:root{--bg-main: #0f1225;--bg-sidebar: #191e36;--bg-card: #1f253d;--bg-input: #15192b;--border-color: #2c3251;--text-primary: #ffffff;--text-secondary: #8c9bba;--accent-color: #5c6bc0;--accent-hover: #4b57a0;--error-color: #e74c3c}body{margin:0;padding:0;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-main);color:var(--text-primary);height:100vh;overflow:hidden}.app-container{display:flex;height:100vh;width:100vw}.sidebar{width:300px;background-color:var(--bg-sidebar);border-right:1px solid var(--border-color);padding:24px;display:flex;flex-direction:column;overflow-y:auto}.sidebar-header{margin-bottom:30px}.sidebar-title{color:#a8b2eb;font-size:1.25rem;font-weight:700;display:flex;align-items:center;gap:10px;margin:0 0 5px}.sidebar-subtitle{color:var(--text-secondary);font-size:.85rem;margin:0}.sidebar-group{margin-bottom:24px}.sidebar-label{display:block;color:var(--text-secondary);font-size:.75rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;margin-bottom:8px}.sidebar-input,.sidebar-select{width:100%;background-color:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);border-radius:6px;padding:10px;font-size:.9rem;outline:none;box-sizing:border-box}.sidebar-input:focus,.sidebar-select:focus{border-color:var(--accent-color)}.sidebar-hint{color:var(--text-secondary);font-size:.8rem;font-style:italic;margin-top:8px;line-height:1.4}.main-content{flex:1;padding:40px 60px;overflow-y:auto}.page-header{margin-bottom:40px}.page-title{font-size:2rem;font-weight:700;margin:0 0 10px}.page-subtitle{color:var(--text-secondary);font-size:1rem;margin:0}.tabs{display:flex;gap:20px;margin-bottom:30px}.tab-btn{background:none;border:none;color:var(--text-secondary);font-size:1rem;font-weight:600;padding:10px 15px;cursor:pointer;display:flex;align-items:center;gap:8px;border-radius:6px;transition:all .2s}.tab-btn:hover{background-color:#ffffff0d;color:var(--text-primary)}.tab-btn.active{background-color:#5c6bc033;color:#a8b2eb}.card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;padding:30px;margin-bottom:30px}.card-title{color:var(--text-secondary);font-size:.85rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase;margin:0 0 20px}.input-group{margin-bottom:20px}.input-label{display:flex;align-items:center;gap:8px;color:var(--text-secondary);font-size:.9rem;margin-bottom:10px}.custom-input{width:100%;background-color:var(--bg-main);border:1px solid var(--border-color);color:var(--text-primary);border-radius:8px;padding:14px;font-size:1rem;outline:none;box-sizing:border-box}.custom-input:focus{border-color:var(--accent-color)}.custom-textarea{width:100%;background-color:var(--bg-main);border:1px dashed var(--border-color);color:var(--text-primary);border-radius:8px;padding:20px;font-size:.95rem;min-height:120px;outline:none;resize:vertical;text-align:center;transition:border-color .2s;box-sizing:border-box}.custom-textarea:focus{border-color:var(--accent-color);border-style:solid}.custom-textarea::placeholder{color:var(--text-secondary);text-align:center;line-height:1.5}.primary-btn{width:100%;background-color:var(--accent-color);color:#fff;border:none;border-radius:8px;padding:16px;font-size:1.1rem;font-weight:600;cursor:pointer;transition:background-color .2s}.primary-btn:hover{background-color:var(--accent-hover)}.primary-btn:disabled{background-color:#3b4372;cursor:not-allowed;opacity:.7}.rendered-plan-container{background-color:#fff;border-radius:8px;overflow:hidden;color:#333}.plan-top-bar{display:flex;justify-content:space-between;align-items:center;padding:15px 30px;border-bottom:1px solid #eaeaea;background-color:#fafafa}.plan-top-title{color:#777;font-size:.85rem;font-weight:500;max-width:60%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.plan-top-actions{display:flex;gap:15px}.text-action-btn{background:none;border:none;color:#777;font-size:.85rem;cursor:pointer;padding:0}.text-action-btn:hover{color:#333}.rendered-plan-paper{padding:40px;background-color:#fff}.plan-section{margin-bottom:35px}.plan-section h2{font-size:1.2rem;text-transform:uppercase;letter-spacing:.5px;color:#000;margin:0 0 15px;font-weight:800}.plan-section ul{list-style-type:disc;padding-left:20px;margin:0;color:#777}.plan-section li{margin-bottom:8px;line-height:1.6;font-size:.95rem}.plan-section p{line-height:1.7;margin:0;color:#555;font-size:.95rem;white-space:pre-wrap}.history-item{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:20px;margin-bottom:15px;display:flex;justify-content:space-between;align-items:center}.history-details h4{margin:0 0 8px;font-size:1.1rem}.history-meta{color:var(--text-secondary);font-size:.85rem;display:flex;flex-direction:column;gap:4px}.s3-link{color:#8c9bba;text-decoration:underline}.s3-link:hover{color:var(--accent-color)}