:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg-color:#f8fafc;--card-bg:#fff;--text-main:#0f172a;--text-muted:#64748b;--border-color:#e2e8f0;--success:#10b981;--error:#ef4444}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-main);-webkit-font-smoothing:antialiased;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.admin-layout{flex-direction:column;min-height:100vh;display:flex}.header{background-color:var(--card-bg);border-bottom:1px solid var(--border-color);z-index:10;justify-content:space-between;align-items:center;padding:1.5rem 2rem;display:flex;position:sticky;top:0;box-shadow:0 1px 2px #0000000d}.header-title{letter-spacing:-.025em;color:var(--text-main);font-size:1.25rem;font-weight:700}.main-content{flex:1;width:100%;max-width:1000px;margin:0 auto;padding:3rem 2rem}.card{background-color:var(--card-bg);border:1px solid var(--border-color);border-radius:12px;margin-bottom:2rem;padding:2rem;transition:transform .2s,box-shadow .2s;box-shadow:0 4px 6px -1px #0000000d,0 2px 4px -1px #00000008}.card:hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #0000001a,0 4px 6px -2px #0000000d}.card-title{letter-spacing:-.025em;margin-bottom:.5rem;font-size:1.5rem;font-weight:600}.card-subtitle{color:var(--text-muted);margin-bottom:2rem;font-size:.95rem}.stat-group{align-items:baseline;gap:.5rem;margin-bottom:2rem;display:flex}.stat-value{letter-spacing:-.05em;color:var(--primary);font-size:3rem;font-weight:800}.stat-label{color:var(--text-muted);font-size:1.1rem;font-weight:500}.btn{cursor:pointer;border:none;border-radius:8px;justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary);color:#fff;box-shadow:0 2px 4px #2563eb4d}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 6px #2563eb66}.btn-primary:disabled{opacity:.7;cursor:not-allowed}.btn-outline{border:1px solid var(--border-color);color:var(--text-main);background-color:#0000}.btn-outline:hover:not(:disabled){background-color:var(--bg-color)}.file-drop-area{border:2px dashed var(--border-color);text-align:center;cursor:pointer;background-color:var(--bg-color);border-radius:12px;margin-bottom:1.5rem;padding:3rem 2rem;transition:all .2s}.file-drop-area:hover{border-color:var(--primary);background-color:#eff6ff}.file-drop-area.drag-active{border-color:var(--primary);background-color:#dbeafe}.file-drop-icon{color:var(--primary);margin-bottom:1rem}.file-drop-text{color:var(--text-main);margin-bottom:.25rem;font-weight:500}.file-drop-subtext{color:var(--text-muted);font-size:.875rem}.alert{border-radius:8px;align-items:center;gap:.75rem;margin-bottom:1.5rem;padding:1rem;font-weight:500;display:flex}.alert-success{color:#065f46;background-color:#d1fae5;border:1px solid #10b981}.alert-error{color:#991b1b;background-color:#fee2e2;border:1px solid #ef4444}.progress-bar-container{background-color:var(--border-color);border-radius:4px;width:100%;height:8px;margin-top:1rem;overflow:hidden}.progress-bar-fill{background-color:var(--primary);height:100%;transition:width .3s}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:.4s forwards fadeIn}