*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--blue: #005291;--blue-hover: #0066b3;--blue-light: #e8f0fb;--bg: #f0f2f5;--card-bg: #ffffff;--text: #1a1a2e;--text-muted: #6b7280;--border: #e2e8f0;--success: #16a34a;--success-bg: #f0fdf4;--success-border:#bbf7d0;--error: #dc2626;--error-bg: #fef2f2;--error-border: #fecaca;--radius: 12px;--radius-sm: 8px;--shadow: 0 4px 24px rgba(0,0,0,.1)}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.5}.page-center{min-height:100vh;display:flex;align-items:flex-start;justify-content:center;padding:32px 16px 48px}.card{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:40px 36px;width:100%;max-width:480px;text-align:center}.card-wide{max-width:600px;text-align:left}.card-icon{font-size:3rem;line-height:1;margin-bottom:16px;display:block}.success-icon{font-size:3.5rem}.card-title{font-size:1.6rem;font-weight:700;color:var(--blue);margin-bottom:8px;letter-spacing:-.02em}.card-wide .card-title{text-align:center}.card-subtitle{font-size:.95rem;color:var(--text-muted);margin-bottom:28px}.card-wide .card-subtitle{text-align:center}.form{display:flex;flex-direction:column;gap:20px}.field{display:flex;flex-direction:column;gap:6px}.label{font-size:.875rem;font-weight:600;color:var(--text)}.input{width:100%;padding:10px 14px;font-size:.95rem;border:1.5px solid var(--border);border-radius:var(--radius-sm);outline:none;background:#fafafa;color:var(--text);transition:border-color .15s,box-shadow .15s;font-family:inherit}.input:focus{border-color:var(--blue);box-shadow:0 0 0 3px #0052911f;background:#fff}.input-error{border-color:var(--error)}.input-error:focus{box-shadow:0 0 0 3px #dc26261f}.input-code{font-family:Courier New,Courier,monospace;font-size:1.2rem;letter-spacing:.15em;text-align:center;text-transform:uppercase}select.input{cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center;padding-right:36px}.radio-group{display:flex;flex-direction:column;gap:10px}.radio-option{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border:1.5px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s;background:#fafafa}.radio-option:hover{border-color:var(--blue);background:var(--blue-light)}.radio-option.selected{border-color:var(--blue);background:var(--blue-light);box-shadow:0 0 0 3px #0052911a}.radio-option input[type=radio]{margin-top:3px;accent-color:var(--blue);width:16px;height:16px;flex-shrink:0;cursor:pointer}.radio-icon{font-size:1.4rem;flex-shrink:0;line-height:1;margin-top:1px}.radio-text{display:flex;flex-direction:column;gap:2px}.radio-label{font-size:.95rem;font-weight:600;color:var(--text)}.radio-desc{font-size:.82rem;color:var(--text-muted);line-height:1.4}.sub-field{padding:14px 16px;background:#f0f4ff;border-radius:var(--radius-sm);border:1.5px dashed var(--blue);display:flex;flex-direction:column;gap:6px;margin-top:-4px}.sub-field .label{color:var(--blue)}.btn{padding:12px 24px;font-size:.95rem;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:background .15s,transform .1s,box-shadow .15s;font-family:inherit}.btn:active{transform:scale(.98)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.btn-primary{background:var(--blue);color:#fff;box-shadow:0 2px 8px #00529140;width:100%}.btn-primary:hover:not(:disabled){background:var(--blue-hover);box-shadow:0 4px 12px #00529159}.btn-secondary{background:transparent;color:var(--blue);border:1.5px solid var(--blue);width:100%}.btn-secondary:hover:not(:disabled){background:var(--blue-light)}.btn-outline-sm{background:transparent;color:var(--blue);border:1.5px solid var(--blue);padding:6px 14px;font-size:.82rem;border-radius:var(--radius-sm);font-weight:600;cursor:pointer;font-family:inherit;white-space:nowrap;transition:background .15s}.btn-outline-sm:hover{background:var(--blue-light)}.link-btn{background:none;border:none;color:var(--blue);cursor:pointer;text-decoration:underline;font-size:inherit;font-family:inherit;padding:0}.success-msg{font-size:.85rem;color:#1a6b3c;background:#e6f4ec;border:1px solid #a3d4b5;border-radius:var(--radius-sm);padding:8px 12px;text-align:left}.error-msg{font-size:.85rem;color:var(--error);background:var(--error-bg);border:1px solid var(--error-border);border-radius:var(--radius-sm);padding:8px 12px;text-align:left}.success-detail{background:var(--success-bg);border:1.5px solid var(--success-border);border-radius:var(--radius-sm);padding:14px 18px;margin-bottom:20px;text-align:left}.success-detail p{font-size:.95rem;color:#15803d;line-height:1.6}.