*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--color-primary: #0D7377;--color-primary-light: #E6F4F5;--color-danger: #D93F0B;--color-success: #0E8A16;--color-text: #1A1A2E;--color-muted: #555555;--color-border: #CCCCCC;--color-bg: #FFFFFF;--radius: 8px;--shadow: 0 2px 8px rgba(0,0,0,.08);--max-width: 640px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:16px;color:var(--color-text);background:#f8f9fa;min-height:100vh}#app{min-height:100vh}.container{max-width:var(--max-width);margin:0 auto;padding:1rem}.card{background:var(--color-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.5rem;margin-bottom:1rem}.btn{display:inline-block;padding:.6rem 1.2rem;border-radius:var(--radius);border:none;cursor:pointer;font-size:.95rem;font-weight:500;transition:opacity .15s}.btn:hover{opacity:.85}.btn-primary{background:var(--color-primary);color:#fff}.btn-danger{background:var(--color-danger);color:#fff}.btn-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text)}.btn:disabled{opacity:.5;cursor:not-allowed}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.35rem;color:var(--color-muted)}.form-group input,.form-group select{width:100%;padding:.55rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem;color:var(--color-text);background:var(--color-bg)}.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-light)}.error-msg{color:var(--color-danger);font-size:.875rem;margin-top:.35rem}.success-msg{color:var(--color-success);font-size:.875rem;margin-top:.35rem}.badge{display:inline-block;padding:.2rem .6rem;border-radius:99px;font-size:.75rem;font-weight:600}.badge-draft{background:#e4e669;color:#333}.badge-finalized{background:var(--color-success);color:#fff}.badge-expired{background:var(--color-danger);color:#fff}header.app-header{background:var(--color-primary);color:#fff;padding:1rem;text-align:center}header.app-header h1{font-size:1.4rem;font-weight:700}header.app-header p{font-size:.85rem;opacity:.85}.participant-row,.item-row{display:flex;align-items:center;justify-content:space-between;padding:.5rem 0;border-bottom:1px solid var(--color-border)}.total-row{display:flex;align-items:center;justify-content:space-between;padding:.75rem 0;font-weight:600;border-top:2px solid var(--color-primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;z-index:100}.modal{background:var(--color-bg);border-radius:var(--radius);padding:1.5rem;width:min(90vw,400px);box-shadow:0 8px 32px #0003}.modal h2{margin-bottom:1rem}