.navigation{background:linear-gradient(135deg,#1e293b,#334155);color:#fff;box-shadow:0 4px 16px #0000001a;position:sticky;top:0;z-index:1000;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.nav-container{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between;align-items:center;height:68px}.nav-brand a{color:#fff;text-decoration:none;font-size:22px;font-weight:700;letter-spacing:-.02em;transition:all .2s ease}.nav-brand a:hover{color:#10b981;transform:translateY(-1px)}.nav-menu{display:flex;align-items:center;gap:8px}.nav-link{color:#fff;text-decoration:none;font-size:15px;font-weight:500;padding:10px 18px;border-radius:8px;transition:all .2s ease;letter-spacing:-.01em}.nav-link:hover{background-color:#ffffff26;transform:translateY(-1px)}.nav-user{display:flex;align-items:center;gap:16px;margin-left:12px}.user-info{font-size:14px;font-weight:500;color:#e2e8f0;padding:8px 16px;background-color:#ffffff1a;border-radius:8px;letter-spacing:-.01em}.btn-logout{background:linear-gradient(135deg,#ef4444,#dc2626);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;transition:all .2s ease;box-shadow:0 2px 8px #ef44444d;letter-spacing:-.01em}.btn-logout:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ef444466}.btn-logout:active{transform:translateY(0)}@media (max-width: 768px){.nav-container{flex-direction:column;height:auto;padding:20px 24px;gap:16px}.nav-brand a{font-size:20px}.nav-menu{flex-wrap:wrap;justify-content:center;gap:8px}.nav-link{font-size:14px;padding:8px 14px}.nav-user{flex-direction:column;gap:12px;margin-left:0}.user-info{text-align:center;font-size:13px}.btn-logout{font-size:13px;padding:8px 16px}}.status-message{border-radius:8px;padding:14px 18px;margin-bottom:20px;animation:slideInDown .4s ease;border:1.5px solid;box-shadow:0 2px 8px #00000014}@keyframes slideInDown{0%{opacity:0;transform:translateY(-15px)}to{opacity:1;transform:translateY(0)}}.status-message.success{background:linear-gradient(135deg,#d1fae5,#a7f3d0);color:#065f46;border-color:#10b981}.status-message.error{background:linear-gradient(135deg,#fee2e2,#fecaca);color:#991b1b;border-color:#ef4444}.status-message.info{background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:#1e40af;border-color:#3b82f6}.status-container{display:flex;align-items:center;gap:10px}.status-icon{font-size:16px;font-weight:700;display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;flex-shrink:0}.status-message.success .status-icon{background-color:#10b981;color:#fff}.status-message.error .status-icon{background-color:#ef4444;color:#fff}.status-message.info .status-icon{background-color:#3b82f6;color:#fff}.status-text{flex-grow:1;min-width:0}.close-button{background:none;border:none;font-size:24px;line-height:1;cursor:pointer;color:inherit;opacity:.5;transition:opacity .2s ease;padding:0;width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;flex-shrink:0;margin-left:auto}.close-button:hover{opacity:1;background-color:#00000014}.status-text p{margin:0;font-size:15px;font-weight:500;line-height:1.4;display:inline}.status-text h3{display:inline;margin:0 8px 0 0;font-size:15px;font-weight:700;letter-spacing:-.01em}.status-data{margin-top:8px;padding:12px 16px;background-color:#ffffff80;border-radius:8px;font-size:13px;display:block}.status-data p{margin:4px 0;font-weight:600;display:block}.status-errors{margin-top:12px;padding:12px 16px;background-color:#0000000d;border-radius:8px;display:block}.status-errors h4{margin:0 0 8px;font-size:14px;font-weight:700}.status-errors ul{margin:0;padding-left:20px}.status-errors li{margin:4px 0;font-size:13px;font-weight:500}.retry-button{margin-top:12px;padding:10px 18px;background-color:#0000001a;border:1.5px