.login-container{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{background:var(--card-bg);padding:40px;border-radius:12px;box-shadow:var(--shadow-lg);width:100%;max-width:400px}.login-card h1{text-align:center;margin-bottom:32px;color:var(--text-color);font-size:28px}.login-card .form-group{margin-bottom:24px}.login-card label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-color)}.login-card input{width:100%;padding:12px;border:2px solid var(--border-color);border-radius:4px;font-size:16px;transition:border-color .2s ease;background-color:var(--input-bg);color:var(--text-color)}.login-card input:focus{outline:none;border-color:var(--primary-color)}.login-card button{width:100%}.item-list{list-style:none;padding:0;margin:0}.item-list-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;margin-bottom:4px;background:var(--card-bg);border:1px solid var(--border-color);border-radius:6px;transition:all .2s ease}.item-list-item:hover{box-shadow:var(--shadow);border-color:var(--primary-color)}.item-name{flex:1;font-size:16px;color:var(--text-color);word-break:break-word;cursor:pointer;padding:4px 6px;border-radius:4px;transition:background-color .2s ease}.item-name:hover{background-color:var(--hover-bg, rgba(0, 0, 0, .05))}.item-edit-input{flex:1;font-size:16px;padding:6px 10px;border:2px solid var(--primary-color);border-radius:6px;background:var(--input-bg);color:var(--text-color);outline:none;margin-right:6px}.item-edit-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(var(--primary-color-rgb, 0, 120, 255),.1)}.btn-edit{background-color:var(--primary-color);color:#fff;width:36px;height:36px;border-radius:50%;padding:0;font-size:16px;line-height:1;flex-shrink:0;margin-left:6px}.btn-edit:hover{background-color:var(--primary-dark);transform:scale(1.1)}.btn-edit:active{transform:scale(.95)}.btn-save{background-color:var(--success-color, #28a745);color:#fff;width:36px;height:36px;border-radius:50%;padding:0;font-size:18px;line-height:1;flex-shrink:0;margin-left:6px}.btn-save:hover{background-color:var(--success-dark, #218838);transform:scale(1.1)}.btn-save:active{transform:scale(.95)}.btn-cancel{background-color:var(--secondary-color, #6c757d);color:#fff;width:36px;height:36px;border-radius:50%;padding:0;font-size:18px;line-height:1;flex-shrink:0;margin-left:6px}.btn-cancel:hover{background-color:var(--secondary-dark, #5a6268);transform:scale(1.1)}.btn-cancel:active{transform:scale(.95)}.btn-delete{background-color:var(--danger-color);color:#fff;width:36px;height:36px;border-radius:50%;padding:0;font-size:22px;line-height:1;flex-shrink:0;margin-left:6px}.btn-delete:hover{background-color:var(--danger-dark);transform:scale(1.1)}.btn-delete:active{transform:scale(.95)}.add-item-form{background:var(--card-bg);padding:24px;border-radius:8px;border:2px solid var(--primary-color);box-shadow:var(--shadow-lg)}.add-item-form h2{margin-bottom:20px;color:var(--text-color);font-size:22px;text-align:center}.add-item-form .form-group{margin-bottom:20px}.add-item-form label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-color)}.add-item-form input{width:100%;padding:12px;border:2px solid var(--border-color);border-radius:4px;font-size:16px;transition:border-color .2s ease;background-color:var(--input-bg);color:var(--text-color)}.add-item-form input:focus{outline:none;border-color:var(--primary-color)}.form-actions{display:flex;gap:12px}.form-actions button{flex:1}@media (max-width: 600px){.form-actions{flex-direction:column}.form-actions button{width:100%}}.theme-toggle{background:#fff3;border:1px solid rgba(255,255,255,.3);padding:4px;border-radius:50%;width:28px;height:28px;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.theme-toggle:hover{background:#ffffff4d;transform:scale(1.05);box-shadow:0 2px 8px #0003}.theme-toggle:active{transform:scale(.95)}.theme-icon{font-size:14px;line-height:1;display:flex;align-items:center;justify-content:center}.app-container{display:flex;flex-direction:column;min-height:100vh;width:100%;background:var(--card-bg)}.app-header{background-color:var(--primary-color);color:#fff;padding:6px 10px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10;box-shadow:var(--shadow);min-height:40px}.app-header h1{font-size:16px;font-weight:500;margin:0;flex:1;text-align:center}.app-content{flex:1;padding:12px 16px;overflow-y:auto}.app-footer{display:flex;gap:8px;padding:16px;background:var(--card-bg);border-top:1px solid var(--border-color);position:sticky;bottom:0;box-shadow:0 -2px 4px #0000001a}.app-footer button{flex:1;padding:12px 8px;font-size:14px}.empty-state{text-align:center;padding:40px 20px;color:#999;font-size:16px}@media (max-width: 600px){.app-footer{flex-direction:column}.app-footer button{width:100%}.app-footer button .icon{margin-right:4px}}@media (min-width: 601px){.app-footer{justify-content:center}.app-footer button{flex:0 1 auto;min-width:150px}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #2196F3;--primary-dark: #1976D2;--danger-color: #f44336;--danger-dark: #d32f2f;--success-color: #4CAF50;--bg-color: #f5f5f5;--card-bg: #ffffff;--text-color: #333333;--text-secondary: #666666;--border-color: #e0e0e0;--shadow: 0 2px 4px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 8px rgba(0, 0, 0, .15);--error-bg: #ffebee;--input-bg: #ffffff}[data-theme=dark]{--bg-color: #121212;--card-bg: #1e1e1e;--text-color: #e0e0e0;--text-secondary: #b0b0b0;--border-color: #333333;--shadow: 0 2px 4px rgba(0, 0, 0, .3);--shadow-lg: 0 4px 8px rgba(0, 0, 0, .5);--error-bg: #3d1f1f;--input-bg: #2a2a2a}body{font-family:-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;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s ease,color .3s ease}#root{min-height:100vh;display:flex;flex-direction:column}button{font-family:inherit;cursor:pointer;border:none;border-radius:4px;padding:12px 24px;font-size:16px;font-weight:500;transition:all .2s ease;display:inline-flex;align-items:center;gap:8px;justify-content:center}button:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-dark);box-shadow:var(--shadow)}.btn-secondary{background-color:#757575;color:#fff}.btn-secondary:hover:not(:disabled){background-color:#616161;box-shadow:var(--shadow)}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-danger:hover:not(:disabled){background-color:var(--danger-dark);box-shadow:var(--shadow)}.error-message{background-color:var(--error-bg);color:var(--danger-color);padding:12px;border-radius:4px;margin-bottom:16px;border-left:4px solid var(--danger-color)}.loading-container{display:flex;justify-content:center;align-items:center;min-height:100vh}.loading{text-align:center;color:var(--primary-color);font-size:18px}.icon{font-size:20px;line-height:1}