:root{--bg: #0f1419;--bg-card: #1a2332;--bg-hover: #243044;--border: #2d3a4f;--text: #e8edf5;--text-muted: #8b9cb3;--primary: #3b82f6;--primary-hover: #2563eb;--accent: #10b981;--accent-soft: rgba(16, 185, 129, .15);--danger: #ef4444;--warning: #f59e0b;--radius: 10px;--shadow: 0 4px 24px rgba(0, 0, 0, .35);--sidebar-width: 260px;--font: "DM Sans", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.5;min-height:100vh}a{color:var(--primary);text-decoration:none}button,input,select,textarea{font-family:inherit;font-size:.9375rem}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--bg-card);border-right:1px solid var(--border);display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:100}.sidebar-brand{padding:1.5rem;border-bottom:1px solid var(--border)}.sidebar-brand h1{font-size:1.25rem;font-weight:700;background:linear-gradient(135deg,#3b82f6,#10b981);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.sidebar-brand p{font-size:.75rem;color:var(--text-muted);margin-top:.25rem}.sidebar-nav{flex:1;padding:1rem .75rem;overflow-y:auto}.nav-link{display:flex;align-items:center;gap:.75rem;padding:.65rem 1rem;border-radius:var(--radius);color:var(--text-muted);transition:all .15s;margin-bottom:.25rem;font-weight:500}.nav-link:hover{background:var(--bg-hover);color:var(--text)}.nav-link.active{background:#3b82f626;color:var(--primary)}.main-content{flex:1;margin-left:var(--sidebar-width);padding:2rem;max-width:1400px}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.page-header h2{font-size:1.75rem;font-weight:700}.page-header p{color:var(--text-muted);font-size:.9375rem;margin-top:.25rem}.card{background:var(--bg-card);border:1px solid 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var(--border)}.btn-secondary:hover{background:var(--border)}.btn-danger{background:#ef444426;color:var(--danger);border:1px solid rgba(239,68,68,.3)}.btn-danger:hover{background:#ef444440}.btn-sm{padding:.4rem .85rem;font-size:.8125rem}.form-group{margin-bottom:1rem}.form-group label{display:block;font-size:.8125rem;font-weight:600;color:var(--text-muted);margin-bottom:.4rem}.form-group input,.form-group select,.form-group textarea{width:100%;padding:.65rem .85rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text)}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f633}.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:.85rem 1rem;border-bottom:1px solid 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rgba(239,68,68,.3);color:var(--danger);padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.875rem}.success-msg{background:var(--accent-soft);border:1px solid rgba(16,185,129,.3);color:var(--accent);padding:.75rem 1rem;border-radius:var(--radius);margin-bottom:1rem;font-size:.875rem}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}.modal{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:1.5rem;width:100%;max-width:560px;max-height:90vh;overflow-y:auto}.modal h3{margin-bottom:1.25rem;font-size:1.25rem}.modal-actions{display:flex;gap:.75rem;justify-content:flex-end;margin-top:1.5rem}.filters{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1.5rem}.filters input,.filters select{padding:.5rem .85rem;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--text)}.empty-state{text-align:center;padding:3rem;color:var(--text-muted)}.user-menu{padding:1rem 1.5rem;border-top:1px solid var(--border)}.user-info{font-size:.8125rem;color:var(--text-muted);margin-bottom:.75rem}.user-info strong{display:block;color:var(--text);font-size:.9375rem}.notification-dot{width:8px;height:8px;background:var(--danger);border-radius:50%;display:inline-block}@media(max-width:768px){.sidebar{transform:translate(-100%)}.main-content{margin-left:0;padding:1rem}}