solid rgba(0,0,0,.2);border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease;color:inherit;display:block}.retry-button:hover{background-color:#00000026;transform:translateY(-1px)}.registration-form-container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#f8f9fa,#e9ecef)}.registration-form-card{background:#fff;padding:48px;border-radius:16px;box-shadow:0 10px 40px #00000014;max-width:480px;width:100%;animation:slideUp .4s ease}.registration-form-card h2{text-align:center;margin-bottom:32px;color:#1a1a1a;font-size:32px;font-weight:700;letter-spacing:-.03em}.registration-form{display:flex;flex-direction:column;gap:24px}@media (max-width: 600px){.registration-form-card{padding:32px 24px}.registration-form-card h2{font-size:26px}.registration-form{gap:20px}}.login-form-container{display:flex;justify-content:center;align-items:center;min-height:100vh;padding:20px;background:linear-gradient(135deg,#f8f9fa,#e9ecef)}.login-form-card{background:#fff;padding:48px;border-radius:16px;box-shadow:0 10px 40px #00000014;max-width:440px;width:100%;animation:slideUp .4s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.login-form-card h2{text-align:center;margin-bottom:32px;color:#1a1a1a;font-size:32px;font-weight:700;letter-spacing:-.03em}.login-form{display:flex;flex-direction:column;gap:24px}.form-footer{text-align:center;margin-top:24px;padding-top:24px;border-top:1.5px solid #f3f4f6;color:#6b7280;font-size:15px}@media (max-width: 600px){.login-form-card{padding:32px 24px}.login-form-card h2{font-size:26px}.login-form{gap:20px}}.reading-form{background:#fff;border-radius:12px;padding:0}.reading-form h2{color:#1a1a1a;font-size:24px;font-weight:700;margin-bottom:24px;letter-spacing:-.02em;padding-bottom:16px;border-bottom:2px solid #f3f4f6}.reading-form form{display:flex;flex-direction:column;gap:20px}.warning-banner{padding:16px 20px;background:linear-gradient(135deg,#fef3c7,#fde68a);border:1.5px solid #f59e0b;border-radius:10px;margin-bottom:24px;color:#92400e;font-size:14px;line-height:1.6;box-shadow:0 2px 8px #f59e0b26}.warning-banner strong{font-weight:700;color:#78350f;display:block;margin-bottom:4px}.reading-form form{display:grid;gap:20px}.reading-form .form-group input[type=date]{font-weight:500;color:#374151}.reading-form .form-group input[type=number]{font-variant-numeric:tabular-nums;letter-spacing:.02em}.reading-form .form-group label{display:flex;align-items:center;gap:6px}.reading-form .form-group label:before{content:"•";color:#10b981;font-size:20px;line-height:1}.reading-form button[type=submit]{margin-top:8px;width:100%;font-size:16px;padding:16px 24px;border-radius:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}@media (max-width: 600px){.reading-form h2{font-size:20px}.reading-form form{gap:16px}.reading-form button[type=submit]{font-size:15px;padding:14px 20px}.warning-banner{padding:14px 16px;font-size:13px}}.reading-form{animation:fadeInUp .4s ease}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal-content{background:#fff;border-radius:16px;padding:32px;max-width:500px;width:90%;box-shadow:0 20px 60px #0000004d;animation:slideInUp .3s ease}.modal-content h3{color:#dc2626;font-size:22px;font-weight:700;margin:0 0 20px;display:flex;align-items:center;gap:10px}.modal-content h3:before{content:"⚠️";font-size:24px}.modal-content p{color:#374151;font-size:15px;line-height:1.6;margin:0 0 16px}.existing-readings{background:#f9fafb;border:1px solid #e5e7eb;border-radius:10px;padding:16px;margin:16px 0}.existing-readings p{margin:8px 0;font-size:14px;color:#1f2937}.existing-readings strong{color:#111827;font-weight:600;display:inline-block;min-width:60px}.warning-text{color:#dc2626!important;font-weight:600;background:#fef2f2;border-left:3px