:root{--background-color: #f0f4f8;--card-background: #ffffff;--primary-text-color: #333333;--secondary-text-color: #555555;--accent-color: #4a90e2;--accent-hover-color: #357ABD;--error-color: #d9534f;--success-color: #28a745;--mood-sad: #f8d7da;--mood-neutral: #fff3cd;--mood-happy: #d4edda;--font-family: "Poppins", sans-serif;--card-shadow: 0 4px 15px rgba(0, 0, 0, .1);--border-radius: 12px}*{box-sizing:border-box;margin:0;padding:0}html,body{height:100%;font-family:var(--font-family);background-color:var(--background-color);color:var(--primary-text-color)}#root{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;min-height:100%;padding:1rem}.container,.received-message-container,.login-container{display:flex;flex-direction:column;align-items:center;text-align:center;width:100%;max-width:600px;padding-bottom:5rem}header{margin-bottom:1.5rem;width:100%;position:relative}header h1{font-size:2.2rem;font-weight:600;margin-bottom:.5rem;min-height:2.5rem}header p{font-size:1.1rem;color:var(--secondary-text-color)}.logout-button{position:absolute;top:0;right:0;background:#e9ecef;border:none;color:var(--secondary-text-color);padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-weight:600;font-family:var(--font-family);transition:background-color .2s}.logout-button:hover{background:#dde2e7}main{width:100%}.message-card{background-color:var(--card-background);border-radius:var(--border-radius);box-shadow:var(--card-shadow);padding:2rem;min-height:200px;width:100%;display:flex;align-items:center;justify-content:center;margin-bottom:2rem;transition:all .3s ease;position:relative}.message-text{font-size:1.2rem;line-height:1.6;color:var(--primary-text-color)}.placeholder{color:var(--secondary-text-color);font-style:italic;padding:1rem}.error{color:var(--error-color);font-weight:600}.generate-btn{background-color:var(--accent-color);color:#fff;border:none;border-radius:var(--border-radius);padding:1rem 2rem;font-size:1rem;font-weight:600;font-family:var(--font-family);cursor:pointer;transition:background-color .3s ease,transform .2s ease;box-shadow:0 2px 8px #0000001a;width:100%;max-width:400px}.generate-btn:hover:not(:disabled){background-color:var(--accent-hover-color);transform:translateY(-2px)}.generate-btn:disabled{background-color:#ccc;cursor:not-allowed}.card-actions{position:absolute;top:.5rem;right:.5rem;display:flex;flex-direction:column;gap:.25rem}.action-btn{background-color:transparent;border:none;padding:.5rem;border-radius:50%;cursor:pointer;color:var(--secondary-text-color);transition:background-color .2s ease,color .2s ease;display:flex;align-items:center;justify-content:center}.action-btn:hover{background-color:#e9ecef}.action-btn svg{stroke:var(--secondary-text-color);transition:stroke .2s}.copy-btn svg.check-icon{stroke:var(--success-color)}.navbar{display:flex;justify-content:center;gap:.25rem;margin-bottom:2rem;background-color:#e9ecef;padding:.5rem;border-radius:var(--border-radius);width:100%}.navbar button{background:transparent;border:none;padding:.5rem;font-family:var(--font-family);font-size:.8rem;font-weight:600;color:var(--secondary-text-color);border-radius:8px;cursor:pointer;transition:all .3s ease;flex-grow:1;white-space:nowrap;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:50px}.navbar button:hover{background-color:#dde2e7}.navbar button.active{background-color:var(--accent-color);color:#fff;box-shadow:0 2px 5px #0000001a}.navbar button.active svg{stroke:#fff}.favorites-container{width:100%;text-align:left}.favorites-container h2{text-align:center;margin-bottom:1.5rem}.favorites-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:1rem}.favorite-item{background-color:var(--card-background);padding:1rem 1.5rem;border-radius:var(--border-radius);box-shadow:0 2px 