:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e5e7eb;
  --primary:#4f46e5;
  --primary-hover:#4338ca;
  --success:#10b981;
  --warning:#f59e0b;
  --danger:#ef4444;
  --info:#3b82f6;
  --radius:12px;
  --shadow:0 1px 3px rgba(0,0,0,.06), 0 1px 2px rgba(0,0,0,.04);
  --shadow-lg:0 10px 25px rgba(0,0,0,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.5;
  min-height:100vh;
}
a{color:var(--primary);text-decoration:none}

/* Layout */
.app{display:flex;min-height:100vh}
.sidebar{
  width:240px;background:var(--surface);border-right:1px solid var(--border);
  padding:24px 16px;position:sticky;top:0;height:100vh;
}
.sidebar h1{font-size:18px;margin-bottom:24px;color:var(--primary)}
.sidebar nav a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:8px;color:var(--text);
  margin-bottom:4px;font-size:14px;font-weight:500;
}
.sidebar nav a:hover,.sidebar nav a.active{background:var(--bg);color:var(--primary)}
.main{flex:1;padding:32px;max-width:100%}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.topbar h2{font-size:22px;font-weight:600}

/* Cards */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-bottom:24px}
.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
.stat .label{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}
.stat .value{font-size:28px;font-weight:700;margin-top:6px}
.stat .icon{float:right;font-size:24px;opacity:.8}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 16px;border-radius:8px;border:none;cursor:pointer;
  font-size:14px;font-weight:500;transition:.15s;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--bg)}
.btn-danger{background:var(--danger);color:#fff}
.btn-sm{padding:6px 10px;font-size:12px}

/* Forms */
.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
label{font-size:13px;font-weight:500;color:var(--text)}
input,select,textarea{
  padding:10px 12px;border:1px solid var(--border);border-radius:8px;
  font-size:14px;font-family:inherit;background:var(--surface);color:var(--text);
  transition:.15s;
}
input:focus,select:focus,textarea:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(79,70,229,.15);
}
textarea{resize:vertical;min-height:80px}

/* Table */
.table-wrap{overflow-x:auto;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);box-shadow:var(--shadow)}
table{width:100%;border-collapse:collapse;min-width:700px}
th,td{padding:12px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--border)}
th{background:#fafbfd;font-weight:600;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.5px}
tr:last-child td{border-bottom:none}
tr:hover td{background:#fafbfd}

/* Badges */
.badge{display:inline-block;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500}
.badge-nuevo{background:#d1fae5;color:#065f46}
.badge-bueno{background:#dbeafe;color:#1e40af}
.badge-regular{background:#fef3c7;color:#92400e}
.badge-dañado{background:#fee2e2;color:#991b1b}
.badge-perdido{background:#e5e7eb;color:#374151}
.badge-cat{background:#ede9fe;color:#5b21b6}

/* Filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px}
.filters input,.filters select{flex:1;min-width:150px}

/* Modal */
.modal{
  position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;
  align-items:center;justify-content:center;z-index:100;padding:16px;
}
.modal.show{display:flex}
.modal-content{background:var(--surface);border-radius:var(--radius);padding:24px;max-width:420px;width:100%;box-shadow:var(--shadow-lg)}
.modal-content h3{margin-bottom:12px}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}

/* Toast */
.toast{
  position:fixed;top:20px;right:20px;background:var(--surface);
  border-left:4px solid var(--success);padding:14px 18px;border-radius:8px;
  box-shadow:var(--shadow-lg);z-index:200;animation:slide .3s;
  max-width:320px;
}
.toast.error{border-left-color:var(--danger)}
@keyframes slide{from{transform:translateX(100%);opacity:0}to{transform:translateX(0);opacity:1}}

/* Empty */
.empty{text-align:center;padding:40px;color:var(--muted)}
.empty .emoji{font-size:48px;margin-bottom:10px}

/* Mobile */
.menu-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer}
@media(max-width:768px){
  .sidebar{
    position:fixed;left:-260px;top:0;z-index:50;transition:.25s;
    box-shadow:var(--shadow-lg);
  }
  .sidebar.open{left:0}
  .menu-toggle{display:block}
  .main{padding:16px}
  .form-grid{grid-template-columns:1fr}
  .topbar h2{font-size:18px}
  .stat .value{font-size:22px}
}

/* Categorías grid */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.cat-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:16px;display:flex;align-items:center;gap:12px;
}
.cat-item .emoji{font-size:28px}
.cat-item .info{flex:1}
.cat-item .info strong{display:block;font-size:14px}
.cat-item .info small{color:var(--muted);font-size:12px}