/* StorageOS — Estilos principales */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue:       #185FA5;
  --blue-light: #E6F1FB;
  --blue-mid:   #B5D4F4;
  --blue-dark:  #0C447C;
  --text:       #1a1a1a;
  --text-muted: #6b7280;
  --text-hint:  #9ca3af;
  --bg:         #f5f5f3;
  --bg-card:    #ffffff;
  --bg-hover:   #f1f0ee;
  --border:     rgba(0,0,0,0.10);
  --border-md:  rgba(0,0,0,0.18);
  --radius:     8px;
  --radius-lg:  12px;
  --sidebar-w:  220px;
  --topbar-h:   56px;
  --green:      #3B6D11;
  --green-bg:   #EAF3DE;
  --amber:      #854F0B;
  --amber-bg:   #FAEEDA;
  --red:        #791F1F;
  --red-bg:     #FCEBEB;
  --purple:     #3C3489;
  --purple-bg:  #EEEDFE;
}

body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.5; }

/* APP LAYOUT */
.app { display: flex; height: 100vh; overflow: hidden; }

/* SIDEBAR */
.sidebar { width: var(--sidebar-w); background: var(--bg-card); border-right: 0.5px solid var(--border); display: flex; flex-direction: column; flex-shrink: 0; transition: transform 0.25s; z-index: 100; }
.sidebar-logo { display: flex; align-items: center; gap: 10px; padding: 16px; border-bottom: 0.5px solid var(--border); }
.logo-icon { width: 36px; height: 36px; background: var(--blue); color: #fff; border-radius: var(--radius); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 700; flex-shrink: 0; }
.logo-icon.lg { width: 56px; height: 56px; font-size: 28px; margin: 0 auto 12px; }
.logo-name { font-size: 15px; font-weight: 600; color: var(--text); }
.logo-sub  { font-size: 11px; color: var(--text-muted); }

.nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.nav-section { font-size: 10px; font-weight: 600; color: var(--text-hint); letter-spacing: 0.08em; padding: 12px 16px 4px; text-transform: uppercase; }
.nav-item { display: flex; align-items: center; gap: 8px; padding: 8px 16px; cursor: pointer; font-size: 13px; color: var(--text-muted); text-decoration: none; border-left: 2px solid transparent; transition: all 0.12s; }
.nav-item:hover { background: var(--bg-hover); color: var(--text); }
.nav-item.active { color: var(--blue); border-left-color: var(--blue); background: var(--blue-light); font-weight: 500; }
.nav-icon { font-size: 15px; width: 20px; text-align: center; font-style: normal; }

.sidebar-footer { padding: 12px 16px; border-top: 0.5px solid var(--border); display: flex; align-items: center; gap: 8px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--blue-light); color: var(--blue); display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 600; flex-shrink: 0; }
.user-info { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.user-name { font-size: 12px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { font-size: 10px; color: var(--text-muted); }
.btn-logout { background: none; border: none; cursor: pointer; color: var(--text-muted); font-size: 18px; padding: 4px; border-radius: var(--radius); }
.btn-logout:hover { background: var(--bg-hover); color: var(--red); }

/* MAIN */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.topbar { height: var(--topbar-h); background: var(--bg-card); border-bottom: 0.5px solid var(--border); display: flex; align-items: center; justify-content: space-between; padding: 0 20px; flex-shrink: 0; }
.topbar-left { display: flex; align-items: center; gap: 12px; }
.topbar-right { display: flex; align-items: center; gap: 8px; }
.page-title { font-size: 16px; font-weight: 500; color: var(--text); }
.btn-menu { display: none; background: none; border: none; cursor: pointer; font-size: 20px; color: var(--text-muted); padding: 4px; }

.content { flex: 1; overflow-y: auto; padding: 20px; }

/* BOTONES */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; font-size: 13px; border-radius: var(--radius); cursor: pointer; border: 0.5px solid var(--border-md); background: var(--bg-card); color: var(--text); font-family: inherit; transition: all 0.12s; }
.btn:hover { background: var(--bg-hover); }
.btn-primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn-primary:hover { background: var(--blue-dark); }
.btn-danger { background: var(--red-bg); color: var(--red); border-color: var(--red); }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 5px 8px; background: none; border: none; color: var(--text-muted); cursor: pointer; border-radius: var(--radius); font-size: 16px; }
.btn-icon:hover { background: var(--bg-hover); color: var(--text); }

/* MÉTRICAS */
.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 20px; }
.metric { background: var(--bg-hover); border-radius: var(--radius); padding: 14px; }
.metric-label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 6px; }
.metric-value { font-size: 24px; font-weight: 500; color: var(--text); }
.metric-sub { font-size: 11px; color: var(--text-muted); margin-top: 3px; }
.metric-sub.ok   { color: var(--green); }
.metric-sub.warn { color: var(--amber); }
.metric-sub.bad  { color: var(--red); }

/* CARDS */
.card { background: var(--bg-card); border: 0.5px solid var(--border); border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 16px; }
.card-header { padding: 12px 16px; border-bottom: 0.5px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.card-title { font-size: 13px; font-weight: 500; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }

/* TABLAS */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { padding: 9px 14px; text-align: left; font-size: 11px; font-weight: 600; color: var(--text-muted); background: var(--bg-hover); border-bottom: 0.5px solid var(--border); text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }
td { padding: 11px 14px; border-bottom: 0.5px solid var(--border); color: var(--text); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: #fafaf8; }