5px #0000000d;display:flex;justify-content:space-between;align-items:center;gap:1rem}.favorite-item p{flex-grow:1;line-height:1.5}.remove-btn:hover svg{stroke:var(--error-color)}.mood-tracker-container{width:100%;display:flex;flex-direction:column;gap:2.5rem}.mood-logger{background-color:var(--card-background);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--card-shadow)}.mood-logger h2{margin-bottom:1.5rem}.mood-buttons{display:flex;justify-content:center;gap:1rem}.mood-buttons button{background:transparent;border:none;font-size:3rem;cursor:pointer;transition:transform .2s ease,filter .2s ease}.mood-buttons button:hover{transform:scale(1.2)}.mood-buttons button:active{transform:scale(1.1)}.heatmap-container{text-align:center}.heatmap-container h3{text-transform:capitalize;margin-bottom:1rem;font-weight:600}.heatmap-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;max-width:400px;margin:0 auto}.heatmap-header{font-weight:600;font-size:.8rem;color:var(--secondary-text-color)}.heatmap-cell{width:100%;aspect-ratio:1 / 1;background-color:#e9ecef;border-radius:4px;display:flex;align-items:center;justify-content:center;font-size:.8rem;transition:all .2s ease}.heatmap-cell.empty{background-color:transparent}.heatmap-cell.filled[data-mood=sad]{background-color:var(--mood-sad)}.heatmap-cell.filled[data-mood=neutral]{background-color:var(--mood-neutral)}.heatmap-cell.filled[data-mood=happy]{background-color:var(--mood-happy)}.heatmap-cell.filled{color:var(--primary-text-color);font-weight:600}.settings-container,.generator-style-selector{background-color:var(--card-background);padding:2rem;border-radius:var(--border-radius);box-shadow:var(--card-shadow);text-align:left}.generator-style-selector{padding:1.5rem;margin-bottom:2rem}.settings-container h2,.generator-style-selector label{text-align:center;margin-bottom:1rem}.settings-form{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label,.generator-style-selector label{font-weight:600;color:var(--secondary-text-color)}.form-group input[type=text]{padding:.75rem;border:1px solid #ccc;border-radius:8px;font-family:var(--font-family);font-size:1rem;transition:border-color .2s,box-shadow .2s}.form-group input[type=text]:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px #4a90e233}.style-selector{display:flex;gap:.5rem;background-color:#e9ecef;border-radius:8px;padding:.25rem}.style-selector button{flex-grow:1;background:transparent;border:none;padding:.75rem;font-family:var(--font-family);font-size:.9rem;font-weight:600;color:var(--secondary-text-color);border-radius:6px;cursor:pointer;transition:all .3s ease}.style-selector button.active{background-color:var(--card-background);color:var(--accent-color);box-shadow:0 1px 3px #0000001a}.kindness-container{width:100%;text-align:center;display:flex;flex-direction:column;gap:1.5rem}.kindness-container h2{margin-bottom:.5rem}.kindness-container .sub-header{margin-top:0;margin-bottom:1rem;max-width:500px;margin-left:auto;margin-right:auto;line-height:1.5}.kindness-form{display:flex;flex-direction:column;gap:1rem;width:100%;align-items:center}.kindness-form textarea{width:100%;padding:.75rem;border:1px solid #ccc;border-radius:8px;font-family:var(--font-family);font-size:1rem;resize:vertical;transition:border-color .2s,box-shadow .2s}.kindness-form textarea:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px #4a90e233}.generated-kindness-card{background-color:var(--card-background);border-left:5px solid var(--accent-color);text-align:left;padding:1.5rem;border-radius:var(--border-radius);box-shadow:var(--card-shadow);display:flex;flex-direction:column;gap:1rem}.generated-kindness-card h3{font-size:1rem;font-weight:600;color:var(--secondary-text-color)}.share-actions{display:flex;gap:1rem;justify-content:flex-start;flex-wrap:wrap}.share-actions