:root{--bg: #ffffff;--color-text: #000000;--color-secondary: #555555;--color-muted: #999999;--color-border: #e0e0e0;--color-progress: #000000;--color-disabled: #cccccc;--font-family: system-ui, -apple-system, "Segoe UI", sans-serif;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.25rem;--font-size-xl: 1.75rem;--font-size-2xl: 2.5rem;--font-size-3xl: 3.5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2.5rem;--spacing-xl: 4rem;--max-width: 600px;--transition-fade: .3s ease;--border-radius: 2px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);font-size:var(--font-size-base);background:var(--bg);color:var(--color-text);line-height:1.6;-webkit-font-smoothing:antialiased}.app{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-lg)}.fade-wrapper{width:100%;max-width:var(--max-width);transition:opacity var(--transition-fade)}.fade-wrapper.fade-in{opacity:1}.fade-wrapper.fade-out{opacity:0}.screen-content{display:flex;flex-direction:column;gap:var(--spacing-lg)}.intro-title{font-size:var(--font-size-3xl);font-weight:300;letter-spacing:-.02em;line-height:1.1}.intro-description{color:var(--color-secondary);font-size:var(--font-size-lg);max-width:40ch;line-height:1.75}.step-counter{font-size:var(--font-size-sm);color:var(--color-muted);letter-spacing:.06em;text-transform:uppercase}.step-title{font-size:var(--font-size-2xl);font-weight:400;letter-spacing:-.01em;line-height:1.2}.step-description{color:var(--color-secondary);font-size:var(--font-size-lg);max-width:45ch;line-height:1.75}.btn-primary{display:inline-block;padding:.75rem 2rem;background:var(--color-text);color:var(--bg);border:none;border-radius:var(--border-radius);font-family:var(--font-family);font-size:var(--font-size-base);cursor:pointer;align-self:flex-start;transition:opacity .15s ease}.btn-primary:hover:not(:disabled){opacity:.7}.btn-primary:disabled{background:var(--color-disabled);cursor:not-allowed}.choice-group{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}.btn-choice{padding:.75rem 1.75rem;background:transparent;color:var(--color-text);border:1px solid var(--color-text);border-radius:var(--border-radius);font-family:var(--font-family);font-size:var(--font-size-base);cursor:pointer;transition:background .15s ease,color .15s ease}.btn-choice:hover{background:var(--color-text);color:var(--bg)}.camera-container{display:flex;flex-direction:column;align-items:center;gap:1.5rem;width:100%}.camera-feed{width:100%;max-width:400px;aspect-ratio:4 / 3;object-fit:cover;border-radius:4px;transform:scaleX(-1)}.input-group{display:flex;flex-direction:column;gap:var(--spacing-sm);align-items:flex-start}.text-input{width:100%;max-width:400px;padding:.75rem 0;background:transparent;border:none;border-bottom:1px solid var(--color-border);border-radius:0;font-family:var(--font-family);font-size:var(--font-size-lg);color:var(--color-text);outline:none;transition:border-color .15s ease}.text-input::placeholder{color:var(--color-muted)}.text-input:focus{border-bottom-color:var(--color-text)}.final-title{font-size:var(--font-size-2xl);font-weight:400;letter-spacing:-.01em}.final-subtitle{color:var(--color-secondary);font-size:var(--font-size-lg)}.progress-container{width:100%;height:1px;background:var(--color-border);overflow:hidden}.progress-bar{height:100%;background:var(--color-progress);transition:width .1s linear}.progress-value{font-size:var(--font-size-sm);color:var(--color-muted);font-variant-numeric:tabular-nums}.progress-message{color:var(--color-muted);font-size:var(--font-size-sm);letter-spacing:.02em;min-height:1.5em;animation:message-in .5s ease}@keyframes message-in{0%{opacity:0;transform:translateY(3px)}to{opacity:1;transform:translateY(0)}}