@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;600;700&family=Inter:wght@300;400;500;600&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --primary: #4D42F8;
  --primary-dark: #3730d4;
  --primary-light: #ece9ff;
  --bg: #f7f8fc;
  --white: #ffffff;
  --text: #1a1d2e;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
}

body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
h1,h2,h3,h4 { font-family: 'Roboto', sans-serif; }

/* LOGIN */
.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #4D42F8 0%, #7c6ff7 100%);
}
.login-card {
  background: var(--white);
  border-radius: 16px;
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 20px 60px rgba(77,66,248,0.25);
}
.login-logo { text-align: center; margin-bottom: 32px; }
.login-logo h1 { font-size: 22px; color: var(--primary); font-weight: 700; }
.login-logo p { color: var(--text-muted); font-size: 13px; margin-top: 4px; }

/* LAYOUT APP */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 240px;
  background: var(--white);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  box-shadow: var(--shadow);
}
.sidebar-header {
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
}
.sidebar-header h2 { font-size: 16px; color: var(--primary); font-weight: 700; }
.sidebar-header p { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

.nav-menu { flex: 1; padding: 12px 0; overflow-y: auto; }
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 20px;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 13.5px;
  font-weight: 500;
  transition: all 0.15s;
  border-left: 3px solid transparent;
}
.nav-item:hover { background: var(--primary-light); color: var(--primary); }
.nav-item.active { background: var(--primary-light); color: var(--primary); border-left-color: var(--primary); }
.nav-item .icon { font-size: 16px; width: 20px; text-align: center; }
.nav-section { padding: 12px 20px 4px; font-size: 10px; text-transform: uppercase; color: var(--text-muted); letter-spacing: 0.05em; }

.sidebar-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
}
.user-info { display: flex; align-items: center; gap: 10px; }
.user-avatar {
  width: 34px; height: 34px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 13px;
}
.user-name { font-size: 12px; font-weight: 600; color: var(--text); }
.user-role { font-size: 11px; color: var(--text-muted); }
.btn-logout {
  margin-top: 10px;
  width: 100%;
  padding: 7px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-logout:hover { border-color: var(--danger); color: var(--danger); }

.main-content {
  margin-left: 240px;
  flex: 1;
  padding: 28px;
  min-height: 100vh;
}

/* VIEWS */
.view { display: none; }
.view.active { display: block; }

/* PAGE HEADER */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.page-header h1 { font-size: 22px; font-weight: 700; color: var(--text); }
.page-header p { font-size: 13px; color: var(--text-muted); margin-top: 2px; }

/* STATS CARDS */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--white);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 16px;
}
.stat-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.stat-icon.blue { background: #ece9ff; }
.stat-icon.green { background: #dcfce7; }
.stat-icon.red { background: #fee2e2; }
.stat-icon.orange { background: #fef3c7; }
.stat-value { font-size: 26px; font-weight: 700; font-family: 'Roboto', sans-serif; color: var(--text); }
.stat-label { font-size: 12px; color: var(--text-muted); }

/* CARDS */
.card {
  background: var(--white);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-header h3 { font-size: 15px; font-weight: 600; }
.card-body { padding: 20px; }

/* TABLE */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
thead th {
  background: var(--bg);
  padding: 10px 14px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
  color: var(--text);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: #fafafa; }

/* BADGES */
.badge {
  display: inline-flex; align-items: center;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
}
.badge-success { background: #dcfce7; color: #16a34a; }
.badge-danger  { background: #fee2e2; color: #dc2626; }
.badge-warning { background: #fef3c7; color: #d97706; }
.badge-primary { background: #ece9ff; color: #4D42F8; }
.badge-gray    { background: #f3f4f6; color: #6b7280; }

/* FORMS */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13.5px;
  font-family: 'Inter', sans-serif;
  color: var(--text);
  background: var(--white);
  transition: border-color 0.15s;
  outline: none;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(77,66,248,0.1); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 500;
  font-family: 'Inter', sans-serif;
  cursor: pointer;
  border: none;
  transition: all 0.15s;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: none; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* MODAL */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--white);
  border-radius: 16px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}
.modal-header {
  padding: 20px 24px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--text-muted); line-height: 1; }
.modal-close:hover { color: var(--text); }
.modal-body { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; gap: 8px; justify-content: flex-end; }

/* ALERTS */
.alert {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 13px;
  margin-bottom: 16px;
}
.alert-danger { background: #fee2e2; color: #dc2626; }
.alert-success { background: #dcfce7; color: #16a34a; }

/* STOCK indicator */
.stock-low { color: var(--danger); font-weight: 600; }
.stock-ok { color: var(--success); font-weight: 600; }
.stock-warn { color: var(--warning); font-weight: 600; }

/* EMPTY STATE */
.empty-state {
  text-align: center;
  padding: 48px 20px;
  color: var(--text-muted);
}
.empty-state .icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }

/* TIPO movimiento */
.tipo-entrada { background: #dcfce7; color: #16a34a; }
.tipo-salida  { background: #fee2e2; color: #dc2626; }
.tipo-ajuste  { background: #fef3c7; color: #d97706; }

/* Responsive */
@media (max-width: 768px) {
  .sidebar { width: 200px; }
  .main-content { margin-left: 200px; padding: 16px; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}