/* BADGES */
.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 11px; font-weight: 500; white-space: nowrap; }
.badge-active   { background: var(--green-bg);  color: var(--green); }
.badge-expiring { background: var(--amber-bg);  color: var(--amber); }
.badge-expired  { background: var(--red-bg);    color: var(--red); }
.badge-draft    { background: var(--bg-hover);  color: var(--text-muted); }
.badge-blue     { background: var(--blue-light); color: var(--blue-dark); }
.badge-purple   { background: var(--purple-bg); color: var(--purple); }

/* FORMULARIOS */
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 12px; font-weight: 500; color: var(--text-muted); margin-bottom: 5px; text-transform: uppercase; letter-spacing: 0.04em; }
.form-group input,
.form-group select,
.form-group textarea { width: 100%; padding: 8px 12px; font-size: 13px; border: 0.5px solid var(--border-md); border-radius: var(--radius); background: var(--bg-card); color: var(--text); font-family: inherit; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(24,95,165,0.1); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* BARRA DE BÚSQUEDA */
.search-bar { display: flex; gap: 8px; margin-bottom: 14px; }
.search-bar input { flex: 1; padding: 8px 12px; font-size: 13px; border: 0.5px solid var(--border-md); border-radius: var(--radius); background: var(--bg-card); color: var(--text); }

/* FILTROS */
.filter-tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-tab { padding: 4px 12px; font-size: 12px; border-radius: 20px; border: 0.5px solid var(--border-md); background: var(--bg-card); color: var(--text-muted); cursor: pointer; transition: all 0.12s; }
.filter-tab:hover { background: var(--bg-hover); }
.filter-tab.active { background: var(--blue); color: #fff; border-color: var(--blue); }

/* BARRA DE OCUPACIÓN */
.occ-bar-bg { background: var(--bg-hover); border-radius: 4px; height: 6px; }
.occ-bar { height: 6px; border-radius: 4px; transition: width 0.4s; }

/* MODAL */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 200; display: flex; align-items: center; justify-content: center; padding: 20px; }
.modal { background: var(--bg-card); border-radius: var(--radius-lg); width: 100%; max-width: 560px; max-height: 90vh; overflow-y: auto; }
.modal-header { padding: 16px 20px; border-bottom: 0.5px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-title { font-size: 15px; font-weight: 500; }
.modal-body { padding: 20px; }
.modal-footer { padding: 14px 20px; border-top: 0.5px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

/* TOAST */
.toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 300; display: flex; flex-direction: column; gap: 8px; }
.toast { padding: 10px 16px; border-radius: var(--radius); font-size: 13px; font-weight: 500; animation: slideIn 0.2s ease; max-width: 320px; }
.toast-success { background: var(--green-bg); color: var(--green); border: 0.5px solid var(--green); }
.toast-error   { background: var(--red-bg);   color: var(--red);   border: 0.5px solid var(--red); }
.toast-info    { background: var(--blue-light); color: var(--blue-dark); border: 0.5px solid var(--blue-mid); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* LOGIN */
.login-overlay { position: fixed; inset: 0; background: var(--bg); z-index: 500; display: flex; align-items: center; justify-content: center; }
.login-overlay.hidden { display: none; }
.login-card { background: var(--bg-card); border: 0.5px solid var(--border); border-radius: var(--radius-lg); padding: 32px; width: 100%; max-width: 380px; }
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo h2 { font-size: 20px; font-weight: 600; margin-bottom: 4px; }
.login-logo p { font-size: 13px; color: var(--text-muted); }
.btn-login { width: 100%; padding: 10px; background: var(--blue); color: #fff; border: none; border-radius: var(--radius); font-size: 14px; font-weight: 500; cursor: pointer; margin-top: 8px; }
.btn-login:hover { background: var(--blue-dark); }
.login-error { font-size: 12px; color: var(--red); margin-bottom: 8px; min-height: 16px; }

/* LOADING */
.loading-screen { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 300px; gap: 12px; color: var(--text-muted); }
.spinner { width: 32px; height: 32px; border: 2px solid var(--border); border-top-color: var(--blue); border-radius: 50%; animation: spin 0.7s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.empty-state { text-align: center; padding: 48px 20px; color: var(--text-muted); }
.empty-state p { margin-top: 8px; font-size: 13px; }

/* GRID ALMACENES */
.almacen-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 12px; }
.almacen-card { background: var(--bg-card); border: 0.5px solid var(--border); border-radius: var(--radius-lg); padding: 14px; cursor: pointer; transition: border-color 0.12s; }
.almacen-card:hover { border-color: var(--blue-mid); }
.almacen-card-name { font-size: 13px; font-weight: 500; margin-bottom: 2px; }
.almacen-card-code { font-size: 11px; color: var(--text-muted); margin-bottom: 10px; }
.almacen-card-stats { display: flex; justify-content: space-between; font-size: 11px; color: var(--text-muted); margin-top: 6px; }

/* RESPONSIVE */
@media (max-width: 768px) {
  .sidebar { position: fixed; top: 0; left: 0; height: 100vh; transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .btn-menu { display: block; }
  .form-row, .form-row-3 { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
}