solid #dc2626;padding:12px 16px;border-radius:6px;margin:16px 0 24px!important}.modal-actions{display:flex;gap:12px;justify-content:flex-end;margin-top:24px}.modal-actions button{padding:12px 24px;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;border:none}.btn-cancel{background:#f3f4f6;color:#374151}.btn-cancel:hover:not(:disabled){background:#e5e7eb;transform:translateY(-1px)}.btn-confirm{background:#dc2626;color:#fff}.btn-confirm:hover:not(:disabled){background:#b91c1c;transform:translateY(-1px);box-shadow:0 4px 12px #dc26264d}.modal-actions button:disabled{opacity:.6;cursor:not-allowed}@keyframes slideInUp{0%{opacity:0;transform:translateY(30px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@media (max-width: 600px){.modal-content{padding:24px;width:95%}.modal-content h3{font-size:20px}.modal-actions{flex-direction:column}.modal-actions button{width:100%}}.reading-history{margin-top:0;animation:fadeIn .4s ease}.reading-history h3{color:#1a1a1a;margin-bottom:24px;font-size:24px;font-weight:700;letter-spacing:-.02em;padding-bottom:16px;border-bottom:2px solid #f3f4f6}.loading-text,.empty-text{padding:32px;text-align:center;color:#6b7280;font-size:15px;font-weight:500;background-color:#f9fafb;border-radius:10px;border:1.5px dashed #e5e7eb}.table-container{overflow-x:auto;background:#fff;border-radius:12px;border:1.5px solid #f3f4f6}.readings-table tbody tr:last-child td{border-bottom:none}@media (max-width: 768px){.readings-table th,.readings-table td{padding:12px 10px;font-size:13px}.readings-table th{font-size:12px}.reading-history h3{font-size:20px;margin-bottom:20px}.loading-text,.empty-text{padding:24px;font-size:14px}}.dashboard{min-height:100vh;background:linear-gradient(135deg,#f8f9fa,#e9ecef);padding:24px}.dashboard-container{max-width:1200px;margin:0 auto;animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.dashboard-header{background:#fff;padding:36px;border-radius:16px;box-shadow:0 4px 16px #0000000f;margin-bottom:32px}.dashboard-header h1{color:#1a1a1a;margin-bottom:24px;font-size:36px;font-weight:700;letter-spacing:-.03em}.user-details{display:flex;gap:32px;flex-wrap:wrap}.user-details p{margin:0;color:#6b7280;font-size:15px;font-weight:500}.user-details strong{color:#1a1a1a;font-weight:600}.status-active{color:#10b981;font-weight:700;padding:4px 12px;background-color:#d1fae5;border-radius:6px;font-size:14px}.status-inactive{color:#f59e0b;font-weight:700;padding:4px 12px;background-color:#fef3c7;border-radius:6px;font-size:14px}.dashboard-content{display:grid;grid-template-columns:1fr;gap:32px}.reading-form-section,.reading-history-section{background:#fff;padding:36px;border-radius:16px;box-shadow:0 4px 16px #0000000f;transition:transform .2s ease,box-shadow .2s ease}.reading-form-section:hover,.reading-history-section:hover{transform:translateY(-2px);box-shadow:0 8px 24px #00000014}@media (max-width: 768px){.dashboard{padding:16px}.dashboard-header{padding:24px}.dashboard-header h1{font-size:28px}.user-details{gap:20px}.user-details p{font-size:14px}.reading-form-section,.reading-history-section{padding:24px}}.admin-panel{min-height:100vh;background:linear-gradient(135deg,#f8f9fa,#e9ecef);padding:24px}.admin-container{max-width:1200px;margin:0 auto;background:#fff;border-radius:16px;padding:36px;box-shadow:0 4px 16px #0000000f;animation:fadeIn .4s ease}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.admin-container h1{margin-top:0;color:#1a1a1a;border-bottom:3px solid #10b981;padding-bottom:16px;font-size:36px;font-weight:700;letter-spacing:-.03em}.tabs{display:flex;gap:12px;margin-top:24px;border-bottom:2px solid #e5e7eb}.tab{background:none;border:none;padding:12px 24px;font-size:16px;font-weight:600;color:#6b7280;cursor:pointer;border-bottom:3px solid transparent;transition:all .2s ease;position:relative;bottom:-2px}.tab:hover{color:#374151}.tab.active{color:#10b981;border-bottom-color:#10b981}.panel-section{margin-top:36px}.panel-section h2{color:#374151;font-size:24px;font-weight:700;margin-bottom:24px;letter-spacing:-.02em}.filters{display:flex;gap:16px;align-items:center;margin-bottom:24px;padding:20px;background:linear-gradient(135deg,#f9fafb,#f3f4f6);border-radius:12px;flex-wrap:wrap}.filter-checkbox{display:flex;align-items:center;gap:8px;font-weight:500;color:#374151;cursor:pointer}.filter-checkbox input[type=checkbox]{width:18px;height:18px;cursor:pointer;accent-color:#10b981}.filter-selects{display:flex;gap:12px;flex:1}.filter-select{padding:10px 16px;border:1.5px solid #e5e7eb;border-radius:8px;font-size:15px;font-weight:500;color:#374151;background:#fff;cursor:pointer;transition:all .2s ease}.filter-select:hover{border-color:#10b981}.filter-select:focus{outline:none;border-color:#10b981;box-shadow:0 0 0 3px #10b9811a}.btn-export{background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;padding:10px 20px;border-radius:8px;cursor:pointer;font-size:15px;font-weight:600;transition:all .2s ease;box-shadow:0 2px 8px #3b82f64d;margin-left:auto}.btn-export:hover{transform:translateY(-2px);box-shadow:0 4px 12px #3b82f666}.btn-export:active{transform:translateY(0);box-shadow:0 2px 6px #3b82f64d}.alert{padding:16px 20px;border-radius:10px;margin-bottom:24px;font-weight:500;font-size:15px;border:1.5px solid;animation:slideIn .3s ease}.alert-success{background:linear-gradient(135deg,#d1fae5,#a7f3d0);border-color:#10b981;color:#065f46}.alert-error{background:linear-gradient(135deg,#fee2e2,#fecaca);border-color:#ef4444;color:#991b1b}.loading-text{color:#6b7280;text-align:center;padding:32px;font-weight:500;background-color:#f9fafb;border-radius:10px;border:1.5px dashed #e5e7eb}.empty-text{color:#9ca3af;text-align:center;padding:48px;font-size:16px;font-weight:500;background-color:#f9fafb;border-radius:10px;border:1.5px dashed #e5e7eb}.table-container{overflow-x:auto;border-radius:12px;border:1.5px solid #f3f4f6;margin-top:16px}.users-table{width:100%;border-collapse:collapse}.users-table thead{background:linear-gradient(135deg,#f9fafb,#f3f4f6)}.users-table th{padding:18px 20px;text-align:left;font-weight:700;color:#374151;border-bottom:2px solid #e5e7eb;font-size:14px;text-transform:uppercase;letter-spacing:.05em}.users-table td{padding:16px 20px;border-bottom:1px solid #f3f4f6;color:#1a1a1a;font-size:15px;font-weight:500}.users-table tbody tr{transition:all .2s ease}.users-table tbody tr:hover{background:linear-gradient(135deg,#f9fafb,#f0f9ff);transform:scale(1.01);box-shadow:0 2px 8px #0000000a}.users-table tbody tr:nth-child(2n){background-color:#fafbfc}.users-table tbody tr:nth-child(2n):hover{background:linear-gradient(135deg,#f9fafb,#f0f9ff)}.readings-table{width:100%;border-collapse:collapse}.readings-table thead{background:linear-gradient(135deg,#f9fafb,#f3f4f6)}.readings-table th{padding:18px 20px;text-align:left;font-weight:700;color:#374151;border-bottom:2px solid #e5e7eb;font-size:14px;text-transform:uppercase;letter-spacing:.05em}.readings-table td{padding:16px 20px;border-bottom:1px solid #f3f4f6;color:#1a1a1a;font-size:15px;font-weight:500}.readings-table tbody tr{transition:all .2s ease}.readings-table tbody tr:hover{background:linear-gradient(135deg,#f9fafb,#f0f9ff);transform:scale(1.01);box-shadow:0 2px 8px #0000000a}.readings-table tbody tr:nth-child(2n){background-color:#fafbfc}.readings-table tbody