:root{--bg-color:#000;--card-bg:#fff;--card-text:#000;--card-muted:#888;--accent:#000;--border-light:#e5e5e5;--focus-ring:#0000001a}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:#fff;-webkit-font-smoothing:antialiased;justify-content:center;align-items:center;min-height:100dvh;font-family:Outfit,sans-serif;display:flex;overflow:hidden}.app-wrapper{flex-direction:column;width:100%;min-width:min(100vw,480px);max-width:480px;height:100dvh;padding:2rem 1.25rem;display:flex}.brand-header{z-index:50;justify-content:center;align-items:center;gap:1rem;margin-bottom:2rem;animation:1s fadeIn;display:flex}.logo{border-radius:14px;width:54px;height:54px;box-shadow:0 4px 20px #ffffff26}.brand-title{letter-spacing:-.05em;font-size:1.5rem;font-weight:800}.stack-container{perspective:1500px;flex:1;width:100%;margin-bottom:2rem;position:relative}.card{background-color:var(--card-bg);width:100%;height:100%;color:var(--card-text);transform-origin:top;will-change:transform, opacity;border-radius:32px;flex-direction:column;padding:1.5rem;transition:all .7s cubic-bezier(.16,1,.3,1);display:flex;position:absolute;top:0;left:0;overflow:hidden;box-shadow:0 30px 60px #0009}.card-active{opacity:1;pointer-events:auto;transform:translateY(0)scale(1)}.card-passed{opacity:.85;pointer-events:none;filter:brightness(.9);transform:translateY(-24px)scale(.92);box-shadow:0 0 40px #ffffff0d}.card-upcoming{opacity:0;pointer-events:none;transform:translateY(80px)scale(.85)}.card-header{flex-shrink:0;justify-content:space-between;align-items:center;height:48px;margin-bottom:1.5rem;display:flex}.step-indicator{letter-spacing:2px;color:var(--card-muted);background:#f5f5f5;border-radius:20px;margin-left:auto;padding:.5rem 1rem;font-size:1rem;font-weight:800}.back-btn{cursor:pointer;color:var(--card-text);background:#f5f5f5;border:none;border-radius:24px;justify-content:center;align-items:center;width:48px;height:48px;transition:all .3s;display:flex}.back-btn:hover{background:#e5e5e5;transform:scale(1.05)}.back-btn:active{transform:scale(.95)}.card-body{scrollbar-width:none;flex-direction:column;flex:1;display:flex;overflow:hidden auto}.card-body::-webkit-scrollbar{display:none}.card-title{letter-spacing:-.04em;color:#111;flex-shrink:0;margin-bottom:1.5rem;font-size:2rem;font-weight:800;line-height:1.1}.card-form{flex-direction:column;flex:1;display:flex}.minimal-input{border:none;border-bottom:3px solid var(--border-light);width:100%;color:var(--card-text);background:0 0;border-radius:0;flex-shrink:0;padding:.5rem 0 1rem;font-family:inherit;font-size:1.75rem;font-weight:600;transition:all .4s cubic-bezier(.16,1,.3,1)}.minimal-input::placeholder{color:#d0d0d0;font-weight:400}.minimal-input:focus{border-bottom-color:var(--accent);outline:none}.radio-group-vertical{flex-direction:column;flex-shrink:0;gap:.75rem;display:flex}.radio-label{cursor:pointer;position:relative}.radio-input{opacity:0;position:absolute}.radio-button{border:2px solid var(--border-light);color:var(--card-muted);border-radius:20px;align-items:center;gap:1rem;padding:1.1rem 1rem;font-size:1.1rem;font-weight:600;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex}.radio-button:before{content:"";border:2px solid var(--border-light);border-radius:50%;width:24px;height:24px;transition:all .3s}.radio-input:checked+.radio-button{border-color:var(--accent);color:var(--card-bg);background-color:var(--accent);transform:translateY(-2px);box-shadow:0 12px 24px #00000026}.radio-input:checked+.radio-button:before{border-color:var(--card-bg);background-color:var(--card-bg);box-shadow:inset 0 0 0 4px var(--accent)}.card-footer{margin-top:auto;padding-top:2rem}.next-btn{background-color:var(--accent);color:#fff;cursor:pointer;border:none;border-radius:32px;justify-content:center;align-items:center;width:100%;height:64px;font-family:inherit;font-size:1.25rem;font-weight:700;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;box-shadow:0 10px 20px #0000001a}.next-btn:disabled{opacity:.3;cursor:not-allowed;box-shadow:none;transform:none}.error-text{color:#d32f2f;margin-top:.75rem;font-size:.9rem;font-weight:600;animation:.3s fadeIn}.whatsapp-btn{color:#fff;cursor:pointer;background-color:#25d366;border:none;border-radius:32px;justify-content:center;align-items:center;gap:12px;width:100%;height:64px;margin-bottom:1.5rem;font-family:inherit;font-size:1.25rem;font-weight:800;text-decoration:none;transition:all .3s cubic-bezier(.16,1,.3,1);display:flex;box-shadow:0 10px 20px #25d3664d}.whatsapp-btn:hover{background-color:#22bf5b;transform:translateY(-4px);box-shadow:0 15px 30px #25d36666}.whatsapp-btn:active{transform:translateY(2px)scale(.98)}.whatsapp-icon{object-fit:contain;width:28px;height:28px}.reset-link{color:var(--card-muted);cursor:pointer;background:0 0;border:none;font-family:inherit;font-size:1rem;font-weight:600;text-decoration:underline;transition:color .2s}.reset-link:hover{color:var(--card-text)}.next-btn:not(:disabled):hover{transform:translateY(-4px);box-shadow:0 15px 30px #0003}.next-btn:not(:disabled):active{transform:translateY(2px)scale(.98);box-shadow:0 5px 10px #0000001a}.next-btn.outline{color:var(--accent);border:2px solid var(--accent);box-shadow:none;background-color:#0000}.next-btn.outline:hover{background-color:#f5f5f5}.success-card{text-align:center;justify-content:center;align-items:center}.success-icon{background-color:var(--accent);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:96px;height:96px;margin-bottom:2.5rem;font-size:3rem;animation:.8s cubic-bezier(.16,1,.3,1) bounceIn;display:flex;box-shadow:0 20px 40px #0003}.success-subtitle{color:var(--card-muted);margin-bottom:3rem;font-size:1.25rem;line-height:1.6}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes bounceIn{0%{opacity:0;transform:scale(.5)}60%{opacity:1;transform:scale(1.1)}to{opacity:1;transform:scale(1)}}