button{background-color:#e9ecef;border:none;padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-family:var(--font-family);font-weight:600;color:var(--primary-text-color);display:flex;align-items:center;gap:.5rem;transition:background-color .2s}.share-actions button:hover:not(:disabled){background-color:#dde2e7}.share-actions button:disabled{background-color:var(--success-color);color:#fff;cursor:default}.share-actions button:disabled svg{stroke:#fff}.share-actions button svg{color:var(--accent-color);stroke:var(--accent-color)}.sent-messages-history{width:100%;text-align:left;margin-top:2rem}.sent-messages-history h3{text-align:center;margin-bottom:1rem;border-top:1px solid #e0e0e0;padding-top:2rem}.sent-messages-history ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:1rem}.sent-messages-history li{background-color:var(--card-background);border-radius:var(--border-radius);padding:1rem 1.5rem;box-shadow:0 2px 5px #0000000d}.sent-messages-history .history-item-header{font-size:.9rem;color:var(--secondary-text-color);margin-bottom:.5rem}.sent-messages-history p{line-height:1.5;margin-bottom:.75rem;font-style:italic}.sent-messages-history span{font-size:.8rem;color:var(--secondary-text-color)}.data-load-error-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;padding:2rem;background-color:var(--card-background);border-radius:var(--border-radius);box-shadow:var(--card-shadow);margin-top:2rem}.data-load-error-container .error{font-size:1.1rem;text-align:center;line-height:1.5}.data-load-error-container .generate-btn{width:auto;max-width:none;padding:.75rem 2rem}.received-message-container,.login-container{justify-content:center;height:100vh;padding-bottom:0}.login-container main{width:100%;max-width:400px;margin:0 auto}.received-message-intro,.login-prompt{font-size:1.1rem;color:var(--secondary-text-color);margin-bottom:1.5rem}.received-message-container .message-card{min-height:250px}.received-message-container footer,.login-container footer{background-color:transparent;border-top:none;position:relative;margin-top:2rem}.login-button{border:1px solid #ddd;border-radius:var(--border-radius);padding:.75rem 1.5rem;font-size:1rem;font-weight:600;font-family:var(--font-family);cursor:pointer;transition:background-color .3s ease,box-shadow .2s ease;box-shadow:0 1px 3px #0000001a;display:inline-flex;align-items:center;justify-content:center;gap:.75rem;width:100%;min-height:48px}.login-button.google-login-button{background-color:#fff;color:#444}.login-button.google-login-button:hover:not(:disabled){background-color:#f8f8f8;box-shadow:0 2px 6px #0000001a}.login-button.email-login-button{background-color:var(--accent-color);color:#fff;border:none}.login-button.email-login-button:hover:not(:disabled){background-color:var(--accent-hover-color)}.login-button:disabled{background-color:#ccc;cursor:not-allowed;box-shadow:none}.login-button.google-login-button:disabled{background-color:#f5f5f5;color:#999;border-color:#e0e0e0}.login-form{display:flex;flex-direction:column;gap:1rem;width:100%;text-align:left;margin-bottom:1.5rem}.login-form .form-group label{font-weight:600;color:var(--secondary-text-color);font-size:.9rem}.login-form input{width:100%;padding:.75rem;border:1px solid #ccc;border-radius:8px;font-family:var(--font-family);font-size:1rem;transition:border-color .2s,box-shadow .2s}.login-form input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px #4a90e233}.or-divider{text-align:center;margin:1.5rem 0;width:100%;display:flex;align-items:center;color:var(--secondary-text-color)}.or-divider:before,.or-divider:after{content:"";flex:1;border-bottom:1px solid #e0e0e0}.or-divider span{padding:0 