:root{--font-family: "Inter", system-ui, -apple-system, sans-serif;--bg-main: #f8fafc;--bg-card: #ffffff;--bg-sidebar: #0f172a;--text-main: #0f172a;--text-muted: #64748b;--border-color: #e2e8f0;--primary-color: #2563eb;--primary-hover: #1d4ed8;--primary-light: #eff6ff;--accent-color: #0284c7;--success-color: #10b981;--success-bg: #ecfdf5;--warning-color: #f59e0b;--warning-bg: #fffbeb;--danger-color: #ef4444;--danger-bg: #fef2f2;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.08);--shadow-lg: 0 10px 25px -5px rgba(0,0,0,.1), 0 8px 10px -6px rgba(0,0,0,.05)}[data-theme=dark]{--bg-main: #090d16;--bg-card: #131b2e;--bg-sidebar: #050811;--text-main: #f1f5f9;--text-muted: #94a3b8;--border-color: #1e293b;--primary-light: #1e293b}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-main);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.app-layout{display:flex;flex-direction:column;min-height:100vh}.navbar{background:var(--bg-card);border-bottom:1px solid var(--border-color);padding:.75rem 1.5rem;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:100;box-shadow:var(--shadow-sm)}.navbar-brand{display:flex;align-items:center;gap:.75rem;font-size:1.25rem;font-weight:700;color:var(--text-main)}.brand-icon{width:40px;height:40px;background:linear-gradient(135deg,#2563eb,#0284c7);color:#fff;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px #2563eb4d}.navbar-actions{display:flex;align-items:center;gap:1rem}.nav-tabs{display:flex;gap:.5rem;background:var(--bg-main);padding:.25rem;border-radius:var(--radius-md);border:1px solid var(--border-color)}.tab-btn{display:flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border:none;background:transparent;color:var(--text-muted);font-weight:500;font-size:.875rem;border-radius:var(--radius-sm);cursor:pointer;transition:all .2s ease}.tab-btn:hover{color:var(--text-main);background:#0000000a}.tab-btn.active{background:var(--bg-card);color:var(--primary-color);font-weight:600;box-shadow:var(--shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.5rem 1.1rem;border-radius:var(--radius-md);font-size:.875rem;font-weight:600;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);border:1px solid transparent;outline:none}.btn-primary{background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;box-shadow:0 4px 12px #2563eb40}.btn-primary:hover{background:linear-gradient(135deg,#1d4ed8,#1e40af);transform:translateY(-1px);box-shadow:0 6px 16px #2563eb59}.btn-secondary{background:var(--bg-card);border-color:var(--border-color);color:var(--text-main)}.btn-secondary:hover{background:var(--primary-light);border-color:var(--primary-color);color:var(--primary-color)}.btn-success{background:linear-gradient(135deg,#10b981,#059669);color:#fff;box-shadow:0 4px 12px #10b98140}.btn-success:hover{background:linear-gradient(135deg,#059669,#047857)}.btn-sm{padding:.35rem .75rem;font-size:.8rem;border-radius:var(--radius-sm)}.main-content{flex:1;padding:1.5rem;max-width:1400px;width:100%;margin:0 auto}.card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-md);margin-bottom:1.5rem}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.25rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color)}.card-title{font-size:1.1rem;font-weight:700;display:flex;align-items:center;gap:.5rem;color:var(--text-main)}.dropzone{border:2px dashed var(--primary-color);background:var(--primary-light);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center;cursor:pointer;transition:all .2s ease}.dropzone:hover{border-color:var(--accent-color);background:#2563eb14}.dropzone-icon{width:64px;height:64px;margin:0 auto 1rem;color:var(--primary-color);background:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md)}.preview-layout{display:grid;grid-template-columns:320px 1fr;gap:1.5rem;align-items:start}.employee-sidebar{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);display:flex;flex-direction:column;max-height:calc(100vh - 140px);overflow:hidden;box-shadow:var(--shadow-sm)}.sidebar-search{padding:1rem;border-bottom:1px solid var(--border-color)}.search-input{width:100%;padding:.6rem .8rem;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-main);color:var(--text-main);font-size:.875rem;outline:none}.search-input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #2563eb26}.employee-list{overflow-y:auto;flex:1}.employee-item{padding:.85rem 1rem;border-bottom:1px solid var(--border-color);cursor:pointer;transition:background .15s ease}.employee-item:hover{background:var(--primary-light)}.employee-item.active{background:var(--primary-light);border-left:4px solid var(--primary-color)}.employee-name{font-weight:600;font-size:.9rem;color:var(--text-main)}.employee-sub{font-size:.775rem;color:var(--text-muted);display:flex;justify-content:space-between;margin-top:.2rem}.badge{display:inline-block;padding:.15rem .45rem;font-size:.7rem;font-weight:600;border-radius:999px}.badge-success{background:var(--success-bg);color:var(--success-color)}.badge-warning{background:var(--warning-bg);color:var(--warning-color)}.email-preview-container{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-md)}.preview-toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.75rem;border-bottom:1px solid var(--border-color)}.email-frame{width:100%;min-height:700px;border:1px solid var(--border-color);border-radius:var(--radius-md);background:#fff}.data-table-container{overflow-x:auto;border-radius:var(--radius-md);border:1px solid var(--border-color)}.data-table{width:100%;border-collapse:collapse;font-size:.85rem;text-align:left}.data-table th{background:var(--bg-main);padding:.75rem 1rem;font-weight:600;color:var(--text-muted);border-bottom:1px solid var(--border-color)}.data-table td{padding:.75rem 1rem;border-bottom:1px solid var(--border-color)}.data-table tr:hover{background:var(--primary-light)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0f172a99;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:90%;max-width:650px;max-height:90vh;overflow-y:auto;padding:1.75rem;box-shadow:var(--shadow-lg)}.form-group{margin-bottom:1rem}.form-label{display:block;font-size:.85rem;font-weight:600;margin-bottom:.35rem;color:var(--text-main)}.form-control{width:100%;padding:.6rem .8rem;border:1px solid var(--border-color);border-radius:var(--radius-md);background:var(--bg-main);color:var(--text-main);font-size:.875rem}.form-control:focus{border-color:var(--primary-color);outline:none}.tag-chips{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.5rem}.tag-chip{background:var(--primary-light);color:var(--primary-color);border:1px solid rgba(37,99,235,.2);padding:.2rem .5rem;font-size:.75rem;font-weight:600;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}.tag-chip:hover{background:var(--primary-color);color:#fff}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .25s ease-out forwards}