:root{--portal-primary: #0891b2;--portal-primary-dark: #0e7490;--portal-bg: #f8fafc;--portal-card-bg: #ffffff;--portal-text: #1f2937;--portal-text-light: #6b7280;--portal-success: #10b981;--portal-error: #ef4444;--portal-border: #e5e7eb}.participant-portal{min-height:100vh;background:var(--portal-bg);display:flex;align-items:center;justify-content:center;padding:20px;margin:0}.portal-container{width:100%;max-width:420px}.portal-card{background:var(--portal-card-bg);border-radius:16px;padding:40px 35px;box-shadow:0 4px 20px #00000014;border:1px solid var(--portal-border)}.welcome-section{text-align:center;margin-bottom:35px}.welcome-icon{font-size:48px;margin-bottom:15px}.welcome-logo{width:80px;height:80px;object-fit:contain;margin-bottom:16px}.welcome-section h1{font-size:26px;color:var(--portal-text);margin:0 0 8px;font-weight:700}.welcome-message{color:var(--portal-text-light);font-size:15px;margin:0}.portal-card .form-group{margin-bottom:22px}.portal-card .form-group label{display:block;font-size:14px;font-weight:600;color:var(--portal-text);margin-bottom:8px}.portal-card .form-group input{width:100%;padding:14px 16px;border:2px solid var(--portal-border);border-radius:12px;font-size:15px;transition:border-color .2s,box-shadow .2s;box-sizing:border-box}.portal-card .form-group input:focus{outline:none;border-color:var(--portal-primary);box-shadow:0 0 0 4px #0891b21f}.portal-card .form-group input::placeholder{color:#b2bec3}.portal-card .helper-text{font-size:12px;color:var(--portal-text-light);margin-top:6px;margin-bottom:0}.btn-participant{width:100%;padding:15px 20px;background:var(--portal-primary);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:background .2s,transform .2s,box-shadow .2s;margin-top:10px}.btn-participant:hover{background:var(--portal-primary-dark);transform:translateY(-1px);box-shadow:0 4px 12px #0891b240}.btn-participant:active{transform:translateY(0)}.btn-participant:disabled{opacity:.7;cursor:not-allowed;transform:none;box-shadow:none}.portal-footer{margin-top:30px;padding-top:25px;border-top:1px solid var(--portal-border);text-align:center}.portal-footer p{color:var(--portal-text-light);font-size:14px;margin:0}.portal-footer a{color:var(--portal-primary);text-decoration:none;font-weight:600}.portal-footer a:hover{text-decoration:underline}.test-info{margin-top:15px;padding:12px;background:#f8f9fa;border-radius:8px;font-size:12px;color:var(--portal-text-light);line-height:1.6}.portal-card .error-message{background:#fdf2f2;border:1px solid #f5c6cb;color:#721c24;padding:12px 15px;border-radius:10px;margin-bottom:20px;font-size:14px;display:none}.portal-card .error-message:not(:empty){display:block}.portal-card .success-message{background:#d4edda;border:1px solid #c3e6cb;color:#155724;padding:12px 15px;border-radius:10px;margin-bottom:20px;font-size:14px;display:none}.portal-card .success-message:not(:empty){display:block}@media (max-width: 480px){.portal-card{padding:30px 25px;border-radius:16px}.welcome-section h1{font-size:22px}.welcome-icon{font-size:40px}}@media (max-width: 380px){.participant-portal{padding:15px}.portal-card{padding:25px 18px;border-radius:14px}.welcome-section h1{font-size:20px}.welcome-icon{font-size:36px}.btn-participant{padding:14px 18px;font-size:15px}.portal-card .form-group input{padding:12px 14px}}@media (max-width: 320px){.participant-portal{padding:10px}.portal-container{width:100%}.portal-card{padding:20px 15px}.welcome-section{margin-bottom:25px}.welcome-section h1{font-size:18px}.welcome-icon{font-size:32px;margin-bottom:10px}.portal-footer{margin-top:20px;padding-top:20px}}