:root{--primary: #2563eb;--primary-hover: #1d4ed8;--bg: #f8fafc;--card-bg: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border: #e2e8f0;--success: #10b981;--warning: #f59e0b;--danger: #ef4444}*{box-sizing:border-box;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}body{background-color:var(--bg);color:var(--text-main);line-height:1.5}.app-container{display:flex;min-height:100vh}.sidebar{width:260px;background-color:var(--card-bg);border-right:1px solid var(--border);padding:2rem 1rem;display:flex;flex-direction:column;gap:1rem}.sidebar h2{font-size:1.25rem;padding:0 1rem;margin-bottom:1rem;color:var(--primary)}.nav-link{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;color:var(--text-main);text-decoration:none;border-radius:.375rem;font-weight:500;transition:background-color .2s}.nav-link:hover,.nav-link.active{background-color:#eff6ff;color:var(--primary)}.main-content{flex:1;padding:2rem 3rem;max-width:1200px;margin:0 auto}.page-header{margin-bottom:2rem}.page-header h1{font-size:1.875rem;font-weight:600;margin-bottom:.5rem}.page-header p{color:var(--text-muted)}.card{background-color:var(--card-bg);border:1px solid var(--border);border-radius:.5rem;padding:1.5rem;margin-bottom:1.5rem;box-shadow:0 1px 3px #0000000d}.card h3{font-size:1.125rem;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border)}.btn{background-color:var(--primary);color:#fff;border:none;padding:.5rem 1rem;border-radius:.375rem;font-weight:500;cursor:pointer;transition:background-color .2s}.btn:hover{background-color:var(--primary-hover)}.btn-outline{background-color:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover{background-color:#eff6ff}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.stat-card{padding:1.5rem;border:1px solid var(--border);border-radius:.5rem;text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-muted);font-size:.875rem;text-transform:uppercase;letter-spacing:.05em}.alert{padding:1rem;border-radius:.375rem;margin-bottom:1rem;background-color:#fffbeb;border:1px solid #fcd34d;color:#92400e}.nano-banana-box{background-color:#f0fdf4;border:1px dashed #22c55e;padding:1.5rem;border-radius:.5rem;text-align:center;margin:2rem 0}