.08);border:1px solid var(--card-border);color:#fff}.btn-secondary:active{background:rgba(255,255,255,.12)}.btn-success{background:var(--accent-green);color:#000;box-shadow:0 4px 15px var(--accent-green-glow)}.btn-icon{background:none;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;gap:6px;font-size:.85rem;font-weight:600;padding:6px 10px;border-radius:8px;background:rgba(255,255,255,.04)}.btn-sm{padding:8px 12px;font-size:.8rem}.w-full{width:100%}.screen-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:5px}.exercise-list,.preset-list,.history-list{display:flex;flex-direction:column;gap:12px}.list-item{display:flex;justify-content:space-between;align-items:center}.item-info h4{font-size:.95rem;font-weight:600;margin-bottom:4px}.item-info p{font-size:.75rem;color:var(--text-secondary)}.item-badge{display:inline-block;padding:3px 8px;font-size:.65rem;font-weight:700;text-transform:uppercase;border-radius:4px;background:rgba(0,242,254,.1);color:var(--accent-cyan);border:1px solid rgba(0,242,254,.2)}.btn-delete-item{background:none;border:none;color:var(--accent-red);cursor:pointer;padding:6px;border-radius:6px;transition:var(--transition)}.btn-delete-item:hover{background:rgba(255,51,51,.1)}.workout-header{display:flex;justify-content:space-between;align-items:center;border-left:4px solid var(--accent-cyan);padding:15px 20px}.workout-title-area h2{font-size:1.15rem;font-weight:700}#workout-timer{font-family:monospace;font-size:.9rem;color:var(--accent-cyan);font-weight:600}.workout-meta-controls{display:flex;flex-direction:column;gap:8px}.workout-exercises{display:flex;flex-direction:column;gap:15px;margin-top:10px}.workout-card{border-left:3px solid var(--accent-purple)}.workout-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}.workout-card-title h4{font-size:1rem;font-weight:600}.workout-card-title span{font-size:.75rem;color:var(--text-secondary)}.last-session-info{font-size:.8rem;background:rgba(157,78,221,.08);border:1px dashed rgba(157,78,221,.3);padding:8px 12px;border-radius:8px;display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.last-session-label{color:var(--accent-purple);font-weight:600;font-size:.75rem}.last-session-val{color:#fff;font-weight:500}.btn-copy-last{background:none;border:none;color:var(--accent-cyan);font-size:.75rem;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;gap:4px}.sets-header{display:grid;grid-template-columns:.5fr 1.3fr 1.3fr 2.4fr .5fr;font-size:.7rem;text-transform:uppercase;color:var(--text-secondary);font-weight:700;padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,.05);margin-bottom:10px;text-align:center}.set-row{display:grid;grid-template-columns:.5fr 1.3fr 1.3fr 2.4fr .5fr;align-items:center;margin-bottom:10px;gap:4px}.set-num{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-align:center}.num-counter{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.04);border:1px solid var(--card-border);border-radius:8px;padding:2px;min-height:44px}.btn-counter{min-width:44px;min-height:44px;width:44px;height:44px;background:rgba(255,255,255,.1);border:none;color:#fff;font-weight:800;font-size:1.1rem;border-radius:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;touch-action:manipulation;-webkit-user-select:none;user-select:none}.btn-counter:active{background:rgba(255,255,255,.3)}.counter-val{font-size:.8rem;font-weight:700;text-align:center;white-space:nowrap;padding:0 2px;flex:1}.rir-btn-group{display:flex;gap:2px;background:rgba(0,0,0,.25);border:1px solid var(--card-border);border-radius:8px;padding:2px;width:100%;justify-content:space-between}.btn-rir{flex:1;min-width:20px;min-height:44px;background:transparent;border:1px solid transparent;border-radius:6px;color:var(--text-secondary);font-size:.78rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .15s ease-in-out;padding:0}.btn-rir:active{transform:scale(.92)}.btn-rir.active.rir-val-0{background:rgba(255,77,77,.25);border-color:#ff4d4d;color:#ff4d4d;box-shadow:0 0 8px #ff4d4d66}.btn-rir.active.rir-val-1,.btn-rir.active.rir-val-2{background:rgba(0,242,254,.2);border-color:var(--accent-cyan);color:var(--accent-cyan);box-shadow:0 0 8px #00f2fe59}.btn-rir.active.rir-val-3,.btn-rir.active.rir-val-4{background:rgba(157,78,221,.2);border-color:var(--accent-purple);color:#e2e8f0;box-shadow:0 0 6px #9d4edd4d}.btn-check-set{background:none;border:none;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center}.btn-check-set.checked{color:var(--accent-green);filter:drop-shadow(0 0 4px var(--accent-green-glow))}.workout-card-footer{display:flex;justify-content:space-between;margin-top:12px;gap:10px}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:none;justify-content:center;align-items:center;padding:20px}.modal-overlay.active{display:flex}.modal-content{width:100%;max-width:400px;max-height:92vh;overflow-y:auto;animation:slideUp .3s cubic-bezier(.16,1,.3,1)}.modal-content h3{font-size:1.15rem;margin-bottom:15px;color:var(--accent-cyan)}.modal-buttons{display:flex;gap:10px;margin-top:20px}.modal-buttons button{flex:1}.exercise-checkbox-list{max-height:200px;overflow-y:auto;display:flex;flex-direction:column;gap:8px;background:rgba(0,0,0,.2);border:1px solid var(--card-border);border-radius:8px;padding:10px}.checkbox-item{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:.85rem;padding:6px;border-radius:4px;transition:var(--transition)}.checkbox-item:hover{background:rgba(255,255,255,.05)}.checkbox-item input{width:16px;height:16px;accent-color:var(--accent-cyan)}.preset-start-buttons{display:flex;flex-direction:column;gap:10px}.export-card{border-top:4px solid var(--accent-cyan)}.export-card h3{font-size:1.05rem;margin-bottom:6px}.description{font-size:.8rem;color:var(--text-secondary);line-height:1.4;margin-bottom:15px}.export-form{display:flex;flex-direction:column;gap:12px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:10px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.header-nav{display:none;gap:10px;align-items:center;margin-right:15px}.nav-item-header{background:none;border:none;color:var(--text-secondary);font-size:.85rem;font-weight:600;cursor:pointer;padding:8px 14px;border-radius:8px;transition:var(--transition)}.nav-item-header:hover{color:#fff;background:rgba(255,255,255,.05)}.nav-item-header.active{color:var(--accent-cyan);background:rgba(0,242,254,.08)}@media (min-width: 768px){body{background-color:#020204}.app-container{max-width:500px;height:100vh;margin:0 auto;box-shadow:0 0 50px #00f2fe1a;border-left:1px solid var(--card-border);border-right:1px solid var(--card-border)}}@media (min-width: 768px){.app-container{max-width:1000px;height:auto;min-height:100vh;margin:0 auto;border-left:1px solid var(--card-border);border-right:1px solid var(--card-border);box-shadow:0 0 45px #0009}.header-nav{display:flex}.app-nav{display:none!important}.app-main{padding-bottom:20px}#screen-dashboard.active{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}.welcome-card,#panel-body-stats{grid-column:span 2}.landing-features{display:grid!important;grid-template-columns:repeat(3,1fr)!important;gap:20px!important}}.interval-toast{position:fixed;bottom:80px;right:20px;width:220px;background:rgba(10,10,18,.95);border:1px solid var(--accent-green);box-shadow:0 0 25px #39ff1426;border-radius:12px;padding:15px;display:none;flex-direction:column;gap:10px;z-index:1000;animation:slideUp .3s cubic-bezier(.16,1,.3,1)}.interval-toast.active{display:flex}.interval-timer-digits{font-size:2.2rem;font-weight:900;color:var(--accent-green);text-align:center;font-family:monospace;letter-spacing:2px;text-shadow:0 0 10px rgba(57,255,20,.2)}.barbell-loading-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:rgba(10,14,26,.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:99999;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:auto;animation:fadeInOverlay .25s ease-out forwards}.barbell-pulse-wrapper{position:relative;display:flex;align-items:center;justify-content:center;width:100px;height:100px;margin-bottom:20px}.barbell-pulse-glow{position:absolute;width:75px;height:75px;border-radius:50%;background:radial-gradient(circle,rgba(0,242,254,.4) 0%,rgba(157,78,221,.2) 60%,transparent 100%);animation:neonPulseGlow 1.5s infinite ease-in-out alternate;filter:blur(10px)}.barbell-icon-svg{width:70px;height:70px;z-index:2;color:var(--accent-cyan, #00f2fe);animation:barbellBouncePulse 1.2s infinite cubic-bezier(.45,.05,.55,.95);filter:drop-shadow(0 0 12px rgba(0,242,254,.6))}.loading-neon-text{font-size:.95rem;font-weight:700;letter-spacing:2.5px;color:#fff;text-transform:uppercase;animation:textNeonPulse 1.5s infinite ease-in-out alternate;text-shadow:0 0 10px rgba(0,242,254,.7)}@keyframes fadeInOverlay{0%{opacity:0}to{opacity:1}}@keyframes neonPulseGlow{0%{transform:scale(.8);opacity:.4}to{transform:scale(1.3);opacity:.9}}@keyframes barbellBouncePulse{0%,to{transform:scale(1) rotate(0);filter:drop-shadow(0 0 10px rgba(0,242,254,.6))}50%{transform:scale(1.18) rotate(-4deg);filter:drop-shadow(0 0 20px rgba(157,78,221,.9))}}@keyframes textNeonPulse{0%{opacity:.5;color:#8a99ad}to{opacity:1;color:#fff}}.weight-step-selector{display:flex;align-items:center;gap:4px;margin-top:4px}.btn-step{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);color:var(--text-secondary);font-size:.65rem;font-weight:600;padding:2px 6px;border-radius:4px;cursor:pointer;transition:all .2s ease}.btn-step.active{background:rgba(0,242,254,.15);border-color:var(--accent-cyan);color:var(--accent-cyan);font-weight:700}