:root{--primary: #6366f1;--primary-light: #e0e7ff;--bg: #f8fafc;--card-bg: #ffffff;--text-main: #1e293b;--text-muted: #64748b;--shadow: 0 10px 25px -5px rgba(0, 0, 0, .05), 0 8px 10px -6px rgba(0, 0, 0, .05)}body{margin:0;font-family:Inter,-apple-system,sans-serif;background-color:var(--bg);color:var(--text-main)}.app-container{max-width:600px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-header{padding:20px;display:flex;justify-content:space-between;align-items:center;background:#fffc;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:10;border-bottom:1px solid #e2e8f0}.logo{display:flex;align-items:center;gap:10px}.icon-main{color:var(--primary)}.logo h1{font-size:1.25rem;font-weight:800;margin:0;background:linear-gradient(135deg,#6366f1,#a78bfa);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.cloud-status{display:flex;align-items:center;gap:6px;font-size:.75rem;color:var(--text-muted);background:var(--primary-light);padding:4px 10px;border-radius:20px}.content{padding:20px;flex:1}.input-card{background:var(--card-bg);border-radius:20px;padding:20px;box-shadow:var(--shadow);margin-bottom:24px;border:1px solid #f1f5f9}.input-header{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:.875rem;margin-bottom:15px}textarea{width:100%;height:100px;border:none;resize:none;font-size:1.1rem;color:var(--text-main);outline:none;padding:0;margin-bottom:15px;line-height:1.6}textarea::placeholder{color:#cbd5e1}.input-footer{display:flex;justify-content:space-between;align-items:center;padding-top:15px;border-top:1px solid #f1f5f9}.mood-picker{display:flex;gap:12px}.mood-picker button{background:none;border:none;cursor:pointer;padding:4px;border-radius:50%;transition:all .2s}.mood-picker button:hover{background:#f1f5f9;transform:scale(1.1)}.mood-picker button.active{background:var(--primary-light);transform:scale(1.2)}.save-btn{background:var(--primary);color:#fff;border:none;padding:10px 20px;border-radius:12px;font-weight:600;cursor:pointer;transition:all .2s}.save-btn:hover:not(:disabled){background:#4f46e5;transform:translateY(-2px);box-shadow:0 4px 12px #6366f14d}.save-btn:disabled{opacity:.5;cursor:not-allowed}.stats-bar{margin-bottom:20px}.stat-item{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;color:var(--text-muted);background:#f1f5f9;padding:6px 12px;border-radius:8px}.diary-item{background:var(--card-bg);border-radius:16px;padding:16px;display:flex;gap:16px;margin-bottom:12px;box-shadow:0 4px 6px -1px #0000000d;transition:transform .2s;position:relative;overflow:hidden}.diary-item:hover{transform:translate(4px)}.item-mood{flex-shrink:0;display:flex;align-items:center}.item-content{flex:1}.item-date{font-size:.75rem;color:var(--text-muted);margin-bottom:4px}.item-text{margin:0;font-size:.95rem;line-height:1.5;color:var(--text-main)}.delete-btn{opacity:0;background:none;border:none;color:#ef4444;cursor:pointer;transition:opacity .2s;padding:8px}.diary-item:hover .delete-btn{opacity:1}.empty-state{text-align:center;padding:60px 20px;color:#cbd5e1}.empty-state p{margin-top:10px}@keyframes pulse{0%{opacity:1}50%{opacity:.4}to{opacity:1}}.pulse{animation:pulse 1.5s infinite ease-in-out}.loading-screen{height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;color:var(--text-muted)}.spinner{width:40px;height:40px;border:4px solid var(--primary-light);border-top:4px solid var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}