tr:nth-child(2n):hover{background:linear-gradient(135deg,#f9fafb,#f0f9ff)}.btn-activate{background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;padding:10px 18px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;transition:all .2s ease;box-shadow:0 2px 8px #10b9814d;letter-spacing:-.01em}.btn-activate:hover{transform:translateY(-2px);box-shadow:0 4px 12px #10b98166}.btn-activate:active{transform:translateY(0);box-shadow:0 2px 6px #10b9814d}@media (max-width: 768px){.admin-panel{padding:16px}.admin-container{padding:24px}.admin-container h1{font-size:28px}.tabs{gap:8px}.tab{padding:10px 16px;font-size:14px}.panel-section h2{font-size:20px}.filters{flex-direction:column;align-items:stretch;gap:12px}.filter-selects{flex-direction:column}.btn-export{margin-left:0;width:100%}.table-container{overflow-x:scroll}.users-table,.readings-table{font-size:14px}.users-table th,.users-table td,.readings-table th,.readings-table td{padding:12px 10px}.users-table th,.readings-table th{font-size:12px}.btn-activate{font-size:13px;padding:8px 14px}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#1a1a1a;line-height:1.6;background-color:#f8f9fa}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;letter-spacing:-.02em}.form-group{display:flex;flex-direction:column;gap:8px}.form-group label{font-weight:500;color:#374151;font-size:14px;letter-spacing:-.01em}.form-group input,.form-group select,.form-group textarea{padding:12px 16px;border:1.5px solid #e5e7eb;border-radius:8px;font-size:15px;font-family:Inter,sans-serif;transition:all .2s ease;background-color:#fff}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:#10b981;box-shadow:0 0 0 3px #10b9811a}.form-group input.error{border-color:#ef4444}.form-group input:disabled{background-color:#f9fafb;cursor:not-allowed;opacity:.6}.error-text{color:#ef4444;font-size:13px;margin-top:4px;font-weight:500}button{font-family:Inter,sans-serif;font-weight:600;letter-spacing:-.01em;cursor:pointer;transition:all .2s ease}button[type=submit],.btn-primary{padding:14px 24px;background:linear-gradient(135deg,#10b981,#059669);color:#fff;border:none;border-radius:10px;font-size:16px;font-weight:600;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);box-shadow:0 4px 12px #10b9814d;position:relative;overflow:hidden}button[type=submit]:before,.btn-primary:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,rgba(255,255,255,.2) 0%,transparent 100%);opacity:0;transition:opacity .3s ease}button[type=submit]:hover:not(:disabled),.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #10b98166}button[type=submit]:hover:not(:disabled):before,.btn-primary:hover:not(:disabled):before{opacity:1}button[type=submit]:active:not(:disabled),.btn-primary:active:not(:disabled){transform:translateY(0);box-shadow:0 2px 8px #10b9814d}button[type=submit]:disabled,.btn-primary:disabled{background:linear-gradient(135deg,#d1d5db,#9ca3af);cursor:not-allowed;box-shadow:none;transform:none}.btn-secondary{padding:12px 20px;background:#fff;color:#374151;border:1.5px solid #e5e7eb;border-radius:8px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s ease}.btn-secondary:hover:not(:disabled){background-color:#f9fafb;border-color:#d1d5db;transform:translateY(-1px)}.status-message{padding:14px 18px;border-radius:10px;font-size:14px;font-weight:500;margin-bottom:20px;animation:slideIn .3s ease}@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.status-message.success{background-color:#d1fae5;color:#065f46;border:1.5px solid #10b981}.status-message.error{background-color:#fee2e2;color:#991b1b;border:1.5px solid #ef4444}a{color:#10b981;text-decoration:none;font-weight:500;transition:color .2s ease}a:hover{color:#059669;text-decoration:underline}