1rem;font-size:.9rem}.toggle-auth-mode{margin-top:1.5rem;color:var(--secondary-text-color)}.toggle-auth-mode button{background:none;border:none;color:var(--accent-color);font-weight:600;cursor:pointer;font-family:var(--font-family);text-decoration:underline;padding:0;font-size:1em}.toggle-auth-mode button:hover{color:var(--accent-hover-color)}.login-error{text-align:center;padding:0 1rem;font-size:.9rem;min-height:1.2rem}.spinner{border:4px solid rgba(0,0,0,.1);width:36px;height:36px;border-radius:50%;border-left-color:var(--accent-color);animation:spin 1s ease infinite}.spinner-small{border:3px solid rgba(255,255,255,.3);width:24px;height:24px;border-radius:50%;border-left-color:#fff;animation:spin 1s ease infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}footer{position:fixed;bottom:0;left:0;width:100%;padding:1rem;background-color:var(--background-color);color:var(--secondary-text-color);font-size:.9rem;text-align:center;border-top:1px solid #e0e0e0}@media (max-width: 900px){.container,.received-message-container,.login-container{max-width:98vw;padding:.5rem}.message-card{padding:1.2rem;min-height:120px}.favorites-list,.sent-messages-history ul{gap:.5rem}.heatmap-grid{max-width:95vw}}@media (max-width: 600px){header h1{font-size:1.4rem}.logout-button{position:static;margin-top:1rem;width:100%}.message-card{padding:.8rem;min-height:80px;font-size:1rem}.navbar{flex-wrap:wrap;gap:.1rem;padding:.2rem}.navbar button{padding:.3rem .1rem;font-size:.7rem;min-width:40px;min-height:36px}.navbar button span{display:inline;font-size:.7rem}.favorites-list,.sent-messages-history ul{gap:.3rem}.favorite-item,.sent-messages-history li{padding:.5rem .7rem;font-size:.95rem}.settings-container,.generator-style-selector,.mood-logger,.generated-kindness-card{padding:1rem}.kindness-form textarea,.form-group input[type=text]{font-size:.95rem;padding:.5rem}.generate-btn,.login-button{padding:.7rem 1rem;font-size:.95rem;max-width:100%}.heatmap-grid{max-width:99vw;gap:2px}}@media (max-width: 380px){.container,.received-message-container,.login-container{padding:.1rem}.navbar{gap:0;padding:.05rem}.navbar button{padding:.1rem .05rem;font-size:.6rem;min-width:32px;min-height:28px}.navbar button span{font-size:.6rem}.message-card{padding:.3rem;min-height:50px;font-size:.9rem}.generate-btn,.login-button{padding:.4rem .5rem;font-size:.85rem}}button:focus,.action-btn:focus,.generate-btn:focus,.login-button:focus,.navbar button:focus,.form-group input:focus,.style-selector button:focus,.mood-buttons button:focus,.remove-btn:focus,.copy-btn:focus,.favorite-btn:focus,.share-actions button:focus,.toggle-auth-mode button:focus,.logout-button:focus{outline:2.5px solid var(--accent-color);outline-offset:2px;box-shadow:0 0 0 3px #4a90e22e;z-index:2}.skip-link{position:absolute;left:-999px;top:0;background:#fff;color:var(--accent-color);padding:.5rem 1rem;border-radius:8px;font-weight:600;z-index:1000;transition:left .2s}.skip-link:focus{left:1rem;top:1rem;outline:2.5px solid var(--accent-color);box-shadow:0 0 0 3px #4a90e22e}.toast-container{position:fixed;top:1.5rem;left:50%;transform:translate(-50%);z-index:2000;display:flex;flex-direction:column;gap:.5rem;pointer-events:none}.toast{min-width:220px;max-width:90vw;margin:0 auto;background:#fff;color:var(--primary-text-color);border-radius:8px;box-shadow:0 4px 16px #00000021;padding:1rem 1.5rem;font-size:1.1rem;font-weight:600;opacity:.98;border-left:6px solid var(--accent-color);animation:toast-in .3s cubic-bezier(.4,1.3,.6,1) both}.toast-success{border-left-color:var(--success-color)}.toast-error{border-left-color:var(--error-color);color:var(--error-color)}.toast-info{border-left-color:var(--accent-color)}@keyframes toast-in{0%{opacity:0;transform:translateY(-30px) scale(.98)}to{opacity:.98;transform:translateY(0) scale(1)}}