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--blue);border-radius:50%;animation:spin .7s linear infinite;margin:16px auto 0}@keyframes spin{to{transform:rotate(360deg)}}.admin-shell{min-height:100vh;display:flex;flex-direction:column;background:var(--bg)}.admin-header{background:var(--blue);color:#fff;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;box-shadow:0 2px 8px #00000026;flex-wrap:wrap}.admin-header-left{display:flex;align-items:center;gap:12px}.admin-logo{font-size:1.6rem;line-height:1}.admin-title{font-size:1.1rem;font-weight:700;color:#fff}.admin-subtitle{font-size:.75rem;color:#ffffffa6;display:block}.admin-header-right{display:flex;align-items:center;gap:12px}.admin-stats{font-size:.85rem;font-weight:600;background:#ffffff26;padding:4px 10px;border-radius:20px;color:#fff}.admin-header .btn-outline-sm{color:#fff;border-color:#fff9}.admin-header .btn-outline-sm:hover{background:#ffffff26}.admin-main{flex:1;padding:24px;max-width:860px;width:100%;margin:0 auto}.admin-loading,.admin-empty{text-align:center;padding:48px 24px;color:var(--text-muted)}.admin-empty code{background:var(--border);padding:2px 6px;border-radius:4px;font-size:.88rem}.admin-toolbar{display:flex;gap:10px;margin-bottom:16px;flex-wrap:wrap}.invitation-list{display:flex;flex-direction:column;gap:8px}.invitation-card{background:var(--card-bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:border-color .15s}.invitation-card:hover{border-color:#c7d7ee}.inv-row{display:flex;align-items:center;gap:12px;padding:12px 16px;flex-wrap:wrap}.inv-info{flex:1;min-width:0;display:flex;flex-direction:column}.inv-name{font-weight:600;font-size:.95rem;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.inv-email{font-size:.8rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.inv-meta{display:flex;align-items:center;gap:8px;flex-shrink:0}.inv-code{font-family:Courier New,Courier,monospace;font-size:.88rem;font-weight:700;background:#f0f4ff;color:var(--blue);padding:3px 8px;border-radius:4px;letter-spacing:.08em}.badge{font-size:.75rem;font-weight:600;padding:3px 8px;border-radius:20px;white-space:nowrap}.badge-done{background:var(--success-bg);color:var(--success);border:1px solid var(--success-border)}.badge-pending{background:#fef9ec;color:#92400e;border:1px solid #fde68a}.inv-actions{display:flex;gap:6px;flex-shrink:0}.action-btn{width:34px;height:34px;border:1.5px solid var(--border);border-radius:var(--radius-sm);background:#fafafa;cursor:pointer;font-size:1rem;display:flex;align-items:center;justify-content:center;transition:background .15s,border-color .15s}.action-btn:hover,.action-btn.active{background:var(--blue-light);border-color:var(--blue)}.inv-submission{padding:6px 16px 10px;font-size:.82rem;color:var(--success);font-weight:500;border-top:1px solid var(--success-border);background:var(--success-bg)}.inv-email-panel{border-top:1.5px solid var(--border);background:#f8fafc}.email-panel-header{display:flex;align-items:center;justify-content:space-between;padding:10px 16px 8px;gap:12px}.email-panel-label{font-size:.8rem;font-weight:600;color:var(--text-muted)}.email-preview{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:.875rem;line-height:1.7;color:var(--text);padding:0 16px 16px;white-space:pre-wrap;word-break:break-word}.backend-status{display:flex;align-items:center;justify-content:center;gap:7px;margin-top:20px;padding-top:16px;border-top:1px solid var(--border);font-size:.78rem;font-weight:500}.backend-status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}.backend-status--checking .backend-status-dot{background:#9ca3af;animation:pulse-grey 1.4s ease-in-out infinite}.backend-status--checking .backend-status-label{color:#9ca3af}.backend-status--ok .backend-status-dot{background:var(--success)}.backend-status--ok .backend-status-label{color:var(--success)}.backend-status--error .backend-status-dot{background:var(--error)}.backend-status--error .backend-status-label{color:var(--error)}@keyframes pulse-grey{0%,to{opacity:1}50%{opacity:.35}}@media (max-width: 520px){.card,.card-wide{padding:28px 20px}.card-title{font-size:1.4rem}.radio-option{padding:12px 14px}.admin-main{padding:16px}.inv-row{gap:8px}.inv-meta{flex-wrap:wrap}}